Method and apparatus for the treatment of plastic materials

摘要

Expanded or foamed plastic material, such as expanded polystyrene, is fed into a hopper containing an auger which carries blades for cutting the plastic material into pieces and for feeding it into a chamber containing a vertically reciprocable piston and a horizontally reciprocable piston. The two pistons operate sequentially to effect compression of the plastic material and to feed the compressed material into the entry end of a horizontal chute. A hydraulically operated main ram is movable along the chute to effect additional compression of the plastic material and to displace it along the chute for discharge.