PACKAGING PRODUCTS IN SHEET AND STICKER FORM

Abstract

The invention proposes a sheet-type product packaging to limit defects in which the takeout point cannot be formed in the sheet-type product packaging by peeling off a portion of the seal. The sheet-type product packaging (2) consists of a bag body (20) and a seal (100) attached to the bag body. The seal consists of a first plastic layer (104), a silicone layer (105), a first adhesive layer (106), a second plastic layer (107), and a cut (110) which forms the seal opening (125). The cut is not formed in the first plastic layer but is formed in the second plastic layer. A portion of the second plastic layer is peeled off through the cut to form the seal opening (125). The seal consists of a first region (R1) extending from the beginning edge of the cut towards the end, and a second region (R2) extending from the end edge of the cut towards the end. The silicone layer and the first adhesive layer are arranged in the first and second regions. The silicon content in the first region was lower than the silicon content in the second region.

Description

Sheet packaging and label for packaging

[0001] The present invention relates to a sheet package in which a collection of sheets such as wet tissues is packaged, and a label for the package.

[0002] Patent Literature 1 discloses a sheet packaging for packaging an assembly of sheets such as wet tissues. The sheet packaging includes an assembly of a plurality of sheets, a film bag for packaging the assembly and having a bag opening serving as a take-out port, and a label removably attached to the surface of the film bag and covering the bag opening. By partially peeling the label from the film bag, the bag opening can be opened and a first adhesive layer, which is part of the label, can be exposed on the surface of the film bag around the bag opening.

[0003] Patent No. 5160195

[0004] The sheet packaging includes a first adhesive layer that is exposed around the bag opening when the label is partially peeled off, and a second adhesive layer that adheres the remaining portion of the label to the film bag. During normal use, the first adhesive layer peels off and becomes exposed, and even after peeling, the second adhesive layer remains adhered to the film bag, allowing a portion of the label to separate. However, when the sheet packaging is used in a low-temperature environment (e.g., below freezing), the adhesive strength of the first adhesive layer and the second adhesive layer changes, making it impossible to achieve a state in which the first adhesive layer peels off without the second adhesive layer peeling off. As a result, the label sometimes does not peel off in the intended manner, preventing the formation of an access opening.

[0005] The present invention has been made in consideration of the above-mentioned problems, and aims to prevent the problem of an outlet being unable to be formed in a sheet packaging body in which the outlet is blocked before use and opened when the label is partially peeled off during use.

[0006] A sheet packaging product according to one aspect includes an assembly of multiple sheets, a bag body that packages the assembly and has a bag opening that forms an access point for the sheets, and a label that covers the bag opening and is removably attached to the surface of the bag body. The label includes a first resin layer, a silicone layer that abuts the bag body-facing surface of the first resin layer and contains silicone, a first adhesive layer that abuts the bag body-facing surface of the silicone layer and has a first adhesive, a second resin layer that abuts the bag body-facing surface of the first adhesive layer, and a cutting portion that forms a label opening that forms an access point for the sheets. The cutting portion is not formed in the first resin layer but is formed in the second resin layer. When the first resin layer is pulled from the upstream side to the downstream side in the opening direction, a portion of the second resin layer separates via the cutting portion, and the separated portion of the second resin layer peels off together with the first resin layer to form the label opening. The label has a first region extending downstream from the upstream edge of the cutting portion in the tearing direction, and a second region extending downstream from the downstream edge of the cutting portion in the tearing direction. The silicone layer and the first adhesive layer are provided in the first region and the second region. The basis weight of the silicone in the first region is lower than the basis weight of the silicone in the second region.

[0007] A packaging label according to one embodiment is removably attached to the surface of a bag that packages a collection of multiple sheets and covers the bag opening of the bag in an openable and closable manner. The label includes a first resin layer, a silicone layer containing silicone and abutting the bag-side surface of the first resin layer, a first adhesive layer abutting the bag-side surface of the silicone layer and a first adhesive, a second resin layer abutting the bag-side surface of the first adhesive layer, and a cutting portion that forms a label opening that serves as an access point for the sheet. The cutting portion is not formed in the first resin layer but is formed in the second resin layer. When the first resin layer is pulled from the upstream side to the downstream side in the opening direction, a portion of the second resin layer separates through the cutting portion, and the separated portion of the second resin layer peels off together with the first resin layer to form the label opening. The label includes a first region extending downstream from the upstream edge of the cutting portion in the opening direction and a second region extending downstream from the downstream edge of the cutting portion in the opening direction. The silicon layer and the first adhesive layer are provided in the first region and the second region, and the basis weight of the silicon in the first region is lower than the basis weight of the silicon in the second region.

[0008] Fig. 1 is a perspective view of a sheet structure including a sheet wrapping body and an exterior body. Fig. 2 is a plan view of the sheet wrapping body. Fig. 2(A) shows a state in which the label has not been separated and an outlet has not been formed, and Fig. 2(B) shows a state in which the label has been separated and an outlet has been formed. Fig. 3 is a schematic cross-sectional view taken along line A-A shown in Fig. 2(A). Fig. 4 is a schematic cross-sectional view taken along line B-B shown in Fig. 2(B). Fig. 5 is a partial enlarged view of part C in Fig. 2(B). Fig. 6 is a schematic enlarged view of part D shown in Fig. 5.

[0009] (1) Overview of the Embodiments The present specification and the accompanying drawings make at least the following clear. Aspect 1 of the invention is a sheet packaging body. The sheet packaging body includes an assembly of multiple sheets, a bag body that packages the assembly and has a bag opening that forms an access point for the sheets, and a label that covers the bag opening and is removably attached to the surface of the bag body. The label includes a first resin layer, a silicone layer that abuts the bag body-facing surface of the first resin layer and contains silicone, a first adhesive layer that abuts the bag body-facing surface of the silicone layer and has a first adhesive, a second resin layer that abuts the bag body-facing surface of the first adhesive layer, and a cutting portion that forms a label opening that forms the access point for the sheets. The cutting portion is not formed in the first resin layer but is formed in the second resin layer. When the first resin layer is pulled from the upstream side to the downstream side in the opening direction, a portion of the second resin layer separates via the cutting portion, and the separated portion of the second resin layer peels off together with the first resin layer to form the label opening. The label has a first region extending downstream from the upstream edge of the cutting portion in the tearing direction and a second region extending downstream from the downstream edge of the cutting portion in the tearing direction. The silicone layer and the first adhesive layer are provided in the first region and the second region. The basis weight of the silicone in the first region is lower than the basis weight of the silicone in the second region. According to this aspect, the silicone in the first region has a lower basis weight, making it less likely to peel from the first adhesive. Therefore, when the label is separated, peeling between the first adhesive layer and the silicone layer in the first region is suppressed, and the second resin layer separated via the cutting portion can be peeled together with the first resin layer to form a label opening and an access port. Furthermore, because the basis weight of the silicone layer is high in the second region, the first adhesive layer and the silicone layer can be separated. Therefore, when the label is separated, the silicone layer and the first adhesive layer can be peeled together in the second region, and the silicone layer can be peeled together with the first resin layer to expose the first adhesive layer. By exposing the first adhesive layer around the label opening after forming the label opening, the sheet packaging body after the label opening is formed can be adhered to the outer packaging body via the first adhesive layer, and the sheet can be held hygienically.

[0010] According to a preferred aspect, the invention according to Aspect 2 may have the following features in the invention according to Aspect 1. The label has a third region extending downstream from the upstream edge of the label in the opening direction. The third region is not provided with the first adhesive layer, but is provided with the silicone layer. In the third region, the second resin layer and the silicone layer releasably overlap. In the third region extending downstream from the upstream edge of the label in the opening direction, the first adhesive layer is not provided, and the second resin layer and the silicone layer releasably overlap. Therefore, the label can be separated by grasping the portion of the silicone layer facing the first resin layer. Furthermore, when the label is peeled downstream in the opening direction via the silicone layer, it reaches the first region where the silicone layer and the first adhesive layer abut. At this time, because the basis weight of the silicone in the first region is low, the first region does not continue to peel via the silicone layer, but maintains its adhesion to the first adhesive layer via the silicone layer. Therefore, the second resin layer separated via the cut portion can be separated together with the first resin layer, forming a label opening in the intended manner.

