US20220258939A1 - Film-packaged tissue assembly package - Google Patents

Abstract

To provide a film-packaged tissue assembly package that does not reduce fullness of tissue paper contained, has excellent shape retention, and includes a packaging bag that is not easily broken.

The problem is solved by a film-packaged tissue assembly package in which a plurality of film-packaged tissues is arranged and packaged in a gusset packaging bag having a grip portion on a top surface side, in which each of the film-packaged tissues is overlap-packaged and has end surfaces formed of sealed portions of tube openings at both ends in a longitudinal direction, and the overlap-packaged film-packaged tissues are packaged such that each end surface faces the top surface side having the grip portion and a bottom surface side facing the top surface side, and the longitudinal direction is along a top-bottom direction.

Description

TECHNICAL FIELD
• The present invention relates to a film-packaged tissue assembly package in which a plurality of film-packaged tissues in each of which a bundle of tissue paper obtained by folding and stacking tissue paper is packaged with a flexible packaging film is collectively gusset-packaged.
BACKGROUND ART
• A tissue paper package (hereinafter, also referred to as a box product) also called a box tissue in which a bundle of tissue paper is contained in a paper storage box called a carton box is well known.
• Abox product101B is excellent in shape stability of a paper storage box which is an outer shell. Therefore, as illustrated inFIG. 12, in general, five or threebox products101B are arranged so as to be stacked in a top-bottom direction, and formed into a product shapedbody110B of assembly packaging (also referred to as pack packaging) collected by anexterior film111. A large number of productshaped bodies110B are often stacked and sold at a storefront of a distributor or the like.
• Meanwhile, a tissue paper package also called a film-packaged tissue is known in which a bundle of tissue paper is package with a flexible resin packaging film. As the film-packaged tissue, a portable one called a pocket tissue is well known. However, there is also a non-portable film-packaged tissue used in a stationary manner like a box product or used for a refill of a bundle of the box product.
• The film-packaged tissue used in a stationary manner or the like, like the box product, has advantages in terms of reduction of packaging materials, transportation cost due to compactness, and portability as compared with the box product. However, in this type of film-packaged tissue, a bundle of flexible tissue paper is packaged with a flexible packaging film. Therefore, the film-packaged tissue has a problem that shape retention is inferior to that of the box product, and shape retention suitable for storefront stacking cannot be obtained only by simply stacking a plurality of film-packaged tissues and forming the film-packaged tissues into assembly packaging with a film as in the case of the box product.
• In view of such a problem, in a technique disclosed in the followingPatent Literature 1, by forming a suction and exhaust hole in a film-packaged tissue to make the film-packaged tissue compressible, and forming the film-packaged tissue into assembly packaging in a gusset packaging manner such that the film-packaged tissue is restrained by an assembly packaging film in a compressed state, shape retention is enhanced like the box product as a whole, and the film-packaged tissue is suitable for storefront stacking.
CITATION LISTPatent Literature
• Patent Literature 1: JP 2018-058654 A
SUMMARY OF INVENTIONTechnical Problem
• However, when such a compressed state continues for a long period of time, fullness of tissue paper is likely to be reduced. In particular, in tissue paper having a high moisture content such as moisturizing tissue containing a liquid chemical or in a high humidity environment, fullness of the tissue paper is more likely to be reduced.
• On the other hand, for assembly packaging of a film-packaged tissue, gusset packaging suitable for a flexible packaging object such as a toilet roll is preferable. In addition, a film-packaged tissue assembly package mainly used in a stationary manner, which is different from a portable one, usually has a size not to be contained in a bag, and has a certain degree of weight. Therefore, gusset packaging with a grip portion is preferable.
• However, this gusset packaging easily forms spaces particularly on a top surface side and a bottom surface side due to a structure thereof. Therefore, when compressibility of the film-packaged tissue is lowered to simply lower restraint performance, the contained film-packaged tissue easily moves. In the film-packaged tissue, a sealed portion formed by thermal fusion or the like of a packaging film is hard. Therefore, when the contained film-packaged tissue easily moves, the hard portion and an exterior film constituting the gusset packaging are rubbed against each other, and a risk of breakage increases.
• Therefore, a main object of the present invention is to provide a film-packaged tissue assembly package, for example, mainly used in a stationary manner like a box product, the film-packaged tissue assembly package being hardly reduced in fullness of contained tissue paper, being excellent in shape retention, for example, to be easily stacked and sold at a storefront, and being hardly damaged in an assembly packaging film. Furthermore, there is also provided a film-packaged tissue assembly package which is excellent in an opening property and portability of the assembly package while being excellent in a take-out property of a contained film-packaged tissue.
Solution to Problem
• Means for solving the above problems are as follows. A first means is
• a film-packaged tissue assembly package including a gusset packaging bag having a grip portion on a top surface side and a plurality of film-packaged tissues arranged and packaged in the gusset packaging bag, wherein
• each of the film-packaged tissues is overlap-packaged and has end surfaces formed by of sealed portions of tube openings at both ends in a longitudinal direction, and
• the overlap-packaged film-packaged tissues are gusset-packaged such that each end surface faces the top surface side having the grip portion and a bottom surface side facing the top surface side, and the longitudinal direction is along a top-bottom direction.
• A second means is
• the film-packaged tissue assembly package according to the first means, wherein
• the film-packaged tissue paper is obtained by overlap-packaging a bundle of tissue paper having a substantially rectangular parallelepiped shape in which a plurality of sheets of tissue paper is folded and stacked, and has a take-out port forming portion of the tissue paper on an upper surface, and the end surface formed of sealed portions of tube openings is located facing a short side surface of the bundle.
• A third means is
• the film-packaged tissue assembly package according to the first or second means, wherein
