CN101448989A - Nonwoven fabric - Google Patents

Abstract

The present invention provides a nonwoven fabric with unevenness and openings, regulated so that without extremely increasing of fiber density at protrudent portions, depressed portions, etc., only part of the periphery of each open area is densified. One side edge portion (14,16) of each open area (3a,3b) is formed by shifting of fiber web (100) toward the low position of wire (302) with a gradient extending in the direction of width (WD). Nearly none of fiber web (100) is shifted to the side edge portion opposite to the one side edge portion (14,16) of open area (3a,3b), namely, other side edge portion (15,17).

Description

Bondedfibre fabric

Technical field

The present invention relates to bondedfibre fabric and bondedfibre fabric manufacture method.

Background technology

In the past, bondedfibre fabric is used for extensive fields such as medical supplies such as cleaning implements such as amenitiess such as paper nappy or sanitary napkin, wiper, mouth mask.Like this, bondedfibre fabric uses in various different fields, but in fact, under the situation of the goods that are used for every field, is necessary to make with the character of the purposes that is suitable for various goods or the mode of structure.

Bondedfibre fabric for example, forms fibrage (fiber web) by utilizing dry process or damp process etc., utilizes chemical adhesion method or heat viscosity method etc. that the fiber in the fibrage is bonded to each other and makes.In being used in the technology that forms fibrolaminar fiber combination, also existing and comprise that the method etc. that a plurality of pins are thrust this fibrolaminar method or jet water course repeatedly applies the method for operation of the power of physics to fibrage from the outside.

But these methods just are interweaved fiber eventually, do not adjust orientation or the configuration or the fibrolaminar shape etc. of the fiber in the fibrage.That is the only bondedfibre fabric of sheet that utilizes these methods to make.

In addition, also proposed to be provided with the scheme of the bondedfibre fabric of opening.For example, open in the flat 6-330443 communique the spy, disclosed by bondedfibre fabric being clipped in the projection that is equipped with laterally outstanding pin etc. pressing mold with accept the accepting between the side bearing body of this projection, make jut connect bondedfibre fabric, thus with the method for three-dimensional ground of bondedfibre fabric opening etc.

Summary of the invention

But this bondedfibre fabric bites into jut and accepts between the supporting mass of side by the fiber assembly that will constitute bondedfibre fabric, forms concavo-convex or opening.Therefore, the bondedfibre fabric of prior art for example, exists and in the fiber compression at the whole place of the periphery of wall part that will be positioned at protuberance or opening fibre density is improved and then during the materialization of heating on-woven, problem that can filming.

The fibre density height in the wall part of protuberance or the full week of opening, the bondedfibre fabric of filming, even apply external pressure, opening also is difficult to by conquassation.One of its reason, the section that can list the bondedfibre fabric of holding up at the position of being scratched by pin etc. becomes and is difficult to fall down.Under the situation of surface patch that such bondedfibre fabric is used for absorbent commodity etc., the tendency that has liquid to be difficult to see through downwards.Like this, cause under the situation of a large amount of liquid at protuberance or opening periphery, liquid can be trapped in this bondedfibre fabric, produces the wearer's skin of making dirty etc., gives the possibility of uncomfortable feeling.

The purpose of this invention is to provide a kind of bondedfibre fabric, in the bondedfibre fabric that is formed with concavo-convex or opening, adjust, make within reason the increasing of fibre density that protuberance or recess etc. are located, only with a part of regional densification in the periphery of opening.

Discoveries such as the inventor, by from upper face side to the fiber web gas jet of the netted supporting member that is prescribed from following side bearing, this fibroreticulate fiber of formation is moved, can be only with a part of densification of the periphery of opening or opening, finished the present invention.

According to first kind of form of implementation of the present invention, bondedfibre fabric comprises: along a plurality of peristomes of first direction formation; From observing with the second direction of aforementioned first direction quadrature, a side edge part that provides as a near zone the lateral margin of aforementioned peristome; As another side edge part that provides with respect near the another one zone of the aforementioned side edge part lateral margin of the aforementioned peristome of aforementioned peristome, compare the fibre density height of an aforementioned side edge part with aforementioned another one side edge part.

According to second kind of form of implementation of the present invention, in first kind of described bondedfibre fabric of form of implementation, an aforementioned side edge part is than the fiber weight per unit area height of aforementioned another one side edge part.

According to the third form of implementation of the present invention, in first kind of form of implementation or second kind of described bondedfibre fabric of form of implementation, include: adjacent first peristome and second peristome in the arrangement of aforementioned a plurality of peristomes, by first connecting portion that the fiber between aforementioned first peristome and second peristome constitutes, the fibre density of aforementioned first connecting portion is than the fibre density height of aforementioned another side edge part on aforementioned first peristome.

According to the 4th kind of form of implementation of the present invention, in the described bondedfibre fabric of the third form of implementation, aforementioned side edge part in aforementioned peristome is higher than along the containing ratio of the fiber of aforementioned second direction orientation along the containing ratio of the fiber of aforementioned first direction orientation.

According to the 5th kind of form of implementation of the present invention, in the third form of implementation or the 4th kind of described bondedfibre fabric of form of implementation, at aforementioned first connecting portion, be higher than along the containing ratio of the fiber of aforementioned first direction orientation along the containing ratio of the fiber of aforementioned second direction orientation.

According to the 6th kind of form of implementation of the present invention, in any one described bondedfibre fabric in five kinds of forms of implementation of the third form of implementation to the, aforementioned first connecting portion is than the fiber weight per unit area height of aforementioned another side edge part at the aforementioned first peristome place.

According to the 7th kind of form of implementation of the present invention, in six kinds of forms of implementation of the third form of implementation to the in any one described bondedfibre fabric, comprise: in the arrangement of aforementioned a plurality of peristomes and the 3rd peristome of aforementioned second peristome opposition side and the aforementioned first peristome adjacency and by fibroplastic second connecting portion between aforementioned first peristome and the 3rd peristome, aforementioned second connecting portion is than the fibre density height of aforementioned another side edge part at the aforementioned first peristome place.

According to the 8th kind of form of implementation of the present invention, in the 7th kind of described bondedfibre fabric of form of implementation, an aforementioned side edge part at the aforementioned second peristome place and an aforementioned side edge part at the aforementioned first peristome place are positioned at opposition side mutually on aforementioned second direction, an aforementioned side edge part at aforementioned the 3rd peristome place and an aforementioned side edge part at the aforementioned first peristome place are positioned at opposition side mutually on aforementioned second direction, as an aforementioned side edge part at the aforementioned second peristome place in the zone higher than aforementioned another side edge part fibre density, aforementioned first connecting portion, an aforementioned side edge part at the aforementioned first peristome place, aforementioned second connecting portion, continuous agley with an aforementioned side edge part at aforementioned the 3rd peristome place.

According to the 9th kind of form of implementation of the present invention, in the 7th kind of form of implementation or the 8th kind of described bondedfibre fabric of form of implementation, the fibre density of aforementioned first connecting portion is at 0.05g/cm³More than, for the fibre density of aforementioned another side edge part at least one the peristome place in aforementioned first peristome, aforementioned second peristome, more than 1.1 times, the fibre density of aforementioned second connecting portion is 0.05g/cm³More than, for the fibre density of aforementioned another side edge part at least one the peristome place in aforementioned first peristome, aforementioned second peristome, more than 1.1 times.

According to the of the present invention ten kind of form of implementation, in any one described bondedfibre fabric in nine kinds of forms of implementation of the 7th kind of form of implementation to the, aforementioned side edge part at aforementioned the 3rd peristome place, along the containing ratio of the fiber of aforementioned first direction orientation than containing ratio height along the fiber of aforementioned second direction orientation.

According to the 11 kind of form of implementation of the present invention, in any one described bondedfibre fabric in ten kinds of forms of implementation of the 7th kind of form of implementation to the, at aforementioned second connecting portion, along the containing ratio of the fiber of aforementioned second direction orientation than containing ratio height along the fiber of aforementioned first direction orientation.

According to the 12 kind of form of implementation of the present invention, in any one described bondedfibre fabric in 11 kinds of forms of implementation of the 7th kind of form of implementation to the, aforementioned second connecting portion is than the fiber weight per unit area height of aforementioned another side edge part of aforementioned first peristome.

According to the 13 kind of form of implementation of the present invention, in any one described bondedfibre fabric in 12 kinds of forms of implementation of the 7th kind of form of implementation to the, the fiber weight per unit area of an aforementioned side edge part at the fiber weight per unit area of an aforementioned side edge part at the aforementioned first peristome place, the aforementioned second peristome place, and the fiber weight per unit area of the aforementioned side edge part at aforementioned the 3rd peristome place be 15～250g/m², with respect to the fiber weight per unit area of aforementioned another side edge part at the fiber weight per unit area of aforementioned another side edge part at the fiber weight per unit area of aforementioned another side edge part at the aforementioned first peristome place, the aforementioned second peristome place and aforementioned the 3rd peristome place respectively more than 1.1 times.

According to the 14 kind of form of implementation of the present invention, in any one described bondedfibre fabric in 13 kinds of forms of implementation of first kind of form of implementation to the, comprise: a plurality of slot parts that the one side side in aforementioned bondedfibre fabric is formed extended at both sides along aforementioned first direction, aforementioned one side side respectively with a plurality of convex shaped parts that are formed extended at both sides along aforementioned first direction of aforementioned a plurality of slot part adjacency, aforementioned a plurality of peristomes are respectively along each formation of aforementioned a plurality of slot parts.

According to the 15 kind of form of implementation of the present invention, in any one the described bondedfibre fabric in 14 kinds of forms of implementation of first kind of form of implementation to the, each of aforementioned a plurality of peristomes is circular or substantially elliptical.

According to the 16 kind of form of implementation of the present invention, in the bondedfibre fabric that includes the variable density zone that the density that makes fiber changes continuously or intermittently, aforementioned variable density zone comprises a plurality of high-density regions, and described a plurality of high-density regions extend along the first direction of the regulation identical with streamline direction in the machinery when aforementioned bondedfibre fabric is made.

According to the 17 kind of form of implementation of the present invention, in the 16 kind of described bondedfibre fabric of form of implementation, aforementioned high-density region comprises the high-density region of a plurality of コ fonts that the fibre density of a side is low when observing perpendicular to the second party of aforementioned first direction.

In addition, so-called " コ font " also comprises " font of falling コ ".That is, so-called " コ font high-density region " also comprises " font of falling コ high-density region ".

According to the 18 kind of form of implementation of the present invention, in the 16 kind of form of implementation or the 17 kind of described bondedfibre fabric of form of implementation, aforementioned high-density region comprises along aforementioned first direction and is the crooked high-density region that bending extends.

According to the 19 kind of form of implementation of the present invention, in any one described bondedfibre fabric in first kind of form of implementation or the 18 kind of form of implementation, constitute to utilize have make that fluid passes through may part supporting member be in state from the fiber of the fiber assembly of a face side bearing with free degree, by spraying the fluid that mainly constitutes, make a part of fiber of fiber assembly move the formation bondedfibre fabric by gas to aforementioned fiber assembly.

According to the present invention, a kind of bondedfibre fabric can be provided, described bondedfibre fabric is adjusted, make in the bondedfibre fabric that is formed with concavo-convex or opening, the fibre density that protuberance or recess etc. are located is within reason to be increased, and only makes a part of regional densification in the periphery of opening.

Description of drawings

Figure 1A is the plane according to the bondedfibre fabric of first kind of form of implementation of the present invention.

Figure 1B is the ground plan according to the bondedfibre fabric of first kind of form of implementation of the present invention.

Fig. 2 is the perspective cut-away schematic view according to the bondedfibre fabric of first kind of form of implementation.

Fig. 3 A is the plane according to the netted supporting member of first kind of form of implementation.

Fig. 3 B is the ground plan according to the netted supporting member of first kind of form of implementation.

Fig. 4 is fibroreticulate perspective view.

Fig. 5 is the side view of the bondedfibre fabric manufacturing installation of first kind of form of implementation of explanation.

Fig. 6 is the plane of the bondedfibre fabric manufacturing installation of key diagram 5.

Fig. 7 is the enlarged perspective of the regional Z among Fig. 5.

