Food packaging

Abstract

To provide a food packaging bag and a food package that can be opened appropriately and reliably.SOLUTION: A food packaging bag is formed of a pair of sheets 2,3. One sheet 3 of the sheets in the pair comprises: a cut line 32 formed extending from a header portion 15 to an area of a bag body 10 beyond a top joint 11; an opening strip 34 bonded onto an inner surface of the one sheet 3; and a sheet piece 5 peelably bonded onto an outer surface of the one sheet 3. Therein, the sheet strip 5 is bonded onto the outer surface of the one sheet 3 so as to cover at least a portion of the cut line 32 located in the area of the bag body 10, and so that at least the other end of the sheet strip 5 enters an area bonded with a product information display label 8 in the one sheet 3.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention , food The present invention relates to a food package in which food is packaged in a food packaging bag. [Background technology]

[0002] There are foods such as sandwiches that have triangular (usually right-angled) sides and a three-dimensional shape (a triangular prism laid on its side) with a certain width. A typical food packaging bag for packaging such foods is shown in Fig. 12, and one such bag is well known, for example, as described in Patent Document 1.

[0003] The food packaging bag 1' comprises a bag body 10' and a header portion 15'. The bag body 10' is formed by overlapping a pair of sheets 2', 3', each having a shape in which one end in a first direction is wider than the other end, and is sealed on three sides by a top joint portion 11' at one end and side joint portions 12', 12' on both side edges, with the other end forming an opening 13'. The header portion 15' is formed by joining the protruding pieces of the sheets 2', 3' protruding from the top joint portion 11' to each other at appropriate locations and integrating them.

[0004] In the second sheet 3' in the header portion 15', for example, an inverted U-shaped cut line 32' is formed, and a free piece 33' is formed with the cut line 32' as its outline. On the inner surface of the second sheet 3', an opening strip 34' such as cutting tape is joined from the free piece 33' along the first direction toward the other end of the second sheet 3'.

[0005] To package food, first, opening 13' is opened, and the food is placed into bag body 10' from the apex side. After that, the excess sheet piece on the opening 13' side, which extends from the outer edge of the bottom of the food into a rectangular cylindrical shape, is folded appropriately to close and seal opening 13'. This completes food package 7' as shown in Figure 13(a).

[0006] The food package 7' is a product sold at a store such as a convenience store, etc. For this reason, as described in Patent Document 1, for example, a label 8' is attached to the back of the food package 7' on which product information such as the product name, ingredient names, expiration date or best-before date, manufacturer, price, and barcode are printed. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Publication No. 2017-171326 Summary of the Invention [Problem to be solved by the invention]

[0008] When a purchaser of the product wants to eat the food, he or she picks up the free piece 33' and pulls it down. This pulls the tear strip 34', causing the second sheet 3' and label 8' to tear along the first direction by a predetermined width, forming a tearable portion in the second sheet 3'. The food can be removed from this tearable portion.

[0009] However, due to manufacturing reasons, the second sheet 3' is cut from a long sheet roll in the second direction perpendicular to the first direction. Therefore, the tearing direction of the second sheet 3' is primarily the second direction, i.e., the width direction of the second sheet 3'. This means that the tearing of the second sheet 3' by the tear strip 34' occurs against the tearing direction of the second sheet 3'. Furthermore, in recent years, food packaging bags using paper sheets have begun to be proposed from an environmental perspective. Paper sheets have a stronger tearing direction in the second direction than plastic sheets, so the resistance is greater. Furthermore, the addition of the label 8' further increases the resistance. For this reason, as shown in FIG. 13(b), when opening the bag, the tearing of the second sheet 3' or label 8' may deviate from the tear strip 34' and proceed in an unexpected direction. If the degree of deviation is large, opening may be difficult.

[0010] Therefore, the present invention has been made in consideration of such circumstances, and provides a method for opening a package properly and reliably. Food The object is to provide a product package. [Means for solving the problem]

[0011] The present invention food packaging teeth, A food packaging bag comprising a pair of overlapping sheets each having a shape in which one end is wider than the other end in a first direction, the bag body being sealed on three sides by a top joint at one end and side joints at both sides, with the other end being an opening, and a header portion being formed by protruding pieces of each sheet protruding from the top joint. Food packaging in which food is packaged And, One seat is a cut line having a shape that forms a free piece on the inside, and both ends of the cut line are formed from the header portion to the area of ​​the bag body beyond the top joint portion; a tearing strip joined to the inner surface of one of the sheets from the free piece toward the other end of the one of the sheets; a sheet piece that is releasably bonded to the outer surface of one of the sheets so as to cover at least the portion of the cut line that is located in the area of ​​the bag body, and so that at least the other end of the sheet piece enters the product information display label bonding area of ​​the one of the sheets; 、 a product information label joined to a product information label joining area on the outer surface of one of the joined sheets; Equipped with food packaging is.

