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Production process of high-elasticity-feature terylene pre-oriented fibers

A technology of pre-oriented fiber and production process, which is applied in fiber processing, complete sets of equipment for the production of artificial threads, and bundles of newly sprayed silk, etc., can solve the problem of inability to produce polyester pre-oriented yarn, poor dyeing performance and effect, and product quality. Poor stability and other problems, to achieve the effect of high added value, high oil absorption and cleaning function, and low production cost

Inactive Publication Date: 2015-04-01
ZHONGRUN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The specification of high elongation polyester pre-oriented yarn is 180dtex / 36f, the breaking strength is ≥1.80cN / dtex, and the breaking elongation is 200±30. , soft and bulky, comfortable to wear and other features, low cost, high efficacy, and high added value of the product. At present, the spinning speed of the conventional spinning technology is low, and it is impossible to produce such high-elongation polyester pre-oriented yarn, and use The products produced by existing processing methods have poor quality stability, poor dyeing performance and effect, high production cost and low efficiency

Method used

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  • Production process of high-elasticity-feature terylene pre-oriented fibers
  • Production process of high-elasticity-feature terylene pre-oriented fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1. Modified polyester chips are dried and pre-crystallized

[0040] The slice drying process needs to be heated to 160-170°C. The softening point of ordinary slices is very low, and it is easy to stick into pieces to block the drying device or the feeding pipe. Pre-crystallization improves the crystallinity of the slices, so that the softening point can reach above 200°C, which is beneficial Drying went on smoothly. When drying, it is transported from the bottom of the drying tower to the drying tower to contact with the slices in reverse to make the slices dehydrate quickly, and the dry air takes the moisture out from the top of the drying tower.

[0041] The pre-crystallization temperature is 170°C, the residence time is 35min; the drying temperature is 170°C, the drying time is 4h, and the ventilation volume is 250Nm 3 / h, the dry air inlet dew point is -80°C. The production capacity is 300KG / h, and the moisture content of dry slices is ≤0.003%. The main performan...

Embodiment 2

[0069] 1. Modified polyester chips are dried and pre-crystallized

[0070] The pre-crystallization temperature is 180°C, the residence time is 25min; the drying temperature is 180°C, the drying time is 6h, and the ventilation rate is 300Nm 3 / h, the dry air inlet dew point is -80°C. The production capacity is 400KG / h, and the moisture content of dry chips is 0.0025%.

[0071] 2. Melting and spinning

[0072] In this embodiment, the blended spinning of acrylate with a mass fraction of 2% is added, and the micropores of the spinneret are evenly distributed and arranged; the spinning temperature is 292°C, the specification of the spinneret is Φ95, and the micropores of the spinneret are 0.28*0.54*36, the component composition is 20 / 280+40 / 240 mesh / g, and the initial pressure of spinning is 160bar.

[0073] 3. Combination cooling and forming, and oiling

[0074] In this embodiment, the combined cooling method of slow cooling and side blowing is adopted in the cooling forming p...

Embodiment 3

[0080] 1. Modified polyester chips are dried and pre-crystallized

[0081] The pre-crystallization temperature is 176°C, the residence time is 28min; the drying temperature is 173°C, the drying time is 5.5h, and the ventilation rate is 300Nm 3 / h, the dew point of the dry air inlet is -80°C, and the moisture content of the dry slice is 0.0025%.

[0082] 2. Melting and spinning

[0083] In this embodiment, the blended spinning of acrylate with a mass fraction of 1% is added, and the micropores of the spinneret are evenly distributed and arranged; the spinning temperature is 289°C, the specification of the spinneret is Φ95, and the micropores of the spinneret are 0.28*0.54*36, the component composition is 20 / 280+40 / 240 mesh / g, and the initial pressure of spinning is 145bar.

[0084] 3. Combination cooling and forming, and oiling

[0085] In this embodiment, the combined cooling method of slow cooling and side blowing is adopted in the cooling forming process, the speed of sid...

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Abstract

The invention provides a production process of high-elasticity-feature terylene pre-oriented fibers. The production process is characterized by comprising the steps of 1) slicing a raw material, namely, modified polyester, conveying the material to a wet material bin to enable pre-crystallizing, and then ventilating and drying to obtain dry slices; 2) feeding the dry slices and an additive into a screw extrusion machine together under a melting condition, filtering and then transferring into a spinning box to obtain a melt; 3) metering the melt through a metering pump, and feeding into a spinning assembly to yield silks; 4) performing slow cooling and side blowing for the silks obtained in step 3) to cool and shape, and then applying oil; 5) pulling, stretching, and thermally shaping; 6) coiling through a coiling head to obtain the high-elasticity-feature terylene pre-oriented fibers. The high-elasticity-feature terylene pre-oriented fibers prepared by the production process have the advantages that the specification is up to 180dtex / 36f, the breaking strength is not less than 1.80cN / dtex, the elongation at break is 200+ / 30; the softness, sense of touch and rebound elasticity are superior to those of the general fibers, and moreover, the water absorbing performance, the oil absorbing performance and the cleaning function are high.

Description

technical field [0001] The invention relates to a production process of fibers, in particular to a production process of high elongation characteristic polyester pre-oriented fibers. Background technique [0002] At present, although some technologies and products of my country's polyester fiber industry have reached the international advanced level, it is also facing challenges such as few varieties of high value-added functional fibers, low output, low quality, fierce homogenization competition, and industry profit margins. Low-level outstanding problems. Therefore, the research and development of various high-performance, functional, comfortable and supernatural fibers, differential fibers, etc., has become the focus of research and development of various enterprises in the chemical fiber industry. [0003] The specification of high elongation polyester pre-oriented yarn is 180dtex / 36f, the breaking strength is ≥1.80cN / dtex, and the breaking elongation is 200±30. , soft ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D13/00D01D5/08D01F8/14
CPCD01D13/00D01D4/02D01D5/08D01D5/088D01D5/096D01D7/00D10B2331/04D10B2401/063
Inventor 高忠林兰寿梅
Owner ZHONGRUN SCI & TECH
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