Method of producing lighting terylene short fiber

A production method and technology of light polyester, which are applied in spinneret assemblies, single-component polyester rayon, textiles and papermaking, etc., can solve the problems of dependence on imports, difficult quality indicators, and high costs, and meet high requirements. The requirement of draw ratio, the effect of reducing the times of spinning and trimming, and improving the drawing performance

Inactive Publication Date: 2008-10-22
JIANGSU JIANGNAN HIGH POLYMER FIBER
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AI Technical Summary

Problems solved by technology

[0010] Glossy polyester staple fiber is the main raw material for making high-speed sewing thread, but due to the difficulty of reaching or meeting the relevant quality indicators, low product qualification rate, and large quality fl

Method used

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Embodiment Construction

[0030] The production method of the present invention is described below through specific examples.

[0031] Purified terephthalic acid (PTA) (addition amount is 4.5 tons / hour), catalyst antimony trioxide (concentration is 400ppm) and triphenyl phosphate (concentration is 50ppm) and ethylene glycol (EG) (addition amount is 1.85 tons / hour) mixes in the slurry mixing tank, adds the barium sulfate of 38PPM and ethylene glycol suspension (barium sulfate is ground into particle diameter and is the powdery particle of 75-85nm (concentration is relative to whole reactant by pure nanometer barium sulfate calculated according to the amount of water), the esterification is carried out through the first esterification tank, the temperature is 270 ° C, the pressure is 0.145 MPa, the amount of distilled water is controlled to be 940-945 L / H, and then enters the second esterification tank, the temperature is 272 ° C, usually pressure, control the amount of distilled water to be 85-90L / H, an...

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Abstract

The method relates to a method for producing bright polyester staple fibers, belonging to the chemical fiber production technical field. The invention is characterized in that: the method prepares the bright polyester staple fibers through addition of permanent white additives on a certain position of a polycondensation device for polyreaction and utilization of a specially designed spinneret plate and the specially optimized circular-blow wind cooling technique. Because the added permanent white during the process of polycondensation, the method can make the fibers reach the effect of brightness when no TiO2 is added and simultaneously improve the postprocessing properties of the bright staple fibers; the spinneret plate special for spinning the bright staple fibers and circular-blow non-woven fabric reselection are designed, thereby the method reduces the frequency for repairing the spinneret plate, improves the uniformity of bright protofilaments, optimizes various parameters of circular-blow wind, effectively improves the tensile property of the bright protofilaments and not only meets the requirements of high mightiness of the bright staple fibers on high draw ratio of postprocessing but also guarantees high running rate of a postprocessing device.

Description

technical field [0001] The invention relates to a polyester staple fiber, in particular to a method for producing bright polyester staple fiber. The polyester staple fiber is mainly used for producing sewing thread and belongs to the technical field of chemical fiber production. Background technique [0002] At present, glossy polyester staple fiber is mainly used to produce sewing thread. The annual market consumption of polyester staple fiber for sewing thread in my country is more than 100,000 tons. Due to its difficult production, high added value of the product, and good economic benefits, it has become the difference among chemical fiber enterprises. One of the main directions of chemical production. [0003] The main properties of the sewing thread are as follows: high sewing strength and wear fastness, good heat resistance and antistatic performance, uniform dryness, small torque, less knots, moderate and uniform twist, and can adapt to high speed Sewing requirements...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10D01D5/088D01D4/02
Inventor 浦金龙陶英
Owner JIANGSU JIANGNAN HIGH POLYMER FIBER
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