[0012] Here, the present invention food packaging As one aspect of the The sheet piece is joined to the outer surface of one of the sheets so as to cover at least the portion of the cut line located in the area of ​​the bag body, so that at least the tip of the free piece projects from one edge of the sheet piece, and so that at least the other end of the sheet piece enters the joining area of ​​the product information display label on the one of the sheets. The above configuration can be adopted.

[0013] Furthermore, the present invention food packaging As another aspect of the above, The score line is formed in the header portion and is configured with a tip portion having both end points approaching the top joint portion, and an extension portion having a shape extending from each end point of the tip portion beyond the top joint portion to the region of the bag body. The above configuration can be adopted.

[0014] Furthermore, the present invention food packaging In another aspect of the The food product has a three-dimensional shape with triangular sides and a predetermined width, Both ends of the cut line are located in a region of one sheet corresponding to the back or front of the food, closer to the top joint than the center in the first direction. The above configuration can be adopted.

[0016] Also The food packaging body according to the present invention Yet another As an aspect, The bonding strength of the sheet piece is set to be smaller than the bonding strength of the product information display label. The above configuration can be adopted. [Effects of the Invention]

[0017] According to the present invention, both ends of the slit line are formed so as to extend from the header portion, past the top joint portion, to the bag body area. Furthermore, a sheet piece is disposed on the inner surface of the product information display label. This allows one sheet and the product information display label to be torn cleanly along the first direction. Therefore, according to the present invention, the bag can be opened properly and reliably. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is an exploded perspective view of a food packaging bag according to this embodiment. [Figure 2] FIG. 2 is a front view of the food packaging bag according to this embodiment. [Figure 3] FIG. 3 is a rear view of the food packaging bag according to this embodiment. [Figure 4] Fig. 4(a) is a front view of the first sheet of the food packaging bag according to this embodiment, and Fig. 4(b) is a cross-sectional view taken along line AA in Fig. 4(a). [Figure 5] Fig. 5(a) is a front view of the second sheet of the food packaging bag according to this embodiment, and Fig. 5(b) is a cross-sectional view taken along line BB in Fig. 5(a). [Figure 6] FIG. 6 is a perspective view, seen from the front side, of a food package according to this embodiment in which food is packaged in a food packaging bag according to this embodiment. [Figure 7] FIG. 7 is a perspective view of the food packaging body according to this embodiment as viewed from the rear side. [Figure 8] 8(a) and (b) are perspective views showing how the food package according to this embodiment is opened. [Figure 9] FIG. 9 is a rear view of the packaging bag for food according to the first alternative embodiment. [Figure 10] Fig. 10(a) is a perspective view seen from the back side of a food package according to another embodiment 1 in which food is packaged in the food packaging bag according to another embodiment 1. Fig. 10(b) is a perspective view showing the state in which the food package according to another embodiment 1 is being opened, which is a continuation of Fig. 8(b). [Figure 11] FIG. 11 is a rear view of the packaging bag for food according to the second alternative embodiment. [Figure 12] FIG. 12 is a rear view of a conventional food packaging bag. [Figure 13] Fig. 13(a) is a perspective view of a conventional food package in which food is packaged in a conventional food packaging bag, as seen from the rear side, and Fig. 13(b) is a perspective view of the conventional food package being opened. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, as one embodiment of the food packaging bag and food package according to the present invention, a food packaging bag and a food package for sandwiching food will be described.

[0020] As shown in Figures 1 to 3, the food packaging bag 1 comprises a bag body 10 and a header portion 15. The bag body 10 is formed by overlapping and joining a pair of sheets (a first sheet 2 and a second sheet 3). The first sheet 2 is also called the front sheet, and the second sheet 3 is also called the back sheet. The pair of sheets are shaped so that one end is longer than the other in mutually orthogonal directions, and the other end is wider than the other end. The bag body 10 is joined and sealed on three sides by a top joint portion 11 at one end and side joint portions 12, 12 on both sides, and the other end forms an opening 13. The header portion 15 is formed by joining the protruding pieces of the sheets 2, 3 protruding from the top joint portion 11 at appropriate locations to form an integrated body. In the following, the one of the directions (the up-down direction in Figures 2 and 3) will be referred to as the "longitudinal direction" or "first direction," and the other of the directions (the left-right direction in Figures 2 and 3) will be referred to as the "width direction" or "second direction."

[0021] The first sheet 2 has a body portion 20 and a tip portion 21 (the protruding piece). The body portion 20 has a shape that gradually widens from one end to the other end. The tip portion 21 has a narrow shape that extends from one end of the body portion 20.

