Title:
GYPSUM BOARD
Document Type and Number:
WIPO Patent Application WO/2011/052048
Kind Code:
A1
Abstract:
Provided is a gypsum board which can sufficiently suppress bending, even when produced using a starting gypsum material that contains a large amount of water-soluble salts as impurities. Further, the gypsum board is unproblematic in compressive strength, hardening time, pH, and so on.
A gypsum board produced by filling a gypsum-containing slurry into a frame mold and hardening the slurry, wherein the slurry contains both calcined gypsum and 0.2 to 5.0 parts by mass of a cement per 100 parts by mass of the calcined gypsum.
Inventors:
FUJITA TAKUMI (JP)
HONDA HIDETAKA (JP)
TSUTSUMI KOUSUKE (JP)
HONDA HIDETAKA (JP)
TSUTSUMI KOUSUKE (JP)
Application Number:
PCT/JP2009/068465
Publication Date:
May 05, 2011
Filing Date:
October 28, 2009
Export Citation:
Assignee:
CHIYODA UTE CO LTD (JP)
FUJITA TAKUMI (JP)
HONDA HIDETAKA (JP)
TSUTSUMI KOUSUKE (JP)
FUJITA TAKUMI (JP)
HONDA HIDETAKA (JP)
TSUTSUMI KOUSUKE (JP)
International Classes:
C04B28/14
Foreign References:
| JPH11116319A | 1999-04-27 |
Attorney, Agent or Firm:
IRIYAMA Hiromasa (JP)
Hiromasa Iriyama (JP)
Hiromasa Iriyama (JP)
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