JP7427476B2 - Sheet packaging and method for manufacturing sheet packaging - Google Patents

Description

The present invention relates to a sheet package and a method for manufacturing a sheet package.

In sheet packaging bodies such as pocket tissues, sheets such as tissue paper are housed in a packaging bag made of resin film. A perforation or the like is formed on the top surface of the packaging bag, and by tearing the perforation, an outlet is formed on the top surface of the packaging bag. By inserting a fingertip into the packaging bag through this outlet and picking up the uppermost sheet, the sheet is pulled out to the outside (for example, see Patent Document 1).

JP2015-47270A

An object of the present invention is to provide a sheet package that can be used hygienically.

A first aspect of the present invention includes a packaging bag that accommodates a plurality of stacked sheets, and a perforation that extends in a first direction and forms an outlet on the top surface of the packaging bag, The top surface has an upper surface having a mountain fold line extending in the first direction, a lower surface having a valley fold line extending in the first direction, and the mountain fold line such that the top surface overlaps between a part of the upper surface and a part of the lower surface. The sheet packaging body has an intermediate surface connecting the line and the valley fold line, and the perforation is provided in at least one of a part of the lower surface or the intermediate surface.

In this specification, the first direction refers to a direction along one predetermined direction on the top surface of the packaging bag. The perforation forming the outlet indicates a perforation that, when cleaved, forms the opening of the outlet. The mountain fold line indicates a fold line that appears outward when viewed from the side surface in a direction perpendicular to the first direction. The valley fold line indicates a fold line that is hidden inward when viewed from the side surface in a direction perpendicular to the first direction.

The upper surface refers to a portion of the top surface located above the top surface. A part of the upper surface indicates a portion of the upper surface closer to the mountain fold line. The lower surface refers to a portion of the top surface located below the top surface. A part of the lower surface indicates a portion of the lower surface closer to the valley fold line. The intermediate surface refers to a portion of the top surface located between a portion of the upper surface and a portion of the lower surface.

In the first aspect, the mountain fold line and the valley fold line are connected such that the perforation forming the outlet on the top surface of the packaging bag overlaps between a part of the bottom surface or a part of the top surface and a part of the bottom surface. It can be provided on at least one of the intermediate surfaces. Thereby, the opening of the outlet after the perforation is torn can be covered with a part of the upper surface. Therefore, in the first aspect, it is difficult for dirt, dust, etc. (hereinafter referred to as dust) to enter the packaging bag from the outlet, and the sheet packaging body can be used hygienically.

Further, in the first aspect, by forming a perforation in at least one of a part of the lower surface or an intermediate surface connecting the mountain fold line and the valley fold line, a part of the upper surface of the top surface near the mountain fold line is formed. The perforation can be opened by pulling it above the top surface. Therefore, in the first aspect, it is easy to open the outlet.

In addition, in the first aspect, the perforation can be cleaved by simply pulling the part of the top surface near the mountain fold line above the top surface, so the packaging bag can be attached without pressing down on the top surface. You can open the exit. Therefore, according to the first aspect, it is possible to prevent the sheet from being torn or the stored state of the sheet from being disturbed when the outlet is opened.

Further, in the first aspect, the top surface has a mountain fold line, the bottom surface has a valley fold line, and the mountain fold line and the valley are arranged such that the intermediate surface overlaps between a part of the top surface and a part of the bottom surface. By connecting the broken lines, the outlet can form a rib structure. Thereby, the shape of the packaging bag is easily maintained even after the outlet is opened. Therefore, in the first aspect, the state of accommodation of the sheets within the packaging bag is unlikely to be disturbed, and the sheet packaging body can be used cleanly to the end.

A second aspect of the present invention is a sheet package, in which at least a portion of the perforations are linearly provided on a portion of the lower surface. In this specification, "at least a part of the perforations are provided in a straight line" means that all of the perforations are straight, and some of the perforations are straight and the other parts are curved. Indicates that it is another shape such as a shape.

In the second aspect, by providing at least a part of the perforation in a straight line in a part of the lower surface, after the perforation is cleaved, the part of the upper surface and the intermediate surface that connects to the mountain fold line of the upper surface and the perforation are formed along the perforation. The outlet can be covered with a portion cut from the lower surface and connected to the intermediate surface via the valley fold line. As a result, in the second aspect, it becomes even more difficult for dust to enter the packaging bag.

In a third aspect of the present invention, the sheet package is such that at least a portion of the perforation is linearly provided on the intermediate surface. In the third aspect, by providing at least a part of the perforation in a straight line in the intermediate surface that overlaps between the part of the upper surface and the part of the lower surface, the part is cut from the intermediate surface along the perforation and the valley fold line is formed. The part that connects to the lower surface through the can block dust entering along the lower surface in front of the outlet. As a result, in the third aspect, it becomes even more difficult for dust to enter the packaging bag.

In a fourth aspect of the present invention, the intermediate surface is configured such that at least a part of the perforation is convex from the mountain fold line side to the valley fold line side in a second direction intersecting the first direction. It is a sheet packaging body provided in. Here, the second direction that intersects with the first direction indicates a direction that is perpendicular to the first direction or a direction that intersects with the brace on the top surface of the packaging bag. Being convex from the mountain fold line side toward the valley fold line side means that it is formed in a convex shape in the direction from the mountain fold line to the valley fold line in plan view.

In the fourth aspect, at least a part of the perforation is provided on the intermediate surface so as to be convex from the mountain fold line side to the valley fold line side in the second direction intersecting the first direction, so that the upper surface of the top surface is When the part near the mountain fold line is pulled above the top surface, the perforation can be opened smoothly. Therefore, in the fourth aspect, it is possible to prevent the top surface from being torn around the outlet when the outlet is opened.

Further, in the fourth aspect, after the outlet is opened, the portion that is cut from the intermediate surface along the perforation and connected to the upper surface via the mountain fold line is free to extend from the upper surface while covering the outlet. By forming ends and pinching such free ends, the opening of the outlet can be widened. Therefore, in the fourth aspect, even if the ejection port is covered by a portion of the upper surface, the sheet can be easily taken out from the ejection port.

In a fifth aspect of the present invention, the lower surface is arranged such that at least a part of the perforation is convex from the valley fold line side to the mountain fold line side in a second direction intersecting the first direction. This is a sheet packaging provided in some parts. Here, being convex from the valley fold line side toward the mountain fold line side indicates that it is formed in a convex shape in the direction from the valley fold line to the mountain fold line in plan view.

In the fifth aspect, by providing at least a part of the perforation in a part of the lower surface so as to be convex from the valley fold line side to the mountain fold line side in the second direction intersecting the first direction, it is possible to An opening that expands in a convex shape from the valley fold line side toward the mountain fold line side can be formed on the lower surface. As a result, in the fifth aspect, it becomes easier to insert the fingertip into the packaging bag from the outlet, and it becomes easier to take out the sheet.

