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Method for producing three-component self-crimped filament yarn

A three-component, self-crimping technology, used in filament/thread forming, conjugated synthetic polymer rayon, textiles and papermaking, etc. Improved properties, smaller modulus, and finer fibers

Inactive Publication Date: 2005-10-05
SHAOXING GLOBAL CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing technology, there are batches of composite spinning products in the chemical fiber textile raw material market. In terms of composite forms, they can be divided into three types: sea-island, peel-off type and skin-core type. The side-by-side production technology began to be studied in the late 1980s. However, it has not been applied in industry so far. The reason is that the flowing viscosity of the two components with different thermodynamic properties in the spinning hole, that is, the rheological properties are quite different, which is easy to bend the ejected filaments and stick to them. Cause quality problems such as floating wires and broken wires to the spinneret surface

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Method for producing three-component self-crimped filament yarn
  • Method for producing three-component self-crimped filament yarn
  • Method for producing three-component self-crimped filament yarn

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Choose DPET / PET / COP with different intrinsic viscosities as the three polyester chip components, select a certain ratio, and use polyester chips to select slices, dry slices, slices, melt, composite spinning, forming, winding, understretching and setting. The method produces 167dtex / 24FPOY, and its final product is 111dtex / 24f three-component self-crimping filament, and the intrinsic viscosity (IV) of the three-component DPET / PET / COP is 0.496 / 0.646 / 0.720 respectively. Three screw extruders for DPET / PET / COP three-component chip melting are JWM55 / 25C, JWM40 / 25C, JWM30 / 25C; three metering machines for three-component DPET / PET / COP composite spinning The pump specifications are 1.8CC / R, 0.9CC / R, 0.6CC / R; the traction equipment used for cooling and winding in the forming and winding step is a BWA860T high-speed winding machine; the equipment used for the under-stretching and shaping step is Taicang The PQ668A type flattening machine of the Spinning Instrument Factory; the ins...

Embodiment 2

[0053] Choose PTT / PET / COP with different intrinsic viscosities as the three polyester chip components, select a certain ratio, and use polyester chips to choose a process of cutting into slices, drying, slices, melting, composite spinning, forming, winding, and understretching. The method produces 167dtex / 24FPOY, and the final product is 111dtex / 24f three-component self-crimping filament. The intrinsic viscosity (IV) of PTT / PET / COP three-component is 0.920 / 0.635 / 0.722 respectively. Three screw extruders for PTT / PET / COP or PET / PTT / COP three components are JWM55 / 25C, JWM40 / 25C, JWM30 / 25C; for PTT / PET / COP or PET / PTT / COP The specifications of the three metering pumps for the melting of three-component slices are 1.8CC / R, 0.9CC / R, and 0.6CC / R; the traction equipment used for cooling and winding in the forming and winding step is BWA860T high-speed winding; The equipment used for understretching and setting steps is the PQ668A flattening machine of Taicang Spinning Instrument Factor...

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Abstract

This invention is about a kind of producing method of self-curling long filament with superthin structure, with the method of three groups fusing composite spinning. The fibers of the 3 groups are the long fibers with the titer of single fiber 1-6 dtex and the number of pores (12-72)*2. The fibers have at least 7% curling and shrinking percentage after hotly forming and at least 20% curling and shrinking percentage after alkali process. The cross-section of one single fiber is paralleling or eccentric skin-core structural circle, ellipse or snowman. One side of the cross section has fortuitous laminated structure, and the outside fiber ratio is 0.3-0.8 dtex. The producing steps of the self curling long fibers are slice choosing - slice drying - slice fusing - combined spinning - forming curling - drafting to form the shape. By mixing the spinning units and combining the units of big heat shrinking percentage in the paralleling or eccentric skin-core structural way, we can solute the soluble units during the after operation, and separate the outboard fibers of the self curling filaments, making the fibers more slender and modulus smaller. In a word, the curling and shrinking ratio, feeling and amenity have been largely improved.

Description

technical field [0001] The invention relates to a production method for preparing self-crimping filaments with ultra-fine structure by means of three-component melt composite spinning. More precisely, the present invention relates to a method in which the three components are extruded from the same spinneret to produce fibers by cooling and underdrawing. Background technique [0002] In the existing technology, there are batches of composite spinning products in the chemical fiber textile raw material market. In terms of composite forms, they can be divided into three types: sea-island, peel-off type and skin-core type. The side-by-side production technology began to be studied in the late 1980s. However, it has not been applied in industry so far. The reason is that the flowing viscosity of the two components with different thermodynamic properties in the spinning hole, that is, the rheological properties are quite different, which is easy to ben...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D01D5/30D01F8/14
Inventor 刘为民谷泽宏纲
Owner SHAOXING GLOBAL CHEM FIBER
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