Sanitary tissue paper packaging, and method for manufacturing sanitary tissue paper packaging.

Abstract

To provide a sanitary tissue paper packaging body using a paper packaging bag that does not use any resin.SOLUTION: There is provided a sanitary tissue paper packaging body in which sanitary tissue paper is stored in a packaging bag. The packaging bag is composed only of a paper base material, a seal part of the packaging bag is bonded with a hot melt adhesive.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a sanitary tissue paper packaging and a method for manufacturing a sanitary tissue paper packaging. [Background technology]

[0002] Sanitary tissue paper packaging, which contains sanitary tissue paper such as toilet paper and kitchen paper, is distributed in a state in which multiple sheet rolls are contained in a resin film packaging bag (for example, Patent Document 1). In recent years, in line with the movement to reduce CO2 emissions and move away from plastic, some packaging bags that make up sanitary tissue paper packaging use a material made by laminating polyethylene (PE) onto paper (for example, Patent Document 2). [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2014-19467 [Patent Document 2] Japanese Patent Publication No. 2021-172415 [Overview of the project] [Problems that the invention aims to solve]

[0004] Conventional sanitary tissue paper packaging uses a material where PE is laminated to paper, which can reduce the amount of plastic used, but it is not sufficient from the perspective of plastic reduction, and sanitary tissue paper packaging that does not use resin is desirable.

[0005] The object of the present invention is to provide a hygienic tissue paper packaging body that uses a paper packaging bag that does not use any resin. [Means for solving the problem]

[0006] A first aspect of the present invention is a sanitary tissue paper package in which sanitary tissue paper is contained in a packaging bag, wherein the packaging bag is made only of a paper base material, and the seal portion of the packaging bag is bonded with a hot melt adhesive.

[0007] In this specification, hot melt adhesive refers to a thermoplastic adhesive that is applied in a molten state due to heating.

[0008] In the first embodiment, the packaging bag is made solely of a paper base material, and the seal portion of the packaging bag is bonded with a hot-melt adhesive, thereby providing a hygienic tissue paper packaging body using a paper packaging bag that does not use any resin in the base material. Therefore, the hygienic tissue paper packaging body obtained in the first embodiment can contribute to reducing plastic use.

[0009] Furthermore, in the first embodiment, the sealing portion is formed by applying hot-melt adhesive to the paper base material constituting the packaging bag. Therefore, even if the packaging bag is made of paper that does not use any resin in the base material and has no flexibility, high adhesion can be provided to the sealing portion of the packaging bag.

[0010] Furthermore, in the first embodiment, since the packaging bag constituting the sanitary tissue packaging is a paper packaging bag that does not use any resin as a base material, when forming the seal portion of the packaging bag, the melted resin does not adhere to the sanitary tissue containing it. Therefore, the sanitary tissue does not adhere to the seal portion of the packaging bag.

[0011] A second aspect of the present invention is a sanitary tissue paper packaging in which the hot melt adhesive is sprayed in a spiral manner.

[0012] In the second embodiment, by spraying the hot melt adhesive in a spiral pattern, it becomes possible to partially apply the hot melt adhesive to the area where the seal portion is formed, thereby reducing the amount of hot melt adhesive used and suppressing unevenness of the hot melt adhesive after application. Therefore, in the second embodiment, stable adhesion can be provided to the seal portion.

[0013] The third aspect according to the present invention is a sanitary tissue paper package in which the hot melt adhesive contains an olefin resin or a synthetic rubber.

[0014] In the third aspect, since the hot melt adhesive contains an olefin resin, heating is not required when adhering the seal portion with the hot melt adhesive, so that the formation of the seal portion is easy. Further, since the hot melt adhesive contains a synthetic rubber, viscoelasticity is imparted to the seal portion, and the adhesiveness of the seal portion can be enhanced.

[0015] The fourth aspect according to the present invention is a sanitary tissue paper package in which the hot melt adhesive is spray-coated in a spiral shape.

[0016] In this specification, the basis weight indicates the basis weight measured in accordance with the provisions of JIS P 8124 (2011).

[0017] In the fourth aspect, when the basis weight of the base material of the packaging bag is 30 g / m 2 or more and 100 g / m 2 or less, the strength of the packaging bag can be maintained. Therefore, according to the fourth aspect, even when the packaging bag is composed only of a paper base material, a sanitary tissue paper package composed of a packaging bag that is difficult to break can be provided.

[0018] The fifth aspect according to the present invention is a sanitary tissue paper package in which the base material is formed of single-sided coated paper.

[0019] In this specification, single-sided coated paper refers to paper obtained by heating and drying with a Yankee dryer after papermaking, and having a glossy surface with one side highly glossed.

[0020] In the fifth aspect, since the base material of the packaging bag is formed of single-sided coated paper, the glossy surface of the single-sided coated paper can be used as the printing surface. Therefore, according to the fifth aspect, even when the packaging bag is composed only of a paper base material, the packaging bag can be printed.

