Adjustable blade coater

Details Adjustable blade coater Adjustable blade coater

1992-08-04

1993-09-07

Chin, Peter

Coating apparatus

Control means responsive to a randomly occurring sensed...

118123, 118126, B05C 1104, B05C 1102

Patent

active

052424987

ABSTRACT:
A web coater is provided with a doctor blade having an active edge or tip engaging the web at a predetermined position. The force applied by such active edge is adjusted by movement of jaws gripping the opposite edge of the blade. The jaws are moved along a curve empirically established to maintain the active edge of the blade in a predetermined fixed position during the adjustment. The angle of incidence of the active edge of the blade relative to the web is also maintained constant by pivoting a blade supporting frame about an axis coincident with the active edge. A controller is supplied with empirically established data developed by utilizing test blades to establish polynomial formulas having constants corresponding to each of the various blades intended to be used by the coater. The controller also automatically compensates for blade wear.

REFERENCES:
patent: 3220377 (1965-11-01), Good
patent: 4220113 (1980-09-01), Wohlfeil
patent: 4375202 (1983-03-01), Miller
patent: 4930440 (1990-06-01), Shirono
patent: 4966093 (1990-10-01), Sommer
patent: 5085168 (1992-02-01), Sollinger
patent: 5147462 (1992-09-01), Wollam

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