Helical barrel rheometer
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United States of America Patent
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Jan 13, 1998
Grant Date -
N/A
app pub date -
May 7, 1996
filing date -
May 7, 1996
priority date (Note) -
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Abstract
A rheometer and method for determining rheological characteristics of a composition, the rheometer including: a housing member; a helical flange disposed on an inner surface of the housing member; a rotor disposed concentrically within the helical flange and abutting the helical flange while maintaining sliding contact with the flange, wherein the rotor and the helical flange form a helical channel; a mechanism for rotating the rotor; a mechanism for introducing a sample of the composition into one end of the channel; a mechanism for controlling removal of the sample from the other end of the channel; and a mechanism for measuring a pressure difference of the sample between an upstream location and a downstream location in the channel.
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