JP2006341863A - Food storage container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a food storage container capable of absorbing a liquid such as a juice and an oil from a food, and preventing the food from being adhered to an inner surface of the container. <P>SOLUTION: The food storage container 11 is constituted of a sheet material consisting of a compound layer, and consists of a bottom part 13 and a side wall part 14 having a pleat 16 rising upwardly in the oblique direction from an outer peripheral end of the bottom part 13. The compound layer is constituted of a liquid-absorbing layer consisting of paper, a first liquid non-absorbing layer formed on the entire surface on the inner surface side of the liquid-absorbing layer and consisting of a PET film having a perforation 17 formed from the bottom part 13 so as to be across the side wall part 14, and a second liquid non-absorbing layer consisting of a PET film formed on the entire surface on the outer surface side of the liquid-absorbing layer. The liquid stored inside the food storage container 11 is absorbed by the liquid-absorbing layer via openings of the perforation 17. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a food container, and more particularly to a food container that contains a side dish to be put in a lunch box or the like.

  FIG. 6 is a perspective view showing the external shape of a food container used as a conventional side dish.

  With reference to the figure, the food container 61 is formed by press molding of a synthetic resin film, and includes a circular bottom portion 13 and a side wall portion 14 that rises obliquely upward from the outer peripheral edge of the bottom portion 13. A plurality of ridges 16 are formed on the side wall 14 around the entire circumference.

  At the time of use, various side dishes were stored in each food container 61 and stored in a lunch box together with the food container 61. However, in such a food container 61, there is a possibility that the juice or oil that exudes from the side dishes will be transferred to other side dishes and the flavor may be reduced.

  Therefore, as shown in Patent Document 1 and Patent Document 2, a container in which a cover film or a lid for closing the upper surface is attached to a container has been proposed.

  Moreover, as shown in Patent Document 3 and Patent Document 4, a container has been proposed that absorbs excess juice or oil that comes out of the dish by attaching paper or nonwoven fabric to the inner surface of the container.

Japanese Utility Model Publication No. 62-99552 Japanese Utility Model Publication No. 4-121214 Japanese Utility Model Publication 2-35262 Japanese Utility Model Publication No. 4-14385

  In the case where the conventional cover film or lid is attached as described above, it takes time to cover the container, and the cover film or the like is extra, which is disadvantageous in terms of cost. And after accommodating a side dish, since a lid | cover is covered, a side dish cannot be directly visually observed, Therefore The coloring etc. cannot be enjoyed in a lunch box.

  On the other hand, if the inner surface of the container is paper or non-woven fabric, paper or the like adheres to the food and is not hygienic. In addition, when taking out the side dishes with chopsticks or the like, there is a possibility that the paper or the like attached to the side dishes will be torn.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a food container that sucks liquids such as juice and oil from food and does not adhere to paper or nonwoven fabric. .

  In order to achieve the above object, the invention according to claim 1 is a food container constituted by a sheet material comprising a composite layer, wherein the composite layer comprises a liquid-absorbing layer having liquid-absorbing properties and a non-liquid-absorbing material. A first non-liquid-absorbing layer having at least one opening formed on the entire inner surface side of the container of the liquid-absorbing layer, and the container outer surface side of the liquid-absorbing layer having the liquid-absorbing layer And a second non-liquid-absorbing layer formed on the entire surface.

  If comprised in this way, the liquid adhering to the container inner surface will be absorbed into a liquid absorbing layer through opening.

  According to a second aspect of the present invention, in the configuration of the first aspect of the present invention, the opening includes a perforation.

  If comprised in this way, several opening will align on a line.

  According to a third aspect of the present invention, in the configuration of the second aspect of the invention, the food container includes a bottom portion and a side wall portion that is connected to the bottom portion and rises upward, and the perforation is formed at least at the bottom portion. is there.

  If comprised in this way, the liquid collected on the bottom will be absorbed into a liquid absorbing layer through a perforation.