Fig. 8 is the ground plan of the ejection portion among Fig. 7.

Fig. 9 A is the plane according to the bondedfibre fabric of second kind of form of implementation.

Fig. 9 B is the ground plan according to the bondedfibre fabric of second kind of form of implementation.

Figure 10 is the perspective cut-away schematic view according to the bondedfibre fabric of second kind of form of implementation.

Figure 11 A is the plane according to the bondedfibre fabric of the third form of implementation.

Figure 11 B is the cutaway view according to the bondedfibre fabric of the third form of implementation.

Figure 12 A is the perspective cut-away schematic view of expression according to an example of the purposes example of bondedfibre fabric of the present invention.

Figure 12 B is the part enlarged drawing of Figure 12 A.

Figure 13 A is the perspective view of expression according to an example of the purposes example of bondedfibre fabric of the present invention.

Figure 13 B is the part enlarged drawing of Figure 13 A.

Figure 14 is the diagram of expression according to an example of the purposes example of bondedfibre fabric of the present invention.

Figure 15 A is the perspective view of expression according to an example of the purposes example of bondedfibre fabric of the present invention.

Figure 15 B is the enlarged drawing of the part of Figure 15 A.

The specific embodiment

Figure 1A, 1B are the plane and the ground plans of the bondedfibre fabric of first kind of form of implementation.Fig. 2 is the perspective cut-away schematic view according to the bondedfibre fabric of first kind of form of implementation.Fig. 3 A, Fig. 3 B are according to the plane of the netted supporting member of first kind of form of implementation and ground plan.Fig. 4 is fibroreticulate perspective view.Fig. 5 is the side view of the bondedfibre fabric manufacturing installation of first kind of form of implementation of explanation.Fig. 6 is the plane of the bondedfibre fabric manufacturing installation of key diagram 5.Fig. 7 is the enlarged perspective of the regional Z among Fig. 5.Fig. 8 is the ground plan of the ejection portion among Fig. 7.Fig. 9 A, Fig. 9 B are according to the plane of the bondedfibre fabric of second kind of form of implementation and ground plan.Figure 10 is the perspective cut-away schematic view according to the bondedfibre fabric of second kind of form of implementation.Figure 11 A, Figure 11 B are according to the plane of the bondedfibre fabric of the third form of implementation and cutaway view.Figure 12 A, Figure 12 B are the diagram of expression according to an example of the purposes example of bondedfibre fabric of the present invention.Figure 13 A, Figure 13 B are the diagram of expression according to an example of the purposes example of bondedfibre fabric of the present invention.Figure 14 is the diagram of expression according to an example of the purposes example of bondedfibre fabric of the present invention.Figure 15 A, Figure 15 B are the diagram of expression according to an example of the purposes example of bondedfibre fabric of the present invention.

1. the summary of bondedfibre fabric of the present invention

Bondedfibre fabric of the present invention is roughly realized as follows.Preparation has the netted supporting member of regulation that can make the part that fluid passes through.This netted supporting member of fiber assembly quilt from a side bearing, is formed roughly sheet.When constituting this roughly the fiber of the fiber assembly of sheet is in the state with free degree, spray the fluid that mainly constitutes from another side side direction fiber assembly by gas.Whereby, the moving of controlling fiber, along first direction, for example the length direction (LD) as longitudinal direction forms a plurality of peristomes.In each of described a plurality of peristomes, for example has the feature below.From perpendicular to the second direction of first direction, be when observing here as width (MD) direction of horizontal direction, the fibre density height of another side edge part that provides near another zone the lateral margin of peristome is provided to a side edge part that provides as a near zone the lateral margin of peristome.Constitute bondedfibre fabric with above-mentioned feature.In addition, so-called length direction (LD) is to send bondedfibre fabric or fibroreticulate direction via the manufacturing machine of bondedfibre fabric.So-called width (MD) is the direction with length direction (LD) quadrature.

2. first kind of form of implementation

Below, utilize Figure 1A～Fig. 4 that first kind of form of implementation of bondedfibre fabric of the present invention is described.

In addition, below, as Figure 1A, Figure 1B, shown in Figure 2, slotpart 1a, 1b are examples of slot part 1.Convex shapedpart 2a, 2b are examples of convex shaped part 2.Thefirst peristome 3a of regulation and to go up the secondadjacent peristome 3b (below, sometimes thefirst peristome 3a, thesecond peristome 3b are simplified toperistome 3a, 3b) at length direction (LD) be an example of a plurality of peristomes 3.

2-1. shape

As Figure 1A, Figure 1B or shown in Figure 2, thebondedfibre fabric 116 in this form of implementation is the bondedfibre fabrics that form side by side as a unit, with a plurality of units withslot part 1a, 1b.That is,bondedfibre fabric 116 has a plurality ofslot part 1a, the 1b that is formed extended at both sides along length (vertically) direction in the one side side.In addition, betweenslot part 1a and slotpart 1b, alternately form convex shapedpart 2a, 2b with about equally spacing parallel arranging.

In addition,bondedfibre fabric 116 is the bondedfibre fabrics that alternately form a plurality ofperistome 3a, 3b on as the length direction (LD) of longitudinal direction with interval about equally continuously.In addition, in this form of implementation, alternately form a plurality ofperistome 3a, 3b continuously, still, also can be not do not form continuously with about equally interval with about equally interval.

Here, forslot part 1a, 1b, by forming via following technology with respect to fiber web shown in Figure 4 100 as fiber assembly.For example, utilize netted supportingmember 300 shown in Figure 3,, thefiber 101 that constitutes thisfiber web 100 is moved from the upper face side gas jet from following side bearing fiber web 100.Form slot part 1a, 1b whereby.

Utilization is controlled the mobile offiber 101 that constitutes thisfiber web 100 from the fluid that mainly is made of gas of the upper face side injection offiber web 100.

Convex shapedpart 2a, 2b be onfiber web 100 not by the zone of the fluid jet that mainly constitutes by gas, by formingaforementioned slot part 1a, 1b, become relatively outstanding zone.

Here, shown in Fig. 3 A, 3B, netted supportingmember 300 forms with thewire 301 that inweaves along its length (LD) configuration with along the mode as thewire 302 of the width MD of horizontal direction configuration,wire 301 to stride across the mode ofwire 301, is alternately inweaving zig zag with mode, thewire 302 that strides acrosswire 302 on the thickness direction of netted supportingmember 300 on the thickness direction of netted supporting member 300.For example, the zigzag ofwire 302 differently inweaves mutually towards length direction (LD).

In addition, utilize the netted supportingmember 300 shown in Fig. 3 A, the 3B from following side bearing as thefiber web 100 of fiber assembly, when upper face side sprays mainly the fluid that is made of gas, preferably go up eachwire 301 approximate centre each other of configuration at length direction (LD) to the position thatfiber web 100 sprays.Whereby, thefiber web 100 that is configured on eachwire 301wire 302 each other moves, and formsperistome 3a, 3b.Thisperistome 3a, 3b are the hole portions that is formed with thisbondedfibre fabric 116 of a plurality of perforations inslot part 1 with the interval of regulation, are circular or substantially elliptical.In addition, in this form of implementation,interval formation peristome 3a, 3b with about equally still, are not limited thereto, and also can separate different intervals and form.

In addition,fiber web 100 moves by the low place to thewire 302 of the inclination of going up configuration at width (MD), forms theside edge part 14,16 in each ofperistome 3a, 3b respectively.That is, observe from width (WD), a near zone as the lateral margin ofperistome 3a or 3b provides aside edge part 14 or 16.In addition, theside edge part 14,16 with respect to each place ofperistome 3a, 3b forms anotherside edge part 15,17 as opposition side respectively.That is, near another zone as the lateral margin of theperistome 3a ofperistome 3a or 3b or 3b provides anotherside edge part 15 or 17.In each of anotherside edge part 15,17 inperistome 3a, 3b,fiber web 100 moves hardly.

Specifically, as Figure 1A, Figure 1B and shown in Figure 2, on each of convex shapedpart 2a, 2b, form theside edge part 14,16 in each ofperistome 3a, 3b.Here, aside edge part 16 atperistome 3b place is a lateral margin of going up opposition side with aside edge part 14 atperistome 3a place at width (WD).

Relative therewith, on each of convex shapedpart 2b, 2a, form anotherside edge part 15,17 at each place ofperistome 3a, 3b respectively.But this anotherside edge part 15,17 is compared with aside edge part 14,16, is to constitute the zone that thefiber 101 of thisfiber web 100 is not moved.

In addition, in this form of implementation, an above-mentionedside edge part 14,16, anotherside edge part 15,17 are formed on convexshaped part 2a, the 2b, still, are not limited thereto, and also can be formed amongslot part 1a, the 1b.

In addition,bondedfibre fabric 116 is the bondedfibre fabrics that are formed with the first connectingportion 4a (below sometimes " the first connectingportion 4a " is called connectingportion 4a simply) between thefirst peristome 3a and the second peristome 3b.That is, inslot part 1a or slotpart 1b, betweenadjacent peristome 3a andperistome 3b, form the first connectingportion 4a that forms with adjacent convex shapedpart 2a, mode that 2b couples together.As hereinafter described, the first connectingportion 4a is fibre density and weight per unit area fibre density and the high zone of weight per unit area than anotherside edge part 15 on thefirst peristome 3a.

For example can be preferably 0.5 to 5mm according to each height on the thickness direction of thisbondedfibre fabric 116 of convex shapedpart 2a, the 2b of thebondedfibre fabric 116 of this form of implementation for 0.3 to 15mm.In addition, the length of each of convex shapedpart 2a, 2b on the width (WD) ofbondedfibre fabric 116 is 0.5 to 30mm, is preferably 1.0 to 10mm.In addition, the distance between the summit of convex shapedpart 2a, the 2b of adjacency for example can be preferably 3 to 10mm for 0.5 to 30mm.

In addition, the height of each ofslot part 1a, 1b on the thickness direction ofbondedfibre fabric 116 is each below 90% of this height of convex shapedpart 2a, 2b, is preferably 0% to 50%, more preferably 1% to 20%.The length of each ofslot part 1a, 1b on the width (WD) ofbondedfibre fabric 116 for example can be preferably 0.5 to 10mm for 0.1 to 30mm.Adjacent slot part 1a, 1b distance each other is 0.5 to 20mm, is preferably 3 to 10mm.Here, the height on the so-called thickness direction is that 0% this zone of expression isperistome 3a, 3b.

By such design, for example, use at surface patch under the situation of thisbondedfibre fabric 116 as absorbent commodity, can form and be suitable for when having drained a large amount of regulation liquid, being not easy from the teeth outwards slotpart 1a, the 1b of ground contamination on a large scale.In addition, when applying excessive external pressure,, also keep the space that forms byslot part 1a, 1b easily even become convexshaped part 2a, 2b by the state of conquassation, even, also be not easy contaminated surface in large area applying under the situation that regulation liquid is excreted under the state of external pressure.And then, concavo-convex even under the situation that the liquid of the regulation in once absorbing absorber etc. externally returns under the pressure by on the surface of thisbondedfibre fabric 116, being formed with, with the area of contact skin also seldom.Therefore,bondedfibre fabric 116 has the advantage that is difficult to be attached to once more on the skin on a large scale.

Here, the assay method of the height ofslot part 1a, 1b or convexshaped part 2a, 2b or pitch, width is as described below.For example, under non-pressurized state, to workbench, utilize microscope to measurebondedfibre fabric 116 mountings by the cross-section photograph or the cross section map of bondedfibre fabric 116.In addition, to cut off thebondedfibre fabric 116 that becomes sample by the mode of convex shapedpart 2a, 2b and slotpart 1a, 1b.

When measuring height (length of thickness direction), will be from its lowermost position (that is workbench surface) ofbondedfibre fabric 116 towards the extreme higher position separately of convex shapedpart 2a, the 2b of top and slotpart 1a, 1b as highly measuring.

In addition, the mensuration of the pitch of convex shapedpart 2a, 2b is to measure the center distance each other of convex shapedpart 2a, 2b.Similarly, the mensuration of the pitch ofslot part 1a, 1b is to measure the center distance each other ofslot part 1a, 1b.

