Metal coated with a layer of polymer film and a process for its

Details Metal coated with a layer of polymer film and a process for its Metal coated with a layer of polymer film and a process for its

1982-05-04

1984-09-18

Herbert, Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

15624411, 264205, 427409, 428332, 428457, 428461, B32B 702, B32B 1508

Patent

active

044724756

ABSTRACT:
Metal coated with a polymer film having a thickness between 10 and 500 .mu.m. The film is a terpolymer comprising 88 to 98.7 mole % of units derived from ethylene, from 1 to 10 mol % of units derived from an alkyl (meth)-acrylate, and from 0.3 to 3 mol % of units derived from maleic anhydride, and optionally may contain up to 5 mol % of units derived from a fourth monomer selected from .alpha.-olefins having from 3 to 8 carbon atoms, monoalkyl maleates and dialkyl maleates in which the alkyl groups have from 1 to 6 carbon atoms, vinyl acetate, and carbon monoxide. The terpolymer film has a melt index of between 2 and 10 dg/minute. The metal substrate is coated with the terpolymer film at a temperature between 140.degree. C. and 300.degree. C., the speed of travel of the metal substrate being between 40 to 400 meters per minute.

REFERENCES:
patent: 4032692 (1977-06-01), Birnkrant et al.

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