APPARATUS AND METHOD FOR MANUFACTURING GYPSUM BOARD

摘要

A gypsum board forming device (10) constituting a gypsum board manufactur ing apparatus forms a laminate of a lower sheet (1), an upper sheet (2) and a gypsum slurry (6) passing through a forming gate (40) into a plate shape b y upper and lower plates (20, 30). The upper plate (20) is constituted of a fixed base plate (21) and a movable plate (22). The movable plate comes into face contact with the upper sheet of the laminate. Lifting drive devices (5 0) are supported on the fixed base plate. The lifting drive devices locally exert a vertical load (P) on the movable plate to locally deform the movable plate. A gate dimension (T) locally changes due to the displacement of the movable plate relative to the fixed base plate.