• packaging is performed such that the plurality of film-packaged tissues is arranged in a substantially rectangular parallelepiped shape such that the end surfaces are substantially flush with each other and long side surfaces are substantially flush with each other, and gusset portions of the gusset packaging bag face upper or lower surface of the film-packaged tissues.
• A fourth means is
• the film-packaged tissue assembly package according to the third means, wherein
• two or less stages of the film-packaged tissues are arranged in the gusset packaging bag in the top-bottom direction such that the end surfaces butt against each other.
• A fifth means is
• the film-packaged tissue assembly package according to the third or fourth means, wherein
• the film-packaged tissue assembly arranged in the gusset packaging bag has a compression ratio of 80% or more in a direction orthogonal to the top-bottom direction.
• A sixth means is
• the film-packaged tissue assembly package according to any one of the first to fifth means, wherein
• the film-packaged tissues each have a bundle filling ratio of 100% or more.
Advantageous Effects of Invention
• The present invention described above provides a film-packaged tissue assembly package which is hardly reduced in fullness of contained tissue paper, is excellent in shape retention, for example, to be easily stacked and sold at a storefront, and is hardly damaged in an assembly packaging film. Furthermore, the present invention also provides a film-packaged tissue assembly package which is excellent in an opening property and portability of assembly packaging while being excellent in a pop-up property of a contained film-packaged tissue.
BRIEF DESCRIPTION OF DRAWINGS
• FIG. 1 is a perspective view of a film-packaged tissue assembly package according to the present invention.
• FIG. 2 is a perspective view of another film-packaged tissue assembly package according to the present invention.
• FIG. 3 is a perspective view for explaining a film-packaged tissue according to the present invention.
• FIG. 4 is a perspective view for explaining another film-packaged tissue according to the present invention.
• FIG. 5 is a top view for explaining a take-out port of the film-packaged tissue according to the present invention.
• FIG. 6 is a perspective view for explaining a packaging structure of the film-packaged tissue according to the present invention.
• FIG. 7 is a perspective view for explaining a tissue paper bundle according to the present invention.
• FIG. 8 is a perspective view illustrating a time when the film-packaged tissue assembly package according to the present invention is opened.
• FIG. 9 is a diagram for explaining a gusset packaging bag according to the present invention.
• FIG. 10 is a perspective view for explaining a structure of gusset packaging according to the film-packaged tissue assembly package according to the present invention.
• FIG. 11 is a diagram for explaining a comparative embodiment of the film-packaged tissue assembly package.
• FIG. 12 is a diagram for explaining an example of assembly packaging of a tissue paper package of a conventional box product.
DESCRIPTION OF EMBODIMENTS
• Hereinafter, the present invention will be described with reference toFIGS. 1 to 10 illustrating an embodiment of the present invention andFIG. 11 illustrating a comparative embodiment.
• In a film-packaged tissue assembly package10 (hereinafter, also referred to as an assembly package) according to the present invention, a plurality of film-packagedtissues1 in which abundle3 obtained by folding and stacking a plurality of sets oftissue paper2 is packaged with aflexible packaging film4 is arranged and gusset-packaged so as to be contained in agusset packaging bag13 having agrip portion45 on a top surface side.
• The film-packagedtissue1 according to the present invention is obtained by overlap-packaging thebundle3. The overlap packaging is a packaging mode also referred to as caramel packaging or combined packaging, and as illustrated inFIGS. 3 to 5, is a packaging mode in which thebundle3, which is a packaging object, is packaged with thepackaging film4 so as to be wrapped in a tubular shape such thatopenings4Z are formed at both ends in a longitudinal direction,portions4X overlapping in the wrapping direction are bonded by a fusion treatment or an adhesive, aportion4Y extending beyond thebundle3 is folded toward an end surface side of thebundle3 from the vicinity of two opposing edges of a bundle end surface, at least tip edges of substantially triangular or substantially trapezoidal pieces formed at this time are overlapped and bonded by a fusion treatment or an adhesive to seal atube opening4Z, thus forming anend surface4A.
• In this overlap packaging, since theend surface4A has a substantially planar shape, an exterior of thepackaging film4 has a substantially rectangular parallelepiped shape close to a box. In addition, theend surface4A is formed by stacking and bonding a plurality of layers of thepackaging film4, and therefore has high rigidity, is hardly crushed, and easily maintains a substantially rectangular parallelepiped shape.
• Therefore, when the film-packagedtissue1 is overlap-packaged, a product shape thereof is a substantially rectangular parallelepipedon. Therefore, even when the film-packagedtissues1 are arranged and formed into assembly packaging as illustrated inFIGS. 1 and 2, the film-packagedtissues1 can have a rectangular parallelepiped shape as a whole. For this reason, the assembly packages are easily stacked in a plurality of stages in line, and easily stacked and sold at a storefront. In addition, even when the assembly packages are stacked in such a manner, the exterior of thepackaging film4 has high rigidity. Therefore, a compressive force is hardly applied to theinner bundle3, and fullness of thetissue paper2 is hardly reduced.
• It is desirable that thebundle3 of tissue paper contained in the film-packagedtissue1 is a pop-up type. Particularly as illustrated inFIG. 7, the pop-uptype bundle3 is obtained by folding a sheet of thetissue paper2 having a substantially rectangular shape of about 197±10 mm in length×217±10 mm in width in half, and stacking a plurality of sheets of thetissue paper2 such that foldedpieces2B of other sheets of thetissue paper2 located above and below the folded sheet are located in aninner side2A of the folded sheet. When one folded piece of an uppermost sheet is lifted upward, a foldedpiece2B of another sheet adjacent to the lifted sheet immediately below the lifted sheet is dragged upward and lifted. Such abundle3 can be manufactured by a known multi-stand type or rotary type interfolder. Note that thebundle3 according to the present invention may be a non-pop-up type having a substantially rectangular parallelepiped shape in which a plurality of sets of the foldedtissue paper2 is stacked.
• The pop-uptype bundle3 has a substantially rectangular parallelepiped shape having a pair oflongitudinal side surfaces3B in which folded edges2C of sheets of thetissue paper2 are lined up, a pair of short side surfaces3A in which the foldededges2C are not lined up, and a pair of flat surfaces (upper and lower surfaces)3C connected to theshort side surfaces3A and thelongitudinal side surfaces3B. In addition, the pop-uptype bundle3 is constituted by thesoft tissue paper2, and therefore has flexibility and is easily compressed and deformed.
