Extrusion system and process for minimizing color change times i

Details Extrusion system and process for minimizing color change times i Extrusion system and process for minimizing color change times i

1997-11-05

1999-11-09

Soohoo, Tony G.

Agitating

Rubber or heavy plastic working

With specified feed means

B29B 724

Patent

active

059800984

ABSTRACT:
An extrusion system includes a main extruder and a secondary injection extruder. Both extruders are connected via a three-way valve. The main extruder has a mixing section downstream of the junction point with the secondary injection extruder. An accelerated switch between molding masses with different colors can be made by switching the three way valve.

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Patent Abstracts of Japan, vol. 17, No. 623 (M-1511), Nov. 17, 1993, JP 05 192982, Aug. 3, 1993.
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Patent Abstracts of Japan, vol. 17, No. 8 (M-1350), Jan. 7, 1993, JP 04 239623, Aug. 27, 1992.

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