Powder resin flow inspection method and powder resin flow inspection apparatus
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United States of America Patent
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Oct 25, 2022
Grant Date -
Sep 24, 2020
app pub date -
Mar 20, 2020
filing date -
Mar 22, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A flow inspection method includes: a flow step of making powder resin flow in a housing portion of a flow tank; a viscosity measurement step of measuring a viscosity of the powder resin flowing in the housing portion; and a judgment step of judging whether or not an estimate of a bulk density of the powder resin flowing in the housing portion is less than or equal to a bulk density permissible value, the estimate being obtainable from a correlation, calculated in advance, between the bulk density and a viscosity of the powder resin flowing in the housing portion, and a measured value of the viscosity obtained in the viscosity measurement step.
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