• The number of sets of thetissue paper2 constituting thebundle3 is not limited, but is generally 120 to 240 as one set of 2 plies (two sheets stacked) or 3 plies (three sheets stacked). The size of thebundle3 is not necessarily limited, but a bundle of 150 sets of 2-ply tissue paper has a height of about 40 to 50 mm×160 to 200 mm in a longitudinal direction (width)×90 to 110 mm in a short direction (depth). Note that as illustrated in this shape, the film-packagedtissue1 according to the present invention is not a portable tissue called a pocket tissue or the like having about 10 to 12 sets of contained tissue paper and a height of about 10 mm.
• In the film-packagedtissue1 in the illustrated mode, theend surface4A sealing the barrel opening4Z is located at a position facing theshort side surface3A of thebundle3, and anopening perforation5 is formed at a position facing theuppermost tissue paper2 of thebundle3 of thepackaging film4. In particular, the film-packagedtissue paper1 in the illustrated mode is obtained by overlap-packaging the pop-uptype bundle3 oftissue paper2 having a substantially rectangular parallelepiped shape obtained by folding a sheet of thetissue paper2 in half, and stacking a plurality of sheets of thetissue paper2 such that the foldedpieces2B of other sheets of thetissue paper2 located above and below the folded sheet are located in theinner side2A of the folded sheet. The illustrated film-packagedtissue paper1 has a take-outport forming portion5 of tissue paper on an upper surface, and has theend surface4A which is a sealing portion of thebarrel opening4X facing theshort side surface3A where the foldededges2C of thebundle3 are not lined up.
• In thebundle3 of a pop-up type as in the illustrated mode, when an uppermost sheet of thetissue paper2 of thebundle3 is pulled out from an opening port formed in the upper surface, a part of a next sheet of the tissue paper located immediately below the pulled-out sheet is exposed from the opening port. In addition, in the film-packagedtissue1 configured in this manner, tissue paper is stacked in a direction in which theend surface4A having high rigidity stands, and therefore thebundle3 is hardly compressed, and fullness is hardly reduced even if a compressive force from a bundle stacking direction (up-down direction) is applied.
• Note that in the film-packagedtissue1, in order to prevent bursting or the like when an external pressure is applied, a suction and exhaust hole communicating with the inside and the outside may be formed. On theend surface4A facing theshort side surface3A where the foldededges2C of thebundle3 of thepackaging film4 are not lined up, the suction and exhaust hole may be formed, but it is desirable that there is no suction and exhaust hole at this position. When the suction and exhaust hole is formed on theend surface4A, fragility of theend surface4A increases. Therefore, the advantage of the overlap packaging having theend surface4A having high rigidity is deteriorated.
• As illustrated inFIG. 3, the take-outport forming portion5 may be thelinear opening perforation5 extending in a longitudinal direction at the central portion in the short direction. However, as illustrated inFIG. 4, an elongated annular perforation may be formed in the longitudinal direction to form an elongated opening. Although not illustrated, theopening perforation5 may be covered with a peelable sealing material.
• In particular, as a preferable shape of the take-outport forming portion5, as illustrated inFIG. 5, it is desirable that a shape having aslit portion51 extending in the longitudinal direction and anopening50 communicating with an end of theslit portion51 and having a wideningportion52 gradually widening as a distance from theslit portion51 increases in the longitudinal direction is formed at the central portion in the short direction. Furthermore, it is desirable that theopening50 has a shape having acurved portion53 continuous with the wideningportion52 and protruding toward an end in the longitudinal direction. In this case, a length L3 of a portion where the take-outport forming portion5 is present is shorter than a longitudinal length L4 of thebundle3 and is preferably about 60 to 80% of the longitudinal length L4 of thebundle3.
• The width (length in the short direction) of theslit51 is 10 mm or less, and preferably 7 mm or less in the short direction. As illustrated inFIG. 5(B), there may be substantially no width formed by opening the linear perforation.
• In a case of a take-out port formed in such a shape of the take-outport forming portion5, anedge vicinity51A of theslit portion51 is a free edge piece that is easily moved in an up-down direction. Therefore, when a set of tissue paper is pulled out from a bundle, the edge piece is deformed in a direction in which the set of tissue paper is pulled out, and supports a next exposed set of tissue paper by leaning against the next exposed set of tissue paper. In addition, a next sheet of tissue paper partially exposed from the take-out port following the tissue paper pulled out from the bundle is easily deformed into a shape having a high standing property because an edge portion thereof in the longitudinal direction is wound along an edge of the curved portion. In the opening perforation illustrated in the figure, falling of tissue paper into an internal space, which easily occurs in overlap packaging in which an exterior has a rectangular parallelepiped shape, hardly occurs.
• Note that a cut tie ratio of the perforation forming the take-outport forming portion5 can be appropriately determined depending on ease of breakage of a film to be used, but as a preferred example, a cut portion has a length of 0.8 mm or more and 5.0 mm or less, and a tie portion has a length of 0.3 mm or more and 5.0 mm or less. In addition, the take-outport forming portion5 illustrated inFIG. 5 is preferably formed by forming a slit portion and a widening portion by perforations, and forming a curved portion by slit cutting in which an uncut portion is provided in a part (in the example illustrated, an end in the longitudinal direction) without forming the entire take-outport forming portion5 by perforations. The take-out port is easily opened from the curved portion.
• Specific examples of the flexibleresin packaging film4 constituting an exterior of the film-packagedtissue1 include: a single-layer film of a polyethylene film, a polypropylene film, a polyester film, a polyethylene terephthalate film, a nylon film, a polyvinylidene chloride film, or an ethylene vinyl alcohol copolymer; a laminate film obtained by appropriately stacking these films; and a gas barrier film obtained by subjecting any of these films to a surface treatment such as aluminum vapor deposition. In addition, a biomass film derived from a plant raw material such as sugar cane, potato (starch), or corn can also be used. Use of such a biomass film is desirable from a viewpoint of environmental protection.
