JP2024007061A - Food packaging material and food packaging body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a food packaging material and a food packaging body that can improve food holdability when opened.

SOLUTION: A food packaging material 1 includes: an outer sheet 2 having a long shape in a first direction; and an inner sheet 3 that is overlaid on the outer sheet 2 interposing a sheet-shaped food product 4 and is composed of a first inner sheet piece 30 and a second inner sheet piece 31 having an overlapping part 32 between inner sides thereof along a second direction orthogonal to the first direction. Therein: the outer sheet 2 and the inner sheet 3 are joined to surround the sheet-shaped food product 4 by end joints and peelable side joints; and a sheet having higher rigidity than the inner sheet 3 is used for the outer sheet 2. This makes it possible to improve food holdability of the outer sheet 2 of when a package is opened.

SELECTED DRAWING: Figure 8

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to a food packaging material for packaging food and a food packaging body in which food is packaged using the food packaging material.

Described in Patent Document 1 as a food packaging material for packaging foods such as processed rice foods such as triangular rice balls that have a triangular front shape (mainly an equilateral triangle shape) and are finished in a three-dimensional shape with a predetermined thickness. There are things that have been done. This is a pair of outer sheets having a long shape in a first direction, and an overlapping part of inner parts overlapped with the outer sheet with a sheet food sandwiched therebetween, and along a second direction perpendicular to the first direction. and an inner sheet composed of inner sheet pieces, and the outer sheet and the inner sheet are joined to surround the sheet-shaped food by end joints and peelable side joints. .

The method of packaging food using food packaging materials is as follows. First, the food product is placed on the first inner sheet piece, then the food packaging material is folded in half longitudinally, and then the food product is placed on the portion of the food packaging material that covers the front of the food product. , the extra sheet pieces on either side are folded so as to overlap, and then the extra sheet pieces on the other side are folded on top of this. This completes the food package.

The method for opening the food package is as follows. First, open the folded excess sheet pieces on both sides, unfold the food packaging material, place the food on the second inner sheet piece, then peel off the first inner sheet piece from the outer sheet, Next, the food is transferred onto the sheet food, and then the second inner sheet piece is peeled off from the outer sheet. Thereby, the food and the sheet-like food can be eaten together.

Microfilm of Utility Model No. 59-147065

However, in the food packaging material described in Patent Document 1, plastic sheets are used for both the outer sheet and the inner sheet. Plastic sheets lack elasticity (low rigidity) and have low food retention properties. Therefore, during the opening of the food package, the food may fall out of the food packaging material and become inedible.

Therefore, the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a food packaging material and a food packaging body that can improve food retention during opening.

The food packaging material according to the present invention includes:
An outer sheet having a long shape in a first direction, and a first inner sheet that is overlapped with the outer sheet with the sheet food sandwiched therebetween and has an overlapping portion of inner portions along a second direction orthogonal to the first direction. A food packaging comprising an inner sheet composed of a second inner sheet piece and a second inner sheet piece, and the outer sheet and the inner sheet are joined so as to surround a sheet-shaped food product by an end joint and a peelable side joint. It is a material,
This is a food packaging material in which the outer sheet is more rigid than the inner sheet.

Here, as one aspect of the food packaging material according to the present invention,
A configuration may be adopted in which the center portion of the end portion in the first direction is an unjoined portion in which no end portion joint portion is formed.

Also, in this case,
When packaging food to form a food package, a configuration can be adopted in which an additional joint is formed to seal the unjoined part.

In addition, as another aspect of the food packaging material according to the present invention,
It is possible to adopt a configuration in which the end joints can also be peeled off.

Moreover, as another aspect of the food packaging material according to the present invention,
The sheet food has a shape in which at least one of the length in the first direction and the width in the second direction is smaller than the storage portion of the sheet food defined by the inner edges of the end joint and the side joint. ,
A regulating portion for regulating movement of the sheet food is formed in the storage portion at a location close to the outer edge of the sheet food by joining the outer sheet and the inner sheet;
It is possible to adopt a configuration in which the regulating portion is also removable.

