Pneumatic tire reinforced with composite nylon cord

Abstract

Abstract PURPOSE:To make improvements in equality, steering stability, durability and adhesion, by using such a cord as being made up of twisting a high-speed spinning fiber of specified material nylon 66 and an aromatic polyamid fiber together, for a carcass ply. CONSTITUTION:Fused nylon 66 of more than 205 in relative viscosity is spun out, while such a cord as being made up of twisting at least a piece of nylon yarn below 13% in a size coefficient of variation formed by bundling a lot of high- speed spinning nylon filaments being processed in heat treatment under expansion of the spun yarn cooled and solidfied as extended so as to cause a coefficient of double refraction to become 20X10<-3>-40X10<-3> and at least a piece of aromatic polyamid yarn together. This cord is used for a carcass ply so that equality, durability, steering stability and adhesion are all improvable.

Inventors

• 👤 Yukio Komai
• 👤 駒井　幸夫
• 👤 Akihito Miyoshi
• 👤 三好　章仁

Bibliographic Details