Heat-sealable, oriented, multilayer polyolefin film, process for

Details Heat-sealable, oriented, multilayer polyolefin film, process for Heat-sealable, oriented, multilayer polyolefin film, process for

1994-02-17

1996-01-16

Nold, Charles R.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428349, 428149, 428352, 4284242, 428404, 428407, 428331, 2065246, B32B 2732, B65D 6540

Patent

active

054846331

ABSTRACT:
An oriented, multilayer polyolefin film is described. It includes a base layer essentially containing polypropylene, and at least one heat-sealable outer layer. The heat-sealable outer layer contains from 0.1 to 0.5% by weight of SiO.sub.2 which has been subjected to organic aftertreatment coating and has a mean particle diameter of from 2 to 6 .mu.m, preferably from 4 to 5 .mu.m. The ratio between the mean particle diameter and the outer layer thickness is in the range from 3 to 11. Also described is a process for the production of the multilayer polyolefin film and the use thereof.

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Ullman, Encyklopadie der technschen Chemie, 4rl Ed, vol. 12, pp. 525-555, Considered to extent disclosed in specification, Database WPI; Derwent Publications Ltd. JP-A-1 065 175.

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