Nichiha Corp.

Naoki Sugiyama

Toshikatsu Homma

[Object] To provide a fiberboard manufacturing method that is suitable for efficiently manufacturing a fiberboard in which warpage is suppressed, and to provide a fiberboard that is obtained by such a fiberboard manufacturing method. [Solution] The fiberboard manufacturing method of the present invention includes the following pulp crushing step S, mat forming step S, and hot-pressing step S. In the pulp crushing step S, pulp dispersed in water is beaten in a gap between opposed blades to thereby produce a plant-based fiber material that has a particle size D50 of 50 to 110 μm and a freeness value of 150 to 300 ml and that contains an adhesive component. In the mat forming step S, a mat is formed from the plant-based fiber material. In the hot-pressing step S, by hot-pressing the mat, a fiberboard is formed from the mat through a process of plasticizing the adhesive component in the mat.

Fiberboard manufacturing method and fiberboard

An inorganic board is formed of an aluminosilicate setting material, a wooden reinforcing material and an aggregating agent. The wooden reinforcing material is covered by the aggregating agent, and this agent is covered by the aluminosilicate setting material. A method of manufacturing the inorganic board has the steps of covering a wooden reinforcing material with an aggregating agent; producing a starting material mixture by mixing the thus-obtained wooden reinforcing material with an aluminosilicate powder, an alkali metal hydroxide and water glass; and molding and curing the thus-obtained starting material mixture.

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Nagoya, Japan

Naoki Sugiyama