Extruder for manufacture of shaped bodies from plastics-filler m

Details Extruder for manufacture of shaped bodies from plastics-filler m Extruder for manufacture of shaped bodies from plastics-filler m

1998-03-12

2000-08-22

Pyon, Harold

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Temperature control

425204, 4253791, B29C 4780, B29C 4786

Patent

active

061062634

ABSTRACT:
An extruder forms shaped bodies from plastics-filler mixtures having a filler content of more than 50% by volume. The extruder comprises a product feed device, an outer mouthpiece and two barrels arranged coaxially between the product feed device and the outer mouthpiece. The first barrel (input cone) having an inside wall provided with grooves essentially parallel to the longitudinal extent of the barrel is connected with the product feed device. The second barrel (output zone) is connected with the outer mouthpiece. A screw arranged in the first barrel conveys material into the second barrel. Separate tempering arrangements for the first barrel, for the second barrel and for the mouthpiece control the desired operation temperatures in the extruder. Preferably, the extruder additionally includes a mandrel connected with the screw and arranged in the second barrel.

REFERENCES:
patent: 4365946 (1982-12-01), Anders
patent: 4798696 (1989-01-01), Boen Per
Patent Abstracts of Japan 05042582 Furukawa Electric Co. Ltd., Kojima Shinji, Feb. 23, 1993.

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