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Ultra-coarse-denier flat nylon 6 filament and method for producing the same

A production method and technology of flat filaments, which are applied in the production field of nylon 6 ultra-coarse denier flat filaments and ultra-coarse denier nylon 6 flat filaments, can solve the problems such as there is no suitable preparation method for ultra-coarse denier nylon 6 flat filaments, and achieve technological advancement Content and added value, stable production process, and high product quality

Inactive Publication Date: 2015-08-05
ZHEJIANG MESBON CHEM FIBER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the production technology of ultra-coarse denier polyester filament (circular section) (CN101831718A), ultra-coarse denier nylon filament (circular section) (CN103184549A), ultra-coarse denier viscose flat yarn (imitation linen) (CN101135067A) has been reported, However, there are still technical bottlenecks in the production of nylon ultra-coarse denier flat filaments due to the aggregated structural characteristics of nylon, and there is no suitable preparation method for ultra-coarse denier nylon 6 flat filaments.

Method used

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  • Ultra-coarse-denier flat nylon 6 filament and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Such as figure 1 Shown: Melt-spin the dried 6-slice resin, the slice viscosity is 2.48, and the melting point is 219°C. The nylon 6-slice melt is extruded through a screw extruder and sent to the box, and the melt is quantitatively compressed by a metering pump. into the spinning assembly. Among them, the temperature of each zone of the melt in the screw extruder is 257°C, 262°C, 262°C, 262°C respectively, and the spinning temperature is 262°C; 1.5mm×0.17mm, the hole depth is 0.8mm, and the number of holes is 24. The nylon 6 melt is extruded in a filament state through the spinneret holes on the spinneret plate, and then sucked by the monomer, and then enters the inner ring blowing device for cooling , the speed of the surrounding air blowing is 0.6m / s, the temperature of the cooling air is controlled at 19°C, and the humidity is controlled at 75%. The final tow is bundled by two oilings, the bundle point is 135cm away from the spinneret, and the oil concentration is ...

Embodiment 2

[0020] Such as figure 1 Shown: Melt spinning the dried 6-slice resin, the viscosity of the slice is 2.47, and the melting point is 218°C. The melted nylon 6 slices are extruded by a screw extruder and sent to the box, and the melt is quantitatively compressed by a metering pump. into the spinning assembly. Among them, the temperature of each zone of the melt in the screw extruder is 256°C, 259°C, 259°C, 259°C respectively, and the spinning temperature is 259°C; 2.0mm×0.20mm, the hole depth is 0.8mm, and the number of holes is 18. The nylon 6 melt is extruded in a filament state through the spinneret holes on the spinneret plate, and then sucked by the monomer, and then enters the inner ring blowing device for cooling , the speed of the surrounding air blowing is 0.6m / s, the temperature of the cooling air is controlled at 18°C, and the humidity is controlled at 80%. The final tow is bundled by two oilings, the bundle point is 145cm away from the spinneret, and the oil concent...

Embodiment 3

[0022] Such as figure 1 Shown: Melt spinning the dried 6-slice resin, the viscosity of the slice is 2.47, and the melting point is 218°C. The melted nylon 6 slices are extruded by a screw extruder and sent to the box, and the melt is quantitatively compressed by a metering pump. into the spinning assembly. Among them, the temperature of each zone of the melt in the screw extruder is 254°C, 257°C, 257°C, 257°C respectively, and the spinning temperature is 257°C; 3.0mm×0.30mm, the hole depth is 2.0mm, and the number of holes is 12. The nylon 6 melt is extruded in a filament state through the spinneret holes on the spinneret plate, and then sucked by the monomer, and then enters the inner ring blowing device for cooling , the speed of the surrounding air blowing is 0.7m / s, the temperature of the cooling air is controlled at 17°C, and the humidity is controlled at 80%. After the tow is oiled and bundled in two stages, the bundle point is 170cm away from the spinneret, the concen...

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Abstract

The invention discloses a method for producing an ultra-coarse-denier flat nylon 6 filament. The producing method comprises the following steps of cutting the nylon 6 into pieces and conveying into a screw for heating and melting, extruding fondants into a box through the screw (including static and dynamic mixers); placing the fondants into a spinneret assembly through a metering pump, mixing and filtrating through different-size metal sands and then extruding by spinneret orifices. Through a monomer pumping device, filament bundles extruded by the spinneret orifices are wound into a filament barrel after performing circular blowing cooling, bundling oiling, air interlacing jet, heating roller sizing. The aperture of each spinneret orifice is in the range of 1.5mm-5.0mm*0.15mm-0.40mm, and the orifice depth is in the range of 0.5mm-1.5mm; according to the producing method, the flatness of the fiber is in the range of 4.0-9.0. The production process is relatively steady, the produced ultra-coarse-denier flat nylon 6 filament is good in quality, and the flatness, breaking strength, breaking elongation and oil percentage of the filament can meet subsequent processing requirements, and thus the filament is a novel differential nylon 6 fiber with a high additional value.

Description

technical field [0001] The invention relates to the technical field of chemical fiber production, in particular to a production method of ultra-coarse denier nylon 6 flat yarn and nylon 6 ultra-coarse denier flat yarn. Background technique [0002] Due to its unique structural properties, differential fibers are attracting more and more people's interest, and the research on this type of fibers is also developing rapidly. Among them, special-shaped fibers are an important type of differential fibers. In the synthetic fiber molding process, fibers or hollow fibers with non-traditional circular cross-sections spun with special-shaped spinneret holes (non-circular holes) are called special-shaped cross-section fibers, or special-shaped fibers for short. Shaped fiber can improve the waxy feel and luster of round silk, increase the friction coefficient of the fiber, and increase the specific surface area of ​​the fiber to overcome some inherent defects of synthetic fibers. Flat ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D13/00D01D5/253
Inventor 薛益群郝超伟张闽蒋剑雄邢文斌来国桥陈紫辉马清芳
Owner ZHEJIANG MESBON CHEM FIBER
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