Conventional techniques for forming ultraviolet- or infrared-screening
coating films have the problem of requiring several recoating steps in
order to attain a desired coating weight and therefore failing in forming
high-strength coating films and the problem of causing uneven coating,
mottling, spotting, blushing, partial breakage, or cracking in some
working atmospheres. In order to solve the problems, a coating fluid
comprising at least an ultraviolet-screening agent and/or an
infrared-screening agent, a binder and a polyhydric alcohol base solvent
and having a polyhydric alcohol content of 50 to 95 wt % is applied to a
substrate with a coater whose ejection nozzle has a tip diameter of 0.5
to 3.0 mm and which is equipped with a blower for forming an air curtain
at an ejection pressure of the nozzle of 0.01 to 0.098 MPa and then dried
to form a film containing an ultraviolet-screening agent and/or an
infrared-screening agent on the surface of the substrate.