Moreover, as yet another aspect of the food packaging material according to the present invention,
Among the overlapping parts of the inner sheets, the first inner sheet piece and the second inner sheet piece are joined along the second direction at a location inside the inner edge of the first inner sheet piece to form an overlapping part. A sealing part is formed to seal the
It is possible to adopt a configuration in which the sealing portion is also peelable.

Also, in this case,
The sealing portion may have a narrower width than the side joint portion.

Moreover, as yet another aspect of the food packaging material according to the present invention,
A configuration in which a paper sheet is used as the outer sheet can be adopted.

Moreover, the food packaging body according to the present invention includes:
Folding one of the above food packaging materials in half in the first direction with the food in between, and placing the food packaging material on both sides of the food packaging material on top of the portion of the food packaging material that covers the front of the food. By folding the extra sheet pieces, the food is wrapped in a triangular shape.
This is a food packaging body in which a label is pasted on the part of the food packaging material that covers the front of the food, spanning over the folded excess sheet pieces on both sides.

Here, as one aspect of the food package according to the present invention,
A first opening operation display section is provided on the outer surface of the label to display that the label is to be peeled off as a first opening operation that is the first operation when opening the food package,
When the food packaging is opened, it is placed on the outer surface of the part of the food packaging material that covers the front of the food, which until the first opening operation is hidden by extra sheet pieces or labels on both folded sides. It is possible to adopt a configuration in which a display section is provided after the second opening operation that displays an explanation of subsequent opening operations including the second opening operation that is the second operation.

Moreover, as another aspect of the food package according to the present invention,
At each corner of the triangle, a flattened tab is formed by overlapping extra sheets of food packaging material.
At least one of the ears may be configured to be unsealed.

According to the present invention, a sheet having higher rigidity than the inner sheet is used for the outer sheet of the food packaging material. Therefore, according to the present invention, it is possible to improve the food retention property of the outer sheet when opening the package.

FIG. 1 is an exploded perspective view of a food packaging material. FIG. 2 is an external view of the food packaging material. FIG. 3 is an inner view of the food packaging material. FIGS. 4(a) to 4(c) are explanatory diagrams of the process of packaging food using the food packaging material. FIGS. 5(a) and 5(b) are explanatory diagrams continuing from FIG. 4(c). FIG. 6(a) is a front view of a food package in which food is packaged using a food packaging material. FIG. 6(b) is a rear view of the food package. FIG. 7(a) is an explanatory diagram of the process of opening the food package. FIG. 7(b) is a plan view of the display section after the second opening operation that appears after the first opening operation. FIGS. 8(a) and 8(b) are explanatory diagrams continuing from FIG. 7(a). FIGS. 9(a) and 9(b) are explanatory diagrams continuing from FIG. 8(b).

Hereinafter, an embodiment of the present invention will be described as a food packaging material in which the food is made into a triangular rice ball, which is folded in half in the longitudinal direction while sandwiching the food, and the excess sheet pieces on both sides are folded toward the center. Hereinafter, a food packaging material used for so-called triangular packaging, in which food is packaged in a triangular shape, and a food packaging body in which food is packaged using this food packaging material will be explained.

As shown in FIGS. 1 to 3, the food packaging material 1 includes a main body 10. As shown in FIGS. In the main body 10, a pair of sheets (outer sheet 2, inner sheet 3) are stacked on top of each other with a sheet food product 4 in between, and are joined so as to surround the sheet food product 4. The pair of sheets has a shape in which one of the sheets is longer than the other in a direction perpendicular to each other. The sheet-shaped food 4 is seaweed or the like wrapped around the food. The pair of sheets are joined and sealed on all sides by end joints 11, 11 on one end 10a side and the other end 10b side, and side joint parts 12, 12 on both sides. Note that, hereinafter, one of the above (the vertical direction in FIGS. 2 and 3) will be referred to as the "longitudinal direction" or the "first direction", and the other above (the horizontal direction in FIGS. 2 and 3) will be referred to as the "width direction". Or referred to as the "second direction."

