Method and device for producing substantially endless fine threads
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United States of America Patent
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Apr 12, 2011
Grant Date -
May 27, 2004
app pub date -
Dec 21, 2001
filing date -
Dec 22, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to a method and a device for producing substantially endless fine threads from polymer solutions, especially spinning material for lyocell, wherein the spinning material is spun from at least one spinning hole or a spinning slot. The spun thread or film is drawn by high-speed accelerated gas flows using a Laval nozzle whose narrowest cross-section is located beneath the point where the spinning material exists. The threads are arranged on a strip in the form of a non-woven or are taken up in the form of a yarn and are subsequently separated in spinning baths by means of solvents.
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