[0022] The second sheet 3 includes a body portion 30 and a tip portion 31 (the protruding piece). The body portion 30 has a shape that gradually widens from one end to the other. The tip portion 31 has a narrow shape that extends from one end of the body portion 30.

[0023] The body portions 20, 30 are trapezoidal. Therefore, one end of the body portions 20, 30 (and the other end of the tip portions 21, 31 that coincide therewith) is linear and perpendicular to the longitudinal direction. In other words, one end of the body portions 20, 30 is linear and parallel to the width direction. Both side edges of the body portions 20, 30 and both side edges of the tip portions 21, 31 are linear and inclined with respect to the longitudinal direction. However, the other end sides of both side edges of the body portions 20, 30 are missing by the cutouts 14. As a result, the other end sides of the body portions 20, 30 are narrower by the amount of the cutouts 14.

[0024] As shown in Fig. 4, the first sheet 2 is divided into a plurality of regions in the longitudinal direction. Specifically, the first sheet 2 is divided into three regions: an upper section 22A, a middle section 22B, and a lower section 22C. The upper section 22A is divided into the upper portion and the tip section 21 of the body section 20. The lower section 22C is divided into the lower portion of the body section 20. The middle section 22B is divided between the upper section 22A and the lower section 22C, i.e., into the middle portion of the body section 20. The upper section 22A and the lower section 22C have the same height dimension.

[0025] The first sheet 2 is made into a single sheet by overlapping three sheets (a middle separate sheet 23 and upper and lower end separate sheets 23, 23) at their edges (overlapped portion 24) and joining the overlapped portion 24 along the width direction of the first sheet 2 (jointed portion 25). In this embodiment, the jointed portion 25 is a strip-shaped seal having a predetermined width, formed by welding using a heating bar or a heating roller. At the overlapped portion 24, the edge of the end separate sheet 23 is positioned on the outer surface of the edge of the middle separate sheet 23, and the edge of the middle separate sheet 23 and the edge of the end separate sheet 23 are overlapped so that the outer surface of the edge of the middle separate sheet 23 faces the inner surface of the edge of the end separate sheet 23.

[0026] The intermediate divided sheet 23 is a heat-sealable plastic sheet (film) made of polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), or the like. For example, the sheet is a biaxially oriented polypropylene (OPP) sheet (film) or a solid polypropylene (CPP) sheet (film). Alternatively, the sheet is a laminated sheet (film). As one form of laminated sheet (film), the sheet is formed by laminating, from the outer surface side, a base layer, an adhesive layer, and a resin layer. Resins such as polyethylene terephthalate (PET), polypropylene (PP), and polyethylene (PE) are used for the base layer. Dry lamination, extrusion lamination, and the like are used for the adhesive layer. Resins such as polypropylene (PP) and polyethylene (PE) are used for the resin layer. The term "polypropylene sheet (film)" not only refers to 100% pure polypropylene sheets (films), but also includes sheets (films) that contain polypropylene as the main component and other components (e.g., other resin components such as polyethylene). It should be noted that the term "sheet" is not defined by thickness, but is a concept that includes film (the same applies hereinafter).

[0027] In contrast, the upper and lower end divided sheets 23, 23 are made of paper, unbleached kraft paper, Japanese paper, mixed paper, synthetic paper, glassine paper, paper-like material (collectively referred to as "paper"), or are sheets (films) primarily made of these materials (collectively referred to as "paper sheets" (films"). The paper may be paper containing bio-based polyethylene terephthalate (bio-based PET, or so-called bio-PET). If necessary, the sheet may be heat-sealable entirely or partially on at least one of the inner and outer sides. For example, the sheet may be a laminated sheet (film) in which paper is laminated as an outer layer with a plastic sheet (film) as an inner layer. One form of laminated sheet (film) is formed by laminating, from the outer side, a base layer, an adhesive layer, and a resin layer. Paper is used as the base layer. Dry lamination, extrusion lamination, etc. are used as the adhesive layer. Resins such as polypropylene (PP) and polyethylene (PE) are used as the resin layer. As an example, the base layer has a basis weight of 12 g / m 2 About 15g / m 2 The adhesive layer is a dry laminate, and the resin layer is biaxially oriented polypropylene (OPP).