• A polypropylene film and a polyethylene film are preferable from a viewpoint of cost. In addition, thepackaging film4 may be a satin film excellent in a design property and a hand feel property. Furthermore, in a case of packaging an odorous material such as scented tissue paper, an ethylene vinyl alcohol copolymer resin film and a polyethylene terephthalate resin film having an excellent aroma retaining property are desirable. Thepackaging film4 may be a multilayer resin film in which a polyethylene resin film or a polypropylene resin film is stacked on one surface or both surfaces of an ethylene vinyl alcohol copolymer resin film or a polyethylene terephthalate resin film to improve thermal fusibility.
• The thickness of thepackaging film4 only needs to be appropriately selected in consideration of flexibility, cost, gas permeability, and thermal fusibility at the time of packaging, but preferably, it is desirable that a thickness measured in conform with JIS P 8118 (1998) is 25 to 75 μm, and a softness measured based on a handle-o-meter method in conform with JIS L 1096 (2010) E method is 5.0 to 50.0 cN. With a thickness of 25 to 75 μm, the rigidity of theend surface4A is sufficiently enhanced. In addition, with such a thickness and softness, thepackaging film4 is hardly broken, and is easily formed into a packaging film having an excellent tissue paper take-out property, particularly an excellent pop-up property. Note that the thickness is measured using a dial thickness gauge (thickness measuring instrument) “PEACOCK G-1A type” (manufactured by Ozaki MFG. Co. Ltd.) and its equivalent machine after a test piece is sufficiently subjected to humidity control under conditions of JIS P 8111 (1998).
• In the film-packagedtissue assembly package10 according to the present invention, the plurality of overlap-packaged film-packagedtissues1 is gusset-packaged in thegusset packaging bag13 such that theend surface4A faces a top surface side having a grip portion and a bottom surface side facing the top surface side, and a longitudinal direction thereof is along a top-bottom direction.
• The gusset packaging is a packaging mode containing a packaging object in a bag-shaped space between bondedportions41 and42 bonded by thermal fusion or the like on the top and bottom sides, and particularly havinggusset portions43 and43 between the front surface and the back surface. For example, as illustrated inFIGS. 8 and 9, the gusset packaging is performed by thermally fusing a portion on a top surface side of a gusset tube obtained by foldingside portions40E and40E of a tubular shapedgusset packaging film14, which is also referred to as agusset tube40, into the bag inner side and flattening theside portions40E and40E to seal an opening on the top surface side as a top surfaceside sealing portion41, forming thegrip portion45, then expanding a bottomsurface side opening40X of the gusset packaging bag precursor sealed only on the top surface side, inserting a packaging object (in the illustrated mode, film-packagedtissues1,1, . . . ) from the bottomsurface side opening40X, and then also sealing the bottom surface side by an appropriate sealing means such as thermal fusion to form alower sealing portion42. In the gusset packaging, thegusset packaging bag13 serving as an exterior hasgusset portions43 and43 formed by opening theside portions40E and40E folded in a flat state, and surfaces connected to thegusset portions43. Note that two surfaces connected to thegusset portions43 and43 are afront surface46 and aback surface46. However, thefront surface46 and theback surface46 are relative to each other, and which surface is defined as the front surface is not limited.
• Thegrip portion45 is a surplus portion provided on the top surface side with respect to the top surfaceside sealing portion41 serving as a top surface side boundary with a bag portion containing the film-packagedtissue1 in order to enhance portability of the assembly package. In the illustrated mode, afinger hook hole47 is formed. When thefinger hook hole47 is formed in thegrip portion45 in this manner, the portability of the assembly package is further enhanced.
• In addition, in theassembly package10 according to the present invention, it is desirable that acut portion70 for opening with a perforation or the like for facilitating opening is formed. Furthermore, it is desirable that the cut portion is provided in a range Z1 extending from a lower end of a portion where thefinger hook hole47 is formed in thetop surface portion44 extending from thefront surface46 or theback surface46 to thegrip portion45 to thefront surface46 or theback surface46. In thetop surface portion44, a force applied to thetop surface portion44 when a finger is hooked into thefinger hook hole47 and lifted varies depending on a position of thefinger hook hole47. Specifically, a pulling force in the region Z1 extending from the lower end of the portion where thefinger hook hole47 of thegrip portion45 is formed to thefront surface46 and theback surface46 is smaller than that in a region extending from a lower end of a portion where thefinger hook hole47 is not formed to the front surface26 and the back surface26. In addition, thetop surface portion44 is a portion easily visible to a user.
• Therefore, when thecut portion70 is formed at such a position, the assembly package is not unintentionally opened at the time of carrying, and thecut portion70 can be easily visually recognized. The shape of the cut portion is not particularly limited, but as in the illustrated example, it is desirable that the cut portion has a shape protruding toward the grip portion side, for example, a substantially arc shape. With this shape, apicking piece70A is formed by pressing thecut portion70 to tear a perforation or the like. When thepicking piece70A is pulled in a bottom surface direction, an opening port is easily formed on a front surface or a back surface of the gusset packaging bag as illustrated inFIG. 8. A cut tie ratio of the perforation only needs to be appropriately designed.
• It is desirable that thegusset packaging film14 is a polypropylene film or a polyethylene film from viewpoints of cost and an opening property. The film preferably has a melting point of 150° C. or lower. Note that a lower melting point of the packaging film makes a thermal fusion treatment possible at a lower temperature, and is more preferable in sealing and forming a grip portion. However, when the melting point is excessively low, the packaging film is more likely to be scratched or a hole is more likely to be formed in the packaging film particularly due to friction or the like with fourcorner portions4tof theend surface4A of the film-packagedtissue1. Therefore, a substantial lower limit is 80° C. Examples of the polyethylene film include a linear low-density polyethylene film (LLDPE), a low-density polyethylene film (LDPE), and a medium-density polyethylene film (MDPE). Among these films, in the present invention, a linear low-density polyethylene film layer (LLDPE) having a density of 0.910 to 0.940 g/cm³and a melting point of 110 to 120° C. is particularly suitable from viewpoints of thermal fusibility and cost. In addition, a single-layer film of a polyethylene terephthalate film, a nylon film, a polyvinylidene chloride film, or an ethylene vinyl alcohol copolymer, a laminate film obtained by appropriately stacking these films, or a gas barrier film obtained by subjecting any of these films to a surface treatment such as aluminum vapor deposition may be used. Similarly to thepackaging film4, a biomass film derived from a plant raw material such as sugar cane, potato (starch), or corn can also be used. It is also desirable to use a biomass film for the gusset packaging film from a viewpoint of environmental protection.
