Extrusion coating compositions and method

Details Extrusion coating compositions and method Extrusion coating compositions and method

2006-09-05

2006-09-05

Robertson, Jeffrey B. (Department: 1712)

Coating processes

With pretreatment of the base

Heating or drying pretreatment

C427S209000, C427S374300, C427S386000, C427S388100

Reexamination Certificate

active

07101590

ABSTRACT:
Solid extrusion coating compositions for metal substrates, a method of extrusion coating a metal substrate, and a metal article are disclosed. The extrusion coating composition is a thermoplastic material and comprises: (a) a polyester having a weight average molecular weight of about 10,000 to about 50,000, and optionally, (b) a modifying resin, such as an epoxy resin having an epoxy equivalent weight of about 500 to about 15,000. The extrusion coating composition is applied to a metal substrate in an extrusion process to provide a composition film having a thickness of about 1 to about 40 microns.

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