A machine for the production of articles of foamed plastics material in a two-stage process has a first work station for a hot preforming stage and a second work station for a following cold forming stage. Each station has a two-part mould, the second mould part of each mould being movable towards and...http://www.google.es/patents/US4106884?utm_source=gb-gplus-sharePatente US4106884 - Production of articles of foamed plastics material
Production of articles of foamed plastics material
