Monitoring concentration of dope in product manufacture
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United States of America Patent
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Apr 16, 1996
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N/A
app pub date -
Jul 8, 1994
filing date -
May 24, 1993
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Abstract
Continuous elongate members such as filaments are produced by forming a hot dope of cellulose, amine oxide and water, extruding the dope through a die assembly and precipitating the cellulose to form the bodies and maintaining the concentration of the dope at a predetermined value by monitoring the refractive index of the dope before it is extruded.
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