JPH11314683A - Food container for microwave oven, and food therein - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a food container for microwave oven in which the heating is achieved in a condition as is in a distribution process without providing any vent hole in the food container in achieving the heating using a microwave oven, and the food can be in an appropriately heated condition. SOLUTION: In a food container, a small hole 16 is provided either or each of a container body 12 or a lid part 14, and the small hole 16 is covered by a seal member 18 permeable for air but not for liquid. The heating can be achieved by the microwave oven without any action to make an air vent while the lid part is attached. When the small hole 16 is provided in a bottom part 12a, the heating with the container upside down becomes possible when the heating is achieved by the microwave oven, and more appropriate heating by the microwave oven becomes possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food container for a microwave oven and a food in a container for a microwave oven using the same, especially a food for a microwave oven for storing a food in advance and heating it by a microwave oven for use. The present invention relates to a container and food in a container for a microwave oven stored in the food container.

[0002]

2. Description of the Related Art As foods that are eaten by heating using a microwave oven, various foods such as those at normal temperature and frozen foods are circulating, and are generally used in food containers suitable for using a microwave oven. They are sold and sold.

In the case of such a microwave oven food container,
In order to maintain the quality of the food contained therein, the opening of the container body is usually closed by a thin sealing lid covering the entire opening. Therefore, when heating the food in such a microwave oven container with a microwave oven, the user forms a small hole in the lid portion or peels off the lid portion to perform heating. .

That is, heating is performed by forming such an air vent in order to prevent the container from being ruptured due to a rise in temperature. Further, depending on the stored food, it is also practiced to remove all such lids and heat the container with the container body opened.

[0005]

A first problem with the above-mentioned conventional food container for a microwave oven and the food in a container for a microwave oven using the same is as described above when heating with a microwave oven. That is, the user has to perform a troublesome operation of forming an air vent.

[0006] As a second problem, although foods for microwave ovens are stored in food containers suitable for various microwave ovens as described above, when heating in a microwave oven, foods for foods are not used. The heating state differs between the surface portion and the inside portion, that is, it is difficult to obtain a uniform heating state.

SUMMARY OF THE INVENTION The present invention has been made to solve the first problem or the second problem in addition thereto, and does not require a hole for venting air in a food container when heating using a microwave oven. To provide a food container for a microwave oven that can be heated as it is in the distribution process and a food in a container for a microwave oven using the same, or
In addition, an object of the present invention is to provide a food container for a microwave oven that can bring a food into a more appropriate overheated state, and a food in a container for a microwave oven using the same.

[0008]

In order to achieve the above object, a food container for a microwave oven according to claim 1 is provided with a small hole in one or both of a container main body and a lid portion for storing foodstuffs. The hole is sealed with a sealing member that has air permeability and does not allow liquid to pass through. This makes it possible to perform the heating process using the microwave without performing the operation of creating the air vent with the lid attached. That is, when the temperature inside the container rises due to the microwave oven, the internal pressure rises, and when steam or the like is generated, the pressurized air or steam is discharged from the small hole through the seal member. Therefore, excessive pressure increase in the container is eliminated, and rupture is effectively prevented.

Further, since the sealing member for closing the small hole does not allow liquid to pass therethrough, even if the liquid is present in the container in a normal state, there is no danger of leakage and the sealing member can be used without any trouble. it can.

[0010] The food container for a microwave oven according to claim 2 is
A small hole closed by a seal member is provided at a predetermined location on the bottom of the container body. The features of the invention according to this section are:
By forming the small holes in the bottom in this way, it becomes possible to heat the food in such a food container with the container turned upside down when heating the food with a microwave oven.

That is, since a small hole is formed at the bottom for allowing steam or pressurized air to escape, the steam or air is released from the small hole at the bottom during heating by turning the container body upside down and placing it in a microwave oven. Is discharged. When such food is eaten, the food is returned to a normal state, but even if liquid is present in the container, the liquid does not leak out of the sealing member, so that it is used without any problem. be able to.

A small hole is provided at the bottom of such a container body,
The proposal to allow the container to be turned upside down during heating was made in view of the following circumstances.

FIG. 7 shows a state in which a food contained in a conventional food container for a microwave oven is heated by a microwave oven. In this example, cooked rice (rice) 102 is placed in the bottom of the container 100, and a tool 104 including various ingredients is placed on the top.

