Disposable body warmer
AssigneeMycoal Warmers Company Limited
InventorAkio Usui
Life of this patent
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Abstract
A disposable body warmer comprising a flat bag and in a flat form having a thickness of 2 to 5 mm, comprising a heat generating agent comprising iron powder as a main ingredient and mixed therewith 9 to 11% by weight of a water-retaining agent, 18 to 22% by weight of water, an oxidation promotor and sodium chloride. The flat bag is provided with an air-permeable surface having an air permeability per unit of 5,000 to 10,000 sec/100 cc so as to bring about a reduction in the pressure accompanying oxidative heat generation of the heat generating agent packed in the flat bag. The other surface of the flat bag is provided with a nontransferable self-adhesive layer.
Claims15
A disposable body warmer comprising a flat bag having an air-permeable first surface having an air permeability per unit time of 5,000 to 10,000 sec/100 cc so as to bring about a reduction in the pressure accompanying oxidative heat generation of a heat generating agent packed in said flag bag, said heat generating agent comprising iron powder as a main ingredient and, mixed therewith, 9 to 11% by weight of a water-retaining agent, 18 to 22% by weight of water, an oxidation promoter and sodium chloride and being packed in a flat form having a thickness of 2 to 5 mm in said flat bag, and a nontransferable self-adhesive layer being attached to a second surface of said flat bag.
Dependencies are inferred from the claim text.