Opening structure of rice ball packaging bag

Abstract

To solve the problem of a rice ball of a conventional laver sheet wrapping structure in which a stain prevention film held between packing sheets of the rice ball is shifted due to swinging or the like during conveyance, packing or opening work of the packing film, a form of wrapping the lower part of the rice ball at an accurate position after film opening is not realized, causing staining of a hand.SOLUTION: This opening structure for rice ball packing bag is configured such that in a wrapped rice ball comprising an exterior film which packs the entire rice ball and to which a cut tape for cutting near the center into two is stuck, an inner film formed by stacking together left and right film ends, and a laver sheet held between the films, and a rice ball body positioned outside the inner film and wrapped as a whole by the exterior film, a stain prevention film is provided between the exterior film and the laver sheet, and the longitudinal end of the stain prevention film is welded to the inner peripheral surface of the exterior film.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an opening structure for a rice ball packaging bag that enables a user to open the packaging of rice balls and eat them without getting his / her hands dirty. [Background technology]

[0002] Conventionally, various opening structures for rice ball packaging bags have been disclosed that enable a user to open the packaging of the rice balls and eat them without getting his / her hands dirty. For example, there is a configuration in which a stain-prevention film is placed between the film that wraps the outer surface of the rice ball and a divided film that wraps a seaweed sheet that has already been divided into left and right parts, along with the seaweed sheet, so that after removing the wrapping film and the divided film, the lower part of the rice ball wrapped in seaweed is sandwiched between both sides of the stain-prevention film before eating. There is also a configuration in which no special stain-prevention film is used, but the wrapping film is processed in advance so that part of the wrapping film wraps the seaweed rice ball when the wrapping film is opened (Patent Documents 1 and 2).

[0003] Both the onigiri stain-prevention film structure in which these stain-prevention films are interposed between packaging films, and the structure in which existing packaging films are used as stain-prevention films, are rooted in the ancient Japanese food culture of eating onigiri by directly gripping them with the hands without using tools such as chopsticks. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3067919 [Patent Document 2] JP 2020-023345 A DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0005] The most worrisome issue in this onigiri food culture that is so deeply rooted in Japanese culture is that the hands get dirty when the onigiri are made by hand. In particular, with film-wrapped onigiri wrapped in nori seaweed that are sold in large quantities at convenience stores these days, they are eaten in a variety of places, and therefore getting the hands dirty when eating them is considered an inevitable issue in onigiri food culture. In order to solve this problem, the above-mentioned stain-prevention film is used, and when eating, the stain-prevention film is wrapped over the wrapped seaweed sheet to prevent direct contact with the hands. However, in rice balls wrapped in such seaweed sheets, the stain-prevention film sandwiched between the rice ball's packaging sheets can shift due to shaking during transportation, packaging, or when the packaging film is opened, and the bottom of the rice ball may not be wrapped in the correct position after the film is opened, which can cause hands to get dirty.

[0006] This invention aims to provide an opening structure for a rice ball packaging bag in which, when packaging rice balls with a stain-prevention film interposed between the packaging films, the ends of the stain-prevention film are welded to the rice ball packaging film in advance, and when the packaging film is opened at the time of eating, only the welded parts of the ends of the stain-prevention film are removed together with the packaging film, so that the stain-prevention film does not shift between the packaging films even when the packaged rice ball is shaken, etc., and the triangular lower part of the rice ball can be accurately wrapped. [Means for solving the problem]

[0007] This invention relates to an opening structure for a rice ball packaging bag in a packaged rice ball consisting of an exterior film with a cutting tape affixed to it that wraps the entire rice ball and divides it in two from approximately the center, an inner film formed by overlapping the left and right film ends, a seaweed sheet sandwiched between the films, and a rice ball main body located outside the inner film and entirely wrapped in the exterior film, characterized in that a stain-prevention film is interposed between the exterior film and the seaweed sheet, and the longitudinal ends of the stain-prevention film are welded to the inner surface of the exterior film.

