Heat-sealable antistatic polypropylene films

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

1979-08-23

1981-10-13

Lesmes, George F.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

1563084, 156229, 15624411, 156243, 428516, 525 3, 260DIG15, B32B 2708, B29C 1900, B32B 2700

Patent

active

042948827

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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