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Production process for flame-retardant sewing threads

A production process and sewing thread technology, applied in the field of flame retardant sewing thread production process, can solve the problems of low strength, poor color fastness, and high glass transition temperature, and achieve improved production efficiency, reduced end breakage, and yarn defects. reduced effect

Inactive Publication Date: 2018-04-17
SHANDONG HONGYE TEXTILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are still some shortcomings in aramid fiber: the glass transition temperature of aramid fiber is as high as 270°C, and it cannot be dyed by conventional methods. Even if individual dyes are barely dyed, the color fastness is very poor.
Aramid 1313 has outstanding performance, good thermal stability, flame retardancy, etc. However, due to the complex production process, high technical difficulty, and low strength of aramid 1313, the scope of use is limited, and the method of blending is generally used

Method used

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  • Production process for flame-retardant sewing threads
  • Production process for flame-retardant sewing threads
  • Production process for flame-retardant sewing threads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0034] Example: 100% of 1.5D╳51mm aramid fiber 1313 is processed, and the yarn count is 40 s The process parameters of each process described in / 3 are:

[0035] ---Cleaning: Lap length 30.6m, basis weight 400g / m, lap roller speed 10r / min, combined beater speed 800r / min 480r / min;

[0036] ---Carding: raw sliver quantitative grams / 5m 18.5 cylinder speed 360 rpm / min licker-in roller speed 760 rpm / min cover plate speed 81 mm / min doffer speed 25 rpm / min four points between cylinder and cover plate Gauge / mm0.25, 0.20, 0.20, 0.25;

[0037] ---Drawing frame: merging method with 8 wires in both lanes, fixed weight (g / 5m), combined number, drafting multiple, roller gauge (mm), speed (m / min) 20.0 8 8.13 11×8×18 206;

[0038] --- Roving: Quantitative (g / 10m), twist coefficient, drafting multiple, roller gauge (mm), front roller speed (rev / min) 5.066 8.1 9.5×24.5×35.5 210; the twist coefficient is too small to master, and the roving tension should be biased small control;

[0039] --...

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Abstract

The invention discloses production process for flame-retardant sewing threads. The flame-retardant sewing threads are prepared by processing of 100% of 1.5D*51mm aramid 1313 fibers with yarn count being 40s / 3. The production method of flame-retardant sewing threads comprises the following steps: pre-processing aramid 1313 fibers; performing opening picking on pre-processed aramid 1313 fibers, performing cotton carding operation on pre-processed aramid 1313 fibers, drawing pre-processed aramid 1313 fibers, performing roving operation in order to form aramid fiber 1313 roving; utilizing siro spinning yarns to spin aramid fiber 1313 roving into aramid 1313 single yarns; making single yarns into aramid 1313 three folded yarns through an automatic winding machine, yarn doubling and piling operation; making three folded yarns into aramid 1313 sewing threads through yarn steaming and setting process; performing humidification and moisture preservation operation on half finished products in all processes such that the moisture regain is kept within 9%-10%. With compact siro-spinning technology, the end breakage rate of spun yarns is decreased at 1 hour of every 1000 spindles. Yarn faults are reduced. Therefore, production efficiency is relatively increased. The flame-retardant sewing threads are higher in quality.

Description

technical field [0001] The invention relates to a production process of a flame-retardant sewing thread, which belongs to the technical field of spinning production. Background technique [0002] The requirements for the flame retardancy of textiles are getting higher and higher, and the requirements for flame retardancy of sewing threads have been raised to an important position. At present, the sewing threads on the market mainly include polyester, aramid 1313, aramid 1414, etc. Among them, aramid 1313, commonly known as fireproof fiber, is a special synthetic fiber integrating high temperature resistance, flame retardancy, insulation and other excellent properties. Processed into special protective clothing for industrial, military and fire protection, high-temperature filter materials and flame-retardant textiles; because aramid 1313 fiber is very fluffy, has high elasticity and high elongation, and it is easy to accumulate static electricity during processing, the fiber...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D02G3/02D02G3/44D02G3/46
Inventor 李汉利张文奎李汉顺李希学王玉新孟菲
Owner SHANDONG HONGYE TEXTILE
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