Method for making balanced low shrink tension polyolefin film

Details Method for making balanced low shrink tension polyolefin film Method for making balanced low shrink tension polyolefin film

1982-10-05

1984-03-13

Lowe, James B.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

2642107, 2642896, 264342RE, C08F11002, B29C 1702

Patent

active

044368887

ABSTRACT:
Biaxially oriented, balanced, low shrink tension, heat-shrinkable polyolefin film having a shrink percent of at least 7% in both MD and TD at 110.degree. C. and a shrink force of not greater than 2.2 MPa in both MD and TD at 110.degree. C. is produced by a sequential hot/cold/hot/cold treatment of ordinary biaxially oriented, balanced, heat-shrinkable polyolefin film where the film is stretched and relaxed, respectively in the two hot stages of the treatment sequence.

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