Usg Interiors, Inc.

Gregory O Palm

Weixin David Song

Steven W Sucech

Bangji Cao

Qing Claire Yu

Martin W Brown

John J Polyner

Martin Brown

Ray C Privett

Stephen Schettler

A water felted base mat for a suspended ceiling tile comprising on a weight basis about &#xbd; mineral wool, starch binder, limited to about &#x215b;, newsprint, limited to about &#x215b;, and about &#xbc; expanded glass beads.

Ceiling tile base mat

A cast type ceiling tile comprising a mixture containing 30 to 70% mineral wool, 10 to 40% expanded glass beads, 8 to 20% starch, 0 to 15% stucco, and 0 to 1% boric acid.

Cast ceiling tile

An acoustical building panel and method of manufacturing it are disclosed. Embodiments of the panel include a porous nonwoven scrim, a coating deposited on the scrim, a base mat, and an adhesive deposited on either the base mat or the scrim in a discrete form such as in droplets. Embodiments of the method of manufacture include steps of perforating the base mat, applying the adhesive to the base mat in the discrete form, laminating the scrim onto the base mat, and applying the coating to the scrim surface.

Porous nonwoven scrims in acoustical panels

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Beavercreek, OH, United States of America

Gregory O Palm