Method and apparatus for the treatment of plastic materials

Details Method and apparatus for the treatment of plastic materials Method and apparatus for the treatment of plastic materials

1995-04-11

1996-02-27

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

With liberating or forming of particles

264120, 264321, 264DIG69, 425135, 425289, B29C 4314

Patent

active

054946263

ABSTRACT:
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.

REFERENCES:
patent: 5059372 (1991-10-01), Klais
patent: 5198160 (1993-03-01), Chiu
patent: 5204040 (1993-04-01), Chang
patent: 5286321 (1994-02-01), Fuss
patent: 5424026 (1995-06-01), Tohbo et al.

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