Title:
防カビ石膏ボードとその製造法
Document Type and Number:
Japanese Patent JP4413137
Kind Code:
B2
Abstract:
A mold-resistant gypsum panel includes a core of an interlocking matrix of calcium sulfate dihydrate crystals, a facing material on at least one side of the panel and a salt of pyrithione dispersed through both the core and the facing materials. A method of making a mold-resistant gypsum product is also provided. A slurry of calcined gypsum, water and a water-soluble pyrithione salt is formed, then deposited on a sheet of facing material. The slurry on the facing material is shaped into a panel and maintained under conditions sufficient for the calcined gypsum to react with the water to form a core comprising an interlocking matrix of set gypsum crystals. Heating of the panel causes evaporation of the water that did not react with the calcined gypsum.
Inventors:
Bella Mas Neni, Srinivas
Musselman, Rodney Philip
Musselman, Rodney Philip
Application Number:
JP2004517986A
Publication Date:
February 10, 2010
Filing Date:
June 27, 2003
Export Citation:
Assignee:
United States Gypsum Company
International Classes:
B28B1/30; B32B13/08; B28B5/02; C04B24/12; C04B24/16; C04B28/14; E04C2/04
Domestic Patent References:
| JP2000072521A | ||||
| JP4069301A |
Attorney, Agent or Firm:
Takehiko Saito
Yasuyuki Hata
Yasuyuki Hata