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Multi-hole superfine denier polyamide 6 POY/FDY interlacing composite fiber, its preparation method and its device

A composite fiber and polyamide technology, which is applied in the field of chemical fibers, can solve the problems of poor dyeing performance and effect, complicated processing procedures, and high production costs, and achieve the effects of low production costs, good drapability, and low investment in equipment transformation

Inactive Publication Date: 2012-06-27
吴江赴东扬程化纤有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional two-step method has long process flow, complex processing procedures, poor dyeing performance and effect, poor product quality, high production cost and low efficiency.

Method used

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  • Multi-hole superfine denier polyamide 6 POY/FDY interlacing composite fiber, its preparation method and its device
  • Multi-hole superfine denier polyamide 6 POY/FDY interlacing composite fiber, its preparation method and its device
  • Multi-hole superfine denier polyamide 6 POY/FDY interlacing composite fiber, its preparation method and its device

Examples

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Embodiment 1

[0022] See attached figure 1 , which is a process flow diagram for the preparation of a porous ultrafine polyamide 6 POY / FDY interlaced composite yarn provided in this example, and provides a new type of porous ultrafine polyamide 6 POY / FDY with excellent production performance Preparation method of entangled composite fiber. The production process is as follows:

[0023] The relative viscosity of polyamide 6 slices is 2.70-3.10, and the relative molecular weight is 16000-18000. The slices are pre-crystallized at 145°C for about 30 minutes, and sent to the drying tower for 6-8 hours. The drying temperature is 155°C to ensure the moisture content of the slices. Less than 30ppm, the dry polyamide 6 slices after drying enter the screw, and an additive with a mass fraction of 5.0% is added to the polyamide 6 slices, and the additive is a nano-random copolymer of methacrylate, maleic anhydride and styrene , by weight percent, the content of methacrylate is 80%, the content of mal...

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Abstract

The invention discloses a multi-hole superfine denier polyamide 6 POY / FDY interlacing composite fiber, its preparation method and its device. The invention is characterized in that a current FDY production device is used, a raw material polyamide 6 is sliced and dried, an additive is on-line added, the sliced polyamide 6 is subjected to screw extrusion and melt extrusion, strand which is subjected to annealing and circular-blow wind cooling solidification is divided in to two beams, one beam of the strand is subjected to oiling, pre-networking, stretching and thermosetting to obtain FDY; another beam of the strand is subjected to oiling and then is input to a first godet roller, and then subjected to pre-networking and input to a second godet roller to obtain POY, then simultaneously input in an interlacing nozzle for compositing, a process of winding formation is carried out to prepare the multi-hole superfine denier polyamide 6 POY / FDY interlacing composite fiber. According to the fiber molecular structure performance design and the fiber form control, a process optimization scheme is determined to obtain the composite silk fiber with differential linear density, differential elongation and differential shrinkage, the fiber has the advantages of moisture absorption, breathability, good drapability, high color rendering, good comfortableness and the like.

Description

technical field [0001] The invention relates to a porous superfine denier polyamide 6 POY / FDY intertwined composite fiber, a preparation method, and equipment thereof, belonging to the technical field of chemical fibers. Background technique [0002] Porous ultra-fine polyamide 6 POY / FDY composite fiber is a kind of polyamide 6 fine-denier yarn made of single or multiple strands and other fibers of different specifications, different varieties, or the same variety, and the same specification enter the deformation nozzle through overfeeding. , Under the action of ultrasonic airflow, the complex intertwining deformation produces shrinkage and loops, which are super-simulation natural fibers formed by intertwined looped yarns. The composite fiber has a fine structure formed by a special fiber group, a fine space between fibers, a three-dimensional spatial shape, a multi-layer structure and an appearance similar to natural fibers. Compared with ordinary fibers, it has a softer ...

Claims

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Application Information

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IPC IPC(8): D01F6/90D01D13/00D01D5/08B29C47/92B29C48/92
Inventor 管新海刘海军钱静
Owner 吴江赴东扬程化纤有限公司
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