JP2005170467A - Food container, and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate the management until housing a food material, and to prevent labor from being required for the housing of the food material. <P>SOLUTION: A housing section 12 for hot-eatable food in which a food material A suitable for hot eating, and a housing section 13 for cold-eatable food in which a food material B suitable for cold eating are partitioned. On the surface of a container base material forming the housing section 13 for cold eating by enveloping, a coating film 4 of a conductive ink which shields a microwave C of a microwave oven is provided. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention belongs to a technical field related to a food container that accommodates both a food suitable for hot food and a food suitable for cold food so that only the food suitable for hot food can be heated in a microwave oven.

  Currently, so-called lunch boxes containing both foods suitable for hot food and foods suitable for cold food in food containers are sold in abundance at various stores. In addition, with the spread of microwave ovens, the eating habit of heating foods suitable for hot meals before eating is also widespread. For this reason, it has become desirable to heat only the foods suitable for hot food by putting the whole lunch box in a microwave oven without requiring special handling such as taking out the foods suitable for cold food.

2. Description of the Related Art Conventionally, for example, food containers described below are known as food containers that can heat only foods suitable for hot food in a microwave oven.
In JP-A-2002-154585, there is a compartment for a hot food containing a food suitable for hot food and a cold food containing a food suitable for cold food, and a heat resistant resin is applied to aluminum. A food container is described that is provided with a bag that is formed from a coated sheet and that is packaged with ingredients suitable for cold food.

  The food container according to Patent Document 1 shields microwaves in the microwave oven with the aluminum of the bag, thereby preventing the ingredients suitable for cold food from being heated when the ingredients suitable for hot food are heated in the microwave oven. To do.

  In the food container according to Patent Document 1, a separate bag is required for the container body composed of the hot food storage part and the cold food storage part, and it is necessary to pay attention to the loss of the bag. There is a problem that management of is troublesome. Moreover, since it is necessary to wrap a food suitable for cold food in a bag, there is a problem that it takes time to store the food.

  The present invention has been made in consideration of such problems, and is a food container that is easy to manage before the storage of food and does not take time to store the food, and a food container suitable for manufacturing the food container It is an object of the present invention to provide a manufacturing method.

  In order to solve the above-mentioned problems, the food container according to the present invention employs the means described in claims 1 and 2 of the claims.

  That is, in claim 1, in the food container in which the hot food storage portion in which the food suitable for hot food is stored and the cold food storage portion in which the food suitable for cold food is stored, the cold food storage portion is enclosed and formed. A conductive ink coating for shielding microwaves in a microwave oven is provided on the surface of the container base.

  In this means, a coating film of conductive ink that shields microwaves in the microwave oven is integrated with the container substrate.

  According to a second aspect of the present invention, in the food container of the first aspect, the conductive ink has an antibacterial function.

  In this means, the coating suppresses the growth of spoilage bacteria in the food.

  Furthermore, in order to solve the above-mentioned subject, the manufacturing method of the food container which concerns on this invention employ | adopts the means as described in Claim 3, 4 of a claim.

  That is, according to the third aspect of the present invention, a conductive ink coating film that shields microwaves in a microwave oven is provided on a part of a flat container base material, and a portion of the container base material that is not provided with a coating film is suitable for hot food. The container is formed so as to be a hot food storage part in which the food is stored, and a portion of the container base material on which the coating film is provided is partitioned as a cold food storage part in which a food suitable for cold food is stored.

  In this means, a flat container base material is provided with a coating film and then molded.

  According to a fourth aspect of the present invention, in the method for manufacturing a food container according to the third aspect, the coating film is provided by printing conductive ink on the container base material.

  In this means, the coating film is provided by the printing means.

  In the food container according to the present invention, a conductive ink coating film that shields microwaves in a microwave oven is integrated with the container base, and care is taken to prevent loss of the bag, or food suitable for cold food is packaged in a bag. Since it is not necessary, it is easy to manage the food before it is stored, and there is an effect that it does not take time to store the food. Further, as claimed in claim 2, the coating film suppresses the growth of spoilage bacteria in the food material, so that there is an effect of improving the storage stability of the food material.

  Further, the food container manufacturing method can be manufactured without impairing the effects of the food container according to the present invention described above, and is formed after a coating film is provided on a flat container base material. There is an effect that can be easily provided. Further, as the fourth aspect, since the coating film is provided by the printing means, there is an effect that the position and range of the coating film can be freely and easily adjusted.

  The best mode for carrying out a food container and a method for producing the same according to the present invention will be described below with reference to the drawings.

  FIG. 1 shows a first example of the best mode for carrying out a food container according to the present invention.

  In the first example, the one applied to a single-use lunch box consisting of a main body 1 and a lid 2 is shown.

  The main body 1 is a container base made of a heat-resistant synthetic resin material and is formed into a box shape with an open top. The inside of the main body 1 is partitioned by a raised partition wall 11 into a hot food storage portion 12 in which a food A suitable for hot food is stored and a cold food storage portion 13 in which a food B suitable for cold food is stored. . A flange 14 with which the lid 2 is engaged is provided on the periphery of the upper portion of the main body 1 so as to protrude outward.

  An ink coating 3 is provided on the inner surface of the portion of the container base 12 of the main body 1 for the hot food container 12. This coating film 3 is made of an ink obtained by adding a pigment to a heat-resistant varnish that satisfies a food hygiene standard, and decorates the hot-dish storage portion 12. As the ink, an ink having an antibacterial function without shielding the microwave C of the microwave oven is selected.