[0021] A sixth aspect of the present invention is a sanitary tissue paper packaging body in which the packaging bag is caramelized.

[0022] In this specification, caramel packaging refers to a packaging bag in which the opening end of a cylindrical packaging bag sheet is folded and sealed.

[0023] In the sixth embodiment, even if a paper packaging bag made of paper that does not use any resin as a base material and has no flexibility is caramelized, high adhesion can be given to the sealed part of the packaging bag. Therefore, it is possible to provide a sanitary tissue paper packaging body composed of a caramelized packaging bag that is resistant to tearing during manufacturing and transportation, and whose seal is resistant to peeling. Therefore, according to the sixth embodiment, even if the sanitary tissue paper is in a bulky form such as a roll, it can be contained in the packaging bag in a stable state.

[0024] A seventh aspect of the present invention is a method for manufacturing a sanitary tissue paper package in which sanitary tissue paper is contained in a packaging bag, wherein only a paper base material is used for the packaging bag, and the seal portion of the packaging bag is bonded with a hot melt adhesive.

[0025] In the seventh embodiment, by using only a paper base material for the packaging bag and bonding the seal portion of the packaging bag with a hot melt adhesive, a sanitary tissue packaging similar to the sanitary tissue packaging described above can be obtained, and the same effects as the sanitary tissue packaging described above can be obtained.

[0026] In other words, in the seventh embodiment, a hygienic tissue paper packaging can be provided that uses a paper packaging bag that does not use any resin as a base material. Therefore, the hygienic tissue paper packaging obtained in the seventh embodiment can contribute to reducing plastic use.

[0027] Furthermore, in the seventh embodiment, the sealing portion is formed by applying hot-melt adhesive to the paper base material constituting the packaging bag. Therefore, even if the packaging bag used as the base material is a paper packaging bag that does not use any resin and has no flexibility, high adhesion can be provided to the sealing portion of the packaging bag constituting the base material.

[0028] Furthermore, in the seventh embodiment, since the packaging bag constituting the sanitary tissue packaging is a paper packaging bag that does not use any resin as a base material, when forming the seal portion of the packaging bag constituting the sanitary tissue packaging, the melted resin does not adhere to the sanitary tissue containing it. Therefore, in the sanitary tissue packaging, the sanitary tissue does not adhere to the seal portion of the packaging bag. [Effects of the Invention]

[0029] According to one aspect of the present invention, a hygienic tissue paper packaging body can be provided that uses a paper packaging bag that does not use any resin. [Brief explanation of the drawing]

[0030] [Figure 1] This diagram shows a sanitary tissue paper package containing sanitary tissue paper in a packaging bag. [Figure 2] This figure shows an example of sanitary tissue paper contained in a packaging bag. [Figure 3] This is a view of the sanitary tissue paper packaging shown in Figure 1, seen from the top. [Figure 4] This is a view of the sanitary tissue paper packaging shown in Figure 1, from the bottom side. [Figure 5] This is a view of the sanitary tissue paper packaging shown in Figure 1, seen from one side. [Figure 6] This is a view of the sanitary tissue paper packaging shown in Figure 1, from the other side. [Figure 7] This is a view of the sanitary tissue paper packaging shown in Figure 1, seen from one end side. [Figure 8] This is a view of the sanitary tissue paper packaging shown in Figure 1, from the other end side. [Figure 9] This is a diagram showing a cross-section of a packaging bag. [Figure 10] This diagram shows part of the manufacturing process for sanitary tissue paper packaging. [Figure 11] This diagram shows part of the manufacturing process for sanitary tissue paper packaging. [Figure 12] This diagram shows part of the manufacturing process for sanitary tissue paper packaging. [Figure 13]This diagram shows part of the manufacturing process for sanitary tissue paper packaging. [Figure 14] This diagram shows part of the manufacturing process for sanitary tissue paper packaging. [Modes for carrying out the invention]

[0031] <Hygienic thin paper packaging> Embodiments of the present invention will be described in detail with reference to the drawings. In each drawing, common parts may be denoted by the same reference numerals and their description may be omitted. Also, the scale of each component in each drawing may differ from the actual scale. In each drawing, a three-dimensional Cartesian coordinate system with three axes (X, Y, and Z directions) is used, with the longitudinal direction of the packaging bag being the X direction, the width direction being the Y direction, and the height direction (vertical or thickness direction) being the Z direction.

[0032] Figure 1 shows a sanitary tissue paper packaging in which a sheet is contained in a packaging bag of the embodiment. Figure 2 shows an example of sanitary tissue paper contained in a packaging bag. Figures 3, 4, 5, 6, 7, and 8 are views of the sanitary tissue paper packaging of Figure 1 from the top side, bottom side, one side side, the other side side, one end side, and the other end side, respectively. The sanitary tissue paper packaging 100 is an example of a sanitary tissue paper packaging according to this embodiment and includes a packaging bag 10 and a sheet roll 20.

