Patent ID: 7867604
Filing Date: 2011-01-11
Classification: C08L,Y10T

Abstract:
1. A coextruded film consisting of: a) between a 10 and 100 μm thick layer of a composition comprising: the total of 1), 2), and 3) making 100 parts by weight, b) between a 2 and 50 μm thick PVDF-based layer comprising, as main constituents, 75-85 parts by weight of PVDF per 25 to 15 parts by weight of a polymethylmethacrylate (PMMA) copolymer, wherein said PMMA copolymer contains 85 to 95% by weight of MMA units and 5 to 15% by weight of methyl acrylate or ethyl acrylate units; wherein said layer of the composition a) is transparent to visible light but opaque to UV radiation is flexible, and is not whitened when the layer of the composition a) is folded or stretched.