Back to results
US 4,456,637 AGranted
System for coating and removing excess material from a moving web
AssigneeFuji Photo Film Co., Ltd.
InventorsHideo Takeda, Tsunehiko Sato
Life of this patent
Estimating the term…
Abstract
A web coating method and apparatus includes a web scraping mechanism arranged after a coating section, the scraper being in the form of a wire bar. The scraping efficacy of the device is improved by forming the wire bar from small gauge wire wound upon a circular or polygonal rod, where the radius of curvature of the wire is 2 mm or less. If desired, the wire bar may be rotated relative to the web as scraping is effected.
Claims8
A method of coating a web, comprising;
- excessively applying a coating solution to a web which is continuously run along a predetermined web running path, to form a coated film on said web, abutting a scraping surface of a metering means against said coated film, while wet, to scrape off an excess amount of coating solution from said coated film, to allow said coated film to have a desired thickness, said scraping surface being made of a wound wire member having a radius of curvature of 2 mm or less.
A coating apparatus, comprising;
- coating means for applying a coating solution to a web, said web being continuously run along a predetermined web running path;
- and
- metering means having a scraping surface, said scraping surface being abutted against said web after said web has passed through said coating means, said scraping surface comprising a wire member with a radius of curvature of 2 mm or less.
Dependencies are inferred from the claim text.