Ethylenic composite film structure

Details Ethylenic composite film structure Ethylenic composite film structure

B - Operations, Transporting

32

B

18/783

B32B 27/08 (2006.01) B32B 27/32 (2006.01)

Patent

CA 1172412

Abstract of the Disclosure A composite film structure composed of a layer (A) of high density polyethylene having an intrinsic viscosity [n] as measured in decalin at 135°C of 1.3 - 2.9 dl/g, a melt index (MIA) of 0.3 - 7.0 g/10 min. and a density of 0.950 - 0.970 g/cm3, in which up to 2 mole % of an alpha-olefin may be contained; and layers (B) of an ethylene/C5 -C10 alpha-olefin random copolymer having an intrinsic viscosity [n] as measured in decalin at 135°C of 1.0 - 2.4 dl/g, a melt index (MIB) of 0.5 - 20 g/10 min., a density of 0.910 - 0.940 g/cm3, and a melting point of 115 - 130°C, with the proviso that the MIA/MIB ratio is 0.15 - 4.0, said layers (B) being in direct contact with the two sides of said layer (A) and laminated thereto.

387731

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