Sheet packaging body

Abstract

To provide a sheet packaging body with excellent takeout property of sheets.SOLUTION: A sheet packaging body has: a plurality of stacked sheets; a resin film-made packaging bag in which sheets are stored; and a sheet takeout port which is formed on a top surface by cleaving a cutting line for cleaving provided on the top surface of the packaging bag. The cutting line for cleaving has: a pair of first perforations which extend in a first direction of the packaging bag, are arranged in a second direction perpendicular to the first direction at a predetermined interval; a pair of second perforations which are continuous to ends of the first perforations and extend in a direction away from the first perforations, and in which an interval in the second direction becomes wider as it moves away from the first perforations; and a third perforation which is continuous to a middle part of the second perforations and extends between the second perforations in the second direction. The first perforations, a portion from the ends of the first perforation sto the middle part of the second perforations, and the third perforation are cleaved to form a flap at an end of the takeout port.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a sheet packaging body. [Background technology]

[0002] Sanitary thin paper such as tissue paper is commonly packed in thick paper boxes called cartons. However, carton-type sanitary thin paper is bulky when transporting or storing, and has problems such as disposal after use, environmental burden, and cost. Therefore, in recent years, there has been an increasing demand for sheet packages in which sheets of sanitary thin paper or the like are packed in flexible film packaging bags.

[0003] For example, Patent Document 1 discloses a film packaging body in which sanitary paper is contained in a flexible film packaging bag in which perforations are formed for removing the sanitary paper. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2016-188092 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in conventional film packaging, when sheets such as sanitary paper are removed from the packaging bag, the sheets tend to get stuck in the removal opening, making it difficult to remove. Also, the sheets held in the removal opening tend to fall over and come into contact with the packaging bag, which is unsanitary. When the number of sheets contained in the packaging bag decreases, the sheets tend to fall into the packaging bag, and the packaging bag tends to lift up when the sheets are removed. Thus, conventional film packaging has problems with the ease of removing sheets.

[0006] An object of the present invention is to provide a sheet packaging body that allows excellent sheet removal. [Means for solving the problem]

[0007] A first aspect of the present invention is a sheet packaging body having a plurality of stacked sheets, a packaging bag made of a resin film in which the sheets are contained, and an outlet for the sheets formed on the top surface by tearing a tearing score line provided on the top surface of the packaging bag, wherein the tearing score line extends in a first direction of the packaging bag and has a pair of first perforations arranged at a predetermined interval in a second direction perpendicular to the first direction, a pair of second perforations that are continuous with ends of the first perforations and extend in a direction away from the first perforations and whose interval in the second direction becomes wider as they move away from the first perforations, and a third perforation that is continuous with a middle portion of the second perforations and extends between the second perforations in the second direction, and a flap is formed at the end of the outlet by tearing the first perforations, a portion from the end of the first perforation to the middle portion of the second perforation, and the third perforation.

[0008] In the first embodiment, the first perforation, the portion from the end of the first perforation to the middle of the second perforation, and the third perforation are torn open, so that both ends of the outlet open in a divergent manner, thereby preventing the sheet from getting stuck at both ends of the outlet or being torn when the sheet is taken out.

[0009] In addition, by forming flaps at both ends of the outlet, the friction between the sheet and both ends of the outlet is reduced when the sheet is taken out, allowing the sheet to be taken out smoothly. Furthermore, when the sheet package is placed or hung so that the first direction is the up-down direction, even if the sheet is pulled out to one of the ends of the outlet, the friction between the sheet and the end of the outlet is reduced, allowing the sheet to be taken out smoothly.

[0010] In addition, by reducing the frictional force between the sheet and both ends of the outlet, even when there are fewer sheets stored, the sheet being pulled out is less likely to get caught in the outlet, thereby preventing the packaging bag from lifting up (hereinafter referred to as "the packaging bag lifting up").

[0011] In addition, the flaps formed at both ends of the outlet allow the flaps to bend under the weight of the sheet held in the outlet, thereby maintaining the sheet's holding force at the outlet, thereby preventing the sheet from falling into the packaging bag (hereinafter referred to as sheet falling).

[0012] Furthermore, the flaps formed on both ends of the outlet support the sheet at the outlet, making it difficult for the sheet held at the outlet to fall over. This prevents the sheet from coming into contact with the top surface, allowing the sheet to be used hygienically.

[0013] A second aspect of the present invention is the sheet packaging body according to the first aspect, wherein the third perforation curves in a direction away from the first perforation.

[0014] In the second embodiment, the third perforation is curved away from the first perforation, so that the flaps formed at both ends of the outlet make it easier for the sheet to be supported at the outlet, making it less likely for the sheet held at the outlet to tip over. This reliably prevents the sheet from coming into contact with the top surface, allowing the sheet to be used more hygienically.

[0015] A third aspect of the present invention is the sheet packaging body according to the first or second aspect, in which the angle between the first perforation and the second perforation is 100° or more and 160° or less. In the third aspect, by making the angle between the first perforation and the second perforation 100° or more and 160° or less, flaps can be formed at both ends of the outlet port, which support the sheet while reducing friction against the sheet and are easily bent under the weight of the sheet.

[0016] A fourth aspect of the present invention is the sheet packaging body according to any one of the first to third aspects, in which the corner between the first perforation and the second perforation is rounded. In the fourth aspect, the corner between the first perforation and the second perforation is rounded, so that the sheet is less likely to tear even if the pulled-out sheet comes into contact with the corner between the first perforation and the second perforation.

