PRESSURE-DEPENDENT FOAM MOULDING OF POLY(METH)ACRYLIMIDE PARTICLES IN CLOSED MOULDS FOR PRODUCING RIGID FOAM CORES

摘要

The invention relates to a method for producing foam-moulded poly(meth)acrylimide (P(M)I) cores, in particular polymethacrylimide (PMI) cores, which can be used in automobile or aircraft construction, for example. The method is characterized in that a polymer granulate or powder preheated under pressure is filled into a pressing mold while still being under pressure, where same undergoes foaming as the pressure is relieved. The method is characterized in particular in that a preferably double-shelled pressing mold is optionally used for both heating and cooling the granulate and the hard foam core made therefrom.