JP7534137B2 - Food packaging material, food packaging roll, and food packaging body - Google Patents

Description

The present invention relates to food packaging materials, food packaging material rolls, and food packages.

In recent years, food packaging materials have been required to be easy to open without touching the food directly, and to allow the food to be eaten hygienically. One such food packaging material is known to have a cutting tape that divides the food packaging material into two parts, allowing the food to be removed.

Specifically, Patent Document 1 proposes a food packaging material having an outer sheet and a hand-stain prevention sheet removably attached to the inside of the outer sheet. This type of food packaging material can be removed from the food by dividing the outer sheet in two, and the hand-stain prevention sheet is peeled off from the outer sheet when the food packaging material is removed from the food, so that the hand-stain prevention sheet is held on the food side. This allows the food to be held through the hand-stain prevention sheet, making it possible to eat the food hygienically.

JP 2014-73115 A

However, with food packaging materials like the one described above, after the outer sheet is divided into two, when removing the food packaging material from the food, force is required to peel the hand-stain prevention sheet from the outer sheet. This makes it difficult to smoothly integrate the hand-stain prevention sheet with the food.

The present invention aims to provide a food packaging material that allows the food and the hand stain prevention sheet to be smoothly integrated when removed from the food. It also aims to provide a raw material for food packaging material used in the manufacture of the food packaging material, and a food package in which food is packaged in the food packaging material.

The food packaging material according to the present invention comprises a main body sheet and at least one adhesive sheet adhered to the main body sheet, the main body sheet being divided between a first portion and a second portion of the main body sheet adjacent to each other, the adhesive sheet covering the end of the first portion of the main body sheet facing the second portion of the main body sheet and the end of the second portion of the main body sheet facing the first portion of the main body sheet, and comprising a first adhesive portion adhered to the first portion of the main body sheet and a second adhesive portion adhered to the second portion of the main body sheet, and at least one of the first adhesive portion and the second adhesive portion of the adhesive sheet is peelable from the main body sheet.

With this configuration, when food is packaged in the food packaging material, at least one of the first and second adhesive portions of the adhesive sheet is peeled off from the main sheet. This separates the first portion of the main sheet from the second portion of the main sheet. Therefore, by removing the first portion of the main sheet from the food, the second portion of the main sheet and the food can be smoothly integrated together. This allows the second portion of the main sheet to be used as a sheet to prevent hand stains when eating the food.

The main body sheet further comprises a main body sheet third portion adjacent to the main body sheet second portion, and is divided between the main body sheet second portion and the main body sheet third portion, and comprises at least two fixed sheets, the fixed sheet covering the end of the first portion of the main body sheet on the second portion side of the main body sheet and the end of the second portion of the main body sheet on the first portion side of the main body sheet as the first fixed sheet, and the fixed sheet covering the end of the second portion of the main body sheet on the third portion side of the main body sheet and the end of the third portion of the main body sheet on the second portion side of the main body sheet as the second fixed sheet, the first fixed sheet comprises a first fixed portion fixed to the first portion of the main body sheet and a second fixed portion fixed to the second portion of the main body sheet, at least one of the first fixed portion and the second fixed portion of the first fixed sheet is preferably peelable from the main body sheet, and the second fixed sheet comprises a first fixed portion fixed to the third portion of the main body sheet and a second fixed portion fixed to the second portion of the main body sheet, and at least one of the first fixed portion and the second fixed portion of the second fixed sheet is preferably peelable from the main body sheet.

With this configuration, when food is packaged in the food packaging material, at least one of the first and second adhesive portions of the first and second adhesive sheets is peeled off from the main body sheet. This results in the first, second and third portions of the main body sheet being separated from each other. Therefore, by removing the first and third portions of the main body sheet from the food, the second portion of the main body sheet can be smoothly integrated with the food. This allows the second portion of the main body sheet to be used as a sheet to prevent hand stains when eating the food.

The first portion of the main body sheet and the second portion of the main body sheet are arranged in parallel in a second direction intersecting the first direction, and the end of the first portion of the main body sheet facing the second portion of the main body sheet and the end of the second portion of the main body sheet facing the first portion of the main body sheet are preferably formed to extend in the first direction, and the central region in the first direction is preferably formed in an arc shape that bulges out toward the first portion of the main body sheet.

With this configuration, the end of the second portion of the main body sheet facing the first portion of the main body sheet is formed in an arc shape that bulges out toward the first portion of the main body sheet in the central region in the first direction, so the second portion of the main body sheet becomes wider in the portion where the end is formed in an arc shape. This allows the second portion of the main body sheet to be used more effectively as a hand stain prevention sheet.

It is preferable that the first portion of the main sheet, the second portion of the main sheet, and the third portion of the main sheet are arranged in parallel in the second direction, the second portion of the main sheet is located between the first portion of the main sheet and the third portion of the main sheet, the end of the second portion of the main sheet facing the third portion of the main sheet and the end of the third portion of the main sheet facing the second portion of the main sheet are formed to extend in the first direction, and the central region in the first direction is formed in an arc shape that bulges out toward the third portion of the main sheet.

With this configuration, the end of the second portion of the main body sheet facing the third portion of the main body sheet is formed in an arc shape that bulges toward the third portion of the main body sheet in the central region in the first direction, so that the second portion of the main body sheet becomes wider at the portion where the end is formed in an arc shape. This allows the second portion of the main body sheet to be used more effectively as a hand stain prevention sheet.

It is preferable that the adhesive sheet has a non-adhesive portion that is not adhered to the main sheet at an end located near the first adhesive portion or the second adhesive portion that can be peeled off from the main sheet.

With this configuration, the adhesive sheet has a non-adhesive portion at its end, which makes it possible to pinch the non-adhesive portion with fingers or the like. In other words, the adhesive sheet can be easily peeled off from the main sheet by pinching and pulling the non-adhesive portion with fingers or the like as a pinch portion.

It is preferable that the second adhesive sheet has a non-adhesive portion that is not adhered to the main body sheet at an end portion located near the one of the first adhesive portion and the second adhesive portion that is peelable from the main body sheet.

