Coating process and compositions

Details Coating process and compositions Coating process and compositions

C - Chemistry, Metallurgy

09

D

C09D 201/00 (2006.01) B05D 1/26 (2006.01) B05D 1/28 (2006.01) C09D 163/00 (2006.01)

Patent

CA 2139760

A process for coating a metal substrate for packaging end use comprises applying to a primary substrate a suitable, substantially solvent-free thermosettable composition. The composition is applied as a thermosettable film by extrusion in melt (including plastified) form through an extrusion coating die onto a substrate, and there is relative movement between the die and the substrate so that successive areas on the substrate are coated with the thermosettable composition, so as to form a film. The primary substrate is the metal substrate for packaging end use or an intermediate temporary support from which the applied coating is transferred onto the metal substrate for packaging end use, and the applied coating is thermally cured after extrusion through the extrusion coating die. Compositions suitable for use in this and other coating processes are described.

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