JP7568196B2 - Sheet packaging - Google Patents

Description

The present invention relates to a sheet packaging body.

A sheet package such as pocket tissue is constructed by storing a sheet such as tissue paper in a packaging bag made of a resin film. The top surface of the packaging bag is perforated, and when the perforation is torn open, an outlet is formed. By inserting a fingertip into the packaging bag through the outlet and pinching the topmost sheet, the sheet can be pulled out (for example, see Patent Document 1).

Furthermore, sheet packaging in which the outlet is formed by tearing the perforations has problems such as the sheet tearing when the perforations are torn, the outlet being unsanitary as dust can get in after opening, and the packaging bag not maintaining its shape during use, making it impossible to use the product cleanly to the end. One sheet packaging that solves these problems is one in which the outlet is covered with a peelable and sealable sealing member, allowing the outlet to be opened and closed repeatedly (for example, Patent Document 2).

JP 2015-47270 A Utility Model Registration No. 3112201

However, when the outlet of a sheet package is covered with a sealing member and the outlet is repeatedly opened and closed, the sealing member sticks to the sheet, causing damage to the sheet or reducing the adhesiveness of the sealing member.

The objective of the present invention is to provide a sheet packaging body in which the sheet is less likely to stick to the sealing member.

The first aspect of the present invention is a sheet packaging body comprising: a packaging bag for containing a plurality of stacked sheets; an outlet opening on the top surface of the packaging bag when a portion of the top surface of the packaging bag is torn; a lid formed by the torn portion of the top surface and for freely opening and closing the outlet; and a sealing member fixed to the lid and removably attached to the top surface, the lid having a first edge connected to the top surface and extending in a first direction, and a second edge not connected to the top surface, convex in a second direction intersecting the first direction, and extending from one end of the first edge to the other end, the sealing member having a fixed portion fixed to the portion of the top surface, an adhesive portion removably attached to the portion of the top surface excluding the portion, and a free end portion adjacent to the adhesive portion and not attached to the top surface, and a non-adhesive portion overlapping the second edge is formed between the fixed portion and the adhesive portion.

In this specification, the outlet that opens on the top surface when a portion of the top surface of the packaging bag is torn refers to an opening that is formed on the top surface of the packaging bag by tearing a tearing score line formed on the top surface of the packaging bag. "Covering the outlet so that it can be opened and closed freely" means that the outlet can be opened from a state in which the lid covers the outlet, and the open outlet can be covered again by the lid.

The first direction refers to a direction along a specific direction on the top surface of the packaging bag. The second direction that intersects with the first direction refers to a direction that is perpendicular to the first direction on the same plane as the top surface of the packaging bag, or a direction that intersects with the braces.

The first edge connected to the top surface indicates the fixed end of the lid that is connected to the top surface with the outlet open, even if the tearing score line is torn. The second edge not connected to the top surface is formed when the tearing score line is torn, and indicates the free end of the lid that is not connected to the top surface with the outlet open. The second edge being convex and extending from one end of the first edge to the other end indicates that the second edge is connected to both ends of the first edge and protrudes in a plan view in a direction away from the first edge.

The portion excluding the part of the top surface to which the adhesive portion of the sealing member is adhered refers to the portion excluding the cover of the top surface. Removably adhered to the top surface refers to the ability to peel off from the state where it is adhered to the top surface, and to reattach to the top surface from the peeled state. The free end refers to the portion of the sealing member that can form a handle or knob that is not fixed or adhered to the top surface.

The non-adhesive portion refers to a region or portion of the sealing member that does not substantially have an adhesive function to the top surface. The non-adhesive portion overlaps the second edge indicates that the non-adhesive portion is disposed on at least a portion of the portion of the second edge that is covered by the sealing member.

In the first aspect, a non-adhesive portion that overlaps the second edge of the lid is formed between the fixed portion and the adhesive portion of the sealing member, so that the sheet is less likely to stick to the sealing member when the outlet is unsealed or opened or resealed or closed (hereinafter referred to as opening and closing of the outlet). This prevents damage to the sheet when the outlet is opened and closed by the lid to which the sealing member is fixed, and also prevents a decrease in the adhesiveness of the sealing member.

In addition, in the first aspect, when the sealing member is peeled off from the top surface, the outlet is torn on the top surface, and part of the torn top surface becomes a lid, so that the outlet can be opened without pressing down on the top surface of the packaging bag. Therefore, in the first aspect, it is possible to prevent the sheet from tearing when the outlet is opened.

In addition, in the first aspect, a portion of the torn top surface forms a lid that freely covers the outlet, allowing the outlet to be closed, making it difficult for dirt, dust, etc. to get into the packaging bag through the outlet. This allows the sheet packaging body to be used hygienically in the first aspect.

In addition, in the first aspect, the first edge of the lid is connected to the top surface, so that the lid constituting part of the torn top surface is not separated from the packaging bag but becomes a small piece connected to the top surface. Therefore, in the first aspect, it is possible to prevent fragments (such as pieces separated from the packaging bag) from being generated when the dispensing opening is opened (or opened).

Furthermore, in the first aspect, the second edge of the lid is not connected to the top surface and extends from one end to the other end of the first edge so as to be convex in a second direction intersecting the first direction, making it easy to fix the sealing member to the lid.

A second aspect of the present invention is a sheet packaging body in which the non-adhesive portion is disposed along the second edge. In the second aspect, the non-adhesive portion of the sealing member is disposed along the second edge of the lid, which makes it easier for the non-adhesive portion to overlap the entire portion of the second edge that is covered by the sealing member. Therefore, in the second aspect, it is possible to prevent the sheet from sticking to the sealing member when the dispensing opening is opened or closed.

Furthermore, in the first aspect, the sealing member has a fixed portion that is fixed to the lid, an adhesive portion that is removably attached to the top surface except for the lid, and a free end portion that is not attached to the top surface, so that the sealing member can form a trigger for opening and closing the outlet port on the top surface. Therefore, in the first aspect, the lid can be easily opened and closed by attaching and detaching the sealing member.

A third aspect of the present invention is a sheet packaging body in which the non-adhesive portion has a linear shape in a plan view. In this specification, linear refers to an elongated shape having a predetermined width. In the third aspect, by making the non-adhesive portion of the sealing member have a linear shape in a plan view, the entire portion of the second edge that is covered by the sealing member can be covered by the non-adhesive portion. Therefore, in the third aspect, it is possible to further prevent the sheet from sticking to the sealing member when the dispensing opening is opened or closed.

A fourth aspect of the present invention is a sheet packaging body in which the edge of the non-adhesive portion on the fixed portion side is disposed near the second edge of the portion of the top surface, and the edge of the non-adhesive portion on the adhesive portion side is disposed near the second edge of the portion excluding the portion of the top surface. In this specification, near the second edge of the portion of the top surface refers to the vicinity of the second edge on the lid. Near the second edge of the portion excluding the portion of the top surface refers to the vicinity of the second edge on the portion of the top surface excluding the lid.

In the fourth aspect, the edge of the non-adhesive portion on the fixed portion side is positioned closer to the second edge of a portion of the top surface, and the edge of the non-adhesive portion on the adhesive portion side is positioned closer to the second edge of a portion other than the portion of the top surface, so that a linear non-adhesive portion that overlaps with the second edge along the second edge can be provided on the sealing member. Therefore, in the fourth aspect, it is possible to further prevent the sheet from sticking to the sealing member when the outlet is opened or closed.

