JP2024024084A - Packaging materials for rice balls and wrapped rice balls - Google Patents

Abstract

An object of the present invention is to provide a packaging material for rice balls and a packaged rice ball that is easy to open.
[Solution]
The rice ball packaging material 1 of the present invention includes a substantially rectangular sheet 2, an opening area 5 provided along the length direction at the center of the sheet, and a cutting portion provided on the outer surface of the sheet. It has a cover sheet 9 that covers the opening area 5 to prevent air from entering and exiting through the container,
It has two parallel opening lines 6 and an end opening line 7 that connects the upper ends and lower ends of the two parallel opening lines 6, and has two parallel opening lines 6 and an end opening line 7. 7 forms a closed loop surrounding the opening area 5.
[Selection diagram] Figure 1

Description

The present invention relates to a packaging material for rice balls.

A widely used packaging material for rice balls is one in which a sheet of seaweed is stored between the outer sheet and the inner sheet, so that the nori sheet does not come into contact with the rice balls when the rice balls are being packaged. . The two inner sheets are arranged so that their edges overlap along the centerline, and the overlap is not bonded or has a weak connection that easily separates. On the other hand, the outer sheet is provided with an opening aid line such as cut tape along the center line, which allows the outer sheet to be cut left and right when opening the package. For example, Patent Document 1 and Patent Document 2 describe an outer wrapping film for rice balls, in which an opening aid tape is attached to a rectangular film body, and a disk-shaped rice ball is wrapped with this outer wrapping film for rice balls. . When ready to eat, use this opening aid tape to open the package. In addition to this, packaging materials for rice balls that have been put into practical use so far are made of plastic film.

Patent Document 3 describes a packaging material for rice balls in which an outer film 1 is provided with a surface layer made of paper or nonwoven fabric. Further, Patent Document 4 and Patent Document 5 describe packaging materials for rice balls using glassine paper.

Design Registration No. 1203540 Publication Design Registration No. 1204011 Publication JP2004-26535 JP2000-62835 JP2000-279113

Conventional packaging materials for rice balls were made entirely of plastic film. However, after use, plastic containers must be disposed of separately from flammable materials. In addition, uncollected plastics leak into the environment, becoming one of the causes of marine pollution, and their negative impact on the ecosystem has become a problem. Therefore, a packaging material for rice balls that uses less plastic is desired.

The food packaging material of Patent Document 3 uses Japanese paper for the outer film. However, not all of the outer film is paper or nonwoven fabric; the outer film base is made of synthetic resin, and only the surface layer is paper or nonwoven fabric. Therefore, the amount of plastic used is not decreasing, and the amount of waste is increasing due to the paper or non-woven surface layer.

The rice ball packaging materials of Patent Document 4 and Patent Document 5 use glassine paper for the exterior sheet. However, paper is harder than plastic film and has no directionality, making it difficult to cut. In Patent Document 4 and Patent Document 5, a cut tape or cut thread is provided in the center of the outer sheet, but this makes it difficult to cut the paper without applying considerable force. Glassine paper is not strong enough to be used as a packaging material for rice balls, but if a stronger paper is used, it will be more difficult to open the package.

An object of the present invention is to provide a packaging material for rice balls and a packaged rice ball that reduces the amount of plastic used and is easy to open.

In order to solve the above-mentioned problems, the rice ball packaging material of the present invention includes a substantially rectangular outer sheet that is a paper sheet, an inner sheet connected along the outer periphery of the outer sheet, and a material between the outer sheet and the inner sheet. It has a seaweed sheet housed in a seaweed sheet, a tear line provided along the length in the center of the outer sheet, and a cover sheet that covers the tear line provided on the outer surface of the outer sheet. Two parallel opening lines provided along the length direction at the center of the outer sheet and an opening area formed between the two parallel opening lines may be formed, and further, In addition to the two parallel opening lines, an end opening line connecting the upper ends and the lower ends, and a notch provided from the center of each end opening line to the outside of the opening area are provided. be able to.

The packaged rice ball of the present invention also includes a rectangular outer sheet that is a paper sheet, an inner sheet connected along the outer periphery of the outer sheet, a seaweed sheet stored between the outer sheet and the inner sheet, and an outer sheet. The triangular rice ball is wrapped in a rice ball packaging material that has an opening line provided in the center of the sheet along its length and a cover sheet that covers the opening line provided on the outer surface of the outer sheet. A tear line and a cover sheet are provided across the two triangular sides of the rice ball and the bottom surface between them.

In this invention, a paper sheet is used instead of plastic for the outer sheet, which greatly reduces the amount of plastic used and reduces the environmental impact. An opening line and a cover sheet are provided across the two triangular sides of the triangular rice ball and the bottom surface between them, and the outer sheet can be easily divided into right and left sides when opening.

It is a top view which shows the 1st example of the packaging material for rice balls. It is a rear view of the same. It is a sectional view taken along the line AA. FIG. 2 is a plan view showing a first example of an outer sheet. It is a perspective view showing a state where rice balls are placed on a packaging material for rice balls. It is a perspective view showing a packaged rice ball. It is a top view which shows the 2nd example of the packaging material for rice balls. It is a top view which shows the 2nd example of an outer sheet.