[0017] A fifth aspect of the present invention is the sheet packaging body according to any one of the first to fourth aspects, in which the tips of the second perforations are bent in an arc shape in a direction approaching each other. In the fifth aspect, the tips of the pair of second perforations are bent in an arc shape in a direction approaching each other, thereby shortening the bases of the flaps formed at both ends of the outlet. This increases the force of the flaps to support the sheet, making it more difficult for the sheet held in the outlet to fall over.

[0018] A sixth aspect of the present invention is the sheet packaging body according to any one of the first to fifth aspects, in which the ratio of the length of the outlet to the length of the top surface is 60% or more and 90% or less. In the sixth aspect, the ratio of the length of the outlet to the length of the top surface is 60% or more and 90% or less, so that an outlet of sufficient length for removing the sheet can be formed.

[0019] A seventh aspect of the present invention is the sheet packaging body according to any one of the first to sixth aspects, in which the ratio of the maximum width of the take-out opening to the width of the top surface is 20% to 50%. In the seventh aspect, by having the ratio of the maximum width of the take-out opening to the width of the top surface of the packaging bag be 20% to 50%, it is possible to form flaps at both ends of the take-out opening that support the sheet while reducing frictional force against the sheet and are easily bent under the weight of the sheet.

[0020] An eighth aspect of the present invention is the sheet packaging body according to any one of the first to seventh aspects, in which the ratio of the length of the flap to the length of the outlet is 10% to 40%. In the eighth aspect, by having the ratio of the length of the flap to the length of the outlet be 10% to 40%, it is possible to form flaps at both ends of the outlet that support the sheet while reducing frictional force against the sheet and are easily bent under the weight of the sheet.

[0021] A ninth aspect of the present invention is the sheet packaging body according to any one of the first to eighth aspects, in which the ratio of the distance from the middle part of one of the second perforations to the middle part of the other of the second perforations relative to the width of the flap is 5% or more and 40% or less. In the ninth aspect, the ratio of the distance from the middle part of one of the second perforations to the middle part of the other of the second perforations relative to the width of the flap is 5% or more and 40% or less, so that the flaps formed at both ends of the take-out opening support the sheet, reduce frictional force against the sheet, and are easily bent under the weight of the sheet. Effect of the Invention

[0022] According to one aspect of the present invention, a sheet packaging body having excellent sheet removal properties can be provided. [Brief description of the drawings]

[0023] [Figure 1] FIG. 2 is a perspective view showing the sheet wrapping body of the embodiment. [Diagram 2] FIG. 2 is a diagram showing the sheet wrapping body of the embodiment as viewed from the top surface. [Diagram 3] FIG. 4 is a diagram showing an outlet of the sheet packaging body according to the embodiment. [Figure 4] 1 is a diagram showing the sheet packaging body of the embodiment with its outlet opened; FIG. [Diagram 5] 1A and 1B are diagrams illustrating a state in which the sheet wrapping body of the embodiment is used. [Figure 6] 6 is a diagram showing the sheet wrapping body of FIG. 5 as viewed from the front side of the sheet wrapping body. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] The embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the same reference numerals will be used to designate parts common to the various drawings, and the description thereof may be omitted. In addition, the scale of each member in each drawing may differ from the actual scale in order to facilitate understanding.

[0025] In this specification, the directions of the drawings are described using a three-dimensional Cartesian coordinate system with three axial directions (X, Y, and Z). In each drawing, the X direction is the first direction of the sheet packaging body (left-right direction or the longitudinal direction of the sheet), the Y direction is the second direction of the sheet packaging body (front-back direction or the lateral direction of the sheet packaging body), and the Z direction is the up-down direction (height direction of the sheet packaging body).

[0026] In addition, in this specification, deviations in each direction are permitted to the extent that they do not impair the functions and effects of the embodiments. Furthermore, perpendicular may include substantially perpendicular.

[0027] Fig. 1 is a diagram showing a sheet packaging body of an embodiment. Fig. 2 is a diagram showing the sheet packaging body of an embodiment as viewed from the top. Fig. 3 is a diagram showing an outlet of the sheet packaging body of an embodiment. Fig. 4 is a diagram showing the outlet of the sheet packaging body of an embodiment after opening. Fig. 5 is a diagram showing a state in which the sheet packaging body of an embodiment is used. Fig. 6 is a diagram showing the sheet packaging body of Fig. 5 as viewed from the front side of the sheet packaging body.

[0028] 1, the sheet packaging body 100 of this embodiment has a sheet S, a packaging bag 10, and an outlet 20. The sheet packaging body 100 is an example of a sheet packaging body according to the present invention. The sheet S, the packaging bag 10, and the outlet 20 are examples of the sheet, the packaging bag, and the outlet that respectively constitute the sheet packaging body according to the present invention.

[0029] The sheets S are contained in a packaging bag 10 as a stack SL in which a plurality of sheets S are stacked. The stack SL of sheets S is contained in the packaging bag 10 such that the stacking direction of the sheets S is the height direction (Z direction). As shown in Figs. 4 and 5, the sheet stack SL is configured so that the sheets S can be pulled out one set at a time through a take-out opening 20 (opening 30) formed in the packaging bag 10.

