Simple warmth-retaining article and a warmth-retaining cloth
A simple warmth-retaining article comprising a heat insulating material, a cover material and an exothermic article that generates heat in the presence of air and that is inserted between the heat insulating material and the cover material, and a warmth-retaining cloth formed by connecting a plurality of the simple warmth-retaining articles in a plane-like state.
1. A warmth-retaining cloth useful for emergency rescue comprising a plurality of simple warmth-retaining articles connected together in a plane-like state, wherein the simple warmth-retaining articles comprise a heat insulating material, a cover material and an exothermic article that generates heat in the presence of air and that is inserted between the heat insulating material and the cover material, the heat insulating material being a nonwoven fabric or a resin foam having a thickness of 0.2 to 20.0 mm, a fabric weight of 30 to 700 g/m 2 and a void ratio of 40 to 95%, and the cover material being a nonwoven fabric or a fabric having a thickness of 0.05 to 0.5 mm and a fabric weight of 20 to 100 g/m 2 , wherein the exothermic article is contained in a packaging bag, and the packaging bag has continuous lattice-like partitions, the warmth-retaining cloth has a blanket-like shape and has dimensions of 25 to 160 cm (width) and 30 to 220 cm (length), and is packaged and sealed within a non-air-permeable film external bag while the warmth-retaining cloth is in a deaerated or deoxidized state.
2. The warmth-retaining cloth according to claim 1 , wherein edges of the heat insulating material and those of the cover material are bonded together by hot melt sticking or sewing.
3. The warmth-retaining cloth according to claim 1 or 2 , wherein the nonwoven fabric of the cover material is a nonwoven fabric of a thermoplastic synthetic filament yarn having a partial thermocompression ratio of 3 to 35%.
4. The warmth-retaining cloth according to claim 1 , wherein the fabric of the cover material is a woven fabric, a knitted fabric, a cheesecloth or an extruded mesh or net.