Abuse-resistant cast acoustical ceiling tile having an...

Details Abuse-resistant cast acoustical ceiling tile having an... Abuse-resistant cast acoustical ceiling tile having an...

E - Fixed Constructions

04

B

E04B 1/86 (2006.01) B32B 1/00 (2006.01) E04B 1/82 (2006.01) E04B 1/84 (2006.01) E04B 9/04 (2006.01) E04F 13/08 (2006.01) E04F 13/16 (2006.01)

Patent

CA 2496333

An abuse-resistant, cast acoustical ceiling tile having improved impact resistance and excellent sound absorption values. The ceiling tiles have aggregate particles applied to the surface of a wet pulp in the casting process and the particles are embedded in the pulp by compression with a roll and/or smooth plates. The aggregate particles have an average particle diameter of at least about 1,000 microns. The ceiling tiles have excellent sound absorption properties with a noise reduction coefficient (NRC) of at least about 0.50. Calcium carbonate is the preferred aggregate particle material.

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