Heat sealable packaging film of a polyacrylonitrile substrate co

Details Heat sealable packaging film of a polyacrylonitrile substrate co Heat sealable packaging film of a polyacrylonitrile substrate co

1979-03-05

1980-04-08

Cannon, J. C.

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

428910, B32B 2708, B32B 2730

Patent

active

041973569

ABSTRACT:
The present invention is directed to improved coated film products comprising essentially a film substrate having a dry continuous adherent coating thereon formed from certain colloidally stable polymer latexes. In particular, such polymers comprise vinylidine chloride multipolymers with a relatively low pH which are coated upon the surface of an oriented polyacrylonitrile film which has been corona discharge treated prior to coating. Such coated film products exhibit improved resistance to seal strength deterioration or complete failure when the coated film products, after having been sealed, are immersed in water at room temperature or above including boiling water.

REFERENCES:
patent: 3262808 (1966-07-01), Crooks et al.
patent: 3437717 (1969-04-01), Isley et al.
patent: 3755050 (1973-08-01), Golden et al.
patent: 4123576 (1978-10-01), Kobayashi et al.

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