JP2022119674A - Packaging material for rice ball and packaged rice ball - Google Patents

Abstract

To provide a packaging material for a rice ball and a packaged rice ball capable of easily opening by reducing the used amount of plastics.SOLUTION: A packaging material 1 for a rice ball includes: an outer sheet 2 being an approximately rectangular paper sheet; an inner sheet 3 being a paper sheet connected along an outer periphery of the outer sheet; a laver sheet 4 stored between the outer sheet 2 and the inner sheet 3; an opening line 6 provided at a center part of the outer sheet 2 along a length direction; a cover sheet 10 covering the opening line 6 provided on an outer surface of the outer sheet 2; and a low adhesive layer 3c provided on an outer surface of the inner sheet 3.SELECTED DRAWING: Figure 4

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 laver sheet is contained between an outer sheet and an inner sheet so that the sheet of laver does not come into contact with the rice balls when the rice balls are wrapped. . The two inner sheets are provided so that the edges overlap along the center line, and the overlap is either not glued or has a weak connection that is easily separated. On the other hand, the outer sheet is provided with an opening assistance line such as a cut tape along the center line so that the outer sheet can be cut left and right at the time of opening. For example, Patent Literature 1 and Patent Literature 2, etc. describe a rice ball wrapping film, in which an opening assisting tape is attached to a rectangular film body, and a disk-shaped rice ball is wrapped with this rice ball wrapping film. . When eating, the bag is opened with this opening assisting tape. In addition to this, plastic film is used as the material for packaging materials for rice balls that have been put into practical use.

Patent Document 3 describes a packaging material for nigiri rice, in which an outer film 1 is provided with a surface layer portion made of paper or nonwoven fabric. Patent Documents 4 and 5 describe rice ball packaging materials using glassine paper. In Patent Document 6, a substantially 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 the outer sheet Two parallel opening lines provided along the length direction in the central part, an opening area formed between the two parallel opening lines, and an opening provided on the outer surface of the outer sheet A rice ball wrapper is described that has a cover sheet covering the serving area.

Patent Document 6 discloses a substantially rectangular outer sheet that is a grip sheet, an inner sheet connected along the outer periphery of the outer sheet, a seaweed sheet accommodated between the outer sheet and the inner sheet, and the outer sheet. Two parallel opening lines provided along the length direction at the center of the, an opening area formed between the two parallel opening lines, and an opening provided on the outer surface of the outer sheet A rice wrapper is described that has a cover sheet covering an opening area.

Design Registration No. 1203540 Design Registration No. 1204011 JP 2004-26535 JP 2000-62835 JP 2000-279113 JP 2020-128228

All conventional packaging materials for rice balls consisted of plastic films. However, plastic containers must be disposed of separately from combustibles after use. In addition, uncollected plastic flows out into the environment, becoming one of the causative substances of marine pollution, and adverse effects on ecosystems have also become a problem. Therefore, a rice ball packaging material 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 made of paper or non-woven fabric, the base of the outer film is made of synthetic resin, and only the surface layer is made of paper or non-woven fabric. Therefore, the amount of plastic used has not decreased, and waste has increased by the amount of the surface layer of paper or non-woven fabric.

The rice ball packaging materials of Patent Documents 4 and 5 use glassine paper for the exterior sheet. However, paper is harder than plastic film and is difficult to cut because it has no orientation. In Patent Documents 4 and 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 wrapping material for rice balls, but if stronger paper is used, opening becomes more difficult.

The packaging material for rice balls of Patent Document 6 also uses a plastic film for the inner sheet.

In addition, on the surface of the inner sheet that comes into contact with the rice ball, when the rice ball is wrapped, the rice ball sticks strongly due to the stickiness of the cooked rice. Therefore, it may become difficult to carry out the packaging operation, and the inner sheet is less likely to slide on the rice ball when the package is opened, making it difficult to pull out the inner sheet between the seaweed and the rice ball.
SUMMARY OF THE INVENTION An object of the present invention is to provide a rice ball packaging material and a packaged rice ball that use less plastic and are easy to open.