A fifth aspect of the present invention is a sheet packaging body in which the non-adhesive portion has a dot-like shape in a plan view. In this specification, the dot-like shape indicates that the non-adhesive portion is composed of a plurality of dots (or points), and the dots are distributed regularly or randomly. In the fifth aspect, by making the non-adhesive portion have a dot-like shape in a plan view, it is possible to prevent the sheet from sticking to the sealing member when the dispensing opening is opened or closed.

In addition, in the fifth aspect, by providing a non-adhesive portion having a dot-like shape in a plan view, the fixed portion and the adhesive portion of the sealing member are not separated, so that when part of the top surface is torn open to open the access opening, the force to peel off the adhesive portion is easily transmitted gently toward the fixed portion. Therefore, in the fifth aspect, it is possible to prevent the fixed portion from peeling off when the packaging bag is opened.

The sixth aspect of the present invention is a sheet packaging body in which the non-adhesive portion is configured by cutting out a portion of the sealing member. In this specification, "configured by cutting out" means that the non-adhesive portion is configured by a cutout portion provided in the sealing member.

In the sixth aspect, the non-adhesive portion is configured with such a cutout portion, so that the non-adhesive portion can be provided in the sealing member while reducing the size of the sealing member. In addition, the non-adhesive portion can be formed simply by cutting out the sealing member, so that the non-adhesive portion can be easily formed in the sealing member.

A seventh aspect of the present invention is a sheet packaging body in which the width of the adhesive portion in the first direction narrows from the free end side toward the fixed portion side. In this specification, the width of the adhesive portion in the first direction refers to the width of the adhesive portion that expands along the first direction.

In the seventh aspect, the width of the adhesive portion in the first direction narrows from the free end side toward the fixed portion side, so that the force to peel off the adhesive portion is easily transmitted toward the fixed portion side, and the outlet can be opened or unsealed with less force. Also, in the seventh aspect, because the outlet can be opened or unsealed with less force, peeling of the fixed portion when the packaging bag is opened is suppressed even when the non-adhesive portion is configured as a cutout portion in which part of the sealing member is cut out.

The eighth aspect of the present invention is a sheet packaging body in which the width of the non-adhesive portion in the second direction is 40% to 60% of the width of the adhesive portion in the second direction. In this specification, the width of the non-adhesive portion in the second direction refers to the width of the non-adhesive portion extending along the second direction. The width of the adhesive portion in the second direction refers to the width of the adhesive portion extending along the second direction.

In the eighth aspect, the width in the second direction of the non-adhesive portion of the sealing member is 40% to 60% of the width in the second direction of the adhesive portion, which makes it easier to peel off the adhesive portion while preventing the sealing member from sticking to the sheet when opening and closing the outlet.

A ninth aspect of the present invention is a sheet packaging body in which the width of the fixing portion in the second direction is 80% or more and 100% or less of the width of the adhesive portion in the second direction. In this specification, the width of the fixing portion in the second direction refers to the width of the fixing portion that extends along the second direction.

In the ninth aspect, the width of the fixing portion in the second direction is 80% or more and 100% or less of the width of the adhesive portion in the second direction, which prevents the sealing member from sticking to the sheet when opening and closing the outlet, while making the adhesive portion easier to peel off and the fixing portion less likely to peel off.

According to one aspect of the present invention, it is possible to provide a sheet packaging body in which the sheet is less likely to stick to the sealing member.

FIG. 2 is a diagram showing a sheet wrapping body according to the first embodiment. 2 is a diagram showing a sheet contained in a packaging bag of the sheet packaging body of FIG. 1 . FIG. 2 is a view of the sheet packaging body of FIG. 1 as seen from the top side. 2 is a view of the sheet packaging body of FIG. 1 as seen from the bottom side. FIG. FIG. 2 is a front view of the sheet wrapping body of FIG. 1 . 2 is a view of the sheet wrapping body of FIG. 1 as seen from the left side. FIG. 2 is a view of the sheet wrapping body of FIG. 1 as seen from the right side. FIG. FIG. 4 is an enlarged view of the outlet and the seal member in FIG. 3 . FIG. 9 is an enlarged view of the seal member in FIG. 8 . FIG. 10 is a rear view of the seal member in FIG. 9 . 10 is a cross-sectional view taken along line AA of FIG. 9. 10 is a cross-sectional view taken along line BB of FIG. 9. 2 is a diagram showing the sheet packaging body of FIG. 1 with an outlet opening. FIG. 13 is an enlarged view of a sealing member in a sheet wrapping body according to a second embodiment, as viewed from the back side. FIG. 13 is an enlarged view of a sealing member in a sheet wrapping body according to a third embodiment. FIG. FIG. 16 is a rear view of the seal member in FIG. 15 . FIG. 4 is an enlarged view of the sealing member of the comparative example as viewed from the rear side.

The embodiment of the present invention will be described in detail with reference to the drawings. In each drawing, unless otherwise specified, the same or corresponding configurations may be given the same reference numerals and the description may be omitted. Also, in each drawing, the scale of each component may differ from the actual scale.

In each figure, a three-dimensional Cartesian coordinate system is used in three axial directions (X, Y, and Z), with the width direction of the sheet packaging body defined as the X direction, the length direction defined as the Y direction, and the height direction (up and down direction) defined as the Z direction. Note that the X direction corresponds to the first direction in this embodiment (a direction along a specific direction on the top surface of the packaging bag), and the Y direction corresponds to the second direction in this embodiment (a direction perpendicular to the first direction on the same plane as the top surface of the packaging bag or a direction along a direction intersecting the braces) (Figure 3).

Figure 1 is a diagram showing a sheet packaging body of the first embodiment. Figure 2 is a diagram showing a sheet (sheet laminate) contained in a packaging bag of the sheet packaging body of Figure 1. Figure 3 is a diagram showing the sheet packaging body of Figure 1 as viewed from the top side. Figure 4 is a diagram showing the sheet packaging body of Figure 1 as viewed from the bottom side. Figure 5 is a diagram showing the sheet packaging body of Figure 1 as viewed from the front side. Figure 6 is a diagram showing the sheet packaging body of Figure 1 as viewed from the left side side. Figure 7 is a diagram showing the sheet packaging body of Figure 1 as viewed from the right side side.

As shown in FIG. 1, the sheet packaging body 100 according to the embodiment has a packaging bag 10 and an outlet 20. The sheet packaging body 100 is an example of a sheet packaging body according to the embodiment. The packaging bag 10 and the outlet 20 are an example of a packaging bag and an outlet that constitute the sheet packaging body according to the embodiment.

The packaging bag 10 contains multiple stacked sheets (or multiple sets) of sheets S (hereinafter referred to as the sheet stack SL). The sheet stack SL is contained in the packaging bag 10 so that the stacking direction (LD direction) of the sheets S is the height direction (Z direction) (Figs. 1 and 2). The sheet stack SL is designed so that the sheets S can be pulled out one by one (or one set by one) through an outlet 20 (opening OP) formed in the packaging bag 10 (Fig. 13).

