Title:
建築ボード
Document Type and Number:
Japanese Patent JP4039697
Kind Code:
B2
Abstract:
A building board comprises a core of gypsum which has penetrated a glass fiber sheet embedded in one face and a coating of gypsum integral with the core material which has passed through the sheet. An apparatus for making such a board includes; a lower forming surface and an upper forming surface defining a forming zone between them in which the plasterboard is formed. A supply of a first slurry is provided to the lower forming surface. A supply of a second slurry is provided to a glass fiber sheet to coat the upper surface of the sheet with the second slurry. A device is provided for passing the coated sheet into the forming space, whereby the lower surface of the sheet contacts the upper surface of the first slurry. A vibrator roller is provided for vibrating the upper forming surface so that the first slurry passes through the sheet into the second slurry. A method of making the board is also disclosed.
Inventors:
John Walters
Girard, John
Girard, John
Application Number:
JP51136298A
Publication Date:
January 30, 2008
Filing Date:
August 19, 1997
Export Citation:
Assignee:
BP Bee Public Limited Company
International Classes:
E04C2/04; B28B19/00; B28B23/00; B32B5/00; B32B13/02
Domestic Patent References:
| JP61078938U | ||||
| JP63111516U | ||||
| JP48015523U | ||||
| JP52162487A |
Foreign References:
| US4816091 |
Attorney, Agent or Firm:
Nobuaki Kazehaya