CN102844485A - Device for solidifying a material web - Google Patents

Abstract

Translated fromChinese

本发明涉及一种用于固化由纤维和/或长丝形成的材料幅（F）的装置，所述装置包括：筛带（S），用于运载材料幅（F）；喷嘴束（D），布置在筛带（S）上方，以用于使材料幅（F）以至少一行布置的具有多个流体射流（W）的加压流体；以及抽吸装置，布置在筛带（S）下方，与喷嘴束（D）相互作用且具有抽吸间隙（A）。本发明的特征在于，流体射流（W）在抽吸间隙（A）的表面区域中击打材料幅（F）。根据本发明，当在材料幅（F）的传送方向看时，在抽吸间隙（A）的后部中进行流体应用（W）。

The invention relates to a device for solidifying a material web (F) formed of fibers and/or filaments, said device comprising: a screen belt (S) for carrying the material web (F); a bundle of nozzles (D) , arranged above the sieve belt (S), for a pressurized fluid with a plurality of fluid jets (W) for the material web (F) arranged in at least one row; and a suction device, arranged below the sieve belt (S) , interacting with the nozzle bundle (D) and having a suction gap (A). The invention is characterized in that the fluid jet (W) strikes the material web (F) in the surface region of the suction gap (A). According to the invention, the fluid application (W) takes place in the rear of the suction gap (A) when seen in the transport direction of the material web (F).

Description

The device that is used for the curing materials width of cloth

The present invention relates to the described device that is used for the curing materials width of cloth (web) of a kind of preorder characteristic according to claim 1.

From the known a kind of device that is used to solidify the fiber of the nature of any kind and/or the web (web) that synthetic fiber are processed of EP-A-0 959 076, wherein, web of fiber is with-the cartridge type compression.Said device comprises following characteristic and designs by the mode of following general introduction separately:

-the first endless belt is used to deliver web of fiber, between at least two rollers, is directed to and deflection with the mode of tensioning,

-transmissibility acupuncture cylinder, said endless belt are wrapped in around this transmissibility acupuncture cylinder,

-the second endless belt; It distributes to first endless belt; And also the mode with tensioning is directed between two rollers; Wherein circulate on the direction identical with driven mode with first endless belt with the work thigh of second endless belt of work thigh (working strand) positioned opposite of said first endless belt

-at the entrance side place; Two work thighs of two endless belts are directed toward each other with taper shape in their longitudinal extent; This mode makes the web of fiber (preshearing hair (pre-fleece), fine hair) on the work thigh be positioned at first endless belt will be between the endless belt of advancing (be compressed by compression little by little; Compacted)

-two endless belts are pressed against the acupuncture cylinder through two rollers, thereby available stronger power is wrapped in around this cylinder,

-between said two rollers, spray nozzle towards the web of fiber orientation with moistening this web of fiber.

The advantage of this type of device is; Between two endless belts; Non-woven before (being the fibre sheet that big volume ground advances) will be with the mode of slow increase and the compression and do not have shear stress towards the bottom from the top with uniform pressure, and only when being securely held between two endless belts on the acupuncture cylinder by moistening.Yet should construct higher than complicacy and cost for some product.

From the known a kind of device of EP 1 126 064 B1, it has simplified the first moistening of compression and non-woven.This known devices provides a kind of band-belt compression, and this device comprises that following characteristic also designs by the mode of following general introduction separately:

-the first endless belt is used to deliver web of fiber, and the mode with tensioning between two rollers is directed to and deflection,

-the second endless belt, it also is directed between at least two rollers with the mode of tensioning, wherein circulates in the direction identical with driven mode with first endless belt with the work thigh of said second endless belt of the work thigh positioned opposite of said first endless belt,

-at the entrance side place, two work thighs of two endless belts are directed toward each other with taper shape in their longitudinal extent, and this mode makes that the web of fiber on the work thigh of first endless belt will little by little be compressed between the endless belt of advancing,

-in the zone of not supporting, be arranged for two endless belts that moistening web of fiber and first spray nozzle that have aspirator is assigned to mutual circulation by deflection roll.

Because its technology spending, this structure cost for some product is also higher.

DE 10 2,005 055 939 B3 illustrate a kind of spray nozzle that is used to produce the fluid jet that is used for the cured fiber width of cloth.This spray nozzle comprises removable spray nozzle, and it comprises the outlet of fluid.This outlet can be arranged to delegation, but two row or the multirows that also can be arranged to be parallel to each other and extend.Outlet has distance each other and has the diameter that makes applicable to the reality use.As fluid, can use the water of pressurization, but also can be overheated steam generally.

The object of the present invention is to provide a kind of simple device to handle with the compression and first of the fine hair (pile) that is used for fiber and/or long filament and forms.

Above purpose realizes through the device characteristic that limits in the claim.Favourable being modified in shown in the dependent claims of the present invention.