[0030] The stack SL of sheets S is not limited to a simple stack of a plurality of sheets S, but may be a so-called pop-up type sheet stack in which each sheet S is stacked in a folded state, or in which each sheet S is folded and stacked alternately. From the viewpoint of pulling out the sheets S one by one, the stack SL of sheets S is preferably a stack SL that can be pulled out in a pop-up manner.

[0031] The dimensions of the stack SL of sheets S can be about 80 to 250 mm in the longitudinal direction (X direction) of the sheet wrapping body 100, about 50 to 130 mm in the depth direction (Y direction) perpendicular to the longitudinal direction (X direction) of the sheet wrapping body 100 when viewed from above, and about 30 to 1000 mm in the height direction (Z direction). Such a stack of tissue papers can be manufactured, for example, by a rotary or multi-stand interfolder.

[0032] The form of the sheet S is not particularly limited, and can be applied to sanitary thin papers such as paper towels, tissue paper, toilet paper, kitchen paper, etc. These sanitary thin papers also include sanitary thin papers containing moisturizing components (for example, lotion tissue, etc.). The use of the sheet S is also not particularly limited, and can be applied to any of industrial, household, and portable uses. The sheet packaging body 100 of the present embodiment is preferably used for household paper towels among these.

[0033] The number of plies of the sheet S is not particularly limited, but can be 1 or more, is preferably 1 ply (one layer), and is more preferably 2 plies (two layers). The shape of the sheet S is not particularly limited, but for example, it is preferable that the outline shape of the two-ply sheet when folded is rectangular. The material of the sheet 10A is not particularly limited, and may be, for example, paper, nonwoven fabric, or cloth, and is preferably tissue paper. When the sheet is tissue paper, the pulp composition may be a known composition for tissue paper. The blending ratio of pulp may be, for example, 50% by mass or more, preferably 90% by mass or more, and more preferably 100% by mass.

[0034] The basis weight of the sheet 10A is not particularly limited, but may be 5 g / m in the case of paper depending on the number of plies. 2 More than 80g / m 2 For non-woven fabrics, the limit is 20 g / m 2 More than 100g / m 2 The following is preferable. The basis weight is measured in accordance with the provisions of JIS P 8124 (2011).

[0035] The thickness of the sheet 10A is not particularly limited, and may be a paper thickness measured under the environment of JIS P 8111 (1998). For example, when the sheet is a thin paper, the thickness of the thin paper may be 50 μm or more and 500 μm or less per ply (two plies in the case of two plies), and is preferably 60 μm or more and 330 μm or less.

[0036] The sheet S may also be embossed. Such embossing may be performed by a known contact embossing or edge embossing method in which an embossing not shown is pressed against both sides of a sheet and both ends are laminated together, a known pin embossing method in which a pin not shown is pierced into a sheet to form a pin embossing on one side of the sheet, or a known embossing method in which a water-soluble adhesive (starch or the like) is heated and melted to bond laminated sheets together to form an embossing.

[0037] The packaging bag 10 is made of a resin film. The resin film constituting the packaging bag 10 is flexible. The resin used for the resin film is not particularly limited, and for example, resins such as polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), polyvinyl chloride (PVC), ethylene-vinyl acetate copolymer (EVA), polyamide (PA), etc. can be used. As the polyethylene, high density polyethylene, low density polyethylene, etc. can be used.

[0038] Among these, polyethylene, polypropylene, polyethylene terephthalate, etc. are preferred because they are flexible, easy to handle, have high sealability when heat sealed, and are inexpensive. Polyethylene is also preferred because it is odorless, has excellent water resistance and chemical resistance, and can be mass-produced at low cost. Polypropylene is also preferred because it is robust, easy to mold, has good color development when printed, and can be given a glossy finish.

[0039] In addition, the materials used to form the packaging bag 10 can be biodegradable materials (biodegradable plastics such as polylactic acid, etc.) and biomass materials (renewable organic resources derived from living organisms, such as biomass films, excluding fossil resources).

[0040] The form of the resin film forming the packaging bag 10 is not particularly limited, and may be a single-layer film formed of a single layer of the above-mentioned resin, a laminate film in which the above-mentioned resin is laminated, a film in which the above-mentioned resin is bonded or laminated with pulp paper or nonwoven fabric, or a mixed film formed from a mixture of two or more of the above-mentioned resins.

[0041] The thickness of the resin film forming the packaging bag 10 is not particularly limited, and is preferably 20 μm to 100 μm, more preferably 25 μm to 70 μm, and even more preferably 30 μm to 50 μm. By making the thickness of the resin film 20 μm or more, it is possible to ensure sufficient strength for the packaging bag 10 in which the sheet 10A is contained. Furthermore, by making the thickness of the resin film 100 μm or less, it is possible to ensure the flexibility and light weight of the packaging bag 10 and to reduce costs.

[0042] Furthermore, there is no particular limitation on the packaging form of the packaging bag 10. In this embodiment, for example, packaging in which both ends or either one end of a cylindrical resin film folded in a gusset shape are sealed (pillow packaging), packaging in which both ends of a cylindrical resin film are folded and sealed (caramel packaging), packaging in which a heat-shrinkable resin film is heated to make it adhere closely to the packaged object (shrink packaging), or a combination of these packaging forms can be used.

[0043] The thickness of the flexible film forming the packaging bag 10 is not particularly limited, and is preferably 20 to 100 μm, and more preferably 25 to 70 μm. By making the thickness of the flexible film 20 μm or more, sufficient strength for the packaging bag 10 in which the sheet S is contained can be ensured. Furthermore, by making the thickness of the flexible film 100 μm or less, flexibility and light weight of the container can be ensured, and costs can be reduced.