The form of the sheet stack SL is not particularly limited, and for example, one (or a set of) sheets S may be Z-folded, with the top and bottom fold edges folded in half, and then folded in half at the center in the longitudinal direction so that the fold F can be pinched (Fig. 2). The sheet stack SL may also be in the form of a stack in which the sheets S are folded and stacked alternately (a so-called pop-up sheet stack), or a stack of multiple sheets S simply stacked.

The dimensions of the sheet laminate SL can be such that the length in the longitudinal direction (Y direction) of the sheet wrapping body 100 is 80 mm or more and 195 mm or less, the width in the transverse direction (X direction) perpendicular to the longitudinal direction (Y direction) of the sheet wrapping body 100 is 50 mm or more and 145 mm or less, and the height in the height direction (Z direction) is 5 mm or more and 80 mm or less (Figure 2).

The form of the sheets S constituting the sheet laminate SL is not particularly limited, and can be applied to sanitary thin papers such as tissue paper, toilet paper, kitchen paper, paper towels, etc. These sanitary thin papers also include sanitary thin papers containing moisturizing ingredients (e.g., lotion tissue, etc.). Furthermore, these sanitary thin papers may contain aqueous solutions of alcohol or sodium hypochlorite, fragrances such as air fresheners, chemicals such as deodorants, etc.

The use of the sheet S is not particularly limited, and it can be used for industrial, household, or portable purposes. Among these, the sheet in this embodiment is preferably used as a lotion tissue for household or portable use.

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 plies stacked). The shape of the sheet S is also not particularly limited, and for example, it is preferable that the shape of the two-ply sheet when folded is quadrangular (rectangular, square, etc.) in a plan view.

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

The pulp composition in the sheet S (paper sheet) is not particularly limited, and for example, any ratio of 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. The ratio of softwood pulp to hardwood pulp is not limited, and is preferably 10:90 to 80:20, and more preferably a pulp composition in which the ratio of softwood pulp to hardwood pulp is higher. The pulp contained in the sheet S (paper sheet) may be recycled paper pulp.

The basis weight of the sheet S is not particularly limited, but is preferably 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, depending on the number of plies. The basis weight can be measured in accordance with the provisions of JIS P 8124 (2011).

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

The sheet S (paper sheet) may also be embossed. Such embossing can be performed using a known embossing method.

The material of the packaging bag 10 is not particularly limited, and 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.

Among these resins, polyethylene, polypropylene, polyethylene terephthalate, and the like are preferred from the viewpoints of flexibility, excellent handling, high sealing properties, and low cost. Polyethylene is also preferred from the viewpoints of odorlessness, excellent water resistance and chemical resistance, and low cost mass production. As polyethylene, high density polyethylene, low density polyethylene, and the like can be used. Polypropylene is also preferred from the viewpoints of robustness, ease of molding, good color development when printed, and ability to impart gloss.

The form of 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, or a mixed film formed of a mixture of two or more of the above-mentioned resins.

The thickness of the packaging bag 10 is not particularly limited, and is preferably 10 μm or more and 100 μm or less, and more preferably 15 μm or more and 70 μm or less. By making the thickness of the packaging bag 10 10 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 packaging bag 10 100 μm or less, the flexibility and light weight of the packaging bag 10 can be ensured, and costs can be reduced.

When the material of the packaging bag 10 is a film such as a resin, the flow direction (the direction in which the resin flows during resin molding or the stretching direction of the film) is preferably the second direction (Y direction), and the direction perpendicular to the flow direction is preferably the first direction (X direction) (Figure 3).

The material from which the packaging bag 10 is made is not limited to the resin material such as the flexible film described above, and paper materials (such as craft paper) may also be used. The material from which the packaging bag 10 is made may also be biodegradable materials (such as biodegradable plastics and biodegradable paper) or biomass materials (renewable organic resources derived from living organisms, such as biomass film, excluding fossil resources).

The packaging form of the packaging bag 10 is not particularly limited. Examples of packaging forms that can be used for the packaging bag 10 include packaging in which both ends or either one of the ends of a cylindrical flexible film are sealed (pillow packaging), packaging in which both ends of a cylindrical flexible film are folded and sealed (caramel packaging), packaging in which a heat-shrinkable resin film is heated to adhere closely to the packaged object (shrink packaging), or a combination of these.

In this embodiment, as shown in Fig. 1 and Fig. 3 to Fig. 7, the packaging bag 10 is configured as a pillow packaging bag. Specifically, in the sheet packaging body 100, the sheet S (sheet laminate SL) is packaged in a state in which the welding portions 30, 40 are formed at both ends 10A, 10B of the cylindrical flexible film folded in three (Figs. 1, 3, and 4). The cylindrical packaging bag sheet that constitutes the pillow packaging bag may be folded in a gusset shape.

The welding part 30 has an inner end 31 and an outer end 32 extending in the first direction (X direction), and the inner end 31 seals the end 10A of the packaging bag 10 by heat welding. The welding part 40 has an inner end 41 and an outer end 42 extending in the first direction (X direction), and the inner end 41 seals the end 10B of the packaging bag 10 by heat welding (Figs. 3 to 7).

The packaging bag 10 has a top surface 11 and a bottom surface 12. In the sheet packaging body 100, the top surface 11 and the bottom surface 12 face each other in the vertical direction (Z direction) (Figs. 1, 3 to 7). The top surface 11 is an example of the top surface of the packaging bag that constitutes the sheet packaging body according to this embodiment.

The top surface 11 has edges 11A and 11B extending in a first direction (X direction) and edges 11C and 11D extending in a second direction (Y direction). The bottom surface 12 has edges 12A and 12B extending in the first direction (X direction) and edges 12C and 12D extending in the second direction (Y direction) (Figures 3 and 4).

A welded portion 30 is formed on the edge 11A of the top surface 11 and the edge 12A of the bottom surface 12. A welded portion 40 is formed on the edge 11B of the top surface 11 and the edge 12B of the bottom surface 12 (Figs. 3 to 7). That is, in the packaging bag 10, the edge 11A of the top surface 11 and the edge 12A of the bottom surface 12 are integrated via the welded portion 30, and the edge 11B of the top surface 11 and the edge 12B of the bottom surface 12 are integrated via the welded portion 40 (Figs. 5 to 7).

The dimensions of the packaging bag 10 can be such that the length L1 in the longitudinal direction (Y direction) of the sheet packaging body 100 is 80 mm or more and 200 mm or less, the width W1 in the transverse direction (X direction) perpendicular to the longitudinal direction (Y direction) of the sheet packaging body 100 is 50 mm or more and 150 mm or less, and the height J in the height direction (Z direction) is 5 mm or more and 85 mm or less (Figs. 3 and 5). Note that the dimensions of the packaging bag 10 indicate the dimensions when the sheet laminate SL is contained in the packaging bag 10 (Figs. 1, 2, and 13).

The outlet 20 is formed on the top surface 11, through which the sheet S is taken out (Fig. 13). The outlet 20 opens on the top surface 11 when a portion BL of the top surface 11 of the packaging bag 10 is torn open (Figs. 1 and 13). In this embodiment, the outlet 20 is formed by a tearing cut line CL (e.g., a perforation) formed on the top surface 11, and an opening OP is formed on the top surface 11 of the packaging bag 10 by tearing the tearing cut line CL, and this opening OP constitutes the outlet 20 (Figs. 1, 3, and 13).

