Methods of making polyethylene/metal laminates

Details Methods of making polyethylene/metal laminates Methods of making polyethylene/metal laminates

1988-05-19

1990-06-19

Cashion, Jr., Merrell C.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156221, 156224, 1562726, 1562733, 1563086, 1563099, 156322, B32B 3120, B32B 3128

Patent

active

049350790

ABSTRACT:
A method of making a laminated structure in which a polyethylene element is bonded directly to a metal substrate by the application of heat and pressure is characterised by the selection of the polyethylene, for the purpose of obtaining good adhesion, to be a linear low density polyethylene having a density from 0.91 to 0.94 g/ml.sup.-1 and a melt flow index in the range 0.2 to 2.0 g/10 min, produced by low pressure co-polymerisation of ethylene and but-1-ene. The polyethylene may be pre-treated, e.g. by corona discharge, glow discharge or flame treatment to further improve the adhesion. The polyethylene element may be a film applied to one or both sides of the metal substrate which may be a sheet or foil.

REFERENCES:
patent: 2795263 (1957-06-01), Honkanen
patent: 3981849 (1976-09-01), Frese
patent: 4125670 (1978-11-01), Perfetti
patent: 4313996 (1982-02-01), Newman

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