JPH09165064A - Rice ball-packing material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice ball-packing material with which a packing of a rice ball can be opened easily by one-touch handling and outside air is prevented from entering an inside of a housing part of a sheet-like laver. SOLUTION: In a rice ball-gacking material 1, a rectangular inner film 2 and an outer film 3 are provided, its peripheral edge is fused with heat so as to form a housing section 6 of a sheet-like laver 5 in between the films 2 and 3. The inner film 2 is formed of two inner film pieces 2a which are superposed one another separably at almost the central part. The outer film 3 is formed of two outer film pieces 3a which are superposed one another separably at almost the central part. A superposing width L at a superposed part 3A of the outer film pieces 3a is formed to be larger than a superposing width l at a superposed part 2A of the inner film pieces 2a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice ball packaging material in which sheet-like seaweed is stored separately from rice balls.

[0002]

2. Description of the Related Art Conventionally, the most common rice ball packaging material as described above has the following construction (see FIGS. 11 and 12). (B) A rectangular inner film a and an outer film b are provided, and the peripheral edge thereof is heat-welded c to form a storage portion e for the sheet-like seaweed d between the films a and b.

(B) The inner film a is divided into two inner film pieces a'and a ', and both film pieces a and a'
Are superposed on each other at approximately the center.

The outer film b is composed of one film, and the cut tape f is arranged along the overlapping portion of the inner film a at the center thereof.

In order to wrap a rice ball using the packing material I having the above structure, a triangular rice ball g is placed above the center of the inner film a, and the inner film a and the outer film b are lowered along the bottom of the rice ball g. From the top to the top in a U-shape, and then fold both upper corners inward (on the inner film a side) along both sides of the rice ball g. It is fixed by h.

To open the packaging material I when eating, the one end f'of the cut tape f is picked up and pulled, and the outer film b is separated left and right at the center. Since the inner films a'and a'are separated only by being polymerized at the center, both the inner and outer films a and b are completely divided at the center.

Therefore, if one corner edge below the inner and outer films a and b is picked and pulled in the lateral direction, the picked film is peeled from the rice ball g and the sheet-like seaweed d, and the sheet-like seaweed d is formed. Wrap around rice ball g. Then, when the corner edge of the other film is picked and pulled, the remaining film is peeled off, and the remaining sheet-like seaweed is wrapped around the rice ball g. In this way, fresh sheet-shaped seaweed d
Is wrapped directly around the rice ball g.

[0008]

However, the conventional packaging material as described above has various problems as described below in handling and manufacturing process. 1) In order to open the bag, it is necessary to pick and pull one end of the cut tape f and pull the cut film f to divide the outer film b into two parts.

2) At that time, since the seal piece h for fixing the film is attached to the upper surface of the cut tape f, it is difficult to pull out the cut tape f, and a strong force is required.

3) Cut tape f for the outer film b
The mounting process complicates the packaging material manufacturing process, increases equipment costs, and increases product costs.

The present invention has been made in view of the above problems of the prior art. The outer film is composed of two outer film pieces which are superposed in the central portion in the same manner as the inner film. By forming the overlapping width of the overlapped portion to be larger than the overlap width of the overlapped portion of the inner film, the outside air is prevented from entering from the overlapped portion in the center of the outer film, and the opening tape is cut off from the outer film with a cut tape. It is an object of the present invention to provide a packaging material for rice balls, which makes it possible to reduce the facility cost and the product cost by simplifying the manufacturing process of the packaging material by making the packaging material unnecessary.

[0012]

In order to achieve the above object, the packaging material for rice balls according to the present invention comprises a rectangular inner film and an outer film, and the peripheral edges thereof are heat-welded to form a space between the two films. A rice ball wrapping material in which a sheet-shaped seaweed storage section is formed, in which the inner film is composed of two inner film pieces that can be separated from each other at approximately the center, and the outer film is the same as the inner film. , The outer width of the central portion of the outer film is larger than the width of the central portion of the inner film, which is composed of two outer film pieces that are separated from each other in the central portion. It is characterized in that the width is made larger.