The outer sheet 2 has a rectangular shape (rectangular shape) large enough to wrap around food when folded in half in the longitudinal direction. The outer sheet 2 is or is made mainly of paper, unbleached kraft paper, Japanese paper, mixed paper, synthetic paper, glassine paper, rayon paper, paper quality or paper-like (these are collectively referred to as "paper"). It is a sheet (film) (these are collectively referred to as a "paper sheet" (film)). The paper may be paper containing bio-based polyethylene terephthalate (bio-based PET, so-called bio-PET). The outer sheet 2 has heat-weldability on at least one of the inner surface and the outer surface entirely or partially at necessary locations, as required. For example, the outer sheet 2 is a laminated sheet (film) made by laminating paper as an outer layer and a plastic sheet (film) as an inner layer. As one form of a laminated sheet (film), the outer sheet 2 is formed by laminating a base material layer, an adhesive layer, and a resin layer in order from the outer surface side. Paper is used as the base layer. As the adhesive layer, dry laminate, extrusion laminate, etc. are used. As the resin layer, resins such as polypropylene (PP) and polyethylene (PE) are used. As an example, the base layer is paper with a basis weight of 9 g/m ² or more and 21 g/m ² or less, the adhesive layer is dry laminate, and the resin layer is biaxially oriented polypropylene (OPP). Note that the term "sheet" is not defined by its thickness, but is a concept that includes a film (the same applies hereinafter).

Like the outer sheet 2, the inner sheet 3 has a rectangular shape (rectangular shape) large enough to enclose food when folded in half in the longitudinal direction. The inner sheet 3 is a heat-fusible plastic sheet (film) such as polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), or the like. As an example, the inner sheet 3 is a biaxially oriented polypropylene (OPP) sheet (film) or an unoriented polypropylene (CPP) sheet (film) that has been subjected to a matte treatment. Alternatively, the inner sheet 3 is a laminated sheet (film). As one form of a laminated sheet (film), the inner sheet 3 is formed by laminating a base material layer, an adhesive layer, and a resin layer in order from the outer surface side. As the base material layer, resin such as polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), etc. is used. Dry laminate, extrusion laminate, etc. are used as the adhesive layer. As the resin layer, resins such as polypropylene (PP) and polyethylene (PE) are used. Note that polypropylene sheets (films) include not only 100% pure polypropylene sheets (films), but also sheets (films) containing polypropylene as the main component and other components (for example, other resin components such as polyethylene). It is a concept that includes

The inner sheet 3 includes a pair of inner sheet pieces (a first inner sheet piece 30 and a second inner sheet piece 31). The first inner sheet piece 30 has a rectangular shape (rectangular shape) long in the width direction. The first inner sheet piece 30 is attached to one side of the outer sheet 2 in the longitudinal direction (in this embodiment, the food packaging material 1 is placed in front (with one end 10a of the food packaging material 1 up and the other end 10b down). It is placed on the upper side when viewed from the outside). The second inner sheet piece 31 has a rectangular shape (rectangular shape) long in the width direction. The second inner sheet piece 31 is arranged on the other side in the longitudinal direction of the outer sheet 2 (in the present embodiment, on the lower side when the food packaging material 1 is viewed from the front (outer surface)).

An overlapped portion 32 is formed by overlapping the inner side of the first inner sheet piece 30 and the inner side of the second inner sheet piece 31. The overlapping portion 32 is formed over the entire area between both side edges of the inner sheet 3. In this embodiment, the inner side of the first inner sheet piece 30 is superimposed on the inner side (outer surface) of the second inner sheet piece 31 . Therefore, the inner side of the second inner sheet piece 31 is in contact with the sheet-like food 4, whereas the inner side of the first inner sheet piece 30 is between the second inner sheet piece 31 and the sheet-like food 4. The inner part is interposed and does not come into contact with the sheet-like food 4. In this embodiment, the overlapping portion 32 is arranged at the center of the inner sheet 3 in the longitudinal direction.

A sealing portion 33 is formed in the overlapping portion 32 along the width direction of the inner sheet 3. The sealing part 33 seals the overlapping part 32 and blocks communication between the inside and outside of the food packaging material 1 via the overlapping part 32. The sealing portion 33 is a joint formed by welding the first inner sheet piece 30 and the second inner sheet piece 31. In this embodiment, the sealing part 33 is a band-shaped seal having a width narrower than the end joint part 11 and the side joint part 12.