Embodiments for carrying out the invention will be described based on the drawings. FIG. 1 is a plan view showing a first example of a packaging material for rice balls, FIG. 2 is a plan view thereof, and FIG. 3 is a sectional view taken along line AA of the same. The packaging material 1 for rice balls includes a substantially rectangular outer sheet 2 which is a paper sheet, an inner sheet 3 connected along the outer periphery of the outer sheet 2, and a seaweed sheet 4 stored between the outer sheet and the inner sheet. and has.

The outer sheet 2 will be explained. FIG. 4 is a plan view showing the outer sheet. The outer sheet 2 is generally rectangular. It does not have to be completely rectangular; for example, notches may be provided at the four corners to reduce folding at the four corners when the rice ball is packaged. In this invention, the outer sheet 2 is a paper sheet. The paper sheet is not particularly limited as long as it can safely package food and has sufficient strength. Further, in order to obtain a certain degree of waterproofness and surface smoothness, it is preferable to perform surface treatment such as plastic coating on both sides.

A tear line 6 is provided along the center line of the outer sheet 2. In this example, two parallel opening lines 6 are provided at a predetermined distance along the center line, and the area sandwiched between them becomes the opening area 5. Furthermore, as the unsealing line forming the unsealing area 5, in addition to these two parallel unsealing lines 6, an end unsealing line 7 is provided that connects the upper ends and lower ends of the opening lines. A closed loop surrounding the opening area 5 is formed by the parallel opening line 6 and the end opening line 7. A notch 8 is also provided extending from the center of each end opening line 7 to the outside of the opening area 5. Here, the unsealing line is a line that has been processed to facilitate cutting, and here, perforations are provided in which the cutting portion and the connecting portion are periodically repeated. It also includes lines that are cut over long distances, as will be described later in another example.

Next, the inner sheet 3 will be explained. The inner sheet 3 has a substantially elongated shape having the same outer shape as the outer sheet, and is made of a thin plastic film. It is designed to easily separate left and right along the center line. In this example, the left and right sheets are two separate approximately rectangular sheets, which overlap at the center. Although this overlapping portion may be weakly bonded, it is not connected in this example.

The outer sheet 2 and the inner sheet 3 are connected to each other along both sides. Further, the outer sheet 2 and the inner sheet 3 may also be connected at the edges along the upper and lower sides, which are connected in this example. A rectangular seaweed sheet 4 for wrapping rice balls is inserted between the outer sheet 2 and the inner sheet 3.

A cover sheet 9 is provided on the opening area 5 on the outer surface of the outer sheet 2 to cover the opening area 5. The cover sheet 9 may be a plastic sheet that is easy to adhere to, has sealing properties, and can be easily peeled off when the package is opened, but the amount of plastic used may be reduced by using a paper sheet. A grip portion 10 is provided at one end of the cover sheet 9. The outer sheet 2 and the cover sheet 9 have high sealing properties, are hard to peel off during packaging, and are connected in such a way that they can be easily peeled off when unpacking. For example, a pressure-sensitive adhesive such as polyester, acrylic, or rubber may be applied to the cover sheet 9 except for the tabs 10, thereby making the connection possible. In particular, it is preferable to provide an adhesion-reducing area on the outside of the opening area 5 by applying a coating to make the surface smooth, so that the adhesiveness is weaker than on the inside of the opening area 5.

Next, an example of a packaged rice ball packaged with the above-mentioned rice ball packaging material will be described. FIG. 5 is a perspective view showing a state in which rice balls are placed on a rice packaging material. The rice packaging material 1 is placed with the side with the inner sheet 3 facing up, and placed so that the bottom surface of the triangular rice ball x is located in the center. Then, while folding the rice packaging material 1 in half along the bottom of the rice ball x, cover the triangular surface of the rice ball x, fold the excess portion at the top, turn it around the back of the rice ball x, and seal it on top. Fix the folded edge by pasting something like this. This wrapping method is not particularly different from the conventional wrapping method for rice balls.

FIG. 6 is a perspective view showing an example of a food packaging material. The rice balls x are separated by an inner sheet 3 and wrapped in a seaweed sheet, and further wrapped in an outer sheet 2 from above. The cover sheet 9 appears on the triangular surface of the rice ball, passes through the bottom surface, and extends to the opposite triangular surface. The grip portion 10 at the upper end of the cover sheet 9 is located at the upper corner of the triangular surface.