Measuring convex shaped part 2a.During the width of 2b, measure, similarly measure the Breadth Maximum of the bottom surface ofslot part 1a, 1b from its lowermost position (that is, the workbench surface) ofbondedfibre fabric 116 Breadth Maximum towards the bottom surface of convex shapedpart 2a, the 2b of top.

Here, the cross sectional shape for convexshaped part 2a, 2b does not have specific restriction.For example, can list dome-shaped, trapezoidal, triangle, Ω shape, quadrangle etc.In order to make sense of touch good, preferably, near the end face of convex shapedpart 2a, 2b and side is a curved surface.In addition, though for convexshaped part 2a, 2b under the pressure externally by under the situation of conquassation, also can keep the space that forms byslot part 1, preferably, from the bottom surface of convex shapedpart 2a, 2b to end face with reduced width.As the preferred cross sectional shape of convex shapedpart 2a, 2b, can be enumerated as the curve (curved surface) that is roughly dome-shaped etc.

In addition, each ofperistome 3a, 3b for example can be preferably 0.5 to 4mm for 0.1 to 5mm in the length on the length direction (LD) of bondedfibre fabric 116 (the perhaps length on the width (WD)).And, for example can be preferably 1 to 10mm for 0.5 to 30mm via the pitch ofadjacent peristome 3a of the first connectingportion 4a andperistome 3b.

The first connectingportion 4a equates with convexshaped part 2a, the 2b height on the thickness direction ofbondedfibre fabric 116 or is lower than this height at the height on the thickness direction ofbondedfibre fabric 116, is preferably 20% to 100% of this height, more preferably 40% to 7%.

In addition, the first connectingportion4a bondedfibre fabric 116 as the length on the length direction of longitudinal direction and as the length on the width of horizontal direction, for example be 0.1 to 5mm, be preferably 0.5 to 4mm.And the pitch between the first adjacent connectingportion 4a summit each other can be 0.5 to 30mm, is preferably 1 to 10mm.

In addition, in the first connectingportion 4a, the cross sectional shape on the length direction ofbondedfibre fabric 116 is for roughly tetragonal.In addition, the cross sectional shape of the first connectingportion 4a on the length direction ofbondedfibre fabric 116 is not limited to quadrangle, also can be domeshape, trapezoidal, triangle, Ω shape etc., do not have specific restriction.Expansion for the liquid of the regulation that is suppressed atslot part 1a, 1b place is preferably quadrangle roughly.In addition, under excessive external pressure, the first connectingportion 4a contacts with skin etc. and does not give foreign body sensation, and the end face of this first connectingportion 4a is preferably plane or curved surface.

2-2. fiber orientation, fiber density or weight per unit area

2-2-1. fiber orientation

As Figure 1A, Figure 1B or shown in Figure 2,bondedfibre fabric 116 has the different respectively zone of containing ratio of machine-direction oriented fiber.The zone that each are different for example, can listslot part 1a, 1b, include theside edge part 14,16 ofperistome 3a, 3b and convexshaped part 2a, the 2b etc. of anotherside edge part 15,17 onperistome 3a, the 3b.

Here, so-called fiber 101 (LD) is orientated along the length direction (longitudinal direction) as first direction, refers tofiber 101 and is orientated to the scope of+45 degree at-45 degree with respect to length direction (LD).Length direction (LD) is the direction of bondedfibre fabric or fiber web being sent via the manufacturing machine of bondedfibre fabric (MD).Will be alongst (LD) orientation fiber be called machine-direction oriented fiber.In addition, so-calledfiber 101 is along width (horizontal direction) the WD orientation as second direction, refer tofiber 101 with respect to second direction, be as width (WD) here perpendicular to the regulation of the bondedfibre fabric of the direction (CD) of first direction (LD), be orientated to+45 degree scopes at-45 degree.The fiber of broad ways (WD) orientation is called the horizontal orientation fiber.

Convex shapedpart 2a, 2b comprise theside edge part 14,16 onperistome 3a, the 3b and the zone of anotherside edge part 15,17 onperistome 3a, the 3b, but, remove outside theside edge part 14,16 on above-mentionedperistome 3a, the 3b, thefiber 101 at convexshaped part 2a, 2b place as a whole on the approximate equality of this convexshaped part 2a, 2b ground along the zone of the direction orientation of the length direction (LD) ofbondedfibre fabric 116 and width (WD).In other words, theside edge part 14,16 on above-mentionedperistome 3a, 3b, preferably, convexshaped part 2a, 2b moderately mix machine-direction oriented fiber and horizontal orientation fiber.

On the other hand, constitute thefiber 101 of theside edge part 14,16 onperistome 3a, the 3b, on the direction of the length direction (LD) ofbondedfibre fabric 116, be orientated in each of convex shapedpart 2a, 2b.For example, compare, alongst (LD) orientation with the orientation offiber 101 on convexshaped part 2a, the 2b.That is, we can say, thefiber 101 atside edge part 14 places on thefirst peristome 3a, the number of machine-direction oriented fiber is more than the number of horizontal orientation fiber.In addition, we can say, the fiber atside edge part 16 places in of thesecond peristome 3b, the number of machine-direction oriented fiber is more than the number of horizontal orientation fiber.For example, the containing ratio of the machine-direction oriented fiber atside edge part 14,16 places onperistome 3a, 3b is 55% to 100%, is preferably 60% to 100%.That is, aside edge part 14 on thesecond peristome 3b, the containing ratio of machine-direction oriented fiber is than the containing ratio height of horizontal orientation fiber.

Slotpart 1a, 1b as previously described, are fluid (for example, the hot blast) direct injection that mainly is made of gas, the zone that formsperistome 3a, 3b and the first connecting portion4a.In slot part 1a, 1b, the fiber 101 (machine-direction oriented fiber) of (LD) orientation is blowed aside edge part 14,16 sides amongperistome 3a, the 3b along its length.In addition, the fiber 101 (horizontal orientation fiber) of broad ways (WD) orientation is blowed connectingportion 4a side.Like this, thefiber 101 on the first connectingportion 4a ofslot part 1a, 1b becomes broad ways (WD) orientation as a whole.

Thereby in the first connectingportion 4a ofslot part 1a, 1b, the containing ratio of machine-direction oriented fiber is minimum in this bondedfibre fabric 116.In other words, the containing ratio of the horizontal orientation fiber of the first connectingportion 4a is the highest.That is, the containing ratio of the horizontal orientation fiber of the first connectingportion 4a is than the containing ratio height of machine-direction oriented fiber.

Specifically, the containing ratio with the horizontal orientation fiber among the first connectingportion 4a is 55% to 100%, 60% to 100% the mode of being preferably forms.Be lower than at the containing ratio of horizontal orientation fiber under 55% the situation, as hereinafter described, because the weight per unit area ofslot part 1a, 1b is low, so, be difficult to improve the intensity of bondedfibre fabric on width (WD).Like this, for example, use at surface patch under the situation of thisbondedfibre fabric 116 as absorbent commodity, in using the process of this absorbent commodity because and the friction of health, the longitude and latitude that can produce horizontal direction slides, causes damaged danger.

The mensuration of fiber orientation, デ ジ Le マ イ Network ロ ス コ-プ (digital microscope) VHX-100 that utilizes the キ of Co., Ltd.-エ Application ス to make carries out, and measures with assay method described below.(1) sample is provided with in its length direction is in correct direction on observation platform mode.(2) fiber that will appear at is brokenly nearby removed, and makes the most close preceding fiber of sample consistent with the focus of lens.(3) set the photography degree of depth (depth), on the picture of PC, make the 3D rendering of sample.Secondly, (4) convert 3D rendering to the 2D image, and in measurement range, it is a plurality of with the length direction parallel lines of five equilibrium rightly to draw on picture (5).(6) in each unit of parallel lines and sectionalization that draws, observing fiber orientation is length direction (LD) (first direction) or width (WD) (second direction), and mensuration is towards the ribbon number of all directions.Then, (7) by calculating with respect to for the whole fiber numbers in the setting range, towards the ratio of the ribbon number of the fiber orientation of length direction (LD) with towards the ratio of the ribbon number of the fiber orientation of width (WD), can measure and calculate fiber orientation.

2-2-2. the density of fiber

The fibre density of anotherside edge part 15,17 atperistome 3a, 3b place for example, is 0.005～0.2g/cm³, and then, be preferably 0.007～0.07g/cm³Fibre density at this convexshaped part 2a, 2b is lower than 0.005g/cm³Situation under because the deadweight or the external pressure of the liquid that contains among this convexshaped part 2a, the 2b, not only convex shapedpart 2a, 2b be easily by conquassation, and, the situation that exists the liquid that once absorbing under the situation of pressurization, to return easily.In addition, the fibre density at convexshaped part 2a, 2b is higher than 0.2g/cm³Situation under, the liquid of the regulation of causing at this convexshaped part 2a, 2b is difficult to move downwards, exist liquid holdup at this convexshaped part 2a, 2b, give the situation of the sensation of user's humidity.

The fibre density of theside edge part 14,16 amongperistome 3a, the 3b is more than 1.1 times of fibre density of anotherside edge part 15,17.

The fibre density of the first connectingportion 4a is at 0.05g/cm³More than, be preferably 0.1～0.5g/cm³In the fibre density of the first connectingportion 4a less than 0.05g/cm³Situation under, apply excessive external pressure, convexshaped part 2a, 2b by the situation of conquassation under, this first connectingportion 4a is too by conquassation sometimes.On the other hand, in the fibre density of the first connectingportion 4a greater than 0.5g/cm³Situation under, the liquid that falls into the regulation ofslot part 1a, 1b can be trapped in the first connectingportion 4a, excessive external pressure be applied on thisbondedfibre fabric 116 and with situation that skin directly contacts under, give damp sometimes.

As mentioned above, aside edge part 14 at thefirst peristome 3a place, aside edge part 16 at thesecond peristome 3b place, and the first connectingportion 4a can be described as anotherside edge part 15 at ratioopen portion 3a place and another high zone ofside edge part 17 fibre densities atperistome 3b place at least.

Particularly, theside edge part 14 atperistome 3a place and aside edge part 16 atperistome 3b place can be defined as along its length vertical high-density region that (longitudinal direction) (LD) extends.In addition, because a plurality ofperistome 3a, 3b alternately intermittently form inslot part 1a, 1b, so, as theside edge part 14 at theperistome 3a place of vertical high-density region, and theside edge part 16 atperistome 3b place, (LD) alternately intermittently formation also alongst.Therebybondedfibre fabric 116 has vertical high-density region that a plurality of (LD) along its length extends.

In addition,bondedfibre fabric 116, from the spatial area rate of measuring as the face side offormation slot part 1a, the 1b of a face side on the thickness direction ofbondedfibre fabric 116 and convexshaped part 2a, 2b, be lower than from as with the thickness direction of thisbondedfibre fabric 116 onformation slot part 1a, 1b and the spatial area rate measured of another face side of the face of the face opposition side of convex shapedpart 2a, 2b low.

By the fiber web of on netted supportingmember 300, carrying 100, because gravity, existfiber 101 to and the face side shifting of the face opposition side of the fluid jet that mainly constitutes by gas, in the tendency that narrows down near the distance between the fiber at the position of the face side of this opposition side.On the other hand, along with the face side near the fluid jet that mainly is made of gas, interfibrous distance has the tendency that broadens.

And then, by spraying the fluid that mainly constitutes, be forced on this netted supportingmember 300 near thefiber 101 of netted supportingmember 300 sides by gas, be orientated in the parallel plane mode that becomes with netted supporting member 300.Whereby, interfibrous distance further narrows down, and it is intensive easily that fiber becomes each other.In addition, in this state, by heat treatments such as heating furnace processing, the mutual hot adhesion of fiber, the free degree offiber 101 reduces, and the spatial area rate between the fiber reduces.

On the other hand, along with from the face of netted supportingmember 300 sides towards the face side of spraying mainly the fluid that constitutes by gas, fiber each other can be by undue conquassation, in addition, in convex shapedpart 2a, 2b, run into netted supportingmember 300 and rebounded by the injected fluid that mainly is made of gas,fiber 101 partly becomes with respect to this netted supportingmember 300 and vertically is orientated.In this state, by the mutual hot adhesion of fiber, the spatial area rate between the fiber uprises.