The sealing portion 33 is a weak bond that will not peel off with a small force, but can be peeled off if a person applies a certain amount of force. In this embodiment, a coating agent (part coating agent) such as a heat-sensitive adhesive is applied to at least one of the outer surface of the inner side of the second inner sheet piece 31 or the inner surface of the inner side of the first inner sheet piece 30. Since the bonding strength (heat sealing strength) of the agent is not strong, the sealing portion 33 becomes a weak bond (weak seal).

The sealing portion 33 is formed along the inner edge of the first inner sheet piece 30. However, the sealing portion 33 is formed at a location inside the inner edge of the first inner sheet piece 30. As a result, the portion from the inner edge of the first inner sheet piece 30 to the sealing portion 33 becomes a free piece 30a that is a non-bonded portion. The release piece 30a serves as a grip piece for peeling off the first inner sheet piece 30 from the outer sheet 2 when opening the package.

The end joint portion 11 is formed by welding the outer sheet 2 and the inner sheet 3 along one end 10a and the other end 10b of the outer sheet 2 and the inner sheet 3. However, the center portions of one end 10a and the other end 10b of the outer sheet 2 and the inner sheet 3 (areas that will become the lug pieces 10d described later) are unwelded portions 11a that are not welded. The side joint portion 12 is formed by welding the outer sheet 2 and the inner sheet 3 along the side edges of the outer sheet 2 and the inner sheet 3. The interior of the main body 10 configured in this manner serves as a housing section for the sheet-shaped food product 4. In this embodiment, the end joint portion 11 and the side joint portion 12 are band-shaped seals having a predetermined width.

The end joints 11 and the side joints 12 are weak joints that will not peel off with a small force, but can be peeled off if a person applies a certain amount of force. In this embodiment, a coating agent (part coating agent) such as a heat-sensitive adhesive is applied to at least one of the inner surface of at least the outer peripheral portion of the inner sheet 3 or the inner surface of at least the outer peripheral portion of the outer sheet 2, and the bonding strength of the coating agent is (Heat seal strength) is not strong, so the end joints 11 and the side joints 12 are weak joints (weak seals).

A regulating portion 13 is formed inside the end joint portion 11 and the side joint portion 12 and close to the outer edges of one end edge, the other end edge, and both side edges of the sheet-like food product 4 . Since both the length and width of the sheet-like food product 4 are smaller than the storage area for the sheet-like food product 4 inside the main body 10, there is a possibility that the sheet-like food product 4 will move inside if left as is. The regulating portion 13 regulates the movement of the sheet-shaped food product 4 in the longitudinal direction and the width direction. Thereby, the sheet-shaped food product 4 is positioned at an appropriate position on the main body 10. The regulating portion 13 is a joint formed by welding the outer sheet 2 and the inner sheet 3 together. In this embodiment, the regulating portion 13 is a narrow band-shaped seal. Alternatively, the restriction portion 13 may be a point sticker. Alternatively, the regulating portion 13 may be a seal protruding from the inner edge of the end joint portion 11 or the side joint portion 12.

The regulating portion 13 is a weak bond that will not peel off with a small force, but can be peeled off if a person applies a certain amount of force. In this embodiment, a coating agent (part coating agent) such as a heat-sensitive adhesive is applied to at least one of the inner surface of the inner sheet 3 at least at a corresponding location or the inner surface at least at a corresponding location of the outer sheet 2, and the bonding strength of the coating agent is (Heat seal strength) is not strong, so the regulating portion 13 becomes a weak bond (weak seal).

The method for packaging food using food packaging material 1 is as follows. First, as shown in FIG. 4(a), the food 5 is placed on the inner sheet 3 of the food packaging material 1. At this time, the food 5 is placed on one of the first inner sheet piece 30 or the second inner sheet piece 31, and one corner (apex corner) of the food 5 is at one end 10a of the food packaging material 1. It is arranged so as to face the side or the other end 10b side. Note that the width of the food product 5 is approximately the same as the width of the sheet-like food product 4.