  According to a fourth aspect of the present invention, in the configuration of the first aspect of the present invention, the openings include a plurality of holes arranged uniformly.

  If comprised in this way, the liquid adhering to the container inner surface will be absorbed through a hole from any part of the container inner surface.

  According to a fifth aspect of the present invention, in the configuration of the first aspect of the present invention, the liquid absorbing layer is made of paper, and the first non-liquid absorbing layer and the second non-liquid absorbing layer. Is made of a synthetic resin film.

  If comprised in this way, the whole container will be reduced in weight.

  According to a sixth aspect of the present invention, in the configuration of the first aspect of the present invention, the liquid absorbing layer and the first non-liquid absorbing layer are portions excluding at least a part of the opening. It adheres through the 1st adhesive agent applied automatically.

  If comprised in this way, while the effective effective area of opening will increase, a space will arise between a liquid absorptive layer and a 1st non-liquid absorptive layer.

  According to a seventh aspect of the present invention, in the configuration of the sixth aspect of the invention, the liquid absorbing layer and the second non-liquid absorbing layer are bonded via a partially applied second adhesive. It is.

  If comprised in this way, space will arise between a liquid absorbing layer and a 2nd non-liquid absorbing layer.

  The invention according to claim 8 is the constitution of the invention according to any one of claims 1 to 7, wherein the first non-liquid-absorbing layer and the second non-liquid-absorbing layer are at the outer peripheral end portions. They are connected together.

  If comprised in this way, the liquid absorbed by the liquid absorbing layer will be prevented from flowing out from the outer peripheral end of the container.

  As described above, according to the first aspect of the present invention, since the liquid adhering to the inner surface of the container is absorbed by the liquid-absorbing layer, the amount of liquid remaining on the inner surface of the container is reduced, and the liquid is less sticky. Can maintain the flavor of food.

  In the invention according to claim 2, in addition to the effect of the invention according to claim 1, since the plurality of openings are aligned, the liquid absorption effect is improved. Further, since the perforation can be formed together with the formation of the first non-liquid-absorbing layer, the container can be manufactured efficiently.

  In addition to the effect of the invention of claim 2, the invention described in claim 3 absorbs the liquid adhering to the inner surface of the container efficiently because the liquid accumulated in the bottom is absorbed through the perforation. it can.

  In addition to the effect of the first aspect, the liquid adhering to the inner surface of the container is absorbed from any part of the inner surface of the container, so that the liquid absorption efficiency is improved.

  In addition to the effects of the invention according to any one of claims 1 to 4, the invention according to claim 5 is improved in usability because the entire container is reduced in weight.

  According to the sixth aspect of the invention, in addition to the effect of the invention according to any one of the first to fifth aspects, the substantial effective area of the opening is increased, and the liquid-absorbing layer and the first non-liquid-absorbing Since a space is formed between the adhesive layer and the adhesive layer, the liquid absorption performance is improved and the liquid absorption amount is increased as compared with the case where the first adhesive is applied to the entire surface.

  According to the seventh aspect of the invention, in addition to the effect of the sixth aspect of the invention, since a space is formed between the liquid absorbing layer and the second non-liquid absorbing layer, the second adhesive is applied to the entire surface. The amount of liquid absorption is increased compared to that.

  According to the eighth aspect of the invention, in addition to the effect of the first aspect of the invention, the sucked liquid is prevented from flowing out from the outer peripheral end of the container. Therefore, the reliability of the container is further improved.

  FIG. 1 is a perspective view showing the external shape of a food container according to the first embodiment of the present invention, and FIG. 2 is an enlarged end view of the II-II line shown in FIG.

