Heat-sealable antistatic polypropylene films

Details Heat-sealable antistatic polypropylene films Heat-sealable antistatic polypropylene films

1982-05-11

1983-06-07

Lesmes, George F.

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

1563084, 156229, 1562441, 156243, 428349, B32B 2708, B29C 1900

Patent

active

RE0312690

ABSTRACT:
An oriented heat-sealable antistatic polypropylene film is manufactured by applying to one or both surfaces of a base polypropylene film, preferably by co-extrusion, a layer of a heat-sealable olefinic polymer (for example, a predominantly linear random copolymer of ethylene with butene-1) containing between 0.2 and 10% by weight of an anionic hydrocarbyl (preferably long chain alkyl) sulphonate. A slip agent, for example oleamide, may also be incorporated in the base polypropylene film. The antistatic film has improved heat-sealing properties which permits it to be run successfully on packaging machinery at high speeds.

REFERENCES:
patent: 3592879 (1971-07-01), Ott et al.
patent: 3936422 (1976-02-01), Wirth et al.
patent: 4117193 (1977-11-01), Tsuchiya et al.
patent: 4123475 (1978-10-01), Abolins et al.

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