Superfine composite fiber and processing technology thereof

A composite fiber and processing technology, applied in fiber processing, filament/line forming, conjugated synthetic polymer rayon, etc., can solve the damage of fiber microstructure, limited product variety, and mechanical properties that cannot meet the needs of use, etc. problem, to achieve the effect of uniform structure and good mechanical properties

Active Publication Date: 2016-08-17
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] And the prior art such as application number is 032345356, and application number is 2008100636505 then forms superfine fiber by means of sea-island silk spinning method or water-soluble material characteristic, but this mode has special requirement to raw material, and its product variety is limited, and the fiber itself The microstructure is destroyed, and the mechanical properties cannot meet the needs of use

Method used

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  • Superfine composite fiber and processing technology thereof
  • Superfine composite fiber and processing technology thereof
  • Superfine composite fiber and processing technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The spinneret structure of the two-component spinning assembly used in this application can be found in figure 1 or figure 2 , Wherein the bracket 1 is a six-pointed star or a five-pointed star, and the lobes 2 are distributed around the bracket 1.

[0029] Using modified nylon (COPA) and polyester (PET) as raw materials, which combine image 3 , After the modified nylon is melted by crystal drying-1 and screw extruder-1, it is measured by metering pump-1 and sent to the two-component spinning assembly. At the same time, polyester is crystallized and dried-2, screw extruder- 2 After melting, it is metered by the metering pump-2 and sent to the two-component spinning assembly. After the two-component spinning assembly is spun and extruded, it is cooled and oiled by the side air blower. After being shaped by two hot rollers, it is sent to FDY for winding to form a superfine composite fiber of modified nylon and polyester split.

[0030] The following further describes the pr...

Embodiment 2

[0035] The configuration and working principle of this embodiment are the same as that of embodiment 1, except that the relative viscosity of COPA is 2.4, the melting point is 200°C, the moisture content of dry chips is less than 100ppm, the temperature of each zone of the screw is 260~280°C; the intrinsic viscosity of PET is 0.685dl / g, the moisture content of dry chips is less than 50ppm, and the temperature of each zone of the screw is 270~290℃.

[0036] The mass ratio of COPA and PET is 40:60, the fiber section is a hexagonal star, the spinning box temperature is 290℃, the side blowing wind speed is 0.5m / s; the first heat roller speed is 2200m / min, the temperature is 80℃; The heat roller speed is 4200m / min, the temperature is 130℃, and the 100dtex / 36f ultra-fine composite FDY of different shrinkage polyester and nylon is prepared. Example 3

Embodiment 3

[0037] The configuration and working principle of this embodiment are the same as that of embodiment 1, except that the relative viscosity of COPA is 2.4, the melting point is 205°C, the moisture content of dry chips is less than 100ppm, the temperature of each zone of the screw is 260-280°C; the intrinsic viscosity of PET is 0.685dl / g, the moisture content of dry chips is less than 50ppm, and the temperature of each zone of the screw is 270~290℃.

[0038] The mass ratio of COPA and PET is 50:50, the fiber section is a hexagonal star, the spinning box temperature is 295℃, the side blowing wind speed is 0.6m / s; the first heat roller speed is 2400m / min, the temperature is 90℃; The hot roller speed is 4400m / min, the temperature is 140℃, and the ultra-fine composite FDY of 150dtex / 36f different shrinkage polyester and nylon is prepared. Example 4

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Abstract

The invention relates to a superfine composite fiber and a processing technology thereof, which belong to the technical field of filament yarn generation. The processing technology comprises the following steps of adopting modified nylon and polyester as raw materials; after melting and extruding the two raw materials through different screw extruders respectively, entering a double-component spinning component at the same time; carrying out a one-step spinning method including cooling, oiling, drafting, heat setting and winding on the sprayed melt to obtain the superfine composite fiber with the modified nylon as a 'support', and the PET (Polyester) as 'shreds'. The processing technology provided by the invention can be applied to the processing of the superfine composite fiber, faux suede, waterproof fabrics and the like. The superfine composite fiber has the advantages of stiffness and smoothness, compactness, fullness and the like in fabrics.

Description

Technical field [0001] The invention relates to an ultrafine composite fiber and its processing technology, belonging to the technical field of filament generation. Background technique [0002] The methods for preparing superfine fibers by composite spinning mainly include island-in-the-sea composite spinning and split-release composite spinning. Among them, split-release composite spinning is mainly composed of polyester-nylon composite spinning, and uses the incompatibility between polyester and nylon. It can open fiber under the action of alkali reduction or certain mechanical force to produce ultra-fine denier fiber. Compared with ordinary fibers, ultra-fine fibers have extremely small linear density and high specific surface area. The woven fabric has the characteristics of high coverage, soft hand feeling, comfortable wearing, and soft tone. It is widely used in suede and imitation peach skin. The production of velvet, microfiber leather base cloth, high-density waterproo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/08D01D5/088D01D5/096D01D5/253D01D5/30D01D10/02D01F8/12D01F8/14
CPCD01D5/08D01D5/088D01D5/096D01D5/253D01D5/30D01D10/02D01F8/12D01F8/14
Inventor 王秀华林巧巧张须臻姚玉元束永健
Owner ZHEJIANG SCI-TECH UNIV
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