| abstract |
[57] [Summary] [Problem] To accurately assemble the tip shape of a slot die coater. An upstream block 41 and a downstream block 42 having equal lengths La and Lb from the land to the back surface are placed on a jig 60, and a thickness T of 50 μm is placed between the downstream block 42 and the jig 60. The thickness gauge 44 was sandwiched. With the pressurizing device 61, both blocks are pressed against the jig 6 After fixing to 0, both blocks 41 and 42 were fastened. When the coating solution temperature during coating was 22 ° C., the blocks 41 and 42 during assembly were adjusted to be about 22 ° C. Application was performed after measuring the overbite length LO with an optical microscope. The wet film thickness of the coating film is 5 μm at 50 m / min. It applied so that it might become. For the web, cellulose triacetate having an alignment film layer formed on the surface in advance was used, and a methyl ethyl ketone solution of a liquid crystal compound was used as a coating solution. The degree of reduced pressure at the time of application was 1600 Pa, and the obtained coating film had a good surface shape without stepped unevenness. |