CONTINUOUS METHOD AND SYSTEM FOR THE PRODUCTION OF AT LEAST ONE POLYMERIC YARN AND POLYMERIC YARN
A polymeric yarn comprised of polyethylene, made according to a method comprising the steps of: mixing a polymer with a first solvent; homogenizing, rendering inert and dosing the mixture in an extruder, forming a homogeneous solution; dosing the solution in an orifice die to provide a shape of fila...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | A polymeric yarn comprised of polyethylene, made according to a method comprising the steps of: mixing a polymer with a first solvent; homogenizing, rendering inert and dosing the mixture in an extruder, forming a homogeneous solution; dosing the solution in an orifice die to provide a shape of filament yarn; immersing the solution with the shape of filament yarn in a quenching bath, wherein an air gap is maintained before the mixture achieves a surface of the liquid of a quenching bath forming a gel yarn; drawing the gel yarn; washing the gel yarn with a second solvent that is more volatile than the first solvent; drying the gel yarn forming a xerogel yarn; heat drawing the xerogel yarn forming a pre oriented yarn (POY); and heat drawing the POY forming a yarn; wherein the polymeric yarn has an elastic modulus of disoriented phases of greater than 2 GPa. |
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