Separation of fibers

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12215459
APP PUB NO 20220112658A1
SERIAL NO

17415978

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Abstract

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There is provided a method for separation of fibers in for instance recycled textile, starting with a mixture comprising cellulose fibers and non-cellulose fibers and then reducing the cellulose chain length of the cellulose fibers so that the limiting viscosity number determined according to ISO 5351 is in the interval 200-900 ml/g, mechanically breaking agglomerates of fibers into smaller pieces, adjusting the concentration of fibers to 0.1-4 wt %, and subjecting the mixture to flotation to remove the non-cellulose fibers. Non-cellulosic fibers such as synthetic fibers can be removed very specifically without or essentially without removing cellulose fibers in the mixture. This gives a very high degree of removal and simultaneously the yield is kept high because no or only few cellulose fibers are removed.

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Patent Owner(s)

  • CIRCULOSE AB

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lindström, Mikael Lidingo, SE 11 22
Mansoor, Zaheer Ahmad Kristinehamn, SE 3 0
Ternström, Michael Skoghall, SE 2 0
Tran, Carlström Amy Kristinehamn, SE 3 4

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