Heat generation tool

A device and heat generation technology, which can be applied in the directions of heating devices for therapeutic treatment, cooling devices for therapeutic treatment, contraceptive devices, etc. problem, achieve excellent warming effect, eliminate tightness, and warm the skin

Inactive Publication Date: 2015-03-04
KOBAYASHI PHARMA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In this way, a heating device that can be directly attached to the skin and improves the feeling of use has been reported, but there is a problem in Patent Document 1 that it is easy to feel a cold feeling when the heating tablet is attached to the skin or after peeling it off the skin. , in addition, it takes a long time until it is warm
In addition, Patent Document 2 has the following problems: since the water vapor generating composition is difficult to adhere to the skin, it is difficult to feel the warming feeling unless the heat generation temperature of the water vapor generating composition is raised higher, and it is difficult to apply the medicine Or when the cosmetic ingredients are efficiently supplied to the skin and the water vapor generating composition is removed from the skin, the heat of vaporization of water will take away heat from the skin, so it is easy to feel the cold feeling and the warming effect will not last

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0109] Liquid paraffin (manufactured by Matsumura Petroleum Research Institute, boiling point at 1 atm: 100°C or higher, specific heat at 20°C: 1.88 J / g·K) as an oil component and polystyrene-polyethylene as a base - A polybutylene-polystyrene copolymer (SEBS) (manufactured by Kraton Polymers) was dissolved to prepare an adhesive layer 1 containing 80% by weight of liquid paraffin and 20% by weight of SEBS. The specific heat of the adhesive layer 1 was 1.96 J / g·K at 20°C.

[0110]On the other hand, iron powder (manufactured by DOWA IP CREATION CO., LTD., trade name DKP, average particle diameter of 100 μm), water, activated carbon (FUTAMURA CHEMICAL CO., LTD., trade name Taihe activated carbon, average particle diameter of 50 μm), vermiculite (average particle diameter is about 500 μm), water-absorbent resin (acrylic acid polymer partial salt cross-linked product, average particle diameter is 250 μm), and salt are mixed to prepare iron powder containing 55% by weight, water 25...

Embodiment 2

[0113] As the oil component, instead of liquid paraffin, silicone oil (manufactured by Shin-Etsu Chemical Co., Ltd., boiling point at 1 atm: 100° C. or higher, specific heat at 20° C.: 1.67 J / g·K) was used instead of liquid paraffin. In the same manner as above, an adhesive layer 2 containing 80% by weight of silicone oil and 20% by weight of SEBS was prepared. In addition, using the aforementioned heat generating device 1, a heat generating device including an adhesive layer 2 was obtained in the same manner. It should be noted that, here, the thickness of the adhesive layer 2 is about 200 μm.

Embodiment 3

[0115] Except that the content of liquid paraffin in the adhesive layer was set to 60% by weight, and SEBS was set to 40% by weight, the same operation as in Example 1 was carried out to prepare liquid paraffin containing 60% by weight and 40% by weight. Adhesive layer 3 of SEBS. The specific heat of the adhesive layer 3 was 1.86 J / g·K at 20°C. Moreover, it carried out similarly to Example 1, and obtained the heat generating device provided with the adhesive layer 3. It should be noted that, here, the thickness of the adhesive layer 3 is about 200 μm.

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Abstract

Provided is a heat generation tool which is capable of easing sensation of coldness when applying to the skin and warming the skin efficiently, supplies oil effectively to the skin, and eases sensation of coldness after peeling from the skin so as to provide a high heating effect even after use. This heat generation tool comprises an adhesive layer, the specific heat at 20°C of the adhesive layer being less than 3 J / g.K. The adhesive layer contains a base and an oil with a specific heat at 20°C of less than 3 J / g.K and a boiling point at 1 atmosphere of 100°C or more, the oil content in the adhesive layer being 30 to 90 weight%.

Description

technical field [0001] The present invention relates to a heat generating device provided with an adhesive layer. More specifically, the present invention relates to the relief of the cold feeling when the adhesive layer is attached to the skin, the high warming effect, the effective supply of oil components to the skin, and the improvement of the cold feeling after the adhesive layer is peeled off from the skin. Mild heating appliance. Background technique [0002] For a long time, heating appliances such as disposable warming patches have been used as body heat preservation appliances and thermotherapy devices. In particular, disposable warm patches are frequently used because they are excellent in portability, safety, simplicity, etc., and are also inexpensive. A heat-generating composition that generates heat in the presence of air is used in a general disposable warm patch, and a heat-retaining effect is exhibited by the principle of heat generation. In addition, it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F7/03
CPCA61F2007/0226A61F7/03A61F2007/0244A61F7/034A61F2007/0261A61F2007/0263
Inventor 西冈大辅田中广通
Owner KOBAYASHI PHARMA CO LTD
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