[0033] <<Hygienic tissue paper>> The sheet roll 20 is an example of sanitary tissue paper contained in the packaging bag according to this embodiment. As shown in Figure 1, four sheet rolls 20 are contained in the packaging bag 10. As shown in Figure 2, the sheet roll 20 is constructed by winding a long sheet 21 around a hollow core 22. Note that the sheet is not limited to a sheet roll as in this embodiment, and may be a sheet laminate in which multiple sheets are stacked together.

[0034] The form of the sheet roll 20 is not particularly limited and can be applied to, for example, sanitary tissue paper such as toilet paper, kitchen paper, paper towels, and tissue paper. The use of the sheet roll 20 is not particularly limited and can be applied to industrial, household, or portable use. Among these, household toilet paper is preferably used as the sheet roll 20 in this embodiment.

[0035] The circumferential surface 21A of the sheet roll 20 faces the top surface 11, bottom surface 12, side surface 13, and side surface 14 of the packaging bag 10, respectively, and a portion of the circumferential surface 21A contacts a portion of the circumferential surface 21A of an adjacent sheet roll 20. Of the four sheet rolls 20, the two on the end surface 15 side of the packaging bag 10 have their side surface 21B facing the end surface 15 of the packaging bag 10, and the two on the end surface 16 side of the packaging bag 10 have their side surface 21C facing the end surface 16 of the packaging bag 10.

[0036] The dimensions of the sheet roll 20 are not particularly limited, but the width dimension (roll width) L2 of the long sheet 21 in the width direction (Y direction) is preferably 85 mm or more and 300 mm or less, and the diameter dimension (roll diameter) W2 of the long sheet 21 in the radial direction (X direction or Z direction) is preferably 80 mm or more and 125 mm or less (see Figure 2).

[0037] The number of plies in the long sheet 21 is not particularly limited, but can be one or more plies, preferably one ply or two plies (two layers).

[0038] The material of the long sheet 21 is not particularly limited, but for example, sheets of paper, nonwoven fabric, or cloth can be used, and paper (paper sheet) is preferred. When the long sheet 21 is a paper sheet, base paper with pulp as the main raw material is used. The pulp composition can be any known composition for paper sheets. For example, the pulp blending ratio can be 50% by mass or more, preferably 90% by mass or more, and more preferably 100% by mass.

[0039] In addition, the pulp composition in the long sheet 21 (paper sheet) is not particularly limited. For example, softwood pulps such as NBKP (needle leaf kraft pulp) and NUKP (needle leaf unbleached pulp), and hardwood pulps such as LBKP (hardwood kraft pulp) and LUKP (hardwood unbleached pulp) can be used in any ratio.

[0040] The ratio of hardwood pulp to softwood pulp is not limited, but is preferably 10:90 to 80:20, and more preferably a pulp composition in which the ratio of softwood pulp to hardwood pulp is higher. Also, wastepaper pulp may be used for the pulp contained in the long sheet 21 (paper sheet).

[0041] The basis weight of the long sheet ²¹ is not particularly limited, but depending on the ply number, in the case of paper, it is 5 g / m 2 or more and 80 g / m 2 or less, preferably 10 g / m 2 or more and 60 g / m 2 or less, more preferably 10 g / m 2 or more and 45 g / m 2 or less. In the case of non-woven fabric, those of 20 g / m 2 or more and 100 g / m 2 or less are desirable. The basis weight is measured in accordance with the provisions of JIS P 8124 (2011).

[0042] Also, the thickness of the long sheet 21 (paper sheet) is not particularly limited, and the paper thickness measured under the environment of JIS P 8111 (1998) can be adopted. For example, when the long sheet 21 is paper, the paper thickness is 50 μm or more and 200 μm or less per 2 plies, preferably 60 μm or more and 150 μm or less, more preferably 80 μm or more and 100 μm or less.

[0043] Also, the long sheet 21 (paper sheet) may be embossed. Such embossing can be carried out by a known embossing method.

[0044] Furthermore, the hollow core 22 is a cylindrical winding core around which the long sheet 21 is wound in the circumferential direction (R direction) (see Figure 2). The hollow core 22 also includes a structure without a winding core (coreless structure). The material of the hollow core 22 is not particularly limited, and paper, resin, etc. can be used.

[0045] The form of the hollow core 22 is not particularly limited. For example, if the hollow core 22 is a paper tube, it may be made of a single layer of cardboard or multiple layers of cardboard. It may also be coated cardboard that has been pre-printed or coated with a deodorant. Furthermore, the winding method of the paper tube is not particularly limited. For example, it may be flat-wound or spiral-wound (a so-called spiral paper tube).

[0046] The dimensions of the hollow core 22 are not particularly limited. For example, the length of the hollow core 22 in the longitudinal direction (Y direction) is approximately the same as the roll width of the sheet roll 20 in the width direction (Y direction) (85 mm to 300 mm). The diameter of the hollow core 22 in the radial direction (X or Z direction) is 33 mm to 50 mm, preferably 35 mm to 41 mm (see Figure 2).