The cut line for splitting CL is a cut line where the cuts C1 and ties T1 (the uncut parts between two cuts C1) are arranged alternately, and when a tie T1 breaks, the adjacent cuts C1 on both sides become continuous cuts (Figures 3 and 8).

In the tearing cut line CL, the length of the cut C1 and the length of the tie T1 are arbitrary. The length of each cut C1 can be 0.8 mm or more and 9.0 mm or less, preferably 1.5 mm or more and 8.0 mm or less, and more preferably 2.5 mm or more and 7.0 mm or less. The length of each tie T1 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 this embodiment, the tip 20C of the outlet 20 may be configured with a continuous score line (not shown). Here, a continuous score line indicates that it has been cut in advance. Specifically, it indicates that a portion (tip 20C) of the splitting score line CL that configures the outlet 20 is configured with a single cut (not shown).

The length of the cut at the tip 20C of the outlet 20 can be any length. For example, the length of the cut can be 10 mm or more and 30 mm or less, preferably 13 mm or more and 27 mm or less, and more preferably 16 mm or more and 25 mm or less.

The shape of the outlet 20 is arbitrary. In this embodiment, the shape of the outlet 20 is semi-elliptical in a plan view. Specifically, the outlet 20 extends from the end 20A on the edge 11B side of the top surface 11 to the end 20B, and is formed so as to be convex from the edge 11B of the top surface 11 toward the center 11E (Figs. 1, 3, and 8).

Here, the central portion 11E of the top surface 11 includes the center (centroid) G of the top surface 11 and indicates an area of about one-tenth to one-fifth of the entire top surface 11. With respect to the central portion 11E of the top surface 11, the outlet 20 is formed on the edge 11B side in the second direction (Y direction) (Figure 3).

The spacing L2 of the outlets 20 in the second direction (Y direction) is 15% to 60% of the length L1 of the packaging bag 10 in the longitudinal direction (Y direction), preferably 20% to 55%, and more preferably 25% to 50%. The spacing W2 of the outlets 20 in the first direction (X direction) is 50% to 90% of the width W1 of the packaging bag 10 in the width direction (X direction), preferably 60% to 85%, and more preferably 70% to 80% (Figure 3).

The sheet packaging body 100 of this embodiment further has a lid body 50. The lid body 50 is formed from a portion BL of the split top surface 11, and covers the outlet 20 in an openable and closable manner. Here, covering the outlet 20 in an openable and closable manner means that the outlet 20 can be opened from a state in which the lid body 50 covers the outlet 20, and the open outlet 20 (opening OP) can be covered again by the lid body 50 (Figs. 1, 3, and 13).

The lid 50 has a first edge 51 and a second edge 52. The first edge 51 is connected to the top surface 11 and extends in a first direction (X direction). The second edge 52 is not connected to the top surface 11, is convex in a second direction (Y direction), and extends from one end 20A of the first edge 51 to the other end 20B.

The first edge 51 connected to the top surface 11 constitutes the fixed end 51 of the lid body 50 connected to the top surface 11 with the outlet 20 (OP) open even after the tearing cut line CL is torn. The first edge 51 of the lid body 50 constituting this fixed end 51 corresponds to the edge 20D on the welded part 40 side of the outlet 20, which serves as the base end when opening and closing the outlet 20 (Figs. 3 and 8). The edge 20D of the outlet 20 is formed at the inner end 41 of the welded part 40, and the first edge 51 of the lid body 50 (edge 20D of the outlet 20) is fixed to the inner end 41 of the welded part 40 (Figs. 3, 8, and 13).

The second edge 52 that is not connected to the top surface 11 is formed when the tearing cut line CL is torn, and constitutes the free end 52 of the lid 50 that is not connected to the top surface 11 when the outlet 20 is open. Here, the second edge 52 being convex and extending from one end 20A of the first edge 51 to the other end 20B means that the second edge 52 protrudes in a plan view in a direction away from the first edge 51 (SD direction) when connected to both ends 20A, 20B of the first edge 51 (FIGS. 3 and 8).

The sheet packaging body 100 according to this embodiment has a sealing member 60 that is fixed to the lid body 50 and adheres to the top surface 11. The sealing member 60 has a fixing portion 61, an adhesive portion 62, and a free end portion 63 (FIGS. 1, 3, 8, 9 to 13).

The fixing portion 61 of the sealing member 60 is fixed to the lid body 50. Specifically, the fixing portion 61 is fixed to the inside of the lid body 50 along a portion 52A of the second edge 52 (FIGS. 3 and 8). Note that in this embodiment, the fixing portion 61 is provided on the sealing member 60, but the position of the fixing portion 61 is not limited thereto, and for example, the fixing portion 61 may be provided on the top surface 11 (the portion that becomes the lid body 50) of the packaging bag 10.

The portion 52A of the second edge 52 corresponds to the tip 20C of the outlet 20 (Figs. 3 and 8). In this embodiment, the distance W4 in the first direction (X direction) of the tip 20C of the outlet 20 is shorter than the width W3 in the first direction (X direction) of the seal member 60 (Figs. 3 and 8).

Here, the width W3 of the sealing member 60 in the first direction (X direction) indicates the range of the sealing member 60 extending in the first direction (X direction). The spacing W4 of the tip 20C in the first direction (X direction) indicates the distance from one end 52B to the other end 52C along the first direction (X direction) of the part 52A of the second edge 52 constituting the tip 20C.

The spacing W4 of the tips 20C in the first direction (X direction) is arbitrary, but is 75% to 99% of the width W3 of the sealing member 60 in the first direction (X direction), preferably 80% to 95%, and more preferably 85% to 90%. In this embodiment, for example, the width W3 of the sealing member 60 in the first direction (X direction) is about 25 mm, and the spacing W4 of the tips 20C in the first direction (X direction) is about 22 mm.

In the sealing member 60, the width L4 of the fixing portion 61 in the second direction (Y direction) is 10% or more and 70% or less, preferably 20% or more and 60% or less, and more preferably 30% or more and 50% or less, of the length L3 of the sealing member 60 in the second direction (Y direction) (Figures 8 and 9).

The width L4 of the fixing portion 61 in the second direction (Y direction) is 80% or more and 100% or less of the width L5 of the adhesive portion 62 in the second direction (Y direction), preferably 83% or more and 97% or less, and more preferably 85% or more and 95% or less (Figure 9).

Here, the length L3 of the sealing member 60 in the second direction (Y direction) is the length of the sealing member 60 extending along the second direction (Y direction), and indicates the total length of the width L4 of the fixing portion 61 in the second direction (Y direction), the width L5 of the adhesive portion 62 in the second direction (Y direction), and the width L6 of the free end portion 63 in the second direction (Y direction) (Figures 8 and 9).

The width L4 of the fixed portion 61 in the second direction (Y direction) indicates the width of the fixed portion 61 extending along the second direction (Y direction) (Figs. 8 and 9). The width L5 of the adhesive portion 62 in the second direction (Y direction) indicates the width of the adhesive portion 62 extending along the second direction (Y direction) (Fig. 9). The width L6 of the free end portion 63 in the second direction (Y direction) indicates the width of the free end portion 63 extending along the second direction (Y direction) (Fig. 9).

