Abstract: The present invention is directed to a method and a system for the production of at least one polymeric yarn comprising means for mixing a polymer (1) with a first solvent yielding a mixture; means for homogenizing the mixture; means for rendering the mixture inert (21, 22, 23); means for dipping the mixture into a quenching bath (30), wherein an air gap is maintained before the mixture reaches the quenching bath (30) liquid surface forming at least one polymeric yarn; means for drawing (41) the at least one polymeric yarn at least once; means for washing (5) the at least one polymeric yarn with a second solvent that is more volatile than the first solvent; means for heating the at least one polymeric yarn (6); means for drawing at room temperature (7) the at least one polymeric yarn at least once; and means for heat drawing (8) the at least one polymeric yarn at least once.
Type:
Grant
Filed:
October 29, 2014
Date of Patent:
September 21, 2021
Assignee:
Braskem America, Inc.
Inventors:
Marcos Roberto Paulino Bueno, Andre Penaquioni, Alessandro Bernardi, Sergio Luiz Dias Almeida, Leandro Ohara Oliveira Santa Rosa, Patricia Freitas Oliveira Fialho, Daniela Zaira Rauber