Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
石膏スラリーに稠密層を形成するための方法および装置
Document Type and Number:
Japanese Patent JP2004528204
Kind Code:
A
Abstract:
A process for manufacturing plasterboard and a plasterboard manufacturing unit are provided, the process including feeding hydratable calcium sulphate and water into a first mixer (2) and into a second mixer (3); feeding in a facing (5); preparing a first gypsum slurry in the first mixer (2); preparing a second gypsum slurry in the second mixer (3); applying the first slurry onto the facing and forming a crude surface layer; applying the second slurry onto the crude surface layer and forming a crude core layer with a density lower than that of the crude surface layer; forming a plasterboard; hydrating and drying the board. This process allows the formation of the different layers of gypsum to be controlled independently.

Inventors:
Carre, Bruno
Jaron, Paul
Laurent, Jean-Louis
Rigordon, Michelle
Application Number:
JP2002589228A
Publication Date:
September 16, 2004
Filing Date:
May 10, 2002
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
Lafarge Plater
International Classes:
B28B1/30; B28B1/16; B28B13/02; B28B17/02; B28B19/00; B28C5/16; (IPC1-7): B28B13/02; B28B1/30; B28C5/16
Attorney, Agent or Firm:
Hironobu Onda
Makoto Onda