[0011] According to a preferred aspect, the invention according to Aspect 3 may have the following features in the invention according to Aspect 1 or Aspect 2. The label has a fourth region extending upstream from the upstream edge of the cut portion in the tearing direction to the third region. The silicone layer is provided in the fourth region. The basis weight of the silicone in the fourth region is higher than the basis weight of the silicone in the first region. According to this aspect, since the basis weight of the silicone in the fourth region is higher than the basis weight of the silicone in the first region, the first resin layer and the first adhesive layer can be peeled off via the silicone layer. Furthermore, since the first adhesive layer is not provided in the third region, which is located upstream of the fourth region, the first resin layer can be peeled off from the second resin layer in the region from the upstream edge of the label in the tearing direction to the upstream edge of the cut portion (the region including the third and fourth regions). Furthermore, because the basis weight of the silicon in the first region is low, the bond between the first resin layer and the second resin layer can be maintained via the first adhesive layer in the region (first region) extending from the upstream edge of the cutting portion toward the downstream side without peeling the first resin layer from the first adhesive layer via the silicon layer. Therefore, the second resin layer separated via the cutting portion can be separated together with the first resin layer, forming a label opening in the intended manner.

[0012] According to a preferred aspect, the invention according to Aspect 4 may have the following features in the invention according to any one of Aspects 1 to 3. The first adhesive layer is provided in the four regions. According to this aspect, when the label is separated, the silicone layer and the first adhesive layer peel off in the fourth region, exposing the first adhesive layer. The first adhesive layer is disposed around the label opening, and the sheet packaging body can be adhered to an outer packaging body or the like via the first adhesive layer. This makes it possible to prevent excessive evaporation of liquid through the label opening and to reduce the space around the label opening, thereby maintaining the sheet hygienically.

[0013] According to a preferred aspect, the invention according to Aspect 5 may have the following characteristics in the invention according to any one of Aspects 1 to 4. The silicon layer is arranged in a plurality of rectangular regions in a plan view in the first region. According to this aspect, by arranging the silicon layer in a plurality of rectangular regions, it is easier to maintain a constant distance between the regions compared to an embodiment in which the silicon layer is arranged in a plurality of circular regions, and unevenness in the silicon can be suppressed. Therefore, by adjusting the basis weight based on the area ratio of the silicon, it is easy to adjust the peel strength of the silicon in a desired manner.

[0014] According to a preferred aspect, the invention according to Aspect 6 may have the following features in the invention according to any one of Aspects 1 to 5: the area ratio of silicon in the silicon layer in the first region is 40% or less; and the area ratio of silicon in the silicon layer in the second region is 50% or more. This aspect can preferably achieve the effect of suppressing peeling between the first adhesive layer and the silicon layer in the first region and forming a label opening and an outlet, while preferably achieving the effect of peeling between the silicon layer and the first adhesive layer in the second region, peeling the silicon layer together with the first resin layer, and exposing the first adhesive layer.

[0015] According to a preferred aspect, the invention according to Aspect 7 may have the following features in any of the inventions according to Aspects 1 to 6. The label has a fifth region disposed around the cut portion downstream of the first region in the tearing direction and upstream of the second region in the tearing direction. The silicone layer is provided in the fifth region. The basis weight of the silicone in the fifth region is higher than the basis weight of the silicone in the first region. When partially separating the label, in the region upstream of the tearing direction (e.g., the first region), the user can easily apply appropriate force along the tearing direction and peel the label in the intended manner. However, in the fifth region, which is one of the regions downstream of the tearing direction, the user may find it difficult to apply appropriate force along the tearing direction and peel the label in the intended manner. According to this aspect, the basis weight of the silicone is greater than that of the first region and increases from upstream to downstream in the tearing direction. Therefore, the label opening can be formed by peeling the label through the silicone layer in the intended manner even downstream of the tearing direction.

[0016] According to a preferred aspect, the invention according to Aspect 8 may have the following features in the invention according to any one of Aspects 1 to 7. The label includes a second adhesive layer abutting the bag-side surface of the second resin layer and having a second adhesive, and a second silicone layer abutting the bag-side surface of the second adhesive layer and having silicone. The label has a third region extending downstream from the upstream edge of the label in the opening direction. The second adhesive layer is provided across the first region and the third region. The second silicone layer is not provided in the third region, but is provided in the first region. According to this aspect, in the third region, the second silicone layer is not disposed on the inner surface side of the second adhesive layer, and the second adhesive layer is adhered to the bag, allowing the label to be bonded to the bag via the second adhesive layer. Therefore, the label can be partially separated via the cut portion, and the label in the region other than the separated portion remains adhered to the bag, maintaining the label opening. In addition, since the second silicone layer is provided between the second adhesive layer and the bag body in the first region, when the label is partially separated via the cutting portion, the label can be easily peeled from the bag body in the first region. By smoothly peeling the label from the bag body in the first region, which is the upstream edge in the opening direction, the cutting portion can be smoothly broken to form a label opening.

[0017] According to a preferred aspect, the invention according to Aspect 9 may have the following features in the invention according to any one of Aspects 1 to 8. The label has a second adhesive layer abutting the bag-side surface of the second resin layer and including a second adhesive. The adhesive strength of the first adhesive may be higher than that of the second adhesive. According to this aspect, the high adhesive strength of the first adhesive allows the first adhesive layer exposed after partially separating the label to adhere the sheet package after the label opening has been formed to the exterior body via the first adhesive layer, thereby maintaining the sheet hygienically. On the other hand, the low adhesive strength of the second adhesive allows the separated portion of the label to be easily peeled from the bag when partially separating the label. Furthermore, the second adhesive is exposed on the bag-side surface of the separated portion after partially separating the label. The second adhesive disposed in the separated portion is separated from the bag containing the sheet and is not used to adhere the sheet package after the label opening has been formed to the exterior body, unlike the first adhesive. Therefore, even if the adhesive strength of the second adhesive is low, it does not have much impact on maintaining the sheet hygienically.

[0018] A tenth aspect of the invention is a label for a package. The label for a package is removably attached to the surface of a bag that packages a collection of multiple sheets and covers an opening of the bag in a freely openable and closable manner. The label includes a first resin layer, a silicone layer that abuts the bag-side surface of the first resin layer and contains silicone, a first adhesive layer that abuts the bag-side surface of the silicone layer and contains a first adhesive, a second resin layer that abuts the bag-side surface of the first adhesive layer, and a cutting portion that forms a label opening that serves as an access point for the sheet. The cutting portion is not formed in the first resin layer but is formed in the second resin layer. When the first resin layer is pulled from the upstream side to the downstream side in the opening direction, a portion of the second resin layer separates via the cutting portion, and the separated portion of the second resin layer peels off together with the first resin layer to form the label opening. The label has a first region extending downstream from the upstream edge of the cutting portion in the tearing direction and a second region extending downstream from the downstream edge of the cutting portion in the tearing direction. The silicone layer and the first adhesive layer are provided in the first region and the second region. The basis weight of the silicone in the first region is lower than the basis weight of the silicone in the second region. According to this aspect, the silicone in the first region has a lower basis weight, making it less likely to peel from the first adhesive. Therefore, when the label is separated, peeling between the first adhesive layer and the silicone layer in the first region is suppressed, and the second resin layer separated via the cutting portion can be peeled together with the first resin layer to form a sheet removal opening. Furthermore, in the second region, the basis weight of the silicone layer is high, allowing the first adhesive layer and the silicone layer to be separated. Therefore, when the label is separated, the silicone layer and the first adhesive layer can be peeled off in the second region, and the silicone layer can be peeled off together with the first resin layer to expose the first adhesive layer. By exposing the first adhesive layer around the label opening, the bag body after the label opening is formed can be adhered to an outer body or the like via the first adhesive layer, allowing the sheet to be held hygienically.

