Patent ID: 8071488
Filing Date: 2011-12-06
Classification: B32B,Y10T

Abstract:
1. A thermo-plastic polyolefin based tarpaulin comprising: a base material impregnated with polypropylene resin in a fiber yarn with a thickness of 150 to 3000 denier, the fiber yarn being non-woven yarn or filament yarn; an upper film and a lower film disposed on an upper surface and a lower surface of the base material, respectively, each of the upper film and the lower film being made of thermo-plastic polyolefin based complex resin for reinforcing cold-proofing and abrasion resistance, and each of the upper film and the lower film including a filler, an ultraviolet light blocker, an antioxidant, and a static electricity blocker; an adhesive layer applied by polyurethane-cyano acrylate adhesives on an upper surface of the upper film; a surface treatment agent layer made of fluorine acrylic resin disposed on an upper surface of the adhesive layer for improving a print processing property and weather-ability by accommodating a polarity in printing a photographic print surface on the surface treatment agent layer; wherein the upper film and the lower film are made of: (i) 65 to 85 wt % thermo-plastic polyolefin based complex resin, wherein the thermo-plastic polyolefin based complex resin includes 40 to 60 wt % linear low-low density polyethylene resin (LLD PE) and 40 to 60 wt % thermo-plastic polyolefin based elastomer resin (TPE resin); (ii) 14.7 to 30 wt % Talc or CaCo3 as the filler; (iii) 0.1 to 2.0 wt % UV Stabilizer of bis sebaceate group or poly-tetra methylbutylamino group as the ultraviolet light blocker; (iv) 0.1 to 1.5 wt % phenol free processing stabilizer of phosphate & hydroxylamine group as the antioxidant; and (v) 0.1 to 1.5 wt % of monoglyceride as the static electricity blocker, wherein the linear low-low density polyethylene resin (LLD PE) has a density of 0.918 to 0.922 and a melting index 0.8 to 1.2, wherein the thermo-plastic polyolefin based elastomer resin (TPE resin) includes 55 to 65 wt % of rubber, 10 to 30 wt % of polypropylene, and 15 to 25 wt % of polyethylene, and wherein the adhesive layer consists of 5 to 20 wt % polyurethane-cyanacrylate based resin dissolved in 80 to 95 wt % solvent, the solvent including a material selected from the group consisting of methyl ethyl keton (MEK), dimethyl formamide (DMF), and ethylene acetate (EA).