Patent ID: 8187674

Claim:
A method for coating an object-to-be-coated with a coating liquid containing dispersed particles, using a die wherein a coating-liquid ejection port is only a die-lip, comprising: flowing said coating liquid within the die; wherein a flowage of said coating liquid within a manifold provided within said die is such that deviation of an average flow rate of said coating liquid in a direction parallel to a longitudinal direction of the manifold becomes equal to or less than 60% of an average flow rate over an entire area of the manifold, in at least 80% of an area from a liquid supplying portion in said die to a side of the manifold placed longitudinally away from a liquid supplying portion at one side of the manifold to an opposite side of the manifold; said manifold is provided within a main body of the die, either such that the longitudinal direction of the manifold is parallel to the die lip as the coating-liquid ejecting port, or inclined toward a slot by an angle not more than 5 degrees about said liquid supplying portion as measured from an axis parallel to the die lip as the coating-liquid ejecting port, and said manifold is shaped such that the following equation is satisfied, assuming that a cross-sectional area of said manifold in a direction from the liquid supplying portion to an opposite end of the manifold is A, and a distance from a position of the manifold near said liquid supplying portion to the opposite end portion of the manifold is x, ∂ 2 ⁢ A ∂ x 2 ≥ 0.