[0019] (2) Overall Configuration of Sheet Packaging Body The sheet packaging body 2 according to the embodiment will be described below with reference to the drawings. Note that in the following description of the drawings, identical or similar parts are designated by identical or similar reference numerals. However, it should be noted that the drawings are schematic, and the ratios of the dimensions may differ from those of the actual product. Therefore, specific dimensions should be determined with reference to the following description. Furthermore, the drawings may include parts with different dimensional relationships and ratios. Furthermore, for the sake of convenience, the cross-sectional views show components spaced apart, even though in the actual product, there are some parts where the components are in contact with each other.

[0020] The sheet packaging body 2 of this embodiment contains an assembly 4 of multiple sheets 41, and is attached to an exterior body 3 for use. The exterior body 3 contains the sheet packaging body 2 and has an exterior opening 32 that overlaps with the removal opening 5 for the sheets 41 in the sheet packaging body 2. The sheets 41 are removed through the exterior opening 32 and the removal opening 5. FIG. 1 is an exploded perspective view of a sheet structure 1 including the sheet packaging body 2 and the exterior body 3, showing a state in which the sheet packaging body 2 is not contained in the exterior body 3. Note that the sheet packaging body 2 may also be used alone without being contained in the exterior body 3.

[0021] The sheet structure 1 has a sheet wrapping body 2 and an exterior body 3. The sheet structure 1 has a top surface 11, a bottom surface 12 opposite the top surface 11, a left side surface 15 covering the side surface of the assembly 4, a right side surface 16, a front surface 13, and a back surface 14. The top surface 11 is the surface on which the bag opening 22 of the sheet wrapping body 2 is located, and the surface on which the exterior opening 32 of the exterior body 3 is located. The sheet structure 1 has a third direction D3 which is the height direction, and first and second directions D1 and D2 which extend in the planar direction and are perpendicular to each other.

[0022] The sheet packaging body 2 includes at least an assembly 4, a bag 20, and a label (packaging label) 100. The assembly 4 includes a plurality of sheets 41. The assembly 4 may be formed by stacking a plurality of separate sheets 41. For example, the assembly 4 may be formed by folding a plurality of sheets 41 and stacking the sheets 41 in the thickness direction. The sheets 41 may be at least folded around a fold line FL along the first direction D1. In the folded state, adjacent sheets 41 may be arranged alternately in the third direction D3. The assembly 4 may be folded along a fold line other than the fold line FL, either before or after the fold line FL. In other words, the sheets 41 may be folded around a fold line along the second direction D2, and then folded around a fold line along the first direction D1. In the present invention, the fold line FL along the first direction D1 is a fold line that serves as a base point when the sheets 41 are unfolded from the assembly 4.

[0023] When the sheet 41 is folded, the first direction D1 may be a direction along the fold FL of the assembly 4. The first direction D1 may be the longitudinal direction of the sheet structure 1 as in the present embodiment, or in a modified example, the first direction D1 may be the lateral direction of the sheet structure 1. Furthermore, in a modified example, the assembly 4 may be formed by connecting a plurality of sheets 41 with weak portions interposed therebetween, and may be, for example, a continuous body of a plurality of continuous sheets 41 wound into a roll.

[0024] The sheet 41 may be a dry sheet (e.g., nonwoven fabric, paper towel) or a wet sheet (e.g., wet tissue). The sheet 41 of this embodiment is a wet tissue impregnated with a liquid (medicine, etc.) containing alcohol. The wet tissue may be impregnated with the liquid in the sheet 41, for example, 100 parts by mass of the assembly (in a dry state) may be impregnated with 150 to 300 parts by mass of the liquid.

[0025] The bag body 20 has a bag opening 22 that packages the assembly 4 and forms the removal opening 5 for the sheet 41. The bag opening 22 is a portion surrounded by a cut portion 26 (see FIG. 3 ). The cut portion 26 is formed by a fragile portion such as a perforation or a cut line, and is formed over the entire sheet located above the sheet in the bag body. The cut portion 110 forms the outer edge of the bag opening 22. The bag body 20 formed in the bag body 20 is configured to contain the entire assembly 4. The bag body 20 may be made of a film. The material of the film is not particularly limited, and may be, for example, a mixture of polypropylene and polyethylene. The bag opening 22 may be located on the upper surface 11 side. When the sheet packaging body 2 is used while being contained in an exterior body 3, the exterior opening 32 is located so as to overlap at least a portion of the bag opening 22 when the sheet packaging body 2 is attached to the exterior body 3.

[0026] The dimensions of the bag opening 22 need only be such that each sheet 41 can be pulled out. The shape of the bag opening 22 may be elliptical, horizontally (vertically) circular, or regular circular in plan view, and is not limited thereto. Preferably, the bag opening 22 is curved and does not have sharp corners to prevent the sheets 41 from getting caught. The bag opening 22 may be disposed at the center of the sheet packaging body 2 in the first direction D1 and the second direction D2.

[0027] The label 100 is removably attached to the surface of the bag body 20 and covers the bag opening 22 before use. When using the sheet 41, such as when attaching the sheet packaging body 2 to the exterior body 3, the user partially separates the label 100 to expose the bag opening 22 and arranges the label 100 so that the bag opening 22 overlaps the exterior opening 32. Fig. 2(A) shows the label 100 in an unseparated state, while Fig. 2(B) shows the label 100 in a partially separated state, exposing the bag opening 22. The configuration of the label 100 will be described in detail below.

[0028] The exterior body 3 has an exterior opening 32 that serves as an outlet for the sheets 41. The exterior opening 32 is configured to be positioned so as to overlap at least a portion of the outlet 5 of the sheet packaging body. The exterior opening 32 may be positioned so as to overlap a portion of the outlet 5, or may be positioned so as to overlap the entirety of the outlet 5. The exterior body 3 may have a base portion 37 that is positioned around the exterior opening 32. The base portion 37 is positioned to surround the exterior opening 32. The base portion 37 may have a separation guide portion 34. The separation guide portion 34 protrudes inward from the outer edge of the exterior opening 32 and is configured to guide separation of the sheets 41 from each other. More specifically, the separation guide portion 34 protrudes from the center of the exterior opening 32 in one of the first direction D1 and the second direction D2 toward the inside in the other of the first direction D1 and the second direction D2, and guides separation of the sheets 41 from each other. The separation guide portion 34 in this embodiment may be a portion that protrudes inward in the second direction D2 beyond the outer edge of the exterior opening 32 in the second direction D2. Note that, in a modified example, the separation guide portion 34 may be a portion that protrudes inward in the first direction D1 beyond the outer edge of the exterior opening 32 in the first direction D1. The user pulls the sheet 41 outward from the sheet structure 1 through the bag opening 22 and the exterior opening 32. At this time, the separation guide portion 34 abuts the sheet 41, and when both the sheet to be removed and the next sheet 41 (located on the bottom side) are about to be pulled out, the separation guide portion 34 functions to pull out only the sheet to be removed.