The adhesive portion 62 of the sealing member 60 is adjacent to the fixing portion 61 and is removably adhered to a portion of the top surface 11 excluding the portion BL (Figs. 9 to 13). The portion of the top surface 11 to which the adhesive portion 62 of the sealing member 60 is adhered excluding the portion BL corresponds to the portion of the top surface 11 excluding the lid body 50. Removably adhered to the top surface 11 means that the adhesive portion 62 can be peeled off from a state where it is adhered to the top surface 11, and can be adhered again to the top surface 11 from the peeled state (Figs. 1 and 13).

The width L5 of the adhesive portion 62 in the second direction (Y direction) is 5% to 65% of the length L3 of the sealing member 60 in the second direction (Y direction), preferably 15% to 55%, and more preferably 25% to 45% (Figure 9).

The free end 63 is adjacent to the adhesive portion 62 and is not adhered to the top surface 11 (FIGS. 9 to 13). Specifically, the free end 63 constitutes a portion of the sealing member 60 that is not fixed or adhered to the top surface 11 and can form a handle of the sealing member 60 (FIGS. 1, 3, 8, 9 to 13).

The width L6 of the free end 63 in the second direction (Y direction) is 10% to 40% of the length L3 of the sealing member 60 in the second direction (Y direction), preferably 15% to 35%, and more preferably 20% to 30% (Figure 9).

In this embodiment, the width L6 of the free end 63 in the second direction (Y direction) is set to 10% to 40% of the length L3 of the sealing member 60 in the second direction (Y direction), so that when opening and closing the outlet 20, the free end 63 of the sealing member 60 is easy to grasp, the adhesive portion 62 is easy to peel off, and the fixed portion 61 is difficult to peel off.

The shape of the free end 63 is arbitrary, and in this embodiment, the edge (edge 63B) of the free end 63 that is away from the adhesive portion 62 is convex in the direction away from the adhesive portion 62, and preferably the edge 63B of the free end 63 is arc-shaped (Figures 3, 8 to 10).

Here, the side of the free end 63 that is away from the adhesive portion 62 refers to the side of the free end 63 that is adjacent to the adhesive portion 62 and is opposite the adhesive portion 62. "Being convex toward the side away from the adhesive portion 62" means that the edge (edge 63B) of the free end 63 on the side opposite the adhesive portion 62 tapers toward the side away from the adhesive portion 62 in the second direction (Y direction).

The form of the sealing member 60 is not limited, and for example, a base material BM coated with adhesives G1 and G2 can be used (Figs. 10 to 12). In this embodiment, the portion of the base material BM on which the adhesive G1 is applied forms the fixed portion 61, the portion on which the adhesive G2 is applied forms the adhesive portion 62, and the portion on which neither the adhesive G1 nor G2 is applied forms the free end portion 63 (Figs. 10 to 12).

The material of the substrate BM is not limited, but resin materials such as the flexible film used in the packaging bag 10 described above, paper materials, biodegradable materials, biomass materials, etc. can be used. In addition, the form of the substrate BM is not limited, and a single layer film, laminate film, or mixed film used in the packaging bag 10 described above can be used. Furthermore, the thickness of the substrate BM can be the thickness used in the packaging bag 10 described above.

The material of the adhesive G1 of the fixing portion 61 is not limited, but it is preferable that the adhesive has an adhesive strength of 2 N/25 mm or more and 6 N/25 mm or less. The material of the adhesive G2 of the adhesive portion 62 is not limited, but it is preferable that the adhesive has an adhesive strength of 2 N/6 mm or more and 8 N/25 mm or less. Here, the adhesive strength refers to the peel resistance value measured by an adhesive strength test method based on JIS Z0237.

The adhesive strength of the adhesive G1 of the fixing portion 61 and the adhesive G2 of the adhesive portion 62 can be any value. For example, the adhesive strength of the adhesive G2 of the adhesive portion 62 can be made weaker than that of the adhesive G1 of the fixing portion 61. Also, the adhesive G1 of the fixing portion 61 and the adhesive G2 of the adhesive portion 62 may have the same adhesive strength. Note that, if the adhesive G1 of the fixing portion 61 and the adhesive G2 of the adhesive portion 62 are to have the same adhesive strength, the adhesive G1 and the adhesive G2 can be the same adhesive.

Also, the free end 63 may be coated with the same adhesive as the fixed portion 61 and the adhesive portion 62, and then the adhesiveness may be lost by coating it with varnish or attaching a film on top of it. Also, the free end 63 may be configured without any adhesive coating from the beginning.

When the sealing member 60 is viewed from the back side, the fixing portion 61 has an application surface for adhesive G1 formed in an area surrounded by edges 61A, 61B, 61C, and 61D. The adhesive portion 62 has an application surface for adhesive G2 formed in an area surrounded by edges 62A, 62B, 62C, and 62D. Furthermore, at the free end portion 63, a portion of the base material BM is exposed in an area surrounded by edges 63A and 63B (FIG. 10).

In the sealing member 60, a non-adhesive portion 64 is formed between the fixed portion 61 and the adhesive portion 62. The non-adhesive portion 64 constitutes a partial area or portion of the sealing member 60 that does not substantially have an adhesive function to the top surface 11. In this embodiment, the non-adhesive portion 64 constitutes the boundary area E1 between the fixed portion 61 and the adhesive portion 62, and is neither fixed nor adhered to the top surface 11 (Figure 9).

The non-adhesive portion that does not substantially have an adhesive function may be in any form. For example, the non-adhesive portion may be coated with the same adhesive as that used for the fixed portion and the adhesive portion, and then coated with varnish or a film to remove the adhesive property. The non-adhesive portion may be configured in a state where no adhesive is applied from the beginning, or where the adhesive is applied to an extent that the adhesive function is not substantially exerted. Furthermore, the non-adhesive portion may be configured by cutting out a part of the seal member.

The non-adhesive portion 64 overlaps the second edge 52 of the lid body 50 when the seal member 60 is fixed to the lid body 50. Here, the non-adhesive portion 64 overlapping the second edge 52 of the lid body 50 means that the non-adhesive portion 64 is disposed on at least a portion of the portion of the second edge 52 that is covered by the seal member 60. In this embodiment, the non-adhesive portion 64 is provided on the seal member 60 so as to entirely cover a portion 52A of the second edge 52 of the lid body 50 (the tip 20C of the outlet 20).

The non-adhesive portion 64 is disposed along the second edge 52 of the lid 50. The shape of the non-adhesive portion 64 is not particularly limited, but in the sheet packaging body 100 of the first embodiment, the non-adhesive portion 64 has a linear shape in plan view. Here, linear refers to an elongated shape having a predetermined width (FIG. 10). In the first embodiment, the non-adhesive portion 64 (boundary region E1) has a convex shape in plan view from the fixed portion 61 side toward the adhesive portion 62 side (FIG. 10).

When the sealing member 60 is viewed from the back side, the non-adhesive portion 64 is an area surrounded by edges 64A, 64B, 64C, and 64D, with a portion of the base material BM, excluding the free end portion 63, exposed (Figure 10).

