| 摘要 |
PROBLEM TO BE SOLVED: To provide a coating film drying device capable of suppressing drying irregularities while keeping an efficient drying capability in a film forming step requiring precise film thickness control.SOLUTION: The drying device dries the coating film continuously applied with a coating liquid to a traveling belt-like flexible base material by a coating head, while allowing the base material to travel in a direction opposite to the gravitational direction. The drying device includes a slit plate which is provided close to the coating film surface side of the base material, having a size equal to or larger than the coating film surface in the width direction and provided with a plurality of slits, an air distributing/exhausting means which has an air distributing means and an air exhausting means on a side opposite to the base material relative to the slit plate, and a means for heating the base material, which is provided on a side opposite to the slit plate relative to the base material. The plurality of slits of the slit plate are formed inclined to the traveling direction of the base material, an opening on a side close to the base material of the slits is on the upper side in the gravitational direction, and an opening on a side away from the base material of the slits is on the lower side in the gravitational direction. |
