Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of ptt/pet two-component elastic yarn and preparation method thereof

An elastic yarn, two-component technology, applied in filament/thread forming, conjugated synthetic polymer artificial filament, fiber treatment, etc., can solve problems such as unevenness of strips, achieve good crimp performance, elasticity Good, wide-ranging effects

Active Publication Date: 2021-11-16
JIANGSU HENGLI CHEM FIBER
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a PTT / PET two-component elastic yarn and its preparation method, with the purpose of solving the problem of random "strip-like unevenness" when PTT / PET side-by-side composite fibers are applied to knitted fabric products in the prior art. question

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
  • A kind of ptt/pet two-component elastic yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A kind of preparation method of PTT / PET two-component elastic yarn, according to FDY process, the PET melt (intrinsic viscosity is 0.52dL / g) and PTT melt (intrinsic viscosity is 1.2dL / g) that the mass ratio is 50:50 g) After distribution, extrude from the spinneret m (round) and spinneret n (round) on the same spinneret to make FDY filaments and then perform relaxation heat treatment to obtain PTT / PET two-component elastic filaments ;

[0047] The distribution refers to distributing the PTT melt through the distribution hole A, and at the same time distributing the PET melt through the distribution hole B to the spinneret m; distributing the PTT melt through the distribution hole C, and simultaneously distributing the PET melt through the distribution hole D In the spinneret hole n; at the entrance of distribution hole A, distribution hole B, distribution hole C and distribution hole D, the apparent viscosity of PET melt and PTT melt differs by 5%; distribution hole A a...

Embodiment 2

[0055]A kind of preparation method of PTT / PET two-component elastic yarn, according to FDY process, the PET melt (intrinsic viscosity is 0.56dL / g) and PTT melt (intrinsic viscosity is 1.13dL / g) that the mass ratio is 50:50 g) After distribution, extrude from the spinneret m (ellipse) and spinneret n (round) on the same spinneret to make FDY filaments and then perform relaxation heat treatment to obtain PTT / PET two-component elastic filaments ;

[0056] The distribution refers to distributing the PTT melt through the distribution hole A, and at the same time distributing the PET melt through the distribution hole B to the spinneret m; distributing the PTT melt through the distribution hole C, and simultaneously distributing the PET melt through the distribution hole D In the spinneret hole n; at the entrance of distribution hole A, distribution hole B, distribution hole C and distribution hole D, the apparent viscosity difference of PET melt and PTT melt is 3.6%; distribution h...

Embodiment 3

[0064] A kind of preparation method of PTT / PET two-component elastic yarn, according to FDY process, the PET melt (intrinsic viscosity is 0.58dL / g) and PTT melt (intrinsic viscosity is 1.17dL / g) that the mass ratio is 50:50 g) After distribution, extrude from the spinneret m (round) and spinneret n (round) on the same spinneret to make FDY filaments and then perform relaxation heat treatment to obtain PTT / PET two-component elastic filaments ;

[0065] The distribution refers to distributing the PTT melt through the distribution hole A, and at the same time distributing the PET melt through the distribution hole B to the spinneret m; distributing the PTT melt through the distribution hole C, and simultaneously distributing the PET melt through the distribution hole D In the spinneret hole n; at the entrance of distribution hole A, distribution hole B, distribution hole C and distribution hole D, the apparent viscosity difference of PET melt and PTT melt is 3.2%; distribution ho...

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
shrinkageaaaaaaaaaa
stabilityaaaaaaaaaa
elastic recovery rateaaaaaaaaaa
Login to View More

Abstract

The invention relates to a PTT / PET two-component elastic yarn and its preparation method. According to the FDY process, after distributing PET and PTT melts, they are extruded from spinneret holes m and n on the same spinneret to make FDY yarn After relaxation heat treatment, the PTT and PET melts flow through the distribution holes A and B to the spinneret m, and through the distribution holes C and D to the spinneret n, and in the distribution holes A, B, C, D At the entrance, the apparent viscosities of the PET melt and the PTT melt differ by no more than 5%, the distribution holes A and B are cylindrical holes of equal height, and the diameter ratio is 1.24:1, and the distribution holes C and D are cylindrical holes of equal height , and the diameter ratio is 1:1.24; the prepared bicomponent elastic yarn is composed of multiple PTT / PET side-by-side composite monofilaments with different ratios, and the curling directions of the monofilaments in the bicomponent elastic yarn are randomly distributed. The PTT / PET bicomponent elastic yarn knitted fabric of the present invention does not have the problem of "striped unevenness".

Description

technical field [0001] The invention belongs to the technical field of polyester fibers, and relates to a PTT / PET two-component elastic yarn and a preparation method thereof. Background technique [0002] Generally speaking, the surface of chemical fibers is relatively smooth, without crimps, the gaps between fibers are small, and the bulkiness and fullness of the products are poor. Physical or chemical methods are usually used to make the fibers have certain curls, but such curls are often not durable enough, and Curl is low. Composite fibers are different from ordinary single-component chemical fibers. There are two components with different properties such as shrinkage law and modulus in the cross-section. Due to the difference in the stress-strain behavior of the two polymers distributed on both sides, the fibers are curled. , this crimp is not produced by heat setting performance, it is the characteristic of the composite fiber itself, called self-crimping. [0003] T...

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
Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/32D02G1/20D01F8/14
CPCD01D5/32D01F8/14D02G1/20D10B2401/061
Inventor 汤方明范红卫尹立新王山水王丽丽
Owner JIANGSU HENGLI CHEM FIBER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com