Multilayered thermoplastic film and sign cutting method using the same

A multilayered thermoplastic film, comprising:

• a thermoplastic core layer having a first side and a second side, the core layer comprising:
• (a) a polyolefin having a density in the range of about 0.89 to about 0.97 grams per cubic centimeter;
• (b) from about 2% to about 10% by weight of a second polymeric material selected from ionomers derived from sodium, lithium or zinc and an ethylene/unsaturated carboxylic acid copolymer,
• (c) from about 1% to about 40% by weight of a third polymeric material selected from ethylene/vinyl acetate copolymers, acid modified ethylene/vinyl acetate copolymers, anhydride modified ethylene/vinyl acetate copolymers, acrylate modified ethylene/vinyl acetate copolymers, anhydride modified polyolefins, acid modified ethylene acrylate polymers and anhydride modified ethylene acrylate polymers;
• and
• (d) a light stabilizer at a concentration of about 1000 to about 10,000 ppm based on the weight of the core layer;
• at least one abrasion resistant first thermoplastic skin layer overlying the first side of the core layer;
• at least one second thermoplastic skin layer overlying the second side of the core layer, and
• at least one layer of pressure sensitive adhesive overlying the second thermoplastic skin layer,
• wherein the composition of the core layer is different from the composition of the skin layers, and the core layer and the skin layers are characterlzed by the absence of PVC.

An unoriented multilayered thermoplastic film, comprising:

• a thermoplastic core layer having a first side and a second side, the core layer comprising:
• (a) a polyolefin having a density in the range of about 0.89 to about 0.97 grams per cubic centimeter;
• (b) from about 3% to about 10% by weight of a second polymeric material selected from ionomers derived from sodium, lithium or zinc and an ethylene/methacrylic acid copolymer,
• (c) from about 1% to about 40% by weight of a third polymeric material selected from ionomers derived from sodium, lithium or zinc and an ethylene/unsaturated carboxylic acid copolymer,
• (d) a light stabilizer at a concentration of about 1,000 to about 10,000 ppm based on the weight of the of core layer;
• an abrasion and scuff resistant clear first thermoplastic skin layer overlying the first side of the core layer, the first skin layer comprising a light stabilizer at a concentration of about 2,000 to about 20,000 ppm based on the weight of the first skin layer;
• a clear second thermoplastic skin layer overlying the second side of the core layer;
• the second skin layer comprising a light stabilizer at a concentration of about 1,000 to about 15,000 ppm based on the weight of the second skin layer;
• and
• at least one layer of pressure sensitive adhesive overlying the second thermoplastic skin layer;
• wherein the composition of the core layer is different from the composition of the skin layers, and the core layer and the skin layers are characterized by the absence of PVC.

An unoriented multilayered thermoplastic film, comprising:

• a thermoplastic core layer having a first side and a second side, the core layer comprising:
• (a) a polyolefin having a density in the range of about 0.89 to about 0.97 grams per cubic centimeter;
• and
• (b) from about 2% to about 25% by weight of a second polymeric material selected from ionomers derived from sodium, lithium or zinc and an ethylene/unsaturated carboxylic acid copolymer;
• at least one abrasion resistant first thermoplastic skin layer overlying the first side of the core layer;
• at least one second thermoplastic skin layer overlying the second side of the core layer;
• and
• at least one layer of a pressure sensitive adhesive overlying the second thermoplastic skin layer,
• wherein the composition of the core layer is different from the composition of the skin layers, and the core layer and the skin layers are characterized by the absence of PVC.

An unoriented multilayered thermoplastic film, comprising:

• a thermoplastic core layer having a first side and a second side, the core layer comprising:
• (a) a polyolefin having a density in the range of about 0.89 to about 0.97 grams per cubic centimeter;
• (b) from about 2% to about 10% by weight of a second polymeric material selected from ionomers derived from sodium, lithium or zinc and an ethylene/unsaturated carboxylic acid copolymer, and
• (c) from about 1% to about 40% by weight of a third polymeric material selected from ethylene/vinyl acetate copolymers, acid modified ethylene/vinyl acetate copolymers, anhydride modified ethylene/vinyl acetate copolymers, acrylate modified ethylene/vinyl acetate copolymers, anhydride modified polyolefins, acid modified ethylene acrylate polymers and anhydride modified ethylene acrylate polymers;
• at least one abrasion resistant first thermoplastic skin layer overlying the first side of the core layer;
• at least one second thermoplastic skin layer overlying the second side of the core layer;
• and at least one layer of pressure sensitive adhesive overlying the second skin layer;
• wherein the composition of the core layer is different from the composition of the skin layers, and the core layer and the skin layers are characterized by the absence of PVC.