• The thickness of thegusset packaging film14 constituting thegusset packaging bag13 is appropriately selected in consideration of a relationship with the contained film-packagedtissue1 in addition to circumstances peculiar to gusset packaging, such as tearability that makes opening easy at the time of opening, abrasion resistance particularly to the fourcorner portions4tof the end surface of the contained film-packagedtissue1, and flexibility that prevents application of an excessive load to a finger when thegusset packaging bag13 is carried with a finger through the finger hook hole formed in the grip portion in addition to flexibility, cost, and thermal fusibility at the time of packaging.
• From such a point, as for the preferable thickness and softness of thegusset packaging film14, a thickness measured in conform with JIS P 8118 (1998) is 10 to 65 μm, and a softness measured in conform with a handle-o-meter method in accordance with JIS L 1096 (2010) E method is 5.0 to 50.0 cN.
• In particular, it is desirable that the softness of thegusset packaging film14 constituting thegusset packaging bag13 is lower than the softness of thepackaging film4 constituting the film-packagedtissue1. In thegusset packaging bag13 having the grip portion on the top surface side, when thegrip portion45 is held, thegusset packaging bag13 is pulled in the top-bottom direction. Therefore, pressure may be applied to the film-packagedtissues1,1 . . . , which is a packaging object to be contained at this time. However, by lowering the softness of thegusset packaging film14, the rectangular parallelepiped shape of the film-packagedtissue1 to be contained is hardly deformed, fullness is hardly reduced without pressing thebundle3 inside, and a take-out property such as a pop-up property is hardly deteriorated.
• As an arrangement mode of the film-packagedtissues1 in thegusset packaging bag14, as in the illustrated mode, it is desirable that the plurality of film-packagedtissues1,1 . . . is arranged so as to form a substantially rectangular parallelepipedon as a whole such that the end surfaces4A are substantially flush with each other andlong side surfaces4B are substantially flush with each other. When the film-packagedtissues1,1 . . . are arranged in a substantially rectangular parallelepipedon in this manner, stability and shape retention as a whole of the assembly are enhanced, and the assembly is hardly collapsed or crushed by an external force. In addition, when the film-packagedtissues1 are arranged in this manner, the assembly of the film-packagedtissues1 has a rectangular parallelepiped shape in which an end surface assembly surface having high rigidity is formed on each of a top surface and a bottom surface. Therefore, the film-packagedtissues1 is less likely to be crushed or damaged by an external force particularly from the top-bottom direction is reduced. However, the arrangement of the film-packagedtissues1 in the film-packagedtissue assembly package10 according to the present invention is not limited to this mode.
• Here, as described above, in thegusset packaging bag13 having thegrip portion45 on a top surface side, when thegrip portion45 is held, thegusset packaging bag13 is pulled in the top-bottom direction. Therefore, a contained packaging object and thegusset packaging film14 may be rubbed against each other at this time. In thegusset packaging bag13, aridge line14E between thegusset portion43 and thefront surface46 and aridge line14E between thegusset portion43 and theback surface46, which arefold lines14E when thegusset packaging bag13 is a gusset tube as a precursor of the packaging bag, may be fragile. As illustrated inFIG. 9, in particular, there is agusset tube40 in which one sheet is formed into a tubular shape and end edges thereof are bonded to each other to form a tube, and one of thefold lines14E is anadhesive edge portion49. In thegusset packaging bag13 derived from the gusset tube configured in this manner, particularly thefold line14E related to theadhesive edge portion49 is easily torn. Furthermore, particularly in the gusset packaging having thegrip portion45 on a top surface side, a slight gap is formed on the top surface side. Therefore, restraint performance of a packaging object in the top-bottom direction tends to be weaker than that in a direction orthogonal to the top-bottom direction. On the other hand, in the overlap packaging, particularly the fourcorner portions4tof theend surface4A formed by the tube opening sealing portion has high rigidity and tends to be sharp.
• Therefore, in a film-packaged tissue used as a stationary type having a larger mass as compared with a portable film-packaged tissue, for example, as illustrated inFIG. 11 as a comparative embodiment, in a case of amode110A in which film-packagedtissues101A each having an end surface104A sealing a tube opening of overlap packaging are stacked and arranged such that the end surface104 faces a direction orthogonal to a top-bottom direction similarly to a conventional box product, four corner portions104tof a large number of the end surfaces104A are rubbed against a gusset packaging bag, the film-packagedtissue101A is not sufficiently restrained in a space on a top surface side and moves in agusset packaging bag113 when thegusset packaging bag113 is carried with agrip portion145, the four corner portions104tof the large number of end surfaces104A of the film-packagedtissues101A are rubbed against thegusset packaging bag113, and particularly a fragile portion in avicinity114Z of aridge line114E between agusset portion43 and a front surface and a fragile portion in avicinity114Z of aridge line114E between the gusset portion and a back surface may be torn (a torn portion inFIG. 9 is denoted by reference character200). In particular, when the packaging object has a rectangular parallelepiped shape as in the comparative embodiment, and four edges along the top-bottom direction of thegusset packaging bag113, that is, theridge line114E between the gusset portion and the front surface and theridge line114E between the gusset portion and the back surface easily coincide with the four corner portions104tof the end surfaces104A, a risk of breakage is significantly large. Such breakage does not occur in a lightweight portable film-packaged tissue, but significantly easily occur in a film-packaged tissue used as a stationary type having a large mass.
