Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Surface tension
Patent
1995-11-22
1997-01-07
Williams, Hezron E.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Surface tension
73 5401, 356 73, G01M 308
Patent
active
055905609
ABSTRACT:
An apparatus and method to measure different properties of a liquid film or coating traveling or resting on a horizontal support, including dynamic viscosity, dynamic surface tension and surface dilational elasticity, the apparatus comprising: a series of wires placed above a moving wet film or coating to which high voltage is applied inducing an electrostatic field that lifts the free surface of said film preferentially near the wires; a means for detecting the free surface displacement of the free surface in the section where the voltage is applied to the coating, possibly the means being a CCD camera coupled to a digital acquisition system; and means for processing the signal to determine the properties of the coating.
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Anders Alfred K.
Joos Felipe M.
Bocchetti Mark G.
Eastman Kodak Company
Politzer Jay L.
Rosenstein Arthur H.
Williams Hezron E.
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