POLYESTER MULTIFILAMENT YARN

PROBLEM TO BE SOLVED: To obtain a polyester multifilament yarn having improved physical properties, from which a treated cord having excellent dimensional stability and tenacity can be produced. SOLUTION: This polyester multifilament yarn is obtained by a method comprising a stage for subjecting a p...

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Bibliographische Detailangaben
Hauptverfasser: SAI SHOCHU, CHO INRAI, GO TOKUKO
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To obtain a polyester multifilament yarn having improved physical properties, from which a treated cord having excellent dimensional stability and tenacity can be produced. SOLUTION: This polyester multifilament yarn is obtained by a method comprising a stage for subjecting a polyester chip by a solid-phase polymerization, having 1.05-1.13 intrinsic viscosity, to melt spinning, a stage for quenching and solidifying the melt spun yarn, a stage for taking off the solidified yarn at a speed adjusted so as to have 0.06-0.09 double refractive index and 1.360-1.376 density, a stage for drawing the taken off yarn at a high temperature in 1.5-2.5 total draw ratio and has 2.5-3.5 denier single fiber fineness, 0.94-1.00 intrinsic viscosity, 0.65-0.9 wt.% DEG content, =27 silk factor.