JPS6451357A - Production of anhydrous gypsum board by paper making process - Google Patents
Production of anhydrous gypsum board by paper making processInfo
- Publication number
- JPS6451357A JPS6451357A JP20418087A JP20418087A JPS6451357A JP S6451357 A JPS6451357 A JP S6451357A JP 20418087 A JP20418087 A JP 20418087A JP 20418087 A JP20418087 A JP 20418087A JP S6451357 A JPS6451357 A JP S6451357A
- Authority
- JP
- Japan
- Prior art keywords
- gypsum
- anhydrous gypsum
- molded
- gypsum board
- board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
PURPOSE:To produce an anhydrous gypsum board of high quality and performance by molding the slurry containing an anhydrous gypsum II, short fiber and gypsum-hardening accelerator as the main constituents, and then cold-curing the molded gypsum board from the beginning at a given temp. and humidity to accelerate the rate of hydration of the gypsum board and to improve the productivity of the board. CONSTITUTION:The raw material containing 98$60wt.% anhydrous gypsum II, 2-40wt.% short fiber, and a gypsum-hardening accelerator as the main constituents is prepd. Then, the slurry is obtained by incorporating 3-15 times in quantity of water with said raw material and stirring the incorporated mixture with a pulper. Said mixed slurry is homogenized in a chest, and is molded in sheet form by using a cylinder machine or Fortlinear machine. An edge part of this molded sheet is cut, pressure-molded, and hardened thereafter by the hydration through a given cold curing from the beginning to produce the target anhydrous gypsum.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20418087A JPH0825784B2 (en) | 1987-08-19 | 1987-08-19 | Method for producing anhydrous gypsum papermaking board |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20418087A JPH0825784B2 (en) | 1987-08-19 | 1987-08-19 | Method for producing anhydrous gypsum papermaking board |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6451357A true JPS6451357A (en) | 1989-02-27 |
JPH0825784B2 JPH0825784B2 (en) | 1996-03-13 |
Family
ID=16486161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20418087A Expired - Lifetime JPH0825784B2 (en) | 1987-08-19 | 1987-08-19 | Method for producing anhydrous gypsum papermaking board |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0825784B2 (en) |
-
1987
- 1987-08-19 JP JP20418087A patent/JPH0825784B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0825784B2 (en) | 1996-03-13 |
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