MULTI-LAYER COATING METHOD, AND PLANOGRAPHIC PRINTING PLATE AND MANUFACTURING METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide stable coating without coating defects such as poor coating, liquid repellency and coating streak when a non-contact coater is used as a coating device for the upper layer to conduct sequential multi-layer coating.

SOLUTION: A sequential multi-layer coating method comprises: applying a photosensitive layer protection layer (A) L1 with a rod coating device 14 onto a continuously traveling web 12; and applying a photosensitive layer protection layer (B) L2 with an extrusion coating device 16, wherein W/[U(γ1-γ2)]≥0.018...(A1) is satisfied when W (cc/square meter) represents a wet coating amount of the photosensitive layer protection layer (B) L2; U (m/min) represents a traveling speed of the web 12; γ1 (mN/m) represents a dynamic surface tension of the photosensitive layer protection layer (B) L2; and γ2 (mN/m) represents a static surface tension of the photosensitive layer protection layer (A) L1.

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