Coating apparatus – Control means responsive to a randomly occurring sensed... – Responsive to attribute – absence or presence of work
Patent
1993-04-01
1996-09-24
Lamb, Brenda A.
Coating apparatus
Control means responsive to a randomly occurring sensed...
Responsive to attribute, absence or presence of work
118410, 118683, B05C 1100
Patent
active
055587160
ABSTRACT:
A coating machine comprising a backing roll and a lip-type nozzle with a doctor edge. The nozzle comprises a first chamber connected to the inlet, a passage, and an outlet for discharging the liquid coating material under pressure toward a web on the backing roll. The outlet comprises a recess in the upper wall of the nozzle body extending toward the doctor edge to form a second chamber at the outlet. A pressure sensor is arranged in the second chamber. A thickness sensor is arranged to detect the thickness of the coated layer. The nozzle is adjustably supported to the machine frame by the left-end, central, and right-end support means, which are controlled in accordance with outputs of the pressure sensor and the thickness sensor so as to obtain a uniform coating layer. Also, the speed of the pump for delivering a coating material is suitably controlled.
REFERENCES:
patent: 4704296 (1987-11-01), Leanna et al.
patent: 4776997 (1988-10-01), Chino
patent: 4899691 (1990-02-01), Fritzgerald, Jr. et al.
patent: 5147462 (1992-09-01), Wollam
Matsumoto Takeshi
Mitani Shigetoshi
Hirano Tecseed Co., Ltd.
Lamb Brenda A.
Meller Michael N.
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