In the resin film forming method for extruding a fused resin from an extruder
die to form a resin film, the second resin forming both ends in width direction
of the resin film uses a resin greater in extension viscosity than the first resin
forming the center in width direction of the resin film. Thereby, even if production
conditions such as resin condition and operating conditions change, faults such
as neck-in and its resultant thickening at both ends of the resin film can be suppressed.
In the production of a laminate by nipping a support and a resin film of a thermoplastic
resin by means of a nip roller and a cooling roller while coating the resin film
onto the surface of the support, the accompanying air following the rotation of
the cooling roller to the nip point is shut off by blowing a gas permeable through
the resin film from a gas jet nozzle toward the surface of the cooling roller.
Thereby, the occurrence of craters can be inhibited, a laminate excellent in surface
appearance can be produced and the production of a laminate effective especially
at the time of a line speed rise in the laminate production is performable.
