Apparatus for production of polymeric nanofibers
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United States of America Patent
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Mar 19, 2019
Grant Date -
Apr 23, 2015
app pub date -
Oct 22, 2014
filing date -
Oct 22, 2013
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Abstract
The present invention is directed toward an apparatus comprising a high speed rotating disk or bowl for nanofiber spinning from the rotational sheared thin film fibrillation at the enclosed serrations with the optimized stretching zone to produce the defects-free nanofibrous web and nanofibrous membrane comprising a nanofiber network with a number average nanofiber diameter less than 500 nm that yield the crystallinity higher than the polymer resin used in making the web.
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