[0029] The exterior body 3 may have an exterior lid portion 36 that covers the exterior opening 32 and the base portion 37 in an openable and closable manner. The exterior lid portion 36 may be configured to cover the exterior opening 32 and expose the exterior opening 32, with a hinge portion 38 as the opening / closing base. When removing the sheet 41, a user opens the exterior lid portion 36 using the hinge portion 38 as the opening base, and when not removing the sheet 41, the user closes the exterior lid portion 36 to cover the exterior opening 32. The exterior body 3 may have the exterior opening 32, the base portion 37, the exterior lid portion 36, and the hinge portion 38, and may be configured to be attached only to the top surface of the sheet packaging body 2 (a so-called wet tissue lid), or may have an enclosing portion 39 that encloses the entire sheet packaging body 2. The exterior body 3 of this embodiment has the enclosing portion 39. The enclosing portion 39 has a top surface region that extends outward from the exterior opening 32 and the base portion 37 on the top surface 11, a bottom surface region that is disposed on the bottom surface 12, and side surfaces that are disposed on the left side surface 15, the right side surface 16, the front surface 13, and the rear surface 14. The bottom surface region or the top surface region is configured to be detachable or openable / closable relative to the side surfaces, and is configured to allow the sheet wrapping body 2 to be inserted into and removed from the exterior body 3.

[0030] Next, the label 100 of the sheet packaging body 2 will be described in detail. Fig. 3 is a schematic cross-sectional view taken along line A-A shown in Fig. 2(A). Fig. 4 is a schematic cross-sectional view taken along line B-B shown in Fig. 2(B). Fig. 5 is a partial enlarged view of part C in Fig. 2(B). The label 100 has an inner side T101 and an outer side T102 opposite the inner side T101. The outer side T102 is the outer side of the sheet packaging body 2, and the inner side T101 is the bag body 20 side. The label 100 is constructed by laminating multiple layers. The label 100 of this embodiment is laminated in the following order from the outer side T102 to the inner side T101: outer layer 101, outer adhesive layer 102, printed layer 103, first resin layer 104, first silicone layer 105, first adhesive layer 106, second resin layer 107, second adhesive layer 108, and second silicone layer 109. The label 100 according to the present invention is required to have at least the first resin layer 104, the first silicone layer 105, the first adhesive layer 106, and the second resin layer 107. The first silicone layer 105 constitutes the "silicone layer" of the present invention.

[0031] The outer layer 101 is the outermost layer and constitutes the outer surface of the label 100. The outer layer 101 is transparent or translucent and may be made of a laminating resin that protects the printed layer 103. The outer adhesive layer 102 bonds the outer layer 101 and the printed layer 103. The printed layer 103 is a layer on which printing is performed to display decoration or information. The outer layer 101, the outer adhesive layer 102, and the printed layer 103 may be arranged over the entire area of ​​the label 100 in a plan view.

[0032] The first resin layer 104 is located closer to the inner surface T101 than the printed layer 103 and closer to the outer surface T102 than the first silicone layer 105, the first adhesive layer 106, and the second resin layer 107. The first resin layer 104 is configured so that, when the label 100 is properly separated, the entire first resin layer 104 is peeled off from the bag body 20 without breaking. The first resin layer 104 may be disposed over the entire area of ​​the label 100 in a planar view. The first resin layer 104 may be made of resin, and in this embodiment, the first resin layer 104 is made of foamed PET (extruded foam-molded polyester resin). The thickness of the first resin layer 104 may be 30 μm to 70 μm, and in this embodiment, the thickness of the first resin layer is 50 μm.

[0033] The first silicon layer 105 abuts the inner surface (T101) of the first resin layer 104 and contains silicon. The first silicon layer 105 may be formed by applying silicon to the inner surface of the first resin layer 104. The first silicon layer 105 may be formed of a silicone resin as long as it contains silicon (silicon). The first silicon layer 105 is configured to be easily peeled from an adhesive layer containing an adhesive. Regions of the first silicon layer 105 with a high silicon basis weight are easily peeled from the adhesive layer, while regions of the first silicon layer 105 with a low silicon basis weight are more difficult to peel from the adhesive layer than regions with a high silicon basis weight. The first silicon layer 105 abuts the first adhesive layer 106, and the ease of peeling from the first adhesive layer 106 is adjusted by the basis weight of the silicon. The first silicon layer 105 may be disposed at least around the cutting portion 110 that forms the label opening 125. In FIG. 2B, the region where the first silicon layer 105 is provided is indicated by hatching.

[0034] The first adhesive layer 106 abuts against the inner surface T101 of the first silicon layer 105 and includes a first adhesive. An example of the first adhesive is a hot-melt adhesive. The first adhesive is provided in at least a region overlapping the label opening 125. The region overlapping the label opening 125 includes a region where the first adhesive layer 106 and the first resin layer 104 abut without the first silicon layer 105. The region where the first adhesive layer 106 and the first resin layer 104 abut without the first silicon layer 105 is surrounded by the shaded region in FIG. 2B (the region where the first silicon layer 105 is disposed). The region where the first adhesive layer 106 and the first resin layer 104 abut is provided in a region surrounded by the cut portion 110.

[0035] The second resin layer 107 abuts against the inner surface side T101 of the first adhesive layer 106. A cutting portion 110 is formed in the second resin layer 107, and a label opening 125 is formed therein. The second resin layer 107 may be disposed over the entire area of ​​the label 100 in a plan view. The second resin layer 107 may be made of resin, and in this embodiment, the second resin layer 107 is made of PET (polyethylene terephthalate). The thickness of the second resin layer 107 may be 30 μm to 70 μm, and in this embodiment, the thickness of the second resin layer 107 is 50 μm.

[0036] The second adhesive layer 108 abuts against the inner surface side T101 of the second resin layer 107 and has a second adhesive. An example of the second adhesive is a hot melt adhesive. The second adhesive layer 108 bonds the label 100 to the bag body 20. A cutting portion 110 is formed in the second adhesive layer 108, and a label opening 125 is formed. The second adhesive layer 108 may be disposed over the entire area of ​​the label 100 in a plan view. The bag body side T101 surface of the second adhesive layer 108 abuts against and adheres to the bag body 20. The second adhesive layer 108 is adhered to a portion (bag separation portion) surrounded by the cutting portion 26 that forms the bag opening 22, and therefore, when the label 100 is separated, the bag separation portion is also separated, forming the bag opening 22. In addition, the label 100 in this embodiment has the second adhesive layer 108, but in a modified example, an adhesive layer equivalent to the second adhesive layer 108 may be provided on the bag body 20, and the label 100 may not have the second adhesive layer 108.

[0037] The second silicon layer 109 abuts against the inner surface T101 of the second adhesive layer 108 and contains silicon. The second silicon layer 109 only needs to contain silicon (silicon) and may be made of silicone resin. The second silicon layer 109 straddles the upstream edge 111 of the cutting portion 110 in the opening direction P and may straddle the area surrounded by the cutting portion 110 and the area outside the surrounded area.

[0038] The label 100 is configured to be partially separable. When a portion of the label 100 is separated, a label opening 125 that forms the dispensing opening 5 is formed. As shown in Figures 2(A) and 3, the label 100 is attached to the surface of the bag body 20 in an unseparated state (when the dispensing opening 5 is not formed). When the multiple layers of the label 100 are peeled apart and some of the layers are separated, the label opening 125 is formed. The label opening 125 is a portion surrounded by a cutting portion 110. The cutting portion 110 is configured by a fragile portion such as a perforation or a cutting line, and is formed over a certain range in the thickness direction across the multiple layers. The cutting portion 110 forms the outer edge of the label opening 125.