A sixth aspect of the present invention is a sheet package in which at least a portion of the perforations are provided in an arc shape. In the sixth aspect, by providing at least a portion of the perforation in an arc shape, at least a portion of the perforation becomes convex from the mountain fold line side to the valley fold line side in the second direction intersecting the first direction. When the perforation is provided on the intermediate surface as shown in FIG.

Further, in the sixth aspect, after the outlet is opened, the portion that is cut from the intermediate surface along the perforation and connected to the upper surface via the mountain fold line is cut from the upper surface so that it becomes an arc-shaped free end. It can be extended. As a result, in the sixth aspect, the arc-shaped free end becomes easier to pinch and the opening of the outlet is expanded, so that even if the outlet is covered by a part of the upper surface near the mountain fold line, the outlet can be easily grasped. It becomes easier to take out the sheets.

Furthermore, in the sixth aspect, when at least a part of the perforation is provided on a part of the lower surface so as to be convex from the valley fold line side to the mountain fold line side in the second direction intersecting the first direction, the lower surface The edge of the opening that is formed in the opening and expands convexly from the valley fold line side to the mountain fold line side in plan view can be shaped into an arc. Thereby, in the sixth aspect, it becomes easy to insert the fingertip into the packaging bag from the outlet.

A seventh aspect of the present invention is a method for manufacturing a sheet packaging body, comprising a packaging bag that accommodates a plurality of stacked sheets, and a perforation that forms an outlet on the top surface of the packaging bag. , a perforation forming step of forming perforations in the film extending in the stretching direction of the film, and along mountain fold lines extending in the stretching direction and valley fold lines extending in the stretching direction in parallel with orthogonal directions orthogonal to the stretching direction. and a film folding step of folding the film, and in the perforation forming step, the perforation after folding the film is arranged between the mountain fold line and the valley fold line in plan view. , a method for manufacturing a sheet package, in which the perforations are formed.

In this specification, the stretching direction of a film indicates the direction in which resin is flowed (flow direction) in resin molding of a film or the like. The orthogonal direction refers to a direction orthogonal to the stretching direction. In the seventh aspect, perforations extending in the stretching direction of the film are formed in the film so that the perforations after folding the film are arranged between the mountain fold line and the valley fold line in plan view. It is possible to provide a sheet package according to the above aspect.

That is, in the seventh aspect, in the obtained sheet packaging body, the perforation forming the outlet on the top surface of the packaging bag overlaps between a part of the bottom surface or a part of the top surface and a part of the bottom surface. It can be provided on at least one of the intermediate surfaces connecting the mountain fold line and the valley fold line. In such a sheet package, the opening of the outlet after the perforation is torn can be covered with a part of the upper surface. Therefore, according to the seventh aspect, it is possible to provide a sanitary sheet package in which dust does not easily enter the packaging bag from the outlet.

In the seventh aspect, in the sheet package obtained, at least one of the intermediate surfaces connecting the mountain fold line and the valley fold line overlaps between a part of the lower surface or a part of the upper surface and a part of the lower surface. Alternatively, perforations can be formed on the top surface of the packaging bag to form an outlet. In such a sheet package, the perforations can be torn by pulling a portion of the upper surface of the top surface closer to the mountain fold line above the top surface. Therefore, according to the seventh aspect, it is possible to provide a sheet package whose outlet is easy to open.

In addition, in the seventh aspect, in the obtained sheet packaging body, the perforations can be torn by simply pulling the part of the top surface near the mountain fold line above the top surface. The outlet can be opened without pressing the surface. Therefore, according to the seventh aspect, it is possible to provide a sheet package that can prevent the sheet from being torn or the state of accommodation of the sheet from being disturbed when the outlet is opened.

Furthermore, in the seventh aspect, the obtained sheet package has a mountain fold line on the top surface, a valley fold line on the bottom surface, and the intermediate surface is between a part of the top surface and a part of the bottom surface. By connecting the mountain fold line and the valley fold line so as to overlap, the outlet can form a rib structure. This makes it easier for the packaging bag to maintain its shape even after the outlet is opened. Therefore, in the seventh aspect, it is possible to provide a sheet packaging body that does not easily disturb the accommodation state of the sheets in the packaging bag and can be used cleanly until the end.

According to one aspect of the present invention, it is possible to provide a sheet package that can be used hygienically.

It is a figure showing the sheet package concerning a 1st embodiment. FIG. 2 is a diagram showing a sheet stack housed in the sheet package of FIG. 1. FIG. FIG. 2 is a view of the sheet package of FIG. 1 viewed from the top side. FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3. FIG. 4 is a diagram showing the perforations in FIG. 3 being cleaved (the outlet is open). FIG. 5 is a diagram showing the perforations in FIG. 4 cleaved (the outlet is open). FIG. 5 is a sectional view (a sectional view corresponding to FIG. 4) of a sheet package according to a second embodiment. FIG. 8 is a diagram showing the perforations in FIG. 7 cleaved (the outlet is open). FIG. 4 is a view (corresponding to FIG. 3) of a sheet package according to a third embodiment when viewed from the top side. FIG. 10 is a diagram showing the perforations in FIG. 9 cleaved (the outlet is open). It is a flowchart which shows an example of the manufacturing method of the sheet package concerning a 1st embodiment. It is a figure which shows the perforation formation process in FIG. It is a figure which shows the film folding process in FIG. It is a figure which shows the sealing process in FIG. It is a figure which shows the cutting process in FIG. It is a figure which shows the perforation formation process in the manufacturing method of the sheet package concerning 2nd Embodiment. It is a figure which shows the perforation formation process in the manufacturing method of the sheet package concerning 3rd Embodiment. It is a figure which shows the perforation formation process in the manufacturing method of the sheet package based on the 1st modification of 3rd Embodiment. It is a figure which shows the perforation formation process in the manufacturing method of the sheet package based on the 2nd modification of 3rd Embodiment. It is a figure which shows the perforation formation process in the manufacturing method of the sheet package concerning 4th Embodiment.

Embodiments of the present invention will be described in detail with reference to the drawings. In each figure, unless otherwise specified, the same or corresponding components may be denoted by the same reference numerals and the description thereof may be omitted. Further, in each figure, the scale of each member may be different from the actual scale.

In each figure, a three-dimensional orthogonal coordinate system with three axes (X direction, Y direction, Z direction) is used, the longitudinal direction of the sheet package is the X direction, the width direction is the Y direction, and the height direction ( (vertical direction) is defined as the Z direction. In addition, the upper side indicates the upper side of the top surface of the packaging bag in the height direction (Z direction) of the sheet packaging body, and the bottom side indicates the top side of the packaging bag in the height direction (Z direction) of the sheet packaging body. Showing the bottom side.

