Multilayer coextrusion process for producing selective reflectiv

Details Multilayer coextrusion process for producing selective reflectiv Multilayer coextrusion process for producing selective reflectiv

1976-09-03

1978-06-13

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

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

264176R, 4251311, 4251335, B29F 306

Patent

active

040949478

ABSTRACT:
Multilayer film or sheet prepared by coextrusion is extruded wherein the thickness of the inner layers is varied by varying the flow of one component to the central portion of the sheet while diverting that portion to an external portion of the sheet or film.

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patent: 3565985 (1971-02-01), Schrenk et al.
patent: 3576707 (1971-04-01), Schrenk et al.
patent: 3743460 (1973-07-01), Woolridge
patent: 3773882 (1973-11-01), Schrenk

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