• In the assembly package according to the present invention, since the film-packagedtissues1,1 . . . are packaged such that eachend surface4A faces the top surface side where thegrip portion45 is formed and the bottom surface side facing the top surface side, and the longitudinal direction is along the top-bottom direction, such a risk is much smaller. In order to further reduce such a risk, it is desirable that as the number and the assembly mode of the film-packagedtissues1 in thegusset packaging bag13, the film-packaged tissues are arranged in two or less stages in the top-bottom direction. When the number of stages of the film-packagedtissues1 exceeds two in the top-bottom direction, shape maintainability of the assembly package is deteriorated. Specifically, in theassembly package10 according to the present invention, since the longitudinal direction of the film-packagedtissue1 is a direction along the top-bottom direction, when the number of stages exceeds two and is three or more, a standing property in the top-bottom direction is deteriorated, a gap is easily generated between the stages, and rubbing between thegusset packaging film14 and the film-packagedtissues1 easily occurs. In addition, since the number of easily contacting portions between the fourcorner portions4tof the end surfaces4A of the film-packagedtissues1 and thegusset packaging film14 also increases, a risk of breakage of thegusset packaging film14 increases. However, if at least the same number of film-packagedtissues1 are packaged, the arrangement mode according to the present invention is superior to a mode in which film-packagedtissues1 are stacked such that the end surfaces4A face a direction orthogonal to the top-bottom direction like a reference embodiment.
• The number of arrangement rows of the film-packagedtissues1 in the direction orthogonal to the top-bottom direction is not particularly limited, but it is desirable that the number is six or less. As an example of a preferred mode, as illustrated inFIG. 1, a total of five or six arrangement mode in which film-packaged tissues are arranged in one stage in the top-bottom direction, and five rows of film-packaged tissues or six rows of film-packaged tissues (not illustrated) are arranged in the direction orthogonal to the top-bottom direction, or as illustrated inFIG. 2, a total of ten or twelve arrangement mode in which film-packaged tissues are arranged in two stages in the top-bottom direction, and five rows of film-packaged tissues or six rows of film-packaged tissues (not illustrated) are arranged in the direction orthogonal to the top-bottom direction is preferable. Alternatively, although not illustrated, a total of ten or twelve arrangement mode in which film-packaged tissues are arranged in one stage in the top-bottom direction, five or six rows of film-packaged tissues are arranged in the direction orthogonal to the top-bottom direction, and two rows of film-packaged tissues are further arranged in a front surface-back surface direction is preferable. These arrangement modes are excellent in maintainability of a rectangular parallelepiped shape and standing stability, are excellent in portability and a stacking property at a storefront, and can further provide a sufficient number of products for a general purchase frequency.
• Furthermore, in the film-packagedtissue assembly package10 according to the present invention, it is desirable that the film-packagedtissues1 each have a bundle filling ratio of 100% or more. Here, the bundle filling ratio is a ratio of the height of thebundle3 taken out from thepackaging film4 to the height of the film-packagedtissue1. In a specific measurement method, first, the film-packagedtissue1 is subjected to humidity control for 24 hours under an environment of a standard state of 23° C.±1° C. and a humidity of 50±2% r.h according to JIS P 8111, and then placed on a horizontal table with an upper surface upward to measure the height of the film-packagedtissue1. An average value of measured values obtained by measuring a distance L1 between sharp portions of the fourcorner portions4tof theend surface4A at four places is used. Next, thebundle3 is taken out from the film-packagedtissue1, subjected to humidity control for 24 hours under an environment of a standard state of 23° C.±1° C. and a humidity of 50±2% r.h according to JIS P 8111, and then placed on a horizontal table with an upper surface upward to measure the height of thebundle3. An average value of measured values obtained by measuring a distance between the four corner portions of theshort side surface3A facing theend surface4A at four places is used. Next, a ratio of the height of thebundle3 taken out from thepackaging film4 to the height of the film-packagedtissue1 is calculated from the measured values.
• In such a film-packagedtissue1 having a bundle filling ratio of more than 100%, thebundle3 pushes thepackaging film4 from the inside. In the overlap packaging, theend surface4A has high rigidity and is hardly stretched or deformed. On the other hand, portions facing upper and lower surfaces and a longitudinal side surface of thebundle3 of thepackaging film4 have flexibility, and therefore these positions and alongitudinal edge1E are deformed so as to slightly protrude. In a case where the film-packagedtissues1 in which thelongitudinal edge1E protrudes in this manner are formed into assembly packaging toward the top surface side where thegrip portion45 is formed and the bottom surface side facing the top surface side such that the longitudinal direction is along the top-bottom direction, when the gusset packaging bag is pulled in the top-bottom direction by holding thegrip portion45, the fourcorner portions4tof theend surface4A hardly comes into contact with thegusset packaging film14 constituting thegusset packaging bag13 due to protrusion of thelongitudinal edge1E, and thegusset packaging bag13 is less likely to be broken.
• Furthermore, in the film-packagedtissue assembly package10 according to the present invention, it is desirable that the film-packaged tissue assembly arranged in the gusset packaging bag has a compression ratio of 80% or more in a direction orthogonal to the top-bottom direction. Here, the compression ratio in the direction orthogonal to the top-bottom direction is (a distance between the gusset portions of the gusset packaging bag (a width of the front surface or the back surface)) L2 to (a length of the film-packaged tissue assembly in the direction orthogonal to the top-bottom direction when the film-packaged tissue assembly is not packaged) when packaging is performed such that thegusset portions43 of thegusset packaging bag14 face upper andlower surfaces3C of the film-packagedtissue1. The length of the film-packaged tissue assembly in the direction orthogonal to the top-bottom direction when the film-packaged tissue assembly is not packaged is calculated by (a height of one film-packaged tissue in an upper surface-lower surface direction)×(the number of rows in the direction orthogonal to the top-bottom direction). The height of one film-packaged tissue in the upper surface-lower surface direction is measured as follows unlike the height in the bundle filling ratio.
