Tapered multifilament yarn and process for producing the same
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United States of America Patent
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Mar 14, 2017
Grant Date -
Jun 25, 2009
app pub date -
Dec 28, 2006
filing date -
Jan 18, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A process for producing a tapered multifilament yarn comprising feeding a drawable filament to a drawing apparatus and changing the take-over speed relative to the feed speed of the filament in order to change the thickness of the filament in a longitudinal direction, characterized by making the take-over speed slower than the feed speed under heating in a part of the filament in the longitudinal direction and thereby shrinking and thickening the part of the filament. According to the process, the ratio of the thickness of the thickest part of the tapered multifilament yarn to the thickness of the thinnest part thereof can be easily increased.
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International Classification(s)
- D01D:MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE....
- D04C:BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-....
- A01K:ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; ....
- D02J:FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS....
- D06M:TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D0....
- D02G:CRIMPING OR CURLING FIBRES, FILAMENTS, YARNS, OR T....
- D01F:CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL....
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