Self-heating and adhesive device

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/m2·24 hours by the Lyssy method and wherein the poultice or gel layer is made on the fibrous layer;
• 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.