The present invention starts from a kind of device that is used to solidify the web that is formed by fiber and/or long filament, and said device comprises: sieve band, delivery web; Spray nozzle is arranged in sieve band top, to be used to make the pressure fluid of a plurality of fluid jet forms that web stands to arrange with delegation at least; And aspirator, comprising the suction gap, aspirator is arranged in sieve band below and interacts with spray nozzle, and wherein fluid jet impacts web in the surf zone in suction gap.

According to the present invention, it is arranged so that the Background Region in the suction gap carries out the fluid application when the direction of transfer of web is seen.Before fluid is used, web (being fiber and/or long filament fine hair) without undergoing any mechanical compress, compress or lead.The suction channel zone of the amplification through fluid Shu Qianfang, fiber and/or long filament fine hair will be by stable, and according to the suction of process also will compress a little.In addition, the present invention's fiber that can prevent to move at the fluid application direction and/or long filament are by the fluid jet distortion or prevent to form in its surface folding.With this kind mode, can avoid interference to the quality of non-woven.

In the mode of modification, following scheme is provided:

-in 1/4th zones, rear portion (Viertel) in suction gap, carry out fluid to use.

-above web, for aspirator distributes a blowning installation to be used for blow air on the surface of web by the delivery of sieve band.Thereby the compression, stablizing effect of air-flow of flowing through the fine hair of web strengthens.

-aspirator forms a chamber, and this chamber is connected in the suction air generator, and delimit through the respective rods that is made of plastics on the direction of transfer of web said chamber.

-said blowing device is provided with the air transmitted element.

The said air transmitted element of-said blowing device is adjustable.Therefore, the effect that strengthens the blow air of compression can be adjusted according to situation at that time.

-through this blowing device, the fine hair of web can stand the blow flow of varying strength in the direction that transmits.This makes and can directly in the suction gap, blow the air-flow with predetermined strength and direction.Different second air-flow of intensity and/or direction will in the zone in suction the place ahead, gap, be applied to web and air-flow will be when aspirating the web above the gap stabilizing material width of cloth.

The sieve band of-delivery web extends with linear tensioning state, the suction gap be arranged in that sieve is with under.

-will deliver sieve band guiding around acupuncture cylinder of web with transmissibility surface, this suction gap cooperates with the bottom side on said transmissibility surface in the inside of acupuncture cylinder.

Below will be with reference to the description of drawings embodiments of the invention.

Endless belt conveyer S forms the sieve band and centers on the deflection roll (not shown) with the linear mode tensioning; Conveyor belt carrying comprises the web F of fiber and/or long filament; Said web is set to be in the malcompression fine hair of most of its uncured state through combing or spunbond plant, and is being transmitted by the direction shown in the arrow.Have above the conveyer belt S of web F, be furnished with spray nozzle D across the width of web F, the bottom side of said spray nozzle is provided with a plurality of outlets of pressure fluid.In the illustrated embodiment, this fluid is the water that highly pressurizes, and accordingly, the fine hair of web F stands a plurality of water jet W.The a plurality of outlets that are used for the alinement of water jet W are arranged to removable nozzle tape (not shown).Also can use the nozzle tape that comprises a plurality of outlets of arranging with row spaced apart from each other.

Conveyer belt S arranged beneath at delivery web F has aspirator A, and aspirator is connected to separator AS through conduit system, and separator has the suction ventilation SV that is arranged in its downstream.In said separator AS, water will separate from the mixture of water and air, and water will remove and be supplied to the unit for treating water (not shown) by the suction pump that is arranged in the separator downstream.

Said aspirator A is a Room, and this chamber is delimited by two plastic bar L1 and L2 across the width extension of conveyer belt S and at the direction of transfer of web F.On the form edge of web F, the suction gap that is formed by said bar L1, L2 is closed.In the drawings, only be to provide the bar L1 of spray nozzle D, visual representing form and the especially size relationship between the assembly of L2 with schematic mode.

According to Fig. 1, the width in the suction gap that is formed by bar L1, L2 is b.When the direction of transfer of web F is seen; Spray nozzle D arranged offset on the direction of the Background Region in suction gap with the water jet W that discharges from its bottom side, this mode make water jet W get into respectively in centre but near the back bar L2 ground that aspirates the gap to aspirate gap and web F.In the drawings, the inlet of water jet W is c with the range mark of back bar L2, and and preceding bar L1 between range mark be a.According to the present invention, c is chosen as satisfies c < a, wherein b=a+c.

Because water jet is with respect to the asymmetric orientation in suction gap (bar L1, L2), web F forwardly the zone (with bar L1 apart from a) than passing through more by force what Background Region (with the distance b of bar L2) stood to aspirate.The stronger suction force through web F has stabilization to fine hair in the zone (a) forwardly, and fine hair overcomes that water jet W moves and thereby stands the compression stress opposite with direction of transfer.