Here, so-called spatial area rate refers to the spatial area that there the is not fiber ratio with respect to the gross area.In addition, the assay method of spatial area rate is as described below.

At first, sensing equipment uses the デ ジ Le マ イ Network ロ ス コ-プ VHX-100 that utilizes the キ of Co., Ltd.-エ Application ス to make.At first, (1) on observation platform, the mode that becomes appropriate direction (being LD) with the direction alongslot part 1a, 1b and convexshaped part 2a, 2b here places sample on the sensing equipment, (2) locate on the summit of convex shapedpart 2a, 2b, from the outstanding face of convex shapedpart 2a, 2b and from the face of the outstanding face opposition side of convex shapedpart 2a, 2b, carry out following mensuration respectively.

(3) suitably set the power of a lens of sensing equipment and the magnifying power on the personal computer picture, with the fiber (removing the irregular fiber that appears at nearby) of close front side of the sample in focus of lens.Then, (4) suitably set the photography degree of depth (depth), make the 3D rendering of sample.

(5) 3D rendering is converted to the 2D image,, specify in the space between the fiber in this scope the volume complanation of setting.And then (6) carry out binarization (binaryzation) processing for the 2D image, and the position that fiber is existed is white, and the non-existent position of fiber is a black.Then, (7) make the non-existent position of fiber be white color inversion, measure the area of whitening etc.

Here, in this document, making magnifying power is 300 times, and the photography degree of depth is 220 μ m (per 20 μ m photography is once photographed 11 times altogether), carries out the mensuration of n=10, averages.

In addition, computer memory area occupation ratio as follows.

Spatial area rate (%)=(the space gross area (mm²Area (the mm of)/measurement range²)) * 100

Here, the space gross area can be calculated by (multiplication factor during the space gross area during mensuration/mensuration), and in addition, the measurement range area can be calculated by (multiplication factor during the measurement range area during mensuration/mensuration).

Because the spatial area rate is high more, the distance that is equivalent between the fiber is wide more thick more, so fiber becomes and moves easily, the free degree is high.And then, for the bondedfibre fabric that partly interfibrous distance is enlarged by opening processing etc., by improving each the spatial area rate in space, the integral body of the face of the fluid jet that mainly constitutes by gas for the quilt in the bondedfibre fabric, the distance between the fiber broadens.Therefore, for example, this bondedfibre fabric is being used under the situation of absorbent commodity etc., the resistance the when liquid that can reduce regulation such as excreta on the whole sees through this bondedfibre fabric 120 makes that liquid is easier to be moved to absorber etc.

Here, the spatial area rate of each of so-called space, the gross area that refers to the non-existent space of fiber is with respect to the ratio of the number in the non-existent space of fiber within the limits prescribed.Can calculate with following computing formula.

Spatial area (mm²/)=the space gross area (mm²)/space number (individual)

The spatial area rate that the face of the outstanding side of this convexshaped part 2a, the 2b from convex shapedpart 2a, 2b is measured poor with from the spatial area rate measured with the face of the outstanding face opposition side of this convexshaped part 2a, 2b, can be more than 5%, be preferably 5% to 80%, more preferably 15% to 40%.

In addition, the spatial area rate of measuring from the face of the outstanding side of convex shapedpart 2a, 2b is more than 50%, is preferably 50% to 90%, more preferably 50% to 80%.

And then, for example can be 3000 μ m from each the spatial area in space that the face of the outstanding side of convex shapedpart 2a, 2b is measured²More than, be preferably 3000 to 30000 μ m², 5000 to 20000 μ m more preferably²

2-2-3. weight per unit area

The average weight per unit area ofbondedfibre fabric 116 integral body particularly for example can be for 10 to 200g/m², be preferably 20 to 100g/m²For example, under the situation of the surface patch that this bondedfibre fabric 180 is used for absorbent commodity, when weight per unit area is lower than 10g/m²The time, in use damaged easily sometimes.In addition, the weight per unit area at thisbondedfibre fabric 116 is higher than 200g/m²Situation under, be difficult to make smoothly the liquid that causes to move sometimes downwards.

More than 1.1 times, the weight per unit area of aside edge part 14,16 can be enumerated as 15～250g/m to the weight per unit area of aside edge part 14,16 atperistome 3a, 3b place with respect to the weight per unit area of anotherside edge part 15,17², be preferably 20～120g/m²The weight per unit area of theside edge part 14,16 inperistome 3a, 3b is less than 15g/m²Situation under, not only to make that convexshaped part 2a, 2b collapse easily routed owing to be included in the weight of the liquid in this convexshaped part 2a, the 2b own or external pressure, and, exist the liquid that was once absorbing adding the situation about returning easily of depressing.In addition, at the weight per unit area of theside edge part 14,16 atperistome 3a, 3b place greater than 250g/m²Situation under, the liquid of the regulation of causing at this convexshaped part 2a, 2b is difficult to move downwards, liquid holdup gives the sensation of user's humidity sometimes at this convexshaped part 2a, 2b.

Anotherside edge part 15,17 atperistome 3a, 3b place, its weight per unit area can be enumerated as 10g/m²～200g/m², be preferably 20～100g/m²At the weight per unit area of anotherside edge part 15,17 atperistome 3a, 3b place less than 10g/m²Situation under owing to be included in the weight own or the external pressure of the liquid among this convexshaped part 2a, the 2b, exist not only convex shapedpart 2a, 2b easily by conquassation, and the liquid that was once absorbing is adding the situation about returning easily of depressing.In addition.At the weight per unit area of anotherside edge part 15,17 ofperistome 3a, 3b greater than 200g/m²Situation under, the liquid of the regulation that this convexshaped part 2a, 2b cause is difficult to downwards to move, liquid holdup gives the sensation of user's humidity sometimes at this convexshaped part 2a, 2b.

For the weight per unit area of the first connectingportion 4a, can list is 15～250g/m², be preferably 20～120g/m²At the weight per unit area of this first connectingportion 4a less than 15g/m²Situation under, apply undue external pressure, convexshaped part 2a, 2b by the situation of conquassation under, exist this first connectingportion 4a too by the situation of conquassation.In addition, at the weight per unit area of this first connectingportion 4a greater than 250g/m²Situation under, the liquid that falls into the regulation ofslot part 1a, 1b can be trapped in the first connectingportion 4a, be applied on thisbondedfibre fabric 116 in excessive external pressure, with situation that skin directly contacts under, give moist sensation sometimes.

As mentioned above, the weight per unit area height of anotherside edge part 15 at aside edge part 14 ratioopen portion 3a places at thefirst peristome 3a place.Similarly, the weight per unit area height of anotherside edge part 17 at aside edge part 16 to thesecond peristome 3b places at thesecond peristome 3b place.And then the first connectingportion 4a is than the weight per unit area height of anotherside edge part 15 at thefirst peristome 3a place.

2-3. other

For example, the bondedfibre fabric with this form of implementation be used to absorb the liquid of regulation or the situation that makes it to see through under, make porous inslot part 1a, 1b make that liquid sees through, convexshaped part 2a, 2b are difficult to keep liquid mode.And then, be formed onperistome 3a, 3b onslot part 1a, the 1b, except that liquid, solid is seen through.

Because onslot part 1a, 1b, be formed with a plurality ofperistome 3a, 3b, so, be suitable for making liquid and solid to see through.And then, becausefiber 101 broad ways (WD) orientation of locating in the bottom ofslot part 1a, 1b, so, can prevent length direction (LD) upward excessive flow and the on a large scale expansion of liquid at thebondedfibre fabric 116 ofslot part 1a, 1b.Thoughslot part 1a, 1b weight per unit area are low, owing to make width (WD) orientation (CD orientation) offiber 101 along thisslot part 1a, 1b, so bondedfibre fabric increases to the intensity (CD intensity) of width (WD).

2-4. manufacture method

The manufacture method of adhesive-bonded fabric of the present invention is manufacture method as described below: by the Fluid injection that will be mainly consisted of by gas to be on the fiber assembly under the state with free degree as forming the fiber that consists of this fiber assembly of the fiber assembly of sheet roughly, make form a plurality of as the peristome of length direction (LD) formation of longitudinal direction, a side edge part on the width as horizontal direction (WD) in each of aforementioned a plurality of peristomes than the high adhesive-bonded fabric of fibre density of the another one side edge part on the aforementioned width (WD) in each of aforementioned a plurality of peristomes.

Below, utilize Fig. 3 to Fig. 8, describe for the method for manufacturing according to thebondedfibre fabric 116 of this form of implementation.At first, with the upper face side offiber web 100 mountings to netted supporting member 300.In other words, utilize netted supportingmember 300 from following side bearingfiber web 100.

In addition, the netted supportingmember 300 of the state that is in thisfiber web 100 of supporting is moved along the length direction (CD) as longitudinal direction, upper face side by thefiber web 100 that moves from this is gas jet continuously, can make thebondedfibre fabric 116 in this form of implementation.

To shown in Figure 8, the bondedfibrefabric manufacturing installation 90 of making thebondedfibre fabric 116 of this form of implementation comprises as Fig. 5: netted supportingmember 300, and this netted supportingmember 300 is from thefiber web 100 of a side bearing as fiber assembly; As theejection portion 910 of injection equipment and not shown air feed part, described injection equipment is from being sprayed the fluid that mainly gas be made of by netted supportingmember 300 from thefiber web 100 as fiber assembly of an aforementioned side bearing as the another side side direction thefiber web 100 of this fiber assembly; As theconveyer 930 of travel mechanism, described travel mechanism makes thefiber web 100 as fiber assembly move to the direction F of regulation.

As shown in Figure 3, netted supportingmember 300 for example comprises: the fluid that mainly is made of gas that the upper face side as the another side side fromfiber web 100 sprays can be to the ventilating part of the conduct in the netted supportingmember 300 with the downside ventilation of a side opposition side that disposesfiber web 100; And the fluid that mainly is made of gas that sprays of the upper face side fromfiber web 100 can not and constitute the stuffiness portion that thefiber 101 offiber web 100 can not move to the opposition side in the netted supportingmember 300 to the ventilation of the downside in the netted supportingmember 300.

That is, the part ofwire 301 in the netted supportingmember 300 andwire 302 and theirintersection point part 304 become stuffiness portion.On the other hand, as mentioned above, as being become ventilating part by thehole portion 303 of the part ofwire 301 in the netted supportingmember 300 andwire 302encirclements.Hole portion 303 in this netted supportingmember 300 can make thefiber 101 that constitutesfiber web 100 to this netted supportingmember 300 in mounting the opposite side shifting of one side offiber web 100 is arranged.Thereby, can form to the outstanding jut of thickness direction.For jut, in the third form of implementation, describe in detail (with reference to Figure 11).

As mentioned above, netted supportingmember 300 is gone up thewire 301 of configuration and is formed in the mode that goes up thewire 302 of configuration as the width (WD) of horizontal direction to inweave at length direction (LD), andwire 302 is in a zigzag in the mode that strides acrosswire 301 on thickness direction and inweaves.The zigzag of thiswire 302 differently inweaves mutually towards length direction (LD).

And then, in other words, stuffiness portion with the lower side of the apex of the last side direction of awire 301 and awire 302 to the mode that couples together of apex, with the lower side of the another onewire 301 ofwire 301 adjacency to apex and inweave with mode that the upside apex of the another onewire 302 ofwire 302 adjacency couples together.

Here, as mentioned above, utilizing netted supportingmember 300 shown in Figure 3 from side bearingfiber web 100 below the one side side, when upper face side sprays mainly the fluid that is made of gas, ejiction opening 913 with the pass, position of thewire 301 of (LD) configuration along its length is, preferably, from the fluid jet that mainly constitutes by gas ofejiction opening 913 ejection to theapproximate centre wire 301 and thewire 301.

Whereby, thefiber web 100 that is configured on thewire 302 moves by the injected fluid that mainly is made of gas,form peristome 3a, 3b, move to the low direction of the inclination ofwire 302, form theside edge part 14,16 amongperistome 3a, the 3b by fiber web 100.In addition, on the side edge part of the opposition side of theside edge part 14,16 on the width (WD) ofperistome 3a, 3b, that is, on otherside edge part 15,17,fiber web 100 moves hardly.