• First, the individual film-packagedtissue1 is taken out from the film-packagedtissue assembly package10, and is subjected to humidity control for 24 hours under an environment of a standard state of 23° C.±1° C. and a humidity of 50±2% r.h according to JIS P 8111. Next, the film-packagedtissue1 is placed on a horizontal table, and a hard acrylic plate having a size protruding in a range of 5 cm or less from each edge (short side edge and long side edge) of an upper surface of the bundle is placed on an upper surface of thebundle3. When the size of the upper surface of the bundle is 160 to 200 mm in the longitudinal direction (width)×90 to 110 mm in the depth, the size of the acrylic plate only needs to be 250 mm×130 mm. The mass is 32 g or less. Next, the heights of four corners of the acrylic plate from the horizontal table are measured, and an average value thereof is calculated. This measurement is performed on all the film-packaged tissues which have been taken out. A further average value of the calculated average values is defined as the height of one film-packagedtissue1 in the upper surface-lower surface direction. A value obtained by multiplying the calculated value by the number of rows is defined as “the length of the film packaging assembly in the direction orthogonal to the top-bottom direction when the film packaging assembly is not packaged”. Next, a distance between thegusset portions43 of thegusset packaging bag13 is measured. In the measurement, an average value of values obtained by measuring the width of the front surface46 (between fold lines on the front surface) at three places and measuring the width of the back surface46 (between fold lines on the back surface) at three places is used. Next, a ratio of a distance between the gusset portions (the width of the front surface or the back surface) of thegusset packaging bag13 to the length in the direction orthogonal to the top-bottom direction when the film packaging assembly is not packaged is calculated.
• When the compression ratio of the film-packaged tissue assembly arranged in thegusset packaging bag13 in the direction orthogonal to the top-bottom direction exceeds 90%, the compression ratio is too high, and theend surface4A is easily distorted, and the fullness of thetissue paper2 is easily reduced. An upper limit of the compression ratio is not particularly limited in the packaging mode of the present invention. The film-packaged tissue only needs not to be excessively move in the gusset packaging bag. The compression ratio is not necessarily 100% or less. However, when the compression ratio is 100% or less, movement of the film-packaged tissue assembly is restrained by an exterior film constituting the gusset packaging bag, the exterior film is hardly broken, and furthermore, the assembly package is hardly collapsed, and the shape retention of the rectangular parallelepipedon is enhanced. Therefore, it is more desirable that the compression ratio is 100% or less.
• On the other hand, each of sheets of thetissue paper2 constituting thebundle3 packaged in the film-packagedtissue1 has a ply structure in which two or three thin sheets each having a crepe are stacked and formed into a set. Thistissue paper2 is a dry type, and not a so-called wet type impregnated with a liquid chemical. Therefore, thebundle3 formed by thetissue paper2 contains a large amount of air. Note that as the drytype tissue paper2, there is also liquid chemical-imparting type tissue paper to which a liquid chemical such as a moisturizing component that increases moisture by moisture absorption, such as a polyol represented by glycerin, is applied, and such tissue paper is included in the drytype tissue paper2. Rather, since such liquid chemical-imparting type tissue paper has a low restoring property when being compressed due to a high moisture content, the action and effect of the present invention with less reduction in fullness are more effectively exhibited. Note that the moisture content of the liquid chemical-imparting type tissue paper is about 10 to 14% by mass. The moisture content is a ratio of moisture contained in tissue paper in a standard state.
• As a raw material pulp of thin sheets constituting thetissue paper2, a pulp obtained by blending NBKP and LBKP is used. The raw material pulp may contain a used paper pulp, but preferably contains only NBKP and LBKP from a viewpoint of texture or the like. A blend ratio thereof is preferably NBKP:LBKP=20:80 to 80:20, and particularly preferably NBKP:LBKP=30:70 to 60:40.
• A basis weight per thin sheet constituting each ply of thetissue paper2 is 10 to 25 g/m². The basis weight is preferably 12 to 18 g/m². The basis weight here is measured by the measurement method of JIS P 8124 (1998). The paper thickness of thetissue paper2 for two plies is 90 to 200 μm, and more preferably 90 to 140 μm. The paper thickness for three plies is 120 to 300 μm. The paper thickness here is a value obtained by sufficiently subjecting a test piece to humidity control under conditions of JIS P 8111 (1998), and then measuring the paper thickness in a state of a plurality of plies using a dial thickness gauge (thickness measuring instrument) “PEACOCK G type” (manufactured by Ozaki MFG. Co. Ltd.) and its equivalent machine under the same conditions.
• Tissue paper having the above basis weight and paper thickness sufficiently exhibits an effect thereof particularly without reducing fullness when the tissue paper is formed into an assembly package having a low compression ratio according to the present invention. Note that the top-bottom direction and the up-down direction in the present invention and the present specification are appropriately changed depending on the directions of the film-packaged tissue assembly package and the film-packaged tissue, and do not mean absolute directions.
REFERENCE SIGNS LIST
• 1,101,101A Film-packaged tissue
• 1E Longitudinal edge of film-packaged tissue
• 2 Tissue paper
• 2A Inner side of folded sheet
• 2B Folded piece
• 2C Folded edge
• 3 Bundle of tissue paper
• 3A short side surface
• 3B Longitudinal side surface
• 3C Upper and lower surfaces of bundle
• 4 Packaging film
• 4tFour corner portions of end surface
• 4X Overlapping portion of packaging film
• 4Y Extending portion of packaging film
• 4Z Tube opening of packaging film
• 4A,140A End surface
• 4B Long side surface
• 4C Upper surface
• 5 Opening perforation
• 10,110A Film-packaged tissue assembly package
• 13,113 Gusset packaging bag
• 14 Gusset packaging film
• 14E Folding line
• 40 Gusset tube
• 40E Side portion of gusset packaging film in gusset tube mode
• 40X Bottom surface side opening of gusset packaging bag precursor
• 41 Top surface side sealing portion
• 42 Bottom surface side sealing portion
• 43 Gusset portion
• 44 Top surface portion
• 45,145 Grip portion
• 46 Front surface, Back surface
• 47 Finger hook hole
• 49 Bonded portion
• 50 Opening portion
• 51 Slit portion
• 52 Widening portion
• 53 Curved portion
• 110Z Space
• 110A,110B Tissue paper package assembly package
• 101 Tissue paper package (box product)
• 111 Exterior film
• 70 Cut portion
• 70A Picking piece
• L1 Distance between four corner portions of end surface in height direction
• L2 Width of front surface or back surface of gusset packaging bag
• L3 Length of take-outport forming portion5 in longitudinal direction
• L4 Length of bundle in longitudinal direction