[0047] <<Packaging bag>> The packaging bag 10 is an example of a packaging bag according to this embodiment. The packaging bag 10 is composed of only one layer of paper base material 10A (Figure 9). That is, the proportion of paper in the packaging bag 10 is 100% or more.

[0048] Here, paper is, for example, a material made by binding plant fibers together (pulp). The pulp composition in the paper component is not limited, and for example, the ratio of hardwood pulp to softwood pulp is 0:100 to 70:30, preferably a pulp composition in which the proportion of softwood pulp is greater than that of hardwood pulp. Recycled paper pulp may also be used as the pulp.

[0049] The type of paper used for the base material 10A of the packaging bag 10 is not particularly limited, but for example, packaging paper can be used. Packaging paper is further classified into unbleached packaging paper or bleached packaging paper.

[0050] Examples of unbleached wrapping paper include double-sided kraft paper for heavy bags, general double-sided kraft paper, special double-sided kraft paper, ribbed kraft paper, and single-sided glossy kraft paper.

[0051] Examples of bleached wrapping paper include pure white roll paper, double-sided bleached kraft paper, single-sided glossy bleached kraft paper, and thin imitation paper.

[0052] Among these, the paper used for the base material 10A of the packaging bag 10 is preferably one-sided glossy paper, and more preferably one-sided glossy kraft paper. Here, one-sided glossy paper refers to paper obtained by heating and drying in a Yankee dryer after papermaking, resulting in one side being a highly glossy surface.

[0053] The basis weight of the paper used for the base material 10A of the packaging bag 10 is not limited, but is preferably 30 g / m². 2 More than 100g / m 2 The following applies. The basis weight is measured in accordance with the provisions of JIS P 8124 (2011). It is preferable that the basis weight of the paper used for the base material 10A of the packaging bag 10 be changed depending on the number of sheet rolls 20 contained in the packaging bag 10.

[0054] For example, if the packaging bag 10 contains four sheet rolls 20 (four rolls), the basis weight of the paper used for the base material 10A of the packaging bag 10 is 30 g / m². 2 More than 60g / m 2 The following is preferable. Also, if there are 12 sheet rolls 20 (12 rolls) contained in the packaging bag 10, the basis weight of the paper used for the base material 10A of the packaging bag 10 should be 50 g / m². 2 More than 100g / m 2 The following is preferable:

[0055] The thickness of the base material 10A constituting the packaging bag 10 is not limited, but is preferably 20 μm to 100 μm, more preferably 25 μm to 90 μm, and even more preferably 40 μm to 75 μm. The thickness is measured in accordance with the provisions of JIS P 8118 (2014).

[0056] The packaging bag 10 has a top surface 11, a bottom surface 12, side surfaces 13, side surfaces 14, end surfaces 15, and end surfaces 16. In the packaging bag 10, the top surface 11 and bottom surface 12 face each other in the vertical direction (Z direction), side surfaces 13 and 14 face each other in the width direction (Y direction), and end surfaces 15 and 16 face each other in the longitudinal direction (X direction). Furthermore, the end surfaces 15 and 16 are continuous with any of the top surface 11, bottom surface 12, side surfaces 13, and side surfaces 14 (Figures 1, 3 to 8).

[0057] Furthermore, the dimensions of the packaging bag 10 are not particularly limited, but for example, the length L1 in the longitudinal direction (X direction) of the packaging bag 10 is 170 mm or more and 600 mm or less, the width W1 in the width direction (Y direction) perpendicular to the longitudinal direction (X direction) of the packaging bag 10 is 160 mm or more and 240 mm or less, and the height H1 in the height direction (Z direction) is 160 mm or more and 240 mm or less. Note that these dimensions of the packaging bag 10 are given when four sheet rolls 20 are contained in the packaging bag 10.

[0058] In the packaging bag 10, an opening (not shown) may be provided on at least one of the top surface 11, bottom surface 12, end surface 15, or end surface 16 of the packaging bag 10. Such an opening can be formed, for example, by creating a tearing line such as a perforation and tearing along this tearing line.

[0059] Here, the tear-off line is a line in which cuts and ties (uncut portions between two cuts) are arranged alternately, and when a tie breaks, the adjacent cuts become continuous cuts. The manner of the cuts in the tear-off line is not particularly limited, but preferably they penetrate the base material 10A of the packaging bag.

[0060] In the packaging bag 10, ventilation holes (not shown) may be provided on at least one of the top surface 11, bottom surface 12, side surface 13, side surface 14, end surface 15, and end surface 16 of the packaging bag 10. The ventilation holes can function as air holes in the packaging bag 10. The number, shape, and size of the ventilation holes are arbitrary. The form of the ventilation holes is arbitrary, but it is preferable that they penetrate the base material 10A of the packaging bag.

