FOAMED PARTICLE FOR BIODEGRADABLE LOST PATTERN, AND MOLDING FOAMED BODY

摘要

PROBLEM TO BE SOLVED: To obtain a molding foamed body capable of simplifying a molding/working process and improving cast surface roughness, and also having an excellent shape-keeping of a pattern being a new problem when an aliphatic polyester is used. SOLUTION: The molding process is facilitated by using biodegradable foamed particles and the molding foamed body having the density in the range of 0.0301-0.0500 g/cm3. The shape-keeping of the lost pattern under high temperature surroundings and the smoothness of the cast surface produced as the product are excellent by resolving the problem of the cutting-off waste. COPYRIGHT: (C)2004,JPO