JP2023099983A - Structure of microwave-safe high-durability, heating and thermal insulation container, and manufacturing method thereof - Google Patents

Abstract

To provide a fixed structure and a manufacturing method of a container for a microwave oven, capable of tracking sudden temperature rise, securing the safety when touched from the periphery or the rear of the container, and improving heat retention.SOLUTION: A heat insulation container heated by using a microwave oven, has a magnetic substance material 3a containing ferrite which is fixed under the bottom of a container body, and holds a dual structure in which a highly heat-resistant sheet 4a is installed on an upper part, a lower part or both of them of the magnetic substance material, and further the lower side is covered with a highly heat-resistant sheet 4 sandwiching an air space, capable of heating the container body by the microwave oven, keeping long time heat insulation, and securing the safety.SELECTED DRAWING: Figure 6

Description

TECHNICAL FIELD The present invention relates to a heating and heat-retaining container that can avoid breakage of the container due to sudden heat generation when the container is heated and kept warm by a non-heating method of microwaves, and that has improved heat-retaining performance and safety performance.

The heating and heat-retaining container of the present invention is a ceramic, high-temperature heat-resistant resin molded product, or cellulose nanofiber molded container. It relates to a structure and a manufacturing method to be used.

The magnetic material used in the present invention is magnetic ferrite or ferrite silicone rubber resin, but may be a high heat resistant resin, Teflon resin, or a cellulose nanofiber resin containing an amount that reacts to microwaves.

The heating and heat-retaining container of the present invention is a container made of ceramics, high-temperature heat-resistant resin molded product, or cellulose nanofiber molded container. By providing multiple steps and using the steps to install insulation, the bottom of the container prevents high-temperature burns when touched by hands, etc., and furthermore, there is a The present invention relates to a structure and a manufacturing method for heating and keeping heat in which safety can be ensured and the heat retaining performance of the container can be greatly improved by providing an air layer.

When a container containing a magnetic material is heated in a microwave oven, the magnetic material is rapidly heated, and the difference in expansion coefficient between the container body and the magnetic material causes cracks in the container body. there is a danger of destroying

In the above-described case, even if the magnetic material is fixed to the inside and the inside of the container body, there is a danger that the container will not be able to withstand the high temperature generated due to the rapid temperature rise and will be destroyed. Even if it is fixed with a normal high-temperature adhesive, it cannot withstand sudden deformation due to thermal expansion and may peel off, so there was nothing that could be used safely. In addition, there was a method of kneading heat-generating material into a special resin, and a method of imprinting, but it was fashionable to cause a large deformation due to rapid heating, and the microwave oven was left while heating by mistake. In such a case, there remains a risk that sudden deformation may cause cracks in the periphery. Also, in the case of containers such as plates and bowls, it is customary to touch and carry them with bare hands, and there is a risk of burns due to accidentally touching the back side of the container which is at high temperature. There is also a method to cover the back side with a heat insulating material, but there was a drawback that the heat insulating effect decreased with the passage of time. In order to fix the heat insulating material to the container, there is also a method of attaching it to the heat-generating material using an adhesive, but it cannot withstand sudden temperature changes and peels off, resulting in long-term durability. I couldn't do it. In addition, containers are automatically cleaned using a dishwasher, and are widely used not only for commercial use but also for home use, so it is important to ensure safety during cleaning. There was no method or structure that could satisfy all.

In the present invention, a non-contact heating and heat-insulating magnetic material is fixed to the bottom of the container body and the inner and lining of the plateau, so that heating and heat retention can be performed in a short time using microwaves, and the temperature rise in areas other than the part where the magnetic material is set is suppressed. The present invention relates to a suppressible structure and a manufacturing method thereof. To provide a fixing structure and a manufacturing method for a container for a microwave oven, capable of following a rapid temperature rise, ensuring safety when the container is touched from the periphery or from the back side, and improving heat retention performance.

The present invention can provide a structure capable of keeping only a portion of the food that needs to be heated and kept at an appropriate temperature while the food is served in a container after cooking, and the food needs to be kept warm from serving to actual eating. .

In the market, microwave ovens are widely used not only in general households but also in commercial facilities because of their convenience and low cost.

However, when a container is heated and kept warm in a microwave oven, the material of the container is limited because it cannot cope with a sudden change in temperature. The main body is also heated, and the container becomes too hot to hold with bare hands.