Next, as shown in FIG. 4(b), the food packaging material 1 is folded in half in the longitudinal direction so that the one end 10a side and the opposite end 10b side are aligned, and the folded side is , it is also folded along the side surface (triangular slope) of the food product 5. As a result, one half of the food packaging material 1 in the longitudinal direction on the one end 10a side covers the back surface of the food product 5, and the other end 10b side half covers the front surface of the food product 5, and the sheets on both sides (left and right) of the food packaging material 1 The pieces 10c, 10c remain in a state where one end 10a and the other end 10b of the food packaging material 1 are misaligned. Note that even if air is trapped inside the housing section of the sheet food 4, the air is pushed out when the food packaging material 1 is folded and escapes to the outside from the unjoined portion 11a. ing.

Therefore, as shown in FIG. 4(c), an extra sheet piece 10c on either side is folded over the portion of the food packaging material 1 that covers the front of the food 5, and Next, as shown in FIG. 5(a), the other extra sheet piece 10c is folded so as to be overlapped thereon.

Then, as shown in FIG. 5(b), a label 7 is pasted thereon so as to span the folded excess sheet pieces 10c, 10c on both sides. The label 7 is printed on the outer surface of the label base material to display the product name, contents (ingredients) of the rice ball, price, image of the product, etc., and is pasted on the front side when displayed in a store. This is a product display label that is worn on the body.

Here, as shown in FIG. 6, a tab 10d is formed at each corner of the triangle. The lug piece 10d is a portion where an extra sheet piece is folded around the axis in the protruding direction. Since it is folded, there is basically no opening. However, a sealing portion 14 is formed at least on the ear piece 10d at the top corner. The sealing portion 14 is formed by welding the lug 10d along the width direction that intersects with the protruding direction of the lug 10d. In this embodiment, the sealing portion 14 is a band-shaped seal having a predetermined width. By forming the sealing part 14, an additional joint part 11b is formed in the unjoined part 11a of the end joint part 11 to seal the unjoined part 11a (see FIG. 8(a)). The container for food 4 is completely sealed.

The sealing portion 14 and the additional bonding portion 11b are weak bonds that will not peel off with a small force, but can be peeled off if a person applies a certain amount of force. In this embodiment, a coating agent (part coating agent) such as a heat-sensitive adhesive is applied to the corresponding location, and the bonding strength (heat sealing strength) of the coating agent is not strong, so the sealing portion 14 and the additional bonding portion 11b are , resulting in a weak bond (weak seal).

However, at least one lug 10d (at least one of the left and right lug pieces 10d, 10d located at the bottom) is not sealed, and the inside of this lug 10d is communicated inside and outside the food package 6. ing. Therefore, when the food 5 inside is heated using a microwave oven before opening the food package 6, the generated steam is discharged to the outside through the tab 10d. Note that "not sealed" means that the ear piece 10d has a sealed part, but a part of the sealed part is a communicating part that is not joined, and is not completely sealed. The purpose is to include such forms as well.

Through the above steps, the food package 6 is completed. As shown in FIG. 6(a), the label 7 includes a label body 7a and a knob 7b. The label body 7a is a portion having an adhesive layer or adhesive layer on the inner surface of the label base material. Thereby, the label 7 is removably attached to the portion of the food packaging material 1 that covers the front surface of the food 5 by adhesive or adhesion. The knob portion 7b is a portion that does not have an adhesive layer or adhesive layer on the inner surface of the label base material. The label 7 can be peeled off by picking the knob 7b and pulling the knob 7b. In this embodiment, the label 7 has a trapezoidal shape that is sized to fit within the triangular shape in front of the food package 6.

A first opening operation display section 8a is provided on the outer surface of the knob section 7b. The first opening operation display section 8a displays the contents of the first operation (first opening operation) when opening the food package 6, and can take various forms such as printing, labeling, etc. In this embodiment, the first opening operation display section 8a is formed by printing on the outer surface of the label base material.

As shown in FIG. 6(b), a label 9 is attached to the back surface of the food package 6. The label 9 is a quality display label in which product information such as a product name, raw material name, expiration date, and manufacturer are printed on the outer surface of a label base material.