[0061] The packaging bag 10 has a pair of sealing portions 30, 40, and 50 at both ends in the longitudinal direction (X direction). The sealing portions 30 and 40 are formed as side seals on the end faces 15 and 16 of the packaging bag 10, and the sealing portion 50 is formed as a bottom seal on the bottom face 12 of the packaging bag 10.

[0062] The packaging form of the packaging bag 10 is not particularly limited. For example, the base material 10A of the packaging bag 10 may be processed into a cylindrical shape and the open end of the cylindrical base material 10A may be sealed (pillow packaging bag), the ends of the cylindrical packaging bag 10 sheet may be folded and sealed (caramel packaging bag), or a combination of these may be used. In the case of pillow packaging bags, the cylindrical base material 10A may be folded into a gusset shape.

[0063] In the sanitary tissue paper packaging 100 of this embodiment, the packaging bag 10 is made of a caramel packaging bag. Specifically, the seal portions 30 and 40 (side seals) on the end faces 15 and 16 are sealed in a folded state (Figures 1, 2 to 8). Here, the caramel packaging is made by processing a packaging bag sheet (not shown) into a cylindrical shape, and sealing (enclosing) the open end of the cylindrical packaging bag sheet in a folded state (Figures 1, 7, 8, 10 to 14).

[0064] In this embodiment, the sanitary tissue paper packaging 100 has its sealing portions 30, 40, and 50 of the packaging bag 10 bonded with hot melt adhesive. Specifically, with the glossy side of the glossy paper constituting the base material 10A of the packaging bag 10 positioned on the outside of the packaging bag 10, the sealing portions 30, 40, and 50 are bonded with hot melt adhesive (Figures 1, 7 to 9).

[0065] Here, hot-melt adhesive is a thermoplastic adhesive that is applied in a molten state due to heating.

[0066] The material of the hot melt adhesive is not particularly limited, but the hot melt adhesive preferably contains an olefin resin or synthetic rubber.

[0067] Examples of olefin resins include ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, and 4-methyl-1-pentene. These can be used individually or as copolymers of two or more types.

[0068] Examples of synthetic rubbers include styrene-butadiene rubber (SBR), butadiene rubber (BR), chloroprene rubber (CR), isoprene rubber (IR), ethylene propylene rubber (EPM, EPDM), and acrylonitrile butadiene rubber (NBR).

[0069] The application method of the hot melt adhesive to the sealing portions 30, 40, and 50 of the packaging bag 10 is not particularly limited. Examples of application methods for the hot melt adhesive include surface application, bead application, and spray application.

[0070] Furthermore, as for the application method of the hot melt adhesive, bead application and spray application are preferred in order to facilitate partial application to the sealing portions 30, 40, and 50 of the packaging bag 10, and spiral spray application is even more preferred in order to reduce the amount of hot melt adhesive used and suppress unevenness after bonding.

[0071] In this embodiment, as described above, the packaging bag 10 is composed solely of a paper base material 10A, and the sealing portions 30, 40, and 50 of the packaging bag 10 are bonded with a hot-melt adhesive. This makes it possible to provide a hygienic tissue paper packaging body 100 using a paper packaging bag 10 that does not use any resin in the base material 10A. Therefore, the hygienic tissue paper packaging body 100 obtained in this embodiment can contribute to reducing plastic use.

[0072] Furthermore, in this embodiment, the sealing portions 30, 40, and 50 are formed by applying hot melt adhesive to the paper base material 10A that constitutes the packaging bag 10. Therefore, even if the packaging bag 10 is made of paper that does not use any resin in the base material 10A and has no flexibility, high adhesion can be provided to the sealing portions 30, 40, and 50 of the packaging bag 10.

[0073] Furthermore, in this embodiment, since the packaging bag 10 constituting the sanitary tissue packaging 100 is a paper packaging bag 10 that does not use any resin in the base material 10A, when forming the seal portions 30, 40, and 50 of the packaging bag 10, the melted resin does not adhere to the sanitary tissue (sheet roll 20) that contains it. Therefore, the sanitary tissue (sheet roll 20) does not adhere to the seal portions 30, 40, and 50 of the packaging bag 10.

[0074] In the sanitary tissue paper packaging 100 of this embodiment, as described above, by spraying the hot melt adhesive in a spiral pattern, it becomes possible to partially apply the hot melt adhesive to the areas where the seal portions 30, 40, and 50 are formed. This reduces the amount of hot melt adhesive used while suppressing unevenness of the hot melt adhesive after application. Therefore, in this embodiment, stable adhesion can be provided to the seal portions 30, 40, and 50.

[0075] In this embodiment, as described above, since the hot melt adhesive contains an olefin resin, heating is not required when bonding the sealing portions 30, 40, and 50 with the hot melt adhesive, making it easy to form the sealing portions 30, 40, and 50. Furthermore, since the hot melt adhesive contains synthetic rubber, viscoelasticity is imparted to the sealing portions 30, 40, and 50, improving their adhesion.