With this configuration, the second adhesive sheet has a non-adhesive portion at its end, which makes it possible to pinch the non-adhesive portion with fingers or the like. In other words, the second adhesive sheet can be easily peeled off from the main sheet by pinching and pulling the non-adhesive portion with fingers or the like as a pinch portion.

The food packaging material roll of the present invention is made by continuously arranging multiple pieces of any of the above food packaging materials.

The food packaging body according to the present invention comprises any one of the food packaging materials described above and food packaged in the food packaging material, the food overlapping at least a portion of the second portion of the main body sheet.

As described above, according to the present invention, the hand stain prevention sheet can be smoothly integrated with the food when it is removed from the food.

FIG. 1 is an exploded perspective view of a food packaging material according to a first embodiment of the present invention. FIG. 2 is a plan view of the food packaging material as viewed from the outer sheet side. 3(a) to (c) are explanatory diagrams showing the process of packaging food using the food packaging material. 4(a) to 4(c) are explanatory diagrams showing the process of opening a food package in which food is packaged in the food packaging material and removing the food. FIG. 5 is an exploded perspective view of a food packaging material according to a second embodiment of the present invention. FIG. 6 is a plan view of the food packaging material as viewed from the outer sheet side. 7(a) to (c) are explanatory diagrams showing the process of opening a food package in which food is packaged in the food packaging material and removing the food. FIG. 8 is an exploded perspective view of a food packaging material according to a third embodiment of the present invention. FIG. 9 is a plan view of the food packaging material as viewed from the outer sheet side. 10(a) and 10(b) are explanatory diagrams showing the process of packaging food using the food packaging material. 11(a) and (b) are explanatory diagrams showing the process of opening a food package in which food is packaged in the food packaging material and removing the food. FIG. 12 is a plan view of a main body sheet of a food packaging material according to still another embodiment.

Below, an embodiment of the food packaging material according to the present invention will be described with reference to the drawings. Note that in the following drawings, the same or corresponding parts are given the same reference symbols and their description will not be repeated. In the following description, the first direction is the direction along the x-axis in the coordinate system of each drawing, and the second direction intersecting the first direction is the direction along the y-axis in the coordinate system of each drawing.

First Embodiment
A food packaging material 1 according to a first embodiment will be described with reference to Figures 1 to 4. As shown in Figure 1, the food packaging material 1 according to the first embodiment comprises a main body sheet 2 and at least one (two in this embodiment) adhesive sheet 3 attached to the main body sheet 2. The food packaging material 1 also comprises an outer sheet 4 formed by the main body sheet 2 and the adhesive sheet 3, and an inner sheet 5 overlapping the outer sheet 4. A sheet-like food X2, which is a part of a food X described below, is positioned between the outer sheet 4 and the inner sheet 5.

The main body sheet 2 is formed in a quadrilateral shape. Specifically, the main body sheet 2 is formed in a rectangular shape, with the first direction being the longitudinal direction and the second direction intersecting the first direction being the width direction.

The main body sheet 2 is divided between the adjacent main body sheet first portion 2A and main body sheet second portion 2B. The main body sheet 2 also has a main body sheet third portion 2C adjacent to the main body sheet second portion 2B, and is divided between the main body sheet second portion and the main body sheet third portion.

The first portion 2A of the main body sheet, the second portion 2B of the main body sheet, and the third portion 2C of the main body sheet are arranged in parallel in the second direction. The second portion 2B of the main body sheet is located between the first portion 2A of the main body sheet and the third portion 2C of the main body sheet. The first portion 2A of the main body sheet, the second portion 2B of the main body sheet, and the third portion 2C of the main body sheet are formed using separate sheet pieces. The first portion 2A of the main body sheet, the second portion 2B of the main body sheet, and the third portion 2C of the main body sheet are formed in a rectangular shape, and the first direction is the longitudinal direction.

The end 2A1 of the first portion 2A of the main body sheet facing the second portion 2B of the main body sheet (specifically, one end in the second direction) and the end 2B1 of the second portion 2B of the main body sheet facing the first portion 2A of the main body sheet (specifically, one end in the second direction) are formed to extend in the first direction (specifically, in a straight line extending in the first direction). In addition, one end 2A1 of the first portion 2A of the main body sheet in the second direction and one end 2B1 of the second portion 2B of the main body sheet in the second direction face each other.

The end 2B2 of the second portion 2B of the main body sheet facing the third portion 2C of the main body sheet (specifically, the other end in the second direction) and the end 2C1 of the third portion 2C of the main body sheet facing the second portion 2B of the main body sheet (specifically, one end in the second direction) are formed to extend in the first direction (specifically, in a straight line extending in the first direction). In addition, the other end 2B2 of the second portion 2B of the main body sheet in the second direction and one end 2C1 of the third portion 2C of the main body sheet in the second direction face each other.

The adhesive sheet 3 is formed in a band shape. The first direction is the longitudinal direction of the adhesive sheet 3. The adhesive sheet 3 overlaps one side of the main sheet 2 (the side that will be on the outside when the food is packaged). The adhesive sheet 3 overlaps the main sheet 2 over the entire length of the main sheet 2 in the first direction.

In this embodiment, one of the two adhesive sheets 3 (hereinafter also referred to as the first adhesive sheet 3a) covers the end 2A1 (specifically, one end in the second direction) of the first portion 2A of the main body sheet on the side of the second portion 2B of the main body sheet and the end 2B1 (specifically, one end in the second direction) of the second portion 2B of the main body sheet on the side of the first portion 2A of the main body sheet. Specifically, the first adhesive sheet 3a covers the entire end 2A1 of the first portion 2A of the main body sheet on the side of the second portion 2B of the main body sheet and the end 2B1 of the second portion 2B of the main body sheet on the side of the first portion 2A of the main body sheet.

