Filter exchange device for an extrusion molding machine

Details Filter exchange device for an extrusion molding machine Filter exchange device for an extrusion molding machine

1988-05-20

1989-11-14

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

Means permitting removal or substitution of elements during...

2104161, 210435, 264169, 425197, 425199, B29F 306

Patent

active

048803740

ABSTRACT:
A filter exchange device in a molten resin passage in an extrusion molding machine, which includes at least one filter casing for airtightly enclosing a spare filter and having port means for exhausting air out of the filter casing and filling the interior thereof with a gas inactive to molten resin. Fish eyes contained in the molded product after filter exchange reduced in number.

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