To vanish bubble mark on a surface of a cement plate in the case of easily forming a deeply engraved protrusion and recess pattern on the surface of the plate by providing a surface layer containing fine bubbles.
A one-layer flow-on molding method for lumbering by supplying cement slurry in a laminar state onto a felt belt 2 having a suction dehydrator 1 and suction dehydrating it comprises the steps of supplying the slurry obtained by mixing fine bubbles in a laminar state 3 onto the belt 2, stratifying it, then suction dehydrating it, then supplying cement slurry S not mixed with the bubble in a laminar state onto the layer 3, then cutting it in a size adapted to press molding to be described later, pressing the cut unhardened molding plate material, forming a protrusion and recess pattern on the surface, and then curing to harden it according to a conventional method.
Hashi, Kazuo
Kuwayama, Hiroki
Uematsu, Atsushi
