In-press process for coating composite substrates

Details In-press process for coating composite substrates In-press process for coating composite substrates

2011-04-05

2011-04-05

Lightfoot, Elena T (Department: 1715)

Coating processes

Applying superposed diverse coating or coating a coated base

Synthetic resin coating

C427S385500, C427S369000, C427S370000, C427S371000, C427S389900, C427S393000, C427S408000

Reexamination Certificate

active

07919148

ABSTRACT:
An improved process for manufacture of polymer coated composite substrates is described. A coated composite substrate is prepared in the press by applying a layer of a primer coating composition to the surface of a compressible mat comprising fibers and/or particles and a resin binder. The primer coating composition is formulated preferably as a fast setting polymer latex capable of forming a chemically crosslinked polymer matrix when applied to the surface of a compressible mat. A thermosetting top coat composition can be applied directly over the primer coating composition before heat-processing the mat to improve surface quality and release characteristics. Compressing and heating the coated mat produces a finished composite substrate directly out of the press.

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