Patent ID: 6010651
Filing Date: 2000-01-04
Classification: B29C

Abstract:
A latex leather sheet fabrication method comprising the steps of:(a) pre-heating, in which natural latex is pre-heated to about 30.degree. C.;(b) flow mixing, in which pre-heated natural latex is mixed with a chemical solution (which contains oleic acid, sulfur and zinc oxide powder) by flow mixing for about 1.about.3 hours;(c) foaming, in which air is forced into the latex mixture thus obtained, enabling the latex mixture to be mixed with forced air into a foamed viscous liquid;(d) shape-forming, in which the foamed viscous liquid thus obtained is applied to a shape forming implement, which is heated to about 50.degree. C., enabling the foamed viscous liquid to be gradually hardened from the bottom side toward the top side, forming into a hardened foamed sheet material, and at the same time the surface temperature of the applied foamed viscous liquid is cooled down by a plain cutter;(e) heating and drying, in which the hardened foamed sheet material thus obtained is heated in a heating oven at different temperatures and then dried into a foamed leather sheet through a drying process; and(f) cooling, in which the well dried foamed leather sheet is cooled down.