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Device and method for producing fine-denier or super-fine-denier nylon 66 filament

A technology of ultra-fine denier and nylon, applied in the field of textile materials, can solve the problems of different definitions, fine denier, and micro-denier fibers without uniform caliber standards, etc., and achieve the effect of broad application and development prospects

Active Publication Date: 2014-03-26
LIAONING YINZHU CHEMTEX GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no uniform caliber standard for the definition of fine denier and micro-denier fibers, and the definitions of each country and region are not the same

Method used

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  • Device and method for producing fine-denier or super-fine-denier nylon 66 filament
  • Device and method for producing fine-denier or super-fine-denier nylon 66 filament

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Using the above-mentioned improved horizontal tubular continuous polycondensation system to produce fine denier or ultrafine denier nylon 66 filaments, the aqueous solution of nylon 66 salt (with a concentration of 50% by mass) is subjected to polycondensation reaction through the continuous polycondensation system to obtain nylon 66 Resin melt, and then the nylon 66 resin melt is directly spun to prepare fine denier or ultra-fine denier nylon 66 POY filament; during the spinning process, the temperature of the spinning box is 286°C, the temperature control accuracy is ±0.2°C, and the initial pressure of the component 20-22MPa.

[0046] Spinneret is the plate diameter The aperture is 0.3mm, and the length-to-diameter ratio is 4:1 parallel spinneret. The filter material of the spinning assembly is P-270 stainless steel metal sand.

[0047] Side blowing air temperature is 22°C, wind speed is 0.75m / s, rheumatism is 75%, oiling concentration is 8%, oiling rate is 0.45%, o...

Embodiment 2

[0053] The difference from Example 1 is that the aqueous solution of nylon 66 salt has a mass percentage concentration of 55%. During the spinning process, the temperature of the spinning box is 290° C., the aperture of the spinneret is 0.4 mm, and the filter material of the spinning assembly is P -271 stainless steel metal grit.

[0054] The air temperature of side blowing is 22°C, the wind speed is 0.8m / s, the rheumatism is 85%, and the oiling concentration is 12%.

[0055] Control the POY network degree to 8 pieces / m, and the winding speed to 4300m / min.

[0056] The prepared product specification of present embodiment is as follows:

[0057] Fiber specification: 64dtex / 68f superfine denier PA66.

[0058] Fiber quality indicators: strength 35.27CN / tex; elongation 24.05%; crimp shrinkage 40.26%; crimp stability 49.26%; oil content 3.31%.

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Abstract

The invention discloses a device and method for producing a fine-denier or super-fine-denier nylon 66 filament and belongs to the technical field of textile materials. The device comprises an evaporator, a preheater, a reactor, a flash vessel and a polycondensation finisher system. A pressure adjusting valve is arranged on the evaporator. A three-section biphenyl secondary-circuit heating method is adopted by the reactor. The polycondensation finisher system comprises a polycondensation finisher, a vapor liquid separator, a vapor purifier device and a nitrogen injection system. A polycondensation reaction is conducted on a water solution of nylon 66 salt through the improved continuous polycondensation system, and then a nylon 66 resin melt is obtained. Spinning is directly conducted on the nylon 66 resin melt to manufacture the fine-denier or super-fine-denier nylon 66 POY filament. According to the device and method for producing the fine-denier or super-fine-denier nylon 66 filament, direct melt spinning is conducted by the adoption of a multi-hole spinneret plate, a POY melt spinning device and the accurate spinning technology through the technical improvement to an existing continuous polycondensation system and more reliable technology control, and therefore the nylon 66 POY filament with the dpf ranging from 0.8dtex to 1.0dtex is manufactured.

Description

technical field [0001] The invention belongs to the technical field of textile materials, and in particular relates to a device and method for producing fine-denier or ultra-fine-denier nylon 66 filaments. Background technique [0002] Fine denier and ultrafine denier fibers originate from bicomponent composite fibers. Around 1960, the first batch of commercial composite fibers came out. Around 1965, multi-layer composite fibers were developed. Around 1970, multi-layer composite fibers were stripped to obtain micro-denier fibers. From the late 1970s to the mid-1980s, high-speed spinning fine fibers appeared. Denier and ultra-fine fiber technology, the application is also expanding. For example, in 1970, Toray Corporation of Japan developed imitation suede; in 1972, Zhongfang Company developed imitation silk fabric; in 1981, Kuraray Company developed the second generation of artificial leather; With the development of high-performance cleaning cloths, the products of major ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D13/00D01D5/08D01D5/11D01D10/00
Inventor 杜选姜立鹏薛晖于波
Owner LIAONING YINZHU CHEMTEX GROUP
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