Coating processes – Magnetic base or coating – Magnetic coating
Patent
1994-12-21
1995-10-17
Beck, Shrive
Coating processes
Magnetic base or coating
Magnetic coating
427209, 427356, 427358, 118410, 118411, B05D 312
Patent
active
054589134
ABSTRACT:
In a coating method of extruding a coating liquid through a slit of an extrusion-type coating head to coat a running web, at a starting or restarting of the coating, the coating liquid is extruded through the slit of the coating head while the coating head is away from the web, and then the coating is started while a slightly large clearance is kept between the coating head and the web at the upstream side of the coating head, thereafter changing the coating state or arrangement to a steady coating state. Therefore, occurrence of a thicker portion of the coating film on the web at the start of the coating can be prevented. Further, at the end or interruption of the coating, the coating state or arrangement of the coating head is changed from the steady coating state to a state wherein a slightly large clearance is kept between the coating head and the web at the upstream side, and the coating head is moved away from the web to end the coating. Therefore, occurrence of a thicker portion of the coating film on the web at the end of the coating can be prevented. With this arrangement, at the start, restart, end and interruption of the coating, a uniformly coated film can be also formed on one surface of the web whose other surface has already been coated with a coating liquid.
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patent: 5202164 (1993-04-01), Takahashi et al.
Patent Abstracts of Japan, vol. 11, No. 307 (C-450), JP 62 095169, May 1, 1987.
English Abstract of Japanese Docket No. 62-95169, dated May 1, 1987.
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Katai Kazuo
Onozawa Katsumi
Shimizu Yutaka
Tsunoda Eizo
Watanabe Eiichi
Bareford Katherine A.
Beck Shrive
TDK Corporation
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