Method of forming a plastic plate

Details Method of forming a plastic plate Method of forming a plastic plate

1991-04-10

1992-04-28

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Orienting or aligning solid particles in fluent matrix material

264171, 4251311, 4251335, 425462, B29C 4706

Patent

active

051086760

ABSTRACT:
A method of forming a plastic plate includes melt extruding a thermoplastic resin containing a flake-like inorganic filler with an extruder into a former while a back pressure is applied to the extruded thermoplastic resin to thereby form it into a plate like body. The molten resin is extruded from at least one extruder into a channel or channels corresponding to the extruders which are formed in an adapter. The molten resin is fed to a cavity having at least one partition plate, formed in the former which is communicatively connected to the adapter so that a molten resin stream or streams introduced from the channel or channels are respectively divided and developed into at least two plate like bodies, and the plate-like bodies are merged in an overlapping state, followed by heat-bonding them.

REFERENCES:
patent: 3308222 (1967-03-01), Kovacs
patent: 3320636 (1967-05-01), Corbett
patent: 3551545 (1970-12-01), Overdiep
patent: 3592882 (1971-07-01), Mortia
patent: 3918867 (1975-11-01), Beyer
patent: 4426344 (1984-01-01), Dinter et al.
patent: 4880370 (1989-11-01), Krumm
patent: 4927675 (1990-05-01), Adams et al.

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