B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
25/100
B32B 3/26 (2006.01) B32B 5/14 (2006.01) B32B 5/20 (2006.01) C04B 28/34 (2006.01) C04B 38/00 (2006.01) E04F 13/14 (2006.01)
Patent
CA 1273781
Abstract The present invention relates to laminated acoustical tile products which are derived from compositions that are suitable to provide rigid, water-resistant phosphate ceramic materials. The tile products comprise a decorative facing comprising a substantially open-celled character and a backing layer of higher density, the backing layer and edges of the tile comprising substantially closed-celled facing characteristics. The backing layer provides structural strength and dimensional stability to the tile product whereas the decorative, open-celled facing provides access by sound waves to the interior regions of the board. The resulting composite material provides good acoustical performance, yet is capable of withstanding conventional handling stresses.
502527
Brown David S.
Forry John S.
Mentzer Nancy E.
Misselhorn Donald J.
Armstrong World Industries Inc.
Brown David S.
Forry John S.
Gowling Lafleur Henderson Llp
Mentzer Nancy E.
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