The first adhesive sheet 3a includes a first adhesive portion 3a1 that is adhered to the first portion 2A of the main body sheet and a second adhesive portion 3a2 that is adhered to the second portion 2B of the main body sheet. As a result, the first portion 2A of the main body sheet and the second portion 2B of the main body sheet are connected by the first adhesive sheet 3a. In this embodiment, the first adhesive portion 3a1 and the second adhesive portion 3a2 are strip-shaped regions extending in the first direction. In addition, the first adhesive portion 3a1 and the second adhesive portion 3a2 are continuous (contacting) regions in the second direction. Specifically, a strip-shaped region extending in the first direction that is an inner region of both ends of the first adhesive sheet 3a in the second direction is adhered to the main body sheet 2, and one end side in the width direction of the strip-shaped region becomes the first adhesive portion 3a1, and the other end side in the width direction of the strip-shaped region becomes the second adhesive portion 3a2.

In addition, at least one of the first fixed portion 3a1 and the second fixed portion 3a2 in the first adhesive sheet 3a (in this embodiment, both) is peelable from the main body sheet 2. Specifically, the first fixed portion 3a1 is peelable from the first portion 2A of the main body sheet, and the second fixed portion 3a2 is peelable from the second portion 2B of the main body sheet.

The method for adhering the first adhesive portion 3a1 and the second adhesive portion 3a2 of the first adhesive sheet 3a to the main body sheet 2 is not particularly limited, and examples include heat welding, adhesive tape, adhesive, ultrasonic sealing, etc.

The first adhesive sheet 3a also has a non-adhesive portion 3a3 that is not adhered to the main body sheet 2. The non-adhesive portion 3a3 is provided at an end (both ends in the second direction in this embodiment) located near one of the first adhesive portion 3a1 and the second adhesive portion 3a2 in the first adhesive sheet 3a that is peelable from the main body sheet 2 (both in this embodiment). In this embodiment, the non-adhesive portion 3a3 is provided at both ends of the first adhesive sheet 3a in the second direction. The non-adhesive portion 3a3 is formed in a band shape extending in the first direction and is provided over the entire length of the first adhesive sheet 3a in the first direction.

In this embodiment, the other of the two adhesive sheets 3 (hereinafter also referred to as the second adhesive sheet 3b) covers the end 2C1 of the third portion 2C of the main body sheet on the second portion 2B side of the main body sheet (specifically, one end in the second direction) and the end 2B2 of the second portion 2B of the main body sheet on the third portion 2C side of the main body sheet (specifically, the other end in the second direction). Specifically, the second adhesive sheet 3b covers the entire end 2C1 of the third portion 2C of the main body sheet on the second portion 2B side of the main body sheet and the end 2B2 of the second portion 2B of the main body sheet on the third portion 2C side of the main body sheet.

The second adhesive sheet 3b has a first adhesive portion 3b1 that is adhered to the third portion 2C of the main body sheet and a second adhesive portion 3b2 that is adhered to the second portion 2B of the main body sheet. As a result, the second portion 2B of the main body sheet and the third portion 2C of the main body sheet are connected by the second adhesive sheet 3b. In this embodiment, the first adhesive portion 3b1 and the second adhesive portion 3b2 are strip-shaped regions extending in the first direction. In addition, the first adhesive portion 3b1 and the second adhesive portion 3b2 are continuous regions in the second direction. Specifically, a strip-shaped region extending in the first direction that is an inner region of both ends of the second adhesive sheet 3b in the second direction is adhered to the main body sheet 2, and one end side in the width direction of the strip-shaped region becomes the first adhesive portion 3b1, and the other end side in the width direction of the strip-shaped region becomes the second adhesive portion 3b2.

In addition, at least one of the first fixed portion 3b1 and the second fixed portion 3b2 (in this embodiment, both) of the second fixed sheet 3b is peelable from the main body sheet 2. Specifically, the first fixed portion 3b1 is peelable from the third portion 2C of the main body sheet, and the second fixed portion 3b2 is peelable from the second portion 2B of the main body sheet.

The method for adhering the first and second adhesive portions 3b1 and 3b2 of the second adhesive sheet 3b to the main body sheet 2 is not particularly limited, and for example, a method for adhering the first and second adhesive portions 3a1 and 3a2 of the first adhesive sheet 3a to the main body sheet 2 can be used.

The second adhesive sheet 3b also has a non-adhesive portion 3b3 that is not adhered to the main body sheet 2. The non-adhesive portion 3b3 is provided at an end (both ends in the second direction in this embodiment) located near one of the first adhesive portion 3b1 and the second adhesive portion 3b2 in the second adhesive sheet 3b that is peelable from the main body sheet 2 (both in this embodiment). In this embodiment, the non-adhesive portion 3b3 is provided at both ends of the second adhesive sheet 3b in the second direction. The non-adhesive portion 3b3 is formed in a band shape extending in the first direction and is provided over the entire length of the second adhesive sheet 3b in the first direction.

The outer sheet 4 configured as described above can be divided in the second direction. Specifically, by peeling off the fixed sheet 3 (specifically, the first fixed sheet 3a and the second fixed sheet 3b) from the main body sheet 2, the outer sheet 4 can be divided into the first main body sheet portion 2A, the second main body sheet portion 2B, and the third main body sheet portion 2C. More specifically, by pinching and pulling the non-fixed portion 3a3 formed on at least one of the two ends of the first fixed sheet 3a in the second direction with fingers or the like, the first fixed portion 3a1 and/or the second fixed portion 3a2 are peeled off from the main body sheet 2. As a result, the connection between the first main body sheet portion 2A and the second main body sheet portion 2B is released, and the outer sheet 4 is divided between the first main body sheet portion 2A and the second main body sheet portion 2B. Also, by pinching and pulling the non-fixed portion 3b3 formed on at least one of the two ends of the second fixed sheet 3b in the second direction with fingers or the like, the first fixed portion 3b1 and/or the second fixed portion 3b2 are peeled off from the main body sheet 2. This releases the connection between the second portion 2B of the main body sheet and the third portion 2C of the main body sheet, and the outer sheet 4 is divided between the second portion 2B of the main body sheet and the third portion 2C of the main body sheet.

