Ceiling tile construction
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United States of America Patent
Stats
-
Apr 3, 2012
Grant Date -
Sep 11, 2008
app pub date -
May 16, 2008
filing date -
Feb 13, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A ceiling tile of gypsum and cellulose fibers formed into a board by initially mixing the fibers and gypsum in a water-based slurry that is felted and thereafter pressed and dried with a desired board thickness, the dried board being processed to form a plurality of holes in a face thereof through at least the majority of the thickness of the board, the collective volume of the holes being sufficient to reduce the weight of the board by at least 10% and increase the NRC exhibited by the board over that which would otherwise be found in a board of the same composition without such holes.
First Claim
Family
International Classification(s)
- B29C:SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTAN....
- B28B:SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG O....
- B29D:PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FRO....
- E04B:GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTIT....
- E04F:FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
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