Coating apparatus – Solid applicator contacting work – With work-handling or work-supporting
Patent
1974-07-03
1976-07-13
McIntosh, John P.
Coating apparatus
Solid applicator contacting work
With work-handling or work-supporting
118259, 118262, 101366, B05C 108
Patent
active
039687708
ABSTRACT:
A simplified press mounted, web-driven paper tinting unit especially useful for high speed presses and having low pressure, substantially clog-free, infinitely manually adjustable tinting fluid dispensing heads positioned proximal to underlying, freely rotatable tinting fluid-receiving rolls forming a part of the unit. The heads are preferably rotatable members having radially offset fluid delivery tubes and selectively movable betwen positions where all of the fluid from the latter directly impinges on the receiving rolls, to positions where at least a part of such fluid flows past the rolls for cyclic re-collection and reuse. In this manner, delivery of the tinting fluid to the web can be easily varied during tinting operations as desired without the need of flow-restricting metering valves or the like which are prone to clogging. The anti-clogging properties of the heads are enhanced by provision of relatively large diameter fluid conduits coupling a low pressure tinting fluid pump to the heads, which permits substantially unrestricted fluid flow to the latter under relatively low pressure. Coloration control is also facilitated through the use of flexible, synthetic resin, plate-like metering members positioned in spanning, tangential engagement with the tinting fluid-receiving rolls at points thereon forward of the areas where tinting fluid impinges. The metering members are operable to automatically yield in response to variable hydraulic pressures directed thereagainst from the accumulated tinting fluid on the rotating reception rolls to permit variable regulation of the quantity of tinting fluid ultimately applied to the moving web.
REFERENCES:
patent: 2205201 (1940-06-01), Iwaniw
patent: 2293691 (1942-08-01), Harrigan
patent: 2730989 (1956-01-01), Pearce
patent: 3018757 (1962-01-01), Loppnow
patent: 3205816 (1965-09-01), Heimlicher
patent: 3405006 (1968-10-01), Follrath
Didde-Glaser, Inc.
McIntosh John P.
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