In the case of heating and keeping warm with a microwave oven, there was no means to safely heat only the necessary part and keep warm for a long time.

means to solve the problem

In the present invention, a structure is formed in which a magnetic material that responds to microwaves is fixed or attached to the bottom of the container body and the inner and lining of the pedestal so that only the bottom and the inner and lining of the pedestal of the container body are heated. The fixing method may be an adhesive, or a screw or bolt made of a material that does not affect microwaves.

It is also possible to form through holes in the magnetic material used in the present invention to prevent positional displacement between the container body and the magnetic material and to strengthen the fixing and attachment.

By providing a step on the inside and back of the container body and attaching a heat-resistant protective sheet, it is possible to greatly extend the heat retention time of the container body after heating.

In addition to the protective sheet affixed to the stepped part of the hill above, by fixing a further protective sheet to the second stepped part, a sufficient air layer is formed in the gap, and the high temperature after heating pasted on the inside and back of the hill There is no risk of burns due to the danger of high temperature even if the back side of the container is directly touched, since the magnetic substance that has formed cannot be directly touched with bare hands.

Materials compatible with microwave heating include silicon rubber, high-temperature resin, and magnetic materials containing Teflon ferrite powder.

Effect of the invention

According to the invention, only the portion of the container body that needs to be heated can be selectively heated and kept warm. can eat

According to the present invention, it is possible to provide a container that can be used for microwave heating, and by adjusting the heating time and the shape, area, and thickness of the magnetic material, it is possible to adjust the heating temperature according to the purpose of use.

According to the present invention, in order to prevent direct contact with the heated high-temperature magnetic material and to enhance the heat retention effect, steps are provided in the hill and a protective sheet is attached to prevent burns and increase the heat retention effect. .

In the case of microwave heating, if a similar structure is set in the container body and inside and behind the lid of the container, the ingredients contained therein can be kept warm for a long time from above and below the container body and lid.

Under the heat-generating material, the heat-insulating material is doubled, and the structure includes a sufficient air layer in the space, so the heat generated by the microwave heating does not escape from the heat-generating material and can be kept warm for a long time. become. In addition, since the heat insulation performance is improved on the lower side, the heat energy of the heat-generating material can heat the upper side of the container more, shortening the time it takes to heat the container to a high temperature and enabling cooking in a short time. Become.

Multiple steps are installed around the inside of the base on the lower side of the container, so the deformation of the heat-insulating material can be reduced and the heat-insulating material can be pasted, so deformation due to heating is less likely to occur, and as a result, it is less likely to peel off. There are advantages. Furthermore, when washing with a dishwasher, it is important to ensure this strength, and there is an advantage that the durability can be ensured and the service life of the container can be extended.

Instead of attaching heat insulating material to the stepped part on the bottom of the container, another method is to install the heat insulating material by making projections in advance on the stepped part of the container and inserting the heat insulating material without using adhesive. It is needless to say that the same effect can be obtained by a method in which concave holes are provided on the circumference of the inside and back of the foot and a structure in which a protective sheet is set in advance is inserted.

Entire container perspective view A1-A1 container cross section enlarged view Plan view of magnetic material Cross section of magnetic material Enlarged cross-sectional view of the magnetic protection sheet built-in Cross-sectional view of setting to the container body

FIG. 1 is a perspective view of the entire container of the present invention. 1a is a handle on the uppermost surface of the container body, 1b is a lower bottom portion of the container, 1c is a shoulder portion on the side of the container, 1d is a hill portion below the circumference of the container body, and 1e is a container body inside the hill. 1f is the tatami matting part of the grounding surface of the platform, and 1g is the edge when holding the container.

