Heat-sealable antistatic polypropylene films

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

B - Operations, Transporting

32

B

18/1007

B32B 27/08 (2006.01) B32B 27/32 (2006.01) C08J 7/04 (2006.01) C09J 123/04 (2006.01)

Patent

CA 1149124

ABSTRACT HEAT-SEALABLE ANTISTATIC POLYPROPYLENE FILMS 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. DRH/JR/MCM/SA/BA 321

335895

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