Title:
接合層にポリビニルアルコール結合剤を有する石膏板及びその製造方法
Document Type and Number:
Japanese Patent JP2005537149
Kind Code:
A
Abstract:
Paper and/or mat-faced gypsum board is prepared by applying a relatively thin coating of aqueous gypsum slurry containing a polyvinyl alcohol binder to one or two facer sheets. The polyvinyl alcohol binder provides adequate adhesion between the set gypsum core and the adjacent facer sheet(s) without the need for starch or other conventional binders. In one embodiment, polyvinyl alcohol is concentrated in one or more regions of the core adjacent to the facer sheet(s). In another embodiment, polyvinyl alcohol is applied to an aqueous gypsum slurry used to form the bulk core, such that the polyvinyl alcohol is present throughout the core.
More Like This:
| JP3216309 | SHEET MOLDING DEVICE |
| JP6275050 | The chalk wall which is suitable to wet or humid area |
| JP2023062804 | THREE-DIMENSIONAL MOLDING DEVICE |
Inventors:
Francis, Hubert Sea.
Xionjiku, Ann H.
Sue Guera, Fabio E.
Xionjiku, Ann H.
Sue Guera, Fabio E.
Application Number:
JP2004530804A
Publication Date:
December 08, 2005
Filing Date:
July 30, 2003
Export Citation:
Assignee:
G-P Gypsum Corporation
International Classes:
B28B1/30; B28B3/12; B32B13/04; B32B13/08; C04B24/26; C04B28/14; E04C2/04; (IPC1-7): B28B1/30; B28B3/12; B32B13/08; E04C2/04
Attorney, Agent or Firm:
Hironobu Onda
Makoto Onda
Makoto Onda