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Skin core composite fiber, manufacturing method thereof and fabric

A composite fiber and manufacturing method technology, applied in the field of fibers, can solve the problems of high limit viscosity of polyester, decrease of polymer polymerization degree, decrease of spinning processing efficiency, etc., and achieve the effect of good spinnability and low modulus

Active Publication Date: 2013-04-03
SHINKONG SYNTHETIC FIBERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method will lead to a serious decrease in spinning and post-processing efficiency due to the substantial decrease in the degree of polymerization of the polymer.
[0003] In addition, there are other methods for surface treatment of polyester fibers and their woven fabrics after processing, but the engineering used in this method is quite complicated and can only maintain temporary effects, and will damage the feel of the fabric, so it is only applicable to Specific purposes, become a major shortcoming in use
[0004] In addition, Japanese Patent Publication No. 2009-242952 discloses a method for manufacturing low-strength fibers, which is to obtain high-direction undrawn filaments from polyester with an intrinsic viscosity of 0.6~1.5 through high-speed winding, and then draw Low-strength fibers are produced by stretching and setting, but because the invention adopts two-stage manufacturing, the cost will be relatively increased and the intrinsic viscosity of the polyester is high. To make low-strength fibers requires complicated procedures, so there are production management problems. Difficult and costly problem

Method used

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  • Skin core composite fiber, manufacturing method thereof and fabric
  • Skin core composite fiber, manufacturing method thereof and fabric
  • Skin core composite fiber, manufacturing method thereof and fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Take polyamide 6 as a skin layer component with a relative viscosity RV of 2.8 and polyethylene terephthalate (PET) as a core layer component with an intrinsic viscosity IV of 0.5dl / g, and carry out in a compound ratio of 50:50 Metering, the polymer is diverted and melted and extruded through an extruder with a core-shaped cross-section spinning nozzle. At this time, the spinning temperature is controlled at 285°C, and then the cooling wind speed is 0.5m / s, and the cooling wind temperature is 18°C. Cooling and solidification, oiling, and spinning and coiling at a spinning speed of 4000m / min, a stretching temperature of 85°C, a setting temperature of 150°C, and a draw ratio of 2.35 to obtain 75d / 36f fibers. The fiber breaking strength was obtained through measurement 1.8g / d, fiber elongation at break 35% and Mod0~5% is 24g / d (see Table 1).

Embodiment 2

[0069] The cationic dyeable polyester (CDP, which is polyethylene terephthalate containing 1.5 % of 5-sodium sulfonate-1,3-isophthalic acid), measured in a composite ratio of 50:50, the polymer is diverted and melted and extruded through an extruder with a core-shaped cross-section spinning nozzle At this time, the spinning temperature is controlled at 275°C, and then cooled and solidified by cooling wind speed of 0.5m / s and cooling wind temperature of 18°C, oiled, and then spinning speed is 4000m / min, stretching temperature is 85°C, and setting temperature is 150°C. ℃ and draw ratio 2.05 for spinning and coiling to obtain 75d / 36f fibers, the fiber breaking strength is 1.6g / d, the fiber breaking elongation is 35% and Mod0~5% is 19g / d (such as Table 1).

Embodiment 3

[0071] Get the polyamide 6 as skin layer component that relative viscosity RV is 2.8 and the polytrimethylene terephthalate (PTT) as core layer component that intrinsic viscosity IV is 0.7dl / g, measure with compound ratio 50:50 mode, The polymer is diverted and melted and extruded through an extruder with a core-shaped cross-section spinning nozzle. At this time, the spinning temperature is controlled at 270°C, and then cooled and solidified by a cooling wind speed of 0.5m / s and a cooling wind temperature of 18°C. , oiled, and then spinning and coiling at a spinning speed of 4000m / min, a stretching temperature of 80°C, a setting temperature of 140°C, and a draw ratio of 1.95 to obtain a fiber of 75d / 36f. It is known through measurement that the fiber breaking strength 2.0g / d, fiber elongation at break 35% and Mod0~5% are 22.6g / d (see Table 1).

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Abstract

The invention provides a skin core composite fiber, a manufacturing method thereof and a fabric. The skin core composite fiber is formed by composing a skin layer made of polyamide and a core layer made of polyester and satisfies the following properties: (1) 0.6g / d <fiber fracture strength <2.5g / d; (2) 15% <fiber fracture elongation rate <50%; (3) 6g / d <fiber modulus 0-5% (Mod0-5%) <40g / d; wherein Mod0-5% = (strength at fiber elongation 5%) / (0.05).

Description

technical field [0001] The present invention relates to fibers, in particular to a composite fiber with low strength and low modulus. The invention also relates to methods of making the fibers and related fabrics. Background technique [0002] In the general polyester spinning industry procedure, in order to manufacture low-strength fibers, the generally used manufacturing method is to use polyester spinning with a low degree of polymerization to obtain low-strength polyester fibers. However, this method will cause a serious decline in spinning and post-processing efficiency due to a substantial decrease in the degree of polymerization of the polymer. [0003] In addition, there are other methods for surface treatment of polyester fibers and their woven fabrics after processing, but the engineering used in this method is quite complicated and can only maintain temporary effects, and will damage the feel of the fabric, so it is only applicable to Specific purposes have beco...

Claims

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Application Information

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IPC IPC(8): D01F8/12D01F8/14D01F1/10D01D5/34D03D15/00D03D15/292D03D15/30D03D15/50
Inventor 吴国忠
Owner SHINKONG SYNTHETIC FIBERS
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