JPH0584318U - Hearth - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the dissipation of heat from the sheet part of the flat bag containing the heat generating material on the side opposite to the body contact side, and to increase the amount of heat received by the body side. The purpose is to provide a firearm. [Structure] A heat-generating material 2 is enclosed in a flat bag 1 made of breathable plastic sheets 4 and 5, and the plastic sheet is placed outside the plastic sheet 4 located on one side of the flat bag 1. A heat ray reflective layer 7 made of aluminum or the like is formed in contact with 4, and at least the outer side of the plastic sheet 5 located on the other side surface side of the flat bag 1 is covered with a nonwoven fabric 9.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a disposable hearth.

[0002]

[Prior Art]

 This type of pocket furnace consists of a flat inner bag made of breathable plastic sheet that contains heat-generating material, and this inner bag is placed in a non-breathable outer bag and hermetically sealed. , Cut the outer bag, take out the inner bag, put it on the underwear (underwear) against the required part of the body, and let the heat-generating material in the inner bag come into contact with air to chemically react (oxidize). The chemical reaction heat is used to warm the body.

[0003]

[Problems to be solved by the device]

 In the conventional pocket furnace, when the flat bag containing the heat generating material is applied to the body and used, the heat of chemical reaction of the heat generating material is released from the body side sheet part of the flat bag to the body side. There was a problem that the heat quantity that the body side receives substantially from the seat section on the opposite side is radiated to the outside through the jacket and so on, and is considerably smaller than the heat quantity held by the heat generating material in the bag.

In view of the above problems, the present invention prevents the heat dissipation from the sheet portion of the flat bag in which the heat generating material is enclosed, which is on the opposite side to the body contacting side, and thus the body side receives the heat quantity. The purpose of the present invention is to provide a pocket hearth that can be increased.

[0005]

[Means for Solving the Problems]

 The pocket furnace of the present invention encloses a heat-generating material in a flat bag made of a breathable plastic sheet, and contacts the plastic sheet on the outside of the plastic sheet located on one side of the flat bag. A heat ray reflective layer of aluminum or the like is formed, and at least the outside of the plastic sheet located on the other side surface side of the flat bag is covered with a non-woven fabric.

[0006]

【Example】

 An embodiment will be described with reference to the drawings. Fig. 1 shows the entire pocket furnace, in which 1 is a flat bag made of a breathable thin plastic sheet. An exothermic material 2 made of powder, wood flour, activated carbon, water, salt, etc. is enclosed. Reference numeral 3 is an air-impermeable outer bag formed of a thin plastic sheet, and the flat bag 1 is enclosed in the outer bag 2 in an airtight state.

The flat bag 1 is formed in a bag shape by heat-sealing the peripheral portions of two rectangular plastic sheets 4 and 5 made of polyethylene or polypropylene, respectively, which are superposed on each other. Then, as shown in FIG. 2, a large number of minute holes 6 are perforated in each of the plastic sheets 4 and 5. A heat ray reflective layer 7 formed by vapor-depositing aluminum on the outer surface of the plastic sheet 4 is formed on the outside of the plastic sheet 4 located on the one surface side of the flat bag 1. The outside of the heat ray reflective layer 7 and the outside of the plastic sheet 5 located on the other surface side of the flat bag 1 are covered with nonwoven fabrics 8 and 9, respectively. The heat ray reflective layer 7 can be made breathable by adjusting the amount of aluminum vapor deposited. Further, the non-woven fabrics 8 and 9 may be adhered at their peripheral edge portions to the peripheral edge portions of the plastic sheets 4 and 5 while being brought into contact with the outer surface of the heat ray reflective layer 7 and the outer surface of the plastic sheet 5, respectively.

When using the pocket furnace having the above structure, first, the flat bag 1 hermetically sealed in the outer bag 2 is taken out, and the heat generating material 2 is exposed to air. At this time, air is supplied to the heat generating material 2 through the nonwoven fabric 9 and the plastic sheet 5 on the side opposite to the side where the heat ray reflective layer 7 is present. In this way, while the heat generating material 2 is exposed to air to cause a chemical reaction, the side surface of the flat bag 1 opposite to the side having the heat ray reflective layer 7, that is, the non-woven fabric 9 is applied to the body for use. ..

During the use of this pocket furnace, the heat of the chemical reaction heat of the heat-generating material 2 enclosed in the flat bag 1 that is about to be dissipated to the side opposite to the body side is absorbed by the heat ray reflection layer 7 by the body. It is reflected to the side. Therefore, most of the heat quantity held by the heat generating material 2 is effectively released to the body side.

