Coating apparatus – Immersion or work-confined pool type – Work-confined pool
Patent
1983-11-23
1985-12-17
McIntosh, John P.
Coating apparatus
Immersion or work-confined pool type
Work-confined pool
118413, B05C 502
Patent
active
045586586
ABSTRACT:
A device for coating a continuous web that travels over a back-up roll. The force of application can be adjusted. The coating material is applied to the web with a slotted applicator pipe. The pipe extends over the width of the web and has a preliminary coating-material flow-regulating gap. The width of the gap can be adjusted. A coating-material flow-regulating lip and a return lip adjoin the gap in such a way as to constitute a coating-material flow-regulating chamber extending over the width of the web. The flow-regulating lip is a doctor bed and has a doctor batten that moves with little friction along at least one overflow-side slide face. The face of the doctor batten toward the web that is being coated is rectangular and demarcates in conjunction with the web a narrowing wedge-shaped gap with a geometry that depends on the degree of contact pressure. The overflow edge of the face is a straight and sharp stripping edge. The face and stripping edge of the doctor batten are flexible. Its face is highly resistant to wear. The doctor batten is forced against the web by an inflatable means of exerting contact pressure between the batten and the bed.
REFERENCES:
patent: 3169082 (1965-02-01), Krikorean
patent: 3192895 (1965-07-01), Galer
patent: 3450098 (1969-06-01), Williams, Jr.
patent: 3521602 (1970-07-01), Coghill
patent: 4250211 (1981-02-01), Damrau et al.
Sommer Herbert
Wohlfeil Gerhard
Jagenberg AG
McIntosh John P.
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