In the case of food in such a state, the ingredients of the upper ingredient 104, for example, proteins such as meat, may be in a state of being scorched regardless of whether it is at normal temperature or frozen. This is due to the characteristics of microwaves scattered in a microwave oven. For example, an electric field concentrates on a portion of a protruding material in some places (antenna phenomenon), and that portion is heated to a higher temperature than other portions. This is due to the situation.

Therefore, as shown in FIG. 1B, when such a food-containing container 100 is placed upside down in a microwave oven and heated, the rice 104 is covered with the rice 104 and the heating is started. As a result, it has been empirically recognized that partial overheating is effectively prevented and more appropriate heating is possible. However, such a container 1
When heating upside down with 00, if the lid is removed as shown in the figure, the food inside will spill out during heating, so heat with the lid attached is necessary. However, when the container 100 is turned upside down in this manner, there is no open portion for releasing the pressurized air or steam on the container 100 side, so that the pressure inside the container 100 may rise excessively. In addition, forming a small hole by itself on the bottom cannot be performed because the liquid leaks out when the food contains a liquid material.

Therefore, in the invention according to the present invention, a small hole is formed in the bottom of the container, and the small hole is closed by the seal member. Thus, for example, in the case of frozen food, the protruding portion of the surface of the ingredient is not overheated, and there is no risk of scorching, and heating can be performed with the sealed lid attached. Furthermore, even when liquid is generated in the container after being thawed, there is no danger that the liquid will leak during heating and after returning to the normal state from the upside down state after the heating.

A food container for a microwave oven according to claim 3 is
The small holes are provided in recesses formed in the bottom. That is, a concave portion is provided at the bottom so as to protrude inward of the container, a small hole is provided here, and the small hole is closed with a seal member. The sticking of the seal member for closing the small hole is performed on either the outside or the inside of the container bottom, but by forming the small hole in the concave portion in this way, after heating, It is possible to prevent a finger from directly touching the small hole when holding the container body in a hand.

The food container for a microwave oven according to claim 4 is
Since the concave portion and the small hole are formed substantially at the center of the bottom portion, the discharge of the pressurized air and steam during the heating can be performed more evenly and smoothly.

According to a fifth aspect of the present invention, there is provided a food in a microwave oven container, wherein the food container according to the first to fourth aspects is filled with food at normal temperature. Thereby, it is possible to easily perform heating by the microwave oven in the form of the microwave heating in the transaction process, that is, without forming an opening in the lid or removing the lid.

Further, a small hole is formed in the bottom portion.
In the case where the food container is used, it is possible to obtain a food that can be heated upside down to perform more appropriate and appropriate microwave heating.

According to a sixth aspect of the present invention, there is provided a food in a microwave oven container, wherein a frozen food is put in the food container according to the first to fourth aspects. In the present invention, as in the case of the food according to claim 5, simplification of heating by a microwave oven is achieved,
In addition, when a food container having a small hole at the bottom is used, an appropriate microwave-heatable food can be obtained.

According to a seventh aspect of the present invention, the thickness of the frozen food placed in the container is formed so that the thickness of the frozen food material near the center is smaller than the thickness near the outer edge. In the case of frozen foods, it is possible to prepare the shape under predetermined conditions, but by making the thickness near the center thinner in this way, heating with a microwave oven should be more uniform. Becomes possible. Further, even in the case where the concave portion described in claim 3 is provided at the bottom portion, by making the portion closer to the center thin in this way, a space allowing the protrusion of the concave portion is secured. .

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a first embodiment according to the present invention. FIG. 1 (A) is a vertical sectional view at the center of a food container, and FIG. 1 (B) is a bottom view. (C) and (D) are partial cross-sectional views of characteristic portions of this embodiment. The food in the container is not shown.

The food container 10 according to the present embodiment has a container body 12 made of a resin that does not deform when heated by a microwave oven and a seal lid portion 14 that seals an upper opening of the container body 12. It is configured.

A feature of the present embodiment is that the small hole 1 is located substantially at the center of the bottom 12a of the container body 12.
6 is formed through. Furthermore, this small hole 1
The sealing member 18 is attached to the bottom 1
2a. The small hole 16 and the sealing member 1
An enlarged partial sectional view of a portion 8 is shown in FIG.

As shown, the sealing member 18 has a small hole 16.
And is firmly fixed so as to be in close contact with the outer surface of the bottom portion 12a. The seal member 18 has air permeability, and at the same time, seals the liquid, that is, has the property of allowing gas to pass but not liquid. As such a sealing member, a melt-blown nonwoven fabric “Microflex” (trade name) manufactured by Kuraray Co., Ltd. or the like can be used.

