Patent ID: 8627782

Claim:
An apparatus for coating an object-to-be-coated with a coating liquid containing dispersed particles, using a die, wherein said die comprises: a die main body constituted by a pair of die plates; a manifold formed within said die main body for distributing the coating liquid in a direction of width, wherein the distribution of the coating liquid is terminated at an end portion of the manifold; a liquid supplying portion provided in at least any one of said pair of die plates for supplying the coating liquid to said manifold; a slot formed between the pair of die plates so as to extend from said manifold to a front edge of the die main body; and a die lip provided at the front edge of said die main body as a coating-liquid ejecting port, and said manifold is provided within the die main body, either in parallel to the direction of the width of said die or to be inclined toward said slot by an angle not more than 5 degrees about said liquid supplying portion, and said manifold is shaped such that the following equation is satisfied, assuming that a cross-sectional area of said manifold in a direction of a longitudinal cross-sectional area is A, and a distance from a predetermined position near said liquid supplying portion to the end portion of the manifold is x, ∂ 2 ⁢ A ∂ x 2 ≥ 0.