Here, the difference of height of the inclination of thewire 302 of configuration is preferably 0.5～10mm, more preferably 1.0～5.0mm more than 0.5mm on length direction (LD).

Under the situation of this supporting member,, venting quality is partly changed by partly changing the method inweave or the rugosity of silk, the shape of silk.

Netted supportingmember 300, for example, can use by resins such as polyester, polyphenylene polyphenylene sulfide, nylon, conductive monofilaments form the silk or by metals such as stainless steel, copper, aluminium forms thread etc. member.

A fluid part that mainly is made of gas of spraying from the upper face side offiber web 100 is by thewire 301 this netted supportingmember 300,wire 302 and theirintersection point part 304 obstructions, a part is not hindered by netted supportingmember 300, ventilation downwards.

But the venting quality of wire that becomesstuffiness portion 301 in this case and wire 302 (intersection point part 304 particularly wiry) below 90%, is preferably 0% to 50% with respect to the venting quality athole portion 303 places, more preferably 0% to 20%.So-called 0% expression in fact mainly can not be ventilated by the fluid that gas constitutes.

In addition, for example can to list be 10000 to 60000cc/cm to the venting quality in the zone ofhole portion 303 grades that become ventilating part²Min is preferably 20000 to 50000cc/cm²Min.

Preferably, employed netted supporting member becomes the sliding height of the zone of stuffiness portion than the surface in the zone that forms ventilating part.By the sliding height, because in the zone that intersects with stuffiness portion in the zone of the fluid jet that mainly is made of gas,fiber 101 is mobile easily, so, can improve the formability ofperistome 3a, 3b and the first connectingportion 4a.

Here, as Fig. 5 and shown in Figure 6, bondedfibre fabric 115 (in this form of implementation, being equivalent to bondedfibre fabric 116), in bondedfibrefabric manufacturing installation 90, from the direction stipulated successively movingweb 100 one side form on one side.This travel mechanism makes to be in by above-mentioned netted supportingmember 300 and moves to prescribed direction from thefiber web 100 as fiber assembly under the state of a side bearing.Specifically, thestate fiber web 100 down that is in by the fluid jet that mainly is made of gas is moved to the direction F that stipulates.As travel mechanism, for example, can list conveyer 930.Conveyer 930 comprises: theaeration band portion 939 of the aeration of the ring-type that the formation horizontal direction of the netted supportingmember 300 of mounting is long; Be configured in two ends, make the rotating part 931,933 of theaeration band portion 939 of this ring-type along the direction rotation of regulation as the length direction (LD) of the inboard of theaeration band portion 939 that forms the long ring-type of horizontal direction.

As mentioned above,conveyer 930 makes the netted supportingmember 300 that is under the state of following side bearingfiber web 100 move to the direction F of regulation.Specifically, as shown in Figure 7,fiber web 100 is moved in the mode of the downside by ejection portion 910.And then, makefiber web 100 to move by mode as the inside of theheater portion 950 of the two sides opening of heating arrangements.

Injection equipment comprises not shown air feed part and ejection portion 910.Not shown air feed part is connected toejection portion 910 viasnorkel 920.Snorkel 920 can be connected to the upside ofejection portion 910 with ventilating.As shown in Figure 8, inejection portion 910, form a plurality ofejiction openings 913 with the interval of stipulating.

As shown in Figure 7, the gas of supplying gas toejection portion 910 viasnorkel 920 from not shown air feed part is sprayed from a plurality ofejiction openings 913 that are formed on ejiction opening 910.Be ejected into continuously from the upper face side of thefiber web 100 of following side bearing on netted supportingmember 300 from the gas of a plurality ofejiction opening 913 ejections.Specifically, be ejected into the upper face side that is in thefiber web 100 that is transferred the state thatdevice 930 moves along the direction F of regulation continuously from the gas of a plurality ofejiction openings 913 ejections.

Below ejection portion 910,915 pairs of suction unit being configured in netted supportingmember 300 downsides from 910 ejections of ejection portion, the gas of netted supportingmember 300 ventilations etc. is carried out air-breathing.Here, air-breathing by what utilize thissuction unit 915 to carry out, the mode thatfiber web 100 can be adjacent on the netted supportingmember 300 is located.And then, by air-breathing, can under the state of the slot part shapes such as (concavo-convex) that further keeps being shaped, inheater portion 950, carry by air flow.In this case, preferably, when utilizing air flow to be shaped, on one side air-breathing one side be transported toheater portion 950.

From the temperature of the fluid that mainly is made of gas of each ejiction opening 913 ejections can be normal temperature as first kind of form of implementation also, but, for example, for the formability that makes slot part (concavo-convex), peristome good, this temperature can be adjusted to more than the softening point of the thermoplastic fibre at least that constitutes fiber assembly, preferably, can adjust to fusing point+scope of 50 ℃ to-50 ℃ temperature in.When fiber softening, because the reduction of the bounce of fiber itself, so, the shape of utilizing maintenance fiber such as air flow to be arranged again easily is when further raising temperature, because fiber heat bonding each other begins, so, can more easily keep the shape of slot part (concavo-convex) etc.Thereby, be easy to carry in the state heater 50 that keeps slot part (concavo-convex) etc.

As theheater portion 950 of heating arrangements, the two ends on prescribed direction F are by opening.Thereby, be positioned in thefiber web 100 that is transferred on the netted supportingmember 300 thatdevice 930 moves, in the heating space that is formed atheater portion 950 inside, move continuously with the holdup time of regulation.For example, contain under the situation of thermoplastic fibre in thefiber 101 that constitutesfiber web 100, thebondedfibre fabric 115 that heating mutually combinesfiber 101 in thisheater portion 950 can pass.

In addition, in order to formbondedfibre fabric 116, also can use the supporting member different with netted supportingmember 300 withperistome 3a, 3b.Utilize employed supporting member, can changeslot part 1a, 1b, convexshaped part 2a, 2b, the size ofperistome 3a, 3b and the first connectingportion 4a or arrangement etc.For example, can list with metal sleeves such as stainless steel, copper, aluminium.As sleeve, can list the example of above-mentioned metal plate sections being dug through with the figure of regulation.The part that this metallic plate is dug through becomes ventilating part, and the part that metal is not dug through becomes stuffiness portion.In addition, with top described the same, in stuffiness portion, in order to improve the sliding on surface, preferably, its surface is level and smooth.

Suction unit 915 is equipped with in addition, at this moment, preferably,, the fluid that mainly constitutes that described suction unit is sprayed tobondedfibre fabric 116 from the downside attraction of netted supportingmember 300 or above-mentioned sleeve supporting member by gas.Attract (air-breathing) injected fluid that mainly constitutes by thissuction unit 915, prevent that the main fluid that is made of gas of running into netted supportingmember 300 from rebounding, and upsets the shape offiber web 100 superfluously by gas.

The degree that thefiber 101 that attracts mainly the intensity of the fluid that is made of gas to reach the zone of the fluid jet that will mainly be made of gas is pressed on the supporting member gets final product.In addition, in order to keep being pressed to the state on the supporting member, the temperature of the injected fluid that mainly is made of gas preferably constitutes more than the softening point of fiber at least a portion of thefiber 101 that constitutesbondedfibre fabric 116, particularly preferably in more than the softening point, below the fusing point.

In addition, air quantity by adjusting the injected fluid that mainly is made of gas or temperature, soakage, the aeration of supporting member, the weight per unit area offiber 100 etc. can change the shape of convex shapedpart 2a, 2b orperistome 3a, 3b and the first connectingportion 4a etc.For example, in the amount approximate equality of the main fluid that is made of gas of amount that makes the injected main fluid that is made of gas and attraction (air-breathing) or attract under the many situations of the amount of the main fluid that is made of gas of (air-breathing), the rear side of convex shapedpart 2a, 2b in thebondedfibre fabric 116 forms according to the shape of netted supportingmember 300.

And then, suck the fluid that mainly constitutes by downside by gas from netted supportingmember 300, fiber by the zone of spraying mainly the fluid that is made of gas moves while being pushed to these netted supportingmember 300 sides, so fiber focuses on netted supportingmember 300 sides.In addition, at convexshaped part 2a, 2b, collide with netted supportingmember 300 by the injected fluid that mainly is made of gas, moderately rebound, fiber becomes partly the state towards thickness direction.

3. other form of implementation

Below, other form of implementation of bondedfibre fabric of the present invention is described.In addition, in the form of implementation below, do not have the part of special instruction same, under the label of the accompanying drawing situation identical, give identical label with above-mentioned form of implementation with above-mentioned form of implementation.

Below, utilize Fig. 9 to Figure 11 that second kind of form of implementation and the third form of implementation of bondedfibre fabric of the present invention are described.Second kind of form of implementation and the third form of implementation are variform other forms of implementation of bondedfibre fabric.

3-1. second kind of form of implementation

Utilize Fig. 9, Figure 10 that second kind of form of implementation of bondedfibre fabric of the present invention is described below.

3-1-1. bondedfibre fabric

As Fig. 9, shown in Figure 10,bondedfibre fabric 140 differences of this form of implementation are to be equipped with the second connectingportion 4b, this second connectingportion 4b be formed at and the opposition side of thesecond peristome 3b of thefirst peristome 3a adjacency and and the3rd peristome 3c of thefirst peristome 3a adjacency between.In addition, thebondedfibre fabric 140 of this form of implementation and the difference of first kind of form of implementation are: aside edge part 18 at theperistome 3c of aside edge part 14 at aside edge part 16 at thesecond peristome 3b place, the first connectingportion 4a,peristome 3a place, the second connectingportion 4b, second adjacency, theperistome 3c place of second adjacency is continuous agley.In addition, thebondedfibre fabric 140 of this form of implementation, itsslot part 1a, 1b, convexshaped part 2a, 2b,peristome 3a, 3b, aside edge part 14,16 atperistome 3a, 3b place, anotherside edge part 15,17 atperistome 3a, 3b place, the first connectingportion 4a, their fiber orientation, fiber density and weight per unit area are identical with above-mentioned form of implementation.

Below, except that thefirst peristome 3a and thesecond peristome 3b, with thefirst peristome 3a, with the example of the3rd peristome 3c of thesecond peristome 3b opposition side adjacency (below sometimes the3rd peristome 3c is calledperistome 3c simply) as a plurality of peristomes 3, just with above-mentioned form of implementation differenceexplanation bondedfibre fabric 140.

3-1-2. the summary of bondedfibre fabric

As Fig. 9, shown in Figure 10, thebondedfibre fabric 140 of this form of implementation as mentioned above, is except thatperistome 3a, 3b, is formed with the bondedfibre fabric of peristome 3c.In other words,bondedfibre fabric 140 bondedfibre fabric that to beperistome 3a, 3b, 3c form according to the order ofperistome 3c,peristome 3a,peristome 3b along the nearly front of length (vertically) direction (LD) from figure ofbondedfibre fabric 140.

In addition,bondedfibre fabric 140 is same with theside edge part 14,16 amongperistome 3a, the 3b, and the width (WD) that is inbondedfibre fabric 140 atperistome 3c is gone upside edge part 18 of formation.Here, aside edge part 18 at the3rd peristome 3c place be with thefirst peristome 3a in aside edge part 14 go up the side edge part of opposition side at width (WD).Relative therewith, be formed with the another oneside edge part 19 on above-mentioned width (WD) ofperistome 3c on convexshaped part 2a, the 2b.

In addition,bondedfibre fabric 140 is formed in the bondedfibre fabric of the second connectingportion 4b that forms between thefirst peristome 3a and the 3rd peristome 3c.That is, inslot part 1a or slotpart 1b, between the adjacentfirst peristome 3a and the3rd peristome 3c, form will clip second connectingportion 4 that the adjacent convex shapedpart 2a ofslot part 1a or slotpart 1b, mode that 2b links up form.In other words, a plurality of second connectingportion 4b that form with the interval of regulation with convexshaped part 2a and with it the convexshaped part 2b of adjacency couple together.Such as will be described, the second connectingportion 4b is another the high zone ofside edge part 15 fibre densities than thefirst peristome 3a place.