  A conductive ink coating 4 is provided on the inner surface of the container portion 13 of the main body 1 for the portion 13 for storing the cold food. This coating film 4 is made of a conductive ink in which powder particles such as carbon black, copper, aluminum, silver, nickel, cobalt, and titanium are dispersed in a heat-resistant varnish that satisfies food hygiene standards. The cold-eating container 13 can be shielded from the microwave C in the microwave oven. In addition, as this electroconductive ink, an antibacterial function can be provided by selecting what disperse | distributed the silver granular material.

  The lid 2 is a container base made of a heat-resistant synthetic resin material and is formed in a box shape with an open bottom. Inside the lid body 2, a flat surface 21 is provided so as to contact the upper part of the partition wall 11 of the main body 1 and cover the hot-dish storage portion 12 and the cold-eat storage portion 13. An engaging groove 22 that engages with the flange 14 of the main body 1 is provided on the periphery of the upper portion of the lid 2.

  An ink coating 3 similar to that described above is provided on the inner surface of the portion corresponding to the hot food container 12 of the main body 1 of the flat portion 21 of the container base of the lid 2.

  A coating film 4 of conductive ink similar to that described above is provided on the inner surface of the portion corresponding to the cold-eating container 13 of the main body 1 of the flat part 21 of the container base of the lid 2.

  According to the first example, there is no food container bag according to Patent Document 1, and there is no need to pay attention to the loss of the bag or to wrap the food B suitable for cold food in a bag. In addition, it is easy to manage the food B suitable for cold food before the food B is accommodated, and it is not necessary to store the food B suitable for cold food.

  In order to heat the food A suitable for hot meal, it is only necessary to put the lid 1 on the main body 1 and put it in the microwave oven. The microwave C of the microwave oven passes through the container base material of the main body 1 and the lid 2 and the coating 3 to heat the food A suitable for hot food, but is shielded by the coating 4 and suitable for cold food. B is not heated.

  In addition, when the coating films 3 and 4 have an antibacterial function, the preservation | save property which can suppress the proliferation of the spoilage bacteria of the food A suitable for a hot meal or the food B suitable for a cold food becomes high.

  FIG. 2 shows the best mode for carrying out the method for producing a food container according to the present invention.

  In this embodiment, as shown in FIG. 2 (A), a flat plate is selected as the container base of the main body 1.

  And as shown in FIG.2 (B), the coating films 3 and 4 are provided in the surface of the container base material of the main body 1 in the flat state. About this coating film 3 and 4, since various techniques, such as printing, spraying, vapor deposition, and transfer, can be selected using a flat surface, it can be easily provided on the surface of the container base material of the main body 1. it can. When the printing technique is selected, the position and range of the coating films 3 and 4 can be freely and easily adjusted.

  After that, as shown in FIG. 2 (C), the hot and cold food storage portion 12 and the cold food storage portion 13 are formed by a vacuum forming method, a pressure forming method, or the like while the container base material of the main body 1 is heated. To do.

  The lid 2 can be manufactured in the same manner as the main body 1.

  FIG. 3 shows a second example of the best mode for carrying out the food container according to the present invention.

  In the second example, the coating film 4 is provided on the inner and outer surfaces of the container base of the main body 1 and the lid 2.

  According to the second example, the shielding function of the microwave C in the microwave oven can be enhanced by the two-layer coating film 4.

  FIG. 4 shows a third example of the best mode for carrying out the food container according to the present invention.

  In the third example, the coating film 4 is provided on the outer surface of the container base body of the main body 1 and the lid body 2.

  According to the third example, since direct contact between the coating film 4 and the food B suitable for cold food is avoided, the selection range of the material of the coating film 4 is expanded.

  As described above, in addition to the illustrated examples, paper, cloth and other single materials and composite materials can be selected as the container base of the main body 1 and the lid 2.

  The food container and the manufacturing method thereof according to the present invention can be widely applied to containers for storing food other than single-use lunch boxes.

It is sectional drawing of the 1st example of the best form for implementing the food container which concerns on this invention, (A) shows an open state, (B) shows a closed state. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the manufacturing process of the best form for enforcing the manufacturing method of the food container which concerns on this invention, and the order of processes is shown by (A)-(C). It is sectional drawing of the principal part of the 2nd example of the best form for implementing the food container which concerns on this invention. It is sectional drawing of the principal part of the 3rd example of the best form for implementing the food container which concerns on this invention.

Explanation of symbols

1 Main body (container base material)
12 Housing for hot food 13 Housing for cold food 2 Lid (container base)
3 Coating film (for ink)
4 Coating film (for conductive ink)
A Food ingredients suitable for hot food B Food ingredients suitable for cold food C Microwave

Claims (4)

  The surface of the container base material that surrounds and forms the cold food storage portion in the food container in which the hot food storage portion in which the food suitable for hot food is stored and the cold food storage portion in which the food suitable for cold food is stored A food container comprising a conductive ink coating film for shielding microwaves in a microwave oven.   The food container according to claim 1, wherein the conductive ink has an antibacterial function.   A part of a flat container base is provided with a conductive ink coating that shields microwaves from the microwave oven, and the part of the container base that is not provided with a coating suitable for hot food is stored. A method for producing a food container, wherein the container part is formed so as to be partitioned as a container part for cold food in which a food material suitable for cold food is stored.   4. The food container manufacturing method according to claim 3, wherein the coating film is provided by printing conductive ink on the container substrate.

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