The non-adhesive portion 64 has an edge 64A on the fixed portion 61 side disposed near the second edge 52 of the lid body 50 (part BL of the top surface 11), and an edge 64D on the adhesive portion 62 side disposed near the second edge 52 of the part ES of the top surface 11 excluding the lid body 50 (part BL of the top surface 11). Here, "near the second edge 52 of the lid body 50" refers to the vicinity of the second edge 52 on the lid body 50. "near the second edge 52 of the part ES of the top surface 11" refers to the vicinity of the second edge 52 on the part of the top surface 11 excluding the lid body 50.

In the sealing member 60, the width L7 of the non-adhesive portion 64 in the second direction (Y direction) is 40% to 60% of the width L5 of the adhesive portion 62 in the second direction (Y direction), preferably 43% to 57%, and more preferably 45% to 55% (FIG. 9). Here, the width L7 of the non-adhesive portion 64 in the second direction (Y direction) refers to the width of the non-adhesive portion 64 extending along the second direction (Y direction).

The edge 62D of the adhesive portion 62 and the edge 63A of the free end portion 63 form a boundary line E2 between the adhesive portion 62 and the free end portion 63 (FIG. 10). In this embodiment, the shape of the boundary line E2 in a plan view is convex from the adhesive portion 62 side toward the free end portion 63 side (FIG. 10). Here, the boundary line E2 forms a line that extends along the boundary between the adhesive portion 62 and the free end portion 63 of the sealing member 60.

In this embodiment, as described above, a non-adhesive portion 64 that overlaps the second edge 52 of the lid 50 is formed between the fixed portion 61 and the adhesive portion 62 of the sealing member 60, so that the sheet S is less likely to stick to the sealing member 60 when the outlet 20 is unsealed, opened, resealed, or closed (hereinafter referred to as opening and closing of the outlet 20). This prevents damage to the sheet S when the outlet 20 is opened and closed by the lid 50 to which the sealing member 60 is fixed, and also prevents a decrease in the adhesiveness of the sealing member 60 (FIGS. 1, 10, and 13).

In addition, in this embodiment, when the sealing member 60 is peeled off from the top surface 11, the outlet 20 is torn in the top surface 11, and the torn portion BL of the top surface 11 becomes the lid body 50, so that the outlet 20 can be opened without pressing the top surface 11 of the packaging bag 10 (Figs. 1 and 13). Therefore, in this embodiment, it is possible to prevent the sheet S from being torn when the outlet 20 is opened.

In addition, in this embodiment, a portion BL of the split top surface 11 constitutes a lid 50 that freely covers the outlet 20 and can be opened and closed, so that the outlet 20 can be closed, making it difficult for dirt, dust, etc. to enter the packaging bag 10 through the outlet 20. As a result, in this embodiment, the sheet packaging body 100 can be used hygienically.

In addition, in this embodiment, the first edge 51 of the lid 50 is connected to the top surface 11, so that the lid 50 constituting the portion BL of the torn top surface 11 is not cut off from the packaging bag 10 but remains as a small piece connected to the top surface 11 (FIG. 13). Therefore, in this embodiment, it is possible to prevent fragments (such as pieces cut off from the packaging bag 10) from being generated when the dispensing opening 20 is opened (or opened).

In this embodiment, the seal member 60 is fixed to the outlet 20 via the fixing portion 61, so that the outlet 20 can be opened and closed without touching the fingertips with the outlet 20. Therefore, according to this embodiment, the burden on the fingertips when opening and closing the outlet 20 can be reduced (Figs. 1, 3, 8, and 13).

In addition, in this embodiment, the second edge 52 of the lid 50 is not connected to the top surface 11 (it forms a free end) and extends from one end 20A to the other end 20B of the first edge 51 so as to be convex in the second direction (Y direction) intersecting the first direction (X direction), making it easy to fix the sealing member 60 to the lid 50 (Figures 3 and 8).

In addition, in this embodiment, the sealing member 60 has a fixed portion 61 that is fixed to the lid 50, an adhesive portion 62 that is removably attached to the top surface 11 except for the lid 50, and a free end portion 63 that is not attached to the top surface 11, so that the sealing member 60 can form a trigger TG for opening and closing the outlet 20 on the top surface 11 (Figures 1, 3, 8 to 10). Therefore, in this embodiment, the lid 50 can be easily opened and closed by attaching and detaching the sealing member 60.

In addition, in this embodiment, the edge 63B of the free end 63 on the side away from the adhesive portion 62 is convex in the direction away from the adhesive portion 62, making it easier for the free end 63 of the sealing member 60 to curl up. In addition, because the free end 63 of the sealing member 60 can be easily curled up, the free end 63 of the sealing member 60 can be firmly pinched. Therefore, in this embodiment, it is even easier to open and close the outlet 20 (Figs. 1, 3, 8 to 10, and 13).

In addition, in this embodiment, by making the edge 63B of the free end 63 away from the adhesive portion 62 into an arc shape, it is possible to reduce the strain on the fingertips touching the free end 63 when pinching the free end 63 of the sealing member 60. Therefore, in this embodiment, the free end 63 of the sealing member is easy to pinch, making it even easier to open and close the outlet 20 (Figs. 1, 3, 8 to 10, and 13).

In this embodiment, as described above, the tip 20C of the outlet 20 is configured with a continuous score line, so that the part BL of the top surface 11 of the packaging bag 10 is likely to tear when the outlet 20 is opened. As described above, the distance W4 in the first direction (X direction) of the tip 20C of the outlet 20 is shorter than the width W3 in the first direction (X direction) of the seal member 60, so that both ends 52B, 52C of the part 52A of the second edge 52 constituting the tip 20C can be covered with the seal member 60 (Figures 1, 3, 8, and 13). Therefore, in this embodiment, it is possible to prevent the top surface 11 of the packaging bag 10 from tearing in unexpected parts around the tip 20C of the outlet 20 covered by the seal member 60 when the outlet 20 is opened.

In this embodiment, the outlet 20 is formed on one edge 11B side of the top surface 11 in the second direction (Y direction), so that the outlet 20 can be opened on the side of the welded portion 40 of the top surface 11. As a result, when removing the sheet S from the outlet 20, the sheet S can be pulled out toward the top surface 11, and can also be pulled out toward the welded portion 40 along the second direction (Y direction). Therefore, according to this embodiment, it is possible to provide a sheet packaging body 100 that is easy to use (Figs. 1, 3, 13).

In addition, in this embodiment, the outlet 20 is formed on one edge 11B side of the top surface 11 in the second direction (Y direction), so the outlet 20 is not formed on the entire top surface 11. Therefore, the shape of the packaging bag 10 is likely to be maintained even after the outlet 20 is opened or unsealed, and the storage state of the sheet S (sheet stack SL) inside the packaging bag 10 is unlikely to be disturbed. Therefore, according to this embodiment, the sheet packaging body 100 can be used neatly to the very end (Figure 13).

In this embodiment, the non-adhesive portion 64 of the seal member 60 is disposed along the second edge 52 of the lid 50, which makes it easier for the non-adhesive portion 64 to overlap the entire portion of the second edge 52 that is covered by the seal member 60. Therefore, in this embodiment, it is possible to prevent the sheet S from sticking to the seal member 60 when the outlet 20 is opened or closed (FIGS. 1, 10, and 13).

In this embodiment, by making the non-adhesive portion 64 of the sealing member 60 linear in plan view, the entire portion of the second edge that is covered by the sealing member 60 can be covered by the non-adhesive portion 64. Therefore, in this embodiment, it is possible to further prevent the sheet S from sticking to the sealing member 60 when the outlet 20 is opened or closed (FIGS. 1, 10, and 13).

