Method of manufacturing automotive interior materials for pre-coated skin material and automotive interior materials

摘要

PPROBLEM TO BE SOLVED: To provide a hot-melt adhesive having excellent heat resistance and used for a precoated surface material for a vehicular interior material, giving a precoated adhesive surface with no viscosity to dispense with the use of a releasing paper and formable and bondable without heating a molded article to make it possible to substantially simplify adhering process of the surface and the molded article, and to provide a method of manufacturing a vehicular interior material with the precoated surface material used therein. PSOLUTION: The precoated surface material for a vehicular interior material is formed by applying the hot-melt adhesive to the back surface of the vehicular interior surface material in advance. The adhesive including, as essential components thereof, amorphous-poly (-olefin) (A) of which melt viscosity is in a range of 500 to 100,000m(Pa s)/190C, a tackifier resinr (B) of which softening point according to a ring and ball method is 110C or higher, and a polypropylene system wax (C) of which melting point is 120C or more. The weight ratio of (A) and (C) is 100/50 to 100/100. Since the precoated interior material for a vehicular interior that allows remarkable simplification of the bonding step for manufacturing, the vehicular interior material has good adhesiveness to an olefin material and excellent heat resistance as well as being non-solvent, it is industrially useful. PCOPYRIGHT: (C)2005,JPO&NCIPI