The method for opening the food package 6 is as follows. First, in accordance with the display on the first opening operation display section 8a, the user picks the tab 7b of the label 7, pulls the tab 7b, and peels the label 7 from the food package 6. Then, the folded extra sheet pieces 10c, 10c on both sides are not fixed to the part of the food packaging material 1 that covers the front of the food 5, so as shown in FIG. 7(a). , it becomes open to some extent due to the reaction force. At this time, a display part 8b is provided on the outer surface of the portion of the food packaging material 1 that covers the front of the food 5 after the second opening operation (see also FIG. 2), and by peeling off the label 7, , to be exposed. As shown in FIG. 7(b), after the second opening operation, the display section 8b displays an explanation of the subsequent opening operations including the second operation (second opening operation) when opening the food package 6. It can take various forms such as printing and labeling. In this embodiment, after the second unsealing operation, the display section 8b is formed by printing on the outer surface of the outer sheet 2.

After the second opening operation, it is possible to easily understand the contents displayed on the display section 8b after the second opening operation. As a second opening operation, as shown in FIG. 8(a), the food packaging material 1 is unfolded and the food 5 is placed on the second inner sheet piece 31. Next, as a third unsealing operation, the first inner sheet piece 30 is removed from the outer sheet 2 by pinching the free piece 30a of the first inner sheet piece 30 and pulling the free piece 30a. Peel off. This exposes half of the sheet food 4.

Next, as a fourth unsealing operation, the food 5 is transferred onto the exposed sheet food 4, as shown in FIG. 9(a). Next, as a fifth unsealing operation, the second inner sheet piece 31 is peeled off from the outer sheet 2 by pinching the inner side of the second inner sheet piece 31 and pulling the inner side. Thereby, as shown in FIG. 9(b), the outer sheet 2 from which the inner sheet 3 has been removed can be used as a hand stain prevention sheet, and the food 5 integrated with the sheet-shaped food 4 can be eaten.

As described above, according to the present embodiment, a sheet having higher rigidity than the inner sheet 3 is used as the outer sheet 2. Specifically, the outer sheet 2 is made of a different material that is harder than the inner sheet 3, or is made of a different material or the same material that is thicker than the inner sheet 3, so that it has higher rigidity than the inner sheet 3. A sheet is used. Therefore, according to the present embodiment, it is possible to improve the food retention property of the outer sheet 2 when opening the package.

Further, according to the present embodiment, the end joints 11 are not formed in the central portions of the longitudinal ends of the food packaging material 1, and the unjoined portions communicate between the inside and outside of the food packaging material 1. 11a. As a result, even if there is air in the housing portion of the sheet food 4, the air is pushed out when the food packaging material 1 is folded and escapes to the outside from the unjoined portion 11a. It has become. Therefore, according to the present embodiment, it is possible to prevent the problem that it becomes difficult to package the food product 5 due to the bulge caused by the air inside the container.

Further, according to the present embodiment, not only the side joint portion 12 but also the end joint portion 11 (including the additional joint portion 11b formed to seal the unjoined portion 11a) can be peeled off. Therefore, according to this embodiment, when the outer sheet 2 is used as a hand stain prevention sheet after opening, it is possible to prevent the inner sheet 3 from hanging down from the end of the outer sheet 2 and becoming a hindrance. Moreover, when discarding, it becomes easy to separate and dispose of the outer sheet 2 and the inner sheet 3, which are made of different materials.

Further, according to the present embodiment, the regulating section 13 is provided. Therefore, according to the present embodiment, it is possible to prevent the sheet-like food 4 from moving within the storage section and shifting the positional relationship between the food 5 and the sheet-like food 4. Moreover, according to the present embodiment, the regulating portion 13 is removable. Therefore, according to the present embodiment, the inner sheet pieces 30 and 31 can be easily peeled off and removed without the restriction portion 13 acting as resistance.

Further, according to the present embodiment, in addition to the end joint portion 11 and the side joint portion 12, a sealing portion 33 is provided. Then, a sealing portion 14 is later formed on the unjoined portion 11a of the end portion joining portion 11, and an additional joining portion 11b is formed. Therefore, according to the present embodiment, the inside of the housing section for the sheet-shaped food product 4 can be made highly airtight, and the sheet-like food product 4 can be suitably prevented from becoming damp.