In this embodiment, the edge 64A of the non-adhesive portion 64 on the fixed portion 61 side is positioned closer to the second edge 52 of the lid body 50 (part BL of the top surface 11), and the edge 64D of the non-adhesive portion 64 on the adhesive portion 62 side is positioned closer to the second edge 52 of the part other than the lid body 50 (part BL of the top surface 11), so that a linear non-adhesive portion 64 that overlaps with the second edge 52 along the second edge 52 can be provided in the sealing member 60. Therefore, in this embodiment, it is possible to further prevent the sheet from sticking to the sealing member 60 when the outlet 20 is opened or closed (FIGS. 1, 10, 13).

In this embodiment, as described above, by setting the width L7 of the non-adhesive portion 64 of the sealing member 60 in the second direction (Y direction) to 40% to 60% of the width L5 of the adhesive portion 62 in the second direction (Y direction), the adhesive portion 62 can be easily peeled off while preventing the sealing member 60 from sticking to the sheet S when opening and closing the outlet 20.

In addition, in this embodiment, the width L4 of the fixing portion 61 in the second direction (Y direction) is set to 80% or more and 100% or less of the width of the adhesive portion 62 in the second direction (Y direction), which prevents the sealing member 60 from sticking to the sheet S when opening and closing the outlet 20, making it easier to peel off the adhesive portion 62 and harder for the fixing portion 61 to peel off.

Figure 14 is an enlarged view of the sealing member in the sheet packaging body of the second embodiment, viewed from the back. Note that in Figure 14, parts common to the first embodiment are designated by the same reference numerals as in Figure 10 or corresponding reference numerals, and descriptions thereof are omitted.

The sheet packaging body 100 of the second embodiment is a sheet packaging body in which the non-adhesive portion 65 has a dot-like shape in a plan view. Here, the dot-like shape indicates that the non-adhesive portion 65 is composed of a plurality of dots (or points), and each dot is distributed regularly or randomly. In this embodiment, the non-adhesive portion 65 is composed of a plurality of dots 65A, and each dot 65A is arranged at a predetermined interval along the second edge 52 of the lid body 50 (FIG. 14).

In the second embodiment, the shape of each dot 65A constituting the non-adhesive portion 65 is substantially circular in plan view (FIG. 14). Note that the shape of each dot 65A constituting the non-adhesive portion 65 is not limited to this embodiment, and the non-adhesive portion 65 may be constituted by dots whose shape in plan view is other than circular, such as a triangle, a rectangle, or an ellipse. Furthermore, the size and number of each dot 65A constituting the non-adhesive portion 65 are not limited to this embodiment.

In the second embodiment, the sealing member 60 may further include the above-mentioned linear non-adhesive portions 64 in addition to the dot-shaped non-adhesive portions 65.

In the second embodiment, the non-adhesive portion 65 has a dot-like shape in plan view, which can prevent the sheet S from sticking to the sealing member 60 when the outlet 20 is opened or closed.

In addition, in the second embodiment, by providing the non-adhesive portion 65 having a dot-like shape in a plan view, the fixed portion 61 and the adhesive portion 62 of the sealing member 60 are not separated, so that when the portion BL of the top surface 11 is torn open to open the outlet 20, the force to peel off the adhesive portion 62 is easily transmitted gradually toward the fixed portion 61. Therefore, in this embodiment, it is possible to prevent the fixed portion 61 from peeling off when the packaging bag 10 is opened.

Figure 15 is an enlarged view of the sealing member in the sheet packaging body of the third embodiment. Figure 16 is a view of the sealing member in Figure 15 as seen from the back side. Note that in Figures 15 and 16, parts common to the first embodiment are given the same reference numerals as in Figures 9 and 10 or corresponding reference numerals, and descriptions thereof will be omitted.

The sheet packaging body 100 of the third embodiment has a non-adhesive portion 66 formed by cutting out a portion of the sealing member 60. In this embodiment, the non-adhesive portion 66 is formed of two non-adhesive portions 66A and 66B that face each other in the first direction (X direction), and the non-adhesive portions 66A and 66B correspond to the cutout portions N1 and N2, respectively, provided in the sealing member 60 (Figures 15 and 16).

In the third embodiment, the sealing member 60 may be provided with the above-mentioned linear non-adhesive portion 64 in addition to the non-adhesive portion 66 (non-adhesive portions 66A, 66B) formed by the notches N1, N2. Also, the sealing member 60 may be provided with the above-mentioned dot-shaped non-adhesive portion 65 in addition to the non-adhesive portion 66.

In addition, in the sheet packaging body 100 of the third embodiment, the width W3 of the adhesive portion 62 in the first direction (X direction) narrows from the free end 63 side toward the fixed portion 61 side. Here, the width W3 of the adhesive portion 62 in the first direction (X direction) indicates the width of the adhesive portion 62 expanding along the first direction (X direction). In this embodiment, the width W5 of the adhesive portion 62 on the fixed portion 61 side is shorter than the width W3 of the adhesive portion 62 on the free end 63 side (FIGS. 15 and 16).

In this embodiment, the non-adhesive portion 66 (non-adhesive portions 66A, 66B) is configured with the cutout portions N1, N2, so that the non-adhesive portion 66 can be provided on the seal member 60 while reducing the size of the seal member 60. In addition, since the non-adhesive portion 66 is formed simply by cutting out the seal member 60, it is easy to form the non-adhesive portion 64 on the seal member 60.

In this embodiment, the width W3 of the adhesive portion 62 in the first direction (X direction) narrows from the free end 63 side toward the fixed portion 61 side, so that the force to peel off the adhesive portion 62 is easily transmitted toward the fixed portion 61 side, and therefore the outlet 20 can be opened or unsealed with less force. Also, in this embodiment, because the outlet 20 can be opened or unsealed with less force, peeling of the fixed portion 61 when the packaging bag 10 is opened can be suppressed even when the non-adhesive portion 66 is composed of the cutout portions N1, N2 in which a portion of the sealing member 60 is cut out.

The present embodiment will now be described in more detail using examples. The examples and comparative examples were evaluated using the following tests.

[Sheet packaging (test specimen)]
As a test specimen, a sheet packaging body 100 in which a plurality of sheets S (sheet laminate SL) were packaged in a packaging bag 10 was prepared (FIGS. 1 to 7). For the sheet laminate SL, a tissue paper containing a moisturizing component (product name "Elleair Zeitaku Moisturizing", manufactured by Daio Paper Corporation, 2 ply, number of sets: 14 sets (28 sheets), dimensions: length (width) about 125 mm, depth (vertical width) about 75 mm), height (bulk) about 13 mm) was used, in which the sheets S were laminated in a folded state. The sheet laminate SL was placed in the packaging bag 10 so that the stacking direction (LD direction) was the height direction (Z direction) of the sheet packaging body 100. The material of the packaging bag 10 was polyethylene (PE) with a thickness of 62 μm. The packaging form of the packaging bag 10 was pillow packaging in which both ends of the packaging bag 10 in the longitudinal direction (Y direction) were sealed by heating to form the welded parts 30 and 40. The dimensions of the packaging bag 10 were a length in the longitudinal direction (Y direction) of about 134 mm, a width in the transverse direction of about 84 mm, and a height in the vertical direction of about 12 mm. A tearing score line CL was provided on the top surface 11 of the packaging bag 10, which forms an outlet 20 that opens on the top surface 11 when the top surface 11 of the packaging bag 10 is torn, and a lid body 50 that covers the outlet 20 in an openable and closable manner was provided such that a first edge 51 of the welded part 40 of the part BL was connected to the top surface 11, and a second edge 52 of the part BL on the side of the welded part 30 constituted a free end 52 of the lid body 50 that was not connected to the top surface 11 (FIGS. 1, 3, 8, and 13). A seal member 60 was provided on the top surface 11 of the packaging bag 10, which was fixed to the lid body 50 and bonded to the top surface 11. The sealing member 60 was provided with a fixed portion 61, an adhesive portion 62, and a free end portion 63 (FIGS. 9 and 10).

