JP2020128228A - Packaging material for rice ball and packed rice ball - Google Patents

Abstract

To provide a packaging material for rice ball and a packed rice ball that reduce a use amount of plastic and are easy to open.SOLUTION: A packaging material for rice ball 1 of the present invention includes a substantially rectangular outer sheet 2 which is a paper sheet, an inner sheet 3 connected along an outer periphery of the outer sheet 2, a dried laver sheet 4 stored between the outer sheet 2 and the inner sheet 3, two parallel opening lines 6 provided along a length direction at a center part of the outer sheet 2, an opening area 5 formed between the two parallel opening lines 6, and a cover sheet 9 covering an opening area 2 provided on a surface outside the outer sheet 2.SELECTED DRAWING: Figure 1

Description

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

A widely used packaging material for rice balls is to store the nori sheet between the outer sheet and the inner sheet to prevent the nori sheet from contacting the rice balls when packaging the rice balls. .. The two inner sheets are provided so that the edges thereof overlap with each other along the center line, and the overlapping portions are not bonded or have a weak connection so that they can be easily separated. On the other hand, the outer sheet is provided with an unsealing auxiliary line such as a cut tape along the center line, so that the outer sheet can be cut left and right when unsealing. For example, Patent Documents 1 and 2 and the like describe an outer packaging film for rice balls, an opening assist tape is attached to a rectangular film body, and a disc-shaped rice ball is packaged with this outer packaging film for rice balls. .. When eating, open with this opening aid tape. In addition to this, the packaging materials for rice balls that have been put into practical use are made of plastic films.

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

Design Registration No. 1203540 Design Registration No. 1204011 JP 2004-26535A Japanese Patent Laid-Open No. 2000-62835 JP-A-2000-279113

The conventional packaging materials for rice balls were all made of plastic film. However, plastic containers must be disposed of separately from combustible materials after use. In addition, uncollected plastics flow into the environment and are one of the causative substances of marine pollution, and the adverse effect on the ecosystem is becoming a problem. Therefore, a packing material for rice balls that uses less plastic is desired.

The food packaging material of Patent Document 3 uses Japanese paper as the outer film. However, not all of the outer film is paper or non-woven fabric, the outer film base is made of synthetic resin, and only the surface layer part is paper or non-woven fabric. Therefore, the amount of plastic used has not decreased, and the amount of waste has increased by the amount of the surface layer of paper or nonwoven fabric.

In the packaging materials for rice balls of Patent Document 4 and Patent Document 5, glassine paper is used for the exterior sheet. However, paper is harder to cut than plastic film because it is harder and has no directivity. In Patent Document 4 and Patent Document 5, a cut tape or a cut thread is provided in the central portion of the exterior sheet, but with this, it is difficult to cut the paper unless considerable force is applied. Glassine paper is not strong enough as a packaging material for rice balls, but it is more difficult to open it if a stronger paper is used.

It is an object of the present invention to provide a packaging material for hand-held rice and a hand-wrapped hand-held rice that reduce the amount of plastic used and are easy to open.

In order to solve the above-mentioned problems, a packaging material for rice balls according to 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 an outer sheet and an inner sheet. The seaweed sheet housed in the outer sheet, the opening line provided along the length direction at the center of the outer sheet, and the cover sheet covering the opening line provided on the outer surface of the outer sheet. Two parallel unsealing lines provided along the length direction at the center of the outer sheet and an unsealing region formed between the two parallel unsealing lines may be formed. In addition to the two parallel opening lines, an end opening line connecting the upper end portions and the lower end portions thereof and a cut portion provided from the central portion of each end opening line to the outside of the opening area are provided. be able to.

In addition, the packaged rice according to the present invention comprises a rectangular outer sheet which is a paper sheet, an inner sheet connected along the outer periphery of the outer sheet, a seaweed sheet housed between the outer sheet and the inner sheet, and an outer sheet. Triangular rice is wrapped with a packing material for rice balls that has an opening line provided along the lengthwise direction in the center of the sheet and a cover sheet that covers the opening line provided on the outer surface of the outer sheet. An opening line and a cover sheet are provided across the two triangular surfaces of the rice ball and the bottom surface between them.

In the present invention, a paper sheet is used as the outer sheet instead of plastic, so that the amount of plastic used can be significantly reduced and the environmental impact can be reduced. An opening line and a cover sheet are provided over the two triangular surfaces of the triangular rice ball and the bottom surface between them, and the outer sheet can be easily divided into left and right when opening.