[0039] The cut portion 110 is not formed across the entire thickness of the label 100. The cut portion 110 is not formed in the first resin layer 104, but in the second resin layer 107. More specifically, the cut portion 110 is not formed in the first resin layer 104, and is not formed in a layer on the outer surface side T102 of the first resin layer 104. The cut portion 110 in this embodiment is formed only on the inner surface side T101 of the boundary between the first resin layer 104 and the first adhesive layer 106. The region on the inner surface side of the boundary including the second resin layer 107 is separated via the cut portion 110, but the region on the outer surface side of the boundary including the first resin layer 104 does not have the cut portion 110 and is not separated via the cut portion 110. When a portion of the second resin layer 107 on the outer surface side T102 of the boundary including the first resin layer 104 is pulled from the upstream side P1 to the downstream side P2 in the opening direction P, a part of the second resin layer 107 separates through the cutting portion 110, and the separated portion of the second resin layer 107 peels off together with the first resin layer 104 to form a label opening 125. The separated portion of the second resin layer 107 is the portion surrounded by the cutting portion 110.

[0040] As shown in Figure 4, when the label opening 125 is formed, a part of the bag body 20 (referred to as the bag separating portion) is separated from the bag body 20 along with the part of the label 100 that is separated (referred to as the label separating portion). When both the label separating portion and the bag separating portion are separated, a bag opening 22 is formed in the bag body 20 by separation of the bag separating portion, and a label opening 125 is formed in the label 100 by separation of the label separating portion. As shown in Figure 4, the take-out opening 5 is formed by the area where the label opening 125 and the bag opening 22 overlap. The label opening 125 in this embodiment is formed to be slightly larger than the bag opening 22 in a plan view. The entire bag opening 22 is covered by the label opening 125.

[0041] The line L100 in Figure 3 indicates the separation line that separates the label 100 when the dispensing opening 5 is formed. The label 100 is separated by being pulled from the upstream side P1 to the downstream side P2 in the opening direction P. The label 100 has an upstream edge 121 that is the edge of the upstream side P1 and a downstream edge 122 that is the edge of the downstream side P2. The separation line L100 is formed between the first resin layer 104 and the first adhesive layer 106 in the region from the upstream edge 121 toward the downstream side P2 to the upstream edge 111 of the cutting portion 110 in the opening direction P. The separation line L100 extends from the upstream edge 111 of the cutting portion 110 to the inner side T101 and reaches the surface of the inner side T101 of the label 100. The separation line L100 extends not only along the upstream edge 111 of the cutting portion 110 but also along the entire cutting portion 110 in a plan view toward the inner side T101, reaching the surface of the inner side T101 of the label 100. Therefore, the separation line L100 forms a ring along the cutting portion 110. The area surrounded by the cutting portion 110 becomes a label separation portion that can be separated from the area outside the cutting portion 110. The separation line L100 is close to the cutting portion 26 of the bag body 20, and the bag separation portion surrounded by the cutting portion 26 separates from the bag body together with the label separation portion. The separation line L100 is formed between the first resin layer 104 and the first adhesive layer 106 from the downstream edge 112 of the cutting portion 110 toward the downstream side P2. When the label 100 configured in this manner is properly separated, the label opening 125 and the bag opening 22 form a dispensing opening 5, as shown in FIG. 4 .

[0042] When the label 100 is properly separated as described above, the first adhesive layer 106 peels off without the second adhesive layer 108 peeling off, and the peeling occurs between the appropriate layers (between the first silicone layer 105 and the first adhesive layer 106 in this embodiment), and a label opening 125 is formed in the label 100 through the cutting portion 110. However, in the use environment of the sheet packaging body 2, for example, in a low-temperature environment (e.g., below freezing), the adhesive strength of the first adhesive layer 106 and the second adhesive layer 108 changes, and it is sometimes impossible to achieve a state in which the first adhesive layer 106 peels off without the second adhesive layer 108 peeling off. For example, the adhesive strength of the first adhesive layer 106 decreases, causing the first adhesive layer 106 and the second resin layer 107 to peel off in the area surrounded by the cutting portion 110, which makes it impossible to separate the entire area surrounded by the cutting portion 110, resulting in a problem in which the access opening 5 cannot be formed. Furthermore, the adhesive strength of the outer adhesive layer 102 may decrease, causing the outer adhesive layer 102 and the printed layer 103 to peel off, making it impossible to separate the entire area surrounded by the cut portion 110, and resulting in a problem in which the outlet 5 cannot be formed. To prevent these problems, increasing the adhesive strength of the adhesive layer may be considered. However, if the adhesive strength is made too high, other components may be unintentionally broken. More specifically, if the adhesive strength of the adhesive layer is increased, for example, the first resin layer 104 may break, resulting in a problem in which the outlet 5 cannot be formed.

[0043] The sheet packaging body 2 according to the present invention is configured to resolve the problem of being unable to form the sheet removal opening 5. Next, a detailed description will be given of the configuration for resolving the problem of being unable to form the removal opening 5. The label 100 has multiple regions in a plan view, and the basis weight of the silicon in the first silicon layer 105 is adjusted depending on the region, thereby suppressing the problem of being unable to form the removal opening 5.

[0044] The label 100 has multiple regions in a plan view. Each region is shown in Figure 5. In a plan view, the label 100 has a first region R1 extending from an upstream edge 111 of the cutting portion 110 in the opening direction P to a downstream side P2. The first region R1 only needs to include the upstream edge 111 of the cutting portion 110 in the opening direction P, and may straddle the upstream edge 111 of the cutting portion 110 in the opening direction P. The range of the first region R1 in the opening direction P may be 1 mm to 5 mm from the upstream edge 111 toward the downstream side P2, and 1 mm to 5 mm from the upstream edge 111 toward the upstream side P1.

[0045] The label 100 has, in a plan view, a second region R2 extending from the downstream edge 112 of the cutting portion 110 in the opening direction P to the downstream side P2. The second region R2 only needs to include the downstream edge 112 of the cutting portion 110 in the opening direction P, and may straddle the downstream edge 112 of the cutting portion 110 in the opening direction P. The range of the second region R2 in the opening direction P may be 1 mm to 5 mm from the downstream edge 112 toward the downstream side P2, and 1 mm to 5 mm from the downstream edge 112 toward the upstream side P1.

[0046] The label 100 has a third region R3 extending from the upstream edge 121 to the downstream side P2 in the opening direction P of the label 100 in a plan view. The first adhesive layer 106 is not disposed in the third region R3. Therefore, in the third region R3, the layers on the outer surface side T102 of the first adhesive layer 106 (the outer layer 101, the outer adhesive layer 102, the printed layer 103, the first resin layer 104, and the first silicone layer 105) are stacked so as to be separable from the second resin layer 107, and function as a grip portion when opening the label 100. The edge of the downstream side P2 of the third region may be 5 mm or more and 10 mm or less from the upstream edge 121 of the label 100 toward the downstream side P2.

[0047] In a plan view, the label 100 has a fourth region R4 that extends from the upstream edge 111 of the cutting portion 110 toward the upstream side P1 to the third region R3. The fourth region R4 is a region sandwiched between the first region R1 and the third region R3 in the opening direction P. Therefore, the edge of the upstream side P1 of the fourth region R4 is the edge of the downstream side P2 of the third region R3, and the edge of the downstream side P2 of the fourth region R4 is the edge of the upstream side P1 of the first region R1.

[0048] The label 100 has a fifth region R5 disposed around the cutting portion 110 downstream P2 of the first region R1 in the opening direction P and upstream P1 of the second region R2 in the opening direction P in a plan view. The fifth region R5 may be provided in the center of the cutting portion 110 in the opening direction P, including an intermediate position 110C of the cutting portion 110. The fifth region R5 may be a region spanning the cutting portion 110.

