Laminated film having poly(4-methyl-1-pentene)base layer

Details Laminated film having poly(4-methyl-1-pentene)base layer Laminated film having poly(4-methyl-1-pentene)base layer

B - Operations, Transporting

32

B

154/140

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

Patent

CA 1311998

LAMINATED FILM HAVING POLY(4-METHYL-1-PENTENE) BASE LAYER ABSTRACT OF THE DISCLOSURE A laminated film comprising (A) a base layer of a polymer based on 4-methyl-1-pentene; (B) provided on at least one side of the base layer, an interlayer of an .alpha.-olefin copolymer comprising 10 - 85 mole% of propylene, 3 - 60 mole% of 1-butene and 10 - 85 mole% of a-olefin having 5 or more carbon atoms, a degree of crystallinity of the copolymer as measured by X-ray diffractometry being 20% or less; and (C) provided on the interlayer, a heat- sealable layer of an .alpha.-olefin polymer material pre- dominantly comprising an .alpha.-olefin having 2 to 4 carbon atoms.

567944

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