It is a top view which shows the 1st example of the packaging material for rice balls. It is the same rear view. It is the same AA sectional view. It is a top view which shows the 1st example of an outer sheet. It is a perspective view showing the state where rice balls were placed on the rice packing material. It is a perspective view showing a packaged rice. 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.

An embodiment for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing a first example of a packing 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 is 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 laver sheet 4 stored between the outer sheet and the inner sheet. Have and.

The outer sheet 2 will be described. FIG. 4 is a plan view showing the outer sheet. The outer sheet 2 has a substantially rectangular shape. It is not necessary to have a completely rectangular shape, and for example, notches may be provided at the four corners so that the folds at the four corners are small when the rice balls are wrapped. And in this invention, the outer sheet 2 is a paper sheet. The paper sheet is not particularly limited as long as it can safely pack food and has sufficient strength. In addition, in order to obtain a certain level of waterproofness and surface smoothness, it is preferable to apply a surface treatment such as plastic coating on both sides.

An opening line 6 is provided along the center line of the outer sheet 2. In this example, two parallel unsealing lines 6 are provided at a predetermined distance along the center line, and the region sandwiched between these is the unsealing region 5. Further, as the unsealing line forming the unsealing area 5, in addition to the two parallel unsealing lines 6, an end unsealing line 7 connecting the upper end portions and the lower end portions thereof is provided. The parallel opening line 6 and the end opening line 7 form a closed loop surrounding the opening area 5. Further, a cut portion 8 provided from the central portion of each end opening wire 7 to the outside of the opening area 5 is also provided. Here, the unsealing line is a line that has been subjected to processing for facilitating cutting, and here, perforations in which the cutting portion and the connecting portion are periodically repeated are provided. In addition, as will be described later in another example, a line that is cut over a long distance is also included.

Next, the inner sheet 3 will be described. 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 easy to separate right and left along the center line. In this example, the left and right sides are separate two substantially rectangular sheets, and they overlap each other at the center. This overlapping part may be weakly bonded, but 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 be connected at the edge portions along the upper and lower sides, which are connected in this example. Then, between the outer sheet 2 and the inner sheet 3, a rectangular seaweed sheet 4 for wrapping rice balls is put.

A cover sheet 9 that covers the opening area 5 is provided on the opening area 5 on the outer surface of the outer sheet 2. The cover sheet 9 may be a plastic sheet that is easily adhered, has a hermeticity, and is easily peeled off when it is opened. However, the amount of plastic used may be reduced by using a paper sheet. A knob 10 is provided at one end of the cover sheet 9. The outer sheet 2 and the cover sheet 9 have a high hermeticity, are hard to peel off during packaging, and are connected so that they can be easily peeled off when opened. For example, the cover sheet 9 may be coated with a pressure-sensitive adhesive such as a polyester-based, acrylic-based, or rubber-based adhesive excluding the knob portion 10, and the connection may be performed by this. In particular, it is preferable to provide a coating for smoothing the surface on the outside of the unsealing area 5 to provide an adhesion-reducing treatment area so that the adhesion is weaker than the inside of the unsealing area 5.

Next, an example of the wrapped rice ball wrapped with the above-mentioned packaging material for rice balls will be described. FIG. 5 is a perspective view showing a state in which hand-held rice is placed on the rice wrapping material. The rice wrapping material 1 is placed with the side having the inner sheet 3 facing upward, and is placed so that the bottom surface of the triangular rice ball x is located at the center. Then, while folding the rice packing material 1 along the bottom surface of the rice ball x in half, cover the triangular surface of the rice ball x, fold the excess part of the upper part and turn it over the back surface of the rice ball x, and seal on it. Etc., and fix the folding end. This wrapping method is not particularly different from the conventional method of wrapping rice balls.

FIG. 6 is a perspective view showing an example of a rice packaging material. The sushi rice x is wrapped in a seaweed sheet in a state of being separated by the inner sheet 3, and is further wrapped in the 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 knob 10 at the upper end of the cover sheet 9 is located at the upper corner of the triangular surface.

