JPH0439188Y2 - - Google Patents

Description

[Detailed explanation of the idea]

Purpose of invention

[Industrial application field]

The present invention relates to a packaging container for packaging food and cooking it in a microwave oven.

[Conventional technology]

When cooking foods such as pizza, gyoza, shyu mai, okonomiyaki, bread, and hamburgers in a microwave oven, do not transfer the food to another container, leave it in the packaging container, or leave the food in the packaging container. It would be convenient if it could be heated while placed on top. When heating food in a packaging container or on top of a packaging container, there is a difference in the speed at which the food heats up even if the capacity (wattage) of the microwave oven is the same. It has been experienced that the time required for cooking at a specified temperature varies. This is an inconvenience when cooking by heating in a microwave oven, although it may be necessary to simply heat the food. The microwave used in microwave ovens has a frequency of 2450MHz and a wavelength of 12cm. Therefore, heating is most intense in a microwave oven at a distance of about 3 cm (1/2 cm) from the bottom, where the intensity of the microwaves reflected from the bottom is greatest.
4 wavelength), and the next position is approximately 9 cm (3/4 wavelength). However, there are various types of microwave ovens on the market, with some having turntables made of enameled iron, others made of ceramics or glass, and even some without turntables. It was found that such a difference manifests itself in the difference in cooking time mentioned above. If the turntable is made of metal, the microwaves will be reflected by the turntable, so the area approximately 3 cm or 9 cm from the surface is most advantageous for heating. On the other hand, if the turntable is made of glass or ceramics, these materials allow microwaves to pass through them and are as if they do not exist, so the optimal position on the turntable for heating is different. It turns out I can't say it. The height from the bottom of the turntable is
This is because it differs depending on the model.

[Problem that the invention attempts to solve]

The purpose of this invention is to create a microwave oven cooking method that allows the time required for heating to cook to be constant no matter what type of microwave oven is used on the market, and that allows heating to be completed within the shortest possible time. Our purpose is to provide food packaging containers. Structure of the idea

[Means to solve the problem]

The packaging container for microwave cooking of the present invention is a container for packaging food and cooking it in a microwave oven, and as shown in FIGS. 1 and 2, the bottom surface 2 has a microwave reflector 21. It is characterized in that a surface 1 for placing food is provided 1 to 4 cm above. Typical embodiments of the packaging container for microwave cooking of the present invention include a carton-shaped container as shown in Fig. 1, and a double-cup-shaped container as shown in Fig. 2. It is something. The container may be made of materials that can withstand heating in a microwave oven, such as paper, plastic, and laminates thereof. As the microwave reflector, aluminum foil may be used and attached to the front or back of the bottom of the container using an appropriate adhesive. The edges of the reflector should be shaped without protrusions, e.g. circular, to prevent the generation of sparks. In a preferred embodiment of the present invention, as shown in FIGS. 1 and 2, a surface 1 for placing food;
A microwave absorbing heating element 11 is provided.
As the microwave absorption heating element, it is preferable to use a polyester film on which aluminum is vapor-deposited, indium tin oxide or tin oxide is vapor-deposited or sputtered, and this can also be attached with an adhesive.

[Effect]

When the packaging container for microwave cooking of the present invention is placed in a microwave oven, the microwaves normally emitted from the top of the microwave are reflected by the reflector 21, and the microwaves are reflected at positions approximately 3 cm and approximately 9 cm above the reflective surface. The strongest heating will occur at . In this way, the bottom surface 2 provided with the microwave reflector 21 acts as if it were the bottom surface of a microwave oven, so even if you use a microwave oven with a turntable made of glass or ceramics, the turntable Regardless of the material or height from the bottom, the heating conditions will remain constant when a certain packaging container is used. When this container is placed in a microwave oven without a turntable or in a microwave oven with a metal turntable, the reflector 21, which is the reflecting surface of the microwave, is located at a position not much different from the bottom surface or the surface of the turntable. Therefore, in reality, the microwave reflector has little significance. However, the benefit of constant heating regardless of the type of microwave oven is not lost. As described above, in this container, the distance h between the surface 1 on which the food is placed and the bottom surface 2 having the microwave reflector 21 is selected to be 1 to 4 cm, so that the food 3 can be heated most efficiently by microwaves. It is placed near a high reflective surface, about 3 cm away. Therefore, no matter what type of microwave oven is used, heating time is reduced. As shown in FIGS. 1 and 2, in the embodiment in which the microwave absorption heating element 11 is provided on the surface 1 on which the food is placed, the food itself is efficiently heated, that is, from the inside. The temperature of the microwave absorbing heating element 11 is also increased, so that the underside of the food 3 can be particularly strongly heated and the food can be cooked to have a crisp texture. Effects of the invention If the packaging container for microwave cooking of the invention is used, cooking can be done within a certain amount of time, and the heating time can be shortened, no matter what type of microwave oven is used on the market. Therefore, when supplying food in packaged containers, if the heating time is determined according to the capacity of the microwave oven, consumers will always be able to use the same conditions no matter what type of microwave oven they use. You can get food prepared by: This is a great benefit, especially for packaged foods that are produced and distributed in large quantities.

[Brief explanation of the drawing]

FIG. 1 and FIG. 2 are both schematic cross-sectional views showing typical examples of the microwave cooking packaging container of the present invention. 1...Surface for placing food, 11...Microwave absorption heating element, 2...Bottom surface, 21...Microwave reflector, 3...Food.

Claims (1)

[Claims for Utility Model Registration] (1) In a container for packaging food and cooking it in a microwave oven, a surface for placing the food 1 to 4 cm above the bottom surface 2 having the microwave reflector 21. 1. A packaging container for microwave cooking, characterized by comprising: 1. (2) The packaging container for microwave cooking according to claim 1 of the utility model registration claim, wherein the container is a carton. (3) The packaging container for microwave cooking according to claim 1 of the utility model registration claim, wherein the container is a double cup. (4) The packaging container for microwave cooking according to claim 1, which uses aluminum foil as a microwave reflector. (5) The packaging container for microwave cooking according to claim 1 of the utility model registration claim, which is provided with a microwave-absorbing heating element on the surface on which food is placed. (6) A microwave heating device for microwave cooking according to claim 5, which uses a polyester film on which aluminum is vapor-deposited, indium tin oxide or tin oxide is vapor-deposited or sputtered, as the microwave absorption heating element. packaging container.