In the embodiment described above, the heat ray reflective layer 7 is formed by vapor-depositing aluminum on the outer surface of the plastic sheet 4. However, instead of such an aluminum vapor-deposited layer, the heat ray reflective layer is formed by an aluminum foil. May be. In the case of using this aluminum foil, the aluminum foil can be used as the exterior material of the plastic sheet 4 located on one side of the pocket furnace, and therefore the nonwoven fabric 8 provided on this side can be omitted.

Further, if an adhesive layer capable of adhering to underwear is provided on the outer side of the non-woven fabric 9 that covers the plastic sheet 5 on the side opposite to the side where the heat ray reflective layer 7 is present, a pocket heater can be worn underneath. It can be easily fixed and used in the required position above.

Further, in the examples, as the air-permeable plastic sheet, a single-layer sheet having micropores for providing air-permeability was used, but a plastic coating layer for heat welding was provided on the inside. It may be a sheet having a two-layer structure. The plastic coating layer is, for example, a coating layer made of EVA (ethylene-vinyl acetate copolymer). In the case of the above-mentioned two-layer structure, a plastic coating layer for heat welding may be formed on one surface of a plastic sheet having no air permeability, and then a perforation process of micropores for imparting air permeability may be performed.

[0013]

[Operation and effect of the device]

 The pocket furnace of the present invention encloses a heat-generating material in a flat bag made of a breathable plastic sheet, and forms a heat ray reflective layer on the outside of the plastic sheet located on one side of the flat bag, At least the outer side of the plastic sheet located on the other side of the flat bag is covered with a non-woven fabric.Before use, it is hermetically sealed in an outer bag made of a non-breathable plastic sheet before use. At this time, remove the flat bag from the outer bag and let the heat generating material come into contact with air. Air is supplied to the heat generating material through at least the non-woven fabric on the side opposite to the side having the heat ray reflective layer and the breathable plastic sheet.

In using the pocket furnace, the flat bag is used with the side opposite to the side having the heat ray reflective layer being the body side. During this use, of the heat of the chemical reaction of the heat generating material, the heat that is going to be dissipated to the side opposite to the body side is reflected to the body side by the heat ray reflective layer. Therefore, the amount of heat received by the body side is increased as compared with the conventional product that does not have the heat ray reflective layer. Therefore, if the amount of heat generating material is the same, it can be used as a highly efficient pocket furnace that receives a large amount of heat on the body side. If it is not necessary to increase the amount of heat received on the body side, the amount of heat generating material can be reduced. The cost can be reduced.

When the heat ray reflective layer is formed by vapor-depositing aluminum on the plastic sheet, breathability can be provided by adjusting the vapor deposition amount of aluminum.

When the heat ray reflective layer is formed of aluminum foil, the aluminum foil may be used as an exterior material for a pocket furnace, and the non-woven fabric on this side may be omitted. In addition, this aluminum foil can also be provided with air permeability by processing micropores.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional perspective view of a pocket furnace according to the present invention.

FIG. 2 is an enlarged vertical sectional view of a central portion of the flat bag in the pocket furnace of FIG.

[Explanation of symbols]

 1 flat bag 2 heat generating material 4 plastic sheet 5 plastic sheet 6 micropores 7 heat ray reflection layer 8 non-woven fabric 9 non-woven fabric

Claims (5)

[Scope of utility model registration request] 1. An exothermic material is enclosed in a flat bag made of a breathable plastic sheet, and the outer surface of the plastic sheet positioned on one side of the flat bag is in contact with the plastic sheet, such as aluminum. And a heat ray-reflecting layer formed on the outer surface of the plastic sheet located on the other side surface of the flat bag, which is covered with a non-woven fabric. 2. The pocket furnace according to claim 1, wherein the heat ray reflective layer is formed by depositing aluminum on the plastic sheet. 3. The pocket furnace according to claim 1, wherein the heat ray reflective layer is formed of an aluminum foil. 4. The pocket furnace according to claim 1, wherein an adhesive layer for underwear or the like is provided on the outer side of the non-woven fabric that covers the plastic sheet on the side opposite to the side on which the heat ray reflective layer is provided. 5. The pocket furnace according to claim 1, wherein the outside of the heat ray reflective layer is also covered with a non-woven fabric.