Patent ID: 6010656
Filing Date: 2000-01-04
Classification: B29C,Y10T

Abstract:
A method of forming a light-weight, fiber-reinforced thermoplastic resin product, comprising;melting and kneading a molding material, which comprises fiber-containing thermoplastic resin pellets (A) having a fiber content of from 20 to 80% by weight, the fibers being oriented in parallel with each other and having a length of from 2 to 100 mm, or comprises a mixture of the fiber-containing thermoplastic resin pellets (A) and a thermoplastic resin except (A), the fiber content of the mixture being from 5 to 80% by weight;then injecting the melted resin into the cavity of a mold as so closed that the volume of its cavity is smaller than that of the final molded product; andbefore or after the resin injection is completed, opening the mold until the volume of its cavity is equal to that of the final molded product.