Coating processes – With post-treatment of coating or coating material – Solid treating member or material contacts coating
Patent
1989-10-17
1992-04-28
Beck, Shrive
Coating processes
With post-treatment of coating or coating material
Solid treating member or material contacts coating
118126, 162361, 427444, B05D 312
Patent
active
051087944
ABSTRACT:
A deflection compensated doctor blade (1) and method for coating a moving web and scraping a backing member (5). The deflection of the doctor blade is compensating by first determining the deflection of the doctor blade and then adapting appropriately selected, non-continuous forces to be exerted on the doctor blade (1) so as to achieve by these forces such deformations in the doctor blade that have an equal magnitude but an opposite direction in relation to those caused by blade loading on the doctor blade (1). This approach results in the nullification of the superimposed deflection (11). The forces are adapted to be exerted at a determined distance (RT) from the pivotal bearing points of the doctor blade (1) and at a determined distance (RV) from the pivotal axis (3) of the doctor blade.
REFERENCES:
patent: 3748686 (1973-07-01), Winterburn et al.
patent: 3955531 (1976-05-01), Brown
patent: 4331713 (1982-05-01), Girard et al.
patent: 4367120 (1983-01-01), Hendrikz
patent: 4373445 (1983-02-01), Kobler
patent: 4665859 (1987-05-01), Dunlap et al.
patent: 4907528 (1990-03-01), Sollinger
Beck Shrive
Owens Terry J.
Valmet Paper Machinery Inc.
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