Natural dyestuff dyeing and finishing process of polyester fabric

A polyester fabric and natural dye technology, applied in the field of natural dye dyeing and finishing process, can solve problems such as affecting the brightness and aesthetics of dyed fabrics, dull fabric color, damage to the ecological environment, etc. Effects of Environmental Pollution

Inactive Publication Date: 2015-11-04
TAICANG CHENGLE CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dyeing effect of natural dyes is poor, and the color fixation of the dyed fabric is low. In order to improve the color fixation, a large amount of soda ash and inorganic salts are usually added during the dyeing process, which brings serious problems for the treatment of printing and dyeing wastewater with high salt content. It is more difficult, such as direct discharge will destroy the ecological environment and lead to soil salinization
At the same time, when natural dyes are used, some mordants containing metal ions are usually used. Although the use of mordants will improve the dyeing effect, if the mordants cannot be completely removed in post-processing, it will not only pollute the environment, but also cause pollution. It will make the shade of the fabric mostly dim, affecting the vividness and aesthetics of the dyed fabric
In addition, in order to reduce the difficulty of dyeing in the subsequent dyeing process, the fiber fabric usually needs to be pretreated before dyeing, but the current pretreatment basically uses alkaline solutions such as hydrosulfite and sodium carbonate for high temperature pretreatment, which will affect the fiber. Larger damage

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A kind of natural dye dyeing and finishing process of polyester fabric, comprises the following steps:

[0040] (1) Pretreatment: Pretreatment of polyester fabrics, specifically: urea 1g / L, phosphorus-free degreasing agent TF-104M 4.5 g / L, scouring agent 1 g / L, 30% hydrogen peroxide 8 g / L, Helicase 8 g / L, α-amylase 8 g / L, conduct ultrasonic treatment in an ultrasonic water bath at 40°C for 1-2 min, bath ratio 30:1, ultrasonic frequency 45Hz, re-inject clean water after treatment 2 times, then dry;

[0041] (2) Pre-setting: Pre-setting the polyester fabric, adding heat-resistant yellowing agent FK-161 8 g / L when setting, the setting temperature is 150°C, the speed is 20m / min, and the overfeed is 5%;

[0042] (3) Modification treatment: Put the shaped polyester fabric into the plasma equipment for plasma treatment, the discharge power is 100W, the discharge frequency is 13.56MHz, and the treatment time is 3min; then put it in a water bath for treatment, and the water bat...

Embodiment 2

[0056] A kind of natural dye dyeing and finishing process of polyester fabric, comprises the following steps:

[0057] (1) Pretreatment: Pretreatment of polyester fabric, specifically: urea 1.2g / L, phosphorus-free degreasing agent TF-104M 5 g / L, scouring agent 1.2 g / L, 30% hydrogen peroxide 9g / L, Helicase 9 g / L, α-amylase 9 g / L, conduct ultrasonic treatment in an ultrasonic water bath at 40°C for 1-2 min, bath ratio 30:1, ultrasonic frequency 45 Hz, re-inject clean water after treatment 2 times, then dry;

[0058] (2) Pre-setting: Pre-setting the polyester fabric, adding heat-resistant yellowing agent FK-161 9 g / L when setting, the setting temperature is 155°C, the speed is 25m / min, and the overfeed is 8%;

[0059] (3) Modification treatment: Put the shaped polyester fabric into the plasma equipment for plasma treatment, the discharge power is 100W, the discharge frequency is 13.56MHz, and the treatment time is 3min; then put it in a water bath for treatment, and the water ba...

Embodiment 3

[0073] A kind of natural dye dyeing and finishing process of polyester fabric, comprises the following steps:

[0074] (1) Pretreatment: Pretreatment of polyester fabric, specifically: urea 1.5g / L, phosphorus-free degreasing agent TF-104M 5.5 g / L, scouring agent 1.5 g / L, 30% hydrogen peroxide 10 g / L , helicase 10 g / L, α-amylase 10 g / L, conduct ultrasonic treatment in an ultrasonic water bath at 40°C for 1-2 min, the bath ratio is 30:1, and the ultrasonic frequency is 45Hz. After the treatment, re-inject clean water Wash 2 times, then dry;

[0075] (2) Pre-setting: pre-setting the polyester fabric, adding heat-resistant yellowing agent FK-161 10 g / L when setting, the setting temperature is 160°C, the speed is 30m / min, and the overfeed is 10%;

[0076] (3) Modification treatment: Put the shaped polyester fabric into the plasma equipment for plasma treatment, the discharge power is 100W, the discharge frequency is 13.56MHz, and the treatment time is 3min; then put it in a water ...

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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PUM

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Abstract

The invention discloses a natural dyestuff dyeing and finishing process of polyester fabric. The natural dyestuff dyeing and finishing process of the polyester fabric comprises pretreatment, preshaping, modification treatment, dyeing, mordant removing, soaping, fixation, finishing, drying, shaping, calendering and winding. According to the natural dyestuff dyeing and finishing process of the polyester fabric, helicase and alhpa-amylase are adopted to conduct pretreatment, modification treatment is radically conducted on the performance of the polyester fabric through a acetic acid aqueous solution of chitosan, hydrogen peroxide and epoxy chloropropane, and the dyeing rate of the fabric is increased; in the dyeing process, a large amount of alkaline matter and inorganic salt are not used, a levelling agent and diffusant are added, the level-dyeing property is improved, natural dyestuff is used, therefore, environmental pollution is avoided, and requirements of green environmental protection are met; modification treatment and fire-retardant treatment are conducted on the fabric through montmorillonite, and the fire resistance of the fabric is high; anti-yellowing reagents are used in the preshaping and the shaping, and the final fabric is not prone to yellowing.

Description

technical field [0001] The invention relates to a process for dyeing and finishing polyester fabrics with natural dyes. Background technique [0002] Fiber is divided into chemical fiber and natural fiber. Natural fiber refers to the fiber that exists and grows in nature and has textile value. Chemical fiber is made of natural polymer compound or artificially synthesized polymer compound. Fibers with textile properties produced by silk and post-treatment processes. Chemical fibers have the advantages of light resistance, wear resistance, easy washing and drying, no mildew, no moths, etc., and are widely used in the manufacture of clothing fabrics, filter cloths, conveyor belts, hoses, ropes, fishing nets, electrical insulation threads, medical sutures , tire cord and parachute etc. [0003] Polyester is an important part of chemical fibers. Due to the physical and chemical properties of polyester itself, polyester dyeing is usually dyed with disperse dyes. In order to ensu...

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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Patent Type & Authority Applications(China)
IPC IPC(8): D06P3/52D06P1/34D06P1/673D06P1/653D06P1/44D06P5/04D06P5/08D06P5/10D06M15/03D06M13/207D06M13/47D06M11/79D06M13/46D06M10/10D06M10/08D06L3/02D06L3/11D06M101/32D06L4/12D06L4/13
Inventor 陈秀珍
Owner TAICANG CHENGLE CHEM FIBER
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