Nozzle and a method for the production of micro and nanofiber nonwoven mats
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United States of America Patent
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Jul 18, 2023
Grant Date -
Nov 21, 2019
app pub date -
May 11, 2018
filing date -
May 12, 2017
priority date (Note) -
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Abstract
The present invention is a novel gas assisted nozzle and a method for micro and nanofiber production. In this composite nozzle, a high velocity gas stream is introduced through a core protruding orifice, while a liquid is introduced via at least one satellite orifice, external to the core orifice. The liquid flow is picked-up and accelerated (blown) by the gas stream from the tip of the protruding gas nozzle. This avoids passing the high velocity gas over the surface of the slow flowing liquid and achieves the acceleration of the liquid flow on its approach to being picked-up by the gas stream. Proper control of the gas and the polymer liquid flow results in fine liquid blowing and formation of micro and nanofibers.
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