Coating processes – Solid particles or fibers applied – Uniting particles to form continuous coating with...
Patent
1994-02-28
1996-05-14
Beck, Shrive
Coating processes
Solid particles or fibers applied
Uniting particles to form continuous coating with...
427284, 427314, 4273935, B05D 302, B05D 500
Patent
active
055165516
ABSTRACT:
Sheet molded compound articles which optionally can be in-mold coated have the edges and exterior margin surfaces thereof sealed with a water-free and solventless fine particle size powder coating. The coating thickness has a gradual and smooth transition from the sealed edge to the non powder coated exterior surface thereby eliminating the need for sanding. The desired method of application is by electrostatic spraying and the cured powder coating is free of pops. Application of the powder coating to the edge and margin portions of the sheet molded compound article includes heating at least the edges of the article near or above the cure temperature of a subsequently applied powder coating to degas the article, reducing the temperature of at least the edge and margin portions of the article to a temperature below the powder coating cure temperature, applying a fine size powder coating material to the edge and margin portion of the article and heating the applied powder coating to a temperature at or above the minimum cure temperature thereof.
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patent: 5021519 (1991-06-01), Varde et al.
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Encyclopedia of Polymer Science and Engineering, Second Edition, vol. 3, pp. 632-633.
Anderson Adam M.
Castillo Joseph V.
DePalma Pasquale V.
Thompson Daniel A.
Beck Shrive
GenCorp Inc.
Hudak Daniel J.
Parker Fred J.
Rywalski Robert F.
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