Unlock instant, AI-driven research and patent intelligence for your innovation.

PET/modified PET two-component elastic yarn and preparation method thereof

A PET-PA6, two-component technology, applied in the field of polyester fiber, can solve problems such as unevenness of strips

Active Publication Date: 2020-04-21
JIANGSU HENGLI CHEM FIBER
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a PET / modified PET two-component elastic yarn and its preparation method. "The problem

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • PET/modified PET two-component elastic yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The preparation method of PET / modified PET two-component elastic yarn, its preparation process is as follows:

[0041] (1) PET / modified PET two-component elastic yarn is extruded on the same spinneret; specifically:

[0042] Divide PET melt (intrinsic viscosity 0.5dL / g) into two paths: one path is directly extruded after distribution; the other path is mixed with PET-PA6 copolymer melt (intrinsic viscosity 0.65dL / g, The mass ratio of PET melt is 50:50) is extruded after distributing by side-by-side compound spinning mode together;

[0043] The ratio of the number of spinneret holes m (round) that are directly extruded and flowed through to the number of spinneret holes n (round) that are extruded and flowed through after being distributed in a parallel composite spinning mode is 1:7; The ratio of the equivalent diameter of the spinneret m to the spinneret n is 1:1; all the spinneret holes are distributed in concentric circles, the spinneret holes on the same circle are...

Embodiment 2

[0050] The preparation method of PET / modified PET two-component elastic yarn, its preparation process is as follows:

[0051] (1) PET / modified PET two-component elastic yarn is extruded on the same spinneret; specifically:

[0052] Divide the PET melt (with an intrinsic viscosity of 0.56dL / g) into two paths: one path is directly extruded after distribution; The mass ratio of PET melt is 50:50) is extruded after distributing by side-by-side compound spinning mode together;

[0053] The ratio of the number of spinneret holes m (elliptic) that are directly extruded and flowed through to the number of spinneret holes n (circular) that are extruded and flowed through after being distributed in a parallel composite spinning mode is 1:6; The ratio of the equivalent diameter of the spinneret m to the spinneret n is 1:1; all the spinneret holes are distributed in concentric circles, the spinneret holes on the same circle are all m or all are n, and the number of spinneret holes on the...

Embodiment 3

[0060] The preparation method of PET / modified PET two-component elastic yarn, its preparation process is as follows:

[0061] (1) PET / modified PET two-component elastic yarn is extruded on the same spinneret; specifically:

[0062]Divide PET melt (intrinsic viscosity 0.58dL / g) into two paths: one path is directly extruded after distribution; the other path is mixed with PET-PA6 copolymer melt (intrinsic viscosity 0.63dL / g, The mass ratio of PET melt is 50:50) is extruded after distributing by side-by-side compound spinning mode together;

[0063] The ratio of the number of spinneret holes m (triangles) that are directly extruded and flowed through to the number of spinneret holes n (circular) that are extruded and flowed through after being distributed in a parallel composite spinning mode is 1:7; The ratio of the equivalent diameter of the hole m to the spinneret hole n is 1:1; all the spinneret holes are distributed in concentric circles, the spinneret holes on the same cir...

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
Login to View More

PUM

PropertyMeasurementUnit
Intrinsic viscosityaaaaaaaaaa
Intrinsic viscosityaaaaaaaaaa
Breaking strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a PET / modified PET two-component elastic yarn and a preparation method thereof. The preparation method comprises the following steps of extruding the PET / modified PET two-component elastic yarn on a same spinneret plate, and splitting a PET melt into two paths: one path is directly extruded after being distributed, and the other path is extruded after being distributed ina parallel composite spinning mode along with a PET / PA6 copolymer melt; the ratio of the number of the directly extruded flowing spinneret holes m to the number of the extruded flowing spinneret holesn after being distributed in a parallel composite spinning mode is 1: 6 to 7; and the PET / modified PET two-component elastic yarn is prepared according to an FDY process after extrusion; and the prepared two-component elastic yarn is composed of a PET monofilament and a PET / PET-PA6 copolymer parallel composite monofilament, and the monofilament curl direction is randomly distributed. The preparation method provided by the invention effectively solves the problem of "strip unevenness" formed in knitted fabrics of a PET / PET-PA6 copolymer parallel composite fiber.

Description

technical field [0001] The invention belongs to the technical field of polyester fibers, and relates to a PET / modified PET two-component elastic yarn and a preparation method thereof. Background technique [0002] Curl is an important indicator of fibers, affecting the textile processing and final product characteristics and application performance. [0003] In the big family of two-component composite fibers, the side-by-side two-component composite fiber is an important member. It uses the difference in thermal shrinkage properties of the two components to make the fiber bend away from the fiber axis, showing a permanent Three-dimensional spiral crimp for a wool fiber-like curl. The crimping of this kind of fiber does not require the deformation processing of ordinary thermoplastic fibers when they are crimped, and avoids the thermal damage of chemical fibers, so it is usually called "self-crimping fiber", also known as three-dimensional crimping fiber. Long-lasting stab...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): D01D5/32D01D5/22D01D5/253D01D4/02D01D10/02D01F8/14D01F8/12
CPCD01D5/32D01D5/22D01D5/253D01D4/02D01D10/02D01F8/14D01F8/12D10B2331/04D10B2331/02D10B2401/061
Inventor 王山水范红卫汤方明魏存宏
Owner JIANGSU HENGLI CHEM FIBER