[0076] In this embodiment, as described above, the basis weight of the base material 10A of the packaging bag 10 is 40 g / m². 2 More than 60g / m 2The strength of the packaging bag 10 can be maintained by the following conditions. Therefore, according to this embodiment, even if the packaging bag 10 is made only of a paper base material 10A, it is possible to provide a hygienic tissue paper packaging body 100 that is resistant to tearing.

[0077] In this embodiment, as described above, since the base material 10A of the packaging bag 10 is made of glossy paper on one side, the glossy side of the glossy paper can be used as the printing surface. Therefore, according to this embodiment, even if the packaging bag 10 is made only of a paper base material 10A, printing can be applied to the packaging bag 10.

[0078] In this embodiment, as described above, even when a paper packaging bag 10, which does not use any resin in the base material 10A and has no flexibility, is caramelized, high adhesion can be provided to the seal portions 30, 40, and 50 of the packaging bag 10. Therefore, it is possible to provide a sanitary tissue paper packaging body 10 composed of a caramel packaging bag 10 that is resistant to tearing during manufacturing and transportation, and whose seal portions 30, 40, and 50 are resistant to peeling. As a result, even if the sanitary tissue paper (sheet roll 20) is in a bulky form such as a roll, it can be stably housed in the packaging bag 10.

[0079] <Method for manufacturing sanitary tissue paper packaging> The method for manufacturing the sanitary tissue paper packaging according to this embodiment is a method for manufacturing the sanitary tissue paper packaging 100 described above, wherein only a paper base material 10A is used for the packaging bag 10, and the seal portions 30, 40, and 50 of the packaging bag 10 are bonded with a hot melt adhesive.

[0080] Specifically, first, a sheet 60 for forming the packaging bag 10 is flowed (conveyed) onto the production line, and a hot melt adhesive G1 for the bottom seal 50 is applied to the sheet 60 in the direction of flow (MD direction) (Figure 10). At this time, the application position of the hot melt adhesive G1 is near one end 61 in the direction perpendicular to the direction of flow (MD direction) of the sheet 60 (CD direction). In addition, the application pattern of the hot melt adhesive G1 is spiral.

[0081] Next, sanitary tissue paper (four sheet rolls 20) is placed beneath the sheet 60 to which the hot melt adhesive G1 for the bottom seal 50 has been applied. The arrangement of the sanitary tissue paper (four sheet rolls 20) is such that the circumferential surfaces 21A of the four sheet rolls 20 face the sheet 60, and the side surfaces 21B of two of the sheet rolls 20 face the side surfaces 21B of the other two sheet rolls 20.

[0082] Next, the sheet 60 is wrapped around the circumferential surface 21A of the positioned sanitary tissue paper (four sheet rolls 20). At this time, the other end 62 of the sheet 60 in the CD direction is attached to the part to which the hot melt adhesive G1 has been applied. As a result, the sheet 60 is formed into a cylindrical shape while wrapping the sanitary tissue paper (four sheet rolls 20) (Figure 11).

[0083] Next, the openings at both ends of the tubular sheet 60 (hereinafter referred to as tubular sheet CL) (ends 63 and 64 in the MD direction of sheet 60) are folded to form four folded pieces 65, 66, 67, and 68. The folded pieces 65 and 66 face each other in the left-right direction (HD direction) of the tubular sheet CL, and the folded pieces 67 and 68 face each other in the up-down direction (VD direction) of the tubular sheet CL (Figure 12).

[0084] Next, hot melt adhesive G2 for the side seals 30 and 40 is applied to the folded pieces 65 and 66 (Figure 12). At this time, the hot melt adhesive G1 is applied near the tip 65A of the folded piece 65 and near the tip 66A of the folded piece 66. The application pattern of the hot melt adhesive G2 is spiral.

[0085] Next, the folded piece 67 is attached to the portions of the folded pieces 65 and 66 to which the hot melt adhesive G2 has been applied. Hot melt adhesive G3 for the side seals 30 and 40 is then applied to the attached folded piece 67. At this time, the hot melt adhesive G3 is applied closer to the tip 67A of the folded piece 67 (Figure 13). The application pattern of the hot melt adhesive G3 is spiral.

[0086] Next, the folded piece 68 is attached to the portions of the folded pieces 65 and 66 to which the hot melt adhesive G2 has been applied (the portions that will be exposed after the folded piece 67 is attached), and to the portion of the folded piece 67 to which the hot melt adhesive G3 has been applied. This closes one of the openings of the tubular sheet CL.

[0087] Similarly, when the other opening of the tubular sheet CL is closed, a sanitary tissue paper package 100 is obtained in which the sanitary tissue paper (four sheet rolls 20) is contained in the packaging bag 10 (Figure 14). Furthermore, the packaging form of the packaging bag 10 that constitutes the obtained sanitary tissue paper package 100 is caramel packaging.

