Patent ID: 6110547
Filing Date: 2000-08-29
Classification: B29C,B29K,B29L,B32B,Y10T

Abstract:
A method of molding an automobile outer trim part, comprising the steps of:providing a film or sheet comprising a colored layer (I) being composed of a propylene polymer composition (A) and having a thickness of 150 to 1000 .mu.m and, laminated thereto, a clear layer (II) being composed of a propylene homopolymer (B) and having a thickness of 10 to 100 .mu.m, through which light is transmitted so that the color of the colored layer (I) is visible,said propylene polymer composition (A) comprising:(a) 50 to 90% by weight of a polypropylene block copolymer (a1) and/or polypropylene random copolymer (a2) exhibiting an intrinsic viscosity (.eta.), as measured in 135.degree. C. decalin, of 2.0 to 4.0 dl/g,(b) 5 to 45% by weight of a polyethylene exhibiting an intrinsic viscosity (.eta.), as measured in 135.degree. C. decalin, of 1.0 to 5.0 dl/g,(c) 5 to 45% by weight of an elastomer composed of a copolymer of ethylene and an .alpha.-olefin having 3 to 10 carbon atoms, said copolymer exhibiting an intrinsic viscosity (.eta.)as measured in 135.degree. C. decalin, of 1.0 to 3.0 dl/g, and(d) 0.1 to 20 parts by weight, per 100 parts by weight of the sum of the components (a), (b) and (c), of a colorant;heating the laminated film or sheet;feeding the heated laminated film or sheet into a metal mold including a pair of dies;closing the metal mold so that the laminated film or sheet is shaped into desired configuration;loosening the closed metal mold or replacing one of the dies by another die; andinjecting a thermoplastic polymer (C) onto the side of the colored layer (I) of the metal mold so that the shaped laminated film or sheet is united with a substrate layer of the thermoplastic polymer (C).