In order to solve the above-mentioned problems, the packaging material for rice balls of the present invention comprises an outer sheet which is a substantially rectangular paper sheet, an inner sheet which is a paper sheet connected along the outer periphery of the outer sheet, and an outer sheet. It has a seaweed sheet stored between the inner sheets, an opening line provided in the center of the outer sheet along the length direction, and a cover sheet covering the opening line provided on the outer surface of the outer sheet. The outer surface of the inner sheet is provided with a low-tackiness layer to which cooked rice not wrapped with seaweed is less likely to adhere. Preferably, the polylaminate layer on the outer surface of the inner sheet and the siliconized layer on the polylaminate layer form the low tack layer. In addition, it is preferable to have an opening line provided along the length direction at the center of the outer sheet and a cover sheet covering the opening line provided on the outer surface of the outer sheet.

In addition, the packaged rice ball of the present invention includes an outer sheet that is a substantially rectangular paper sheet, an inner sheet that is a paper sheet that is connected along the outer periphery of the outer sheet, and is housed between the outer sheet and the inner sheet. A seaweed sheet, an opening line provided in the center of the outer sheet along the length direction, a cover sheet covering the opening line provided on the outer surface of the outer sheet, and a cover sheet provided on the outer surface of the outer sheet. A packaged rice ball in which a triangular rice ball is wrapped in a rice ball packaging material having a low-adhesive layer having a polylaminate layer and a siliconized layer provided on the polylaminate layer, the two triangular sides of the triangular rice ball and A tear line and cover sheet are provided across the bottom surface therebetween.

In this invention, paper sheets are used instead of plastic for both the outer and inner sheets, so that the amount of plastic used can be greatly reduced and the environmental impact can be reduced. Since the low-tackiness layer is provided on the outer surface of the inner sheet, when the rice ball is wrapped, the inner sheet is less likely to stick to the rice ball and can be easily opened.

Fig. 2 is a plan view showing an example of a rice ball packaging material; It is the same rear view. It is the same AA sectional view. FIG. 3 is an enlarged cross-sectional view of the same part; FIG. 4 is a plan view showing an example of an outer sheet; Fig. 3 is a perspective view showing a state in which a rice ball is placed on a rice ball packaging material. It is a perspective view showing a packaged rice ball. Fig. 10 is a plan view showing a second example of the packaging material for rice balls; FIG. 10 is a plan view showing a second example of the outer sheet;

A mode for carrying out the present invention will be described with reference to the drawings. 1 is a plan view showing a first example of the packaging material for rice balls, FIG. 2 is a plan view of the same, and FIG. 3 is a cross-sectional view of the same along the line AA. A rice ball packaging material 1 has a substantially rectangular outer sheet 2, an inner sheet 3 connected along the outer periphery of the outer sheet 2, and a seaweed sheet 4 housed between the outer sheet and the inner sheet.

The outer sheet 2 will be explained. FIG. 5 is a plan view showing the outer sheet. The outer sheet 2 is generally rectangular. It does not have to be perfectly rectangular, and for example, notches may be provided at the four corners so that the four corners are less folded when the rice ball is 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 wrap food and has sufficient strength. Moreover, in order to obtain a certain degree of waterproofness and smoothness of the surface, 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. - 特許庁In this example, two parallel unsealing lines 6 are provided at a predetermined distance along the center line, and the area sandwiched between them is the unsealing area 5 . Furthermore, as the opening lines forming the opening area 5, in addition to the two parallel opening lines 6, edge opening lines 7 connecting the upper ends and the lower ends are provided. The parallel opening line 6 and the edge opening line 7 form a closed loop surrounding the opening area 5 . A notch 8 extending from the center of each end opening line 7 to the outside of the opening area 5 is also provided. Here, the opening line is a line that has been processed to facilitate cutting, and is provided with perforations in which the cut portion and the connection 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 seat 3 will be explained. The inner sheet 3 has a substantially elongated shape having the same outer shape as the outer sheet 2, and uses a paper sheet as a base material. As with the outer sheet 2, there is no particular limitation as long as the food packaging material is a highly safe paper sheet. It is designed to separate easily left and right along the center line. In this example, the left and right sides are two separate substantially rectangular sheets, which are overlapped at the center. This overlap may be weakly glued, but is not connected in this example.

