Lyocell fibers and methods of producing the same
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United States of America Patent
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Issued Date -
Dec 1, 2022
app pub date -
Sep 17, 2020
filing date -
Sep 17, 2020
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Abstract
Colored lyocell type fibers comprising respun coloured recycled fibers and method of producing the same. According to the method a raw-material of colored recycled textile fibers is provided and dissolved in an ionic liquid to provide a spinning dope. By spinning the dope using dry jet-wet spinning colored respun textile fibers can be manufactured. The invention provides for the simultaneous recycling of cellulose fibers and dyes from dyed cotton waste in the form of dyed lyocell fibers.
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