US 2008/0172903 A1 · METHOD FOR DRYING COATED FILM, AND APPARATUS THEREFOR

Abstract

According to the drying method and apparatus of the present invention, at first, the coated film on one end side of the support is more quickly dried than that on the other end side, because drying air is supplied from one end side of the support. Subsequently, the coated film on the other end side of the support is more quickly dried than that on one end side, because drying air is supplied from the other end side of the support. Accordingly, the method and the apparatus can diminish a difference between drying rates in on one end side and in the other end side of the long support, in the whole drying zone. Thus, the method and the apparatus can uniformly dry the support and inhibit the production of a dry spot.

Claims16

Dependent claims

A method for drying a coated film formed by applying a coating liquid containing an organic solvent onto a running long support, the method which sequentially conducts, immediately after the application, following steps in a drying zone where a coated surface to be dried of the running long support is surrounded:

a forward wind drying step of drying the surface of the coated film with a forward wind while running the long support in a forward wind zone in which such a drying air is supplied as to flow only in one direction from one end side to the other end side across the width of the long support;
and
a reverse wind drying step of drying the surface of the coated film with a reverse wind while running the long support in a reverse wind zone in which such a drying air is supplied as to flow only in one direction reverse to that in the forward wind zone, i.e., from the other end side to one end side across the width of the long support.

Dependencies are inferred from the claim text.

Method for drying coated film, and apparatus therefor

Life of this patent

Method for drying coated film, and apparatus therefor

Life of this patent

Abstract

Claims16