| 摘要 |
This invention provides a production process of a functional film using a drying apparatus for preparing a functional film having a high quality with high productivity, a transfer apparatus and a process for producing the same, a functional film having a hardcoat layer produced using the transfer apparatus, and a functional film having an antireflection layer. The production process comprises coating a coating liquid onto a support being continuously transferred to form a coating film and then spraying, in drying, gas from a transfer apparatus, having a plurality of blowout ports arranged in the direction of transfer of the support, onto the support on its noncoated face side, whereby the support is transferred while levitating and supporting the support to produce the functional film and is characterized in that the transfer apparatus comprises a concave part alternated with a convex part provided with a blowout port in the transfer direction, and, regarding the plurality of the adjacent convex part and concave part, the gas is ejected from the blowout port so that the difference of the back pressure between the convex part and the support on its noncoated face from the back pressure between the concave part adjacent to the convex part and the support on its noncoated face is not less than 10 Pa and not more than 1000 Pa. |