The inner sheet 5 can be split in the second direction. Specifically, the inner sheet 5 has two inner sheet pieces 5a, 5a. The two inner sheet pieces 5a, 5a are arranged in parallel in the second direction and have an overlapping portion 5b where their ends overlap. The overlapping portion 5b is located approximately in the center of the inner sheet 5 in the second direction and is formed to extend in the first direction. The two inner sheet pieces 5a, 5a are separated in the second direction, so that the inner sheet 5 is split in the second direction.

In the food packaging material 1 configured as described above, the outer sheet 4 (specifically, the main body sheet 2) and the inner sheet 5 are joined so as to surround the sheet-like food X2. Specifically, as shown in FIG. 2, the food packaging material 1 has end joints 1S1, 1S1 where the outer sheet 4 (specifically, the main body sheet 2) and the inner sheet 5 are joined at both ends 1a, 1b in the first direction, and side joints 1S2, 1S2 where the outer sheet 4 (specifically, the main body sheet 2) and the inner sheet 5 are joined at both ends in the second direction. The end joint 1S1 is formed at a position that does not overlap with the overlapping portion 5b of the inner sheet 5. In addition, the end joint 1S1 is formed at a position that does not overlap with the fixing sheet 3 (specifically, the first fixing sheet 3a and the second fixing sheet 3b). In addition, the side joints 1S2 are formed with a gap in the first direction. Between adjacent side joints 1S2, communication sections 1S3 are formed that connect the space that contains the sheet-like food X2 to the space outside the food packaging material 1. The food packaging material 1 formed as described above has a rectangular shape, and cutouts are formed in the areas that correspond to the four corners.

When using the food packaging material 1 configured as described above to wrap triangular cooked rice processed food X1 as shown in FIG. 3(a), the cooked rice processed food X1 is placed on the inner sheet 5 side of the food packaging material 1. At this time, the triangular cooked rice processed food X1 is placed evenly on the left and right sides of the overlapping portion 5b, and the cooked rice processed food X1 is positioned so that one corner of the triangular cooked rice processed food X1 faces one end 1a of the food packaging material 1 in the first direction.

Next, as shown in FIG. 1B, the food packaging material 1 is folded in half in the first direction so that the area on one end 1a in the first direction matches the area on the opposite end 1b, and the folded part is folded along the side (triangular slope) of the triangular cooked rice processed food X1. As a result, the area on one end 1a in the first direction of the food packaging material 1 covers the front of the triangular cooked rice processed food X1, and the area on the other end 1b covers the back of the triangular cooked rice processed food X1. At this time, the second portion 2B of the main body sheet is U-shaped so that the cooked rice processed food X1 is located inside, and covers the front and back of the cooked rice processed food X1. Then, the area of the food packaging material 1 that does not overlap with the cooked rice processed food X1 is folded back along the triangular cooked rice processed food X1, and is placed on the back of the cooked rice processed food X1 as shown in FIG. 1C. Then, a label (not shown) is attached to the overlapping portion of the triangular cooked rice processed food X1 on the back of the food packaging material 1, forming a food package 100 in which the food X is packaged in the food packaging material 1, as shown in FIG. 4(a).

As described above, food X comprises cooked rice processed food X1 and sheet-like food X2 attached to the cooked rice processed food X1. The cooked rice processed food X1 is not particularly limited, and examples thereof include rice balls and sushi. The shape of the cooked rice processed food X1 is not particularly limited, and examples thereof include the above-mentioned triangular shape, as well as a square shape, a sphere, a bale shape, a circle, an ellipse, and the like. The sheet-like food X2 is not particularly limited, and examples thereof include kelp and tatami-mat iwashi. The shape of the sheet-like food X2 is not particularly limited, and examples thereof include the above-mentioned quadrangular shape, as well as a triangular shape, a circle, and the like.

When removing food X from the food packaging body 100 as described above, as described above, the non-adhesive portion 3a3 of the first adhesive sheet 3a is pinched and pulled with fingers or the like to peel the first adhesive portion 3a1 and the second adhesive portion 3a2 of the first adhesive sheet 3a from the main body sheet 2, and the first adhesive sheet 3a is removed from the main body sheet 2. Also, the non-adhesive portion 3b3 of the second adhesive sheet 3b is pinched and pulled with fingers or the like to peel the first adhesive portion 3b1 and the second adhesive portion 3b2 of the second adhesive sheet 3b from the main body sheet 2, and the second adhesive sheet 3b is removed from the main body sheet 2. This divides the outer sheet 4 into the first main body sheet portion 2A, the second main body sheet portion 2B, and the third main body sheet portion 2C, as shown in FIG. 2(b). Then, by pulling the first portion 2A and the third portion 2C of the main body sheet in the second direction, the food X (a combination of the cooked rice food X1 and the sheet-like food X2) can be taken out with the second portion 2B of the main body sheet attached, as shown in FIG. 1C. This allows the second portion 2B of the main body sheet to function as a hand-stain prevention sheet, and the food X can be held in the hands through the hand-stain prevention sheet, allowing the food X to be eaten hygienically.

Second Embodiment
Next, a food packaging material 7 according to a second embodiment of the present invention will be described with reference to Figures 5 to 7. The food packaging material 7 according to the second embodiment differs from the food packaging material 1 according to the first embodiment mainly in that it does not include an inner sheet 5 and that the main body sheet 2 does not include a main body sheet third portion 2C. Therefore, the following will describe the differences from the food packaging material 1 according to the first embodiment.

As shown in Figures 5 and 6, the food packaging material 7 according to this embodiment comprises a main body sheet 2 and one adhesive sheet 3. The food packaging material 7 also comprises two sheet-like overlapping portions 8 arranged to overlap one side of the main body sheet 2 where the adhesive sheet 3 overlaps and the other side opposite (the side that will be the food side when the food is packaged).