[0044] The packaging bag 10 has a top surface 11, a bottom surface 12, a front surface 13, a back surface 14, side surfaces 15, and side surfaces 16. In the packaging bag 10, as shown in Fig. 1, the top surface 11 and the bottom surface 12 face each other in the up-down direction (Z direction), the front surface 13 and the back surface 14 face each other in the front-rear direction (Y direction), and the side surfaces 15 and 16 face each other in the left-right direction (X direction). In addition, the side surfaces 15 and 16 are continuous with all of the top surface 11, the bottom surface 12, the front surface 13, and the back surface 14.

[0045] The outlet 20 is formed on the top surface 11 of the packaging bag 10. The outlet 20 is disposed in approximately the center of the top surface 11 of the packaging bag 10 in the longitudinal direction (X direction) of the sheet packaging body 100, and extends in a first direction (X direction). In this embodiment, the first direction (X direction) in which the outlet 20 extends corresponds to the longitudinal direction (X direction) of the sheet packaging body 100.

[0046] As shown in Figures 1 and 4, the take-out opening 20 is formed as an opening 30 on the top surface 11 of the packaging bag 10 by tearing a tear-open score line 20 provided on the top surface 11. The tear-open score line 20 is, for example, a perforation M. The perforation is an intermittent score line in which cuts and ties (uncut portions between two cuts) are arranged alternately, and when a tie is broken, the adjacent cuts on both sides become continuous cuts.

[0047] In the perforations, the length of the cut and the length of the tie are arbitrary. The length of each cut can be 1.0 mm or more and 5.0 mm or less, preferably 1.5 mm or more and 4.5 mm or less, and more preferably 2.5 mm or more and 3.5 mm or less. The length of each tie can be 0.3 mm or more and 5.0 mm or less, preferably 0.4 mm or more and 2.0 mm or less, and more preferably 0.5 mm or more and 1.5 mm or less.

[0048] The tearing cut line 20 has a pair of first perforations 21, 22, a pair of second perforations 23, 24 and 25, 26, and a third perforation 27, 28, as shown in Figs.

[0049] The first perforations 21, 22 extend in a first direction (X direction) of the packaging bag 10. The pair of first perforations 21, 22 are arranged at a distance D from each other in a second direction (Y direction) perpendicular to the first direction (X direction).

[0050] The pairs of second perforations 23, 24 and 25, 26 extend continuously from the ends 20A, 20B and ends 20C, 20D of the first perforations 21, 22 in a direction away from the first perforations 21, 22. The spacing between the pairs of second perforations 23, 24 and 25, 26 in the second direction (Y direction) becomes wider as they move away from the first perforations 21, 22.

[0051] Here, the direction away from the first perforations 21, 22 is the direction from the ends 20A, 20B of the first perforations 21, 22 toward the side 15 of the packaging bag 10, and the direction from the ends 20C, 20D of the first perforations 21, 22 toward the side 16 of the packaging bag 10.

[0052] The third perforations 27, 28 are continuous with the middle portions 23M, 24M and middle portions 25M, 26M of the second perforations 23, 24 and 25, 26. The third perforations 27, 28 extend between the second perforations 23, 24 and between the second perforations 25, 26 in the second direction (Y direction).

[0053] Here, the middle portions 23M, 24M and middle portions 25M, 26M of the second perforations 23, 24 and 25, 26 are in the range of 20% to 50% of the overall length of the second perforations 23, 24 and 25, 26, including the centers 23M, 24M and 25M, 26M of the second perforations 23, 24 and 25, 26.

[0054] Then, the first perforations 21, 22, the portions from ends 20A, 20B and ends 20C, 20D of the first perforations 21, 22 to the middle portions 23M, 24M and middle portions 25M, 26M of the second perforations 23, 24 and 25, 26, and the third perforations 27, 28 are torn off, thereby forming flaps 40, 50 at the ends 27 and 28 of the outlet 20 (opening 30).

[0055] The openings formed by the first perforations 21 and 22 are shaped like a long and narrow rectangle when viewed from the top. The openings formed by the second perforations 23, 24 and 25, 26, including intermediate portions 23M and 24M and intermediate portions 25M and 26M, and the third perforations 27 and 28 are shaped like a fan when viewed from the top.

[0056] Furthermore, the shape of the flaps 40, 50 formed is approximately fan-shaped corresponding to the opening formed by the portions of the second perforations 23, 24 and 25, 26 up to the intermediate portions 23M, 24M and intermediate portions 25M, 26M, and the third perforations 27, 28 being torn open.

[0057] Additionally, the third perforations 27, 28 are curved in a direction away from the first perforations 21, 22. Here, "the third perforation is curved in a direction away from the first perforation" means that the third perforation 27 is curved in a convex shape from the ends 20A, 20B of the first perforations 21, 22 toward the side surface 15 of the packaging bag 10, and the third perforation 28 is curved in a convex shape from the ends 20C, 20D of the first perforations 21, 22 toward the side surface 16 of the packaging bag 10.

[0058] In the sheet packaging body 100 of this embodiment, the angle θ between the first perforations 21, 22 and the second perforations 23, 24 and 25, 26 is preferably 100° or more and 160° or less, more preferably 100° or more and 155° or less, and even more preferably 100° or more and 150° or less. The angle between the first perforation and the second perforation indicates the angle between the first direction (X direction) in which the first perforation extends and the direction in which the second perforation extends away from the first perforation.