[0049] The first silicon layer 105 and the first adhesive layer 106 are provided in the first region R1 and the second region R2. The basis weight of the silicon in the first silicon layer 105 in the first region R1 is lower than the basis weight of the silicon in the first silicon layer 105 in the second region R2. The basis weights of the silicon may be compared using a microscope or the like, based on the area where the silicon is applied, or based on the weight per unit area of ​​the region where the silicon is applied. The basis weight of the silicon in each region can also be compared, for example, using the following method. For example, when comparing the first region and the second region, a sheet portion including the first silicon layer 105 in the first region R1 and a sheet portion including the first silicon layer 105 in the second region R2 are cut out to obtain samples with the same planar dimensions and cuttable dimensions. The sheet portion including the first silicon layer 105 is a portion of the label that can be easily separated by hand, and may be, for example, the portion from the outer layer 101 to the first silicon layer 105. The weights of the cut-out samples of the first region R1 and the second region R2 are measured. The samples of the first region R1 and the second region R2 are identical in all layers (outer layer 101 to first resin layer 104) except for the first silicone layer 105. Therefore, differences in sample weight are determined to be due to differences in silicone weight, and a heavier sample among samples compared with the same dimensions is determined to be a region with a higher silicone basis weight. The silicone-attached region is more susceptible to peeling from the adhesive than the non-silicone region; the higher the silicone basis weight, the easier it is to peel from the adhesive, and the lower the silicone basis weight, the more difficult it is to peel from the adhesive. The first region R1 extends at least from the upstream edge 111 of the cutting portion 110 to the downstream side P2 in the opening direction P, and is the portion that is peeled off together with the first resin layer 104 when the label 100 is separated via the cutting portion 110 (e.g., the second resin layer 107). Depending on the manner in which label 100 is pulled and the method of applying force, first silicon layer 105 and first adhesive layer 106 may peel off together with first resin layer 104. In particular, when the temperature drops and the adhesive strength of the first adhesive decreases, the adhesive strength between first adhesive layer 106 and first silicon layer 105 cannot be ensured, and first adhesive layer 106 and first silicon layer 105 may peel off in first region R1, making it impossible to form label opening 125.However, the basis weight of the silicon in the first region R1 is low, making it difficult to peel from the first adhesive, which prevents the first adhesive layer 106 and the first silicon layer 105 from peeling off in the first region R1 during label separation, and the second resin layer 107 separated via the cutting portion 110 can be peeled off together with the first resin layer 104 to form the label opening 125.

[0050] The second region R2 extends from the downstream edge 112 of the cutting portion 110 toward the downstream side P2 in the opening direction P. In the second region R2, the basis weight of the first silicone layer 105 is high, allowing the first adhesive layer 106 and the first silicone layer 105 to be separated. Therefore, when the label 100 is separated, the first silicone layer 105 and the first adhesive layer 106 can be peeled off in the second region R2, exposing the first adhesive layer 106 around the label opening 125 after forming the label opening 125. By exposing the first adhesive layer 106 around the label opening 125, the sheet packaging body 2 after the label opening 125 is formed can be adhered to the outer casing 3 or the like via the first adhesive layer 106, allowing the sheet to be held hygienically.

[0051] The first silicon layer 105 may be disposed across the entire cutting portion 110, straddling the cutting portion 110. That is, the first silicon layer 105 is provided in a peripheral region located around the cutting portion 110. The peripheral region includes a region surrounded by the cutting portion 110 and a region outside the surrounded region. In a plan view, the first silicon layer 105 may be provided across a certain range (e.g., a range of 5 mm or less) extending inward from the cutting portion 110 and a certain range (e.g., a range of 5 mm or less) extending outward from the cutting portion 110. To form the cutting portion 110, it is necessary to cut a portion of the layer of the label 100 in the thickness direction with a cutting blade. In this case, by providing the first silicon layer 105 in the region where the cutting portion 110 is to be formed, the adhesive constituting the adhesive layer can be prevented from adhering to the cutting blade. As shown in FIG. 5, the surrounding region may be a region including a first region R1, a third region R3, and a fifth region R5, and the first silicon layer 105 of this embodiment is provided along the cut portion 110 not only in the first region R1, the second region R2, and the fifth region R5, but also between the first region R1 and the second region R2 and between the second region R2 and the fifth region R5.

[0052] In this embodiment, the first silicon layer 105 is provided in the first region R1, the second region R2, the third region R3, the fourth region R4, and the fifth region R5. The first silicon layer 105 is not provided in a region surrounded by the cut portion 110 that is further inward than a certain range extending inward from the cut portion 110. In the region surrounded by the cut portion 110 where the first silicon layer 105 is not provided, the first resin layer 104 and the second resin layer 107 are bonded together via the first adhesive layer 106. Therefore, the second resin layer 107 in the portion surrounded by the cut portion 110 can be peeled off together with the first resin layer 104.

[0053] The third region R3 may not be provided with the first adhesive layer 106, but may instead be provided with the first silicone layer 105. In the third region R3, the second resin layer 107 and the first silicone layer 105 may releasably overlap. In the third region extending downstream from the upstream edge 121 of the label 100, the first adhesive layer 106 is not provided, and the second resin layer 107 and the first silicone layer 105 releasably overlap. This allows the label 100 to be separated by grasping the portion of the first silicone layer 105 facing the first resin layer 104. Furthermore, when the label 100 is peeled downstream P2 in the opening direction P via the first silicone layer 105, the label 100 reaches the first region R1 where the first silicone layer 105 and the first adhesive layer 106 abut. At this time, since the basis weight of the silicon of the first silicon layer 105 in the first region R1 is low, the first region R1 does not continue to peel through the silicon layer, but maintains an adhesive state to the first adhesive layer 106 side through the silicon layer, and the second resin layer 107 separated through the cutting portion 110 can be separated together with the first resin layer 104, thereby forming the label opening 125 in the intended manner.

[0054] The first silicon layer 105 may also be provided in the fourth region R4. The basis weight of the silicon of the first silicon layer 105 in the fourth region R4 may be the same as the basis weight of the silicon of the first silicon layer 105 in the first region R1. Alternatively, the basis weight of the silicon of the first silicon layer 105 in the fourth region R4 may be higher than the basis weight of the silicon of the first silicon layer 105 in the first region R1. When the basis weight of the silicon of the fourth region R4 is higher than the basis weight of the silicon of the first region R1, the first resin layer 104 and the first adhesive layer 106 can be peeled away from each other via the first silicon layer 105. Furthermore, since the first adhesive layer 106 is not provided in the third region R3 located on the upstream side P1 of the fourth region R4, the first resin layer 104 can be peeled away from the second resin layer 107 in the region from the upstream edge 121 of the label 100 to the upstream edge 111 of the cutting portion 110 in the tearing direction (the region including the third and fourth regions). At this time, because the basis weight of the silicon of the first silicon layer 105 in the first region R1 is low, the bonded state between the first resin layer 104 and the second resin layer 107 can be maintained via the first adhesive layer 106 in the region (first region) extending from the upstream edge 111 of the cutting portion 110 toward the downstream side P2. Therefore, the second resin layer 107 separated via the cutting portion can be separated together with the first resin layer 104, forming the label opening 125 in the intended manner. Preferably, the fourth region R4, which is configured with a relatively high basis weight of silicon, may be positioned across the edge of the upstream side P1 of the first adhesive layer 106 in the opening direction P. The first resin layer 104 and the first adhesive layer 106 can be smoothly peeled away from each other via the first silicon layer 105.

[0055] The first adhesive layer 106 may be provided in the fourth region R4. When the label 100 is separated, the first silicone layer 105 and the first adhesive layer 106 peel off in the fourth region R4, exposing the first adhesive layer 106. More specifically, the first adhesive layer 106 is exposed around the label opening 125, and the second resin layer 107 is exposed in the region where the first adhesive layer 106 is not provided. By exposing the first adhesive layer 106 around the label opening 125, the sheet packaging body 2 can be adhered to the inner surface of the outer package 3, etc., via the first adhesive layer 106. This prevents excessive evaporation of liquid through the label opening 125 and reduces the space around the label opening 125, allowing the sheet to be hygienically maintained.

