| 摘要 |
PURPOSE:To obtain a leather-like molded article close to natural leather characteristics, by heating leather powder in steam, drying the leather powder into a water content in a specific range, grinding into a specific fine particulate state, blending the fine powder with a thermoplastic resin containing gelatin and molding into a sheetlike state. CONSTITUTION:First a leather material is heated in steam, dried into <=4% water content in the leather and ground into a fine particulate state having particle diameters passing through 30 mesh sieve free from entanglement. 70-10wt% of the leather powder is blended with 30-90wt% thermoplastic resin compound (e.g. vinyl chloride, etc.) containing 5-30wt% gelatin (to promote fluidity) by weight ratio, further mixed with a foaming agent such as ammonium carbonate, etc., and molded into a formed sheet by calendering rolls, etc. A leather-like sheet molded article functionally almost close to natural leather is obtained by using proper moistening, volatilization and permeating function through leather powder, gelatin characteristics and cellular structure.
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