Biaxially oriented, multilayer polyolefin film of high shrinkage

Details Biaxially oriented, multilayer polyolefin film of high shrinkage Biaxially oriented, multilayer polyolefin film of high shrinkage

1993-07-08

1994-12-13

Buffalow, Edith

Stock material or miscellaneous articles

Hollow or container type article

Shrinkable or shrunk

428500, 428349, 428516, 428910, B65B 5300

Patent

active

053728823

ABSTRACT:
A transparent, coextruded, multilayer polyolefin film which can be heat-sealed at low temperatures and comprises a base layer and at least one top layer applied on one side. The multilayer film has, at 120.degree. C., a longitudinal shrinkage of greater than about 10%, preferably from about 15% to about 35%, and a transverse shrinkage of greater than about 10%, preferably from about 15% to about 35%. The multilayer film has, at 90.degree. C., a longitudinal shrinkage of at most about 10%, preferably from about 3% to about 8%, and a transverse shrinkage of at most about 10%, preferably from about 2% to about 8%. The top layers have a minimum sealing temperature of at most about 124.degree. C., preferably from about 75.degree. C. to about 110.degree. C. The film is useful as a packaging film.

REFERENCES:
patent: 5212009 (1993-05-01), Peiffer et al.
patent: 5234733 (1993-08-01), Schloegl et al.

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