JPH0361622B

This invention relates to an improved method for forming two or more coating layers on a fiber. A first coating liquid is applied by an applicator having a die (e.g. 101) that provides for the formation of a gap (e.g. 103) between the die and the first coated layer. A second die (e.g. 104) is located at the exit of the first die, with the second coating liquid flowing onto the fiber through a relatively narrow clearance (e.g. 106) between the first and second dies. The clearance is formed by die surfaces perpendicular to the fiber axis. This second die also provides for a gap, (e.g. 110) so that the second layer is applied at a "free surface" at the point of contact with the first coated layer. This approach eliminates turbulence and coating nonuniformities associated with prior art multiple coating techniques.