Patent ID: 9150005
Filing Date: 2015-10-06
Classification: B32B,Y10T

Abstract:
1. A composite film, comprising: a 3-layered co-extruded biaxial-oriented film formed of polyester films or polypropylene films comprising a first layer, a second layer and a third layer stacked in sequence; an alternating layer structure comprising a plurality of organic protection layers and a plurality of inorganic layers, wherein the alternating layer structure is formed on the 3-layered co-extruded biaxial-oriented film, wherein the plurality of organic protection layers and the plurality of inorganic layers are stacked alternately, and the inorganic layers are formed by atom layer deposition, wherein each of the organic protection layers is formed of polyvinylidene chloride, polyvinylalcohol, ethylene-vinylalcohol copolymer, transparent esters or combinations thereof or each of the organic protection layers is a polymer layer which is cross-linked by multi-functional monomers and oligomers, wherein the multi-functional monomers comprise acrylate, epoxy acrylate, urethane acrylate, or combinations thereof; wherein when the 3-layered co-extruded biaxial-oriented film is formed of polyester films, the first layer comprises polyethylene terephthalate, glycol-modified polyethylene terephthalate, acid-modified polyethylene terephthalate, glycol-modified polycyclohexanedimethylene terephthalate or combinations thereof, the second layer comprises poly(ethylene terephthalate), poly(propylene terephthalate), polybutylene terephthalate, polyethylene naphthalate or combinations thereof, and the third layer comprises polyethylene terephthalate, glycol-modified polyethylene terephthalate, acid-modified polyethylene terephthalate, glycol-modified polycyclohexanedimethylene terephthalate or combinations thereof, and the first layer further comprises an anti-block agent, wherein the third layer has a lower viscosity than the second layer, wherein when the 3-layered co-extruded biaxial-oriented film is formed of polypropylene films, the first layer comprises polypropylene, ethylene-propylene copolymer, ethylene-propylene-butylene copolymer or combinations thereof, the second layer comprises polypropylene, ethylene-propylene copolymer or combinations thereof, and the third layer comprises polypropylene, ethylene-propylene copolymer, ethylene-propylene-butylene copolymer or combinations thereof, and the first layer further comprises an anti-block agent, wherein the third layer has a lower viscosity than the second layer; wherein the first layer has a thickness of between about 1 μm and about 5 μm, the second layer has a thickness of between about 13 μm and about 240 μm, and the third layer has a thickness of between about 1 μm and about 5 μm.