JPH0513326Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a heating pack that combines a heating element that utilizes the heat of chemical reaction.

(Prior Art) Conventionally, methods of heating food and drink using the heat of chemical reactions such as the hydration reaction of quicklime and the oxidation reaction of iron powder are well known. For example, there are known integrated types in which a heating device is built into the bottom of a container such as a can of alcoholic beverage or soup. (Unexamined Japanese Patent Publication No. 1983-
Publication No. 157419).

(Problems to be Solved by the Invention) However, with a built-in heating device in which food and drink have been stored in advance, it has been impossible to select any food and drink one time at a time. It also has the disadvantage of being bulky when carried while climbing or hiking.

(Means for Solving the Problems) The present inventors have devised a portable and convenient heating pack that can heat any food or drink.

That is, the present invention is a heating pack that is provided with a chamber 2 for accommodating a heating element in the lower part, an adhesive 3 in the upper part, and a cut 4 that allows the entire surface to be opened.The heating pack body is made of a deformable material based on metal foil. In addition to the adhesive 3 and the cuts 4, a plastic fastener 5 is provided on the upper part of the heating pack, and a directly replaceable heating element 6 is housed outside the lower part of the heating pack, or a container 7 is provided. This heating pack is characterized by accommodating a replaceable heating element 6 fitted into the heating pack.

The present invention will be explained below with reference to the drawings.

FIGS. 1 and 2 are front and side views of a pack main body, which is provided with a concave portion constituting a heating element accommodating chamber 2 in its lower part and whose upper part is closed with an adhesive part 3, which serves as a heated body accommodating part.

In the figure, the side wall 1 of the pack body is made of a deformable material based on metal foil such as aluminum, and is selected from a material with relatively excellent heat insulation properties. For example, aluminum foil laminated with paper or plastic film on the outside is used. Also, even if a plastic film is laminated inside the metal foil, there is no problem as long as there is no thermal melting.
Also, is the side wall 1 formed in a tube shape?
Alternatively, a single sheet of material may be formed into an envelope shape, or two sheets of material may be formed into a bag shape by gluing their outer peripheries together.

FIGS. 1 and 2 show the heating pack before opening, which has an adhesive part 3 on the top, and the inside can be stored hygienically. Further, when opening the package, if the cut 4 is provided, the package can be opened easily without using scissors or the like.

In addition, by providing a plastic fastener 5 as a means for resealing the package after opening, it is possible to prevent leakage of the heated object, and the structure allows the package to be easily opened when the internal pressure reaches a certain level during the heating process. It's old and convenient. The material of the concave portion constituting the heating element storage chamber 2 provided at the lower part has good thermal conductivity and is not easily deformed, and specifically, iron, copper, aluminum, etc. are used. In particular, aluminum is suitable because it is easy to mold.

The side wall 1 and the heating element housing chamber 2 are joined to each other in a structure that prevents a heated object such as a liquid from leaking. That is, a method of joining by heat sealing or adhesive, or a method of bending and then pressing and fitting is used.

The heating element 6 is directly stored in the heating element storage chamber 2 from the back side of the container and then sealed using a substantially airtight lid to prevent deterioration due to chemical reaction during storage.
During use, the structure allows gas to move freely through the ventilation holes.

Further, the heating element 6 can be used while being housed in a container 7 and a bottom lid 8 that can be fitted tightly into the heating element storage chamber 2, as shown in FIG. Incidentally, the bottom cover 8 usually has a ventilation hole, and has a structure that allows the ventilation hole to be sealed with a seal or the like during storage.

The heating element 6 used in the present invention utilizes the heat of a chemical reaction, and specifically uses a composition that utilizes (a) hydration reaction of calcium oxide (b) oxidation reaction of iron (c) oxidation reaction of alkali metal sulfide. . For example, when calcium oxide is used, the purpose of the heating element can be easily achieved by forming a mixture of calcium oxide and a crystal water-containing compound and starting the reaction with a small amount of water.

The heating pack of the present invention can contain the contents of the pack body and powder for drinking and drinking such as coffee and soup in advance. Further, it is more convenient and more preferable to incorporate a paper or plastic tip, or to incorporate the tip and the edible powder together.

(Effects) The heating pack of the present invention is made of a deformable material with metal foil as the base material, and a plastic fastener is provided on the top of the heating pack, which reduces the rising pressure inside the pack that occurs during heating. It can be absorbed by the deformation of the plastic fastener, and bumping due to abnormal pressure rise can be avoided by the easy-to-open structure of the plastic fastener.
Furthermore, it is convenient to carry and allows you to arbitrarily select the object to be heated.
It can be used to heat alcohol, coffee, soup, milk, water, etc.

In addition, a replaceable heating element container allows the heating pack body to be efficiently reused, making it convenient to transport and allowing the temperature to be freely controlled.

[Brief explanation of the drawing]

Figure 1 is a front view of the heating pack body of the present invention;
The figure is a side view, and FIG. 3 is a sectional view of a heating element container housing a heating element used in the present invention. In the figure, 1 is the side wall of the heating pack, 2 is the heating element housing chamber, 3 is the adhesive part,
4 is a cut, 5 is a plastic fastener, 6 is a heating element, 7 is a heating element container, and 8 is a bottom cover.

Claims (1)

[Scope of utility model registration request] The heating pack is equipped with a chamber 2 for accommodating a heating element in the lower part, an adhesive 3 in the upper part, and a cut 4 that allows the entire surface to be opened.The heating pack body is made of a deformable material based on metal foil, and the In addition to the adhesive 3 and the cut 4, a plastic fastener 5 is provided on the upper part of the heating pack, and a heat generating element 6 that can be directly replaced is housed outside the lower part of the heating pack, or is fitted into a container 7. A heating pack characterized by housing a replaceable heating element 6.