To provide a tatami which is not only lightweighted, incombustible, and excellent in bending strength, but safe for the health and comfotable in usability, and in addition can easily deal with barrier free.
A tatami facing material 3 is laminated on the surface through a cushion material 2. As a floor material 1 of tatami in which a dampproofing material 4 is laminated and fixed on the back, a board-like molding in which the solid part of 0.5-50 weight part and the fibrous part of 0.5-50 weight part of a high molecular compound decomposable in water and of glass transition temperature in the range of 0°C-159°C are added to the solid part of 100 weight part of calcium silicate hydrate slurry composed of xonotlite as a main body, they are stirred, dispersed, molded by pressure dehydrating, and dried into specific gravity of 0.05-0.6, favorably 0.1-0.3, is used.
HIOKI KAZUO
AKAI JUN
NAKAI YOSHIYUKI
IOKURA YOSHIYUKI
YOSHIKAWA ISAO
