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Improved method for producing colored and differential terylene fibre by melt direct spinning on-line adding technology

A technology of melt direct spinning and polyester fiber, which is applied in the directions of melt spinning, fiber chemical characteristics, textiles and papermaking, etc., can solve the filter switching cycle, the shortening of the spinning component replacement cycle, the difficulty in filtration of the color masterbatch melt, and the difficulty in Realize problems such as continuous production, and achieve the effects of easy automatic control, lower production costs, and reduced losses

Inactive Publication Date: 2009-01-21
滁州安兴环保彩纤有限公司
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  • Summary
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  • Application Information

AI Technical Summary

Problems solved by technology

Due to its poor fluidity, it is difficult to filter the masterbatch melt, and the pigment or dye is intercepted in the filter, which not only causes waste of modified raw materials, but also shortens the filter switching cycle and spinning component replacement cycle, and even affect normal production
For example, in the production of deep navy blue polyester fully drawn yarn (FDY), the masterbatch melt filter switching cycle is 3 days, and the spinning component replacement cycle is 1 day, while the production of ultra-black polyester staple fiber, masterbatch melt filter The switching period is only 8 hours, and the spinning component replacement period is 1 day, which makes it difficult to meet the requirements of continuous production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Embodiment 1: produce special black polyester staple fiber, and production technique is as follows:

[0008] The intrinsic viscosity of polyester melt is IV=0.64dl / g, and the intrinsic viscosity of color masterbatch is IV=0.35dl / g. After the masterbatch is dried by intermittent vacuum drum at 130℃ for 8-10 hours, the moisture content of the masterbatch is guaranteed to be 30ppm. It is sent to the master batch adding silo, and sent to the feeding port of the screw extruder by gravity. The screw extruder adopts electric heating method. The heating temperature is 270~285℃. The modified raw material is melted and extruded into the melt conveying pipeline of the modified raw material, and it is pressurized and metered by the melt gear pump to ensure the melt pressure ≥ 8Mpa , the melt temperature is 290 ° C, and the gear pump is used for metering to ensure that the addition ratio of color masterbatch is 8% (weight percent), the melt pressure after the pump is 15Mpa, and then...

Embodiment 2

[0017] Embodiment 2: produce deep navy blue polyester full-drawn yarn (FDY), and the production technique is as follows:

[0018] Polyester melt intrinsic viscosity IV=0.64dl / g, masterbatch intrinsic viscosity IV=0.37dl / g, after masterbatch is dried at 130℃ for 8-10 hours by intermittent vacuum drum, the moisture content of masterbatch is guaranteed to be 30ppm. To the master batch addition silo, it is sent to the feeding port of the screw extruder by gravity; the screw extruder adopts the electric heating method, and the heating temperature is: 270 ~ 285 ℃ to melt and extrude the modified raw material into the melt of the modified raw material The conveying pipeline is pressurized and metered by the melt gear pump to ensure that the melt pressure is greater than or equal to 8Mpa and the melt temperature is 292 °C. The gear pump is used for metering to ensure that the masterbatch addition ratio is 6% (weight percentage), and the melt pressure after the pump is pumped. It is 15...

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Abstract

A method for manufacturing a colored and differential polyester fiber through an improved fused mass direct-spinning online additive technique belongs to the technical field of synthetic fiber manufacturing method, aiming to provide a method for manufacturing a colored and differential polyester fiber through the improved fused mass direct-spinning online additive technique which is convenient for manufacturing black and dark color polyester fibers. The method comprises the following technical points: before polyester fused mass enters a spinning box body, a dried and fused modified raw material is fed into the spinning box body, and is sufficiently and evenly mixed with the polyester fused mass through an efficient static mixer; and after filtration, the modified raw material and the polyester fused mass are fed into the spinning box body together so as to carry out spinning. The modified raw material is subjected to drying and melting, and is indirectly injected into the efficient static mixer, is sufficiently and evenly mixed with the polyester fused mass, and is subjected to filteration. The technical points ensure excellent fluidity and filtering performance, and prolong the switching cycle of a filter and the change cycle of a spinning component; moreover, the method reduces the loss of color master batch during filtration as well as the production cost for black and dark color fibers.

Description

technical field [0001] The invention relates to a method for producing colored and differentiated polyester fibers by an improved melt direct spinning on-line addition technology, and belongs to the technical field of synthetic fiber production methods. Background technique [0002] The production of differentiated fibers and colored fibers is a new technology in the production of chemical fibers. With the rapid development of the chemical fiber industry, the production technology of differentiated fibers and colored fibers has been paid more and more attention, and the development and application of new production technologies has become one of the development trends of the chemical fiber industry. [0003] Chinese Patent No. 200610096677.5 discloses a method for producing colored and differentiated polyester fibers by melt direct spinning on-line additive technology. A method for producing colored and differentiated polyester fibers by melt direct spinning on-line additio...

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): D01D5/08D01D1/02D01F1/10D01F6/62
Inventor 陈建忠陈洪祥陈国平潘国辉
Owner 滁州安兴环保彩纤有限公司
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