CPC Subgroup
C08J 9/232 by sintering expandable particles
Full Title
Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof (mechanical aspects of shaping of plastics or substances in a plastic state for the production of porous or cellular articles B29C) > After-treatment of expandable particles; Forming foamed products > Forming foamed products > by sintering expandable particles