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

Continuous treatment process for supercritical fluid anhydrous oil removal and whitening of polyester products

A supercritical fluid and treatment technology, applied in the field of dyeing and finishing, can solve the problems of complex composition of three-phase system, color difference between head and tail, whitening, etc., achieve good whitening consistency, reduce the amount of whitening agent, and whitening cycle shortened effect

Pending Publication Date: 2022-07-29
石狮市中纺学服装及配饰产业研究院
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The presence of the oil agent makes the supercritical CO 2 The composition of the three-phase system of liquid whitening agent / oil agent is more complex, and the adhesion of oil agent to fibers is more likely to cause problems such as whitening spots, color points, and head-to-tail color difference.

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
  • Continuous treatment process for supercritical fluid anhydrous oil removal and whitening of polyester products
  • Continuous treatment process for supercritical fluid anhydrous oil removal and whitening of polyester products
  • Continuous treatment process for supercritical fluid anhydrous oil removal and whitening of polyester products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The present embodiment provides a continuous treatment process for supercritical fluid anhydrous degreasing and whitening of polyester products, and the steps are as follows:

[0032] S1. Build a supercritical processing system, which includes CO 2 Storage tank 10, high pressure pump 20, heater 30, auxiliary kettle 40, pretreatment kettle 50, circulation pump 60 and separation and recovery device, the gas recovery outlet of the separation and recovery device and CO 2 The storage tank 10 is connected, and the high pressure pump 20 is in the CO 2 Between the outlet of the storage tank 10 and the heater 30, the system also includes pipes and control valves on the pipes, such as figure 1 shown. Before treatment, add fluorescent whitening agent OB-1 in the auxiliary tank of auxiliary kettle 40, and the dosage is 0.3% o.w.f., and the polyester yarn is wound in the bobbin and installed in the pre-treatment kettle 50;

[0033] S2, check and adjust to the initial state (such ...

Embodiment 2

[0036] The present embodiment provides a continuous treatment process for supercritical fluid anhydrous degreasing and whitening of polyester products, and the steps are as follows:

[0037] S1. Build a supercritical processing system, which includes CO 2 Storage tank 10, high pressure pump 20, heater 30, auxiliary kettle 40, pretreatment kettle 50, circulation pump 60 and separation and recovery device, the gas recovery outlet of the separation and recovery device and CO 2 The storage tank 10 is connected, and the high pressure pump 20 is in the CO 2 Between the outlet of the storage tank 10 and the heater 30, the system also includes a pipeline and a control valve on the pipeline. Before the treatment, the fluorescent whitening agent KCB was added into the auxiliary tank of the auxiliary kettle 40, and the dosage was 0.1% o.w.f., and the polyester fiber was wound in the bobbin and installed in the pre-treatment kettle 50;

[0038] S2, check and adjust to the initial state,...

Embodiment 3

[0041] The present embodiment provides a continuous treatment process for supercritical fluid anhydrous degreasing and whitening of polyester products, and the steps are as follows:

[0042] S1. Build a supercritical processing system, which includes CO 2 Storage tank 10, high pressure pump 20, heater 30, auxiliary kettle 40, pretreatment kettle 50, circulation pump 60 and separation and recovery device, the gas recovery outlet of the separation and recovery device and CO 2 The storage tank 10 is connected, and the high pressure pump 20 is in the CO 2 Between the outlet of the storage tank 10 and the heater 30, the system also includes a pipeline and a control valve on the pipeline. Before the treatment, the fluorescent whitening agent KCB was added in the auxiliary tank of the auxiliary kettle 40, and the dosage was 0.5% o.w.f., and the polyester fabric was wound in the bobbin and installed in the pre-treatment kettle 50;

[0043] S2, check and adjust to the initial state, ...

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
whitenessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a polyester product supercritical fluid anhydrous oil removal and whitening continuous treatment process which comprises the following steps: S2, enabling supercritical fluid to flow into a pretreatment kettle, stopping when the temperature reaches 40-60 DEG C and the pressure reaches 8-15MPa, then performing heat preservation and oil removal circulation treatment on the supercritical fluid in a first circulation system, and releasing pressure and discharging after the treatment is completed; and S3, enabling the supercritical fluid to enter a pretreatment kettle from the aid kettle, stopping when the temperature reaches 80-100 DEG C and the pressure reaches 16-22 MPa, then carrying out heat preservation whitening circulation treatment on the supercritical fluid dissolved with the solid whitening agent in a second circulation system, and after the treatment is completed, releasing pressure and discharging. The polyester product is deoiled before whitening treatment, supercritical anhydrous deoiling and whitening continuous treatment is adopted, no water is generated in the whole process, water and energy are saved, the whiteness of the treated polyester product reaches 180 or above, the problems of white spots, color spots, head and tail color difference and the like do not exist, and whitening consistency is good.

Description

technical field [0001] The invention belongs to the technical field of dyeing and finishing, and in particular relates to a continuous treatment process for supercritical fluid degreasing and whitening of polyester products. Background technique [0002] Polyester has good resilience and shape retention, and is widely used in pure polyester or polyester-cotton blended fabrics. In order to improve the whiteness of fabrics, in dyeing and finishing, fluorescent whitening agents are often used to whiten pure polyester and its blended fabrics to obtain white and dazzling effects. [0003] The whitening agent mainly excites the molecules by absorbing the ultraviolet rays in the sunlight, and then returns to the ground state, and converts it into blue-violet light with lower energy to develop color, thereby offsetting the excessive yellow light reflected by the original object and achieving the whitening effect. However, in the actual use process, water quality, heavy metal ions a...

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): D06B9/06D06B21/00D06L4/643D06L4/657
CPCD06B9/06D06B21/00D06L4/643D06L4/657
Inventor 蔡涛郑环达郑福尔李娟郑来久郭友才叶双飞程淑珍
Owner 石狮市中纺学服装及配饰产业研究院
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