Polyolefin compositions with balanced shrink properties

Details Polyolefin compositions with balanced shrink properties Polyolefin compositions with balanced shrink properties

1996-11-13

1999-10-26

Wilson, Donald R.

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

428 369, 428218, 428349, 428516, 525240, B32B 702, B32B 2708

Patent

active

059724447

ABSTRACT:
This invention relates to an improved shrink film having balanced properties. In particular, this invention relates to a biaxially oriented polyolefin shrink film made from a particular polymer mixture which includes a first ethylene polymer component having a single differential scanning calorimetry (DSC) melting peak or a single Analytical Temperature Rising Elution Fractionation (ATREF) peak and a second ethylene polymer component having one or more DSC melting peaks, wherein the density differential between the two component polymers about 0 to about 0.03 g/cc. Improved properties include increased shrink responses, wide orientation windows, higher modulus and high softening temperatures.

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patent: 5677383 (1997-10-01), Chum et al.
Kissin, "Olefin Polymers", Enc. Chem. Tech., vol. 17, p. 704 (1996).

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