[0056] FIG. 6 is an enlarged schematic diagram of portion D shown in FIG. 5 . The silicon-applied regions are unhatched regions (white regions) in FIG. 6 . The first silicon layer 105 is arranged in a plurality of rectangular regions R10. The rectangular regions R10 may be in contact with each other or spaced apart. Preferably, the rectangular regions are in contact with each other. According to this embodiment, by arranging silicon in a plurality of rectangular regions, it is easier to maintain a constant spacing between the regions compared to a configuration in which silicon is arranged in a plurality of circular regions, and unevenness in the silicon can be suppressed. Therefore, by adjusting the basis weight based on the silicon area ratio, etc., it is easy to adjust the peel strength of the silicon in a desired manner.

[0057] The basis weight of the silicon in the first silicon layer 105 may vary from region to region. The basis weight can be calculated based on the weight of silicon in the entire region. Silicone resin may be applied to the entire region, resulting in a different basis weight per unit area of ​​silicon for each region. Alternatively, the basis weight per unit area of ​​the applied silicone resin may be the same for each region, resulting in a different basis weight for silicon for each region. A configuration in which the area ratio of the silicone resin varies from region to region can be achieved by, for example, varying the size of the multiple regions (e.g., rectangular regions) or the shape of the multiple regions (e.g., rectangular, circular). For example, as shown in FIG. 6 , the area ratio of the silicon-applied region R11 in the first region R1 may be lower than the area ratio of the silicon-applied region R14 in the fourth region R4, and may be lower than the area ratio of the silicon-applied region R13 in the third region R3.

[0058] The silicon area ratio of the first silicon layer 105 in the first region R1 may be 40% or less, preferably 35% or less. In this embodiment, the silicon area ratio of the first silicon layer 105 in the first region R1 is 35%. Furthermore, the silicon area ratio of the first silicon layer 105 in the second region R2 may be 50% or more, preferably 80% or more, and more preferably 100% or more. In this embodiment, the silicon area ratio of the first silicon layer 105 in the second region R2 is 100%. The silicon area ratio of the first silicon layer 105 in the fourth region R4 may be the same as that of the first silicon layer 105. Alternatively, the silicon area ratio of the first silicon layer 105 in the fourth region R4 may be 50% or more, preferably 80% or more, and more preferably 100% or more. In this embodiment, the silicon area ratio of the first silicon layer 105 in the fourth region R4 is 50%. The area ratio of silicon in the first silicon layer 105 in the third region R3 may be 50% or more, preferably 80% or more, and more preferably 100% or more. In this embodiment, the area ratio of silicon in the first silicon layer 105 in the third region R3 is 50%. Furthermore, the area ratio of silicon in the first silicon layer 105 in the fifth region R5 may be 50% or more, preferably 80% or more, and more preferably 100% or more. In this embodiment, the area ratio of silicon in the first silicon layer 105 in the third region R3 and the area ratio of silicon in the first silicon layer 105 in the fifth region R5 are both 100%. In the peripheral region, the basis weight of silicon may increase stepwise from the upstream side P1 in the opening direction P toward the downstream side P2. For example, the basis weight of the silicon of the first silicon layer 105 may be lowest in the first region R1, higher in the intermediate region between the first region R1 and the fifth region R5 than the first region R1, higher in the fifth region R5 than the intermediate region, and higher in the second region R2 than the fifth region R5.

[0059] The first silicon layer 105 may also be provided in the fifth region R5. The basis weight of the silicon of the first silicon layer 105 in the fifth region R5 may be higher than the basis weight of the silicon of the first silicon layer 105 in the first region R1. When partially separating the label 100, in the region (e.g., the first region) upstream of the cutting section 110 in the opening direction P, the user can easily apply appropriate force along the opening direction and peel the label 100 in the intended manner. However, in the fifth region R5, which is one of the regions downstream of the cutting section 110 in the opening direction P2, the user may find it difficult to apply appropriate force along the opening direction and peel the label 100 in the intended manner. The basis weight of the silicon is greater than that of the first region R5, and increases from the upstream side P1 to the downstream side P2 in the opening direction P. Therefore, the label opening 125 can be formed by peeling the label 100 via the first silicon layer 105 in the intended manner, even downstream of the cutting section in the opening direction. Preferably, the basis weight of the silicon of the first silicon layer 105 in the fifth region R5 may be higher than the basis weight of the silicon of the first silicon layer 105 in the first region R1 and lower than the basis weight of the silicon of the first silicon layer 105 in the second region R2. The basis weight of the silicon of the first silicon layer 105 is in the order of first region > fifth region > second region, and gradually increases from the upstream side P1 to the downstream side P2 in the opening direction P. Therefore, the label opening 125 can be formed by peeling via the first silicon layer 105 in the intended manner even on the downstream side of the cut portion in the opening direction.

[0060] The second adhesive layer 108 may be provided across the first region R1 and the third region R3. More specifically, the second adhesive layer 108 may also be provided in a fourth region R4 located between the first region R1 and the third region R3, and may be provided across the first region R1, the third region R3, and the fourth region R4. The second silicon layer 109 may be provided in the first region R1, not in the third region R3. According to this aspect, in the third region R3, the second silicon layer 109 is not disposed on the inner surface side T101 of the second adhesive layer 108, and the second adhesive layer 108 is adhered to the bag body 20, allowing the label 100 to be bonded to the bag body 20 via the second silicon layer 109. Therefore, the label 100 can be partially separated via the cutting portion 110, and the label 100 in the region other than the separated portion can remain adhered to the bag body 20, maintaining the label opening 125. Furthermore, in the first region R1, the second silicon layer 109 is disposed between the second adhesive layer 108 and the bag body 20. Therefore, when the label 100 is partially separated via the cutting portion 110, the label 100 can be easily peeled from the bag body 20 in the first region R1. By smoothly peeling the label 100 from the bag body 20 in the first region R1, which is the upstream edge 111 of the cutting portion 110 in the opening direction P, the cutting portion 110 can be smoothly torn to form the label opening 125. Note that the second silicon layer 109 in this embodiment is provided across the first region R1 and the fourth region R4, and is not provided in the third region R3.

[0061] The adhesive strength of the first adhesive may be higher than that of the second adhesive. Because the adhesive strength of the first adhesive is high, the first adhesive layer exposed after partially separating the label 100 can adhere the sheet packaging body 2 after the label opening 125 is formed to the exterior body 3, etc., via the first adhesive layer, thereby maintaining the sheet hygienically. On the other hand, because the adhesive strength of the second adhesive is low, the separated portion of the label 100 can be easily peeled from the bag when partially separating the label 100. Furthermore, the second adhesive is exposed on the bag-facing surface of the separated portion after partially separating the label 100. The second adhesive disposed in the separated portion is separated from the bag containing the sheet, and unlike the first adhesive, it is not used to adhere the sheet packaging body 2 after the label opening 125 is formed to the exterior body 3. Therefore, even if the adhesive strength of the second adhesive is low, it does not have much impact on maintaining the sheet hygienically. It is preferable that the adhesive strength of the second adhesive be strong enough to attach the separated portion of the label 100 to the surface of the bag 20, etc., and maintain the separated portion.

[0062] Preferably, the adhesive strength of the adhesive layers may be in the order of outer adhesive layer 102 > first adhesive layer 106 > second adhesive layer 108. Furthermore, the breaking strength of the first resin layer may be higher than the peel strength of outer adhesive layer 102 from outer layer 101 and the peel strength of outer adhesive layer 102 from printed layer 103. The strength of the adhesive layer can be measured by the peel adhesion strength test method specified in JIS K 6854-2.

