Title:
セメント質ボードの製造方法
Document Type and Number:
Japanese Patent JP5410757
Kind Code:
B2
Abstract:
A method of accelerating the setting reaction of calcium sulphate hemihydrate and water comprises the steps of mixing water and calcium sulphate hemihydrate to produce a slurry, adding an accelerator to said mixture, and applying ultrasonic energy to said mixture. Application of ultrasound to the plaster slurry accelerates crystallization and thus reduces the setting time. A further benefit is reduced density of the wall boards.
Inventors:
Okee, Sam
Shahei, Parnica
Shahei, Parnica
Application Number:
JP2008536133A
Publication Date:
February 05, 2014
Filing Date:
October 17, 2006
Export Citation:
Assignee:
BP Bee Limited
International Classes:
B28B1/00; B01F11/02; B28B1/30; B28B5/02; B28B13/02; C04B22/14; C04B28/14; C04B40/00
Domestic Patent References:
| JP2000006137A |
Foreign References:
| WO2003068469A1 | ||||
| WO2004035505A1 | ||||
| DE2318439A1 |
Attorney, Agent or Firm:
Hiroe Associates Patent Office