Transparent multi-layered film and processes therefor

Details Transparent multi-layered film and processes therefor Transparent multi-layered film and processes therefor

1976-05-05

1978-02-28

Lusignan, Michael R.

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

156244, 427161, 427336, 427341, 427365, 427398A, 427398B, 427428, 428523, B05B 500, B05D 312, B05D 300, B32B 2708

Patent

active

040768953

ABSTRACT:
A process is provided for imparting transparency to a multi-layered polymeric film comprising passing a continuous polymeric web into the nip formed by a pair of counter-rotating rolls, one of said rolls being a pressure roll and the other, a chill roll having a matte surface; extruding a molten polymeric film into the nip between said polymeric web and said chill roll to form a multi-layered film, while maintaining an inert liquid on at least that portion of the chill roll which contacts said extruded film.

REFERENCES:
patent: 2771388 (1956-11-01), Rocky et al.
patent: 2955970 (1960-10-01), Rice et al.
patent: 2989414 (1961-06-01), Pecker
patent: 3075868 (1963-01-01), Long
patent: 3077428 (1963-02-01), Heuser et al.
patent: 3194677 (1965-07-01), Schwarz et al.
patent: 3389036 (1968-06-01), Rudolph et al.
patent: 3850790 (1974-11-01), Denervaud

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