[0063] (3) Other Embodiments The above-described embodiment is a sheet packaging body 2, which includes a bag body 20 and a label 100. However, the present invention may be a packaging body label (the label 100 in the above-described embodiment) that is releasably attached to the surface of the bag body 20 that packages the assembly 4 of a plurality of sheets 41 and that opens and closes the bag opening 22 of the bag body 20. The packaging body label 100 is releasably attached to the surface of the bag body 20 that packages the assembly 4 of a plurality of sheets 41 and that opens and closes the bag opening 22 of the bag body 20. The label 100 includes a first resin layer 104, a silicone layer (first silicone layer 105) containing silicone and abutting the surface of the first resin layer 104 facing the bag 20, a first adhesive layer 106 abutting the surface of the silicone layer facing the bag 20 and containing a first adhesive, a second resin layer 107 abutting the surface of the first adhesive layer 106 facing the bag 20, and a cutting portion 110 that forms a label opening 125 that forms an outlet for the sheet 41. The cutting portion 110 is not formed in the first resin layer 104 but is formed in the second resin layer 107. When the first resin layer 104 is pulled from the upstream side P1 to the downstream side P2 in the opening direction P, a portion of the second resin layer 107 separates via the cutting portion 110, and the separated portion of the second resin layer 107 peels off together with the first resin layer 104 to form the label opening 125. The label 100 has a first region R1 extending from an upstream edge 111 of the cutting portion 110 in the tearing direction P to a downstream side P2, and a second region R2 extending from a downstream edge of the cutting portion 110 in the tearing direction P to a downstream side P2. The first silicon layer 105 and the first adhesive layer 106 are provided in the first region R1 and the second region R2. The basis weight of the silicon in the first silicon layer 105 in the first region R1 is lower than the basis weight of the silicon in the first silicon layer 105 in the second region R2. According to this aspect, the basis weight of the silicon in the first silicon layer 105 in the first region R1 is lower, making it less likely to peel from the first adhesive. Therefore, peeling between the first adhesive layer 106 and the first silicon layer 105 in the first region R1 is suppressed during label separation, and the second resin layer 107 separated via the cutting portion 110 can be peeled together with the first resin layer 104 to form the removal opening 5 for the sheet 41. Furthermore, in the second region R2, the basis weight of the first silicon layer 105 is high, so that the first adhesive layer 106 and the first silicon layer 105 can be separated.Therefore, when label 100 is separated, first silicon layer 105 and first adhesive layer 106 can be peeled off in second region R2, and first silicon layer 105 can be peeled off together with first resin layer 104, exposing first adhesive layer 106. By exposing first adhesive layer 106 around label opening 125, bag body 20 after label opening 125 is formed can be adhered to exterior body 3 or the like via first adhesive layer 106, and sheet 41 can be held hygienically.

[0064] Although the present invention has been described in detail using the above-described embodiments, it will be apparent to those skilled in the art that the present invention is not limited to the embodiments described herein. The present invention can be implemented in modified and altered forms without departing from the spirit and scope of the present invention as defined by the claims. Therefore, the description in this specification is intended to be illustrative and does not have any limiting meaning on the present invention.

[0065] The entire contents of Japanese Patent Application No. 2023-159444, filed on September 25, 2023, are incorporated herein by reference.

[0066] 2: Sheet packaging body 4: Assembly 41: Sheet 5: Dispensing opening 20: Bag body 22: Bag opening 26: Cutting portion 100: Label (label for packaging body) 101: Outer layer 102: Outer adhesive layer 103: Printed layer 104: First resin layer 105: First silicone layer 106: First adhesive layer 107: Second resin layer 108: Second adhesive layer 109: Second silicone layer 110: Cutting portion 125: Label opening P: Opening direction P1: Upstream side P2: Downstream side R1: First region R2: Second region R3: Third region R4: Fourth region R5: Fifth region T101: Inner side (bag body side) T102: Outer side

Claims

1. A sheet packaging body comprising: an assembly of a plurality of sheets; a bag body for packaging the assembly and having a bag opening forming an opening for dispensing the sheets; and a label covering the bag opening and removably attached to the surface of the bag body, wherein the label comprises: a first resin layer; a silicone layer abutting the bag body side surface of the first resin layer and having silicone; a first adhesive layer abutting the bag body side surface of the silicone layer and having a first adhesive; a second resin layer abutting the bag body side surface of the first adhesive layer; and a cut portion forming a label opening forming the opening for dispensing the sheets, wherein the cut portion is not formed in the first resin layer but is formed in the second resin layer, and wherein the first resin layer is pulled from the upstream side to the downstream side in the opening direction, so that a part of the second resin layer separates via the cut portion, and the separated part of the second resin layer is peeled off together with the first resin layer to form the label opening, A sheet packaging body, wherein the label has a first region extending downstream from the upstream edge of the cut portion in the opening direction and a second region extending downstream from the downstream edge of the cut portion in the opening direction, the silicone layer and the first adhesive layer are provided in the first region and the second region, and the basis weight of the silicone in the first region is lower than the basis weight of the silicone in the second region.

2. The sheet packaging body according to claim 1, wherein the label has a third region extending downstream from the upstream edge of the label in the opening direction, the third region is provided with the silicone layer instead of the first adhesive layer, and the second resin layer and the silicone layer are peelably overlapped in the third region.

3. The sheet packaging body described in claim 2, wherein the label has a fourth region extending upstream from the upstream edge of the cut portion in the opening direction to the third region, the silicone layer is provided in the fourth region, and the basis weight of the silicone in the fourth region is higher than the basis weight of the silicone in the first region.

4. The sheet packaging body according to claim 3, wherein the first adhesive layer is provided in the fourth region.

5. A sheet packaging body according to any one of claims 1 to 4, wherein the silicone layer is arranged in a plurality of rectangular regions in a plan view in the first region.

6. A sheet packaging body as described in any one of claims 1 to 4, wherein the area ratio of silicon of the silicon layer in the first region is 40% or less, and the area ratio of silicon of the silicon layer in the second region is 50% or more.

7. A sheet packaging body as described in any one of claims 1 to 4, wherein the label has a fifth region arranged around the cut portion downstream of the first region in the opening direction and upstream of the second region in the opening direction, the silicone layer is provided in the fifth region, and the basis weight of the silicone in the fifth region is higher than the basis weight of the silicone in the first region.

8. A sheet packaging body as described in any one of claims 1 to 4, wherein the label has a second adhesive layer abutting the surface of the second resin layer facing the bag body and having a second adhesive, and a second silicone layer abutting the surface of the second adhesive layer facing the bag body and having silicone, the label has a third region extending downstream from the upstream edge of the label in the opening direction, the second adhesive layer is provided across the first region and the third region, and the second silicone layer is not provided in the third region but is provided in the first region.

9. A sheet packaging body as described in any one of claims 1 to 4, wherein the label abuts the bag body side surface of the second resin layer and has a second adhesive layer having a second adhesive, and the adhesive strength of the first adhesive is higher than the adhesive strength of the second adhesive.

10. A label for packaging that is peelably attached to the surface of a bag that packages an assembly of multiple sheets and covers an opening of the bag in an openable and closable manner, the label having: a first resin layer; a silicone layer that abuts the surface of the first resin layer facing the bag and has silicone; a first adhesive layer that abuts the surface of the silicone layer facing the bag and has a first adhesive; a second resin layer that abuts the surface of the first adhesive layer facing the bag; and a cut portion that forms a label opening that constitutes an outlet for the sheets, the cut portion being not formed in the first resin layer but formed in the second resin layer; and the label opening is formed by pulling the first resin layer from the upstream side to the downstream side in the opening direction, causing a part of the second resin layer to separate via the cut portion, and the separated part of the second resin layer to peel off together with the first resin layer to form the label opening, The label has a first region extending downstream from the upstream edge of the cut portion in the opening direction, and a second region extending downstream from the downstream edge of the cut portion in the opening direction, the silicone layer and the first adhesive layer are provided in the first region and the second region, and the basis weight of the silicone in the first region is lower than the basis weight of the silicone in the second region.

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