Paper making and fiber liberation – Processes and products – Multi-layer waterlaid webs or sheets
Patent
1997-02-25
1998-12-22
Derrington, James
Paper making and fiber liberation
Processes and products
Multi-layer waterlaid webs or sheets
162145, 162154, 1621811, 264 82, 264 86, C04B 3800
Patent
active
058513540
ABSTRACT:
The object of the present invention is to improve the overall strength and interlaminar strength of a compact (green sheet) before hydrothermal reaction by using alunites, alums and aluminum sulfate having a specified specific surface area which does not require the addition of a setting retarder or a curing accelerator together with a curing agent in order to provide a method of manufacture for a lightweight calcium silicate board which does not give rise to interlaminar peeling or bursting during hydrothermal reaction and to provide such a calcium silicate board. The method of manufacture for a calcium silicate board according to the present invention is characterized by use of one or more species selected from alunites and alums with a Blaine specific surface area of 4000 cm.sup.2 /g or more or aluminum sulfate with a Blaine specific surface area of 2000 cm.sup.2 /g or more.
REFERENCES:
patent: 3902913 (1975-09-01), Helser et al.
patent: 4389359 (1983-06-01), Brunt
patent: 5188889 (1993-02-01), Nagatomi
patent: 5256349 (1993-10-01), Sato
Patent Abstracts of Japan, AN 07 140699, vol. 097, No. 002, Feb. 28, 1997, j0 08 253375, Oct. 1, 1996.
Chemical Abstracts, AN 139950n, vol. 84, No. 20, p. 301, May 17, 1996, JP 75 151 930, Dec. 6, 1975.
Derwent Abstracts, AN 93-030938, Jp 04 357 182, Dec. 10, 1992.
Asami Takuya
Iwanaga Tomoki
Oda Masaaki
Oshio Yasuhide
Sakiyama Masato
ASK Corporation
Derrington James
LandOfFree
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