JPH0143390Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a simple heating material. In particular, it relates to a simple heating material that utilizes the heat of reaction between a heat-generating material made of quicklime and water.

It is widely known that when water is added to quicklime, it reacts and generates heat, and a method of heating retort food stored in a bag using this exothermic reaction is also known. For example, in Utility Model Application Publication No. 56-32067, quicklime is in direct contact with the exterior packaging material of the food, and since neither the quicklime nor the reaction product slaked lime are edible, sufficient hygiene precautions are taken. However, there is also the problem that consumers cannot select and heat the object to be heated as appropriate. Also,
Utility Model Publication No. 58-105880 and Utility Model Publication No. 52-28711 disclose that quicklime and food are placed in separate bags to prevent quicklime and slaked lime from adhering to the object to be heated. February 17, 1982
Date of application for utility model registration (name: "Heat-generating packaging")
The three chambers of the three-chamber package are configured to accommodate quicklime and the object to be heated selected by the consumer, respectively, to prevent quicklime and slaked lime from adhering to the exterior material of the object to be heated. However, in the case of Utility Model Publication No. 52-28711, there is a problem in terms of thermal conductivity because the quicklime exterior material is required to be a thick sheet that can completely block moisture in the air. , Utility Model Publication No. 105880/1980 and the utility model registration application dated February 17, 1980, the quicklime must be contained in a coarse nonwoven fabric that is easily permeable to water, so it is extremely expensive. There is the problem of becoming a thing.

In order to deal with these problems, the present invention devised plate-shaped quicklime with countless micropores in place of the conventional powdered or granular quicklime, and by using this, the above problems could be solved. I also found that it solved the problem.

That is, the present invention is a simple heating material made by molding quicklime into a plate shape having countless micropores.

The present invention will be explained below with reference to the drawings. Each drawing shows an embodiment of the present invention.

FIG. 1 is a perspective view showing a simple heating material 1 of the present invention, which is formed into a plate shape having numerous micropores 2 by press molding or the like. Micropore 2
In order to form this, a method may be used in which quicklime is first press-molded into a plate shape and then fine holes 2 are formed on the surface thereof, or it may be press-molded in advance as a perforated plate. Molding of quicklime can be easily done by compression method.

Figures 2A and 2B are cross-sectional views for explaining the method of using the heat generating material of the present invention, and 3 shows a bag made of moisture-proof plastic film, and the inside of the bag is made of two water-impermeable sheets. It is partitioned by a film 4 to create three layers of space, and a plate-shaped quicklime 1 having micro holes 2 is stored in the spaces on both sides, and a bag 3
Both ends are heat sealed at positions 5 and 6. Therefore, the plate-shaped quicklime 1 stored in the bag 3
Because the bag 3 has moisture-proof properties, almost no change occurs even if it is stored for a long time.

Specific examples of the moisture-proof plastic film constituting the bag 3 include laminates such as "polyester film/aluminum foil polypropylene film" and laminates such as "biaxially stretched polypropylene film coated with polyvinylidene chloride/unstretched polypropylene film". Plastic materials can be selected from a wide range of materials as long as they are moisture-proof. Further, since the inner surface of the film is heat-sealed, it is desirable to have a sealant layer such as polypropylene or polyethylene.

Further, as a specific example of the water-impermeable film 4 used as the partition layer, a film made of polyethylene, polypropylene, etc. is suitable from the viewpoint of ease of handling and cost.

Next, to explain how to use the simple heating material, the second
Figure A shows the state before use, and Figure B shows the state during use. That is, an arbitrary part of the upper end of the bag 3 shown in A is cut out as shown by a and a', and after inserting the object to be heated 8 into the center of the bag 3 in B, the part containing the plate-shaped quicklime is cut out. Water necessary for the exothermic reaction is injected into 7 and 7 to generate heat and heat the heated object 8.
heat up.

In this case, by providing the optimal addition water level line in a visually visible part of the quicklime plate 1 having micropores 2 or the outer moisture-proof bag 3, the handling operation becomes extremely simple. That is, FIG. 3 shows a plan view when the optimum water level line 9 is provided on the plate-shaped quicklime 1 having micropores 2, and FIG. 4 shows a plan view when the optimum addition water level line is provided on the outer moisture-proof bag 3. Show the diagram. . Furthermore, if the moisture-proof bag 3 as the outer layer is made of a laminate containing aluminum foil and is opaque, the water level inside can be confirmed.
It is sufficient to create a partially transparent part to enable visual inspection of the inside.

By molding quicklime into a plate shape and having countless micropores for the purpose of this invention, there is no need to make a special bag unlike powdered quicklime, and by providing a large number of micropores in the plank quicklime. When water is poured, water permeates into the quicklime very easily, and heat generation occurs quickly.

Therefore, it is possible to obtain an extremely inexpensive and highly efficient simple heating material using the minimum necessary materials.
It is highly practical.

[Brief explanation of the drawing]

The drawings all show embodiments of the present invention; Fig. 1 is a perspective view of the plate-shaped quicklime having numerous micropores according to the present invention, and Fig. 2A shows the plate-shaped quicklime stored in a bag. Figure 2 (b) is a cross-sectional view showing the state when the object to be heated and water are injected after opening, and Figure 3
The figure is a plan view showing a specific example in which an optimum addition water level line is provided on the surface of a plate-shaped quicklime, and FIG. 4 is a plan view showing a specific example in which an optimum addition water level line is provided on the surface of an outer moisture-proof packaging material. 1... Platy quicklime, 2... Micropores in quicklime, 3
... Moisture-proof film bag making, 4 ... Plastic film for partition, 5, 6 ... Heat-sealing part, 7 ... Water inlet, 8 ... Heated object, 9 ... Addition provided on quicklime Optimum water level line, 10...Additional optimal water level line provided on the outer layer bag.

Claims (1)

[Scope of utility model registration request] A simple heating material made by molding quicklime into a plate shape with countless micropores.