In this embodiment, the main body sheet 2 includes a first main body sheet portion 2A and a second main body sheet portion 2B, and is divided between the first main body sheet portion 2A and the second main body sheet portion 2B. The first main body sheet portion 2A and the second main body sheet portion 2B are arranged in parallel in the second direction. The first main body sheet portion 2A and the second main body sheet portion 2B are formed using separate sheet pieces. The first main body sheet portion 2A and the second main body sheet portion 2B are formed in a rectangular shape, with the first direction being the longitudinal direction.

The end 2A1 of the first portion 2A of the main body sheet facing the second portion 2B of the main body sheet (specifically, one end in the second direction) and the end 2B1 of the second portion 2B of the main body sheet facing the first portion 2A of the main body sheet (specifically, one end in the second direction) are formed to extend in the first direction (specifically, in a straight line extending in the first direction). In addition, one end 2A1 of the first portion 2A of the main body sheet in the second direction and one end 2B1 of the second portion 2B of the main body sheet in the second direction face each other.

The adhesive sheet 3 is formed in a band shape. The first direction is the longitudinal direction of the adhesive sheet 3. The adhesive sheet 3 overlaps one side of the main sheet 2 (the side that will be on the outside when the food is packaged). Specifically, the adhesive sheet 3 overlaps the main sheet 2 over the entire length of the main sheet 2 in the first direction.

The adhesive sheet 3 covers the end 2A1 (specifically, one end in the second direction) of the first portion 2A of the main sheet on the side of the second portion 2B of the main sheet and the end 2B1 (specifically, one end in the second direction) of the second portion 2B of the main sheet on the side of the first portion 2A of the main sheet. Specifically, the adhesive sheet 3 covers the entire end 2A1 of the first portion 2A of the main sheet on the side of the second portion 2B of the main sheet and the end 2B1 of the second portion 2B of the main sheet on the side of the first portion 2A of the main sheet.

The adhesive sheet 3 includes a first adhesive portion 31 that is attached to the first portion 2A of the main sheet and a second adhesive portion 32 that is attached to the second portion 2B of the main sheet. As a result, the first portion 2A of the main sheet and the second portion 2B of the main sheet are connected by the adhesive sheet 3. In this embodiment, the first adhesive portion 31 and the second adhesive portion 32 are strip-shaped regions extending in the first direction. The first adhesive portion 31 and the second adhesive portion 32 are continuous regions in the second direction. Specifically, a strip-shaped region extending in the first direction that is an inner region of both ends of the adhesive sheet 3 in the second direction is attached to the main sheet 2, and one end side in the width direction of the strip-shaped region becomes the first adhesive portion 31, and the other end side in the width direction of the strip-shaped region becomes the second adhesive portion 32.

In addition, at least one of the first fixed portion 31 and the second fixed portion 32 in the adhesive sheet 3 (in this embodiment, both) is peelable from the main body sheet 2. Specifically, the first fixed portion 31 is peelable from the first portion 2A of the main body sheet, and the second fixed portion 32 is peelable from the second portion 2B of the main body sheet.

The method for adhering the first and second adhesive portions 31 and 32 of the adhesive sheet 3 to the main body sheet 2 is not particularly limited, and for example, a method for adhering the first and second adhesive portions 3a1 and 3b1 and 3a2 and 3b2 in the first embodiment to the main body sheet 2 can be used.

The adhesive sheet 3 also has a non-adhesive portion 33 that is not adhered to the main body sheet 2. The non-adhesive portion 33 is provided at an end (both ends in the second direction in this embodiment) located near one of the first and second adhesive portions 3a1 and 3a2 in the adhesive sheet 3 that is peelable from the main body sheet 2 (both in this embodiment). In this embodiment, the non-adhesive portion 33 is formed in a band shape extending in the first direction at both ends of the adhesive sheet 3 in the second direction. The non-adhesive portion 33 is provided over the entire length of the adhesive sheet 3 in the first direction.

Then, at least one of the non-adhered portions 33 formed at both ends of the adhesive sheet 3 in the second direction is pinched with fingers or the like and pulled to peel off the first adhesive portion 31 and/or the second adhesive portion 32 from the main body sheet 2. This releases the connection between the first portion 2A of the main body sheet and the second portion 2B of the main body sheet, and the food packaging material 7 is divided between the first portion 2A of the main body sheet and the second portion 2B of the main body sheet.

The two sheet-like overlapping portions 8, 8 are formed in a band shape extending in the first direction. The two sheet-like overlapping portions 8, 8 are arranged over the entire area between both ends of the main body sheet 2 in the first direction. The two sheet-like overlapping portions 8, 8 are arranged at a distance in the second direction, and the adhesive sheet 3 is located between the two sheet-like overlapping portions 8, 8. One sheet-like overlapping portion 8 overlaps one end of the main body sheet 2 in the second direction, and the other sheet-like overlapping portion 8 overlaps the other end of the main body sheet 2 in the second direction. The two sheet-like overlapping portions 8, 8 are arranged at positions away from both end edges of the main body sheet 2 in the second direction.

At least a portion of each sheet-like overlapping portion 8 is bonded to the main body sheet 2. For example, a strip-shaped portion extending in the first direction on the inside of both ends of the sheet-like overlapping portion 8 in the second direction may be bonded to the main body sheet 2, or the entire sheet-like overlapping portion 8 may be bonded to the main body sheet 2. The method for bonding the sheet-like overlapping portion 8 to the main body sheet 2 is not particularly limited, and for example, heat sealing, ultrasonic sealing, adhesives, etc. can be used.

The thickness of the sheet-like overlapping portion 8 is not particularly limited. For example, the thickness of the sheet-like overlapping portion 8 may be approximately the same as that of the adhesive sheet 3, or may be thicker or thinner than the adhesive sheet 3. "Approximately the same thickness" means that the ratio of the thickness of the sheet-like overlapping portion 8 to the thickness of the adhesive sheet 3 is 0.9 to 1.1.

The sheet material constituting the sheet-like overlapping portion 8 is not particularly limited, and may be the same as or a different sheet material (e.g., nonwoven fabric, etc.) as the main sheet 2. In order to achieve approximately the same thickness as the adhesive sheet 3, it is preferable to use the same sheet material as the sheet material constituting the adhesive sheet 3.

