Matte surface film

Details Matte surface film Matte surface film

1998-05-15

2000-07-11

Thibodeau, Paul

Stock material or miscellaneous articles

Composite

Of silicon containing

428500, 428515, 428516, B32B 2732

Patent

active

06087015&

ABSTRACT:
The invention is directed to a thermoplastic film having a matte surface comprising: a core layer of a thermoplastic polymer, the core layer having a first side and a second side, and a matte surface layer on a first side of the core layer, the matte surface layer comprising a blend of (i) a copolymer of ethylene and propylene or a terpolymer of ethylene, propylene and a C.sub.4 to C.sub.10 alpha-olefin or a propylene homopolymer; (ii) an ethylene polymer and (iii) a polydialkylsiloxane selected from the group consisting of (1) a polydialkylsiloxane having a number average molecular weight above about 250,000, typically above about 300,000 and a viscosity of above about 10,000,000 cSt, usually ranging from about 15,000,000 to about 20,000,000 cSt., and (2) a polydialkylsiloxane functionalized polyolefin. The external surface of the matte surface layer demonstrates a coefficient of friction ranging from about 0.1 to about 0.85 as determined by ASTM D1894 with an 18.14 kg (4 lb.) pound sled.

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patent: 5891555 (1999-04-01), O'Brien
Japanese Patent Application Publication: 2668799 dated Jul. 4, 1997, Official Gazette for Examiner Patents.

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