Spinning-Drawing-winding device and combined machine for industrial bio-based polyamide
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United States of America Patent
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Issued Date -
Aug 8, 2024
app pub date -
Mar 14, 2024
filing date -
Sep 17, 2021
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Abstract
In a spinning-drawing-winding device and a combined machine for industrial bio-based polyamide, according to a traveling direction of a tow, two adjacent rotational directions among a rotational direction of the tow winding through the first pair of drawing hot rollers, a rotational direction of the tow winding through the second pair of drawing hot rollers, a rotational direction of the tow winding through the third pair of drawing hot rollers, a rotational direction of the tow winding through the fourth pair of drawing hot rollers are in opposite to spin an industrial bio-based polyamide filament of 55 dtex-2222 dtex.
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