Coating apparatus

摘要

An apparatus for high speed manufacturing of thin-film coated products, wherein the coating thickness is even and the products do not contain uneven streaks. The apparatus includes a coating head having a frontedge disposed on an upstream side of a support, a backedge disposed on a downstream side of the support, and a top end receding stepwise away from the frontedge and away from the support. The backedge has an acute-angled top end portion. The coating apparatus is configured so that filtration central-line waves (WCA) are formed in a direction perpendicular to the direction of movement of the support. These waves are formed in slit inner surfaces, a frontedge surface and a backedge surface of a top end portion of the coating head. Each wave in these surfaces is less than or equal to 0.2 mu m in length.