Steam-generating warming article
AssigneeKao Corporation
InventorsMichihito Igaki, Koichi Okisaka, Ichiro Sakamoto
Life of this patent
Estimating the term…
Abstract
A steam-generating warming article 1 which has a steam generating element 2 making use of chemical energy and is adapted to supply steam while in contact with a human body. The article 1, while in contact with the body, maintains the skin surface temperature at 38° to 49° C. for 3 to 15 hours and cumulatively generates 0.5 to 12 mg/3 hr·cm2 of steam. The steam-generating warning article 1 is used to improve the human body's physiology. The steam generating element 2 is preferably a heat generating sheet prepared by incorporating an aqueous electrolyte solution into a molded sheet containing an oxidizable metal, a reaction accelerator, and a fibrous material.
Claims14
A steam-generating warming article comprising a steam generating warming sheet which is adapted to supply steam while in contact with the surface of the body,
- wherein said steam generating warming sheet comprises a heat generating sheet having a large number of holes or cuts and a holder for holding said heat generating sheet, said heat generating sheet being a molded sheet comprising an oxidizable metal, a reaction accelerator, and a fibrous material, having incorporated therein an aqueous electrolyte solution, and wherein said heat generating sheet generates heat upon contact with air,
- wherein the molded sheet contains 60% to 90% by weight of the oxidizable metal, 5% to 25% by weight of the reaction accelerator, and 5% to 35% by weight of the fibrous material, and
- wherein the heat generating sheet comprises
- 40 to 80 parts by weight of the aqueous electrolyte solution containing 1% to 15% by weight of an electrolyte per 100 parts by weight of the molded sheet
- said holder having air permeability in at least a part thereof to allow steam to be released outside through said holder, and
- an air permeable part of said holder having a water vapor transmission rate of 300 to 2000 g/m2·24 hr (JIS Z0208, 40° C. 90% RH).
Dependencies are inferred from the claim text.