Title:
木質セメント板、及びその製造方法
Document Type and Number:
Japanese Patent JP5118738
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 a method for manufacturing the same.SOLUTION: The woody cement board having a concavo-convex pattern on the surface is a molding in which a surface layer comprising a cement, a silica-containing material, wood fibers and wood flour is laid on a matrix layer comprising a cement, a silica-containing material and wood fibers, wherein, in the matrix layer and the surface layer, the cement and the silica-containing material are contained in a mass ratio of 3:7 to 7:3, and the wood flour in the surface layer is 0.3-1.5 mm in size and has been coated with calcium. The method for manufacturing the woody cement board comprises: a step of forming a matrix layer mat by dehydrating a slurry comprising water, a cement, a silica-containing material and wood fibers; a step of coating wood flour of 0.3-1.5 mm in size with calcium; a step of preparing a raw material mixture for a surface layer by mixing the resulting wood flour, a cement, a silica-containing material and wood fibers; and a step of sprinkling the resulting raw material mixture for a surface layer on the matrix layer mat and carrying out molding and curing.
Inventors:
Yasunori Yoshida
Eikyu Seido
Naoki Murase
Fumihiro Asakura
Hibino Yoshinori
Eikyu Seido
Naoki Murase
Fumihiro Asakura
Hibino Yoshinori
Application Number:
JP2010244291A
Publication Date:
January 16, 2013
Filing Date:
October 29, 2010
Export Citation:
Assignee:
Nichiha Corporation
International Classes:
C04B28/18; B28B1/16; B28B3/02; C04B16/02; C04B18/26; C04B20/10; C04B28/02
Domestic Patent References:
| JP3218955A | ||||
| JP8175861A | ||||
| JP2001139363A | ||||
| JP2002187759A | ||||
| JP9255397A | ||||
| JP6168358A | ||||
| JP82954A |