Claims (6)

1. A film-packaged tissue assembly package comprising:

a gusset packaging bag having a grip portion on a top surface side; and

a plurality of film-packaged tissues arranged and packaged in the gusset packaging bag, wherein

each of the film-packaged tissues is overlap-packaged and has end surfaces formed of sealed portions of tube openings at both ends in a longitudinal direction, and

the overlap-packaged film-packaged tissues are gusset-packaged such that each end surface faces the top surface side having the grip portion and a bottom surface side facing the top surface side, and the longitudinal direction is along a top-bottom direction.

2. The film-packaged tissue assembly package according toclaim 1, wherein

the film-packaged tissue paper is obtained by overlap-packaging a bundle of tissue paper having a substantially rectangular parallelepiped shape in which a plurality of sheets of tissue paper is folded and stacked, and has a take-out port forming portion of the tissue paper on an upper surface, and the end surface formed by the barrel opening sealing portion is located facing a short side surface of the bundle.

3. The film-packaged tissue assembly package according toclaim 1, wherein

packaging is performed such that the plurality of film-packaged tissues is arranged in a substantially rectangular parallelepiped shape such that the end surfaces are substantially flush with each other and long side surfaces are substantially flush with each other, and gusset portions of the gusset packaging bag face upper or lower surface of the film-packaged tissues.

4. The film-packaged tissue assembly package according toclaim 3, wherein

two or less stages of the film-packaged tissues are arranged in the gusset packaging bag in the top-bottom direction such that the end surfaces butt against each other.

5. The film-packaged tissue assembly package according toclaim 3, wherein

the film-packaged tissue assembly arranged in the gusset packaging bag has a compression ratio of 80% or more in a direction orthogonal to the top-bottom direction.

6. The film-packaged tissue assembly package according toclaim 1, wherein

the film-packaged tissues each have a bundle filling ratio of 100% or more.

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