Title:
木質セメント板、及びその製造方法
Document Type and Number:
Japanese Patent JP5118737
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a woody cement board excellent in surface designability, bending strength and long-term durability, and to provide a method for manufacturing the same.SOLUTION: The woody cement board having a concavo-convex pattern on the surface is a molding comprising a cement, a silica-containing material, wood fibers and wood flour, wherein the cement and the silica-containing material are contained in a mass ratio of 3:7 to 7:3, the wood flour is 0.3-1.5 mm in size and is coated with calcium, and a total content of the wood fibers and the wood flour is ≤9 mass% relative to the total solid content of the woody cement board. The method for manufacturing the woody cement board comprises: a step of coating wood flour of 0.3-1.5 mm in size with calcium by mixing the wood flour with a cement composition, a calcium-containing material or water obtained by dehydrating a slurry, and agitating the resulting mixture in water adjusted to a specific solid concentration; a step of preparing a slurry by mixing the resulting wood flour, a cement, a silica-containing material and wood fibers; and a step of pouring the resulting slurry in a flame and carrying out dehydration, molding and curing.
Inventors:
Yasunori Yoshida
Eikyu Seido
Naoki Murase
Fumihiro Asakura
Hibino Yoshinori
Eikyu Seido
Naoki Murase
Fumihiro Asakura
Hibino Yoshinori
Application Number:
JP2010244268A
Publication Date:
January 16, 2013
Filing Date:
October 29, 2010
Export Citation:
Assignee:
Nichiha Corporation
International Classes:
C04B28/18; B28B3/02; C04B16/02; C04B18/26; C04B20/10; C04B28/02
Domestic Patent References:
| JP2002103318A | ||||
| JP9255397A | ||||
| JP6168358A | ||||
| JP82954A |