Method to space dye yarn
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United States of America Patent
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Feb 1, 2000
Grant Date -
N/A
app pub date -
Mar 6, 1998
filing date -
Mar 6, 1998
priority date (Note) -
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Abstract
This invention relates to a method and apparatus for space-dyeing yarns. A yarn sheet passes over a yarn-driven roll equipped with a digital sensor that tracks the position of the sheet as it then passes through a dyeing apparatus. A computer precisely controls the spray application of dyes at the desired locations on the length of the yarn sheet. Undyed areas and areas of unwanted overlap of dyes are virtually eliminated, reducing the amount of off-quality yarn produced versus conventional methods. Sprayed dye droplets are collected and reused.
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