When food X' is packaged using the food packaging material 7 configured as described above as shown in FIG. 7(a), the food X' is wrapped in the food packaging material 7 along the shape of the food X' so that the other side of the main body sheet 2 (the side opposite to the side on which the adhesive sheet 3 is superimposed) faces the food X'. At this time, an area is formed in the second portion 2B of the main body sheet that faces the food X'. This forms a food package 100 in which the food X' is packaged in the food packaging material 7. Note that the food X' is not particularly limited, and examples include hamburgers, daifuku, etc.

When food X' is removed from the food packaging body 100 as described above, the first and second fixed portions 31 and 32 are peeled off from the main body sheet 2 by pinching and pulling the non-fixed portion 33 of the adhesive sheet 3 with fingers or the like, as described above, and the adhesive sheet 3 is removed from the main body sheet 2. This leaves the food packaging material 7 with the first portion 2A of the main body sheet and the second portion 2B of the main body sheet as shown in FIG. 1B. Then, by removing the first portion 2A of the main body sheet from the food X', the food X' can be removed with the second portion 2B of the main body sheet attached, as shown in FIG. 1C. This allows the second portion 2B of the main body sheet to function as a hand-stain prevention sheet, and the food X' can be held in the hand through the hand-stain prevention sheet, so that the food X' can be eaten hygienically.

Third Embodiment
Next, a food packaging material 10 according to a third embodiment of the present invention will be described with reference to Figures 8 to 11. The food packaging material 10 according to the third embodiment differs from the food packaging material 7 according to the second embodiment mainly in that it does not include a sheet-like overlapping portion 8. Therefore, the following will describe the differences from the food packaging material 7 according to the second embodiment.

The food packaging material 10 according to this embodiment is the same as the food packaging material 7 according to the second embodiment except for the sheet-like overlapping portion 8.

When packaging food X'' shown in FIG. 10(a) using such food packaging material 10, a pillow packaging machine or the like can be used. Specifically, the food packaging material 10 is formed into a cylindrical shape so that both ends 1a, 1b of the food packaging material 10 in the first direction face each other, and the facing ends 1a, 1b are sealed together (specifically, the sealed portion 1S4 is formed), the food X'' is placed inside, and the openings at both ends are sealed (specifically, the sealed portion 1S4 is formed). At this time, the second portion 2B of the main body sheet has an area that faces each other with the food X'' sandwiched between them. As a result, as shown in FIG. 10(b), a food package 100 is formed in which the food X'' is packaged in the food packaging material 10. The food X'' is not particularly limited, and examples thereof include hot dogs and eclairs.

When food X'' is removed from the food package 100, as in the second embodiment, the first and second fixed portions 31 and 32 are peeled off from the main body sheet 2 by pinching and pulling the non-fixed portion 33 of the fixing sheet 3 with fingers or the like, and the fixing sheet 3 is removed from the main body sheet 2. As a result, as shown in FIG. 1B, the food packaging material 10 is divided into the first portion 2A of the main body sheet and the second portion 2B of the main body sheet. Then, by removing the first portion 2A of the main body sheet from the food X'', the food X'' can be removed with the second portion 2B of the main body sheet attached, as shown in FIG. 1C. This allows the second portion 2B of the main body sheet to function as a hand-stain prevention sheet, and the food X'' can be held by hand through the hand-stain prevention sheet, so that the food X'' can be eaten hygienically.

As described above, the food packaging materials 1, 7, and 10 according to each embodiment can smoothly integrate the food X and the hand stain prevention sheet (main body sheet second portion 2B) when removed from the food X.

That is, with food X packaged in food packaging material 1, 7, 10, at least one of the first adhesive portion 3a1, 3b1, 31 and the second adhesive portion 3a2, 3b2, 32 in adhesive sheet 3, 3a, 3b is peeled off from main body sheet 2. This separates main body sheet first portion 2A from main body sheet second portion 2B. Therefore, by removing main body sheet first portion 2A from food X, main body sheet second portion 2B and food X can be smoothly integrated. This allows main body sheet second portion 2B to be used as a hand stain prevention sheet when eating food X.

In addition, with food X packaged in the food packaging material 1, at least one of the first adhesive portion 3a1, 3b1 and the second adhesive portion 3a2, 3b2 in the first adhesive sheet 3a and the second adhesive sheet 3b is peeled off from the main body sheet 2. This results in the first portion 2A of the main body sheet, the second portion 2B of the main body sheet, and the third portion 2C of the main body sheet being separated. Therefore, by removing the first portion 2A of the main body sheet and the third portion 2C of the main body sheet from the food X, the second portion 2B of the main body sheet and the food X can be smoothly integrated together. This allows the second portion 2B of the main body sheet to be used as a sheet to prevent hand stains when eating food X.

In addition, the end 2B1 of the second portion 2B of the main body sheet on the side of the first portion 2A of the main body sheet is formed in an arc shape that bulges toward the first portion 2A of the main body sheet in the central region in the first direction, so that the second portion 2B of the main body sheet becomes wider in the portion where the end 2B1 is formed in an arc shape. This allows the second portion 2B of the main body sheet to be used more effectively as a hand stain prevention sheet.

In addition, the end 2B2 of the second portion 2B of the main body sheet on the side of the third portion 2C of the main body sheet is formed in an arc shape that bulges out toward the third portion 2C of the main body sheet in the central region in the first direction, so that the second portion 2B of the main body sheet becomes wider in the portion where the end 2B2 is formed in an arc shape. This allows the second portion 2B of the main body sheet to be used more effectively as a hand stain prevention sheet.

In addition, the adhesive sheets 3, 3a, and 3b have non-adhesive portions 3a3, 3b3, and 33 at their ends, which allows the non-adhesive portions 3a3, 3b3, and 33 to be pinched with fingers or the like. In other words, the adhesive sheets 3, 3a, and 3b can be easily peeled off from the main body sheet 2 by pinching and pulling the non-adhesive portions 3a3, 3b3, and 33 with fingers or the like as pinching portions.

