Compositions: coating or plastic – Coating or plastic compositions – Inorganic settable ingredient containing
Patent
1994-08-08
1996-09-24
Bell, Mark L.
Compositions: coating or plastic
Coating or plastic compositions
Inorganic settable ingredient containing
106772, 106779, 106122, 106DIG2, 252 62, 428703, C04B 1100
Patent
active
055587100
ABSTRACT:
An acoustical tile composition based on a gypsum/cellulosic fiber composition which can replace all or a portion of the mineral wool normally present in acoustical ceiling tiles. The gypsum/cellulosic fiber composition is combined with a lightweight aggregate material and a binder to form a composition which is used in a water-felting process to manufacture acoustical ceiling tiles and panels. The preferred source of the cellulosic fiber is a composite gypsum/cellulose fiber material which is prepared by mixing the gypsum and cellulosic fiber material with sufficient water to form a dilute slurry which is then heated under pressure to calcine the gypsum, converting it to an alpha calcium sulfate hemihydrate. The resulting composite material comprises cellulosic fibers physically interlocked with calcium sulfate crystals. Another source of both gypsum and cellulosic fibers is waste (scrap) gypsum wallboard. Expanded perlite is the preferred lightweight aggregate material.
REFERENCES:
patent: 1769519 (1930-07-01), King et al.
patent: 1996032 (1935-03-01), Roos
patent: 1996033 (1935-03-01), King
patent: 2772603 (1956-12-01), Waggoner
patent: 2884380 (1959-04-01), Cook et al.
patent: 3090699 (1963-05-01), Bulson
patent: 3228825 (1966-01-01), Waggoner
patent: 3244632 (1966-04-01), Schulz
patent: 3246063 (1966-04-01), Podgurski
patent: 3307651 (1967-03-01), Podgurski
patent: 3367871 (1968-02-01), Mueller et al.
patent: 3498404 (1970-03-01), Roberts
patent: 3510394 (1970-05-01), Cadotte
patent: 3804706 (1974-04-01), Kurashige
patent: 4062721 (1977-12-01), Guyer et al.
patent: 4126512 (1978-11-01), Hill
patent: 4530653 (1985-07-01), Ishii
patent: 4587278 (1986-05-01), Dotzauer et al.
patent: 4613627 (1986-09-01), Sherman et al.
patent: 4735756 (1988-04-01), Rausch
patent: 4861822 (1989-08-01), Keskey et al.
patent: 4863979 (1989-09-01), Beyersdorf et al.
patent: 4925529 (1990-05-01), Dotzauer et al.
patent: 4941949 (1990-07-01), Luszczak
patent: 4963603 (1990-10-01), Felegi
patent: 5013405 (1991-05-01), Izard
patent: 5022963 (1991-06-01), Porter et al.
patent: 5047120 (1991-09-01), Izard et al.
patent: 5134179 (1992-07-01), Felegi
patent: 5171366 (1992-12-01), Richards et al.
patent: 5250153 (1993-10-01), Izard et al.
patent: 5277762 (1994-01-01), Felegi et al.
patent: 5320677 (1994-06-01), Baig
patent: 5395438 (1995-03-01), Baig et al.
Bell Mark L.
Janci David F.
Lorenzen John M.
Marcheschi Michael
USG Interiors, Inc.
LandOfFree
Gypsum/cellulosic fiber acoustical tile composition does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gypsum/cellulosic fiber acoustical tile composition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gypsum/cellulosic fiber acoustical tile composition will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1926119