Method for producing filaments of polyacrylonitrile and extrusion head for carrying out said method
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United States of America Patent
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Apr 28, 2020
Grant Date -
Jan 4, 2018
app pub date -
Dec 14, 2015
filing date -
Dec 19, 2014
priority date (Note) -
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Abstract
A method for producing filaments of polyacrylonitrile and an extrusion head for carrying out said method are provided, wherein the method comprises preparing a polyacrylonitrile polymer solution and passing said solution through an extruder plate that determines the formation of filaments, a central chamber being defined between the extruder plate and a floating plate connected to a vibrating system, said chamber being surrounded by a peripheral chamber into which the polymer solution is introduced under pressure. The polymer solution then passes through to the central chamber via small radial conduits that accelerate the material, and is subjected to vibration in the central chamber before passing through the extruder plate.
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