High elongation high dimensional stability hmls polyester cord fabric, its manufacturing method and application

By optimizing the parameters of the ring blower and slow cooler in the spinning section, and combining them with the high-temperature impregnation method to prepare HMLS polyester cord fabric with high elongation and high dimensional stability, the problem of reduced raw yarn strength caused by excessively low ring blower temperature was solved, the breaking elongation and dimensional stability of the cord fabric were improved, and the tire's impact resistance and high-speed handling performance were enhanced.

CN117734053BActive Publication Date: 2026-06-12JIANGSU TAIJI IND NEW MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU TAIJI IND NEW MATERIALS CO LTD
Filing Date
2024-01-12
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

The current polyester cord fabric has a low ring blower temperature in the spinning section, which reduces the strength of the raw yarn and affects the breaking elongation and dimensional stability of the cord fabric, making it difficult to meet the requirements of improved tire performance.

⚗Method used

In the spinning section, the temperature and pressure of the ring blower are reduced, the temperature and height of the slow cooler are adjusted, and combined with specific spinning speed, winding speed and twisting weaving process, high-elongation and high-dimensional stability HMLS polyester cord fabric is prepared by high-temperature impregnation method.

🎯Benefits of technology

It improves the breaking elongation and dimensional stability of the cord fabric, thereby enhancing the tire's impact resistance and high-speed handling performance.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

This invention discloses a high elongation and high dimensional stability HMLS polyester cord fabric and its manufacturing method and application. The manufacturing method includes the following steps: (1) Spinning: using high-viscosity polyester PET chips as raw material for melt spinning, and using ring blowing + slow cooling to obtain raw yarn; (2) Twisting: using a straight twisting machine to twist the raw yarn to obtain twisted yarn; (3) Weaving: using an air-jet loom to weave the twisted yarn to obtain white fabric; (4) using a two-bath impregnation method to impregnate the white fabric, with the high-temperature zone oven temperature at 225-245℃, and the tension ratio of impregnation stretching to impregnation setting being 1.5:1-3.5:1. The breaking elongation of the HMLS polyester cord fabric obtained by this invention is 17.0-19.0%, and the dimensional stability coefficient is 5.6-6.4%. When applied to tires, HMLS polyester cord fabric can improve the tire's impact resistance and load-bearing capacity, and improve the tire's handling performance at high speeds.
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