JPH0335740Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an aluminum foil container for storing food, and more particularly, to an aluminum foil container in which the stored food can be heated during the process.

(Prior art) In general, this type of aluminum foil container is low cost, and has heat resistance and fire resistance, so it can be heated directly over a gas stove or other fire, so it can be used to heat noodles, hotpots, etc. It is widely used as a container for instant food that can be served as a meal just by heating it.

(Problems to be Solved by the Invention) By the way, microwave ovens have become popular in recent years, and containers for instant foods such as those described above are also required to be capable of being heated in the microwave oven.

However, such an aluminum foil container causes spark discharge when the outer edge of its peripheral wall contacts or adjoins the refrigerator wall inside the microwave oven.
The disadvantage was that it could not be used in a microwave oven.

As a prior art for solving such inconveniences, for example, as disclosed in the specification and drawings of Utility Model Application No. 60-39425, a slightly thick layer is added to the outer edge of the peripheral wall of the container body made of aluminum foil. By forming a synthetic resin layer, the electrical insulation properties of the synthetic resin layer prevent spark discharge even if the outer edge of the peripheral wall contacts or adjoins the oven wall inside the microwave oven. There is.

However, in the case of this prior art, although the aluminum foil container can be used for microwave ovens, on the other hand, it has a synthetic resin layer that does not have fire resistance, so it cannot be used in direct fires such as gas furnaces. There was a problem in that the aluminum foil container, which has excellent heat resistance and fire resistance, is not useful because it cannot be heated and can only be used in a microwave oven.

(Means for Solving the Problems) The present invention has been made to solve the problems of the conventional art, and has a container body made of pressure-formed aluminum foil, and the outer edge of the peripheral wall of the container body. A protective coating made of a heat-shrinkable synthetic resin is fitted over the entire circumference of the part, and a peeling means is formed in a part of the protective coating, and the peeling means peels off the protective coating from the outer edge of the peripheral wall. It is characterized by being constructed so that it can be removed.

(Function) When using a microwave oven to cook food in a container body, a protective coating is fitted to the outer edge of the peripheral wall of the container body, and the container body is placed on the rotary table of the microwave oven. In this case, even if the outer edge of the peripheral wall of the container body comes into contact with or is adjacent to the microwave oven chamber wall, the electrical insulation properties of the synthetic resin that constitutes the protective coating will prevent spark discharge between the chamber wall and the container body. does not occur.

On the other hand, when cooking food in a container body using a gas oven or the like, the protective coating is separated by a peeling means and removed from the outer edge of the peripheral wall of the container body. Since the non-fireproof protective coating has already been removed, it can be directly exposed to fire without any hindrance.

(Example) Hereinafter, an example of the aluminum foil container according to the present invention will be described in detail based on the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a container body, which is obtained by pressure-forming aluminum foil, and is formed upward from the outer periphery of a rectangular bottom wall 2. The flange portion 4 is formed by forming a circumferential wall 3 that stands up in a spreading shape, and by extending and bending the upper opening periphery of the circumferential wall 3 outward.

This flange portion 4 has a hem wrap 5 on its outer periphery, and a protective coating 6 is fitted over at least the hem wrap portion 5, preferably over almost the entire outer surface including the hem wrap portion 5 and both upper and lower surfaces of the flange portion 4. equipped.

The protective coating 6 is made of a heat-shrinkable synthetic resin film having an electrical insulation property of about 100 to 300 microns in thickness, such as a resin film of vinyl chloride, polypropylene, polyester, etc. 4, and shrink it by heating.
The protective film 6 is fitted onto the flange portion 4 in close contact with the flange portion 4, and all wrinkles formed on the surface of the flange portion 4 covered with the protective coating 6 are also covered.

Further, a peeling means 7 is formed at one or several places on the protective coating 6, and this peeling means 7 forms two perforations 8, 8 over the entire width from the upper surface to the lower surface of the protective coating 6. , the protective coating portion 9 sandwiched between the perforations 8 and 8 is removable,
When peeling the protective coating 6 from the flange portion 4,
As shown by the imaginary line in FIG. 2, by pulling the protective coating portion 9 outward and removing it, the remaining protective coating 6 can be easily peeled off from the flange portion 4. Incidentally, on this peeling means 7, arrows or the like indicating the positions of the perforations 8, 8 may be printed on the protective coating 6.

When placing the aluminum foil container configured as described above in the microwave oven and cooking the stored food, cover the opening of the container body 1 with a lid, wrap film, etc. (not shown), and At this time, even if the container is placed in an off-center position on the rotary table, the protective coating 6 protects the space between the container wall and the flange portion 4 from electrically contacting the container. Since the flange portion 4, which is particularly insulated and particularly susceptible to electric discharge, is covered with the protective coating 6, the generation of spark discharge can be reliably prevented.

In addition, a protective coating 6 is applied from this aluminum foil container.
It is also possible to peel off the container and heat it directly in a gas furnace or the like. In this case, since the protective coating 6, which is not fire-resistant, has been removed, there will be no problem when it is exposed to fire.

In addition, in the present invention, notches or notches facing both sides of the knob 8 may be formed in place of the perforations 9, 9, which are the peeling means 7 of the previously described embodiments.

(Effects of the invention) As explained above, the aluminum foil container of the invention allows food contained therein to be cooked in a microwave oven with a protective coating made of synthetic resin fitted to the outer edge of the peripheral wall of the container body. Furthermore, if the protective coating is peeled off from the outer edge of the peripheral wall by a peeling means, the container body can be directly heated and cooked in a gas oven or the like. Therefore, it can be used with heating appliances such as microwave ovens or gas furnaces, and it has a simple structure and can be manufactured at low cost, so it has practical effects such as greatly expanding the range of applications compared to conventional ones. big.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention, and FIG. 2 is a perspective view of the main part thereof. DESCRIPTION OF SYMBOLS 1... Container body, 5... Outer edge of peripheral wall of container body, 6... Protective coating, 7... Peeling means.

Claims (1)

[Scope of utility model registration request] Container body 1 made of pressure-molded aluminum foil
A protective coating 6 made of heat-shrinkable synthetic resin is fitted over the entire circumference of the outer edge 5 of the peripheral wall of the container body 1, and a peeling means 7 is provided on a part of the protective coating 6.
An aluminum foil container characterized in that the protective coating 6 is peeled off and removed from the outer edge portion 5 of the peripheral wall by the peeling means 7.