03-04-2014 дата публикации
Номер: US20140093725A1
The present subject matter relates to a non-PVC film and film laminate for use in marketing or advertising campaigns, for indoor or outdoor use, or other environment impacted promotions and safety applications. One embodiment of the film includes three layers. The top layer may include a homopolypropylene or a polypropylene/polyethylene random copolymer, with an optional gloss modifier. The film may be transparent, translucent, clear or have other desirable optical properties. 1. An optically transparent protective film comprising:a) a top layer,b) middle layer, substantially coextensive with, and adhered to, the top layer, andc) a bottom layer, substantially coextensive with, and adhered to, the middle layer,wherein the top layer includes a polypropylene homopolymer or copolymer.2. The film of claim 1 , wherein at least one of the top claim 1 , middle claim 1 , and bottom layers includes at least one additive.3. The film of claim 2 , wherein the at least one additive is selected from the group consisting of slip agents claim 2 , antiblock agents claim 2 , flame retardants claim 2 , process aids claim 2 , free-radical scavengers claim 2 , cross-linking agents claim 2 , thickeners claim 2 , flow and leveling agents claim 2 , rheology modifiers claim 2 , surfactants claim 2 , defoamers claim 2 , wetting agents claim 2 , and combinations thereof.4. A glossy optically transparent protective film comprising: i) an abrasion resistant resin having a MFR of 4.2-12 and a MI of 0.1 to 12, and', 'ii) at least one additive selected from the group consisting of process aids and antiblock agents,, 'a) a skin layer comprising i) ethylene vinyl acetate having a MI of 0.1-10, and', 'ii) 0 to 5 wt % UV stabilizer,, 'b) at least one tie layer comprising i) 3.2-5.5% polyethylene PP/PE RCP having a MFR of 5-12,', 'ii) 0 to 5 wt % UV stabilizer, and, 'c) a core layer comprising i) 3.2 to 5.5% ethylene PP/PE RCP having a MFR of 5-12,', 'ii) 0 to 5% UV stabilizer,', 'iii) 0.1-2% antiblock ...
Подробнее