The opening of packaged rice will be described. First, the cover sheet 9 is pinched with a finger. Since the knob portion 10 is not adhered to the outer sheet 2, it can be easily grasped. The cover sheet 9 is peeled off from the outer sheet 2 by pulling it downward. The cover sheet 9 can be easily peeled off. Here, since the portion of the unsealing 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 separated along the unsealing line. After the cover sheet 9 is completely removed in this way, the opening area 5 appears in an open state over both triangular surfaces and the bottom surface of the rice ball. Almost all of the outer sheet 2 is divided into left and right parts, but a part connected only near the upper corner of the rice ball remains. However, this can also be divided by pulling the remaining rice wrapping material 1 left and right. The number of remaining connecting portions is small, and since the cut portion 8 is provided from the central portion of the end opening line toward the outside of the opening region, the crack progresses from this cut portion 8 as a starting point and is hard. The rest can be easily separated even with paper. In this way, the outer sheet 2 and the inner sheet 3 connected thereto can be removed from the gripped rice x. The seaweed sheet 4 remains on the rice ball x, and the rice ball wrapped with seaweed is obtained.

A second example of the packing material for rice balls will be described. FIG. 7 is a plan view showing a second example of the packing material for rice balls, and FIG. 8 is a plan view showing a second example of the outer sheet. In this second example, the opening line 6 is a single line formed on the center line of the outer sheet. The cutting portion and the connecting portion may be formed by perforations that are periodically repeated, and the cutting portion may be lengthened so as to facilitate the opening of the hard paper sheet. Furthermore, the unsealing line 6 may be connected only at several connecting portions, or all the sections may be formed in a cut state. Thus, by making the cutting line 6 into one line, manufacturing can be facilitated.

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

Also in this example, as in the first example, the opening line 6 is completely covered with the cover sheet 9 from the outer side of the outer sheet and sealed. Therefore, even if the opening line 6 is provided with a large cut portion, air does not enter and exit through the cut portion. The cover sheet 9 provided on the outer side protects the opening line 6. Even if the packaging material for rice balls and the packaged rice balls are handled by hand, the fingers do not touch the opening line 6 and the situation of tearing without being intended to open is prevented.

The packaging with the packaging material for rice balls in this example may be the same as in the first example. In the obtained packaged rice, the opening line and the cover sheet are located over the two triangular surfaces of the triangular rice and the bottom surface between them. At the time of unpacking, the knob portion of the cover sheet 9 is pinched with a finger and pulled downward to peel the cover sheet 9 from the outer sheet 2. After all the cover sheets 9 have been removed in this way, an opening line appears over both triangular surfaces and the bottom surface of the rice ball. If the outer sheet 2 is pulled left and right, most of the outer sheet 2 is divided right and left along the opening line 6. The remaining packaging material 1 for rice is completely divided by pulling it left and right, and the outer sheet 2 and the inner sheet 3 connected thereto can be removed from the gripped rice x. The seaweed sheet 4 remains on the rice ball x, and the rice ball wrapped with seaweed is obtained.

1. Packaging material for rice balls 2. Outer sheet 3. Inner sheet 4. Nori sheet 5. Area for opening 6. Unsealing line 7. End opening line 8. Notch 9. Cover sheet 10. Knob part x. rice ball

Claims (4)

A substantially rectangular outer sheet that is a paper sheet, an inner sheet that is connected along the outer periphery of the outer sheet, a seaweed sheet that is stored between the outer sheet and the inner sheet, and a longitudinal direction at the center of the outer sheet. A packaging material for rice balls, which has an opening line provided along the opening line and a cover sheet that covers the opening line provided on the outer surface of the outer sheet. Two parallel unsealing lines provided along the length direction at the center of the outer sheet, an unsealing area formed between the two parallel unsealing lines, and an outer surface of the outer sheet. The packaging material for rice balls according to claim 1, further comprising a cover sheet that covers the opened area for opening. The end opening line connecting the upper end portions and the lower end portions of two parallel opening lines, and a cut portion provided from the central portion of each end opening line to the outside of the opening region. Packing material for rice as described. A rectangular outer sheet that is a paper sheet, an inner sheet that is connected along the outer periphery of the outer sheet, a seaweed sheet that is stored between the outer sheet and the inner sheet, and a lengthwise direction at the center of the outer sheet. A packaged rice for wrapping a triangular rice ball with a packaging material for rice balls that has an opening line provided along the opening line and a cover sheet that covers the opening line provided on the outer surface of the outer sheet, and two triangular surfaces of the triangular rice ball and Wrapped rice in which the opening line and the cover sheet are provided across the bottom surface between them.

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