I will explain how to open the packaged rice ball. First, pinch the grip portion of the cover sheet 9 with your fingers. Since the knob part 10 is not bonded to the outer sheet 2, it can be easily pinched. Pull this downward to peel off the cover sheet 9 from the outer sheet 2. The cover sheet 9 can be easily peeled off. Here, since the portion of the opening area 5 of the outer sheet 2 is adhered to the cover sheet 9, it is separated from the outer sheet 2 while being attached to the cover sheet 9 and cut along the opening line. After the cover sheet 9 is completely removed in this manner, the opening region 5 appears in an open state over both triangular surfaces and the bottom surface of the rice ball. Most of the outer sheet 2 is divided into left and right parts, but a connected part remains only near the upper corner of the rice ball. However, this can also be divided by pulling the remaining food packaging material 1 left and right. There is only a small amount of connection left, and since a notch 8 is provided from the center of the end unsealing line to the outside of the opening area, cracks will propagate from this notch 8 as a starting point, making it hard. Even if it is paper, the remaining parts can be easily separated. In this way, the outer sheet 2 and the inner sheet 3 connected thereto can be removed from the rice ball x. The seaweed sheet 4 remains on the rice ball x, and the rice ball wrapped in nori is obtained.

A second example of the packaging material for rice balls will be explained. FIG. 7 is a plan view showing a second example of a packaging material for rice balls, and FIG. 8 is a plan view showing a second example of an outer sheet. In this second example, the opening line 6 is a single line formed on the center line of the outer sheet. The cuts and connections may be formed by periodically repeating perforations, and the cuts may be longer to facilitate opening of the rigid paper sheet. Furthermore, the unsealing line 6 may be connected only at several connecting portions, or may be formed by cutting all of its sections. In this way, by forming the cutting line 6 into a single line, manufacturing can be facilitated.

The cover sheet 9 is pasted onto the opening line 6 from the outside surface of the outer sheet. The cover sheet 9 may be the same as the first example, but since it only covers one opening line 6, it may be thinner as shown in FIG. 7.

In this example, as in the first example, the opening line 6 is completely covered and sealed by the cover sheet 9 from the outside of the outer sheet. Therefore, even if a large cut is provided in the opening line 6, air will not enter or exit through the cut. Further, a cover sheet 9 provided on the outside protects the opening line 6. Even when the rice ball packaging material or the packaged rice ball is handled by hand, the fingers do not touch the opening line 6, and the situation where the package is torn even when the package is not intended to be opened is prevented.

Packaging using the rice ball packaging material in this example may be the same as in the first example. In the obtained packaged rice ball, the opening line and the cover sheet are located across the two triangular sides of the triangular rice ball and the bottom surface between them. When opening the package, the cover sheet 9 is peeled off from the outer sheet 2 by grasping the grip portion of the cover sheet 9 with your fingers and pulling it downward. After the cover sheet 9 is completely removed in this manner, tear lines appear across both triangular surfaces and the bottom surface of the rice ball. When the outer sheet 2 is pulled left and right, most of the outer sheet 2 is divided into left and right parts along the opening line 6. By pulling the remaining rice packaging material 1 left and right, it is completely separated, and the outer sheet 2 and the inner sheet 3 connected thereto can be removed from the rice ball x. The seaweed sheet 4 remains on the rice ball x, and the rice ball wrapped in nori is obtained.

1. Packaging material for rice balls 2. Outer sheet 3. Inner sheet 4. Seaweed sheet 5. Opening area6. Opening line 7. End opening line8. Notch part 9. Cover sheet 10. Knob section x. rice ball

Claims (4)

A roughly rectangular sheet, an opening area provided along the length in the center of the sheet, and an opening area provided to prevent air from entering or exiting through a cut section provided on the outside surface of the sheet. having a cover sheet for covering;
It has two parallel opening lines and an end opening line that connects the upper and lower ends of the two parallel opening lines, and the opening area is formed by the two parallel opening lines and the end opening line. A packaging material for rice balls that has a closed loop surrounding it. An approximately rectangular outer sheet that is a paper sheet, an inner sheet connected along the outer periphery of the outer sheet, a seaweed sheet stored between the outer sheet and the inner sheet, and a sheet of seaweed in the center of the outer sheet in the longitudinal direction. A packaging material for rice balls having an opening line having a cut section provided along the opening line, and a cover sheet covering the opening line to prevent air from entering and exiting through the cut section provided on the outer surface of the outer sheet. Two parallel opening lines having a cut section provided along the length direction in the center of the outer sheet, an opening area formed between the two parallel opening lines, and two parallel opening lines. It has an end opening line that connects the upper and lower ends of the opening line, and a cover sheet that covers the opening area to prevent air from entering and exiting through the cut section provided on the outer surface of the outer sheet. 3. The rice ball packaging material according to claim 2, wherein the two parallel opening lines and the end opening line form a closed loop surrounding the opening area. A rectangular outer sheet that is a paper sheet, an inner sheet connected along the outer periphery of the outer sheet, a seaweed sheet stored between the outer sheet and the inner sheet, and a sheet of seaweed placed in the center of the outer sheet in the length direction. Triangular rice balls are made using a packaging material for rice balls that has an opening line with a cut section provided along the opening line and a cover sheet that covers the opening line to prevent air from entering and exiting through the cut section provided on the outside surface of the outer sheet. It is a packaged rice ball, which is provided with an opening line and a cover sheet across the two triangular sides of the triangular rice ball and the bottom surface between them, and a knob portion that is not glued to the outer sheet is provided at one end of the cover sheet. , a wrapped rice ball in which the knob is located at the upper corner of the triangular surface.

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