FIG. 1 is a diagram showing a sheet package according to the first embodiment. FIG. 2 is a diagram showing a sheet stack housed in the sheet package of FIG. 1. FIG. 3 is a diagram of the sheet package shown in FIG. 1 viewed from the top side. FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3. FIG. 5 is a diagram in which the perforation in FIG. 3 is opened (the outlet is open). FIG. 6 is a diagram in which the perforation in FIG. 4 is opened (the outlet is open).

The sheet packaging body 100 according to the first embodiment has a packaging bag 10 and a perforation PF, as shown in FIG. The sheet package 100 is an example of a sheet package according to the embodiment. The perforation PF is an example of a perforation that forms an outlet in the sheet package according to the embodiment.

As shown in FIG. 1, the packaging bag 10 accommodates a plurality of stacked sheets (or a plurality of sets) of sheets S (hereinafter referred to as sheet laminate SL). The sheet laminate SL is housed in the packaging bag 10 so that the stacking direction (LD direction) of the sheets S is the height direction (Z direction) (see FIGS. 1 and 2). The sheet stack SL is configured such that the sheets S can be pulled out one by one (or one set at a time) through an outlet 20 (opening OP) formed in the packaging bag 10 (see FIGS. 5 and 6).

The form of the sheet laminate SL is not particularly limited, and for example, the sheets S may be folded and stacked so that the edges E of the sheets S can be pinched together (see FIG. 2), or each sheet S may be folded. It is possible to adopt a structure in which sheets S are stacked alternately (a so-called pop-up sheet stack), a structure in which a plurality of sheets S are simply stacked on top of each other, or the like.

In addition, the dimensions of the sheet laminate SL are such that the length of the sheet package 100 in the longitudinal direction (X direction) is 80 mm or more and 195 mm or less, and the width direction (Y direction) perpendicular to the longitudinal direction (X direction) of the sheet package 100 is 80 mm or more and 195 mm or less. ) can be 50 mm or more and 145 mm or less, and the height in the height direction (Z direction) can be 5 mm or more and 80 mm or less (see FIG. 2).

Note that the form of the sheet laminate SL is not particularly limited. For example, one sheet (or one set) is Z-folded, the upper and lower folded edges are each folded in half, and the sheet is further folded in half at the center in the longitudinal direction, and then stacked. be able to.

The aspect of the sheet S constituting the sheet laminate SL is not particularly limited, and can be applied to sanitary thin paper such as tissue paper, toilet paper, kitchen paper, and paper towel, for example. These sanitary thin papers also include sanitary thin papers containing moisturizing ingredients (for example, lotion tissues, etc.). Furthermore, these sanitary thin papers may contain an aqueous solution such as alcohol or sodium hypochlorite, a fragrance such as an aromatic, a chemical such as a deodorant, and the like.

Further, the use of the sheet S is not particularly limited, and can be applied to any of industrial, household, and portable uses. Note that among these sheets, household and portable lotion tissues are preferably used as the sheet in this embodiment.

The number of plies of the sheet S is not particularly limited, and can be one or more, preferably one ply, and more preferably two plies (two sheets stacked). Further, the shape of the sheet S is not particularly limited, and for example, it is preferable that the shape of the two-ply sheet in a folded state is a quadrilateral (rectangle, square, etc.) in plan view.

The material of the sheet S is not particularly limited, and for example, a sheet of paper, nonwoven fabric, or cloth can be used, and preferably a sheet made of paper (hereinafter referred to as a paper sheet). Note that when the sheet S is a paper sheet, a base paper whose main raw material is pulp is used. As the pulp composition, a known composition for paper sheets can be used. For example, the blending ratio of pulp can be 50% by mass or more, preferably 90% by mass or more, and more preferably 100% by mass.

Further, the pulp composition in the sheet S (paper sheet) is not particularly limited. For example, softwood pulp such as NBKP (softwood kraft pulp) or NUKP (softwood unbleached pulp) and hardwood pulp such as LBKP (hardwood kraft pulp) or LUKP (hardwood unbleached pulp) can be used in any ratio. Can be done. Note that the ratio of softwood pulp to hardwood pulp is not limited, and is preferably 10:90 to 80:20, more preferably a pulp composition in which the ratio of softwood pulp to hardwood pulp is higher. Furthermore, waste paper pulp may be used as the pulp contained in the sheet S (paper sheet).

The basis weight of the sheet S is not particularly limited, but depending on the number of plies, it is 5 g/m ² or more and 80 g/m ² or less in the case of paper, and 20 g/m ² or more and 100 g/m ² or less in the case of nonwoven fabric. desirable. Note that the basis weight can be measured in accordance with the regulations of JIS P 8124.

Further, the thickness of the sheet S (paper sheet) is not particularly limited, and a paper thickness measured under the environment of JIS P 8111 (1998) can be adopted. For example, the paper thickness of the sheet S (paper sheet can be 50 μm or more and 500 μm or less per 2 plies, preferably 60 μm or more and 330 μm or less, and more preferably 100 μm or more and 200 μm or less).

Further, the sheet S (paper sheet) may be embossed. Such embossing can be performed by a known embossing method.

The packaging mode of the packaging bag 10 is not particularly limited. In this embodiment, for example, packaging (pillow packaging) in which both ends or one end of a cylindrical flexible film folded into a gusset shape are sealed (pillow packaging), a cylindrical flexible film Adopt packaging in which both ends of the package are folded and sealed (caramel packaging), packaging in which a heat-shrinkable resin film is heated and tightly adhered to the packaged object (shrink packaging), or a combination of these. be able to.

In the sheet packaging body 100 of this embodiment, the seal portion 30 is arranged so that the sheet laminate SL is pillow-wrapped on a pair of side surfaces (end faces 15 and 16) facing each other in the first direction (X direction) of the packaging bag 10. , 40 are formed (see FIGS. 1 to 3). Here, the first direction (X direction) indicates a direction along a predetermined direction on the top surface 11 of the packaging bag 10 (see FIGS. 1 and 2).

The material of the flexible film forming the packaging bag 10 is not particularly limited, and examples include polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), and polyvinyl chloride (PVC). , ethylene-vinyl acetate copolymer (EVA), polyamide (PA), and the like can be used.

Among these flexible films, polyethylene, polypropylene, polyethylene terephthalate, and the like are preferred because they are flexible and easy to handle, have high sealability when heat-sealed, and are inexpensive. Further, polyethylene is preferred because it is odorless, has excellent water resistance and chemical resistance, and can be mass-produced at low cost. As the polyethylene, high density polyethylene, low density polyethylene, etc. can be used. Further, polypropylene is preferable from the viewpoints of being strong, easy to mold, showing good color development during printing, and being able to impart gloss.

