Process for laying fibrous webs from a centrifugal spinning process
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United States of America Patent
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May 15, 2018
Issued Date -
Sep 28, 2017
app pub date -
Apr 28, 2017
filing date -
Dec 21, 2011
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Abstract
A method for laying down a nanoweb of nanofibers from a centrifugal spinning process by a combination of an air flow field and a charging arrangement. Fibrous streams in the form of fibrils of molten polymer or polymer solution are discharged from a rotating member into an air flow field that is essentially parallel to the direction of discharge of fibrils at the point of discharge of the fibrils. The fibrous streams are attentuated and directed by means of the air flow field onto the surface of a collector to form a nanoweb. The fibrous streams are charged along all or at least a portion of their route from the point of discharge to the surface of the collector.
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