Title: Composite ceiling tile
Application Number: 200610121606 Application Date: 2006.08.23
Publication Number: 1920217 Publication Date: 2007.02.28
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: E04F13/077;B05D5/00
Applicant(s) Name: Usg Interiors Inc. Address:
Inventor(s) Name: Baig Mirza A.;Polyner John J.;Couch Terry
Attorney & Agent: chen jizhuang
Abstract:
    An improved economically produced clean room ceiling tile formed as a composite comprising a base board and a finish coated paper facer laminated to the base board. The base board is preferably made with excess thickness and is machined to a desired caliper. The machined board is sealed with a clay coating and thereafter coated with a water-based adhesive. The paper facer is laminated to the board with the water-based adhesive and is finish coated with a water-based wet scrubbable coating. The paper facer is easy to laminate, exhibits excellent coverage of surface defects in the base board surface, is fully compatible with the water-based finish coating, and contributes to the sag resistance of the tile.
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