[0059] In the sheet packaging body 100 of this embodiment, it is preferable that the corners C1, C2, C3, and C4 between the first perforations 21, 22 and the second perforations 23, 24 and 25, 26 are rounded. Here, "rounded" means that the corners between the first perforations and the second perforations are arc-shaped curves.

[0060] In the sheet packaging body 100 of this embodiment, it is preferable that the tips 23C, 24C and 25C, 26C of the second perforations 23, 24 and 25, 26 are curved in an arc shape in a direction approaching each other. Here, the direction in which the tips of the second perforations approach each other refers to the direction in which the tips 23C, 24C of the second perforations 23, 24 face the second direction (Y direction) and the direction in which the tips 25C, 26C of the second perforations 25, 26 face the second direction (Y direction).

[0061] As shown in FIG. 3, the second perforations 23, 24, 25, 26 are composed of first bases 23A, 24A, 25A, 26A, second bases 23B, 24B, 25B, 26B, and tips 23C, 24C, 25C, 26C.

[0062] The first bases 23A, 24A and 25A, 26A constitute a part of the second perforations 23, 24 and 25, 26 from the ends 20A, 20B and ends 20C, 20D of the first perforations 21, 22 to the middle portions 23M, 24M and middle portions 25M, 26M. The second bases 23B, 24B and 25B, 26B constitute another part of the second perforations 23, 24 and 25, 26 from the middle portions 23M, 24M and middle portions 25M, 26M to the tips 23C, 24C and 25C, 26C.

[0063] 2, in the sheet packaging body 100 of this embodiment, the ratio of the length L2 of the take-out opening 20 to the length L1 of the top surface 11 of the packaging bag 10 is preferably 60% or more and 90% or less, more preferably 65% ​​or more and 85% or less, and further preferably 70% or more and 80% or less. Here, the length L1 of the top surface 11 of the packaging bag 10 and the length L2 of the take-out opening 20 are both lengths in the first direction (X direction) which is the longitudinal direction of the packaging bag 10.

[0064] 2, in the sheet packaging body 100 of this embodiment, the ratio of the maximum width W2 of the take-out opening 20 to the width W1 of the top surface 11 of the packaging bag 10 is preferably 20% to 50%, more preferably 25% to 45%, and even more preferably 28% to 40%. Here, the width W1 of the top surface 11 of the packaging bag 10 and the maximum width W2 of the take-out opening 20 are both widths in the second direction (Y direction) which is the width direction of the packaging bag 10.

[0065] In the sheet packaging body 100 of this embodiment, as shown in Figures 2 and 4, the ratio of the length L3 of the flaps 40, 50 to the length L2 of the outlet 20 is preferably 10% or more and 40% or less, more preferably 15% or more and 35% or less, and even more preferably 20% or more and 30% or less.

[0066] Here, the length L3 of the flaps 40, 50 is the maximum length of the portion surrounded by the second bases 23B, 24B and 25B, 26B of the second perforations 23, 24 and 25, 26 and the third perforations 27, 28. In addition, the length L2 of the outlet 20 and the length L3 of the flaps 40, 50 are both lengths in the first direction (X direction), which is the longitudinal direction of the packaging bag 10.

[0067] In the sheet packaging body 100 of this embodiment, as shown in Figures 2 and 4, the ratio of the distance W3 from the middle portion 23M, 25M of one second perforation 23, 25 to the middle portion 24M, 26M of the other second perforation 24, 26 to the width W2 of the flaps 40, 50 is preferably 5% or more and 40% or less, more preferably 8% or more and 35% or less, and even more preferably 10% or more and 30% or less.

[0068] Here, the width W2 of the flaps 40, 50 corresponds to the maximum width W2 of the take-out opening 20. Moreover, the width W2 of the flaps 40, 50 and the distance W3 from the middle parts 23M, 25M of the second perforations 23, 25 on one side to the middle parts 24M, 26M of the second perforations 24, 26 on the other side are all widths in the second direction (Y direction), which is the width direction of the packaging bag 10.

[0069] In the sheet packaging body 100 of this embodiment, as described above, the first perforations 21, 22, the portions from the ends 20A, 20B and ends 20C, 20D of the first perforations 21, 22 to the middle parts 23M, 24M and middle parts 25M, 26M of the second perforations 23, 24 and 25, 26, and the third perforations 27, 28 are torn, so that both ends 27, 28 of the take-out opening 20 (opening 30) open in a divergent manner. This makes it possible to prevent the sheet S from getting stuck at both ends 27, 28 of the take-out opening 20 (opening 30) or from being torn when the sheet S is taken out.

[0070] Specifically, first the third perforations 27, 28 tear, then the first bases 23A, 24A and 25A, 26A of the second perforations 23, 24 and 25, 26 tear, and then the first perforations 21, 22 tear, causing both ends 27, 28 of the outlet 20 (opening 30) to open in a flared manner.

[0071] In addition, after both ends 27, 28 of the outlet 20 (opening 30) open divergently, the second bases 23B, 24B, 25B, 26B and tips 23C, 24C, 25C, 26C of the second perforations 23, 24 and 25, 26 naturally tear open due to the resistance of pulling out the sheet S, forming flaps 40, 50 at both ends 27, 28 of the outlet 20 (opening 30). Therefore, there is no need to tear open the second bases 23B, 24B, 25B, 26B and tips 23C, 24C, 25C, 26C of the second perforations 23, 24 and 25, 26 to form the flaps 40, 50.

