Extrusion type coating head.

摘要

The invention relates to an extrusion type coating head comprising a slit (18), a center line average roughness (Ra) of the slit inner surfaces (18a, 18b) being in a predetermined range of 5.0 mu m according to the present invention, and the straightness (W1) in the delivery direction of the coating solution thereof and the straightness (W2) in the perpendicular direction to the delivery direction thereof being in predetermined ranges, respectively, in preferred embodiments. Thereby, development of wrinkles and inclined elongation in the tape itself are prevented when wound on a roll, the productivity is increased, and the product quality is improved. <IMAGE>