Patent ID: 6967058
Filing Date: 2005-11-22
Classification: B60C,D01F,D02G,D10B,Y10T

Abstract:
1. A polyester multifilament yarn for rubber reinforcement, produced according to the method comprising: A) melt-spinning polyester, containing 95 mole % or more ethylene terephthalate as a repeating unit, passing the spun polyester through a retarded cooling zone (heating or non-heating zone) and a cooling zone to enable the spun polyester to be solidified to produce an undrawn yarn with an intrinsic viscosity of 0.83 or more and a density of 1.338 g/cm B) multi-stage drawing the undrawn yarn such that a draw ratio is 1.5 to 2.5, and heat-setting a resulting yarn to produce a drawn yarn with a density of 1.38 to 1.3865 g/cm and having a density of 1.38 to 1.3865 g/cm