[0072] Furthermore, by forming the flaps 40, 50 at both ends 27, 28 of the outlet 20 (opening 30), friction between the sheet S and both ends 27, 28 of the outlet 20 (opening 30) is reduced when the sheet S is taken out, so that the sheet S can be taken out smoothly. Furthermore, when the sheet wrapping body 100 is placed or hung so that the first direction is the up-down direction, even if the sheet S is taken out toward either the end 27 or 28 of the both ends 27, 28 of the outlet 20 (opening 30), friction between the sheet S and the end 27 or 28 of the outlet 20 (opening 30) is reduced, so that the sheet S can be taken out smoothly.

[0073] In addition, by reducing the frictional force between the sheet S and both ends 27, 28 of the outlet 20 (opening 30), even if the amount of stored sheet S decreases, the sheet S being pulled out is less likely to get caught on the outlet 20 (opening 30), thereby preventing the packaging bag 10 from being lifted up.

[0074] In addition, the flaps 40, 50 formed on both ends 27, 28 of the outlet 20 (opening 30) allow the flaps 40, 50 to bend under the weight of the sheet S held in the outlet 20 (opening 30), thereby maintaining the holding force of the sheet S at the outlet 20 (opening 30), thereby preventing the sheet S from falling.

[0075] Furthermore, the sheet S is supported at the outlet 20 (opening 30) by the flaps 40, 50 formed at both ends 27, 28 of the outlet 20 (opening 30), making it difficult for the sheet S held at the outlet 20 (opening 30) to fall over. This prevents the sheet S from coming into contact with the top surface 11 of the packaging bag 10, allowing the sheet S to be used hygienically.

[0076] Furthermore, as described above, by curving the third perforations 27, 28 in a direction away from the first perforations 21, 22, the sheet S is more easily supported at the outlet 20 (opening 30) by the flaps 40, 50 formed at both ends 27, 28 of the outlet 20 (opening 30), making the sheet S held at the outlet 20 (opening 30) less likely to collapse. This reliably prevents the sheet S from coming into contact with the top surface 11 of the packaging bag 10, allowing the sheet S to be used more hygienically.

[0077] In the sheet packaging body 100 of this embodiment, as described above, the angle θ between the first perforations 21, 22 and the second perforations 23, 24 and 25, 26 is greater than or equal to 100° and less than or equal to 160°, so that flaps 40, 50 can be formed at both ends 27, 28 of the removal opening 20 (opening 30) that support the sheet S while reducing frictional force against the sheet S and are easily bent under the weight of the sheet S.

[0078] In addition, as described above, the corners C1, C2 and C3, C4 between the first perforations 21, 22 and the second perforations 23, 24 and 25, 26 are rounded, so that the sheet S is less likely to tear even if the pulled-out sheet S comes into contact with the corners C1, C2 and C3, C4 between the first perforations 21, 22 and the second perforations 23, 24 and 25, 26.

[0079] In the sheet packaging body 100 of this embodiment, as described above, the tips 23C, 24C and 25C, 26C of the pair of second perforations 23, 24 and 25, 26 are curved in an arc shape in a direction approaching each other, so that the bases 27B (42), 28B (52) of the flaps 40, 50 formed at both ends 27, 28 of the outlet 20 (opening 30) are shortened as shown in Fig. 4. Therefore, the force of the flaps 40, 50 to support the sheet S is increased, and the sheet S held at the outlet 20 (opening 30) is less likely to fall over.

[0080] Furthermore, as described above, by making the ratio of the length L2 of the outlet 20 to the length L1 of the top surface 11 of the packaging bag 10 greater than or equal to 60% and less than or equal to 90%, it is possible to form an outlet 20 that is long enough to take out the sheet S.

[0081] In the sheet packaging body 100 of this embodiment, as described above, the ratio of the maximum width W2 of the outlet 20 to the width W1 of the top surface 11 of the packaging bag 10 is 20% or more and 50% or less, so that flaps 40, 50 can be formed at both ends 27, 28 of the outlet 20 (opening 30) that support the sheet S while reducing the frictional force against the sheet S and are easily bent under the weight of the sheet S.

[0082] Furthermore, as described above, by setting the ratio of the length L3 of the flaps 40, 50 to the length L2 of the outlet 20 to be greater than or equal to 10% and less than or equal to 40%, the flaps 40, 50 can be formed at both ends 27, 28 of the outlet 20 (opening 30) to support the sheet S while reducing the frictional force against the sheet S and being easily bent under the weight of the sheet S.

[0083] In the sheet packaging body 100 of this embodiment, as described above, the ratio of the distance W3 from the middle portion 23M, 25M of one second perforation 23, 25 to the middle portion 24M, 26M of the other second perforation 24, 26 to the width W2 of the flaps 40, 50 is 5% or more and 40% or less, so that the flaps 40, 50 formed at both ends 27, 28 of the removal opening 20 (opening 30) support the sheet S while reducing the frictional force against the sheet S and becoming more easily flexible under the weight of the sheet S. EXAMPLES

[0084] The present invention will now be described in more detail with reference to the following examples. The examples and comparative examples were evaluated by the following tests.