[0008] Another feature of the present invention is that a tear line is formed in the form of a cut line, a perforation or the like across the stain-preventive film near the welded portion of the stain-preventive film.

[0009] Another feature of the present invention is that one or both longitudinal ends of the stain-preventing film are fused to the inner surface of the exterior film.

[0010] Another feature of the present invention is that the welded end portion of the stain-preventive film in the longitudinal direction extends in the left-right direction.

[0011] Another feature of the present invention is that the welded end portion in the longitudinal direction of the stain-preventive film is the left half or the right half. Effect of the Invention

[0012] According to this invention, in a packaged rice ball, a stain-prevention film is interposed between the exterior film and the seaweed sheet, and one end, both ends, left and right entire edges, or the left half or right half of the stain-prevention film in the longitudinal direction are welded to the inner surface of the exterior film, and a cutting line is formed in the form of a score line, perforation, etc. that crosses the stain-prevention film near the welded portion of the stain-prevention film.This allows the stain-prevention film to be securely positioned inside the exterior film without shifting, and even when the packaging film is opened, the stain-prevention film can securely cover the bottom of the rice ball body, so that when eating the rice ball, the hands do not come into direct contact with the onigiri body and do not get dirty, and it also has the effect of providing hygiene protection against infectious diseases such as viruses.

[0013] Furthermore, if the outer film is cut and removed in the same procedure as for opening a conventional packaging film, the bottom of the onigiri body is automatically wrapped in a stain-prevention film from the surface of the seaweed sheet, so that the rice ball does not have to be directly grasped with the hands, thereby preventing hand dirt and infection from pathogens.

[0014] In addition, compared to the conventional structure in which the onigiri body is packaged with the seaweed sheet in direct contact with the exterior film, in the present invention a stain-prevention film is interposed between them, so that moisture penetrating through the exterior film does not directly affect the seaweed sheet, thereby preventing moisture from entering the seaweed.

[0015] In addition, the process of preparing the packaging film for packaging the rice ball itself does not require a special process for welding the stain-prevention film to the exterior film, and both films can be welded simultaneously in the welding process of the top and bottom ends of the exterior film in the unfolded state, which has the effect of making it easy to weld the stain-prevention film.

[0016] In addition, a cutting line in the form of a score line or perforation is formed near the welded portion of the stain-prevention film, crossing the stain-prevention film, so that simply by splitting and opening the integrally welded exterior film, the exterior film is automatically cut off as well, and the welded portion of the stain-prevention film does not interfere with opening the packaging film. [Brief description of the drawings]

[0017] [Figure 1] 1 is a plan view of an opening structure for an onigiri packaging bag according to a first embodiment of the present invention; [Diagram 2] 1A and 1B are explanatory diagrams showing the procedure for removing the packaging film of the rice ball packaging bag opening structure of the first embodiment of the present invention, in which (a) is a schematic diagram showing the state of cutting the outer film with a cutting tape, (b) is a schematic diagram showing the state of removing the right half of the packaging film, (c) is a schematic diagram showing the state of removing the left half of the packaging film, and (d) is a schematic diagram showing the state of the rice ball being held with the anti-stain film. [Diagram 3] 2 is a cross-sectional view taken along line AA in FIG. 1. [Figure 4] FIG. 2 is a plan view showing a stain-prevention film according to a first embodiment of the present invention, with cut lines provided thereon. [Diagram 5] 10 is a plan view of an opening structure for an onigiri packaging bag according to a second embodiment of the present invention. FIG. [Figure 6]13 is a plan view of an opening structure for an onigiri packaging bag according to a third embodiment of the present invention. FIG. [Figure 7] FIG. 11 is a plan view of an opening structure for an onigiri packaging bag according to a fourth embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] The gist of this invention is that in a packaged rice ball consisting of an exterior film which wraps the entire rice ball and has a cutting tape affixed to it which divides it in two from approximately the center, an inner film formed by overlapping the left and right film ends, a seaweed sheet sandwiched between the films, and a rice ball main body located on the outside of the inner film and entirely wrapped in the exterior film, a stain-prevention film is interposed between the exterior film and the seaweed sheet, one end or both ends, the entire left and right edges, or the left half or right half of the stain-prevention film in the longitudinal direction is welded to the inner surface of the exterior film, and a cutting line in the form of a score line, perforation, etc. is formed near the welded portion of the stain-prevention film, running across the stain-prevention film.

