Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1995-11-09
1999-02-23
McCamish, Marion
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428207, 428219, 428341, 428342, 442 76, 106816, 106817, 181293, B32B 516
Patent
active
058741615
ABSTRACT:
This invention describes two products both with a plain, nonperforated surface visual consisting of a fiberboard substrate with or without a laminated porous nonwoven scrim and then a finished painted surface. The finish painted surface decorates or finishes the board, but most important, must remain acoustically transparent to retain the sound absorption properties of the fiberboard prior to painting. The fiberboard substrate is made to be porous or modified with hole perforations to cause it to be a good sound absorber. If the fiberboard substrate is sufficiently porous without hole perforations, then the sprayable, high solids, porous paint can be directly applied. If hole perforations are used to improve the sound absorption properties of the board substrate, then a porous, nonwoven scrim is attached and painted using the same high solids porous paint. This painted scrim must be sufficiently optically opaque to hide the hole punched board, yet sufficiently open to render it acoustically transparent. The inventions also include the paint coating alone or the paint/scrim coating alone.
REFERENCES:
patent: 3583522 (1971-06-01), Rohweder et al.
patent: 3755238 (1973-08-01), Wiita
patent: 4162342 (1979-07-01), Schwartz
Pape James D.
Sensenig Darryl L.
Armstrong World Industries Inc.
Cole Elizabeth M.
McCamish Marion
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