Composition suitable for single-sided, low-noise, stretch cling film and films made therefrom
AssigneeDow Global Technologies LLC
InventorsShaun Parkinson, Andreas Mayer, Jesus Nieto, Pascal E. R. E. J. Lakeman
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Abstract
The invention is directed to a composition suitable for use in a single-sided stretch cling film, the composition having from 0.1 to 20 percent by weight of a propylene-based copolymer having substantially isotactic propylene sequences, and having from 80 to 99 percent by weight of an ethylene-based copolymer having a density of at least 0.905 g/cc, wherein a film made from the composition exhibits cling layer to release layer cling of at least 70 grams force per inch as measured by ASTM D-5458-95, noise levels of less than 87 dB during unwinding operations, and has a modulus of at least 3 MPA as determined by ASTM D-882.
Claims13
A single-sided stretch film, the film comprising:
- A. a cling layer comprising (1) from 0.1 to 20% by weight of a propylene-based copolymer having substantially isotactic propylene sequences, the propylene-based copolymer comprising propylene and from about 10 to about 33 mole % of units derived from an alpha olefin, the propylene-based copolymer having a melt flow rate less than 50 g/10 min;
- and (2) from about 80 to about 99% by weight of a ethylene-based copolymer having a density of at least 0.905 g/cc;
- and
- B. a release layer comprising a polyethylene having a density of at least 0.905 g/cc, wherein the film exhibits a cling layer to release layer cling of at least 70 grams force per inch as measured by ASTM D-5458-95, noise levels of less than 87 dB during unwinding operations, and has a modulus of at least 3 MPA as determined by ASTM D 882.
Dependencies are inferred from the claim text.