Has the surface by surface formation manner and that manner in the synthetic resin make formation item the synthetic resin make formation item

摘要

PURPOSE: To enhance appearance such as decoration simultaneously with synthetic resin molding work by forming a strong non-releasable coating surface of patterns composed of fine particles with a large particle size of a fine particle substrate with a small particle size. CONSTITUTION: Pattern parts 10 becoming recessed parts of the non-releasable coating surface ready to be formed on the surface of a synthetic resin molded product, for example, a non-releasable coating surface 3 of grain patterns in the upper layers of iron oxide particles 9 are reversed and transferred in the inner wall 5 of a molding form 4. Therefore, the pattern parts are bonded to the side wall of parts becoming protruding parts 11 and a foamable synthetic resin 6 is injected or synthetic resin 6' is introduced under pressure in a molten state to be molded to cure the synthetic resins 6, 6'. Therefore, mixed fine particles 7 wherein light brown iron oxide particles 9 with a small particle size are dispersed in the wood grain part 12 of an upper layer and black carbon particles 8 with a large particle size are dispersed in the pattern parts 10 formed on the surface thereof are taken in the surface of the synthetic resin molded product 1 molded by the molding form 4.