Flexible blade coating arrangement and method with compound blad

Details Flexible blade coating arrangement and method with compound blad Flexible blade coating arrangement and method with compound blad

1990-05-17

1991-12-31

Wityshyn, Michael

Coating processes

With post-treatment of coating or coating material

Solid treating member or material contacts coating

118126, 118413, 118419, B05C 1104

Patent

active

050770950

ABSTRACT:
Method and apparatus for applying a liquid film of controlled thickness to a paper web. The apparatus is in the form of a flexible blade coater having a flexible blade fixed at one end and bearing against a backing roll (with interposed web) at a free end. The blade has independent loading means, preferably pneumatic. An intermediate loading means applies a first load intermediate the fixed and free ends which serves primarily and substantially independently to establish blade geometry or tip slope. A second loading means positioned near the free end of the blade primarily and substantially independently establishes tip load for a given geometry established by the first loading means. The compound loading arrangement allows a wider range of finer control of coating film thickness.

REFERENCES:
patent: 3057327 (1962-10-01), Faeber et al.
patent: 3255038 (1966-06-01), Coghill
patent: 4880672 (1989-11-01), Ericksson
patent: 4934310 (1990-06-01), Wohrle et al.

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