Unlock instant, AI-driven research and patent intelligence for your innovation.

Polyester polyfiber yarn immersion cord

A technology of impregnating cords and polyesters, applied in the direction of single-component polyester artificial filaments, filament/thread molding, yarns, etc., which can solve the problems of polyester multi-fiber yarns such as easy damage, strength drop, and damage. Achieve tough and flexible shrinkage, low shrinkage, good dimensional stability and toughness

Inactive Publication Date: 2010-06-16
株式会社科隆
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the highly oriented yarn is soaked in the rubber solution for heat treatment, the crystalline part is destroyed as the inhomogeneity of the molecular chain deteriorates, resulting in a decrease in strength.
As a result, polyester multifilament yarns are more susceptible to damage due to the series of post-processing processes they are subjected to

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polyester polyfiber yarn immersion cord
  • Polyester polyfiber yarn immersion cord
  • Polyester polyfiber yarn immersion cord

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 5 and comparative example 1 to 4

[0098] Polyester chips having an intrinsic viscosity of 0.65 prepared by solid polymerization were melt-spun through a spinneret having 300 holes (the diameter of the holes was 0.60 mm) under the conditions specified in Table 1. The molten resin was filtered with a filtration retention time of 8 minutes. A 200 mm long sleeve was placed immediately below the spinneret to provide the various temperature conditions shown in Table 1. In the quenching zone, while the unstretched wire was taken out at a speed of 3000 m / min, solidification was performed at a moving speed of 0.6 m / sec with secondary quenching air at 40°C. Next, the undrawn yarn was drawn with a godet roll in a two-step drawing process at 80°C and 100°C (total draw ratio 1.60 times). On godets, the threads were heat treated at various temperatures as shown in Table 1. When the slack is at 2%, the 1000 denier fine wire is wound on the winding machine.

[0099] The physical properties of the wire obtained from each ex...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a polyester multifilament yarn used as tyre reinforcing element and an immersion cord made with the same. The polyester multifilament yarn comprises polyethyleneterephthalate in an amount of not less than 90% by mole, and has an intrinsic viscosity of 0.7~1.2, a toughness of 5.5-8.5g / d, and a difference of middle elongation percentage E0 and E1 (E1-E0) of not less than 6%.The obtained filament yarn and immersion cord exhibits balanced high elastic modulus and low contraction rate and has excellent dimensional stability and fatigue resistance, thus they can be used to reinforce rubber products like tyre.

Description

[0001] This application is a divisional application of Chinese patent application 00121404.7 (application date is July 19, 2000). field of invention [0002] The invention relates to a high-modulus, low-shrinkage industrial polyester multi-fiber yarn used as a tire reinforcement and a dipped cord formed therefrom. More particularly, the present invention relates to a polyester multifilament yarn and a dipped cord formed therefrom that maintain excellent dimensional stability and fatigue resistance even at high temperatures. Furthermore, the invention relates to a method for producing such polyester multifilament yarns and dipped cords. Background technique [0003] One of the typical functional applications that fibers have is the reinforcement of rubber articles such as tires. Examples of fibers used as reinforcements include nylon, polyester, rayon, and the like. Among them, polyester fiber contains benzene ring in its molecular structure, which has certain rigidity. Ac...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): D02G3/48D01F6/62D01D5/00
CPCD01D5/088D01D5/098D01D10/02D01F6/62D02G3/02D02G3/28D02G3/48D06M15/693D07B2501/2046D10B2505/022Y10S57/902
Inventor 金诚中金基雄李承污
Owner 株式会社科隆