  With reference to these drawings, the food container 11 is formed by press molding of a sheet material made of a composite layer, which will be described later, and has a circular bottom portion 13 and a side wall portion 14 that rises obliquely upward from the outer peripheral end of the bottom portion 13. It is composed of A plurality of ridges 16 are formed on the side wall portion 14 at the time of pressing. Further, a perforation 17 is formed that extends across the center of the bottom portion 13 and extends to the upper end of the side wall portion 14. The perforations 17 are formed only on the inner surface side layer of the food container 11. Details of this will be described later.

  FIG. 3 is an enlarged end view of the “X” portion shown in FIG. 2, and FIG. 4 is a plan view seen from the line IV-IV shown in FIG.

With reference to these figures, the composite layer 18 constituting the food container 11 includes a liquid-absorbing layer 19 having a liquid-absorbing property made of paper (basis weight: 20 g / m ² ) formed in the intermediate layer. The liquid-absorbing layer 19 has a non-liquid-absorbing property made of polyethylene terephthalate (PET) having a thickness of 12 μm attached to the entire surface of the liquid-absorbing layer 19 through a first adhesive 22 partially applied in a lattice pattern. A first non-absorbing layer 21 and a non-absorbing layer made of PET having a thickness of 12 μm adhered to the entire surface via a second adhesive 25 partially applied in a lattice pattern on the lower surface of the liquid absorbing layer 19. It is comprised from the 2nd non-liquid-absorbing layer 24 which has liquidity. The thickness of each PET is preferably 9 to 50 μm in consideration of moldability. Further, as the synthetic resin film other than PET, polyethylene, polypropylene, nylon, or the like may be used, and an aluminum foil instead of the synthetic resin film has the same effect. Furthermore, although the first non-liquid-absorbing layer 21 and the second liquid-absorbing layer 24 are composed of the same material, they may not be the same material.

  As described above, the perforation 17 in which the rectangular openings are formed on the line with a predetermined interval is formed only in the first non-liquid-absorbing layer 21. And the position is formed in the 1st non-liquid-absorbing layer 21 of the part to which the 1st adhesive agent 22 is not apply | coated as FIG. 4 shows. For this reason, as shown in FIG. 3, the perforations 17 are displaced from each other facing the opening of the first non-liquid-absorbing layer 21, and the substantial opening area is enlarged.

  Next, with reference to these drawings, the liquid absorption operation during use will be described.

  In use, the cooked side dishes are stored in the food container 11 shown in FIG. Then, juice or oil oozes out from the side dishes, adheres to the inner surface of the container, and mainly accumulates at the bottom 13. However, since the perforations 17 are formed in the bottom portion 13, these liquids enter the liquid-absorbing layer 19 through the gaps in the openings. The invading liquid spreads over the entire surface of the liquid absorbing layer 19 due to the liquid absorbing performance of the liquid absorbing layer 19. That is, the liquid accumulated on the bottom portion 13 of the food container 11 is absorbed by the liquid absorbent layer 19 through the perforations 17, and the apparent liquid on the inner surface of the container decreases.

  At this time, in the first non-liquid-absorbing layer 21 and the second non-liquid-absorbing layer 24, the first adhesive 22 and the second adhesive 25 are partially applied to the liquid-absorbing layer 19 as described above. It has been applied. Therefore, the amount of the first adhesive 22 and the second adhesive 25 soaked into the liquid-absorbing layer 19 itself is smaller than that in which the entire surface is applied. Therefore, there is no possibility that the liquid absorbing performance of the liquid absorbing layer 19 is significantly reduced. Further, since the first adhesive 22 and the second adhesive 25 are partially applied, the liquid absorbing layer 19 and the first non-liquid absorbing layer 21 and the liquid absorbing layer 19 and the second non-liquid absorbing layer 21 are applied. Spaces are formed between the liquid-absorbing layer 24 and each. Since the liquid sucked in this space can also be held, the liquid absorption amount substantially increases with respect to the liquid-absorbing layer 19 with the adhesive adhered to the entire surface without such a space.