As mentioned above, the3rd peristome 3c andperistome 3a, 3b similarly form, aside edge part 18 and aside edge part 14,16 similarly form, and anotherside edge part 19 similarly forms with anotherside edge part 15,17, and the second connectingportion 4b and the first connectingportion 4a similarly form.Because their size, thickness, fiber orientation and weight per unit area, spatial area rate etc. form equally, so, its explanation omitted.

3-1-3. the density of fiber

As Fig. 9 and shown in Figure 10, the same with the first connectingportion 4a, the second connectingportion 4b is another high zone ofside edge part 15 fibre densities at ratioopen portion 3a place.In addition, as mentioned above, aside edge part 14 at the first connectingportion 4a,peristome 3a place is another high zone ofside edge part 15 fibre densities at ratioopen portion 3a place too.

That is, aside edge part 14 at the first connectingportion 4a,peristome 3a place, and the second connectingportion 4b is highdensity zone.Thereby, because on the width (WD) ofbondedfibre fabric 140, formation is the unlimited コ font of opposition side (side's side) of aside edge part 14 atperistome 3a place, so theside edge part 14 and the second connectingportion 4b at the first connectingportion 4a,peristome 3a place can be defined as コ font high-density region as a whole.

In addition, because a plurality ofperistome 3a, 3b, 3c alternately form onslot part 1a, 1b continuously, so, as theside edge part 14 at the first connectingportion 4a of the high-density region of コ font,peristome 3a place, and the second connectingportion 4b also form continuously along the length direction (LD) ofbondedfibre fabric 140.

Thereby,, can be described as the bondedfibre fabric of the コ font high-density region that is equipped with a plurality of (LD) along its length extension as thebondedfibre fabric 140 of this form of implementation.In addition, コ font high-density region be comprise as with the high-density region of " font of falling コ " of the negative shape of " コ font ", that is, comprise the zone of the font of falling コ high-density region.In addition, as this form of implementation, also can form a pair of " コ font " high-density region atslot part 1a, 1b in the mode of the high-density region of " font of falling コ " that form " コ font " high-density region atslot part 1a and form atslot part 1b, also can be to form " コ font " high-density region atslot part 1a, to form identical shaped " コ font " high-density region in the mode ofslot part 1b formation " コ font " high-density region atslot part 1a, 1b.

In addition, as mentioned above, except that theside edge part 16 at theside edge part 14 at thefirst peristome 3a place, thesecond peristome 3b place, the first connectingportion 4a, theside edge part 18 of the second connectingportion 4b and the3rd peristome 3c is also than the high highdensity zone of anotherside edge part 15 fibre densities at thefirst peristome 3a place.

In addition, as Fig. 9 and shown in Figure 10, thebondedfibre fabric 140 of this form of implementation is that theside edge part 18 at aside edge part 14, the second connectingportion 4a and the3rd peristome 3c place at aside edge part 16, the first connectingportion 4a, thefirst peristome 3a place at thesecond peristome 3b place is as a whole to be the bondedfibre fabric that the continuous mode of crooked shape forms high-density region.For theside edge part 14 at theside edge part 16 at thesecond peristome 3b place, the first connectingportion 4a, thefirst peristome 3a place, the second connectingportion 4a, and theside edge part 18 at the3rd peristome 3c place, they can be defined as forniciform high-density region as a whole.

In addition, owing to form a plurality ofperistome 3a, 3b, 3c atslot part 1a, 1b, so, as theside edge part 14 at theside edge part 16 at thesecond peristome 3b place of forniciform high-density region, the first connectingportion 4a, thefirst peristome 3a place, the second connectingportion 4a, and theside edge part 18 at the3rd peristome 3c place also along length direction (LD) formation of bondedfibre fabric 140.Thereby thebondedfibre fabric 140 of this form of implementation can be described as the bondedfibre fabric of the forniciform high-density region that is equipped with a plurality of length alongslot part 1a, 1b (vertically) directions (LD) extension.

Can utilize above-mentioned bondedfibrefabric manufacturing installation 90 to make thebondedfibre fabric 140 of this form of implementation.The manufacture methods of the bondedfibre fabric of this bondedfibrefabric manufacturing installation 90 etc. can be with reference to the record in the explanation of the manufacture method of above-mentionedbondedfibre fabric 116 and bondedfibre fabric manufacturing installation 90.For example, compare with first kind of form of implementation, in this form of implementation, (for example spraying the main fluid that constitutes by gas strong, hot blast) under the situation or under the many situations of the amount of the main fluid that constitutes by gas that sprays, applying hardly on thefiber web 100 under the situation of line tension, perhaps (for example at the main fluid that constitutes by gas, hot blast) will jet before thefiber web 100 under the situation such as some overfeeding, and can utilize above-mentioned bondedfibrefabric manufacturing installation 90 to makebondedfibre fabrics 140.

3-2. the third form of implementation

Below, utilize Figure 11 to illustrate that the third form of implementation of bondedfibre fabric of the present invention describes.

3-2-1. bondedfibre fabric

As shown in figure 11, be according to the difference of thebondedfibre fabric 150 of this form of implementation, in the another side side, outstanding along the direction identical with the outstanding direction of convex shapedpart 2a, 2b with the corresponding zone of convex shapedpart 2a, 2b.In addition, the difference of thebondedfibre fabric 150 of this form of implementation is, forms a plurality ofjuts 10 in the another side side.In addition, thebondedfibre fabric 150 of this form of implementation,side edge part 14,16,18 atslot part 1a, 1b, convexshaped part 2a, 12b,peristome 3a, 3b, 3c,peristome 3a, 3b, 3c place, anotherside edge part 15,17,19 atperistome 3a, 3b, 3c place, the first connectingportion 4a, the second connectingportion 4b, their aspects such as fiber orientation, fiber density and weight per unit area are identical with above-mentioned form of implementation.Below, describe for difference.

3-2-2. bondedfibre fabric summary

Shown in Figure 11 A, Figure 11 B, according to thebondedfibre fabric 150 of this form of implementation, alternately formslot part 1a, 1b side by side to divide about equally at interval, betweenslot part 1a and slotpart 1b, alternately be formed with convexshaped part 2a, 2b with about equally interval.In addition,bondedfibre fabric 150, in its another side side, be arranged in convex shapedpart 2a, 2b the bottom surface the zone alongst (LD) to form in the outstanding mode of the one side side direction identical with this convexshaped part 2a, 2b.In other words,bondedfibre fabric 150 is in the another side side of thisbondedfibre fabric 150, and it is recessed and form recess to be equivalent to the zone of bottom of convex shapedpart 2a, 2b in this one side side, and the zone of bottom surface that is equivalent to convex shapedpart 2a, the 2b of this one side side becomes convex.

In addition, shown in Figure 11 A, Figure 11 B,bondedfibre fabric 150 is such bondedfibre fabrics: a side edge part that is equivalent to thefirstperistome 3a place 14 of another side side, aside edge part 16 at thesecond peristome 3b place, the first connectingportion 4a, the second connectingportion 4b, and the part of theside edge part 18 at the3rd peristome 3c place form thejut 10 of the specific length of the convex shaped part that a plurality of conducts give prominence to along thickness direction.

Jut 10 forms highlightedly along thickness direction after theside edge part 16, the first connectingportion 4a, the second connectingportion 4b that constitute aside edge part 14 as thefirst peristome 3a place of high-density region, thesecond peristome 3b place, thefiber 101 that reaches thefiber web 100 in theside edge part 18 at the3rd peristome 3c place leave netted supporting member 300.That is, constitute, be subjected to the effect of thewire 301 and thewire 302 of netted supportingmember 300, to form a plurality ofjuts 10 along the outstanding mode of the thickness direction of thisfiber web 100 by thefiber 101 of thefiber web 100 of the fluid jet that mainly constitutes by gas.

Shown in Figure 11 B, the cross sectional shape ofjut 10 on length direction (LD) is roughly quadrangle.In addition, the cross sectional shape ofjut 10 on length direction (LD) is not limited to roughly quadrangle, also can be domeshape, and be trapezoidal, triangle, and Ω shapes etc. do not have specific restriction.In order to be suppressed at the expansion of the liquid of stipulating amongslot part 1a, the 1b, be preferably roughly quadrangle.In addition, in order to contact with skin etc. in undue external pressurelower process portion 10 and do not give foreign body sensation, the end face of thisprojection 10 is preferably plane or bending.

In addition, in this form of implementation, the cross sectional shape ofjut 10 on length direction (LD) is roughly tetragonal, but, for example, also can be the jut of the jut of triangular shape (triangle column), jut that the top in triangle (on the triangular prism) on the thickness direction is curved surface, four horn shapes (quadrangular prism shape) or the jut that tilts with respect to thickness direction as these juts etc.

Observing under the situation ofbondedfibre fabric 150 from the one side side, forming a plurality ofjuts 10 regularly, be formed on roughly foursquare a plurality of pars between each of described a plurality ofjut 10, be formed on a plurality ofperistome 3a, 3b, 3c in each a pair of side of described a plurality of pars.

3-2-3. manufacture method and netted supporting member

The manufacture method of thebondedfibre fabric 150 of this form of implementation is with recited above the same, but, as hereinafter described, compare with second kind of form of implementation, under the many situations of the Fluid Volume that mainly constitutes, can utilize above-mentioned bondedfibrefabric manufacturing installation 90 to makebondedfibre fabric 150 by gas.In addition, the netted supportingmember 300 that uses when making thisbondedfibre fabric 150 is identical with netted supportingmember 300 in above-mentioned first kind of form of implementation.

That is,, under the state that utilizes netted supportingmember 300 side bearing below it, spray the fluid that mainly constitutes by gas as thefiber web 100 of fiber assembly.At this moment, from the below of netted supportingmember 300, attract (air-breathing) injected fluid that mainly constitutes by gas.And, the amount that makes the fluid that mainly is made of gas that is attracted (air-breathing) is less than the amount of the injected fluid that mainly is made of gas, promptly, under the many situation of the amount of the main fluid that constitutes by gas of (air-breathing) of being attracted in the injected main fluid ratio that constitutes by gas, rebound by the main fluid that constitutes by gas that makes injection, can according to form to the outstanding mode of the direction identical with convexshaped part 2a, 2b in the upper face side of convex shapedpart 2a, 2b convexshaped part 2a, 2b below side (bottom surface side).Whereby, relatively outstanding in the zone of the another side side of the bottom surface that is equivalent to slotpart 1a, 1b, form from following side-prominent convex shaped part.

4. purposes example

As the purposes of bondedfibre fabric of the present invention, for example, can list surface patch in the absorbent commodity of sanitary napkin, lining, diaper etc. etc.In this case, convex shaped part can be any side in skin surface side, the rear side, still, by being formed on skin side, owing to can reduce contact area with skin, so, be not easy to give the damp that causes by body fluid.In addition, surface patch and the intermediate between the absorber that also can be used as absorbent commodity uses.Owing to reduce with the contact area of surface patch or absorber, so, there is the situation about returning of being not easy from absorber.In addition, owing to reduce with the contact area of skin or have a buffering sense, so, also can use in the outside (the outside back side) of the lateral plate of absorbent commodity, diaper etc., the negative material of plane fixture (face Off ア ス Na-) etc.In addition, also can be used to remove many aspects such as wiper attached to dust on bed or the health or dirt etc., mouth mask, breast milk pad.

4-1. the surface patch of absorbent commodity

Purposes as bondedfibre fabric of the present invention, as Figure 12 and shown in Figure 13, for example, can list and to have concavo-convex and to have the position for example fibre density high bondedfibre fabric of anotherside edge part 15 atperistome 3a, 3b place of the fibre density of aside edge part 14 among a plurality ofperistome 3a, 3b and the first connectingportion 4a andperistome 3a, the 3b, situation about using as the surface patch 401,402 of the absorbent commodity that convexshaped part 2a, 2b is configured in the skin surface side than other at recess (slotpart 1a, 1b).In this case, preferably, the mode that becomes skin side with the face that is formed with convexshaped part 2a, 2b disposes this bondedfibre fabric.

