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

Dyeing process of regenerated polyester yarn

A recycled polyester and process technology, which is applied in the field of polyester dyeing technology, can solve the problems such as the difficulty of dyeing recycled polyester, and achieve the effect of uniform and firm dyeing

Active Publication Date: 2020-06-26
中山市源兴恒纺织品有限公司
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of difficult dyeing of existing regenerated polyester, the present invention proposes a dyeing process of regenerated polyester yarn, which pre-treats regenerated polyester and cooperates with a special dyeing process to achieve good dyeing effect

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
  • Dyeing process of regenerated polyester yarn
  • Dyeing process of regenerated polyester yarn
  • Dyeing process of regenerated polyester yarn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A dyeing process of regenerated polyester yarn, comprising the following steps:

[0031] S1, pre-processing

[0032] Soak the regenerated polyester yarn in an aqueous solution with a degreasing agent content of 2%, raise the temperature to 130°C, keep it warm for 20min, and then cool down to 25°C (room temperature); the degreasing agent contains 35-40wt.% surface active agent.

[0033] S2, dyeing

[0034] S2.1. Soak the regenerated polyester yarn after pretreatment in the dyeing solution, which contains 0.5% leveling agent and 0.6% dark dye by mass percentage in the dyeing solution, and adjust the pH value to 4-5 by adding acetic acid ; The leveling agent contains 25% polyoxyalkylene ether sulfate ester salt, 45% ethoxy ester compound, 10% solvent, and 20% water by mass percentage.

[0035] S2.2. Raise the temperature to 80°C at a rate of 1.5°C / min, and keep it warm for 10 minutes.

[0036] S2.3. Then raise the temperature to 130°C at a rate of 1.5°C / min, keep it wa...

Embodiment 2

[0043] A dyeing process of regenerated polyester yarn, comprising the following steps:

[0044] S1, pre-processing

[0045] Soak the regenerated polyester yarn in an aqueous solution with a degreasing agent content of 2.5%, raise the temperature to 125°C, keep it warm for 25min, and then cool down to 25°C (room temperature); the degreasing agent contains 35-40wt.% surface active agent.

[0046] S2, dyeing

[0047] S2.1. Soak the regenerated polyester yarn after pretreatment in the dyeing solution, which contains 0.45% leveling agent and 0.6% dark dye by mass percentage in the dyeing solution, and adjust the pH value to 4-5 with acetic acid ; The leveling agent contains 25% polyoxyalkylene ether sulfate ester salt, 45% ethoxy ester compound, 10% solvent, and 20% water by mass percentage.

[0048] S2.2. Raise the temperature to 85°C at a rate of 1.5°C / min, and keep it warm for 10 minutes.

[0049] S2.3. Then raise the temperature to 135°C at a rate of 1.5°C / min, keep it warm...

Embodiment 3

[0056] A dyeing process of regenerated polyester yarn, comprising the following steps:

[0057] S1, pre-processing

[0058] Soak the regenerated polyester yarn in an aqueous solution with a degreasing agent content of 2%, raise the temperature to 130°C, keep it warm for 25min, and then cool down to 25°C (room temperature); the degreasing agent contains 35-40wt.% surface active agent.

[0059] S2, dyeing

[0060] S2.1. Soak the regenerated polyester yarn after pretreatment in the dyeing solution, which contains 0.6% leveling agent and 0.7% light-colored dye by mass percentage, and adjust the pH value to 4-5 by adding acetic acid ; The leveling agent contains 25% polyoxyalkylene ether sulfate ester salt, 45% ethoxy ester compound, 10% solvent, and 20% water by mass percentage.

[0061] S2.2. Raise the temperature to 80°C at a rate of 1.5°C / min, and keep it warm for 10 minutes.

[0062] S2.3. Then raise the temperature to 130°C at a rate of 1.5°C / min, keep it warm for 30 minu...

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

No PUM Login to View More

Abstract

The invention provides a dyeing process of regenerated polyester yarn. The dyeing process comprises the steps that a degreasing agent is added, temperature is raised, and soaking is performed for pretreatment; a levelling agent and dyestuff are adopted for cooperative dyeing; and softening treatment is performed after cleaning. According to the dyeing process of the regenerated polyester yarn, theregenerated polyester yarn is pretreated through the degreasing agent, the degreasing agent contains high-concentration surfactant, the regenerated polyester yarn is placed under the temperature of 120-130 DEG C for 20min, complicated components of the regenerated polyester yarn are fully treated, and the dyestuff can effectively adhere to the surface of the pretreated regenerated polyester yarnfor dyeing; the levelling agent is added in the dyeing process, and in cooperation with a specific temperature rise rate and a thermal insulation process, uniform dispersion of the dyestuff is promoted, and dyeing is uniform and fast; and softening treatment is performed on the dyed regenerated polyester yarn, a softening agent is added, so that the dyed regenerated polyester yarn obtains a smoothsurface, pigments are further locked, and color fastness is improved.

Description

technical field [0001] The invention relates to a polyester dyeing process, in particular to a dyeing process of regenerated polyester yarn. Background technique [0002] Regenerated polyester fiber refers to the use of polyester cloth, waste polyester bottle flakes, spinning waste, foam material, pulp block as raw materials, waste bottle flakes are crushed and cleaned, the mixture of various materials is dried, melt extruded, spun Filament, winding, clustering, drawing, crimping, relaxation heat setting, and cutting to form polyester fibers of different lengths. [0003] Regenerated polyester belongs to the full use of renewable resources. It has a broad market because of its low cost and good performance. There are many different varieties of recycled polyester, which are generally used in the filling material industry for furniture and toys, the shoe material industry, the needle-punched cotton industry, and the stitched cloth industry. However, due to the complex compo...

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 Applications(China)
IPC IPC(8): D06P1/613D06P1/44D06P3/52D06P5/02D06P5/10
CPCD06P1/613D06P1/445D06P3/52D06P5/02D06P5/10
Inventor 林爱卿
Owner 中山市源兴恒纺织品有限公司
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