Moreover, according to the present embodiment, the sealing portion 33 is a band-shaped joint portion whose width is narrower than that of the side joint portion 12 . When peeling off the first inner sheet piece 30, a force is applied to the sealing part 33 in a direction perpendicular to the sealing part 33, but if the width of the sealing part 33 is thick, a large force will be required, and the sealing After the portion 33 is peeled off, the load suddenly decreases. If this happens, it is assumed that the food 5 will fall from the food packaging material 1 with this force and become inedible. However, according to this embodiment, such an unexpected situation can be prevented.

Further, according to the present embodiment, the outer sheet 2 is a paper sheet. Therefore, according to this embodiment, the amount of plastic used can be reduced. In recent years, waste plastics have become a worldwide environmental problem, and this embodiment provides an effective measure against this environmental problem.

Further, according to the present embodiment, a first opening operation display section 8a and a second and subsequent opening operation display section 8b are provided to assist the opening operation. Therefore, according to the present embodiment, it is possible to appropriately understand the opening operation and perform the appropriate opening operation. Moreover, according to this embodiment, in the state of the food package, the display section 8b is hidden after the second opening operation and cannot be seen from the outside. Therefore, according to this embodiment, the aesthetic appearance of the product can be improved.

Furthermore, according to this embodiment, at least one lug 10d of the food package 6 is not sealed, and the inside and outside of the lug 10d communicate with each other inside and outside the food package 6. Therefore, according to this embodiment, when heating the food 5 inside using a microwave oven, the generated steam can be suitably discharged to the outside and released.

Note that the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention.

In the above embodiment, a paper sheet is used as the outer sheet 2, which has higher rigidity than the inner sheet 3. However, the present invention is not limited thereto. The key is to use a sheet of a different material that is harder than the inner sheet, a sheet of a different material that is thicker than the inner sheet, or a sheet of the same material.As long as the sheet has high rigidity, various materials can be used. can do.

Moreover, in the embodiment described above, both the end joint portion 11 and the side joint portion 12 can be peeled off. However, the present invention is not limited thereto. While it is essential that the side joints be peelable, it is not essential that the end joints (and additional joints) be peelable.

Further, in the embodiment described above, the regulating portion 13 is provided to regulate the movement of the sheet-shaped food product 4 in both the longitudinal direction and the width direction. However, the present invention is not limited thereto. For example, if the end or side joints are located near the outer edge of the sheet food product, no restriction in that direction is required.

Further, in the embodiment described above, the sealing portion 33 is provided at the overlapping portion 32 of the inner sheet 3. However, the present invention is not limited thereto. As long as there is no problem with the airtightness of the housing portion of the sheet food 4, the sealing portion of the overlapping portion is not essential.

Further, in the embodiment described above, the unjoined part 11a is provided in the end portion 11, and the sealing part 14 is later formed on the unjoined part 11a, and the additional joined part 11b is formed. However, the present invention is not limited thereto. If there is no problem with the bendability of the food packaging material 1 during packaging, the unjoined portion is not essential. Even if an unjoined part is provided, it may be only at one end, rather than at both ends in the longitudinal direction of the food packaging material. Furthermore, if there is no problem with the airtightness of the housing section for the sheet-shaped food product 4, the additional joint section is not essential.

Furthermore, in the above embodiment, the food packaging material 1 is used for triangular packaging. However, the present invention is not limited thereto. For example, it can be used for square packaging for food by sandwiching the food and folding it in half lengthwise, overlapping excess sheet pieces on both sides to form a bag, and sealing the opening. good.

Further, in the above embodiment, the food is a triangular rice ball (processed cooked rice food), and the sheet-like food is seaweed. However, the food to be packaged can be processed rice foods other than rice balls (for example, pilaf, fried rice, sushi, etc.) and foods other than processed rice foods (for example, steamed buns), as long as they can be wrapped in food packaging materials. The type of food is not particularly limited, and may be Japanese sweets such as Japanese sweets, Western sweets such as cakes, bread, sandwiches, hamburgers, etc.). The sheet-shaped food may also be a sheet-shaped kelp, tatami sardine, etc., as long as it can be accommodated in the flat storage part of the food packaging material, and the type of the sheet-shaped food is not particularly limited. .