The food packaging material according to the present invention is not limited to the above-mentioned embodiment, and various modifications are possible without departing from the gist of the present invention. In addition, the configurations and methods of the above-mentioned embodiments may be arbitrarily adopted and combined (the configurations and methods of one embodiment may be applied to the configurations and methods of other embodiments), and further, the configurations and methods of the various modified examples described below may be arbitrarily selected and adopted in the configurations and methods of the above-mentioned embodiments.

For example, in the above embodiment, the end 2A1 (specifically, one end in the second direction) of the first portion 2A of the main body sheet on the side of the second portion 2B of the main body sheet and the end 2B1 (specifically, one end in the second direction) of the second portion 2B of the main body sheet on the side of the first portion 2A of the main body sheet are formed in a straight line, but are not limited to this. For example, as shown in FIG. 12, the central region in the first direction may be formed in an arc shape that bulges toward the first portion 2A of the main body sheet.

In the above embodiment, the end 2C1 of the third portion 2C of the main body sheet on the side of the second portion 2B of the main body sheet (specifically, one end in the second direction) and the end 2B2 of the second portion 2B of the main body sheet on the side of the third portion 2C of the main body sheet (specifically, the other end in the second direction) are formed in a straight line, but are not limited to this. For example, as shown in FIG. 12, the central region in the first direction may be formed in an arc shape that bulges toward the third portion 2C of the main body sheet.

In the above embodiment, one end 2A1 of the first portion 2A of the main body sheet and one end 2B1 of the second portion 2B of the main body sheet face each other in the second direction, but this is not limited to this, and for example, one end 2A1 of the first portion 2A of the main body sheet and one end 2B1 of the second portion 2B of the main body sheet may overlap. In the above embodiment, the other end 2B2 of the second portion 2B of the main body sheet and one end 2C1 of the third portion 2C of the main body sheet face each other in the second direction, but this is not limited to this, and for example, the other end 2B2 of the second portion 2B of the main body sheet and one end 2C1 of the third portion 2C of the main body sheet may overlap.

In the above embodiment, the adhesive sheet 3 is peeled off from the main body sheet 2 by pinching and pulling the non-adhered portions 3a3, 3b3, 33, but this is not limiting. For example, the adhesive sheet 3 may be peeled off from the main body sheet 2 by pulling the first main body sheet portion 2A and the second main body sheet portion 2B apart. In this case, the adhesive sheet 3 may be peeled off from one of the first main body sheet portion 2A and the second main body sheet portion 2B and remain attached to the other of the first main body sheet portion 2A and the second main body sheet portion 2B. In this case, the adhesive sheet 3 may be attached to the other surface of the main body sheet 2 (the surface facing the food).

In addition, in the above embodiment, the main body sheet 2 is composed of multiple sheet pieces, but this is not limited to this. For example, a single sheet material may be partially cut, and the first main body sheet portion 2A and the second main body sheet portion 2B, or the second main body sheet portion 2B and the third main body sheet portion 2C may be formed by adjacent areas sandwiching the cut portion.

In addition, in the above embodiment, the adhesive sheet 3 is formed in a strip shape, but this is not limited to this and may be, for example, a square shape, a rectangular shape, a circle shape, etc.

In addition, in the above embodiment, the adhesive sheet 3 is configured to have non-adhesive portions 3a3, 3b3, and 33, but this is not limited thereto. For example, the adhesive sheet 3 may be configured so that the entire sheet is adhered to the main body sheet 2 (i.e., it does not have non-adhesive portions 3a3, 3b3, and 33).

In addition, in the above embodiment, the non-adhesive portions 3a3, 3b3, 33 are formed continuously over the entire length between both ends of the adhesive sheet 3 in the first direction, but are not limited to this. For example, they may be formed intermittently between both ends of the adhesive sheet 3 in the first direction, or may be formed in a portion between both ends of the adhesive sheet 3 in the first direction.

The first fixing portions 3a1, 3b1, 31 and the second fixing portions 3a2, 3b2, 32 are formed continuously over the entire area between both ends of the fixing sheet 3 in the first direction, but are not limited to this. For example, they may be formed intermittently between both ends of the fixing sheet 3 in the first direction, or may be formed in a portion between both ends of the fixing sheet 3 in the first direction.

In addition, in the above embodiment, the first fixing portions 3a1, 3b1, 31 and the second fixing portions 3a2, 3b2, 32 are continuous (contacting) in the second direction, but this is not limited thereto, and for example, they may be positioned with a gap in between in the second direction.

In addition, in the second embodiment, the sheet-like overlapping portion 8 overlaps the other surface of the main body sheet 2 (the surface that faces the food when the food is wrapped), but this is not limited to this, and for example, the sheet-like overlapping portion 8 may overlap one surface of the main body sheet 2 (the surface that faces the outside when the food is wrapped).

In the second embodiment, the sheet-like overlapping portion 8 is arranged continuously over the entire area between both ends of the main body sheet 2 in the first direction, but this is not limited thereto, and for example, multiple sheet-like overlapping portions 8 may be arranged at intervals in the first direction. In the second embodiment, the food packaging material 7 is configured to have two sheet-like overlapping portions 8, but this is not limited thereto, and for example, it may be configured to have only one sheet-like overlapping portion 8.

In the second embodiment, the sheet-like overlapping portion 8 is formed separately from the main body sheet 2, but this is not limited thereto, and it may be, for example, integral with the main body sheet 2. Specifically, the opposing ends of a single sheet material forming the main body sheet 2 and the sheet-like overlapping portion 8 may be folded back, so that the folded back ends form the sheet-like overlapping portion 8, and the main body sheet 2 is formed by the other parts.

The food packaging materials 1, 7, and 10 according to each of the above embodiments may be connected together (specifically, connected together in a first direction) to form a raw food packaging material (not shown). In other words, the food packaging materials 1, 7, and 10 may be cut out from a raw food packaging material.

