Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1989-10-23
1992-04-21
Dawson, Robert A.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
264466, 264255, 264309, B29C 6722
Patent
active
051065479
ABSTRACT:
Pre-formed millwork article for attachment to a building wherein the article has a core composed of a rigid filler material, such as an expandable polystyrene, a body portion composed of a rigid foamed material, such as polyurethane, and an exterior coating layer. The body has an inner surface which is adjacent to the core and an outer surface. The exterior coating layer is adjacent to the outer surface of the body. The coating layer can be a paint. The method for manufacturing the pre-formed millwork article consists of: (a) spraying an exterior coating layer in a mold; (b) heating the coating layer and the mold in order to cure the coating layer; (c) pouring a foamable material in the mold over the cured coating layer; (d) placing a filler material into the mold over the foamable material; (e) alllowing the foamed material to foam and harden; and (f) removing the article from the mold.
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Beck Merle G.
Beck Randall S.
Dawson Robert A.
Kuhns Allan R.
Style-Mark, Inc.
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