Furthermore, the shape of the food to be packaged is not particularly limited. For example, instead of having a triangular front face, the front face may be a flat columnar shape having a circular or square shape. Moreover, it may be block-shaped. Alternatively, the entire surface may be a continuous curved surface, such as a spherical shape. These are just examples, and in short, any shape may be used as long as it can be wrapped in a food packaging material.

Also, "triangular", "rectangular", "rectangular", "trapezoidal", "center", "center", "end", "side", "same", "orthogonal", "top and bottom" In the present invention, terms such as "", "left and right", which specify a shape, region, state, or direction, include not only the actual shape but also the concept of "approximately" meaning close to or similar to the shape, region, state, or direction.

DESCRIPTION OF SYMBOLS 1... Food packaging material, 10... Main body, 10a... One end, 10b... Other end, 10c... Extra sheet piece, 10d... Ledge piece, 11... End joint part, 11a... Unjoined part, 11b... Additional joint part , 12... Side joint part, 13... Regulating part, 14... Sealing part, 2... Outer sheet, 3... Inner sheet, 30... First inner sheet piece, 30a... Free piece, 31... Second inner sheet piece, 32...overlapping part, 33...sealing part, 4...sheet-shaped food, 5...food (triangular rice ball), 6...food package, 7...label, 7a...label main body, 7b...picking part, 8a...first Opening operation display section, 8b... Display section after second opening operation, 9... Label

Claims (11)

An outer sheet having a long shape in a first direction, and a first inner sheet that is overlapped with the outer sheet with the sheet food sandwiched therebetween and has an overlapping portion of inner portions along a second direction orthogonal to the first direction. A food packaging comprising an inner sheet composed of a second inner sheet piece and a second inner sheet piece, and the outer sheet and the inner sheet are joined so as to surround a sheet-shaped food product by an end joint and a peelable side joint. It is a material,
A food packaging material in which the outer sheet is more rigid than the inner sheet. The food packaging material according to claim 1, wherein the central part of the end in the first direction is an unjoined part in which no end joint is formed. The food packaging material according to claim 2, wherein an additional bonded portion is formed to seal the unbonded portion when the food is packaged to form a food package. The food packaging material according to claim 1, wherein the end joints are also peelable. The sheet food has a shape in which at least one of the length in the first direction and the width in the second direction is smaller than the storage portion of the sheet food defined by the inner edges of the end joint and the side joint. ,
A regulating portion for regulating movement of the sheet food is formed in the storage portion at a location close to the outer edge of the sheet food by joining the outer sheet and the inner sheet;
The food packaging material according to claim 1, wherein the regulating portion is also peelable. Among the overlapping parts of the inner sheets, the first inner sheet piece and the second inner sheet piece are joined along the second direction at a location inside the inner edge of the first inner sheet piece to form an overlapping part. A sealing part is formed to seal the
The food packaging material according to claim 1, wherein the sealing portion is also peelable. The food packaging material according to claim 6, wherein the sealing portion is narrower than the side joint portion. The food packaging material according to claim 1, wherein the outer sheet is a paper sheet. The food packaging material according to any one of claims 1 to 8 is folded in two in a first direction with the food sandwiched therebetween, and a portion of the food packaging material that covers the front side of the food. By folding the extra sheet pieces on both sides of the food packaging material overlappingly, the food is wrapped in a triangular shape.
A food packaging body in which a label is affixed over the portion of the food packaging material that covers the front of the food, spanning over the folded excess sheet pieces on both sides. A first opening operation display section is provided on the outer surface of the label to display that the label is to be peeled off as a first opening operation that is the first operation when opening the food package,
When the food packaging is opened, it is placed on the outer surface of the part of the food packaging material that covers the front of the food, which until the first opening operation is hidden by extra sheet pieces or labels on both folded sides. 10. The food package according to claim 9, further comprising a display section for displaying subsequent opening operations including the second opening operation, which is the second operation. At each corner of the triangle, a flattened tab is formed by overlapping extra sheets of food packaging material.
The food package according to claim 9, wherein at least one ear piece is not sealed.

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