Dual barrier laminate process

Details Dual barrier laminate process Dual barrier laminate process

1990-04-11

1991-11-19

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

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

264 37, 4251311, B29C 4706

Patent

active

050664433

ABSTRACT:
The present invention provides a novel process for the coextrusion of a laminate containing more than a single barrier layer. The process overcomes the interfacial instability associated with thinning and spreading a composite stream containing a barrier layer of EVOH. Furthermore, the process prevents migration of EVOH particles from regrind.

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patent: 4410602 (1983-10-01), Komoda et al.
patent: 4522775 (1985-06-01), Briggs et al.
patent: 4533308 (1985-08-01), Cloeren
patent: 4533510 (1985-08-01), Nissel
patent: 4780258 (1988-10-01), Cloeren
patent: 4808482 (1989-02-01), Benge et al.
patent: 4839131 (1989-06-01), Cloeren

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