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

FIG. 4 is a partially enlarged sectional view. Here, a low-tackiness layer 3c is formed on the outer surface of the inner sheet 3, that is, the surface opposite to the surface facing the outer sheet 2 and the seaweed sheet 4. As shown in FIG. When the rice ball is wrapped, this surface comes into contact with the surface of the rice ball. This low-tackiness layer 3c is a layer that prevents the cooked rice from adhering to the rice ball x to be packaged, so that it is difficult for the rice to stick to it even if it comes into contact with the layer 3c. For example, it is preferable to provide a polylaminate layer on a paper sheet as a substrate, and further form a siliconized layer thereon. By providing the polylaminate layer, the water resistance of the inner sheet 3 can be improved, and silicon can form a good film on the surface without being absorbed into the inside of the paper sheet. In this way, the sticky rice ball is prevented from adhering to the surface of the inner sheet 3, and the rice ball can smoothly move on the outer surface of the inner sheet 3.例文帳に追加

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 sealing property, and is easily peeled off when the package is opened. However, the amount of plastic used may be reduced by using a paper sheet. A knob portion 10 is provided at one end of the cover sheet 9 . The outer sheet 2 and the cover sheet 9 are connected to each other so as to have a high sealing property, to be difficult to peel off when packaged, and to be easily peeled off when unsealed. For example, the cover sheet 9 can be connected by applying a pressure-sensitive adhesive such as polyester-based, acrylic-based, or rubber-based adhesive to the cover sheet 9 except for the tab portion 10 . In particular, it is preferable that the outer side of the unsealing area 5 is coated with a smooth surface to provide an adhesiveness reducing treatment area so that the adhesion is weaker than the inner side of the unsealing area 5 .

Next, an example of a packaged rice ball wrapped with the above packaging material for rice ball will be described. FIG. 6 is a perspective view showing a state in which a rice ball is placed on a packaging material for rice. The rice packaging material 1 is placed with the side with the inner sheet 3 facing up. This surface is the surface on which the low-tackiness layer is formed by silicon treatment. Place the bottom of the triangular rice ball x in the center. Then, while folding the rice packaging material 1 in two along the bottom surface of the rice ball x, the triangular surface of the rice ball x is covered, and the surplus portion at the top is folded and turned to the back of the rice ball x, and a seal is placed thereon. etc. to fix the folded ends. This wrapping method may be the same as the conventional wrapping method for rice balls. The low-adhesion layer on the outer surface of the inner sheet 3 makes it difficult for rice grains to adhere, and the packaging operation is easy.

FIG. 7 is a perspective view showing an example of a rice packaging material. The rice ball x is wrapped with a seaweed sheet while being separated by the inner sheet 3, and further wrapped with 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. A grip portion 10 at the upper end of the cover sheet 9 is positioned at the upper corner of the triangular plane. Also, the low-tackiness layer of the lower sheet 3 is in contact with the surface of the rice ball.

