Slide curtain coating apparatus and slide curtain coating method

摘要

To provide a slide curtain coating apparatus (4) and method for depositing a curtain of coating liquid (6) onto a running web, the apparatus and method capable of preventing the curtain from being condensed at its center region and preventing the resulting coating from having greater thickness at its edge regions. The coating apparatus includes: a slit (S) for discharging the coating liquid; a slide (1) on which the curtain flows down; and, a slide edge guide (2) along which the curtain flows and which is provided at both edges on the slide and each having auxiliary liquid supply means (2c) at the surface facing the slide; and auxiliary liquid supply means for discharging the auxiliary liquid from all over the surface thereof which touches the slide at the edge guide. The coating method includes discharging the auxiliary liquid from all over the surface of the auxiliary supply means coating apparatus.