Biaxially oriented film with voided baselayer

Details Biaxially oriented film with voided baselayer Biaxially oriented film with voided baselayer

1994-06-02

1996-05-07

Sluby, P. C.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

4283073, 4283084, 428349, 428516, 428518, 428520, 428910, 4283157, B32B 326, B32B 2720

Patent

active

055144608

ABSTRACT:
Biaxially oriented film including a voided base layer consisting of a propylene homopolymer and a particulate voiding agent, and a non-voided outer layer of propylene homopolymer coextensive with the voided base layer, the particular voiding agent having a mean particle size of not more than 2 .mu.m. Such films have good opacity combined with good gloss for the surface of the non-voided outer layer of propylene homopolymer on the base layer.

REFERENCES:
patent: 4377616 (1983-03-01), Ashcraft et al.
patent: 4578297 (1986-03-01), Duncan
patent: 4582753 (1986-04-01), Duncan
patent: 4701369 (1987-10-01), Duncan
patent: 4704323 (1987-11-01), Duncan et al.
patent: 4720416 (1988-01-01), Duncan
patent: 5091236 (1992-02-01), Keller et al.
patent: 5178942 (1993-01-01), Frognet et al.
patent: 5318834 (1994-06-01), Foulkes et al.

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