JPH0125505Y2 - - Google Patents

Description

[Detailed explanation of the idea]

This invention relates to a cooking container, particularly a disposable aluminum foil container that can be used in an electromagnetic cooker. Pots that can be used with induction cookers include iron,
It is limited to cast iron, enamel, martensitic stainless steel, iron sandwiched between stainless steel, etc., and aluminum, copper, etc. cannot be used. In particular, people are advised not to use aluminum foil, as it becomes red hot when placed on an induction cooktop. Therefore, the object of this invention is to provide a cooking container that uses aluminum foil and can also be used in an electromagnetic cooker. In order to solve the above problems, this invention uses aluminum foil with a thickness of 5 to 100μ and a thickness of 0.2
A cooking container was formed by laminating heat insulating layers with a weight of 150 g/m ² or more. In this way, the heat insulating layer prevents heat from escaping to the top plate of the electromagnetic cooker, improving heat absorption efficiency and allowing the use of aluminum foil as a heating element. Embodiments of this invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, the container 1 has a bottom wall 2 and a peripheral wall 3, and a flange 4 and handles 5, 5 are provided around the opening. Note that the flange 4 and/or the handles 5, 5 can be omitted. The container 1 as described above, as shown in FIG.
A heat insulating layer 8 is provided on the outer surface of the aluminum foil 6 via an adhesive 7. In addition, if necessary,
A printed layer 9, a colored layer, or a protective layer can be provided on the outer surface of the heat insulating layer 8. The thickness of the aluminum foil is 5-100μ, preferably 7-20μ. It is recognized that the thinner the thickness, the better the heating efficiency, so it is advantageous to use a thin foil. However, if it is less than 5 μm, it is likely to break during molding, while if it exceeds 100 μm, the heating efficiency will drop sharply, resulting in a cost increase. It's also expensive. In addition, types of aluminum foil include:
In addition to 1××× (pure aluminum) specified in JISH4160, 3××× (aluminum-manganese alloy), aluminum-iron alloy, etc.
Iron, manganese, magnesium total 1-5% by weight
Those containing the same can also be suitably used. The heat insulating layer 8 may be made of synthetic resin, foamed synthetic resin, asbestos paper, asbestos cloth, glass cloth,
Materials having heat resistance and heat insulation properties such as ceramic paper, cardboard for molding, and inorganic foam materials are preferable, and materials with good shape retention to maintain the shape as a cooking container are preferable. Taking into consideration such heat insulation and shape retention properties,
The insulation layer 8 has a thickness of 0.2 mm or more, or a weight of 150
g/ ^m2 or more. The reason for introducing the basis weight here is that, for paper and the like, the thickness is generally not indicated, but the basis weight is used. Note that, depending on the structure of the electromagnetic cooker, it is necessary to place the magnetic material only in the non-heat generating area located in the center of the top plate. For example, as shown in FIG. 1, such a structure may be provided with a means such as fixing an iron piece 10 to the bottom wall 2 or inserting it between layers 6 and 8. Next, a more detailed example of this invention will be described. Now, a molding material weighing 250 g/m ² was laminated on aluminum foil via a urethane adhesive, and this was molded into a flat circular container with a bottom wall diameter of 195 mm and a height of 70 mm. Store 1000c.c. of water at 20℃ in this container, and use an induction cooker (Sony Corporation, UF-150) at its maximum output for 80℃.
The time it took for the hot water to reach ℃ was measured. The results are shown in the table below. In addition, in the table, A is JISH4160 1N30 aluminum foil, B is iron 1.6% by weight, manganese 0.5
Aluminum-iron alloy foil containing 1.2% by weight; C is aluminum-manganese alloy foil containing 1.2% manganese;
D is an aluminum-manganese alloy foil containing 1.2% by weight of manganese and 1.0% by weight of magnesium.

【table】

[Table] As a comparative example, when we poured an equal amount of water into a commercially available enamel pot and measured the time, it took 36 minutes. As described above, according to this invention, by combining aluminum foil and a heat insulating material and limiting their thickness to a specific range, aluminum, which was previously considered impossible to use in induction cookers, can be used as a material. In addition, by using relatively thin and inexpensive materials, it is lightweight and suitable as a disposable container, and it can also be used as a packaging container for storing contents in advance and selling it. There are many advantages such as

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a container showing an embodiment of the invention, FIG. 2 is a plan view of the same, and FIG. 3 is a partially enlarged sectional view of the same. In the figure, 1 is a cooking container, 2 is a bottom wall, 3 is a peripheral wall,
4 is a flange, 6 is an aluminum foil, and 8 is a heat insulating layer.

Claims (1)

[Scope of utility model registration request] In a container having at least a bottom wall and a peripheral wall,
The bottom wall and the peripheral wall are made of aluminum foil with a thickness of 0.2 mm or more or a weight of 150 μm on the outer surface of aluminum foil with a thickness of 5 to 100 μm.
A cooking container characterized by being made of a laminated heat insulating layer of g/m ² or more.