Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Noninterengaged fiber-containing paper-free web or sheet...
Patent
1998-08-19
1999-09-14
Copenheaver, Blaine R.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Noninterengaged fiber-containing paper-free web or sheet...
162123, 1621811, 428703, 442326, B32B 526, B32B 1302, B32B 1304
Patent
active
059520876
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.
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Derwent Abstracts, AN 93-030938, JPA 04 357 182, Dec. 10, 1992.
Asami Takuya
Iwanaga Tomoki
Oda Masaaki
Oshio Yasuhide
Sakiyama Masato
ASK Corporation
Copenheaver Blaine R.
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