The central overlapping portions of the inner film piece and the outer film piece are heat-welded at both upper and lower ends thereof.

Further, in addition to the heat-welded portions at the upper and lower ends of the central overlap portion of the inner film piece and the outer film piece, one or a plurality of spot heat-welded portions are also provided therebetween.

[0015]

FIG. 1 is a block diagram showing an embodiment of the present invention.
~ It demonstrates in detail based on FIG. FIG. 1 is a cross-sectional view of the present invention, FIG. 2 is an inside view of the same, FIG. 3 is an outside view of the same, FIG. 4 is an inside view of another example, and FIG. 5 is an outside view of another example. 6 is a perspective view in the middle of packaging, FIG. 7 is a rear view in which packaging is performed, FIG. 8 is a rear view in which another example is packaged, FIG. 9 is a rear view in the middle of opening, and FIG. It is a perspective view.

As shown in the above figures, the packaging material 1 of the present invention
Is a rice ball wrapping material including a rectangular inner film 2 and an outer film 3 and heat-sealing 4 the edges thereof to form a storage portion 6 for the sheet-like seaweed 5 between the films 2 and 3. There are two inner film pieces 2a formed by polymerizing the inner film 2 so that they can be separated from each other at a substantially central portion.
2a, the outer film 3 is replaced by the inner film 2
Similar to the above, it is composed of two outer film pieces 3a, 3a which are separated from each other in the approximately central portion and overlap each other, and
Polymerization width 1 in the overlap portion 2A of the inner film pieces 2a, 2a
On the other hand, the overlap width L in the overlap portion 3A of the outer film pieces 3a, 3a is formed to be large.

The inner film 2 (the inner film pieces 2a, 2
As a), a semi-transparent plastic film having a heat-welding property and a moisture-proof property, such as a medium-pressure polyethylene film or a high-pressure polyethylene film, which is coated with a slip material on the inside that directly contacts the packaged material rice ball 7, is suitable. Is.

The outer film 3 (the outer film pieces 3a, 3
As a), a transparent plastic film which is slippery with respect to the sheet-like seaweed 4 and has a heat-welding property and a moisture-proof property, such as a polyethylene film or a polypropylene film, is suitable.

The heat-welded portion 4 of the inner film 2 and the outer film 3 is provided over the entire circumference of both films, as shown in FIG. 2 or 3, and the inner film pieces 2a, 2 are also provided.
a and the entire upper and lower ends of the overlapped portions 2A and 3A of the outer film pieces 3a and 3a are also heat-welded to each other over the same width as the heat-welded portion 4 to open the overlapped portions 2A and 3A. Is being blocked.

The heat-welded portions of the overlapping portions 2A, 3A of the inner film pieces 2a, 2a and the outer film pieces 3a, 3a are not heat-welded to the whole as described above, but as shown in FIGS. 4 and 5. Spot heat welding 4c, 4d for easy separation
You may make it. Furthermore, not only the upper and lower ends of the overlapping portion 3A of the outer film piece 3a, but also one or more spot heat weldings 4e may be performed between them in a range that does not hinder the peeling.

Thus, the overlap width 1 in the overlap portion 2A of the inner film pieces 2a, 2a and the overlap width L in the overlap portion 3A of the outer film pieces 3a, 3a are formed as 1 <L as described above. The reason is as follows.

That is, since the overlapping portions 2A on the inner film pieces 2a, 2a contact the rice balls 7, it is desirable to set the polymerization width 1 as large as possible so that the moisture of the rice balls 7 is not mixed in. Outer film piece 3a,
Since the overlapping portion 3A of 3a is also exposed to the outside air, it is desirable to set the overlapping width L as large as possible so that moisture, dust, dust, etc. in the outside air are not mixed.

However, the larger the overlapping width 1 of the overlapping portion 2A on the inner film pieces 2a, 2a side is set, the more the difference in contact area between the left and right inner film pieces 2a, 2a with respect to the rice ball 7 occurs. At this time, the separation of the two film pieces becomes stiff, which tends to hinder smooth opening. In addition, unlike the outer film 3, the inner film 2 is not exposed to the outside air during packaging.