[Sheet attachment]
The sealing member 60 was pinched, the tearing cut line CL on the top surface of the packaging bag 10 was torn, the lid body 50 was unfolded to open the outlet 20, and the lid body 50 was returned to its original position to close the outlet 20. When the lid body 50 was unfolded again to open the outlet 20, it was confirmed whether the sheet S had adhered to the sealing member 60 (sheet adhesion). The sheet adhesion was evaluated by rating the number of users who had the sheet S adhered to the sealing member 60 when 0 users opened the outlet 20 again (◯), 1 to 2 users (△), and 3 or more users (×).

The following describes examples and comparative examples.

[Example 1]
A linear non-adhesive portion 64 was provided between the fixed portion 61 and the adhesive portion 62 of the seal member 60 so as to overlap the second edge 52 along the second edge 52 of the lid 50 (FIGS. 10 to 12). The results are shown in Table 1.

[Example 2]
The evaluation was carried out in the same manner as in Example 1, except that dot-shaped non-bonded portions 65 were provided instead of the linear non-bonded portions 64 (FIG. 14). The results are shown in Table 1.

[Example 3]
The evaluation was carried out in the same manner as in Example 1, except that a non-adhesive portion 66 (non-adhesive portions 66A, 66B) composed of notches N1, N2 was provided instead of the linear non-adhesive portion 64 (FIGS. 15 and 16). The results are shown in Table 1.

[Comparative Example 1]
The evaluation was carried out in the same manner as in Example 1, except that no non-adhesive portion was provided between the fixed portion 71 and the adhesive portion 72 of the sealing member 70 (FIG. 17). The results are shown in Table 1.

As can be seen from Table 1, the sheet packaging body in which a non-adhesive portion overlapping the second edge of the lid body is formed between the fixed portion and the adhesive portion of the sealing member had good seal adhesion results (Examples 1 to 3, Figures 1 to 19).

In contrast, the sheet packaging, which did not have a non-adhesive portion between the fixed portion and the adhesive portion of the sealing member, did not provide good results in terms of seal adhesion (Comparative Example 1).

Although the embodiment of the present invention has been described above, the present invention is not limited to a specific embodiment, and various modifications and variations are possible within the scope of the invention described in the claims.

100 Sheet packaging body S Sheet SL Sheet laminate F Fold LD Stacking direction 10 Packaging bag 10A, 10B End 11 Top surface 11A, 11B, 11C, 11D Edge 11E Center G Center (centre)
BL Part (small piece)
ES part 12 bottom surface 12A, 12B, 12C, 12D edge 20 outlet 20A, 20B end 20C tip 20D edge CL cut line for cleavage C1 cut T1 tie OP opening 30 welded part 31 inner end 32 outer end 40 welded part 41 inner end 42 outer end 50 cover 51 first edge (fixed end)
52 Second edge (free edge)
52A Part 52B, 52C End 52C End SD Direction moving away from first edge 51 60 Sealing member TG Trigger 61 Fixed portion 61A, 61B, 61C, 61D Edge 62 Adhesive portion 62A, 62B, 62C, 62D Edge 63 Free end 63A, 63B Edge 64 Non-adhesive portion 64A, 64B, 64C, 64D Edge 65 Non-adhesive portion 65A Dot 66, 66A, 66B Non-adhesive portion N1, N2 Notch BM Base material G1, G2 Adhesive E1 Boundary region E2 Boundary line L1, L3 Length L2 Spacing L4, L5, L6, L7 Width W1, W3, W5 Width W2, W4 Spacing J Height

Claims (9)

A packaging bag for accommodating a plurality of stacked sheets;
a take-out opening that opens on the top surface when a portion of the top surface of the packaging bag is torn;
A cover formed from a part of the split top surface and covering the outlet in an openable and closable manner;
a seal member fixed to the lid and removably attached to the top surface,
The lid body is
a first edge connected to the top surface and extending in a first direction;
a second edge that is not connected to the top surface, that is convex in a second direction intersecting the first direction, and that extends from one end of the first edge to the other end of the first edge;
The sealing member is
A fixing portion fixed to the portion of the top surface;
An adhesive portion that is detachably attached to a portion of the top surface excluding the portion;
a free end portion adjacent to the adhesive portion and not adhered to the top surface;
A sheet packaging body, wherein a non-adhesive portion overlapping the second edge is formed between the fixed portion and the adhesive portion. The sheet packaging body according to claim 1, wherein the non-adhesive portion is disposed along the second edge. The sheet packaging body according to claim 2, wherein the non-adhesive portion has a linear shape in plan view. an edge of the non-adhesive portion on the fixed portion side is disposed near the second edge of the portion of the top surface;
The sheet packaging body according to claim 3 , wherein an edge of the non-adhesive portion on the adhesive portion side is disposed close to the second edge of the portion excluding the part of the top surface. The sheet packaging body according to claim 2, wherein the non-adhesive portion has a dot-like shape in plan view. The sheet packaging body according to claim 1, wherein the non-adhesive portion is formed by cutting out a portion of the sealing member. The sheet packaging body according to claim 6, wherein the width of the adhesive portion in the first direction narrows from the free end side toward the fixed portion side. The fixing portion is surrounded by three linear edges and an edge that is convex from the fixing portion side toward the adhesive portion side,
the non-adhesive portion is surrounded by two linear edges opposing each other in the first direction, an edge that constitutes a boundary between the fixed portion and the convex edge, and an edge that is convex from the non-adhesive portion side toward the adhesive portion side,
the adhesive portion is surrounded by three linear edges and an edge that constitutes a boundary between the adhesive portion and the convex edge of the non-adhesive portion,
The sheet packaging body according to claim 1 , wherein a width of the non-adhesive portion in the second direction is from 40% to 60% of a width of the adhesive portion in the second direction. The fixing portion is surrounded by three linear edges and an edge that is convex from the fixing portion side toward the adhesive portion side,
the non-adhesive portion is surrounded by two linear edges opposing each other in the first direction, an edge that constitutes a boundary between the fixed portion and the convex edge, and an edge that is convex from the non-adhesive portion side toward the adhesive portion side,
the adhesive portion is surrounded by three linear edges and an edge that constitutes a boundary between the adhesive portion and the convex edge of the non-adhesive portion,
The sheet packaging body according to claim 1 , wherein the width of the fixing portion in the second direction is from 80% to 100% of the width of the adhesive portion in the second direction.

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