[0088] One opening of the tubular sheet CL corresponds to the end face 15 (seal portion 30) of the packaging bag 10 when closed (Figures 7 and 13). The other opening of the tubular sheet CL forms the end face 16 (seal portion 40) of the packaging bag 10 when closed (Figures 8 and 14).

[0089] In the method for manufacturing the packaging bag according to this embodiment, only a paper base material 10A is used for the packaging bag 10, and the seal portions 30, 40, and 50 of the packaging bag 10 are bonded with hot melt adhesives G1, G2, and G3, thereby obtaining a sanitary tissue packaging body similar to the sanitary tissue packaging body 100 described above, and obtaining the same effects as the sanitary tissue packaging body 100 described above.

[0090] In other words, according to the manufacturing method of the packaging bag according to this embodiment, a hygienic tissue paper packaging body 100 can be obtained using a paper packaging bag 10 in which no resin is used in the base material 10A. Therefore, the hygienic tissue paper packaging body 100 obtained by the manufacturing method of this embodiment can contribute to reducing plastic use.

[0091] Furthermore, in the manufacturing method of the packaging bag according to this embodiment, the seal portions 30, 40, and 50 are formed when the hot melt adhesives G1, G2, and G3 are applied to the paper base material 10A that constitutes the packaging bag 10. Therefore, the sanitary tissue paper packaging body 100 obtained by the manufacturing method of this embodiment can be given high adhesion to the seal portions 30, 40, and 50 of the packaging bag 10, even if the packaging bag 10 used as the base material 10A is a paper packaging bag 10 that does not use any resin and has no flexibility.

[0092] Furthermore, in the method for manufacturing the packaging bag according to this embodiment, since the packaging bag 10 that constitutes the resulting sanitary tissue packaging 100 is a paper packaging bag 10 that does not use any resin in the base material 10A, when forming the seal portions 30, 40, and 50 of the packaging bag 10, the melted resin does not adhere to the sanitary tissue (four sheet rolls 20) that contain it. Therefore, in the resulting sanitary tissue packaging 100, the sanitary tissue (four sheet rolls 20) does not adhere to the seal portions 30, 40, and 50 of the packaging bag 10. [Examples]

[0093] The present invention will be described in more detail below with reference to examples. The examples and comparative examples were evaluated by the following tests.

[0094] [Test specimen] As test specimens, we prepared sanitary tissue paper packaging consisting of four sheet rolls wrapped in caramel-wrapped packaging bags (Figures 1-8). The sheet rolls used were commercially available roll-type toilet paper (Daio Paper Corporation, Elleair Toilet Tissue, 60m, single, 147g / roll).

[0095] [Yonetsubo] The basis weight (grammage) of the test specimens was measured in accordance with the provisions of JIS P 8124 (2011). The unit of basis weight is "g / m²". 2 "

[0096] [Paper component (ratio)] For the test specimens, the percentage of paper components in the packaging bag's base material was calculated.

[0097] [Side seal adhesion] The adhesion of the side seals on the test specimens was evaluated. The evaluation was as follows: if the side seals did not peel off when the test specimen was compressed by hand from the top and bottom of the packaging bag, it was rated as A (good); if the side seals tore or did not adhere, it was rated as B (poor).

[0098] [Roll adhesion of side seals] The roll adhesion properties of the side seals were evaluated for each test specimen. The evaluation was as follows: if the side seal did not stick to the sheet roll when peeled off, it was rated A (good); if it stuck to the sheet roll, it was rated B (poor).

[0099] [Adhesion of bottom seal] The adhesion of the bottom seal was evaluated for each test specimen. The evaluation involved compressing the test specimen by hand from the top and bottom of the packaging bag. If the bottom seal did not peel off, it was rated as A (good); if the bottom seal tore or did not adhere, it was rated as B (poor).

[0100] [Roll adhesion of bottom seals] The roll adhesion properties of the bottom seal were evaluated for each test specimen. The evaluation was as follows: if the bottom seal did not stick to the sheet roll when peeled off, it was rated A (good); if it stuck to the sheet roll, it was rated B (poor).

[0101] [Tear in packaging bag] The test specimen was compressed by hand from the top and bottom of the packaging bag to check if the bag would tear. The evaluation was as follows: if the packaging bag did not tear, it was rated A (good); if packaging bag 10 did not tear but lacked flexibility, it was rated B (slightly poor); and if the packaging bag tore, it was rated C (poor).

[0102] The materials used in the examples and comparative examples will be described below.

[0103] [Example 1] The packaging bag is made of a paper base material (basis weight 40g / m²). 2The packaging bag was constructed using only 100% single-sided glossy kraft paper, and the seals (bottom seal and side seal) of the packaging bag were bonded with hot melt adhesive. The hot melt adhesive was sprayed in a spiral pattern. The composition, packaging conditions, and evaluation of Example 1 are shown in Table 1.

