Patent ID: 6527993
Filing Date: 2003-03-04
Classification: B29C,B32B,C08J

Abstract:
A process for producing a crystalline aromatic polyester resin molded foam article, which comprises molding crystalline aromatic polyester resin prepuffs using male and female mold members of a mold assembly comprising the steps of:(1) filling a mold cavity, which is formed by closing the male and female mold members, with the crystalline aromatic polyester resin prepuffs; (2) heating an interior surface of the mold to a temperature not less than (Tg+35) and no greater than (Tg+57)Â°C. (Tg being a glass transition temperature of the crystalline aromatic polyester resin prepuffs), thereby to mold the filled prepuffs; (3) cooling the surface of the mold to a temperature not lower than Tg for a period of at least 20 seconds while holding the molded form article in the mold as it is; and (4) after step (3), cooling the surface of the mold lower than Tg.