Semi-continuous method and apparatus for forming a heated and pr

Details Semi-continuous method and apparatus for forming a heated and pr Semi-continuous method and apparatus for forming a heated and pr

1991-11-15

1992-12-15

Jenkins, Robert W.

Agitating

With heating or cooling

Electrical heating

366152, 366162, 366336, B01F 1502, B01F 1506

Patent

active

051710897

ABSTRACT:
The present invention is directed to apparatus and methods for effectively supplying, feeding, measuring, proportioning, mixing, pressurizing, and heating on a semi-continuous basis, a plurality of fluids. Preferably, the fluids comprise at least one substantially non-compressible fluid, such as coating formulation, and at least one substantially compressible fluid, such as carbon dioxide, to form a substantially accurately proportionated coating admixture in the supercritical state of the compressible fluid for spraying the combined mixture through a spraying means onto a substrate to produce a coating. The process employs vessels having a known displacement volume to feed and proportion the fluids. The pressurization, mixing and heating is accomplished in an oscillation loop wherein the mixture is pressurized and heated while in such oscillation loop. A spray gun connected to the oscillation loop is used to spray the mixture.

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