Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1989-10-26
1991-07-02
Seidleck, James J.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
264 407, 264167, 428116, B32B 312
Patent
active
050284665
ABSTRACT:
An extruder in accordance with the invention comprises a die (1) having an opening (2) in the form of an uninterrupted section constituting a frieze of rectilinear or curved segments that meet one another, and a mask (3) driven in reciprocating sliding motion over the die (1) and including a window which overlaps a varying portion of the section (2) as the mask moves.
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