The form of the flexible 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 formed by laminating the above-mentioned resins, or a laminate film formed of two or more of the above-mentioned resins. It may also be a mixed film formed from a mixture of resins.

The thickness of the flexible film forming the packaging bag 10 is not particularly limited, and is preferably 10 μm or more and 100 μm or less, more preferably 15 μm or more and 70 μm or less. By setting the thickness of the flexible film to 10 μm or more, sufficient strength as the packaging bag 10 in which the sheet S is accommodated can be ensured. Further, by setting the thickness of the flexible film to 100 μm or less, flexibility and lightness of the packaging bag 10 can be ensured, and costs can be suppressed.

Note that the material forming the packaging bag 10 is not limited to the above-mentioned resin material such as the flexible film, but may also be a paper material (kraft paper, etc.). In addition, the materials forming the packaging bag 10 include biodegradable materials (biodegradable plastic, biodegradable paper, etc.), biomass materials (renewable organic resources derived from living organisms such as biomass film, excluding fossil resources). ) can be used.

The packaging bag 10 also has a top surface 11, a bottom surface 12, a side surface (front) 13, a side surface (back) 14, a gable surface 15, and a gable surface 16. In the sheet package 100, the top surface 11 and the bottom surface 12 face each other in the vertical direction (Z direction), the side surfaces 13 and 14 face each other in the front-rear direction (Y direction), and the end surfaces 15 and 16 face each other in the left-right direction ( X direction). The end surfaces 15 and 16 are continuous with the top surface 11, the bottom surface 12, and the side surfaces 13 and 14 (see FIGS. 1, 3, and 4).

The dimensions of the packaging bag 10 are such that the length of the sheet packaging body 100 in the longitudinal direction (X direction) is 80 mm or more and 200 mm or less, and the width direction (Y direction) orthogonal to the longitudinal direction (X direction) of the sheet packaging body 100 is 80 mm or more and 200 mm or less. The width can be 50 mm or more and 150 mm or less, and the height in the height direction (Z direction) can be 5 mm or more and 50 mm or less (see FIGS. 1 and 4). Note that the dimensions of this packaging bag 10 indicate the dimensions when the sheet laminate SL is accommodated in the packaging bag 10 (see FIGS. 1 to 4).

The perforation PF extends in the first direction (X direction) and forms an outlet 20 on the top surface 11 of the packaging bag 10. Specifically, when the perforation PF is torn, an opening OP is formed in the top surface 11 of the packaging bag 10, and this opening OP becomes the outlet 20 (FIGS. 1, 3 to 6). Perforation PF is a tear line where cuts C and ties T (uncut parts between two cuts C) are arranged alternately, and when a tie T breaks, the cuts C on both sides become continuous cuts. (See Figure 3).

In the perforation PF, the length of the cut C and the length of the tie T are arbitrary. The length of each cut C can be 0.8 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. Further, the length of each tie T 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.

In the sheet packaging body 100 of this embodiment, the top surface 11 of the packaging bag 10 has an upper surface 50, a lower surface 60, and an intermediate surface 70. The upper surface 50 has a mountain fold line MF extending in the first direction (X direction). Specifically, the upper surface 50 extends in a second direction (Y direction) intersecting the first direction (X direction) from one end 51 connected to the side surface 14 of the packaging bag 10 to the other end 52 where the mountain fold line MF is provided. ) (see Figures 1, 3, and 4).

Here, the upper surface 50 indicates a portion of the top surface 11 disposed above the top surface 11. The first direction (X direction) indicates a direction along a predetermined direction on the top surface 11 of the packaging bag 10. The mountain fold line MF indicates a fold line that appears outward when viewed from the side surface 13 side in the second direction (Y direction) (see FIGS. 1, 3, and 4).

The lower surface 60 has a valley fold line VF extending in the first direction (X direction). Specifically, the lower surface 60 extends in the second direction (Y direction) from one end 61 connected to the side surface 13 of the packaging bag 10 toward the other end 62 where the valley fold line VF is provided (FIG. 1, 3, see Figure 4). Here, the lower surface 60 indicates a portion of the top surface 11 that is disposed on the lower side of the top surface 11. The valley fold line VF indicates a fold line that is hidden inside when viewed from the side surface 13 side in the second direction (Y direction) (see FIGS. 1, 3, and 4).

The intermediate surface 70 connects the mountain fold line MF and the valley fold line VF so as to overlap between a portion 53 of the upper surface 50 and a portion 63 of the lower surface 60. Specifically, the intermediate surface 70 has a base extending in the second direction (Y direction) from the mountain fold line MF provided at the other end 52 of the upper surface 50 toward the valley fold line VF provided at the other end 62 of the lower surface 60. 73 (see FIGS. 1, 3, and 4).

Here, a portion 53 of the upper surface 50 indicates a portion of the upper surface 50 closer to the mountain fold line MF, and a portion 63 of the lower surface 60 indicates a portion of the lower surface 60 closer to the valley fold line VF. The intermediate surface 70 indicates a portion of the top surface 11 located between a portion of the upper surface 50 and a portion 63 of the lower surface 60. In this embodiment, one end 71 of the intermediate surface 70 corresponds to the other end 52 (mountain fold line MF) of the upper surface 50, and the other end 72 of the intermediate surface 70 corresponds to the other end 62 (valley fold line VF) of the lower surface 60. (See FIGS. 1, 3, and 4).

In the sheet packaging body 100 of this embodiment, the perforation PF is provided on at least one of the part 63 of the lower surface 60 and the intermediate surface 70. That is, the perforation PF may be provided only on a portion 63 of the lower surface 60, may be provided only on the intermediate surface 70, or may be provided on both the portion 63 of the lower surface 60 and the intermediate surface 70. It's okay.

In the first embodiment, at least a portion of the perforation PF is linearly provided on a portion 63 of the lower surface 60. In this specification, "at least a part of the perforation PF is provided linearly" means that the entire perforation PF is linear, and a part of the perforation PF is linear and the other part is linear. indicates that it has another shape such as a curved shape. In this embodiment, all of the perforations PF are formed in a straight line only on a portion 63 of the lower surface 60 (see FIGS. 1, 3, and 4).

In the present embodiment, as described above, the perforation PF forming the outlet 20 on the top surface 11 of the packaging bag 10 is formed between a portion 63 of the lower surface 60 or a portion 53 of the upper surface 50 and a portion 63 of the lower surface 60. It can be provided on at least one of the intermediate surfaces 70 connecting the mountain fold line MF and the valley fold line VF so as to overlap therebetween (see FIGS. 1, 3, and 4).

