Matte, biaxially oriented, multilayer polypropylene film of high

Details Matte, biaxially oriented, multilayer polypropylene film of high Matte, biaxially oriented, multilayer polypropylene film of high

1994-04-28

1996-02-27

Buffalow, Edith

Stock material or miscellaneous articles

Hollow or container type article

Shrinkable or shrunk

428516, 428323, 428910, 428249, 428215, 428913, B65B 5300

Patent

active

054947170

ABSTRACT:
The invention relates to a heat-sealable, shrinkable multilayer polypropylene film which comprises at least one base layer containing a propylene polymer or a propylene polymer mixture and at least one outer layer which comprises a mixture or a blend of two components I and II. The mixture contains copolymers and terpolymers of .alpha.-olefins having 2 to 10 carbon atoms and HDPE. The film has a longitudinal shrinkage of >20 and a transverse shrinkage of >25% at 120.degree. C.

REFERENCES:
patent: 3619195 (1971-11-01), Van Campen
patent: 4532189 (1985-07-01), Mueller
patent: 4578316 (1986-03-01), Clauson et al.
patent: 4597920 (1986-07-01), Golike
patent: 4622237 (1986-11-01), Lori
patent: 4855187 (1989-08-01), Osgood, Jr. et al.
patent: 4960637 (1990-10-01), Biczenczuk
patent: 5051481 (1991-09-01), Taka et al.
patent: 5292561 (1994-03-01), Peiffer et al.
Ullmann's Encyclopedia of Industrial Chemistry, 4th Edition, vol. 12, pp. 525-555 (1976).

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