Accordingly, the pressurized air and steam in the container body 12 are discharged from the small holes 16 through the sealing member 18. The seal member 18 can be attached to the inner surface of the bottom portion 12a instead of the outer surface of the bottom portion 12a as shown in FIG.

Further, as shown in FIG.
It is understood that 6 is formed substantially at the center of the bottom 12a, and a circular sealing member 18 is adhered so as to cover the same.

FIG. 2 shows the configuration of the second embodiment. The same basic elements as those in the above embodiments are denoted by the same reference numerals. As shown in the figure, the food container 20 has substantially the same basic configuration as the upper food container 10, and a characteristic feature is that a small hole 22 for communicating with the outside is formed not in the container body 12 but in the seal lid 14. That is. That is, a small hole 22 is formed in a part of the seal lid 14, and the seal member 18 is attached to the inner surface of the lid 14 so as to close the small hole 22.

As described above, according to the configurations of the first and second embodiments, when heating the food contained in the container, the operation of forming an air vent hole in the container is performed. Without performing, it is possible to directly heat the container containing the food in a microwave oven.

That is, even when the temperature inside the container rises due to the heating and a pressure rise or steam is generated, these are discharged from the small holes 16 or 22 formed respectively, and
Rupture at the container lid is prevented.

FIG. 3 shows a third embodiment.
The same basic elements as those in the above embodiments are denoted by the same reference numerals. The characteristic feature of the present embodiment is that the small hole is formed by the bottom 12a (small hole 16), the lid 14 (small hole 22),
Further, it is also provided on the side portion (small hole 24) of the container body 12. A seal member 18 is similarly attached to each of the small holes.

The operation of this embodiment is the same as that of each of the above-described embodiments, and the purchased food-containing container can be heated by a microwave oven without performing any operation. Further, since many small holes are formed, the air bleeding action is better.

FIG. 4 shows the configuration of the fourth embodiment. The same basic elements as those in the above embodiments are denoted by the same reference numerals. A feature of the present embodiment is that a concave portion 26 is formed at a substantially central position of the container body 12. That is, the concave portion 26 having a predetermined depth is formed at a substantially central position of the bottom portion 12a so as to protrude inward of the container 12.
Are formed. A small hole 16 is formed at a substantially central position of the concave portion 26, and the sealing member 1 having such a size as to fit in the concave portion 26 is formed on the outer surface side of the concave portion 26.
8 is stuck.

According to such a configuration, similarly to the operation of each of the above-described embodiments, heating using a microwave oven can be performed without any trouble without a user performing any operation for forming an air vent hole. . Further, when the food in the container body 12 is heated, a small amount of heat may leak from the small holes 16. Therefore, by forming the recess 26 in this way, the food can be held by the container 40. In the case of eating, it is possible to effectively prevent the finger from touching the small hole 16.

When the food container according to the fourth embodiment is used, the shape of, for example, frozen food to be put therein corresponding to the concave portion 26 is formed in the central portion so as to allow the concave portion 26. It is preferable to form a space. FIGS. 5A and 5B show a configuration example of such a frozen food. As shown in the drawing, by providing a space on the lower side of the food that allows the recess 26 formed in the bottom portion 12a of the container, the thickness of the central portion of the food becomes thinner than the other portions. As a result, the volume of the outer portion where the temperature rises rapidly is increased, so that the uniform heating of the food can be achieved. In this example, the ingredients 2 are placed on top of the frozen rice 28 and 32, respectively.
The example is a food on which items 9 and 31 are placed.

Next, a description will be given of a characteristic operation common to the above-described embodiments in which the small hole 16 is formed in the bottom portion 12a of the container body 12. FIG. 6 shows a container body 12 having the configuration of the fourth embodiment shown in FIG. 4 as an example.

FIG. 7A shows an example of frozen food in which cooked rice 42 is placed in a container 40 according to the fourth embodiment, and a tool 44 is further placed on the upper side thereof. .
FIG. 2B shows an example of frozen food in which the noodles 46 are placed on the lower side and the ingredients 48 are placed on the noodles 46.

FIG. 9C shows an example of a heating operation of the frozen food put in the food container according to the fourth embodiment by a microwave oven. That is,
The food container 40 is installed in a microwave oven in a state where the food container 40 is upside down at the time of purchase without removing the seal lid 14 or partially opening it. By heating in such a state, the air pressurized by the temperature rise in the container 40 and the generated steam are discharged to the outside through the small holes 16 formed in the bottom portion 12 a through the seal member 18.