Thereby, the opening OP of the outlet 20 after the perforation PF is torn can be covered with the part 53 of the upper surface 50. Therefore, in this embodiment, it is difficult for dirt, dust, etc. (hereinafter referred to as dust) to enter the packaging bag 10 from the outlet 20, and the sheet packaging body 100 can be used hygienically (FIGS. 5 and 6). reference).

Further, in the present embodiment, the upper surface 50 of the top surface 11 is formed with a perforation PF in at least one of the part 63 of the lower surface 60 or the intermediate surface 70 connecting the mountain fold line MF and the valley fold line VF. By pulling the part 53 near the mountain fold line MF above the top surface 11, the perforation PF can be cleaved. Therefore, in this embodiment, the outlet 20 can be opened easily (see FIGS. 1 and 3 to 6).

Furthermore, in the present embodiment, the perforation PF can be cleaved by simply pulling the part 53 of the top surface 50 of the top surface 11 near the mountain fold line MF above the top surface 11, so that the top surface of the packaging bag 10 The outlet 20 can be opened without pressing down the opening 11. Therefore, according to the present embodiment, it is possible to prevent the sheets S from being torn when the outlet 20 is opened and the accommodation state of the sheets S (the stacking state of the sheet stack SL) being disturbed (FIGS. 1, 3 to 3). (See Figure 6).

Furthermore, in this embodiment, the top surface 11 has a mountain fold line MF on the top surface 50 and a valley fold line VF on the bottom surface 60, and the intermediate surface 70 is formed between a portion 53 of the top surface 50 and a portion 63 of the bottom surface 60. By connecting the mountain fold line MF and the valley fold line VF so as to overlap in between, the outlet 20 can form a rib structure (overlapping part 80) (see FIGS. 1, 3, and 4).

Note that the superimposing section 80 is composed of three parts 81, 82, and 83 that overlap vertically. Of these, a portion 81 of the overlapping portion 80 corresponds to a portion 53 of the upper surface 50 , a portion 82 corresponds to the base 73 of the intermediate surface 70 , and a portion 83 corresponds to a portion 63 of the lower surface 60 .

Thereby, the shape of the packaging bag 10 is easily maintained even after the outlet 20 is opened. Therefore, in this embodiment, the accommodation state of the sheets S (the stacked state of the sheet laminate SL) is not easily disturbed in the packaging bag 10, and the sheet packaging body 100 can be used cleanly until the end (FIGS. 5 and 6). .

Further, in the first embodiment, as described above, by providing at least a part of the perforation PF (in this embodiment, the entire perforation PF) in a straight line on the part 63 of the lower surface 60, the perforation PF After cleavage, a part 53 of the upper surface 50, an intermediate surface 70 that connects to the mountain fold line MF of the upper surface 50, and a portion that is cut from the lower surface 60 along the perforation PF and connects to the intermediate surface 70 via the valley fold line VF ( The outlet 20 can be covered with the cut portion 63B) cut at the cleavage portion 63C, leaving the remaining portion 63A on the lower surface 60. As a result, in the first embodiment, it becomes even more difficult for dust to enter the packaging bag 10 (see FIG. 4).

FIG. 7 is a sectional view (a sectional view corresponding to FIG. 4) of a sheet package according to the second embodiment. FIG. 8 is a diagram in which the perforation in FIG. 7 is opened (the outlet is open).

In the sheet packaging body 100 according to the second embodiment, at least a portion of the perforation PF is provided linearly on the intermediate surface 70. In this embodiment, all of the perforations PF are formed linearly only on the intermediate surface 70 (see FIGS. 7 and 8). In the second embodiment, at least a portion of the perforation PF is linearly provided on the intermediate surface 70 that overlaps between a portion 53 of the upper surface 50 and a portion 63 of the lower surface 60 (see FIG. 7).

Therefore, a portion cut from the intermediate surface 70 along the perforation PF and connected to the lower surface 60 via the valley fold line VF (remaining portion 73A cut at the cleavage portion 73C, leaving the cut portion 73B connected to the upper surface 50) However, dust entering along the lower surface 60 can be blocked in front of the outlet 20. As a result, in the second embodiment, it becomes even more difficult for dust to enter the packaging bag 10 (see FIG. 8).

FIG. 9 is a view (corresponding to FIG. 3) of the sheet package according to the third embodiment as viewed from the top side. FIG. 10 is a diagram in which the perforation in FIG. 9 is opened (the outlet is open).

In the sheet packaging body 100 according to the third embodiment, a portion 21 of the perforation PF extends from the mountain fold line MF side to the valley fold line VF side in the second direction (Y direction) intersecting the first direction (X direction). It is provided on the intermediate surface 70 so as to be convex. Here, being convex from the mountain fold line MF side toward the valley fold line VF side means that it is formed in a convex shape in the direction from the mountain fold line MF to the valley fold line VF in plan view (see FIG. 9).

Further, in the sheet package 100 according to the third embodiment, a portion 22 of the perforation PF is from the valley fold line VF side to the mountain fold line MF side in the second direction (Y direction) intersecting the first direction (X direction). It is provided on a part 63 of the lower surface 60 so as to be convex toward the lower surface. Here, being convex from the valley fold line VF side toward the mountain fold line MF side means that it is formed in a convex shape in the direction from the valley fold line VF to the mountain fold line MF in plan view (see FIG. 9).

Further, in the sheet packaging body 100 according to the third embodiment, some of the perforations PF 21 and 22 are provided in an arc shape (see FIG. 9). Parts 21 and 22 of perforation PF are provided continuously.

In the third embodiment, as described above, the part 21 of the perforation PF is convex from the mountain fold line MF side to the valley fold line VF side in the second direction (Y direction) intersecting the first direction (X direction). By providing this on the intermediate surface 70 so that the perforation PF can be smoothly cleaved when the part 53 of the upper surface 50 of the top surface 11 near the mountain fold line MF is pulled above the top surface 11. . Therefore, in the third embodiment, it is possible to prevent the top surface 11 from being torn around the outlet 20 when the outlet 20 is opened (see FIGS. 9 and 10).

Further, in the third embodiment, after the outlet 20 is opened, a portion (cut portion 73B) that is cut from the intermediate surface 70 along the perforation PF and connected to the upper surface 50 via the mountain fold line MF is removed. A free end 21A extends from the upper surface 50 while covering the outlet 20, and by pinching such a free end, the opening OP of the outlet 20 can be expanded. Therefore, in the third embodiment, even if the outlet 20 is covered by the part 53 of the upper surface 50, S can be easily taken out from the outlet 20 (see FIGS. 9 and 10).

