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POY-DTY production method for chinlon 56DTY high stretch yarn

A technology of POY-DTY and production method, which is applied in the field of nylon production technology to achieve the effects of energy saving, compact structure and good water absorption

Inactive Publication Date: 2014-08-06
于海龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing production process cannot produce high-quality nylon 56DTY high-elastic yarns that meet customer needs, and at the same time replace non-renewable petroleum-based nylon fibers and reduce energy consumption in the manufacturing process of elastic yarns

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The reduced viscosity of polyamide 56 slices is 180ml / g, the moisture content after drying is lower than 0.15%, and the size of impurities contained is lower than 6 microns. The POY-DTY process is used as raw materials to prepare the DTY high Elastic yarn, wherein in the POY-DTY process, the process route of POY is: multi-temperature zone single-screw extruder → pre-filter → static mixer → metering pump → spinning assembly → spinneret → side blowing → oiling and clustering → tunnel → winding; among them: melt spinning temperature: 290°C; side blowing wind speed: 0.8 / s; side blowing air temperature 23°C; side blowing rheumatism 90%; Internal and control the humidity within ±5%; the oiling rate is 0.80%; the spinning speed is 1000m / min. Among them, the DTY production process route is: shredder→one roller→deformation heating box→forced cooling cold rail→spindle motor→second roller→network nozzle→auxiliary roller→wire detector→wire suction gun→winding wire feeder → Oil rol...

Embodiment 2

[0027] The reduced viscosity of polyamide 56 slices is 180ml / g, the moisture content after drying is lower than 0.15%, and the size of impurities contained is lower than 6 microns. The POY-DTY process is used as raw materials to prepare the DTY high Elastic yarn, wherein in the POY-DTY process, the process route of POY is: multi-temperature zone single-screw extruder → pre-filter → static mixer → metering pump → spinning assembly → spinneret → side blowing → Oiling bundle → tunnel → winding; Among them: melt spinning temperature: 290°C; side blowing wind speed: 1.0 / s; side blowing air temperature 23°C; side blowing rheumatism 90%; Internal and control the humidity within ±5%; the oiling rate is 1.0%; the spinning speed is 3000m / min. Among them, the DTY production process route is: shredder→one roller→deformation heating box→forced cooling cold rail→spindle motor→second roller→network nozzle→auxiliary roller→wire detector→wire suction gun→winding wire feeder → Oil roller → Win...

Embodiment 3

[0029]The reduced viscosity of polyamide 56 slices is 180ml / g, the moisture content after drying is lower than 0.15%, and the size of impurities contained is lower than 6 microns. The POY-DTY process is used as raw materials to prepare the DTY high Elastic yarn, wherein in the POY-DTY process, the process route of POY is: multi-temperature zone single-screw extruder → pre-filter → static mixer → metering pump → spinning assembly → spinneret → side blowing → Oiling bundle → tunnel → winding; Among them: melt spinning temperature: 290°C; side blowing wind speed: 1.2 / s; side blowing air temperature 23°C; side blowing rheumatism 90%; Internal and control the humidity within ±5%; the oiling rate is 1.2%; the spinning speed is 5000m / min. Among them, the DTY production process route is: shredder→one roller→deformation heating box→forced cooling cold rail→spindle motor→second roller→network nozzle→auxiliary roller→wire detector→wire suction gun→winding wire feeder → Oil roller → Wind...

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Abstract

The invention relates to a POY-DTY production method for a chinlon 56DTY high stretch yarn. Antioxidant, a delustering agent and a dispersing agent are added into a polymide 56 section; the POY technology and the DTY technology are carried out in sequence, the melt spinning temperature in the POY technology ranges from 270 DEG C to 310 DEG C, and cross air blasting speed ranges from 0.3 m / s to 2.1 m / s, the cross air blasting temperature ranges from 17 DEG C to 27 DEG C, the cross air blasting moisture ranges from 60% to 90%, the oiling rate ranges from 0.70% to 1.80%, and the spinning speed ranges from 1,000 m / min to 5,500 m / min. The elasticizer speed in the DTY technology ranges from 300 m / min to 1,000 m / min, the deformation heat box temperature ranges from 210 DEG C to 235 DEG C, the D / Y specific value ranges from 1.1 to 1.5, and the draft multiple ranges from 1.10 to 1.30. The chinlon 56DTY high stretch yarn obtained based on the production method has higher breaking strength and extension, and cost is lower.

Description

[technical field] [0001] The invention relates to the technical field of nylon production technology, in particular to a POY-DTY production method of nylon 56DTY high elastic yarn. [Background technique] [0002] At present, the synthetic fibers in the chemical fibers used in textile and clothing include polyester (polyester), nylon (polyamide), spandex (polyurethane), acrylic (polyacrylonitrile), polypropylene (polypropylene), vinylon (polyethylene) in terms of output. Alcohol formal), polyvinyl chloride (polyvinyl chloride), etc. These fibers have different properties and thus are used in different ways in the field of clothing. But these chemical fiber varieties have a common feature, they are all imported from abroad for bulk textile and garment chemical fiber varieties. [0003] Polyamide fiber is the earliest chemical fiber synthetic fiber variety put into industrial production in the world. It is generally made of polyamide synthesized by polycondensation reaction o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D13/00D01D1/04D01D5/092D02J11/00D02J13/00D01F6/90D01F1/10
Inventor 于海龙
Owner 于海龙