| 摘要 |
PROBLEM TO BE SOLVED: To provide a coating film forming method capable of forming a uniform coating film by stabilizing the concentration of a gas on the surface of the coating film after coating in its early stages to markedly suppress the irregularity caused in the initial drying process immediately after coating. SOLUTION: The coating film forming method comprises a coating process for coating a running web 12 with the coating solution containing an organic solvent using a coating means 20, the initial drying process for evaporating the solvent of the coating solution in a drying zone 14 and a main drying process for heating the coating solution to evaporate a volatile component, wherein the length of the coating part 122 being the section between the coating means 20 and the drying zone 14 is 100-3,000 mm in the running direction of the web 12 and the pressure of the coating part 122 is made higher than the pressures of the drying zone 14 and a coating-before chamber 110. COPYRIGHT: (C)2008,JPO&INPIT |
