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.

Abstract: A block-resistant film is described which comprises a core layer of a thermoplastic polymer having a first side and a second side; a functional layer which is printable or sealable or treatable for printing or sealing is on the first side of the core layer, and a block-resistant layer is on the second side of the core layer. The block-resistant layer comprises a thermoplastic polymer and an amount of a polydialkylsiloxane, based upon the entire weight of the block-resistant layer, sufficient to inhibit blocking of the block-resistant layer to the functional layer when they are in contact and which polydialkylsiloxane deposits silicon onto the functional layer but the amount of silicon deposited is not substantially detrimental to the printing function or the sealing function.