Multi-wall sheet without the triangle effect, coated by...

Details Multi-wall sheet without the triangle effect, coated by... Multi-wall sheet without the triangle effect, coated by...

2004-05-12

2010-11-02

Huson, Monica A (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Layered, stratified traversely of length, or multiphase...

C264S177100

Reexamination Certificate

active

07824589

ABSTRACT:
Gussetless multi-wall sheets are prepared using a coextrusion process which entails feeding part of the base material directly into and via the male insert of the extrusion die, thereby producing the gussetless sheet.

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Patent Abstracts of Japan, Bd. 007, Nr. 063 (M-200), Mar. 16, 1983 & JP 57 207032 A (Hashitmoto Forming Kogyo KK), Dec. 18, 1982.

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