COATING DEVICE AND COATING METHOD

To make the thickness of a coating film formed on both faces of a base material having an opening part uniform in a conveying direction.SOLUTION: A coating device 20 coats coating liquid C to both faces of a base material 2, and includes: first and second blocks 21, 22 which face to each other in a thickness direction of the base material 2; and a liquid pool part 23 which is formed so that the coating liquid C is pooled in a gap between the first and second blocks 21, 22 and through which the base material 2 is passed. The liquid pool part 23 includes: a base material introducing port 24 which opens to an upstream side in the conveying direction of the base material 2 and into which the base material 2 is introduced; a base material discharge port 25 which opens to a downstream side in the conveying direction and through which the base material 2 is discharged; and side face parts 26 which are located respectively at both sides in a width direction. The first and second blocks 21, 22 are each provided with a coating liquid supply port 31 facing the liquid pool part 23 and supplying the coating liquid C to the liquid pool part 23. The amount of the coating liquid C supplied to the liquid pool part 23 via the liquid supply port 31 is larger on the upstream side than that on the downstream side in the conveying direction.SELECTED DRAWING: Figure 2 【課題】開口部を有する基材の両面に形成される塗膜の厚みを、搬送方向に均一にする。【解決手段】塗工装置２０は、基材２の両面に対して塗液Ｃを塗布し、基材２の厚み方向に互いに対向する第１及び第２ブロック２１，２２と、第１及び第２ブロック２１，２２同士の隙間に塗液Ｃが溜まるように形成されるとともに、基材２が通る液溜り部２３と、を備える。液溜り部２３は、基材２の搬送方向における上流側に開口し、基材２が導入される基材導入口２４と、搬送方向における下流側に開口し、基材２が排出される基材排出口２５と、幅方向の両側にそれぞれ位置する側面部２６と、を含む。第１及び第２ブロック２１，２２には、液溜り部２３に臨み且つ液溜り部２３に塗液Ｃを供給する塗液供給口３１が設けられる。塗液供給口３１を介して液溜り部２３に供給される塗液Ｃの量は、搬送方向の下流側よりも上流側の方が、大きい。【選択図】図２