[0028] Alternatively, the upper and lower end separate sheets 23, 23 may be made of ordinary cellophane, moisture-proof cellophane, cellophane-based material, or cellophane-like material (collectively referred to as "cellophane"), or may be made primarily of these materials (films) (collectively referred to as "cellophane sheets" (films"). The sheet may be heat-sealable on at least one of the inner and outer surfaces, either entirely or partially where necessary. For example, the sheet may be a laminated sheet (film) with cellophane as the outer layer and a plastic sheet (film) as the inner layer. One form of laminated sheet (film) is formed by laminating, from the outer surface side, a base layer, an adhesive layer, and a resin layer. Cellophane is used as the base layer. Dry lamination, extrusion lamination, etc. are used as the adhesive layer. Resins such as polypropylene (PP) and polyethylene (PE) are used as the resin layer. As an example, the base layer is ordinary cellophane or moisture-proof cellophane, the adhesive layer is dry laminate, and the resin layer is biaxially oriented polypropylene (OPP).

[0029] Upper portion 22A corresponds to the upper end separate sheet 23. Middle portion 22B corresponds to the portion of intermediate separate sheet 23 excluding the upper and lower overlapping portions 24, 24. Lower portion 22C corresponds to the lower end separate sheet 23. As a result, in first sheet 2, upper portion 22A and lower portion 22C become opaque (or translucent) portions when the upper and lower end separate sheets 23, 23 are paper sheets, and become transparent portions when the upper and lower end separate sheets 23, 23 are cellophane sheets, with middle portion 22B being a transparent portion that allows the interior to be seen.

[0030] As shown in FIG. 5, the second sheet 3 is divided into multiple regions in the longitudinal direction. Specifically, the second sheet 3 is divided into three regions: an upper section 35A, a middle section 35B, and a lower section 35C. The upper section 35A is defined in the tip section 31. The lower section 35C is defined in the lower part of the body section 30. The middle section 35B is defined between the upper section 35A and the lower section 35C, i.e., the part excluding the lower part of the body section 30. The middle section 35B has a height dimension greater than the middle section 22B of the first sheet 2. The upper section 35A and the lower section 35C have the same height dimension. The upper section 35A and the lower section 35C have a height dimension smaller than the upper section 22A and the lower section 22C of the first sheet 2.

[0031] The second sheet 3 is formed by overlapping three sheets (a middle separate sheet 36 and upper and lower end separate sheets 36, 36) at their edges (overlapped portion 37) and joining the overlapped portion 37 along the width direction of the second sheet 3 (jointed portion 38) to form a single sheet. In this embodiment, the jointed portion 38 is a strip-shaped seal having a predetermined width, formed by welding using a heating bar or a heating roller. At the overlapped portion 37, the edge of the end separate sheet 36 is positioned on the inner side of the edge of the middle separate sheet 36, and the edge of the middle separate sheet 36 and the edge of the end separate sheet 36 are overlapped such that the inner surface of the edge of the middle separate sheet 36 faces the outer surface of the edge of the end separate sheet 36.

[0032] The middle divided sheet 36 is a paper sheet or a cellophane sheet, while the upper and lower divided sheets 36, 36 are plastic sheets.

[0033] Upper portion 35A corresponds to the portion of upper divided sheet 36 excluding overlapping portion 37. Middle portion 35B corresponds to the middle divided sheet 36. Lower portion 35C corresponds to the portion of lower divided sheet 36 excluding overlapping portion 37. As a result, in second sheet 3, upper portion 35A and lower portion 35C are transparent portions, and middle portion 35B is an opaque (or translucent) portion if middle divided sheet 36 is a paper sheet, and is a transparent portion if middle divided sheet 36 is a cellophane sheet.

[0034] 2 and 3, the top joint 11 is formed by welding the sheets 2 and 3 along one end of the body portions 20 and 30. In this embodiment, the top joint 11 is formed by welding using a heating bar, and is a strip-shaped seal having a predetermined width.

[0035] The side joints 12 are formed by welding the sheets 2 and 3 along the side edges (hypotenuses) of the body portions 20 and 30 and the side edges (hypotenuses) of the tip portions 21 and 31. In this embodiment, the side joints 12 are formed by welding using a heating bar and are strip-shaped seals having a predetermined width. The width of the side joints 12 is smaller than the width of the top joint 11. Specifically, the side joints 12 have a width of 2 mm or more, more preferably 3 mm or more, and 5 mm or less, more preferably 4 mm or less.

[0036] The interior of the bag body 10 constructed in this manner serves as a food storage area. An inner sheet 4 is attached to the inner surface of the first sheet 2 in the bag body 10. The other end of the inner sheet 4 is joined at two points using a point seal or the like (joint 40), and one end is a free end. This allows the inner sheet 4 to adhere to the surface of the food and follow its movement even if the food moves within the storage area. Therefore, the first sheet 2 does not get dirty and its appearance is not damaged.

