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Exothermic composition and exothermic article using composition, and method for producing exothermic article

A heat-generating composition and heat-generating body technology, applied in chemical instruments and methods, heat-generating devices, heat-exchanging materials, etc., can solve the problems of composition functions such as deterioration of heat-generating performance, high viscosity, and deterioration of fluidity, etc., to prevent Production loss and non-uniformity and quality failure, prevention of deterioration, excellent effects in shape retention and adhesion

Inactive Publication Date: 2004-04-21
MYCOAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0029] However, in the case where the components of the heat-generating composition and water are mixed with a large amount of dispersion stabilizer, the slurry of the components of the heat-generating composition thus formed has a large viscosity, so that fluidity deteriorates, and the composition Functions such as heat generation performance are considered to deteriorate

Method used

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  • Exothermic composition and exothermic article using composition, and method for producing exothermic article
  • Exothermic composition and exothermic article using composition, and method for producing exothermic article
  • Exothermic composition and exothermic article using composition, and method for producing exothermic article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0458] figure 1 It is a cross-sectional view of the heating element 1 of Example 1 of the present invention. A mold not shown in the figure was set on the base material 3 having dimensions of 85 mm in length and 65 mm in width, the exothermic composition 2 was placed in the mold, and a mold not shown in the figure was used. The scraper plate is molded by through-die molding to laminate the heat-generating composition 2 on the base material 3, which is also covered with a film-shaped covering material 4 having substantially the same size as the base material 3, sealing its periphery 8, sealing The width was 7 mm, and the heating element 1 was obtained.

[0459] Heat generating composition 2 is formed by mixing a stabilizer for preventing water separation with a heat generating composition containing metal powder as a main component, and 6 parts by mass of sodium chloride (NaCl) as a metal chloride, 50 parts by mass of water, As carbon components, 5 parts by mass of activated ...

Embodiment 2

[0489] In the same manner as in Example 1, by using the exothermic composition obtained in Example 1 to obtain Figure 5 The heating element 1 shown in , only changes the base material and cover material.

[0490] As the base material 3, an air-impermeable laminated film is used which is a release film 3I formed of a polyester film with a thickness of 100 μm, an adhesive layer 3H with a thickness of 30 μm, and a polyethylene film with a thickness of 50 μm from the exposed surface. A composite laminated nonwoven fabric 3C of a film 3A, a polyethylene resin 3E having a thickness of 40 μm, and a water-absorbent cotton nonwoven fabric is formed.

[0491] As the covering material 4, a laminated film prepared in the following manner was used: a polyester nonwoven fabric 4A (30 g / m in unit weight) having kneaded therein fibers of an anion-generating agent containing feldspar as a main component was used. 2 ) and polyethylene porous membrane 4D with a thickness of 40 μm, in this orde...

Embodiment 3

[0497] Figure 6It is a sectional view of the heating element 1 according to the third embodiment of the present invention. The heat generating body 1 is formed in such a manner that the heat generating composition 2 having the same composition as in the preceding examples has a water-absorbing polymer (without cyclic anhydride and co-derived acid) uniformly spread on both surfaces thereof. and salt N-vinylacetamide polymer cross-linked product) 7 and 7A, the amount of water-absorbing polymer is 0.5 parts by mass per surface, and this exothermic composition 2 is laminated on a film-shaped base material 3, on which It was covered with a film-shaped covering material 4 having a web-shaped hot-melt adhesive 4G provided thereon, and then its periphery 5 was sealed by heat sealing with a sealing width of 7 mm.

[0498] That is, the heating element 1 of this example has the same shape as the heating element 1 of Example 1, which is a rectangular shape with a length of 85 mm and a w...

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Abstract

It relates to a heat-generating composition having such dispersion stability that withstands continuous molding, and has excellent drainage property, excellent heat-generating characteristics, excellent molding property and excellent shape retaining property, without becoming viscous, and relates to a heat-generating body using the same and a process for producing the heat-generating body. It contains, as essential components, a heat-generating substance generating heat upon reaction with oxygen, a carbon component, an oxidation promoter and water, characterized in that the composition further contains a water separation-preventing stabilizer in a proportion of from 0.001 to 0.25 part by mass per 100 parts by mass of the heat-generating composition, and has a water mobility value of from 7 to 40 and a separation degree of from 0 to 30.

Description

field of invention [0001] The present invention relates to an exothermic composition containing an exothermic substance generating heat upon reaction with oxygen, a carbon component, an oxidation accelerator, and water as essential components mixed with an ultra-trace amount of a stabilizer for preventing water separation, Thus the composition has dispersion stability against continuous molding, and has excellent drainage, excellent heat generation, excellent moldability and excellent shape retention without becoming sticky, the present invention It also relates to a heat generating body using the composition and a method for preparing the same. Background technique [0002] Representative examples of applications of exothermic substances that generate heat upon reaction with oxygen include powder exothermic compositions used in exothermic bodies such as disposable body warmers. [0003] As an exothermic composition containing a metal as an essential component, an example t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F7/08A61F7/03C09K5/16C09K5/18F24V30/00
CPCC09K5/18A61F2007/038A61F2007/0098A61F7/034F24J1/00F24V30/00
Inventor 臼井薰相田道雄酒卷由和中村正人木村久雄百百寿浩
Owner MYCOAL
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