  Since the second non-liquid-absorbing layer 24 is not formed with perforations or the like, the liquid sucked by the liquid-absorbing layer 19 may ooze out to the outer surface through the second non-liquid-absorbing layer 24. There is no.

  Thus, the liquid such as juice or oil coming out from the side dish stored in the food container 11 passes through the slight opening of the perforation 17 to form the first non-liquid-absorbing layer 21 and the second non-liquid-absorbing layer 24. In the meantime, it will be sucked into the liquid-absorbing layer 19. As a result, there is no stickiness due to the stored side dishes, and there is no possibility that the liquid generated therefrom will be transferred to other side dishes. Further, since no liquid oozes out to the outer surface of the food container 11, there is no possibility of causing uncomfortable feeling that the outer surface sticks even when the food container 11 is picked. Furthermore, since the liquid-absorbing layer 19 is not exposed to the outside, there is no risk of the liquid-absorbing layer 19 being broken when taking out the side dishes using chopsticks or the like, and the side dishes are easily taken out.

  FIG. 5 is a schematic end view showing the manufacturing process of the food container according to the first embodiment of the present invention.

  Referring to the drawing, as shown in (1), a synthetic resin film made of PET to be the first non-absorbent layer 21 is prepared, and in a predetermined position as shown in (2). A perforation 17 is formed through the perforation forming blade 27.

  Next, the first adhesive is partially applied to the lower surface of the first non-liquid-absorbing layer 21 in which the perforations 17 are formed, and a paper to be the liquid-absorbing layer 19 is attached to the entire surface to thereby adhere the first adhesive. The non-absorbent layer 21 is integrated. At this time, the application position is determined so that the first adhesive does not block at least a part of the opening of the perforation 17.

  Next, after partially applying the second adhesive on the upper surface of the PET film to be the second non-absorbent layer 24, the second non-absorbent layer 24 is applied to the entire lower surface of the liquid-absorbent layer 19 to thereby form the first non-absorbent layer 19. The liquid layer 21, the liquid absorbing layer 19, and the second non-liquid absorbing layer 24 are integrated.

  A punching blank 30 is formed in a desired shape with respect to the composite layer 18 formed in this manner using a cutting blade 28. At this time, the position of the cutting blade 28 is determined so that the blank 30 always includes at least a part of the perforation 17.

  Next, the food container 11 including the bottom portion 13 and the side wall portion 14 is formed by pressing the formed blank 30. A perforation 17 is formed in the first non-liquid-absorbing layer 21 located on the inner surface side of the bottom portion 13.

  In this way, the food container 11 shown in FIG. 1 is efficiently formed.

  As described above, since the perforations 17 are formed in a single state of the first non-liquid-absorbing layer 21, a product that is efficient and highly reliable with respect to what is formed after the press working is completed.

  In the above-described embodiment, the synthetic resin film is attached to the upper and lower surfaces of paper as the center as the composite layer. However, other structures may be used as long as the same effect is obtained. For example, an opening, such as a perforation, is formed on a paper coated with a resin coating on one side of the paper, and a resin coating is applied on the other side of the paper as a second non-liquid absorbing layer. Things can be used. Alternatively, a synthetic resin film may be attached to one side of the paper and a resin coating may be applied to the other side. In this case, as the resin coating material, for example, polypropylene, polyethylene, PET, polybutylene terephthalate and the like are preferable.

  Further, in the above embodiment, a perforation is formed in the first non-liquid-absorbing layer and a liquid-absorbing layer is attached thereto. However, a perforation is formed with the liquid-absorbing layer attached. May be.

Further, in the above-described embodiment, one perforation is formed in the entire container. However, a plurality of perforations may be formed, and a part of the perforation is formed, for example, only at the bottom. You may form in. Further, a simple hole may be used instead of the perforation. In this case, it is preferable to use a plurality of holes and arrange them uniformly to improve the liquid absorption efficiency.

