Fluid sprinkling – spraying – and diffusing – With viscosity or temperature responsive control means
Patent
1995-01-27
1997-10-28
Morris, Lesley D.
Fluid sprinkling, spraying, and diffusing
With viscosity or temperature responsive control means
239135, 162199, 162DIG6, B05B 1200, B05B 124
Patent
active
056809875
ABSTRACT:
The apparatus and method of the present invention generates and controls an air-atomized spray, for application of moisture to a moving sheet, such as paper or converted paper products (e.g. corrugated board). The air-atomized water spray is generated by mixing a metered quantity of water with a constant air volume. In a representative embodiment the water flow is metered by adjusting the axial position of a shut-off needle relative to a circular control orifice. The needle is positioned by pushing and pulling upon it with a thermally-expanded metallic element. The thermally expanded element is heated directly or indirectly, at a controlled rate, to produce the desired needle movement and resultant water flow. A series of such controllable nozzles can be mounted across the width of a sheet to permit localized, metered moisture application to each cross-machine control zone. Accurate, zonal control of the water application rate permits the localized moisture content of the sheet to be increased or decreased to meet quality control objectives.
REFERENCES:
patent: 3856206 (1974-12-01), Bell et al.
patent: 4209065 (1980-06-01), Ledent
patent: 4262844 (1981-04-01), Sekiya
patent: 4511083 (1985-04-01), Muller-Girand
patent: 4516928 (1985-05-01), Babington
patent: 5104311 (1992-04-01), Maughan et al.
patent: 5262955 (1993-11-01), Lewis
Morris Lesley D.
Qualitek Limited
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