Yoshino Gypsum Co., Ltd.

Ken Hayase

Shoichi Okazaki

Takumi Hatanaka

A calcined gypsum treatment apparatus has an agitating type of cooler provided with a cooling region for cooling the calcined gypsum, and a moisture supplying device for incorporating moisture into the calcined gypsum. The moisture supplying device includes a humid gas-feeding port which introduces humid gas including moisture or steam, directly into the cooling region. The calcined gypsum is introduced through a calcined gypsum introduction port into the cooling region, and the moisture is incorporated into the calcined gypsum to modify the calcined gypsum. The humid gas-feeding port is positioned in vicinity to the calcined gypsum introduction port so as to allow the spouted or delivered flow of the humid gas to be brought into contact with the calcined gypsum immediately after introduced into the cooling region.

Calcined gypsum treatment device and calcined gypsum treatment method

A gypsum board forming device () constitutes an apparatus of producing gypsum boards. A layered formation of a lower sheet (), an upper sheet () and a gypsum slurry () passes through a forming gate (). The forming device forms the formation into a plate-like configuration with use of upper and lower plates (). The upper plate () is constituted from a fixed substrate plate () and a movable plate (), and the movable plate is in surface-to-surface contact with the upper sheet of the layered formation. A plurality of actuators () is supported by the substrate plate. Each of the actuators applies an upward or downward load (P) to the movable plate locally for a local deformation of the movable plate owing to a deflection thereof. A gate size (T) is locally changed by displacement of the movable plate relative to the substrate plate.

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Tokyo, Japan

Ken Hayase