Patent ID: 6042757
Filing Date: 2000-03-28
Classification: B29C

Abstract:
A method for injection-molding a molding material, which method comprises:(a) injecting a molding material comprising a thermoplastic resin and in inorganic filler from an injection unit into a cavity of a mold unit to form a molded product;(b) subjecting said molded product to a primary cooling in said cavity;(c) removing said molded product from said mold unit using chucks as a holding means while circulating a heating medium through said chucks to control a difference between a temperature of said mold unit and a temperature of said holding means to 0 to 50.degree. C.; and(d) subjecting said molded product to a secondary cooling while holding said molded product by said chucks,wherein the ratio of the number of said chucks to the number of said cavities is set to a value not less than a ratio of an operation time of each chuck to an operation time of said mold unit.