  Further, in the above embodiment, the first non-liquid-absorbing layer and the second non-liquid-absorbing layer are both partially bonded with an adhesive to the liquid-absorbing layer, but at least the liquid-absorbing layer is at least If a part of the container can be inserted into the inner surface of the container, these may be attached to the entire surface.

  Furthermore, in the above embodiment, paper is used as the liquid-absorbing layer, but other materials may be used as long as they can absorb or absorb water. For example, a non-woven fabric made of rayon, pulp, PET, polypropylene, or the like, a non-woven fabric or paper containing a polymer absorber, and cotton fabric (woven fabric) may be used.

  Furthermore, in the above-described embodiment, the first adhesive and the second adhesive are applied in a lattice shape, but it is needless to say that the first adhesive and the second adhesive may be applied in other shapes such as islands.

  Further, in the above embodiment, the first non-liquid-absorbing layer and the second non-liquid-absorbing layer are not particularly connected at the outer peripheral edge of the container, but if they are connected, they penetrate into the liquid-absorbing layer. Since the liquid is prevented from flowing out from the outer peripheral end of the container, the reliability of the container is improved. In this case, if the composite layer is cut by heating the cutting blade 28 in the step (5) of FIG. 5, the cut end faces of the first non-liquid-absorbing layer and the second non-liquid-absorbing layer are welded to each other. So you can connect them easily.

  Further, in the above embodiment, the side wall of the container is formed with a ridge, but the ridge may not be formed. Moreover, you may make it form the outer periphery winding part at the outer terminal part of a container. In this case, the liquid soaked in the liquid-absorbing layer is prevented from flowing out from the outer peripheral end of the container, which is preferable because the reliability of the container is improved.

It is the perspective view which showed the external appearance shape of the food storage container by 1st Embodiment of this invention. It is an enlarged end view of the II-II line shown in FIG. FIG. 3 is an enlarged end view of an “X” portion shown in FIG. 2. It is the top view seen from the IV-IV line shown in FIG. It is the schematic end elevation which showed the manufacturing process of the food container by 1st Embodiment of this invention. It is the perspective view which showed the external appearance shape of the conventional food container.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Food container 13 ... Bottom part 14 ... Side wall part 17 ... Perforation 18 ... Composite layer 19 ... Liquid absorbing layer 21 ... 1st non-liquid absorbing layer 22 ... 1st adhesive 24 ... 2nd non liquid absorbing layer 25 ... 2nd adhesive In addition, the same code | symbol in each figure shows the same or an equivalent part.

Claims (8)

In a food container composed of a sheet material composed of a composite layer,
The composite layer is
A liquid absorbent layer having liquid absorbency;
A first non-liquid-absorbing layer having a non-liquid-absorbing property, formed on the entire inner surface of the container of the liquid-absorbing layer, and having at least one opening;
A food container comprising a second non-liquid-absorbing layer having a non-liquid-absorbing property and formed on the entire outer surface of the liquid-absorbing layer. The food container according to claim 1, wherein the opening includes a perforation. The food container is composed of a bottom portion and a side wall portion that is connected to the bottom portion and rises upward,
The food container according to claim 2, wherein the perforation is formed at least on the bottom. The food container according to claim 1, wherein the opening includes a plurality of holes arranged uniformly. The liquid absorbing layer is made of paper,
The food container according to any one of claims 1 to 4, wherein the first non-liquid-absorbing layer and the second non-liquid-absorbing layer are made of a synthetic resin film. 6. The liquid-absorbing layer and the first non-liquid-absorbing layer are bonded via a first adhesive that is partially applied except for at least a part of the opening. The food container according to any one of the above. The food container according to claim 6, wherein the liquid-absorbing layer and the second non-liquid-absorbing layer are bonded via a partially applied second adhesive. The food container according to any one of claims 1 to 7, wherein the first non-liquid-absorbing layer and the second non-liquid-absorbing layer are integrally connected at respective outer peripheral ends.

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