The fibre density of aside edge part 14 amongperistome 3a, the 3b is higher relatively, that is, and and the rigidity height.Thereby,, can prevent easily that alsoperistome 3a, 3b are by conquassation even apply load to a side edge part 14.In addition, the fibre density of anotherlateral margin 15 atperistome 3a, 3b place is relatively low,, can prevent the liquid holdup at the periphery ofperistome 3a, 3b that is.

Under with the situation of this bondedfibre fabric as surface patch 401,402 uses of absorbent commodity, when the liquid of regulation was drained, this liquid mainly fell into slot part.In addition, owing to be provided with peristome, so, for example,, also move to absorber easily by peristome even contain the liquid with viscosity of solid constituent, can suppress liquid and expand from the teeth outwards on a large scale.

In addition, because the major part of the fiber among the first connectingportion 4a is orientated along width (WD), to the TENSILE STRENGTH height of width (WD), can prevent to apply in the process towards the power of friction of width (WD) etc. and make this surface patch breakage wearing of absorbent commodity.

Thereby,, also can keep low with the contact area of skin even be applied to the load variations of showing on the sheet because the posture change of health makes, so, can keep sense of touch, and then, returned even once be absorbed the liquid of bulk absorption, and also be difficult to be attached on the skin once more on a large scale.

4-2. the intermediate of absorbent commodity

Purposes as bondedfibre fabric of the present invention, as shown in figure 14, for example, can list with have concavo-convex and the fibre density of aside edge part 14 that has a plurality ofperistome 3a, 3b and the first connectingportion 4a andperistome 3a, 3b place at recess (slotpart 1a, 1b) than other the position high bondedfibre fabric of fibre density of anotherside edge part 15 atperistome 3a, 3b place for example, the situation when using as the intermediate 311 of the absorbent commodity that convexshaped part 2a, 2b is configured in the skin surface side.In this case, preferably, the mode that becomes the surface patch side with the face that is formed with convex shaped part disposes this bondedfibre fabric.

The fibre density of aside edge part 14 atperistome 3a, 3b place is higher relatively, that is, and and the rigidity height.Thereby,, can prevent easily that alsoperistome 3a, 3b are by conquassation even on aside edge part 14, apply load.In addition, the fibre density of anotherside edge part 15 atperistome 3a, 3b place is relatively low,, can prevent the liquid holdup atperistome 3a, 3b periphery that is.

By the mode that becomes surface patch 310 sides with the face that is formed with convexshaped part 2a, 2b this bondedfibre fabric is configured as intermediate, can between surface patch 310 and intermediate 311, a plurality of spaces be set.And then, be provided withperistome 3a, 3b by intermediate 311, even drain at short notice under the situation of a large amount of liquid, the factor that hinders liquid to see through is few, can promptly move this liquid to absorber.And, can prevent that this liquid from returning surface patch and also expanding on a large scale.

And then, even once returned,,, be difficult to once more on a large scale attached on the skin so this liquid also is difficult to return surface patch because the contact rate of intermediate 311 and surface patch 310 is low through the liquid of intermediate 311 by absorbent body.

In addition, the central portion of convex shapedpart 2a, 2b is compared withslot part 1a, 1b, and it is many to contain the fiber that is orientated along thickness direction (TD), and the summit of convex shapedpart 2a, 2b contacts with surface patch 310, so the liquid that remains on the surface patch 310 is introduced to thickness direction (TD) easily.Thereby liquid is difficult to remain on the surface patch.

Like this, can obtain the polarization of surface patch and the low-residual of liquid, can prevent that liquid from adhering to for a long time on a large scale on skin.And then because in theside edge part 14 in convex shapedpart 2a, 2b, the containing ratio height of machine-direction oriented fiber of (LD) orientation along its length is so can will guide to length direction (LD) to the liquid that aside edge part 14 moves from surface patch 310.Thereby,, can improve the absorption efficiency of absorber even liquid also can prevent to bring out the leakage from absorbent commodity to width (WD) diffusion.

4-3. the outside lining material of absorbent commodity

Purposes as bondedfibre fabric of the present invention, as shown in figure 15, for example, can list with have concavo-convex and the fibre density of aside edge part 14 that has a plurality ofperistome 3a, 3b and the first connectingportion 4a andperistome 3a, 3b place at recess (slotpart 1a, 1b) than other the position high bondedfibre fabric of fibre density of anotherside edge part 15 atperistome 3a, 3b place for example, situation about using as the outside lining material 320 of absorbent commodity.In this case, preferably, the mode that becomes the outside of this absorbent commodity with the face that is formed with convexshaped part 2a, 2b disposes bondedfibre fabric.

Be configured owing to become the mode in the outside of absorbent commodity with the face that is formed with convexshaped part 2a, 2b in the outside lining material 320, so when using this absorbent commodity, sense of touch is good under situation about mainly touching with hand.In addition, byperistome 3a, the 3b amongslot part 1a, the 1b, aeration excellence.

5. various formation things

Under regard to various formation things and be described in detail.

5-1. about bondedfibre fabric

5-1-1. fiber assembly

Fiber assembly is to form the roughly fiber assembly of sheet, is in the state that the fiber that constitutes this fiber assembly has the free degree.In other words, be fiber assembly with fiber free degree each other.Here, the so-called fiber free degree each other refers to the degree that by the fluid that mainly is made of gas fiber is moved freely as the fiber web of fiber assembly.This fiber assembly, for example, can by with the blended fiber of a plurality of mixed with fibers with the formation of gushing out of the fibrolaminar mode of the thickness that forms regulation.In addition, for example, can by with a plurality of different fibers each several times lamination form the formation of gushing out of fibrolaminar mode.

As fiber assembly of the present invention, for example, can list the fiber web or heat bonding and the fiber heat bonding curing fiber web before each other that utilize combing method to form.In addition, can list the net or the heat bonding each other of hot sticky merging fiber that form by air bells laid method (air laid) and solidify fiber web before.In addition, can list the heat bonding curing fiber web before that utilizes the sticking method embossing of point.In addition, the fiber assembly before the heat bonding that can list the fiber assembly that utilizes before the spun-bond process spinning, embossing or embossing is solidified.In addition, can list needle point method fiber web that form, that partly interweave.In addition, can list the half crossed fiber net that utilizes jet net-spraying method to form.In addition, can list and utilize the fiber assembly of meltblown spinning, fiber heat bonding each other before solidifying.In addition, can list the solvent that utilizes that utilizes the solvent bonding method to form fiber is solidified fiber assembly before each other.

In addition, can list, preferably, what utilize that air (gas) fluid capacitance easily arranges fiber again is the fiber web that forms with the combing method that uses long fiber, and then, each other free degree height of fiber, only by the net before the heat bonding that forms that interweaves.In addition, utilizing after the described a plurality of air in back (gas) stream forms slot parts (concavo-convex) etc., in order to make its on-woven materialization with keeping its shape invariance, handle (heat treated) by utilizing predetermined heating device etc. to carry out heating furnace, the hot blast method that makes the thermoplastic fibre heat bonding that is included in the fiber assembly is preferred.

5-1-2. fiber

As the fiber that constitutes fiber assembly (for example, constitute thefiber 101 offiber web 100 shown in Figure 1), for example, the thermoplastic resins such as polyethylene terephthalate, nylon, polyamide that can list polypropylene, the modification of polyethylene with low-density polyethylene, highdensity polyethylene, straight chain shape, polypropylene, polyethylene terephthalate, modification constitute, and use each resin separately or with the fiber of each resin compounded.

Compound shape for example, can be enumerated the fusing point of the knockout composition core-sheath-type higher than sheath composition, the eccentric type of core sheath, the different arrange type arranged side by side of fusing point of left and right sides composition.In addition, also can be with abnormity or the three-dimensional crinkled fibres of hiding of crispaturaing or significantly crispaturaing such as hollow type, flat or Y type or C types, utilize that physical loads such as current or heat or embossing cut apart cut apart mixing such as fiber.

In addition, in order to form the three-dimensional shape of crispaturaing, the tangible crinkled fibre of regulation or hiding crinkled fibre can be cooperated.Here, the so-called three-dimensional shape of crispaturaing, be helical form, word shape, Ω shape etc., towards in-plane, partly fiber orientation is towards thickness direction on the fiber orientation main body.Thereby, because the buckling strength of fiber itself is to the thickness direction effect, so even apply external pressure, its volume also is not easy to collapse routed.And then wherein, if spiral helicine shape, then when external pressure is released, shape can reinstatement, so, even since excessive external pressure make volume by conquassation some, after externally pressure discharges, also return to original thickness easily.

The fiber of obviously crispaturaing is to crispatura by machinery to give shape or core sheath structure and be eccentric type, the general name of the fiber of crispaturaing in advance such as arrange side by side.The crinkled fibre of hiding can be found to crispatura by heating.

Crispatura for machinery, can be poor, the fiber of heat, the pressurization continuous linearity after to spinning controls by the peripheral speed of linear velocity, the number of crispaturaing of per unit length is many more, can improve the buckling strength under the external pressure more.For example, the number of crispaturaing in 10 to 35/inch scope, more preferably, in 15 to 30/inch scope.

For utilizing thermal contraction to give for the shape, owing to be made of the different plural resin of fusing point, because fusing point is poor, percent thermal shrinkage changes, thereby is the fiber that so-called three-dimensional is crispaturaed when heating.For the resin structure of fibre section, can list the eccentric type of core sheath structure, the different parallel type of fusing point of left and right sides composition.The percent thermal shrinkage of such fiber for example can be in 5 to 90% scope, more preferably in 10 to 80% scope.

The fiber that the assay method of percent thermal shrinkage is made mensuration for (1) is 100% 200gsm (g/m²) net, (2) make the sample that is cut into 250 * 250mm size, (3) this sample was placed 5 minutes in the heating furnace of 145 ℃ (418.15K), (4) measure the length dimension after shrinking, and (5) can calculate percent thermal shrinkage by the length dimension difference before and after the thermal contraction.

In that this bondedfibre fabric is used as under the situation of surface patch, for example, consider the sensation that enters or touch skin of liquid, preferably, fiber number is in 1.1 to 8.8dtex scope.

This bondedfibre fabric is being used as under the situation of surface patch, as the fiber that constitutes fiber assembly, for example, stay a small amount of menses on the skin or sweat etc., also can contain the hydrophilic fibre of cellulose families such as paper pulp, chemical pulp, artificial silk, acetate fibre, natural cotton for absorption of residual.But, because cellulosic fibre is not easy to discharge the liquid that was once absorbing, so, for example, as preferred form, being that the scope of 0.1 quality % to 5 quality % is sneaked into respect to integral body.

Under the situation of utilizing this bondedfibre fabric as surface patch, for example, consider the entering of liquid or return wetly, add in the hydrophobicity synthetic fiber that also can enumerate in front or coating hydrophilizing agent or hydrophober etc.In addition, also can carry out corona treatment or Cement Composite Treated by Plasma, give hydrophily.

In addition, in order to improve albefaction, for example, also can contain inorganic fillers such as titanium dioxide, barium sulfate, calcium carbonate.Under the situation of the composite fibre of core-sheath-type, can also can in sheath, also contain inorganic filler only in inorganic filler described in the core.

In addition, as previously described, utilize air flow to be to use long fiber, to utilize combing method to form fiber web easily to what fiber was arranged again, in order to utilize after a plurality of air flows form slot parts (concavo-convexization) etc., make it the on-woven materialization with keeping its shape invariance, preferably utilize heating furnace to handle the hot blast method that (heat treated) makes the thermoplastic fibre heat bonding.As the fiber that is suitable for this method, for fiber intersection point hot adhesion each other, preferably use the fiber of core sheath structure, parallel construction, more preferably, with the fiber formation of the mutual easy core sheath structure of hot adhesion reliably of sheath.Particularly, preferably, use core sheath composite fibre that constitutes by polyethylene terephthalate and polyethylene or the core sheath composite fibre that constitutes by polypropylene and polyethylene.These fibers can use separately or two or more fiber combinations is used.In addition, fibre length is 20 to 100mm, is preferably 35 especially to 65mm.

5-2. manufacturing installation about bondedfibre fabric

5-2-1. the main fluid that constitutes by gas

According to the fluid that mainly constitutes of the present invention by gas, for example, can list the gas of adjusting to normal temperature or set point of temperature, perhaps contain the atomic aerosol of solid or liquid at this gas.