In the third embodiment, as described above, the part 22 of the perforation PF is convex from the valley fold line VF side to the mountain fold line MF side in the second direction (Y direction) intersecting the first direction (X direction). By providing the opening OP in a part 63 of the lower surface 60 so that the opening OP expands convexly from the valley fold line VF side toward the mountain fold line MF side in plan view, it is possible to form an opening OP in the lower surface 60. Thereby, in the third embodiment, it becomes easy to insert the fingertip into the packaging bag 10 from the outlet 20, and it becomes easy to take out the sheet S (see FIGS. 9 and 10).

In the third embodiment, as described above, by providing a portion 21 of the perforation PF in an arc shape, at least a portion of the perforation PF is arranged in the second direction (Y direction) intersecting the first direction (X direction). ) is provided on the intermediate surface 70 so as to be convex from the mountain fold line MF side to the valley fold line VF side. When the perforation PF is opened, the perforation PF can be opened more smoothly (see FIGS. 9 and 10).

Further, in the third embodiment, after the outlet 20 is opened, the portion that is cut from the intermediate surface 70 along the perforation PF and connected to the upper surface 50 via the mountain fold line MF is connected to the arc-shaped free end 21A. It can be made to extend from the upper surface 50 so that it becomes. As a result, in the third embodiment, the arcuate free end 21A becomes easier to pinch and the opening OP of the outlet 20 is expanded, so that the outlet 20 is covered by the portion 53 of the upper surface 50 closer to the mountain fold line MF. Even when the sheet S (sheet stack SL) is removed from the outlet 20, it becomes easier to take out the sheet S (sheet stack SL) (see FIGS. 9 and 10).

Furthermore, in the third embodiment, the part 22 of the perforation PF is configured to be convex from the valley fold line VF side to the mountain fold line MF side in the second direction (Y direction) intersecting the first direction (X direction). When provided on a part 63 of the lower surface 60, the edge 20A of the opening OP, which is formed on the lower surface 60 and expands convexly from the valley fold line VF side to the mountain fold line MF side in plan view, can be formed into an arc shape. . Thereby, in the third embodiment, it becomes easier to insert the fingertip into the packaging bag 10 from the outlet 20 (see FIGS. 9 and 10).

FIG. 11 is a flowchart illustrating an example of the method for manufacturing the sheet package according to the first embodiment. FIG. 12 is a diagram showing the perforation forming process in FIG. 7. FIG. 13 is a diagram showing the film folding process in FIG. 7. FIG. 14 is a diagram showing the sealing process in FIG. 7. FIG. 15 is a diagram showing the cutting process in FIG. 7.

The method for manufacturing a sheet package according to the first embodiment includes forming a packaging bag 10 that accommodates a plurality of stacked sheets S (sheet laminate SL) and an outlet 20 in the top surface 11 of the packaging bag 10. This is a method of manufacturing the above-described sheet package 100 having perforations PF. Specifically, as shown in FIG. 11, the process includes a perforation forming process S1, a film folding process S2, a web packaging process S3, a sealing process S4, and a cutting process S5.

In the perforation forming step S1, perforations PF extending in the stretching direction MD of the film FS are formed in the film FS. Here, the stretching direction MD of the film FS indicates the direction in which resin is flowed (flow direction) in resin molding of the film FS and the like. In this embodiment, the direction from the edge F1 to the edge F2 of the film FS is the stretching direction MD (see FIG. 12).

In the manufacturing method of this embodiment, in the perforation forming step S1, the film FS is provided with a mountain fold line MF extending in the stretching direction MD and a valley fold line VF extending in the stretching direction MD in line with the perpendicular direction TD. Then, as described later, the perforations PF are formed so that the perforations PF after folding the film FS are arranged between the mountain fold line MF and the valley fold line VF in plan view (see FIG. 12). Here, the orthogonal direction TD indicates a direction orthogonal to the stretching direction MD.

Specifically, when the line where the mountain fold line MF overlaps the film FS after folding the film FS as described later is defined as the imaginary line OL, the valley fold line VF and the imaginary line OL in the film FS before the film FS is folded. A perforation PF extending in the stretching direction MD is formed between them (see FIG. 12). Note that the perforation forming step S1 is an example of a perforation forming step in the method for manufacturing a sheet package according to the present embodiment.

In the film folding step S2, the film FS is folded along the mountain fold line MF and the valley fold line VF (see FIGS. 11 and 13). Specifically, the film FS is bent into a mountain fold along a mountain fold line MF extending in the stretching direction MD, and bent into a valley fold along a valley fold line VF which extends in the stretching direction MD in parallel with the mountain fold line MF and in the direction TD. .

As a result, in the folded state of the film FS, the perforation PF is arranged between the mountain fold line MF and the valley fold line VF in plan view (see FIG. 13). Note that the film folding step S2 is an example of a film folding step in the method for manufacturing a sheet package according to the present embodiment.

In the web packaging step S3, webs (sheet laminates SL) are arranged on the film FS at regular intervals in the stretching direction MD. Then, in the sealing step S4, the film FS is made into a cylinder shape in the orthogonal direction TD, and each web is packaged, and the portion where the web is not arranged is sealed along the orthogonal direction TD at constant intervals in the stretching direction MD. Note that the manner of sealing is not particularly limited, and for example, heat sealing HS (thermal welding) can be performed (see FIGS. 11 and 14).

In the cutting step S5, the portions sealed at regular intervals in the stretching direction MD are cut along the orthogonal direction TD using cutting lines CL (see FIGS. 11 and 15). Thereby, the sheet packaging body 100 of the first embodiment is obtained as a plurality of individual packaging bodies (see FIG. 15).

In the method for manufacturing a sheet package according to the first embodiment, the stretching direction MD of the film FS is such that the perforation PF after folding the film FS is arranged between the mountain fold line MF and the valley fold line VF in plan view. By forming perforations PF extending in the film FS, the sheet package 100 according to the first embodiment can be provided.

That is, in the method for manufacturing a sheet package according to the first embodiment, in the sheet package 100 obtained, the perforation PF forming the outlet 20 on the top surface 11 of the packaging bag 10 is located in the part 63 of the bottom surface 60 or in the sheet package 100. It can be provided on at least one of the intermediate surfaces 70 connecting the mountain fold lines MF and the valley fold lines VF so as to overlap between a portion 53 of the upper surface 50 and a portion 63 of the lower surface 60 (FIG. 1, FIG. 3, (See Figure 4).

In such a sheet package 100, the opening OP of the outlet 20 after the perforation PF is torn can be covered with a portion 53 of the upper surface 50. Therefore, according to the method for manufacturing a sheet package according to the first embodiment, it is possible to provide a hygienic sheet package 100 in which dust is difficult to enter into the packaging bag 10 from the outlet 20 (FIGS. 5 and 5). (see 6).

