| 摘要 |
PURPOSE: To stably supply a coating layer having a still higher-grade surface condition by specifying the average center-line roughness of the surface layer of the roll. CONSTITUTION: In this reverse coating method, a coating soln. is supplied on the contact part between a metaling roll 11 and a coating roll, both rolls are rotated in reverse directions to transfer the coating soln. on the coating roll, and further a film to be coated wound on a backup roll is rotated in the reverse direction and coated. When a coating soln. contg. a large amt. of the resin varnish or filler having >=30 poise viscosity is used, the metaling roll 11 is formed by applying a hard chromium layer 2 on a columnar iron core 1, and further a surface layer 3 having a cell having 1-5μm center-line average roughness Ra of the roll surface is formed by carving. Accordingly, since the surface layer 3 has a finely roughened surface, a minute amt. of coating soln. is uniformly left on the roll surface layer 3 even after the roll surface is scraped by a doctor.
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