When heated upside down, the ingredients 44 and 48 are heated not in a state of being projected upward but in a state of being covered with cooked rice 42 or noodles 46, respectively. It will be. Therefore, for the tools 44 and 48 that are likely to cause an excessive temperature rise, this can be suppressed, and uniform heating without burning can be achieved. After heating, the food can be eaten upside down to the normal state.

In this case, even if a liquid substance exists in the container, the small hole 1 at the bottom is formed by the action of the sealing member 18.
There is no danger of the liquids leaking from 6 and the container can be used without any problem as a container.

As described above, the innovative configuration of forming a small hole in the bottom of the container body and attaching a seal member having a special property makes it easier and more uniform to heat the food by the microwave oven. It is possible to achieve it accurately.

It should be noted that the present invention is not limited to the configuration of each of the above embodiments, and various modifications can be made within the scope of the invention. For example, the position and number of the small holes formed in the container body and the lid are not limited to those having the above-described configuration, and various settings can be changed depending on the type of food contained in the container. The type of food is not limited to a patent, and appropriate heating of curry rice, hamburger, and the like together with rice and noodles is also possible.

The small hole 1 is formed in the bottom 12a of the container body 12.
In the case of forming 6, it is also possible to form a leg portion by providing a plurality of projections or the like on the bottom portion 12a, and to make the small hole portion 16 slightly float when installed in a microwave oven. With such a configuration, even when the apparatus is installed upside down, it is possible to reliably release air or steam from the small holes at the bottom.

[0045]

As described above, according to the food container for a microwave oven and the food in a container for a microwave oven using the same according to the present invention, the food at room temperature or frozen in the food container is used. When heating with a microwave oven, the heating operation can be performed without performing any operation such as forming an air vent hole in the container, that is, as it is in a purchased state, and the use of food in a microwave oven container is simplified. Is achieved.

Further, in the present invention, in which the small hole is provided at the bottom, the container can be heated upside down in the state at the time of purchase, and more appropriate food heating can be performed.

[Brief description of the drawings]

FIG. 1 shows a configuration of a first embodiment, and FIG.
5 is a central vertical sectional view of a food container, (B) is a bottom view, (C) is a partially enlarged sectional view of a characteristic portion, and (D) is a partially enlarged sectional view showing a modification of the characteristic portion.

FIG. 2 is a longitudinal sectional view of a food container showing a configuration of a second embodiment.

FIG. 3 is a longitudinal sectional view of a food container showing a configuration of a third embodiment.

FIG. 4 is a longitudinal sectional view of a food container showing a configuration of a fourth embodiment.

FIGS. 5A and 5B are schematic cross-sectional views each showing a configuration example of a food to be put in a food container according to a fourth embodiment.

FIGS. 6A, 6B, and 6C are diagrams for explaining the characteristic effects of the embodiment in which a small hole is formed at the bottom.

FIGS. 7A and 7B are explanatory diagrams for explaining an advantage of inverting a food placed in a food container upside down when the food is heated by a microwave oven.

[Explanation of symbols]

 10, 20, 30, 40 Food container according to the embodiment 12 Container body 12a Bottom part 14 Seal lid part 16, 22, 24 Small hole 18 Seal member 26 Depressed part

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Kazuo Miyazaki 3-1-3 Yushima, Bunkyo-ku, Tokyo (72) Inventor Takayoshi Imada 4-8-21 Kudanminami, Chiyoda-ku, Tokyo (72) Inventor Eiji Hayashi Tokyo (72) Inventor Takeo Kawai 1-92-4 Takinogawa, Kita-ku, Tokyo

Claims (7)

[Claims] 1. A container main body having an upper opening for storing food, a lid for sealing the upper opening of the container main body, a small hole provided in one or both of the container main body and the lid, A food container for a microwave oven, comprising: a sealing member having air permeability and a property of impervious to liquid, which is attached by closing a hole. 2. The food container for a microwave oven according to claim 1, wherein the small hole is provided at least at a predetermined position on a bottom portion of the container body. 3. The food container for a microwave oven according to claim 2, wherein a concave portion protruding inward of the container is provided at a bottom portion of the container main body, and the small hole is provided in the concave portion. . 4. The food container for a microwave oven according to claim 3, wherein the recess is formed at a substantially central position of the bottom. 5. A food in a container for a microwave oven, wherein the food is put in the food container according to claim 1. 6. A food in a microwave oven container, wherein the food container according to claim 1 is filled with frozen ingredients. 7. The food in a microwave oven container according to claim 6, wherein the frozen food is formed such that the thickness of the portion near the center is smaller than the thickness of the portion near the outer edge.