In addition, in the sheet package manufacturing method according to the first embodiment, in the sheet package 100 obtained, the part 63 of the lower surface 60 or the part 53 of the upper surface 50 is overlapped with the part 63 of the lower surface 60. A perforation PF that forms the outlet 20 on the top surface 11 of the packaging bag 10 can be formed in at least one of the intermediate surfaces 70 connecting the mountain fold line MF and the valley fold line VF (FIGS. 1 and 3). , see Figure 4).

In such a sheet package 100, when the part 53 of the upper surface 50 of the top surface 11 near the mountain fold line MF is pulled above the top surface 11, the perforation PF can be cleaved. Therefore, according to the method for manufacturing a sheet package according to the first embodiment, it is possible to provide a sheet package 100 whose outlet 20 is easy to open (see FIGS. 1 and 3 to 6).

In addition, in the sheet package manufacturing method according to the first embodiment, in the sheet package 100 obtained, simply pulling the part 53 of the top surface 50 of the top surface 11 near the mountain fold line MF above the top surface 11; Since the perforation PF can be torn, the outlet 20 can be opened without pressing the top surface 11 of the packaging bag 10. Therefore, according to the method for manufacturing a sheet package according to the first embodiment, it is possible to prevent the sheet S from being torn when the outlet 20 is opened, and to prevent the accommodation state of the sheet S (the stacked state of the sheet laminate SL) from being disturbed. (See FIGS. 1 and 3 to 6).

Furthermore, in the method for manufacturing a sheet package according to the first embodiment, the sheet package 100 obtained has a mountain fold line MF on the upper surface 50 of the top surface 11, a valley fold line VF on the lower surface 60, and a middle surface. By connecting the mountain fold line MF and the valley fold line VF so that 70 overlaps between a part 53 of the upper surface 50 and a part 63 of the lower surface 60, the outlet 20 forms a rib structure (overlapping part 80). (See Figures 1, 3, and 4).

Thereby, the shape of the packaging bag 10 is easily maintained even after the outlet 20 is opened. Therefore, in the method for manufacturing a sheet package according to the first embodiment, the sheet package is difficult to disturb in the accommodation state of the sheets S (the stacked state of the sheet laminate SL) in the packaging bag 10, and can be used cleanly until the end. 100 can be provided.

In addition, in the method for manufacturing a sheet package according to the first embodiment, as described above, at least a part of the perforation PF (in this embodiment, all of the perforation PF) is formed in a straight line on the part 63 of the lower surface 60. By providing the perforation PF, the part 53 of the upper surface 50 and the intermediate surface 70 connecting to the mountain fold line MF of the upper surface 50 are cut from the lower surface 60 along the perforation PF and are cut through the valley fold line VF. The outlet 20 can be covered by the portion connected to the intermediate surface 70 (the cut portion 63B cut at the cleavage portion 63C while leaving the remaining portion 63A on the lower surface 60). As a result, in the method for manufacturing a sheet package according to the first embodiment, a sheet package 100 is obtained in which dust is less likely to enter the packaging bag 10 (see FIG. 4).

FIG. 16 is a diagram showing a perforation forming step in the sheet packaging manufacturing method according to the second embodiment. In the method for manufacturing a sheet package according to the second embodiment, in the perforation forming step S1, a perforation PF extending in the stretching direction MD is formed between the mountain fold line MF and the valley fold line VF in the film FS before folding the film FS. (See Figure 16).

As a result, in the film folding step S2, after the film FS is folded along the mountain fold line MF and the valley fold line VF, the perforation PF is arranged between the mountain fold line MF and the valley fold line VF in plan view (Fig. 13 reference). Then, by performing the web packaging process S3, the sealing process S4, and the cutting process S5, the sheet packaging body 100 according to the second embodiment is obtained as a plurality of individual packaging bodies.

That is, according to the method for manufacturing a sheet package according to the second embodiment, at least a portion of the perforation PF is linear in the intermediate surface 70 that overlaps between the portion 53 of the upper surface 50 and the portion 63 of the lower surface 60. A sheet package 100 is obtained (see FIG. 7).

FIG. 17 is a diagram showing a perforation forming step in the sheet packaging manufacturing method according to the third embodiment. In the method for manufacturing a sheet package according to the third embodiment, in the perforation forming step S1, in the film FS before folding the film FS, between the mountain fold line MF and the virtual line OL, from the mountain fold line MF side to the valley fold line VF side. An arcuate perforation PF is formed that is convex in the orthogonal direction TD toward the surface (see FIG. 17).

As a result, in the film folding step S2, after the film FS is folded along the mountain fold line MF and the valley fold line VF, the perforation PF is arranged between the mountain fold line MF and the valley fold line VF in plan view (Fig. 17 reference). Then, by performing the web packaging step S3, the sealing step S4, and the cutting step S5, the sheet package 100 according to the third embodiment is obtained.

That is, according to the method for manufacturing a sheet package according to the third embodiment, a portion 21 of the perforation PF is formed from the mountain fold line MF side in the second direction (Y direction) intersecting the first direction (X direction). It is provided on the intermediate surface 70 so as to be convex toward the valley fold line VF side, and a part 22 of the perforation PF is on the valley fold line VF side in the second direction (Y direction) that intersects the first direction (X direction). A sheet package 100 is obtained in which perforations PF are provided on a part 63 of the lower surface 60 so as to be convex toward the mountain fold line MF side, and parts 21 and 22 of perforations PF are continuously provided (see FIG. 9). ).

FIG. 18 is a diagram showing a perforation forming step in the method for manufacturing a sheet package according to the first modification of the third embodiment. In the method for manufacturing a sheet package according to the first modification of the third embodiment, in the perforation forming step S1, in the film FS before folding the film FS, there is a gap between the mountain fold line MF and the imaginary line OL on the mountain fold line MF side. A trapezoidal perforation PF is formed that is convex in the orthogonal direction TD toward the valley fold line VF side (see FIG. 18).

Thereby, in the film folding step S2, after folding the film FS along the mountain fold line MF and the valley fold line VF, the perforation PF is arranged between the mountain fold line MF and the valley fold line VF in plan view (FIG. 18 reference). Then, by performing the web packaging step S3, the sealing step S4, and the cutting step S5, the sheet package 100 according to the first modification of the third embodiment is obtained.

That is, according to the method for manufacturing a sheet package according to the first modification of the third embodiment, the part 21 of the perforation PF is in the second direction (Y direction) intersecting the first direction (X direction). A second direction (Y direction) is provided on the intermediate surface 70 so as to be convex from the mountain fold line MF side to the valley fold line VF side, and a part 22 of the perforation PF intersects with the first direction (X direction). A sheet packaging body 100 is obtained in which a part 63 of the lower surface 60 is provided so as to be convex from the valley fold line VF side to the mountain fold line MF side, and parts 21 and 22 of perforations PF are continuously provided. It will be done.