[0037] As shown in FIGS. 3 and 5, a score line 32 is formed in the second sheet 3. The score line 32 is composed of a tip portion 32a and an extension portion 32b. The tip portion 32a is formed in the header portion 15 and has a shape such that both end points approach the apex joint portion 11. The tip portion 32a serves as a starting point for tearing the second sheet 3 to a predetermined width along the longitudinal direction toward the other end. In this embodiment, the tip portion 32a is formed in an inverted U shape. The extension portions 32b have a shape that extends from each end point of the tip portion 32a, past the apex joint portion 11, to the area of ​​the bag body 10. In this embodiment, the extension portions 32b are formed in straight lines parallel to each other along the longitudinal direction of the second sheet 3. In this manner, the score line 32 is formed so that both end points 32c, 32c extend from the header portion 15, past the apex joint portion 11, to the area of ​​the bag body 10. As an example, the tip portion 32a is formed by a full score line, and the extension portion 32b is formed by a full score line or perforations.

[0038] Here, the mountain fold line of the second sheet 3 that is folded by the side of the food to be packaged, more specifically, the mountain fold line of the second sheet 3 that corresponds to the intersection line between the back and side of the food to be packaged (this line coincides with a line along the longitudinal direction of the second sheet 3 that passes through the intersection of the inner edge of the top joint 11 and the inner edge of the side joint 12), is designated as L1, and the mountain fold line of the second sheet 3 that is folded by the bottom of the food to be packaged, more specifically, the mountain fold line of the second sheet 3 that corresponds to the rear edge of the bottom of the food to be packaged, is designated as L2. In this case, the positions of the endpoints 32c, 32c of the cut line 32 are set so that the distance between the inner edge of the top joint 11 (the edge of the top joint 11 that contacts the inside of the bag body 10) and the endpoints 32c, 32c of the cut line 32 is at least 5% but not more than 50%, more preferably not more than 40%, and even more preferably not more than 35% of the distance D between the inner edge of the top joint 11 and the mountain fold line L2. In this way, the cut line 32 is formed in the second sheet 3 across the area of ​​the header portion 15 and the area (upper half) corresponding to the back of the food, which is closer to the top joint portion 11 than the center of the second sheet 3 in the longitudinal direction.

[0039] A free piece 33 is formed in the second sheet 3 by forming the cut line 32. The free piece 33 has the cut line 32 as its outline, a fixed end between both end points 32c, 32c, and a free end on the side of the tip end 32a of the cut line 32. As a result, the free piece 33 becomes a long, upward-facing tongue piece.

[0040] The second sheet 3 is provided with a tear strip 34 as an opening means. The tear strip 34 is provided on the inner surface of the second sheet 3 from the tip of the free piece 33 toward the other end of the second sheet 3. The tear strip 34 is joined to the inner surface of the second sheet 3 by welding, adhesive, or the like. As an example, the tear strip 34 is joined to the inner surface of the second sheet 3 by thermal adhesion or self-adhesion after a coating agent is applied to the inner surface (the surface facing the second sheet 3). The tear strip 34 has enough strength to tear the second sheet 3. In this embodiment, the tear strip 34 is a strip-shaped cut tape having a width of 5 mm or more or 10 mm or more. The cut tape is made by cutting a thin strip of a heat-weldable plastic sheet (film) such as biaxially oriented polyester, polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), or biaxially oriented polypropylene (OPP).

[0041] The second sheet 3 includes a sheet piece 5. The sheet piece 5 is joined to the outer surface of the second sheet 3. The sheet piece 5 has a width greater than the width of the cut line 32 (the width of the extension portion 32b). In this embodiment, the sheet piece 5 has a vertically long rectangular shape. The sheet piece 5 covers at least the portion of the cut line 32 that is located in the area of ​​the bag main body 10 to prevent foreign matter and the like from entering the interior through the cut line 32, while being joined to the outer surface of the second sheet 3 so that at least the tip of the free piece 33 protrudes from one edge (upper edge) 5a of the sheet piece 5 to leave a portion for gripping the free piece 33. More preferably, the sheet piece 5 is joined to the outer surface of the second sheet 3 so as to straddle the bag main body 10 and the header portion 15 with the tip of the free piece 33 detached.

[0042] The sheet pieces 5 are obtained by cutting a heat-weldable plastic sheet (film) such as biaxially oriented polyester, polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), or biaxially oriented polypropylene (OPP) into a predetermined shape. In this embodiment, the sheet pieces 5 are polyethylene terephthalate (PET) sheets. The sheet pieces 5 are transparent due to the use of a plastic sheet. The sheet pieces 5 may also be paper sheets or cellophane sheets. Regardless of the material, the thickness of the sheet pieces 5 is set in the range of 10 μm to 60 μm inclusive in order to impart a certain degree of rigidity to the sheet pieces 5.

