Biaxially oriented polypropylene film for metallizing applicatio

Details Biaxially oriented polypropylene film for metallizing applicatio Biaxially oriented polypropylene film for metallizing applicatio

1989-09-27

1991-03-05

Herbert, Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428220, 428323, 428461, 428464, 428516, B32B 1508

Patent

active

049977008

ABSTRACT:
A metallizable, heat-sealable, biaxially oriented multi-layer film for metallizing applications is described which comprises a base layer comprising polypropylene, a first polyolefinic heat-sealable surface layer and a second polyolefinic metallizable surface layer. The second polyolefinic metallizable surface layer comprises a propylene-ethylene copolymer, which has an ethylene content of 1.2 to 2.8% by weight, a distribution factor V.sub.F greater than 10, an enthalpy of fusion .DELTA. H.sub.m greater than 90 J/g and a thermo-oxidation temperature T.sub.ox greater than 240.degree. C.

REFERENCES:
patent: 4345005 (1982-08-01), All et al.
patent: 4357383 (1982-11-01), Howden et al.
patent: 4604322 (1986-08-01), Reid
patent: 4883698 (1989-11-01), Bothe et al.

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