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Ring-spun elastic weft yarn used for weaving tyre cord fabric and production process of ring-spun elastic weft yarn

A tire cord and production process technology, applied in the field of spinning, can solve the problems of large loss of weft yarn strength and extensibility, low single yarn breaking strength and breaking productivity, unstable fabric structure, etc., and achieves strength and extensibility. Small loss, stable and reliable quality, less weft stop

Inactive Publication Date: 2017-01-11
山东合信科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) Single yarn breaking strength and breaking productivity are low;
[0006] (2) After the cord fabric is fully dipped, the heat resistance of the weft yarn is poor, and the strength and extensibility of the weft yarn are greatly lost during the heat treatment process such as fabric dipping;
[0007] (3) Low efficiency and many weft stops when weaving with air-jet loom;
[0008] (4) The fabric structure made of weft yarn is unstable

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
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  • Ring-spun elastic weft yarn used for weaving tyre cord fabric and production process of ring-spun elastic weft yarn
  • Ring-spun elastic weft yarn used for weaving tyre cord fabric and production process of ring-spun elastic weft yarn
  • Ring-spun elastic weft yarn used for weaving tyre cord fabric and production process of ring-spun elastic weft yarn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Example 1 A production process for ring-spun elastic weft yarns for weaving tire cord fabrics

[0051] The ring-spinning spinning frame has been rebuilt, and the silk hanger and the godet wheel are installed, and the cotton fiber is covered on the outside of PA66UDY, and the front roller is at the convergence of the silk, and the cotton fiber is tightly and evenly distributed through the twisting system of the spinning frame. It is wound on the outer layer of PA66UDY and wound on the bobbin to make a spun bobbin. After the bobbin is twist-fixed, it is processed into a bobbin shape by an automatic winding machine.

[0052] Specifically include the following steps:

[0053] Step 1. Preparation of PA66 undrawn yarn

[0054] The preparation of described PA66 unstretched silk, comprises the following steps:

[0055] Include the following steps:

[0056] (1) Raw material selection

[0057] Use PA66 resin, slice viscosity 2.65-3.1;

[0058] The above resin, oxidation index ...

Embodiment 2

[0108] Example 2 A production process for ring-spun elastic weft yarns for weaving tire cord fabrics

[0109] Specifically include the following steps:

[0110] Step 1. Preparation of PA66 undrawn yarn

[0111] The preparation method is the same as in Example 1, only the following steps are changed:

[0112] (2) Modification

[0113] The mass ratio of the total mass of the potassium iodide liquid and the copper acetate liquid to the PA66 resin is 1:300.

[0114] (6) Spinning, cooling and forming

[0115] Component preheating temperature: 320°C, metering pump specification: 2.4ml / r×2, metering pump speed: 18 rpm, side blowing wind speed 1.3 m / s, side blowing wind temperature: 25°C, rheumatism 70%.

[0116] (7) Winding

[0117] The filaments are cooled and formed by side blowing and enter the winding machine through the interlayer heat pipe tunnel;

[0118] Upper godet frequency: 70HZ, lower godet frequency: 70HZ, friction roller frequency: 70HZ, reciprocating traverse fre...

Embodiment 3

[0142] Embodiment 3 A production process for ring-spun elastic weft yarns for weaving tire cord fabrics

[0143] Specifically include the following steps:

[0144] Step 1. Preparation of PA66 undrawn yarn

[0145] The preparation method is the same as in Example 1, only the following steps are changed:

[0146] (2) Modification

[0147] The mass ratio of the total mass of the potassium iodide liquid and the copper acetate liquid to the PA66 resin is: 1:700.

[0148] (6) Spinning, cooling and forming

[0149] Component preheating temperature: 323°C, metering pump specification: 2.4ml / r×2, metering pump speed: 18.2 rpm, side blowing wind speed 1.34 m / s, side blowing wind temperature: 26°C, rheumatism 75%.

[0150] (7) Winding

[0151] The filaments are cooled and formed by side blowing and enter the winding machine through the interlayer heat pipe tunnel;

[0152] Upper godet frequency: 72HZ, lower godet frequency: 72HZ, friction roller frequency: 71HZ, reciprocating trave...

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Abstract

The invention provides a ring-spun elastic weft yarn used for weaving tyre cord fabric. Fineness of the elastic weft yarn is 22+ / 2 English count. The invention further provides a production process of the ring-spun elastic weft yarn used for weaving tyre cord fabric, wherein the production process comprises the following step: feeding a PA66 undrawn yarn with fineness being 180 + / - 20 dtex. The elastic yarn prepared by the production process has fineness being 22+ / 2 English count, single yarn breaking strength being 290 + / -50 cN, strength CV smaller than 8%, breaking elongation being 290 + / -50%, and elongation CV smaller than 8%. The elastic weft yarn prepared by the production process is good in heat resistance, and strength and extendability loss of the elastic weft yarn is small in thermal treatment processes such as fabric glue impregnation; when the elastic weft yarn prepared by the production process is used for weaving tyre cord fabric, weaving efficiency is high and weft stoppage is less when a jet weaving machine is adopted; and weft stoppage is controlled to be less than 5 times on 0.1 million wefts.

Description

technical field [0001] The invention provides a ring-spun elastic weft yarn for weaving tire cord fabrics and a production process thereof, belonging to the technical field of spinning. Background technique [0002] Tire cord fabric is a composite of fiber / steel / rubber. In the fiber, the body layer is the inner core reinforcement member of the tire. It is a part that requires strong fatigue resistance for telescopic movement during driving. [0003] This kind of body layer, that is, the tire cord fabric is generally made of synthetic fiber materials such as nylon (PA), polyester, and polyester; [0004] Existing weft yarn for tire cord has the following deficiencies: [0005] (1) Single yarn breaking strength and breaking productivity are low; [0006] (2) After the cord fabric is fully dipped, the heat resistance of the weft yarn is poor, and the strength and extensibility of the weft yarn are greatly lost during the heat treatment process such as fabric dipping; [000...

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
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D02G3/32D02G3/04D02G3/48D01F6/90D01F1/10D01H1/02
CPCD02G3/32D01F1/10D01F6/90D01H1/02D02G3/04D02G3/48D10B2201/02D10B2331/02D10B2505/022
Inventor 刘效川
Owner 山东合信科技股份有限公司
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