[0043] The sheet piece 5 has an adhesive layer or a sticking layer on the inner surface and is attached to the outer surface of the second sheet 3. Alternatively, the sheet piece 5 is coated with a coating agent (partial coating agent) such as a heat-sensitive adhesive on the entire inner surface or on a corresponding portion thereof, and then is thermally bonded or self-adhesive to the outer surface of the second sheet 3. In either case, the sheet piece 5 is bonded to the outer surface of the second sheet 3 with a bonding strength that allows it to be peeled off.

[0044] To package food, first, opening 13 is opened, and the food is placed into bag body 10 from the top corner side. After that, the excess sheet piece on the opening 13 side, which extends from the outer edge of the bottom of the food into a rectangular tubular shape, is folded appropriately to close and seal opening 13. This completes food package 7, as shown in Figures 6 and 7. Food package 7 is maintained in an airtight state by sealing top joint 11, side joints 12, 12, and opening 13. This prevents outside air from entering the inside, and the intended quality of packaged food 6 is maintained.

[0045] Food packaging 7 is a product sold at stores such as convenience stores. For this reason, label 8 is bonded to the outer surface of the back of food packaging 7. Label 8, also known as a POS label or thermal label, is a product information display label with product information such as the product name, ingredient names, expiration date or best-before date, manufacturer, price, and barcode printed on the surface of a label substrate. The label substrate is paper with an adhesive or bonding layer on the inner surface, and label 8 is attached to the outer surface of the back of food packaging 7. The bonding strength of label 8 is set to be greater than the bonding strength of sheet piece 5; in other words, the bonding strength of sheet piece 5 is set to be smaller than the bonding strength of label 8.

[0046] The label 8 is wider than the sheet piece 5. In this embodiment, the label 8 has a vertically long rectangular shape. The label 8 is joined to the outer surface of the rear surface of the food package 7 so as to cover at least the other end (lower end) of the sheet piece 5. As a result, the sheet piece 5 is positioned on the inner side of one end (upper end) of the label 8.

[0047] An easily breakable portion 80 is formed on one edge (upper edge) 8a of the label 8. The easily breakable portion 80 is formed by a plurality of cut lines extending from the one edge 8a of the label 8 along the longitudinal direction of the second sheet 3, and arranged in parallel at predetermined intervals in the width direction of the label 8.

[0048] When eating the food 6, as shown in FIG. 8(a), the tip of the detachable piece 33 is pinched and pulled down. The detachable piece 33 is integrated with one end of the opening strip 34, and the sheet piece 5 is integrated with the opening strip 34 via the second sheet 3. Therefore, when the detachable piece 33 is pinched and pulled down, the opening strip 34 and the sheet piece 5 are pulled, and the second sheet 3 is torn to a predetermined width from both end points 32c, 32c of the cut line 32 along both side edges of the opening strip 34, and the label 8 is torn to a predetermined width from the easy-to-tear portion 80 along both side edges of the sheet piece 5. As a result, an opening portion is formed on the back of the food package 7. The food 6 can be removed through this opening portion.

[0049] As described above, in this embodiment, the tear direction of the second sheet 3 (the paper sheet or cellophane sheet constituting the middle section 35B) is primarily the width direction of the second sheet 3 (the longitudinal direction of the raw sheet of the second sheet 3). Therefore, when opening the bag, the tear direction of the second sheet 3 starting from the cut line 32 does not coincide with the tear direction of the sheet being torn. However, the cut line 32 is formed so that both end points 32c, 32c extend from the header section 15, past the top joint section 11, and into the area of ​​the bag body 10. In addition, a sheet piece 5 having a certain degree of rigidity is arranged on the inner side of one end of the label 8. This allows the second sheet 3 and label 8 to be torn cleanly along the longitudinal direction, and a tear section of a uniform width is neatly formed. Therefore, this embodiment allows the bag to be opened properly and reliably.

[0050] Furthermore, according to this embodiment, the cut line 32 is formed so that both end points 32c, 32c extend from the header portion 15, past the top joint portion 11, to the area of ​​the bag body 10, and the sheet piece 5 is joined to the outer surface of the second sheet 3 so as to cover at least the portion of the cut line 32 that is located in the area of ​​the bag body 10. More preferably, the sheet piece 5 is joined to the outer surface of the second sheet 3 so as to straddle the bag body 10 and the header portion 15 with the tip of the free piece 33 detached. Therefore, according to this embodiment, it is possible to effectively prevent foreign matter and the like from entering the inside of the bag body 10 through the cut line 32, and it is also possible to effectively prevent moisture from the food 6 from migrating to the label 8 through the cut line 32 and causing bleeding or the like on the label 8.

[0051] Furthermore, according to this embodiment, the sheet piece 5 is provided so as to be releasable, but at least the other end is secured by the label 8. Therefore, this embodiment can suitably prevent the sheet piece 5 from peeling off during the distribution process of the food package 7 or in the store, resulting in a defective product.

