Doctor blade for paper coater

Details Doctor blade for paper coater Doctor blade for paper coater

1987-04-06

1988-10-25

McIntosh, John P.

Coating processes

With post-treatment of coating or coating material

Solid treating member or material contacts coating

118410, 118413, 118126, B05D 312, B05C 502

Patent

active

047803363

ABSTRACT:
An improved doctor blade, for use at a downstream end of a pressurized coating material application zone of a paper coater, has a tip portion of a limited length and first thickness and a major body portion of a second and increased thickness. The increased thickness of the major body portion enables the doctor blade to resist flexure caused by variations in pressure of the coating material in the zone, so that the blade tip more uniformly meters and levels coating on a paper web. Also contemplated is an arrangement for clamping the blade at the downstream end of the application zone, in a manner to minimize flexure of the blade in response to variations in pressure of the coating material in the zone.

REFERENCES:
patent: 4133917 (1979-01-01), Wallsten
patent: 4250211 (1981-02-01), Damrau et al.
patent: 4405661 (1983-09-01), Alheid

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