Coating apparatus.

摘要

A coating apparatus for forming one or more coating layers on a substrate by means of an extrusion-type head comprising a front edge located on an upstream side with respect to a moving direction of the substrate and a back edge which is located on a downstream side in the moving direction of the substrate. The back edge has a corner portion partially defining an extrusion slot and which is displaced further from the substrate than the front edge in a state in which a precoating solution comprised mainly of an organic solvent is applied in advance on a coating surface of the substrate. A chamfered surface is formed on the corner portion. According to the invention, an angle alpha formed by the chamfered surface and a downstream inclined surface of the back edge is such that 40 DEG </= alpha </= 140 DEG , an angle beta formed by chamfered surface and an upstream inclined surface of the back edge is such that 40 DEG </= beta < 180 DEG , and a width L (mm) of the chamfered surface is such that 0.002 </= L. Further, an angle theta formed by the downstream inclined surface of the back edge and the substrate which extends gradually away from the head is set to not less than 25 DEG . <IMAGE>