Silicone-free multilayer shrink film for high speed...

Details Silicone-free multilayer shrink film for high speed... Silicone-free multilayer shrink film for high speed...

2007-07-17

2007-07-17

Tarazano, D. Lawrence (Department: 1773)

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

C428S520000, C428S910000

Reexamination Certificate

active

11091028

ABSTRACT:
Multilayer shrink films and methods of making same that are substantially free of silicone. The multilayer shrink films of the invention are produced using film biaxial orienting means, have haze values of 5 or less and Young's modulus of 40,000 psi or greater and superior hot slip properties. Cyclic-olefin copolymer (COC) is used in the outermost layers to impart superior hot slip. Preferably the film comprises large proportion of linear low density polyethylene (LLDPE) or ethylene propylene butane terpolymer. Suitable COCs for use in the invention are limited to single site catalyzed COC.

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TICONA LLC, “Topas®: Thermoplastic Olefin Polymer of Amorphous Structure (COC)” [product brochure], 2004.

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