Entgasung von Polyurethanschaum

摘要

Method and device for degassing solid foamed plastic (16), in particular polyurethane foam, by simultaneously grinding and compacting that foam in a screw compactor which debouches (25) in a chamber (8) closable for gases in which the pressure can optionally be controlled. Screw compactor with a screw blade (11) provided partially with a cutting edge (28) and a channel through the wall of the jacket oriented inclining rearward to the outside and connected via a line to a discharge system.