[0052] Furthermore, according to this embodiment, paper sheets or cellophane sheets are used as part of the sheets 2 and 3. Paper sheets and cellophane sheets are more prone to creases than plastic sheets. As a result, the sheets 2 and 3 are folded sharply at each side of the food package 7, giving the food package 7 a sharp appearance. Therefore, according to this embodiment, the food package 7 has excellent appearance, stability, and self-standing ability.

[0053] Furthermore, paper sheets and cellophane sheets are more rigid (harder) than plastic sheets. This provides stiffness to sheets 2 and 3, which has the effect of improving the self-standing ability of food packaging 7. The stiffness of sheets 2 and 3 also improves the stiffness of food packaging 7. Therefore, this embodiment is highly effective in preventing food 6 from losing its shape.

[0054] Furthermore, according to this embodiment, the amount of plastic used can be reduced by using a paper sheet or cellophane sheet. In recent years, waste plastic has become a global environmental problem, and this embodiment is an effective solution to this environmental problem.

[0055] Furthermore, according to this embodiment, the upper section 22A of the first sheet 2 is defined as the upper section and header section 15 of the bag body 10, and the lower section 22C is defined as the lower section of the bag body 10. As a result, when the upper section 22A and the lower section 22C are paper sheets, in the state where the food 6 is standing upright, the upper and lower sections are hidden by the opaque upper section 22A and lower section 22C, and only the center section of the food 6 is visible through the transparent middle section 22B. In other words, only the center section of the food 6, which looks the most delicious, is visible and emphasized. Therefore, according to this embodiment, the state where the food 6 is in the state where it is in the food package 7 can arouse the consumer's desire to purchase.

[0056] Furthermore, according to this embodiment, the side joints 12 are formed in a strip shape with a predetermined width along the side edges of the bag body 10 and the header portion 15. As a result, when the food package 7 is completed, the side joints 12 are in a folded-back position as shown in Figures 6 and 7. This creates pillars on both sides of the header portion 15, causing it to stand upright. Furthermore, the header portion 15 is in a flat position extending straight from the front of the bag body 10. Therefore, according to this embodiment, the appearance of the food package 7 can be improved, and the display on the header portion 15 can be easily seen when the food package 7 is displayed in a store such as a convenience store.

[0057] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the present invention.

[0058] For example, the shape, size or length, and position of the cut line 32 in the above embodiment are merely examples. Various shapes, etc., can be adopted for the cut line 32 without departing from the spirit of the present invention. As an example, the cut line 32 shown in Figures 9 and 10(a) has a side portion 32d of a predetermined length extending from a predetermined location of the extension portion 32b (in the illustrated example, a location near the inner edge of the top joint portion 11) toward the side joint portion 12. As shown in Figure 10(b), the side portion 32d is for use in a second-stage opening operation when it is desired to open at least one of the left and right sides of the food package 7.

[0059] In the above embodiment, the sheet piece 5 is joined to the outer surface of the second sheet 3 so that at least the tip of the free piece 33 protrudes from one edge 5a of the sheet piece 5. However, the present invention is not limited to this. For example, as shown in FIG. 11 , the sheet piece 5 may be joined to the outer surface of the second sheet 3 so as to cover the entire free piece 33. In this case, the sheet piece 5 includes a main body portion 5b and a gripping portion 5c. The main body portion 5b has a shape large enough to accommodate the cut line 32 and the free piece 33, has an adhesive or bonding layer on its inner surface, and is joined to the outer surface of the second sheet 3 so as to cover the entire free piece 33. The gripping portion 5c protrudes from the main body portion 5b toward one end of the second sheet 3, does not have an adhesive or bonding layer on its inner surface, and is not joined to the second sheet 3.

[0060] When eating the food, the tab 5c of the sheet piece 5 is grasped and pulled. The main body 5b of the sheet piece 5 is joined to the tip of the free piece 33. Therefore, when the tab 5c is grasped and pulled down, the opening strip 34 and the sheet piece 5 are pulled, and the second sheet 3 is torn to a predetermined width from both end points 32c, 32c of the cut line 32 along both side edges of the opening strip 34, and the label 8 is torn to a predetermined width from the easy-to-tear portion 80 along both side edges of the sheet piece 5. As a result, an opening portion is formed on the back of the food package 7. The food 6 can be removed from this opening portion.

[0061] In the above embodiment, the cut line 32, the free piece 33, the opening strip 34, and the sheet piece 5 are provided in the center of the width of the second sheet 3. However, the present invention is not limited to this. These may be provided in positions shifted to either the left or right in the width direction.

