Fluid exothermic composition, exothermic device made thereof and manufacturing method of exothermic device
AssigneeKabushiki Kaisha Genchi Kenkyusho
InventorAkio Usui
Life of this patent
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Abstract
The present invention relating to an exothermic decomposition has, as essential components, a water absorptive polymer and/or tackifier, carbon component and/or metal chloride and features that the product is as a whole ink-like or cream-like.
Claims3
A method of manufacturing an exothermic device comprising a step of having an ink-like or cream-like exothermic composition on a film or sheet substrate and then having said composition covered by a viscosity of the ink-like or cream-like exothermic composition and the resulting laminate is stamped out, and each stamped-out laminate has either side or at least a part thereof gas-permeable.
A method of manufacturing an exothermic device comprising a step of having two layers of film or sheet, stamping these with the exothermic sheet interposed therebetween and stamping is done upon completion or some time after incorporation of a somewhat larger in size of the stamped out portion, and simultaneously with stamping or after stamping sealing the aforementioned two layers of film or sheet.
Dependencies are inferred from the claim text.