Polyamide dipped cord yarns having excellent strength utilization and method for producing the same

摘要

The present invention relates to a polyamide dope cord yarn having a strength utilization rate of 95% or more and a strength of 8.0 g / d or more, a cut elongation of 20% or more and a crystallinity of 40% or more, Polyamides were melt-spun, stretched in four or more stages, and heat-treated to produce a polyamide stretched yarn having a cut elongation of 30% or more, a strength of 7.5 g / d or more, and a crystallinity of 15 to 30% And more than 5% of tension is applied in the section.;The polyamide dope cord of the present invention has high strength utilization (95% or more), high strength and high toughness.