Filtering system for use in coextrusion apparatus and method of

Details Filtering system for use in coextrusion apparatus and method of Filtering system for use in coextrusion apparatus and method of

1987-06-30

1989-02-14

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

With prevention of equipment fouling accumulations or deposits

210314, 210316, 210446, 264171, 4251331, 4251335, 425197, 425198, 425199, B29C 4704, B29C 4756, B29C 4768, D01D 110

Patent

active

048045101

ABSTRACT:
A filtering system for use in coextrusion apparatus, and particularly for removing carbon particles from a core extrudate of thermally degradable barrier material which has been preencapsulated with a preencapsular material. The filter includes a casing and a frame mounted to the casing. A coarse filter screen through which the component streams can flow is also provided. The coarse filter screen is mounted to the frame and is composed of a web of woven strands having a sufficiently small diameter so as to permit the preencapsulated core extrudate to pass through and emerge from the coarse filter screen without substantial mixing of the barrier material and the preencapsular material. The fine filter screen is supported by the coarse filter screen upstream of the coarse filter screen.

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patent: 4611987 (1986-09-01), Hahn et al.
patent: 4629650 (1986-12-01), Kataoka

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