Patent ID: 6165407
Filing Date: 2000-12-26
Classification: B29C,B29L

Abstract:
A method of manufacturing a molded article of a thermoplastic resin by means of a mold assembly for molding a thermoplastic resin, said mold assembly comprising:(a) a first mold member and a second mold member for manufacturing the molded article of a thermoplastic resin,(b) an insert block provided in the first mold member, said insert block constituting part of a cavity, having a thickness of 0.1 mm to 10 mm and being formed of a material having a thermal conductivity of 2.times.10.sup.-2 cal/cm.multidot.sec.multidot..degree.C. or less, and(c) a molten thermoplastic resin introduction portion provided in the second mold member,wherein an insert block covering portion is formed in the second mold member, andwhen the first mold member and the second mold member are separated from each other, the insert block is positioned in the first mold member and the insert block covering portion is positioned in the second mold member, andwhen the first mold member and the second mold member are clamped to each other,(A) a clearance between the insert block and the insert block covering portion is equal to, or less than, 0.03 mm, and(B) an amount of overlapping of the insert block and the insert block covering portion is equal to, or greater than, 0.5 mm,said manufacturing method comprising;introducing a molten thermoplastic resin into the cavity through the molten thermoplastic resin introduction portion, andthen, cooling and solidifying the thermoplastic resin to manufacture the molded article.