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Method for producing fine-denier cross special-shaped polyester filament yarn and product thereof

A special-shaped polyester filament, production method technology, applied in the direction of filament/thread forming, single-component polyester rayon, textile and paper making, etc., to achieve low single fiber fineness, uniform evenness, excellent moisture absorption and perspiration characteristics Effect

Inactive Publication Date: 2008-03-12
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fine denier cross-shaped polyester filament with a monofilament fineness of 0.5~0.7d.p.f has not been reported yet

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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  • Method for producing fine-denier cross special-shaped polyester filament yarn and product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The PET melt is extruded through the cross spinneret holes of the spinneret, cooled, clustered and oiled, and wound to obtain a fine denier cross shaped POY, which is stretched and elasticated with a stretching ratio of 1.60 to obtain a fine denier cross shaped DTY. Among them, when the temperature of the spinning melt is 290°C, the wind speed of the side-blown cooling air is 0.45m / s, the wind temperature is 18°C, the winding speed is 2700m / min, and the spinning pressure is 15MPa, the breaking strength is 3.6cN / dtex , 26% elongation at break, 70% profile, 56dtex / 72f (single fiber fineness 0.7d.p.f) fine denier cross profiled DTY with 0.88% evenness. The spinning process is stable.

Embodiment 2

[0025] The PET melt is extruded into bundles through cross spinneret holes, cooled, clustered and oiled, and wound to obtain a fine-denier cross-shaped POY, which is stretched and elasticated with a stretching ratio of 1.60 to obtain a fine-denier cross-shaped DTY. Among them, when the temperature of the spinning melt is 290°C, the wind speed of the side blowing cooling air is 0.45m / s, the wind temperature is 18°C, the winding speed is 2800m / min, and the spinning pressure is 15MPa, the obtained 56dtex / 96f (single fiber fineness 0.525d.p.f), the breaking strength is 3.5cN / dtex, the breaking elongation is 25%, the degree of deformation is 58%, and the fine denier cross profile DTY with the unevenness of 0.87%. The spinning process is stable.

Embodiment 3

[0027] The PET melt is extruded into bundles through the cross spinneret holes, cooled, clustered and oiled, and wound to obtain a fine-denier cross-shaped POY, which is stretched and elasticized with a stretching ratio of 1.65 to obtain a fine-denier cross-shaped DTY. Among them, when the temperature of the spinning melt is 292°C, the wind speed of the side blowing cooling air is 0.3m / s, the wind temperature is 18°C, the winding speed is 2900m / min, and the spinning pressure is 17MPa, the obtained 83.3dtex / 144f (single fiber degree of 0.52d.p.f), breaking strength of 3.3cN / dtex, elongation at break of 25%, degree of profile of 51%, with 0.86% of unevenness of fine denier cross shaped DTY. The spinning process is stable.

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Abstract

The invention discloses a production method and relevant products for fine denier cross-type deformed terylene filament, and belongs to the technical field of terylene fibers. During production of the fine denier cross-type deformed terylene filament, the invention adopts metal sand with features of high stability, high filature pressure and high deformed extent to perform melt body filtration; meanwhile, a cooling process is utilized on a cross air flow device integrated with a calm zone and a slow cooler, and combined with slow cooling and intensive cooling; moreover, suitable improvement is done to an oiling position, so as to successfully spin fine denier cross-type deformed terylene POY and DTY filament. Monofilament size of the POY filament is 0.78 to 1.19 d.p.f; monofilament size of the DTY filament is 0.5 to 0.7 d.p.f; corss sections of the fibers are similar to a regular cross shape. The invented fine denier cross-type deformed fiber has advantages of high speed of water absorption, water delivery, diffusion and volatilization, and maintaining users' skin dry and cool. Meanwhile, small monofilament size of the fiber can greatly increase flexibleness and perfect hand feeling of the fabric.

Description

technical field [0001] The invention relates to a production method of fine denier cross special-shaped polyester filament and its products. Background technique [0002] Polyester fiber has excellent physical and chemical properties, and is widely used in clothing fabrics and other fields. However, due to the hydrophobicity of polyester fiber, its fabric is not as comfortable as cotton and other natural fiber fabrics, so its application in the field of clothing is limited. With the continuous development of technology, profiled fiber cross-section is now widely used to improve the performance of polyester filaments and increase the added value of its products. [0003] With the improvement of people's living standards, the requirements for polyester sports and leisure clothing have also further increased. Therefore, it is particularly important to improve the hydrophobicity of the polyester fiber so that it has the function of moisture absorption and perspiration. At pre...

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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IPC IPC(8): D01D5/253D01F6/62
Inventor 丁建中王华平赵金广李文刚唐辉柳敦雷张翔曹振博尹晗
Owner JIANGSU HENGLI CHEM FIBER
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