FIG. 2 is an enlarged sectional view of container A1-A1. 2a is a magnetic fixing protrusion, 2b is a first step, 2c is a second step, and 2d is an inside and back portion of the foot. FIG. 3 is a plan view of the magnetic body, wherein 3a is the magnetic body and 3b is the magnetic body fixing through-hole. FIG. 4 is a cross-sectional view of a magnetic body, showing the structure of a flat magnetic body. FIG. 5 is an enlarged cross-sectional view of the magnetic substance protective sheet incorporated, and the magnetic substance 3a, the first step protective sheet 4a, and the second step protective sheet 4b are installed in this order on the bottom side of the container. FIG. 6 shows a cross-sectional view of the set to the container body, and 5b is a highly heat-insulating adhesive fixing portion, and a protective sheet is adhered to each stepped portion. 5a is an air-collecting heat-insulating portion, and the space between the two protective sheets enhances heat retention. 3a, the magnetic material generates heat due to the microwave of the microwave oven, but the generated heat has a heat retaining effect on the lower side of the container due to the protective sheet, and furthermore, air is accumulated between the second stepped heat insulating sheet. The presence of the heat insulating part effectively prevents the bottom of the container from becoming hot due to the heat insulating effect.

The protective sheet attached to the first step is spaced apart from the first step, and the protective sheet is fixed to the second step to create an air pool, which greatly enhances the insulation effect. does not reach a high temperature, it is possible to prevent burns even if it is touched by hand.

By providing a through hole 3b in the magnetic body 3a as shown in FIG. 3, it is possible to prevent the magnetic body 3a from being displaced when the magnetic body is fixed to the container.

As described above, since the microwave heats only the magnetic material 3a, the bottom 1b of the container to which the magnetic material 3a is fixed is similarly heated by heat conduction. 1a, shoulder portion 1c, hill portion 1d and tatami mat portion 1f are not heated, and only portion 1b where foodstuffs are served is efficiently heated and kept warm.

With such a structure, it is possible to efficiently heat and retain the container, prevent burns, and provide a container that is safe to handle.

According to the present invention, food loaded on tableware can be heated and kept at the optimum temperature from after cooking to serving in the food service industry, hotels, restaurants, food courts, drive-ins, inns, aircraft, ships, etc. , it is possible to satisfy the important elements that keep the taste better.

In the present invention, only the part where the magnetic body is set is heated, so it is safe to move the tableware when serving or eating, and while maintaining the heat retention effect, high temperature prevention measures can be taken to prevent burns. Become.

Since the magnetic material used in the present invention is thin and lightweight, the entire container can be made lightweight, and handling is not inconvenient during serving, storing, and washing dishes.

With the microwave-compatible material of the present invention, by stacking dishes in a microwave oven, it is possible to heat a plurality of dishes at once, thereby improving the efficiency of work in the kitchen.

Since the container of the present invention is safe and lightweight, it can also be used in ordinary households.

In the container of the present invention, it is also possible to set the same structure on the container body and the inside and the inside of the lid of the lid. It is possible to realize a container that is ideal for keeping food warm for room service and delivery delivery.

In the present invention, the object is a container with a raised base, but it can also be applied to a pizza plate without a raised base. Needless to say.

Although the present invention describes a magnetic material compatible with a microwave oven, if the container body has the same material structure, the magnetic material can be changed to a magnetic metal and the same structure can be applied to a container compatible with electromagnetic induction heating. Needless to say.

1a Container handle portion 1b Container bottom lower portion 1c Container shoulder portion 1d Container height portion 1e Container height inner lining portion 1f Container height tatami mat Portion 1g Container edge 2a Container magnetic material fixing projection 2b First level difference 2c in the hill Second level difference 2d in the hill Inner back part 3a of the container Magnetic body 3b... Magnetic body fixing through-hole 4a... First level difference protection sheet 4b... Second level difference protection sheet 5a... Air reservoir heat insulation part 5b... High heat insulation adhesive fixing part

Claims (2)

A heat-retaining container to be heated using a microwave oven, in which a magnetic material containing ferrite is fixed under the bottom of the container body, or a high heat-resistant sheet is added to the top or bottom of the magnetic material, or both It has a double structure in which it is fixed with something and covered with a high heat-resistant sheet sandwiching an air layer on the lower side, so that the container body can be heated by a microwave oven, heat retention can be maintained for a long time, and safety can be ensured. A heat insulating container and a method for manufacturing the same. A heat-retaining container that is heated using a microwave oven. A magnetic material containing ferrite is fixed under the bottom of the container body, and a high heat-resistant sheet is placed on the top or bottom of the magnetic material, or both. Furthermore, it has a double structure covered with a high heat-resistant sheet sandwiching an air layer on the lower side, and a step is provided around the bottom of the container, so that the heat insulating sheet can be easily attached to the container. A heat-retaining container with a microwave oven and a method for manufacturing the same.

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