FIG. 19 is a diagram showing a perforation forming step in a method for manufacturing a sheet package according to a second modification of the third embodiment. In the perforation forming step S1 in the method for manufacturing a sheet package according to the second modification of the third embodiment, in the film FS before folding the film FS, from IR to the virtual line between the mountain fold line MF and the virtual line OL An arcuate perforation PF is formed on the outside OR of the OL, convex in the orthogonal direction TD from the mountain fold line MF side to the valley fold line VF side (see FIG. 19).

As a result, in the film folding step S2, after folding the film FS along the mountain fold line MF and the valley fold line VF, the perforation PF is located between the mountain fold line MF and the valley fold line VF in the IR and virtual line OL in plan view. located in the outer OR (see FIG. 19). Then, by performing the web packaging step S3, the sealing step S4, and the cutting step S5, the sheet package 100 according to the second modification of the third embodiment is obtained.

That is, according to the method for manufacturing a sheet package according to the second modification of the third embodiment, the part 21 of the perforation PF is in the second direction (Y direction) intersecting the first direction (X direction). A second direction (Y direction) is provided on the intermediate surface 70 so as to be convex from the mountain fold line MF side to the valley fold line VF side, and a part 22 of the perforation PF intersects with the first direction (X direction). The part 63 of the lower surface 60 and the outer side of the lower surface 60 of the overlapping part 80 are provided so as to be convex from the valley fold line VF side to the mountain fold line MF side, and the parts 21 and 22 of the perforations PF are continuous. A sheet package 100 is obtained.

Note that in the sheet package 100 obtained by the method for manufacturing a sheet package according to the second modification of the third embodiment, a part of the outlet 20 (opening OP) after the perforation PF is torn is an overlapped portion. 80 on the outside of the lower surface 60 side. Then, a portion (free end 21A extending from the upper surface 50) that is cut from the intermediate surface 70 along the perforation PF and connected to the upper surface 50 via the mountain fold line MF is located outside the lower surface 60 side of the overlapping portion 80. The entire outlet 20 (opening OP) including a part of the formed outlet 20 (opening OP) can be covered.

FIG. 20 is a diagram showing a perforation forming step in the sheet packaging manufacturing method according to the fourth embodiment. In the method for manufacturing a sheet package according to the fourth embodiment, in the perforation forming step S1, in the film FS before folding the film FS, a perforation PFPM1 extending in the stretching direction MD between the mountain fold line MF and the valley fold line VF, PM2 is formed, and an arc-shaped perforation PF3 that is convex in the orthogonal direction TD from the mountain fold line MF side toward the valley fold line VF side is formed between PFPM1 and PM2 and the virtual line OL (Fig. 20 reference).

Thereby, in the film folding step S2, after folding the film FS along the mountain fold line MF and the valley fold line VF, the perforation PF is arranged between the mountain fold line MF and the valley fold line VF in plan view (Fig. 20 reference). Then, by performing the web packaging step S3, the sealing step S4, and the cutting step S5, the sheet package 100 according to the fourth embodiment is obtained.

That is, according to the method for manufacturing a sheet package according to the fourth embodiment, the perforations PF1 and PF2 are provided on the intermediate surface 70 that overlaps between the part 53 of the upper surface 50 and the part 63 of the lower surface 60, and the perforations PF3 A part 21 is provided on the intermediate surface 70 so as to be convex from the mountain fold line MF side toward the valley fold line VF side in the second direction (Y direction) intersecting the first direction (X direction), and the perforation A portion 22 of the PF3 is provided on a portion 63 of the lower surface 60 so as to be convex from the valley fold line VF side toward the mountain fold line MF side in the second direction (Y direction) intersecting the first direction (X direction). Thus, a sheet package 100 is obtained in which perforations PF1, PF2, and parts 21 and 22 of PF3 are continuously provided.

Although the embodiments of the present invention have been described above, the present invention is not limited to specific embodiments, and various modifications and changes can be made within the scope of the invention described in the claims. .

100 Sheet package S Sheet E Edge SL Sheet laminate LD Layering direction 10 Packaging bag 11 Top surface 12 Bottom surface 13, 14 Side surface 15, 16 End surface 20 Output port 20A Edge 21, 22 Part PF Perforation OP Opening 30 Seal portion 40 Seal portion 50 Top surface 51 One end 52 Other end 53 Part 60 Bottom surface 61 One end 62 Other end 63 Part 63A Remaining portion 63B Cut portion 63C Cleavage portion 70 Intermediate surface 71 One end 72 Other end 73 Base 73A Remaining portion 73B Cut portion 73C Cleavage portion 80 Overlapping portion 81, 82, 83 portion MF Mountain fold line VF Valley fold line FS Film F1, F2, F3, F4 Edge MD Stretching direction TD Orthogonal direction OL Virtual line CL Cutting line HS Heat seal

Claims (6)

a packaging bag that accommodates a plurality of stacked sheets;
a perforation extending in a first direction and forming an outlet on the top surface of the packaging bag;
The top surface is
an upper surface having a mountain fold line extending in the first direction;
a lower surface having a valley fold line extending in the first direction;
an intermediate surface connecting the mountain fold line and the valley fold line so as to overlap between a part of the upper surface and a part of the lower surface,
A sheet packaging body in which all of the perforations are linearly provided only on the intermediate surface . The sheet package according to claim 1, wherein at least a portion of the perforation is linearly provided on a portion of the lower surface. 2. At least a portion of the perforation is provided on the intermediate surface so as to be convex from the mountain fold line side toward the valley fold line side in a second direction intersecting the first direction. 2. The sheet package according to 2 . At least a portion of the perforation is provided on a portion of the lower surface so as to be convex from the valley fold line side toward the mountain fold line side in a second direction intersecting the first direction. The sheet package according to any one of 1 to 3 . The sheet packaging body according to claim 3 or 4 , wherein at least a portion of the perforations are provided in an arc shape. A packaging bag that accommodates a plurality of laminated sheets, and a perforation forming an outlet on the top surface of the packaging bag , the top surface having an upper surface having a mountain fold line and a lower surface having a valley fold line. and an intermediate surface connecting the mountain fold line and the valley fold line so as to overlap between a part of the upper surface and a part of the lower surface ,
a perforation forming step of forming perforations in the film extending in the stretching direction of the film;
a film folding step of folding the film along the mountain fold line extending in the stretching direction and the valley fold line extending in the stretching direction in parallel with the orthogonal direction perpendicular to the stretching direction,
In the perforation forming step, the perforation after folding the film is arranged between the mountain fold line and the valley fold line in plan view , and all of the perforations are provided in a straight line only on the intermediate surface. A method for producing a sheet packaging body, comprising forming the perforations so as to form the perforations.

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