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described in detail with reference to the accompanying drawings. FIG. 1 is a plan view of an opening structure of a rice ball packaging bag according to the present invention, and FIG. d ) is a package FIG. 3 is an explanatory diagram showing the procedure for releasing the packaging; line A cross-sectional view is shown.

[0020] As shown in FIG. 1, the unfolded state of the packaging film 1 before packaging the rice ball R is made up of a rectangular exterior film 10 that packages the entire rice ball R, rectangular inner films 20, 20 that are formed by overlapping the left and right film ends on the inside of the exterior film 10 and divide the film into two from approximately the center, a small rectangular seaweed sheet 30 sandwiched between the two films, and a rectangular stain-prevention film 40 interposed between the exterior film 10 and the seaweed sheet 30. Moreover, a cutting tape 50 is attached to the exterior film 10 in the vertical direction at approximately the center thereof for cutting the exterior film 10 into two parts, left and right.

[0021] The exterior film 10 and the inner film 20 are welded together at both left and right side edges MR and ML, respectively, or at both longitudinal ends MU and MD, respectively, or are overlapped separately to form the packaging film 1.

[0022] In the present invention, in the developed structure of such a packaging bag, as shown in Fig. 1 or 3, a seaweed sheet 30 is sandwiched between the exterior film 10 and the inner film 20, and a stain-preventive film 40 is sandwiched outside the seaweed sheet 30. The stain-preventive film 40 may be any material that can be welded to the exterior film 10, and may be a plastic film or a paper material that has been treated to be weldable.

[0023] That is, in a packaged rice ball 100 consisting of a rice ball R positioned outside the inner film 20 and entirely packaged with the exterior film 10, a stain-preventing film 40 is interposed between the exterior film 10 and the seaweed sheet 30, and a longitudinal end of the stain-preventing film 40 is fixed by welding to a welding portion M on the inner peripheral surface of the exterior film 10. The welding state between the exterior film 10 and the stain-preventing film 40 at the welding portion M is weakly welded so that it can be easily unwound when the packaged rice ball 100 is opened. As a result, when the packaged rice ball 100 is opened, the exterior film 10 and the inner film 20 can be removed from the packaged form of the rice ball main body while the stain-preventing film 40 maintains the envelope form of the rice ball main body. In other words, when opening the packaged rice ball 100, the outer film 10 and the inner film 20 can be released from the welded state at the welded portion M while maintaining an integrated form at both left and right side end portions MR, ML, so that the rice ball body can be pulled out to the left and right while being enveloped by the stain-prevention film 40.

[0024] The following embodiments are possible for welding and fixing the longitudinal end of the stain-preventing film 40 to the inner peripheral surface of the exterior film 10.

[0025] That is, a first embodiment is a form in which the anti-stain film 40 has a welded portion M at both longitudinal ends thereof as shown in FIG. 1 or FIG. 4; a second embodiment is a form in which the anti-stain film 40 has a welded portion M at one longitudinal end thereof as shown in FIG. 5; a third embodiment is a form in which the anti-stain film 40 has welded portions M, M at all left and right edges thereof as shown in FIG. 6; a fourth embodiment is a form in which the anti-stain film 40 has a welded portion M in the left or right half thereof as shown in FIG. 7, etc.

[0026] In all of the above embodiments, the stain-prevention film 40 is sandwiched and welded to the inside of the packaging film 1, and when the rice ball R is actually packaged and the triangular packaging form is completed, this sandwiched and welded portion will be integrally welded to any part of the exterior film 10. As a result, no matter how much the wrapped rice ball body is shaken, the stain-preventing film 40 will come off from the specified position of the exterior film 10, eliminating the risk of impairing the stain-preventing function.