[0085] [Sheet packaging (test specimen)] As a test specimen, a sheet package 100 was prepared in which a sheet laminate SL, in which a plurality of sheets S were laminated, was packaged in a packaging bag 10, as shown in Fig. 1. The sheet laminate SL is a paper towel (manufactured by Daio Paper Co., Ltd., Elleair Plus Kirei Compact Type, 2 ply, 200 sets, basis weight 14.5 g / m) in which the sheets S are folded alternately and stacked so that they can be pulled out one by one in a pop-up style. 2 , length of the sheet laminate SL: 186 mm, length of the packaging bag 10: 192 mm, thickness of the packaging bag: 40 μm) were used. The sheet laminate SL was placed in the packaging bag 10 so that the stacking direction was the height direction (Z direction) of the sheet packaging body 100. The packaging bag 10 was made of polyethylene (PE) with a thickness of 50 μm. The packaging bag 10 was packaged in a manner that both side surfaces 15 and 16 of the packaging bag 10 were sealed with pillow packaging. The dimensions of the sheet packaging body 100 were approximately 185 mm in the longitudinal direction (X direction), approximately 105 mm in the depth direction (Y direction), and approximately 40 mm in the height direction (Z direction). The top surface 11 of the packaging bag 10 was formed with an outlet 20 (perforation M) extending in the first direction (X direction), and the perforation was torn to form an opening 30.

[0086] [Extraction resistance value] The pull-out resistance value of the sheet packaging body 100 was confirmed. In the confirmation of the pull-out resistance value, the above-mentioned test body (sheet packaging body 100) was placed on a flat placement surface, about half of the first set of paper towels (sheets S) was pulled out from the outlet 20 (opening 30) of the packaging bag 10, and the upper end of the pulled-out sheet S (the central part in the longitudinal direction (X direction) of the sheet packaging body 100) was clamped with a clip (manufactured by KOKUYO Co., Ltd., "Cli-17"). A hook of a push-pull gauge (manufactured by IMADA Co., Ltd., model number: Z2-20) was passed through one hole of the handle part of the clip, and the resistance force (unit: N) was measured when the paper towels were pulled out vertically to the upper surface of the container at a constant speed over a period of 0.4 to 0.6 seconds. The evaluation criteria for the pull-out resistance value were as follows: if the resistance force when pulling out was 0.8 N or less, it was evaluated as good (sheet S was easy to remove), and if it exceeded 0.8 N, it was evaluated as not good (sheet S was difficult to remove).

[0087] [Sheet contact rate] The sheet contact rate of the sheet packaging body 100 was confirmed. The sheet contact rate was determined by measuring the percentage of the next sheet S held at the take-out opening 20 (opening 30) that fell over and contacted the top surface 11 of the packaging bag 10 until the first to last set of sheets S of the sheet stack SL contained in the packaging bag 10 of the sheet packaging body 100 were taken out through the opened take-out opening 20 (opening 30) of the packaging bag 10. The sheet contact rate was evaluated as good when it was less than 3% and as poor when it was 3% or more.

[0088] [Sheet drop rate] The sheet sagging rate of the sheet packaging body 100 was confirmed. The sagging rate was the percentage of the next sheet S held at the take-out opening 20 (opening 30) that sagged into the packaging bag 10 until the first set of sheets S of the sheet laminate SL was taken out through the take-out opening 20 (opening 30) of the packaging bag 10. A sagging rate of less than 5% was evaluated as good, and a rate of 5% or more was evaluated as poor.

[0089] [Pack lift rate] The pack lifting rate of the sheet packaging body 100 was checked. In checking the pack lifting rate, the percentage of the packaging bag 10 (pack) that was lifted when removing the first to last sets of sheets S of the sheet laminate SL through the removal opening 20 (opening 30) of the sheet packaging body 100 was checked. The pack lifting rate was evaluated as good when it was less than 5% and as poor when it was 5% or more.

[0090] Examples and comparative examples will be described below.

[0091] [Example 1] In the sheet packaging body 100 (test specimen), as shown in FIG. 2, the ratio of the length L2 of the take-out opening 20 to the length L1 of the top surface 11 of the packaging bag 10 is 76%, the ratio of the maximum width W2 of the take-out opening 20 to the width W1 of the top surface 11 of the packaging bag 10 is 30%, the ratio of the length L3 of the flaps 40, 50 to the length L2 of the take-out opening 20 is 21%, and the ratio of the width W2 of the curved portions 41, 51 to the width W2 of the flaps 40, 50 (from the middle portions 23M, 25M of the second perforations 23, 25 on one side to the width W3 of the other side) is 10%. The outlet 20 was formed on the top surface 11 of the packaging bag 10, with a ratio of W3 (distance to the middle parts 24M, 26M of the second perforations 24, 26) of 29%, an angle between the first direction (X direction) of the outlet 20 and the side edge of the flap 40, 50 (direction in which the second perforations 23, 24 and 25, 26 extend) of 140°, a maximum width W2 of the outlet 20 of 35 mm, and a minimum width D of the outlet 20 (distance between the first perforations 21 and the first perforations 22 in the second direction (Y direction)) of 5 mm. The test specimen was evaluated for pull-out resistance, sheet contact rate, sheet drop rate, and pack lift rate. The results are shown in Table 1.

[0092] [Example 2] Except for the ratio of the length L3 of the flaps 40, 50 to the length L2 of the outlet 20 being 24%, the outlet 20 was formed and the test specimen was evaluated in the same manner as in Example 1. The results are shown in Table 1.