As gas, for example, can be air, nitrogen etc.In addition, gas also can contain the steam of the liquid of steam etc.

So-called aerosol refers to the material that is dispersed with liquid or solid in gas, below, enumerate its example.For example, can list and be dispersed with: the ink of painted usefulness; Improve flexibility with softeners such as silicone; Prevent charged and the control hydrophily used of wettability or the activating agent of hydrophobicity; Inorganic fillers such as the titanium dioxide that the raising fluid energy is used, barium sulfate; In the energy that improves fluid, in heat treated, improve the powder adhesives such as polyethylene that concavo-convex shaping retentivity is used; Antihistaminics such as the bagodryl hydrochloride of antipruritic usefulness, thymol; Humectant; The material of bactericide etc.Here, solid also comprises gelatinous object.

Can suitably adjust mainly the temperature of the fluid that constitutes by gas.Can carry out suitable adjustment according to the shape of the character of the fiber that constitutes fiber assembly, the bondedfibre fabric that will make.

Here, for example, move rightly in order to make the fiber that constitutes fiber assembly, for the temperature of the fluid that mainly is made of gas, in order to increase the free degree of the fiber that constitutes fiber assembly, higher to a certain extent temperature is preferred.In addition, in fiber assembly, comprise under the situation of thermoplastic fibre, can adjust to the temperature that to soften this thermoplastic fibre by the temperature of the fluid that will be mainly constitutes by gas, make the softening or fusion of thermoplastic fibre in the zone that is configured in the injected fluid that mainly constitutes by gas etc., simultaneously, make it underhardening again.

Whereby, for example,, keep the shape of bondedfibre fabric by spraying the fluid that mainly constitutes by gas.In addition, for example, when moving fiber assembly, give the intensity of this fiber assembly degree that (bondedfibre fabric) do not scatter in the travel mechanism that utilizes regulation.

Flow for the fluid that mainly is made of gas can suitably be adjusted.The concrete example that has the fiber assembly of the free degree as fiber each other, for example, can list and utilize highdensity polyethylene to constitute sheath, utilize polyethylene terephthalate to constitute core, with fibre length 20 to 100mm, be preferably 35 to 65mm, fiber number 1.1 is to 8.8dtex, being preferably 2.2 to 5.6dtex core sheath fiber is main body, utilize combing method to open fibre then fibre length is 20 to 100mm if use, be preferably 35 to 65mm fiber, if utilize the air bells laid method to open fibre then fibre length is 1 to 50mm, be preferably 3 to 20mm fiber, adjust to 10 to 1000gsm, be preferably 15 to 100gsm fiber web 100.Condition as the fluid that mainly constitutes by gas, for example, (ejiction opening 913: diameter 0.1 is to 30mm can to list ejection portion 910 at Fig. 5 or a plurality of ejiction openings 913 of formation shown in Figure 6, be preferably 0.5 to 5mm, pitch: 0.5 to 30mm, be preferably 0.1 to 10mm, be shaped as just round, ellipse or rectangle) in, be 3 to 50[L/ (minute holes) with air quantity], be preferably 5 to 20[L/ (minute holes)] condition to fiber web 100 15 to 300 ℃ of injection temperations (288.15K to 573.15K), be preferably the situation of the hot blast of 100 to 200 ℃ (373.15K to 473.15K).For example, spraying with above-mentioned condition under the situation of the fluid that mainly is made of gas, the fiber assembly that the fiber that is constituted can change its position or direction is suitable a kind of in the fiber assembly among the present invention.By utilizing such fiber, creating conditions and make, for example, can form bondedfibre fabric shown in Figure 9.The size of slot part 1a, 1b or convex shaped part 2a, 2b or weight per unit area can obtain in following scope.For slot part 1, thickness 0.05 to 10mm, be preferably in 0.1 to 5mm the scope, width 0.1 to 30mm, be preferably in 0.5 to 5mm the scope, weight per unit area 2 to 900g/m², be preferably 10 to 90g/m²Scope in.For convex shaped part 2a, 2b, thickness 0.1 to 15mm, be preferably in 0.5 to 10mm the scope, width 0.5 to 30mm, be preferably in 1.0 to 10mm the scope, weight per unit area 5 to 1000g/m², be preferably in 10 to 100gsm the scope.In addition, in the scope of roughly above-mentioned numerical value, can make bondedfibre fabric, still, be not limited to this scope.

5-2-2. injection equipment

By can change mainly the direction of the fluid that constitutes by gas forinjection equipment 910, for example, can suitably adjust the interval of the recess (slot part) in formation concavo-convex or the height of convex shaped part etc.In addition, for example, constitute, for example, can suitably adjust, so that slot part etc. form crooked shape (wavy, word shape) or other shape by the direction ground that automatically changes above-mentioned fluid.In addition, by adjusting mainly the spray volume or the ejection time of the fluid that constitutes by gas, can suitably adjust the shape of slot part or peristome or form figure.Mainly the fluid that is made of gas can be vertical to the spray angle offiber web 100, in addition, also can be on the moving direction F offiber web 100 with the angle of regulation towards processing line direction as this moving direction F, also can with the angle of regulation towards with processing line side in the opposite direction.

5-2-3. heating arrangements

Method asfiber 101 bondings that make thebondedfibre fabric 116 that is formed with peristome, for example, can list the bonding of utilizing needle point method, jet net-spraying method, solvent bonding method to carry out, the hot adhesion that perhaps utilizes sticking method of point or hot blast method to carry out, but, for the fiber orientation that keeps adjusting, the density or the fiber weight per unit area of fiber, the perhaps shape of the slot part of formed regulation, peristome or teat, the hot blast method is preferred.And, for example, preferably utilize the heat treatment of the hot blast method of heater portion 95.

5-2-4. other

For thebondedfibre fabric 115 that utilizesheating part 950 heating and make, utilizeconveyer 930 to reachcontinuous conveyer 940 on the direction F of regulation, for example, move to the operation or the coiling process that bondedfibrefabric 115 are cut into theregulation shape.Conveyer 940 is the same withconveyer 930, also can be equipped withband portion 949,rotating part 941 etc.

Claims (18)

1. bondedfibre fabric comprises:

A plurality of peristomes along first direction formation;

From a side edge part of observing, being provided with the second direction of aforementioned first direction quadrature as a near zone the lateral margin of aforementioned peristome;

As with respect to an aforementioned side edge part near the lateral margin of the aforementioned peristome of aforementioned peristome another one zone and another side edge part of being provided;

Compare the fibre density height of an aforementioned side edge part with aforementioned another one side edge part.

2. bondedfibre fabric as claimed in claim 1 is characterized in that, an aforementioned side edge part is than the fiber weight per unit area height of aforementioned another one side edge part.

3. bondedfibre fabric as claimed in claim 1 or 2 is characterized in that, includes: the first adjacent peristome in the arrangement of aforementioned a plurality of peristomes and second peristome, first connecting portion that constitutes by the fiber between aforementioned first peristome and second peristome,

The fibre density of aforementioned first connecting portion is than the fibre density height of aforementioned another side edge part at the aforementioned first peristome place.

4. bondedfibre fabric as claimed in claim 3 is characterized in that, the aforementioned side edge part at the aforementioned second peristome place is higher than along the containing ratio of the fiber of aforementioned second direction orientation along the containing ratio of the fiber of aforementioned first direction orientation.

5. as claim 3 or 4 described bondedfibre fabrics, it is characterized in that,, be higher than along the containing ratio of the fiber of aforementioned first direction orientation along the containing ratio of the fiber of aforementioned second direction orientation at aforementioned first connecting portion.

6. as any one described bondedfibre fabric in the claim 3 to 5, it is characterized in that aforementioned first connecting portion is than the fiber weight per unit area height of aforementioned another side edge part at the aforementioned first peristome place.

7. as any one described bondedfibre fabric in the claim 3 to 6, it is characterized in that, comprise: in the arrangement of aforementioned a plurality of peristomes and the 3rd peristome aforementioned second peristome opposition side and the aforementioned first peristome adjacency and by fibroplastic second connecting portion between aforementioned first peristome and the 3rd peristome, aforementioned second connecting portion is than the fibre density height of aforementioned another side edge part at the aforementioned first peristome place.

8. bondedfibre fabric as claimed in claim 7 is characterized in that, an aforementioned side edge part at the aforementioned second peristome place and an aforementioned side edge part at the aforementioned first peristome place are positioned at opposition side mutually on aforementioned second direction,

An aforementioned side edge part at aforementioned the 3rd peristome place and an aforementioned side edge part at the aforementioned first peristome place are positioned at opposition side mutually on aforementioned second direction,

Aforementioned side edge part as an aforementioned side edge part, aforementioned first connecting portion, an aforementioned side edge part at the aforementioned first peristome place, aforementioned second connecting portion and aforementioned the 3rd peristome place at the aforementioned second peristome place in the zone higher than aforementioned another side edge part fibre density is continuous agley.

9. as claim 7 or 8 described bondedfibre fabrics, it is characterized in that the fibre density of aforementioned first connecting portion is at 0.05g/cm³More than, for the fibre density of aforementioned another side edge part at least one the peristome place in aforementioned first peristome, aforementioned second peristome, more than 1.1 times,

The fibre density of aforementioned second connecting portion is 0.05g/cm³More than, for the fibre density of aforementioned another side edge part at least one the peristome place in aforementioned first peristome, aforementioned second peristome, more than 1.1 times.

10. as any one described bondedfibre fabric in the claim 7 to 9, it is characterized in that, the aforementioned side edge part at aforementioned the 3rd peristome place, along the containing ratio of the fiber of aforementioned first direction orientation than containing ratio height along the fiber of aforementioned second direction orientation.

11. as any one described bondedfibre fabric in the claim 7 to 10, it is characterized in that, at aforementioned second connecting portion, along the containing ratio of the fiber of aforementioned second direction orientation than containing ratio height along the fiber of aforementioned first direction orientation.

12., it is characterized in that the fiber weight per unit area of aforementioned second connecting portion is than the fiber weight per unit area height of aforementioned another side edge part at the aforementioned first peristome place as any one described bondedfibre fabric in the claim 7 to 11.

13. as any one described bondedfibre fabric in the claim 7 to 12, it is characterized in that, the fiber weight per unit area of an aforementioned side edge part at the fiber weight per unit area of an aforementioned side edge part at the aforementioned first peristome place, the aforementioned second peristome place, and the fiber weight per unit area of the aforementioned side edge part at aforementioned the 3rd peristome place be 15～250g/m², respectively with respect to the fiber weight per unit area of aforementioned another side edge part at the fiber weight per unit area of aforementioned another side edge part at the fiber weight per unit area of aforementioned another side edge part at the aforementioned first peristome place, the aforementioned second peristome place and aforementioned the 3rd peristome place more than 1.1 times.

14. as any one described bondedfibre fabric in the claim 1 to 13, it is characterized in that, comprising:

The a plurality of slot parts that are formed extended at both sides along aforementioned first direction in a face side of aforementioned bondedfibre fabric,

An aforementioned face side respectively with a plurality of convex shaped parts that are formed extended at both sides along aforementioned first direction of aforementioned a plurality of slot part adjacency,

Aforementioned a plurality of peristome is respectively along each formation of aforementioned a plurality of slot parts.

15., it is characterized in that each of aforementioned a plurality of peristomes is circular or substantially elliptical as any one described bondedfibre fabric in the claim 1 to 14.

16. bondedfibre fabric, include the variable density zone that the density that makes fiber changes continuously or intermittently, aforementioned variable density zone comprises a plurality of high-density regions, and described a plurality of high-density regions extend along the first direction of the regulation identical with streamline direction in the machinery when aforementioned bondedfibre fabric is made.

17. bondedfibre fabric as claimed in claim 16 is characterized in that, aforementioned high-density region comprise a plurality of when observing perpendicular to the second party of aforementioned first direction, the high-density region of コ font that the fibre density of a side is low.

18., it is characterized in that aforementioned high-density region comprises the crooked high-density region that is the bending extension along aforementioned first direction as claim 16 or 17 described bondedfibre fabrics.

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