[0027] 2(c) and 4 to 7, the stain-prevention film 40 may have a cut line 41 formed in the form of a cut line, perforation, or the like across the stain-prevention film 40 at approximately one-third of the height from the top of the rice ball body when the rice ball body is wrapped. The reason for forming such a cut line 41 is as follows.

[0028] When the stain-prevention film 40 is strongly welded to the exterior film 10 at the end so that the welded state of the welded portion M does not easily come undone in order to prevent inadvertent movement, even if the exterior film 10 of the triangular packaged rice ball 100 is opened from the left and right together with the inner film 20, the stain-prevention film 40 will not be separated from the center to the left and right, which will hinder the work of separating the exterior film 10 and the inner film 20.

[0029] Therefore, as shown in Figure 4 or Figure 5, when dividing the exterior film 10 etc. from the center by forming a transverse cutting line 41, the upper part of the anti-stain film 40 is cut along the cutting line 41, and the cut upper part is released and removed together with the exterior film 10. In the third and fourth embodiments shown in FIG. 6 in which the left and right edges of the stain-preventive film 40 are welded, or in FIG. 7 in which either half of the left or right edge of the stain-preventive film 40 is welded, the cutting line 41 is formed into a substantially rectangular or U-shaped shape, so that the separation operation of the exterior film 10 and the inner film 20 can be carried out smoothly.

[0030] The operation of cutting the upper portion of the stain-preventing film 40 and releasing and removing the cut upper portion together with the exterior film 10 will be described with reference to FIGS. d 2, the exterior film 10 is first cut into left and right halves by a cutting tape 50 in the center of the exterior film 10, and then pulled to the left and right together with the partially overlapping inner film 20 to open the packaging film 1 to the left and right.

[0031] At this time, the upper part of the stain-prevention film 40 is cut off along a horizontal cutting line 41 formed on the overlapping upper part of the stain-prevention film 40 .

[0032] The welded portion at the top of the cut-off stain-prevention film 40 is cut off integrally with one half of the exterior film 10, so that the outer surface of the laver sheet 30 wrapping the lower base of the rice ball body is wrapped with the stain-prevention film 40, and even if the rice ball R is held by hand, there is no risk of the hand getting dirty because of the presence of the stain-prevention film 40.

[0033] The present invention is not limited to the above-described embodiment, but includes configurations in which the configurations disclosed in the above-described embodiment are mutually substituted or the combination is changed, known inventions, and configurations in which the configurations disclosed in the above-described embodiment are mutually substituted or the combination is changed, etc. In addition, the technical scope of the present invention is not limited to the above-described embodiment, but extends to the matters described in the claims and their equivalents. [Explanation of symbols]

[0034] 1 Packaging film 10 Exterior film 20 Inner film 30 Seaweed Sheets 40 Anti-stain film 41 Cut Line 50 Cut Tape 100 wrapped rice balls R Onigiri M Welded part MU upper end MD lower end MR right end ML left end

Claims

[Claim 1] An exterior film that encases the entire rice ball and has a cutting tape attached to it that divides the rice ball into two parts approximately in the center; An inner film formed by overlapping the left and right film ends; a seaweed sheet sandwiched between the exterior film and the inner film; a rice ball body located outside the inner film and entirely wrapped with the exterior film, the exterior film and the inner film are welded to each other at both left and right end portions having protrusions protruding in the left and right direction from both left and right edges in a direction approaching each other, a stain-preventing film is interposed between the exterior film and the seaweed sheet, the length of the stain-preventing film being in the same direction as that of the exterior film; The stain-preventive film has a U-shape with one side open and a cut line formed in the form of a cut line or a perforation, An opening structure for a rice ball packaging bag, characterized in that the vicinity of the edge of the stain-prevention film on the other left or right side of the C-shaped cutting line is continuously welded to the exterior film along the longitudinal direction from one end to the other end in the longitudinal direction.

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