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Porous micro-fine denier nylon 6 POY filament yarns and preparation method thereof

A technology of fine denier and nylon, applied in the field of synthetic fibers, can solve the problems of not easy to stretch and deform, high cost, complicated production process, etc., and achieve the effects of stable product performance, simple production method and simple process.

Inactive Publication Date: 2015-04-29
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the current problem that the production process of differential micro-denier nylon 6 fiber is complicated, the cost is high and it is not easy to stretch and deform, the present invention provides a porous micro-denier nylon 6 POY filament and a preparation method thereof, so that the differential micro-denier nylon 6 POY Fiber production can be easily realized on conventional high-speed spinning equipment, and the porous micro-denier nylon 6POY nylon filament spun has stable performance, high strength and elongation, can meet the requirements of texturing, and is easy to dye, and the production cost is greatly reduced , easy to be widely applied

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028]The functional nylon 6 chip resin obtained above is melt-spun, wherein the rare earth salt content in the chip resin is 0.002%, the chip viscosity is 2.45, and the melting point is 218 ° C. After extruding the functional nylon 6 chip melt through a screw extruder Sent to the spinning machine, the melt is quantitatively pressed into the spinning parts by the metering pump, and the nylon 6 melt is extruded in a fine filament state through the spinneret holes on the spinneret, and the pre-fixed filaments are sucked by the monomer device, slow cooling device, and then through the ring blowing, cooling and forming, oiling, clustering and winding to obtain the finished product of fine denier nylon 6POY fiber, wherein the temperature of the melt in each zone of the screw extruder is 255°C, 258°C, 259°C, 259°C, the spinning temperature is 257°C; the number of spinneret holes used is 68, the hole diameter is 0.25mm, and the length is 0.7mm; the temperature of the air blown by the ...

Embodiment 2

[0031] The functional nylon 6 chip resin obtained above is melt-spun, wherein the rare earth salt content in the chip resin is 0.01%, the chip viscosity is 2.47, and the melting point is 217 ° C. After extruding the functional nylon 6 chip melt through a screw extruder Sent to the spinning machine, the melt is quantitatively pressed into the spinning parts by the metering pump, and the nylon 6 melt is extruded in a fine filament state through the spinneret holes on the spinneret, and the pre-fixed filaments are sucked by the monomer device, slow cooling device, and then blown through the ring, cooling and forming, oiling, clustering and winding to obtain the finished product of fine denier nylon 6POY fiber, wherein the temperature of the melt in each zone of the screw extruder is 257 ° C, 260 ° C, 261°C, 261°C, the spinning temperature is 259°C; the number of spinneret holes used is 136, the hole diameter is 0.22mm, and the length is 0.7mm; the temperature of the air blown by t...

Embodiment 3

[0034] Melt-spin the functional nylon 6 chip resin obtained above, wherein the rare earth salt content in the chip resin is 0.05%, the chip viscosity is 2.49, and the melting point is 214 ° C. After extruding the functional nylon 6 chip melt through a screw extruder Sent to the spinning machine, the melt is quantitatively pressed into the spinning parts by the metering pump, and the nylon 6 melt is extruded in a fine filament state through the spinneret holes on the spinneret, and the pre-fixed filaments are sucked by the monomer equipment, slow cooling device, and then through the ring blowing, cooling and forming, oiling, clustering and winding to obtain the finished product of porous micro-denier nylon 6POY fiber, wherein the temperature of the melt in each zone of the screw extruder is 259 ° C, 262 ° C, 262°C, 262°C, the spinning temperature is 259°C; the number of spinneret holes used is 196, the hole diameter is 0.15mm, and the length is 0.6mm; the temperature of the air ...

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Abstract

The invention relates to the technical field of synthetic fibers, provides porous micro-fine denier nylon 6 POY filament yarns and a preparation method thereof, and aims at solving the problems that an existing differential micro-fine denier nylon 6 fiber production process is complicated, the cost is high and the fibers are not easy to stretch and deform. The porous micro-fine denier nylon 6 POY filament yarns have the characteristics that the filament number is 0.11dtex-0.55dtex, the elongation at break is 60%-90%, the breaking strength is 3.3cN / dtex-4.4cN / dtex, the oil content is 0.7%-1.2% and the full coiling rate of the fibers is 90.0%-98%. The production of the micro-fine denier nylon 6 POY filament yarns can be easily realized by conventional high-speed spinning equipment and the spun porous micro-fine denier nylon 6 POY filament yarns have stable performances and the relatively high strength and elongation; the texturing requirements can be met and the fibers are easy to dye; and the production cost is greatly reduced and the wide popularization and application are facilitated.

Description

technical field [0001] The invention relates to the technical field of synthetic fibers, in particular to a porous micro-denier nylon 6 POY filament and its preparation technology. Background technique [0002] The thickness of textile fibers can be characterized by single-filament fineness. Generally, chemical fibers with a single-filament fineness of about 1.1 dtex are called fine denier fibers, while chemical fibers with a single-filament fineness of about 0.55 dtex are called ultra-fine denier fibers. Fibers with a single filament fineness below 0.33dtex are called fine denier fibers. The unique structure and physical and chemical properties of differential micro-denier fibers are attracting more and more people's interest, and the research on differential micro-denier fibers is also developing rapidly. At present, there are several methods for producing differentiated micro-denier fibers, including conventional spinning improvement method, sea-island composite spinning...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/90D01F1/10D01D5/08D01D1/04D01D4/02D01D5/088D01D5/096
Inventor 郝超伟潘庆华来国桥蒋剑雄马清芳任庆佩
Owner HANGZHOU NORMAL UNIVERSITY
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