[0093] [Example 3] Except for the ratio of the width W3 of the curved portions 41, 51 to the width W2 of the flaps 40, 50 being 14%, the outlet 20 was formed and the test specimen was evaluated in the same manner as in Example 1. The results are shown in Table 1.

[0094] [Example 4] The ratio of the maximum width W2 of the outlet 20 to the width W1 of the top surface 11 of the packaging bag 10 was 37%, the ratio of the width W3 of the curved portions 41, 51 to the width W2 of the flaps 40, 50 was 23%, the angle between the first direction (X direction) of the outlet 20 and the side edges of the flaps 40, 50 was 100°, and the maximum width W2 of the outlet 20 was 43 mm. Except for this, the outlet 20 was formed and the test specimen was evaluated in the same manner as in Example 1. The results are shown in Table 1.

[0095] [Comparative Example 1] Except that only a linear slit was formed as the outlet 20 and the minimum width D of the outlet 20 was 0 mm, an outlet 20 was formed and the test specimen was evaluated in the same manner as in Example 1. The results are shown in Table 1.

[0096] [Comparative Example 2] Except for the ratio of the maximum width W2 of the outlet 20 to the width W1 of the top surface 11 of the packaging bag 10 being 4%, the maximum width W2 of the outlet 20 being 5 mm, and the width W2 in the second direction (Y direction) being 5 mm, the outlet 20 was formed and the test specimen was evaluated in the same manner as in Comparative Example 1. The results are shown in Table 1.

[0097] [Comparative Example 3] Except for the ratio of the width W3 of the curved portions 41, 51 to the width W2 of the flaps 40, 50 being 0%, the outlet 20 was formed and the test specimen was evaluated in the same manner as in Comparative Example 1. The results are shown in Table 1.

[0098] [Table 1]

[0099] As shown in Table 1, in Examples 1 to 4, the sheet packaging bodies in which the removal opening formed on the top surface of the packaging bag was formed by tearing the first perforation, the portion from the end of the first perforation to the middle of the second perforation, and the third perforation to form a flap at the end of the removal opening, all had good withdrawal resistance values, sheet contact rates, sheet sagging rates, and pack lift rates.

[0100] On the other hand, in Comparative Examples 1 to 3, in the sheet packaging body 100 in which the removal opening only had a linear slit or a long, thin slit, at least one of the withdrawal resistance value, sheet contact rate, sheet drop rate, and pack lift rate was not good.

[0101] Although an embodiment of the present invention has been described above, the present invention is not limited to a specific embodiment, and various modifications and changes are possible within the scope of the invention described in the claims. [Explanation of symbols]

[0102] 100 Sheet packaging ST Sheet (hygienic tissue paper) SL Sheet laminate 10 packaging bags 11 Top 12 Bottom 13 Front 14 Back 15 Side 16 Side 20 Outlet M Perforation 21, 22 1st perforation 20A, 20B, 20C, 20D End of the first perforation 23, 24, 25, 26 2nd perforation 23A, 24A, 25A, 26A 1st base 23B, 24B, 25B, 26B 2nd base 23C, 24C, 25C, 26C Tip 23M, 24M, 25M, 26M middle part 27, 28 3rd perforation (end) 27B, 28B base 30 aperture 40, 50 Flaps 41, 51, curved part 42, 52, base C1, C2, C3, C4 corner θ angle L1, L2, L3 Length W1, W2, W3 width D interval

Claims

1. A sheet packaging body comprising: a plurality of stacked sheets; a packaging bag made of a resin film in which the sheets are contained; and an opening for removing the sheets formed on the top surface by tearing a tearing score line provided on the top surface of the packaging bag, The cleavage score line is A pair of first perforations extending in a first direction of the packaging bag and arranged at a predetermined interval in a second direction perpendicular to the first direction; A pair of second perforations extending in a direction away from the first perforation continuously with the ends of the first perforation, and the spacing between the second perforations in the second direction becomes wider as the second perforation moves away from the first perforation; A third perforation is continuous with an intermediate portion of the second perforation and extends between the second perforations in the second direction, A sheet packaging body in which a flap is formed at the end of the removal opening by tearing the first perforation, the portion from the end of the first perforation to the middle portion of the second perforation, and the third perforation.

2. The sheet packaging body according to claim 1 , wherein the third perforation curves in a direction away from the first perforation.

3. The sheet packaging body according to claim 1 or 2, wherein an angle between the first perforation and the second perforation is equal to or greater than 100° and equal to or less than 160°.

4. The sheet packaging body according to claim 1 or 2, wherein a corner between the first perforation and the second perforation is rounded.

5. The sheet packaging body according to claim 1 or 2, wherein the tips of the second perforations are curved in an arc shape in a direction approaching each other.

6. The sheet packaging body according to claim 1 or 2, wherein a ratio of a length of the outlet port to a length of the top surface is 60% or more and 90% or less.

7. The sheet packaging body according to claim 1 or 2, wherein a ratio of a maximum width of the outlet port to a width of the top surface is 20% or more and 50% or less.

8. The sheet packaging body according to claim 1 or 2, wherein a ratio of a length of the flap to a length of the outlet port is 10% or more and 40% or less.

9. The sheet packaging body according to claim 1 or 2, wherein the ratio of the distance from the middle portion of one of the second perforations to the middle portion of the other of the second perforations relative to the width of the flap is 5% or more and 40% or less.

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