Therefore, it is desirable that the overlapping width 1 of the overlapping portion 2A on the inner film pieces 2a, 2a side is as small as possible within the range in which the moisture of the rice ball 7 can be prevented, so that smooth opening is possible. On the other hand, the overlap width L of the overlap portion 3A of the outer film pieces 3a, 3a is
Since it is only in contact with the dried sheet-like seaweed 5, there is almost no obstacle when opening it, and moisture, dust, dust, etc., which are constantly exposed to the outside air during packaging, easily penetrate into the inner film 2. It is desirable to be as large as possible.

For example, the vertical width of the packaging material 1 is generally 20.
0 mm to 220 mm, the width is about 120 mm to 130 mm, and the inner overlapping width l in this case is 10 mm to 15 mm.
mm, and the outer overlapping width L is set to 20 mm to 40 mm. Then, by increasing the outside polymerization width L and spot heat-welding 4c between the overlapping portions 3A as described above, the prevention of the mixing of outside air or the like through the overlapping portions 3A becomes more complete.

In order to wrap a triangle-shaped rice ball 7 using the packaging material 1 of the present invention, as shown in FIG. Both corners 1 of the wrapping material 1 which is wrapped and further overlapped
Fold A and 1A to one side. At this time, both corners 1A, 1A
It is desirable to minimize the overlap of the edges. Then, finally, the small corners 1A and 1A are fixed with the small label 8 shown in FIG. 7 so as not to be released. Besides the label 8, as shown in FIG. 8, both corners 1A, 1A
To the outer film pieces 3a, 3a by spot heat welding 9, 9 respectively.
It may be fixed at.

When eating the rice ball 7, the packaging material 1 which has been packaged as described above is pulled left and right. Then, since the inner film 2 and the outer film 3 are partially heat-welded at the central portion and most of them are overlapped so as to be separated from each other, as shown in FIG.
The wrapping material 1 includes the left and right inner film pieces 2a, 2 in the central portion.
a and outer film pieces 3a, 3a are separated.

First, for example, as shown in FIG. 9, when the inner film piece 2a on the right side and the outer film piece 3a on the right side are separated, the portion of the sheet-like seaweed 5 on the right side of the remaining rice ball 7 of the rice ball 7 is removed. Wrap it around the right half. Then, the inner film piece 2a on the left side and the outer film piece 3a on the left side are separated, and the portion of the sheet-like seaweed 5 on the left side of the rice ball 7 is wound around the left half of the rice ball. Do like this, rice ball 7
Is wrapped directly in sheet-shaped laver 5.

[0029]

Embodiments of the present invention will be described below with reference to the drawings. [Embodiment 1] As shown in FIG. 10, the inner film 2 is
By stacking two inner film pieces 2a, 2a having a vertical width n of 210 mm and a horizontal width m of 70 mm so that the end portions in the lengthwise direction have the same width l of about 10 mm at the central portion, the entire vertical length is increased. Width n is 210 mm, width p is 130 m
It is formed in a rectangle of m. As a material for the inner film 2, a translucent medium-pressure polyethylene film excellent in heat-welding property and moisture-proof property is used.

The outer film 3 has two outer film pieces 3a, 3a having a vertical width N of 210 mm and a horizontal width M of 75 mm, and the lengthwise ends of the two outer film pieces 3a, 3a have the same width L of about 20 mm. By overlapping them, a rectangle having an overall vertical width N of 210 mm and a horizontal width P of 130 mm is formed. As a material for the outer film 3, a transparent polyethylene film having excellent heat-welding property and moisture-proof property is used.

The sheet-shaped seaweed 5 has a vertical width y of 180 mm,
It is formed in a rectangle with a width w of 100 mm.

The wrapping material 1 holds the sheet-like seaweed 5 between the inner film 2 and the outer film 3 having the above construction,
The entire periphery of both films 2 and 3 is formed by heat welding 4 over a width of about 8 mm.

