| 摘要 |
PROBLEM TO BE SOLVED: To manufacture sheets having a flat surface which are not parallel to each other by changing a gap value by the function of each sectional position from one step to the next step until the section of the prescribed dimension is given to the sheets. SOLUTION: A device comprises a means which prevents a movable plate from being moved toward a counter plate 161 and keeps the prescribed gap according to each step between both plates, and a means which commands the movement of a sheet 2 for each step and the movement of the movable plate 162 in a successive and alternate manner, and changes the gap value between one step and the next step. The plate 162 and the counter 161 are brought close to each other with the first gap value J therebetween, the plate 162 and the counter plate 161 are separated from each other by the movement of the step P, and then, the plate 162 and the counter plate 161 are brought close to each other with the second gap value therebetween slightly smaller than the first gap value J. |