[0104] [Comparative Example 1] Base material with a basis weight of 30 g / m² 2 Using rayon paper, a resin layer (basis weight 20.5 g / m²) is applied to both sides of the base material. 2 A three-layer packaging bag was created using low-density polyethylene with a thickness of 11 μm. The seals (bottom seal and side seal) of the packaging bag were heat-sealed. The composition, packaging conditions, and evaluation of Comparative Example 1 are shown in Table 1.

[0105] [Comparative Example 2] Base material 10A with a basis weight of 30 g / m² 2 Using kraft paper, a resin layer (basis weight 27.9 g / m²) is applied to both sides of the base material. 2 Except for creating a three-layer packaging bag with a 15 μm thick low-density polyethylene layer, the test specimens were prepared and evaluated in the same manner as in Comparative Example 1. The composition, packaging conditions, and evaluation of Comparative Example 2 are shown in Table 1.

[0106] [Comparative Example 3] Base material 10A with a basis weight of 20g / m² 2 Using rayon paper, a resin layer (basis weight 10.2 g / m²) is applied to one side of the base material. 2 Except for creating a two-layer packaging bag with a low-density polyethylene layer (11 μm thick), the test specimens were prepared and evaluated in the same manner as in Comparative Example 1. The composition, packaging conditions, and evaluation of Comparative Example 3 are shown in Table 1.

[0107] [Comparative Example 4] Base material 10A with a basis weight of 30 g / m² 2 Using kraft paper, a resin layer (basis weight 27.9 g / m²) is applied to one side of the base material. 2 Except for creating a two-layer packaging bag with a 30 μm thick low-density polyethylene layer, the test specimens were prepared and evaluated in the same manner as in Comparative Example 2. The composition, packaging conditions, and evaluation of Comparative Example 4 are shown in Table 1.

[0108] [Table 1]

[0109] As shown in Table 1, the test specimen in which a packaging bag containing sanitary tissue paper (four sheet rolls) was constructed solely from a paper base material and the seal portion of the packaging bag was bonded with hot melt adhesive achieved the goal of 100% paper, and the adhesion of the side seals, the roll adhesion of the side seals, the adhesion of the bottom seals, the roll adhesion of the bottom seals, and the tear resistance of the packaging bag were all good (Example 1).

[0110] In contrast, none of the test specimens in Comparative Examples 1 to 4 were able to achieve the goal of 100% paper. Of these, the test specimens in Comparative Examples 3 and 4 had poor adhesion of the side seals, poor roll adhesion of the side seals, poor adhesion of the bottom seals, and poor roll adhesion of the bottom seals.

[0111] Although embodiments of the present invention have been described above, the present invention is not limited to any particular embodiment, and various modifications and changes are possible within the scope of the invention as described in the claims. [Explanation of Symbols]

[0112] 100 Sanitary tissue paper packaging 10 packaging bags 10A base material 11 Top surface 12. Base 13, 14 Side view 15, 16 End faces 20 sheet rolls 21 Long Sheet 21A Circumferential surface 21B, 21C side 22 Hollow core 30, 40 Seal section (side seal) 50. Seal section (bottom seal) OP opening 50. Seal section (bottom seal) L1 Length L2 Roll width W1 width W2 Roll Diameter H1 Height 60 sheets MD flow direction Direction perpendicular to the flow direction of CD 61 One end in the CD direction 62 The other end in the CD direction 63 One end in the MD direction 64 The other end in the MD direction 65 folds 65A tip 66 Folds 66A Tip 67 Folded pieces 67A Tip 68 Folding pieces 68A Tip

Claims

1. A sanitary tissue paper package in which sanitary tissue paper is contained in a packaging bag, The aforementioned packaging bag is composed solely of a paper base material. The aforementioned paper substrate is processed into a cylindrical shape, and the open end of the cylindrical substrate has a sealed portion that is folded and sealed. The sealing portion is bonded to the paper substrate by applying hot melt adhesive. Sanitary tissue paper packaging.

2. The hot melt adhesive is sprayed in a spiral pattern. The sanitary tissue paper packaging according to claim 1.

3. The hot melt adhesive comprises an olefin resin or synthetic rubber. A sanitary tissue paper packaging according to claim 1 or 2.

4. The aforementioned substrate has a basis weight of 30 g / m². ２ More than 100g / m ２ The following is: A sanitary tissue paper packaging according to any one of claims 1 to 3.

5. The aforementioned substrate is made of glossy paper on one side. A sanitary tissue paper packaging according to any one of claims 1 to 4.

6. The aforementioned packaging bag is caramelized, A sanitary tissue paper packaging according to any one of claims 1 to 5.

7. A method for manufacturing a sanitary tissue paper package in which sanitary tissue paper is contained in a packaging bag, The aforementioned packaging bag uses only a paper base material. The aforementioned paper substrate is processed into a cylindrical shape, and the open end of the cylindrical substrate is folded to form a sealed portion. The sealing portion is bonded to the paper substrate by applying hot melt adhesive. A method for manufacturing sanitary tissue paper packaging.

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