At this time, the upper and lower ends of the overlapping portion 2A of the inner film pieces 2a, 2a are also heat-welded over the same width as the above.
a to prevent the overlapping portion 2A from opening. On the other hand, the upper and lower ends of the overlapped portion 3A of the outer film pieces 3a, 3a are also heat-welded 4b, 4b over the same width as above to prevent the overlapped portion 3A from opening.

[Embodiment 2] The dimensions and material of the packaging material 1 are the same as those of the above-mentioned Embodiment 1. The size of the sheet-shaped seaweed 5 is also the same as that in the first embodiment. Furthermore, the inner and outer films 2, 3
The configuration and dimensions of the heat-sealed portion 4 at the periphery of the same are the same as those in the first embodiment.

However, in this embodiment, the inner film piece 2 is used.
a, 2a and the overlapping portion 2A of the outer film pieces 3a, 3a,
The heat welding of 3A is set to spot heat welding 4c, 4d which can be easily separated, as shown in FIGS. Further, a total of two spot heat-welding 4e are performed at intervals also on the center side of the overlapping portion 3A of the outer film pieces 3a, 3a.

[0036]

EFFECTS OF THE INVENTION Since the present invention is configured as described above, the rice ball and the sheet-like seaweed can be opened with a one-touch operation of simply pulling the packaging material to the left and right. It is extremely easy to eat.

Further, the polymerization width in the polymerization portion of the inner film is made small, whereas the polymerization width in the polymerization portion of the outer film which does not come into contact with the onigiri is set to be large.
While the film separation work can be performed smoothly without any hindrance, it is possible to prevent intrusion of moisture, dust, dust and the like contained in the outside air.

Furthermore, since the step of attaching the cut tape to the outer film is unnecessary, the manufacturing process can be simplified and the facility cost, material cost and product cost can be greatly reduced.

[Brief description of the drawings]

FIG. 1 shows a sectional view of the present invention.

FIG. 2 shows an inside view of the present invention.

FIG. 3 shows an external view of the present invention.

FIG. 4 shows an inner view of another example of the present invention.

FIG. 5 shows an external view of another example of the present invention.

FIG. 6 shows a perspective view of the present invention during packaging.

FIG. 7 shows a plan view of the present invention after packaging.

FIG. 8 shows a rear view of another example of the present invention after packaging.

FIG. 9 shows a rear view of the present invention in a partially opened state.

FIG. 10 shows an exploded perspective view of the present invention.

FIG. 11 is a perspective view in which a part of a conventional rice ball packaging material is cut away.

FIG. 12 shows a perspective view of a conventional rice ball packaging material after packaging.

[Explanation of symbols]

 1 Packaging Material 2 Inner Film 2A Overlapping Part 2a Inner Film Piece 3 Outer Film 3A Overlapping Part 3a Outer Film Piece 4 Heat Welding Part 4a Heat Welding Part 4b Heat Welding Part 4c Spot Heat Welding Part 4d Spot Heat Welding Part 4e Spot Heat Welding Part 5 Sheet-shaped laver 6 Storage section L, l Overlap width

Claims (4)

[Claims] 1. A rice ball wrapping material comprising a rectangular inner film and an outer film, and a peripheral portion of the film is heat-welded to form a sheet-like seaweed storage portion between the films, and the inner film comprises: The inner film is composed of two inner film pieces which are separably superposed in the substantially central portion, and the outer film is composed of two outer film pieces which are separably superposed in the substantially central portion, like the inner film. The packaging material for a rice ball is characterized in that the polymerization width of the central polymerized portion of the outer film piece is formed larger than the polymerization width of the central polymerized portion of the inner film piece. 2. The packaging material for rice balls according to claim 1, wherein the central overlapping portions of the inner film piece and the outer film piece are heat-welded at the upper and lower ends thereof. 3. The central overlapping portion of the inner film piece and the outer film piece is heat-welded at both upper and lower ends thereof, and one or more spot heat-welded portions are also provided therebetween. The packaging material for rice balls according to Item 1 or 2. 4. The polymerized width of the central polymerized portion of the inner film piece is set to about 10 mm, while the polymerized width of the central polymerized portion of the outer film is set to 20 mm or more. Packing material for rice balls described.