The opening of the packaged rice ball will be explained. First, the grip portion of the cover sheet 9 is pinched with fingers. Since the grip portion 10 is not adhered to the outer sheet 2, it can be easily gripped. 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 opening area 5 of the outer sheet 2 is adhered to the cover sheet 9, it is pulled away from the outer sheet 2 while adhering to the cover sheet 9 and separated along the opening line. After all the cover sheets 9 have been removed in this way, the opening areas 5 appear in an open state over both triangular and bottom surfaces of the rice ball. Most of the outer sheet 2 is divided into right and left parts, but only the portion connected to the vicinity of the upper corner of the rice ball remains. However, this can also be divided by pulling the remaining rice packaging material 1 left and right. The remaining connecting portion is very small, and since the notch 8 is provided from the center of the edge opening line toward the outside of the opening area, the crack progresses from this notch 8 and becomes hard. Even if it is paper, the remaining part can be easily divided. In this way, the outer sheet 2 and the inner sheet 3 connected thereto can be pulled left and right to be removed from the rice ball x. Since the lower sheet 3 is in contact with the rice ball by the low-adhesive layer, the lower sheet 3 is slid on the rice ball and pulled out with almost no resistance. The seaweed sheet 4 remains on the rice ball x, and the rice ball wrapped in the seaweed is obtained.

A second example of the packaging material for rice balls will be described. FIG. 8 is a plan view showing a second example of the packaging material for rice balls, and FIG. 9 is a plan view showing a second example of the outer sheet. In this second example, the tear line 6 is a single line formed on the centerline of the outer sheet. The cuts and connections may also be formed by periodically repeating perforations, and the cuts may be longer to facilitate opening of stiff paper sheets. Furthermore, the unsealing line 6 may be connected only at several connecting portions, or all of the sections may be formed in a cut state. Thus, by forming the cutting line 6 into a single line, manufacturing can be facilitated.

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

Also 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 the unsealing line 6 is provided with a large cut portion, air does not enter or exit through the cut portion. Also, the cover sheet 9 provided on the outside protects the opening line 6. - 特許庁Even if the wrapping material for rice balls or the wrapped rice balls is handled by hand, the finger does not touch the opening line 6, and the situation of tearing without intending to open the package is prevented.

The packaging using the rice ball packaging material in this example may be the same as in the first example. In the resulting packaged rice ball, the opening line and cover sheet are located across the two triangular sides of the triangular rice ball and the bottom surface therebetween. At the time of opening, the cover sheet 9 is peeled off from the outer sheet 2 by pinching the grip portion of the cover sheet 9 with fingers and pulling downward. After all the cover sheets 9 have been removed in this way, an opening line appears across both triangular and bottom surfaces of the rice ball. When the outer sheet 2 is pulled left and right, most of the outer sheet 2 is divided left and right along the opening line 6.例文帳に追加By pulling the remaining rice packaging material 1 left and right, 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 the seaweed is obtained.

1. Packaging material for rice balls2. outer sheet 3 . Inner seat 3a. low tack layer4. seaweed sheet5. 6. Opening area. Unsealing line7. 8. Edge opening line. notch 9 . cover sheet 10 . knob x. rice ball

Claims (4)

An outer sheet that is a substantially rectangular paper sheet, an inner sheet that is a paper 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 the center of the outer sheet A rice ball having an opening line provided along the length direction, a cover sheet covering the opening line provided on the outer surface of the outer sheet, and a low-tackiness layer provided on the outer surface of the inner sheet packaging material. 2. The packaging material for rice balls according to claim 1, wherein the polylaminate layer provided on the outer surface of the inner sheet and the siliconized layer provided on the polylaminate layer form a low-tackiness layer. 3. The package for rice balls according to claim 1 or claim 2, which has an opening line provided along the length direction at the center of the outer sheet and a cover sheet covering the opening line provided on the outer surface of the outer sheet. material. An outer sheet that is a substantially rectangular paper sheet, an inner sheet that is a paper 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 the center of the outer sheet an opening line provided along the length of the outer sheet, a cover sheet covering the opening line provided on the outer surface of the outer sheet, and a polylaminate layer provided on the outer surface of the outer sheet and a polylaminate layer. A packaged rice ball in which a triangular rice ball is wrapped in a rice ball wrapping material having a low-tack layer having a siliconized layer disposed thereon, an opening line and a A wrapped rice ball provided with a cover sheet.

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