Patent ID: 7621110
Filing Date: 2009-11-24
Classification: A61F,Y10T

Abstract:
1. A process for preparing a self-heating and adhesive device comprising: 1) providing a gas-permeable sheet layer or a composite of a gas-permeable sheet layer and an unwoven fabric layer; 2) providing a sheet composite comprising a gas-impermeable sheet layer, an adhesive layer, and a releasing paper in this order; 3) bonding or heat-sealing the gas-permeable sheet layer and the gas-impermeable sheet layer to make a pouch having an opening; 4) stuffing an exothermic composition into the pouch; 5) closing the opening of the pouch by bonding or heat-sealing; 6) preparing a composite of a support and a poultice or gel layer whose surface is covered with a releasing sheet, wherein the support comprises a fibrous layer only or a gas-impermeable sheet and a fibrous layer and has a moisture permeability within the range of 0 to 3,000 g/m 7) peeling off the releasing paper; 8) bonding an outer surface of the support to the adhesive layer; and 9) cutting off one self-heating and adhesive device.