[0062] In the above embodiment, the cut line 32 and the free piece 33 are formed in the second sheet 3, and the food package 7 is opened at the second sheet 3. However, the present invention is not limited to this. The cut line and the free piece may be formed in the first sheet, and the food package 7 may be opened at the first sheet.

[0063] In the above embodiment, each of the pair of sheets 2 and 3 is divided into a plurality of regions in the first direction, and a plastic sheet, a paper sheet, or a cellophane sheet is selectively used in each region. However, the present invention is not limited to this. For example, at least one of the pair of sheets may be a single sheet that is not divided into a plurality of regions, and a plastic sheet, a paper sheet, or a cellophane sheet may be selectively used.

[0064] In the above embodiment, a plastic sheet, a paper sheet, or a cellophane sheet is selectively used, but the present invention is not limited to this. A nonwoven fabric may also be used as the sheet.

[0065] In the above embodiment, the food is a sandwich. However, the food to be packaged may be Western confectionery such as cake, Japanese confectionery such as castella, bread, or cooked rice foods such as rice balls, as long as it can be placed in a food packaging bag. The type of food is not particularly limited. The shape of the food is also not particularly limited.

[0066] Furthermore, in the present invention, terms that specify a shape, part, state, or direction, such as "triangular," "right-angled triangular," "trapezoidal," "rectangular," "center," "straight line," "middle," "end," "side," "same," "parallel," "orthogonal," "up and down," and "left and right," include not only the term itself, but also the concept of "approximately" which means something close to or similar to it. [Explanation of symbols]

[0067] 1...food packaging bag, 10...bag body, 11...top joint, 12...side joint, 13...opening, 14...notch, 15...header, 2...first sheet, 20...body, 21...tip, 22A...upper portion, 22B...middle portion, 22C...lower portion, 23...divided sheet, 24...overlap portion, 25...joining portion, 3...second sheet, 30...body, 31...tip portion, 32...score line, 32a...tip portion, 32b...extension portion, 32c...end point, 32d...side portion, 33...free piece, 35A...upper portion, 35B...middle portion, 35C...lower portion, 36...divided sheet, 37...overlap portion, 38...joining portion, 4 ...inner sheet, 40...joint portion, 5...sheet piece, 5a...one edge (upper edge), 5b...main body portion, 5c...grip portion, 6...food (sandwich), 7...food package, 8...label, 8a...one edge (upper edge), 80...easy-to-tear portion, L1...mountain fold line of second sheet 3 corresponding to the intersection line between the back and side of the packaged food, L2...mountain fold line of second sheet 3 corresponding to the rear edge of the bottom of the packaged food, L3...valley fold line of second sheet 3 corresponding to the side edge of the bottom of the packaged food, L4...mountain fold line of second sheet 3 that is folded back, D...distance between inner edge of top joint portion 11 and mountain fold line L2

Claims

1. A food package in which food is packaged in a food packaging bag comprising: a pair of overlapping sheets each having a shape in which one end is wider than the other end in a first direction; a bag body sealed on three sides by a top joint at one end and side joints at both sides, with the other end being an opening; and a header portion formed by protruding pieces of each sheet protruding from the top joint, One seat is a cut line having a shape that forms a free piece on the inside, and both ends of the cut line are formed from the header portion to the area of ​​the bag body beyond the top joint portion; a tearing strip joined to the inner surface of one of the sheets from the free piece toward the other end of the one of the sheets; a sheet piece that is releasably bonded to the outer surface of one of the sheets so as to cover at least the portion of the cut line that is located in the area of ​​the bag body, and so that at least the other end of the sheet piece enters the product information display label bonding area on the one of the sheets; and a product information label joined to a product information label joining area on the outer surface of one of the sheets to which the sheet pieces are joined. Food packaging.

2. The sheet piece is joined to the outer surface of one of the sheets so as to cover at least the portion of the cut line located in the area of ​​the bag body, so that at least the tip of the free piece projects from one edge of the sheet piece, and so that at least the other end of the sheet piece enters the joining area of ​​the product information display label on the one of the sheets. The food package of claim 1.

3. The score line is formed in the header portion and is configured with a tip portion having both end points approaching the top joint portion, and an extension portion having a shape extending from each end point of the tip portion beyond the top joint portion to the area of ​​the bag body. The food packaging product according to claim 1 or 2.

4. The food product has a three-dimensional shape with triangular sides and a predetermined width, Both end points of the cut line are located in a region of one of the sheets that corresponds to the back or front of the food, and that is closer to the top joint portion than the center in the first direction. The food packaging body according to any one of claims 1 to 3.

5. The bonding strength of the sheet piece is set to be smaller than the bonding strength of the product information display label. The food packaging body according to any one of claims 1 to 4.

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