In addition, in the first embodiment described above, the inner sheet 5 has two inner sheet pieces 5a, 5a, but this is not limited to this, and it may be configured to have, for example, three or more inner sheet pieces 5a....

In addition, in the first embodiment described above, the food packaging material 1 is folded in half to sandwich the cooked rice processed food X1, and then the area of the food packaging material 1 that does not overlap with the cooked rice processed food X1 is folded back along the triangular cooked rice processed food X1, but this is not limited to this. For example, the area of the food packaging material 1 that does not overlap with the cooked rice processed food X1 may not be folded back along the triangular cooked rice processed food X1, and the outer periphery of the area on the front side of the cooked rice processed food X1 and the outer periphery of the area on the back side of the food packaging material 1 may be sealed to form a rectangular food package (not shown).

In the above embodiment, the materials of the main body sheet 2, the adhesive sheet 3, and the inner sheet 5 are not particularly limited, and examples thereof include synthetic resin films such as polyethylene and polypropylene, composite films of these synthetic resins and fibers, paper, and composite sheets of paper and synthetic resin. Examples of synthetic resin films include uniaxially oriented synthetic resin films, biaxially oriented synthetic resin films, and non-oriented synthetic resin films. The materials of the main body sheet 2, the adhesive sheet 3, and the inner sheet 5 may be the same or different. At least one of the main body sheet 2, the adhesive sheet 3, and the inner sheet 5 may be transparent, opaque, or translucent. Since the second portion 2B of the main body sheet is in direct contact with the food X, it is preferable to use a material that is difficult for the food X to adhere to.

1, 7, 10...food packaging material, 1S1...end joint, 1S2...side joint, 1S3...connection, 1S4...seal, 2...main body sheet, 2A...first part of main body sheet, 2B...second part of main body sheet, 2C...third part of main body sheet, 3...adhesive sheet, 3a...first adhesive sheet, 3a1...first adhesive part of first adhesive sheet, 3a2...second adhesive part of first adhesive sheet, 3a3...non-adhesive part of first adhesive sheet, 3b...second adhesive Sheet, 3b1...first fixed portion of second fixed sheet, 3b2...second fixed portion of second fixed sheet, 3b3...non-fixed portion of second fixed sheet, 4...outer sheet, 5...inner sheet, 5a...inner sheet piece, 5b...overlapped portion, 8...sheet-like overlapping portion, 31...first fixed portion of fixed sheet, 32...second fixed portion of fixed sheet, 33...non-fixed portion of fixed sheet, 100...food package, X...food, X1...cooked rice processed food, X2...sheet-like food

Claims (7)

The device includes a main body sheet and at least one adhesive sheet that is attached to the main body sheet,
The main body sheet is divided between a first main body sheet portion and a second main body sheet portion serving as a hand stain prevention sheet, the first main body sheet portion and the second main body sheet portion being adjacent to each other,
the adhesive sheet covers an end of the first portion of the main body sheet facing the second portion of the main body sheet and an end of the second portion of the main body sheet facing the first portion of the main body sheet, and includes a first adhesive portion adhered to the first portion of the main body sheet and a second adhesive portion adhered to the second portion of the main body sheet;
Both the first and second adhesive portions of the adhesive sheet are peelable from the main body sheet;
the adhesive sheet has a non-adhesive portion that is not adhered to the main body sheet at an end portion located near one of the first adhesive portion and the second adhesive portion that is peelable from the main body sheet;
Food packaging materials. the main body sheet further includes a main body sheet third portion adjacent to the main body sheet second portion, and is divided between the main body sheet second portion and the main body sheet third portion;
At least two fastening sheets are provided,
a first adhesive sheet is provided as an adhesive sheet covering an end portion of the first portion of the main sheet on the second portion side of the main sheet and an end portion of the second portion of the main sheet on the first portion side of the main sheet, and a second adhesive sheet is provided as an adhesive sheet covering an end portion of the second portion of the main sheet on the third portion side of the main sheet and an end portion of the third portion of the main sheet on the second portion side of the main sheet,
the first adhesive sheet has a first adhesive portion adhered to a first region of the main body sheet and a second adhesive portion adhered to a second region of the main body sheet, and both the first adhesive portion and the second adhesive portion of the first adhesive sheet are peelable from the main body sheet;
the second adhesive sheet has a first adhesive portion adhered to the third region of the main body sheet and a second adhesive portion adhered to the second region of the main body sheet, and both the first adhesive portion and the second adhesive portion of the second adhesive sheet are peelable from the main body sheet;
The food packaging material according to claim 1. the first portion of the main body sheet and the second portion of the main body sheet are arranged in parallel in a second direction intersecting the first direction,
an end portion of the first portion of the main body sheet on the second portion side of the main body sheet and an end portion of the second portion of the main body sheet on the first portion side of the main body sheet are formed to extend in a first direction, and a region on a central side in the first direction is formed in an arc shape that bulges out toward the first portion side of the main body sheet;
The food packaging material according to claim 1 or 2. the first portion of the main body sheet, the second portion of the main body sheet, and the third portion of the main body sheet are arranged in parallel in the second direction, and the second portion of the main body sheet is located between the first portion of the main body sheet and the third portion of the main body sheet;
an end portion of the second portion of the main body sheet facing the third portion of the main body sheet and an end portion of the third portion of the main body sheet facing the second portion of the main body sheet are formed to extend in a first direction, and a region on a central side in the first direction is formed in an arc shape bulging toward the third portion of the main body sheet;
The food packaging material according to claim 2 or 3. the second adhesive sheet has a non-adhesive portion that is not adhered to the main body sheet at an end portion located near one of the first adhesive portion and the second adhesive portion that is peelable from the main body sheet;
The food packaging material according to any one of claims 2 to 4 . A plurality of food packaging materials according to any one of claims 1 to 5 are provided in succession.
Food packaging material roll. The food packaging material according to any one of claims 1 to 5 and food packaged in the food packaging material,
The food overlaps at least a portion of the second portion of the main body sheet.
Food packaging.