Patent ID: 7361382

Claim:
A method for manufacturing a coated sheet to form a coated layer by a process including a process ( 1 ) for coating a coating liquid including a resin material and a solvent on a substrate, and a drying process ( 2 ) for drying a coated liquid, wherein the drying process ( 2 ) is a process of performing at least an initial drying of drying the coated liquid, this coated liquid being a coated liquid having an initial viscosity of 0.1 to 20 [mPa· s] at 250C, at ordinary temperature without using any dry wind at a constant-rate drying stage, and a heat drying of using dry wind to dry the coated liquid at a decreased-rate drying stage after the initial drying, a drying speed of the coated liquid in the drying process ( 2 ) is set 0.3 [g/m 2 s] or less and at the decreased-rate drying stage, the drying is continued until a viscosity of the coated liquid at a drying temperature reaches at least 50 [mPa·s] while the viscosity of the coated liquid being raised with time, and further after the viscosity of the coated liquid at the drying temperature reaches 50 [mPa·s], a residual solvent in the coated liquid is further dried so that the viscosity of the coated liquid at the drying temperature may not become 50 [mPa·s] or less.