Pass fine hair suction more by force through working before the water jet W, to avoid the bulging of fine hair before first of water jet W solidifies.The bulging of fine hair can produce irregular portion in product, cause bad outward appearance, for example is presented on excessive form of some position density or agglomerating form, and on the other hand non-woven intensity is had adverse influence.And bulging can reach such degree,, makes fine hair contact nozzle bundle D and being damaged that is.This will cause interference and interruption in the production process.

Not shown an alternative embodiment of the invention wherein when the direction of transfer of web F is seen, was furnished with blowing device before spray nozzle D, to be used for the surface of airflow blow to the web in the zone in suction gap.

In practical examples, web F to be solidified is that the spunbond non-woven of the polypropylene (PP) of 1.8den is formed by Yarn count.According to the present invention, nonwoven fabric only rolls processing a little after laying, and handles through waterpower subsequently.Hydraulic pressure among the first nozzle D is 80bar, and aspirator stands the low pressure of 120mbar.The width b in suction gap is 12mm, and between water jet W and the preceding bar L1 that aspirates the gap is 10mm apart from a.Such measures can make through using obviously lower pressure to carry out the first waterpower acupuncture, and need not to compress, thereby further reduced the bulging risk of fine hair.With the central oriented phase ratio of water jet with respect to the suction gap, can the final non-woven more uniformly that produces obviously of glitch-free mode.

List of reference numbers:

S sieve band, conveyer belt

F web, fine hair

A aspirator, suction gap

L1 bar, preceding bar

L2 bar, back bar

The AS separator

SV suction ventilation, suction air generator

The SP suction pump

The D spray nozzle

The application of W water jet, fluid

The width in b suction gap

The distance of a water jet and preceding bar L1

The distance of c water jet and back bar L2

Claims (7)

Translated fromChinese

1.一种用于固化由纤维和/或长丝形成的材料幅的装置，所述装置包括：筛带，用于运载所述材料幅；喷嘴束，布置在所述筛带上方，以用于使所述材料幅经受以至少一行布置的多个流体射流形式的加压流体；以及抽吸装置，包括抽吸间隙，所述抽吸装置布置在所述筛带下方且与所述喷嘴束相互作用，所述流体射流在所述抽吸间隙的表面区域中击打所述材料幅，1. An apparatus for solidifying a material web formed of fibers and/or filaments, said apparatus comprising: a screen belt for carrying said material web; nozzle bundles arranged above said screen belt for use in for subjecting the material web to pressurized fluid in the form of a plurality of fluid jets arranged in at least one row; and suction means, comprising a suction gap, arranged below the screen belt and in contact with the nozzle bundle interaction, the fluid jet hits the material web in the surface area of the suction gap,其特征在于，当在所述材料幅（F）的运载方向看时，在所述抽吸间隙（A）的后部区域中执行所述流体的应用（W）。It is characterized in that the application (W) of the fluid is performed in the rear region of the suction gap (A) when seen in the carrying direction of the material web (F).2.根据权利要求1所述的装置，其特征在于，在所述抽吸间隙（A）的后部四分之一区域中执行所述流体的应用（W）。2. Device according to claim 1, characterized in that the application (W) of the fluid is performed in the rear quarter region of the suction gap (A).3.根据权利要求1或2所述的装置，其特征在于，所述抽吸装置（A）形成为顶侧开口的室，所述室连接于抽吸空气发生器（SV），所述室的顶侧由所述筛带（S）覆盖并且所述室在所述材料幅（F）的传送方向上由相应的杆（L1、L2）定界。3. Device according to claim 1 or 2, characterized in that the suction device (A) is formed as a chamber open on the top side, which chamber is connected to a suction air generator (SV), the chamber The top side of the sieve belt (S) is covered by the sieve belt (S) and the chamber is delimited by the corresponding bars (L1, L2) in the conveying direction of the material web (F).4.根据前述权利要求任一项所述的装置，其特征在于，在由所述筛带S）运载的所述材料幅（F）上方，为所述抽吸装置分配吹风装置以用于向所述材料幅（F）的表面上吹送空气。4. Device according to any one of the preceding claims, characterized in that above the material web (F) carried by the screen belt S) blowing means are assigned to the suction means for blowing Air is blown on the surface of the material web (F).5.根据权利要求4所述的装置，其特征在于，所述吹风装置设置有空气传导元件。5. Device according to claim 4, characterized in that the blowing device is provided with an air conducting element.6.根据权利要求5所述的装置，其特征在于，所述吹风装置的所述空气传导元件是可调节的。6. Device according to claim 5, characterized in that the air conducting element of the blowing device is adjustable.7.根据权利要求4所述的装置，其特征在于，通过所述吹风装置，所述材料幅的绒毛在传送方向上能够经受不同强度的吹送空气。7. Device according to claim 4, characterized in that, by means of the blowing device, the fluff of the material web can be subjected to blowing air of different intensities in the conveying direction.

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