| 摘要 |
<p>PURPOSE:To obtain uniform film thickness distribution without generating a thick film, in an extrusion type coating device, by inserting at least a part of a slit gap prescribing member thinner than the gap of a slit into the slit. CONSTITUTION:A coating solution is applied to a web 1 running in the direction shown by an arrow by an extrusion type coating device 2. The coating device 2 is constituted of a front bar 3 and a back bar 4 and has a coating solution sump 5 and a slit 6 being a coating solution outflow port. The coating solution flowing out of the slit 6 is transferred along both surfaces of front and back edges 31,41. A slit gap prescribing member 7 thinner than the gap S of the slit 6 is provided in the slit 6. The position of the slit gap prescribing member 7 may be set to either one of the slit surfaces of the front and back bars 3,4 at a part where film thickness distribution is desired to be corrected.</p> |
