Shrink films of ethylene/alpha-olefin copolymers

Details Shrink films of ethylene/alpha-olefin copolymers Shrink films of ethylene/alpha-olefin copolymers

B - Operations, Transporting

29

C

18/1041, 204/91.

B29C 61/00 (2006.01) C08L 23/04 (2006.01) C08L 23/08 (2006.01)

Patent

CA 1174423

ABSTRACT A shrink film having high optical clarity, good shrink properties, and good mechanical properties is obtained by stretching biaxially a film made of a copolymer of ethylene with at least one C8-C18 .alpha.-olefin, which copolymer has two distinct crystallite melting points below 128°C, the difference between these melting points being at least 15°C, and stretching being carried within the temperature range defined by these melting points. The above copolymer may be blended with a homopolymer of ethylene or copolymer of ethylene with an ethylenically unsaturated comonomer, which may constitute up to about 95 weight % of the blend. The shrink film of this invention is particularly suitable for wrapping consumer goods which have to maintain good sales appeal.

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