Patent ID: 6358459
Filing Date: 2002-03-19
Classification: B29C,B29K,B29L

Abstract:
A method for the manufacture of molded bodies from polymer foam particles by shaping and welding together the foam particles using microwave energy, the method comprising the steps of:a) placing foam particles in a gas-tight, foil-like bag; b) disposing said bag with said foam particles on or in a shaping mold; c) evacuating said bag on or in said mold to shape said bag with said foam particles into a dense particle package to form a molded body; and d) irradiating said dense partial package with microwave energy while maintaining partial pressure in said bag to melt together surfaces of the foam particles and to melt said bag together with said foam particles, wherein said bag is made from a plastic polymer having a melting temperature in a melting temperature range of said foam particles.