Special single dyeing process for polyester knitted fabrics

A technology for knitted fabrics and fabrics, which is applied in the field of single-dyeing polyester knitted fabrics. It can solve the problems of unstable color of polyester dyed fabrics, affecting the use of clothing fabrics, and prone to fading, so as to avoid fading, improve dyeing uniformity, The effect of improving color fastness

Inactive Publication Date: 2018-02-02
盐城福汇纺织有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing dyeing method generally adopts the disperse dyeing method under high temperature conditions, and the polyester dyed fabric obtained by this dyeing method often has unstable chroma and is prone to fading problems, which affects its use as clothing fabrics

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

[0022] Embodiment 1: a kind of single-dyeing process that is specially used in polyester knitted fabrics, comprises the following steps:

[0023] (1) Send the polyester knitted fabric into the dyeing pool after being evenly beaten by a set of fabric hitting devices, add acetic acid and dyeing auxiliaries to the dyeing pool at 50°C, and adjust the pH of the system between 4 and 4.5 After the adjustment, the temperature of the system was raised to 77°C within 5 minutes, and kept stirring for 5 minutes; the dyeing auxiliaries included the following components: Yuanming powder: 77 parts; 15 parts of lignosulfonate; 8 parts of sodium acetate, by weight number of copies;

[0024] (2) Add the dye to the system at a uniform speed within 10 minutes, heat it up to 100°C at a speed of 1.5°C / min after stirring for 5 minutes, then raise the temperature to 132°C at a speed of 0.9°C / min, keep it for 45 minutes, and then heat it up at a rate of 1.1°C / min Cool down to 77°C at a faster rate; ...

Embodiment 2

[0035] Embodiment 2: a kind of single-dyeing process dedicated to polyester knitted fabrics comprises the following steps:

[0036](1) Send the polyester knitted fabric into the dyeing pool after being evenly beaten by a set of fabric hitting devices, add acetic acid and dyeing auxiliaries to the dyeing pool at 45°C, and adjust the pH of the system between 4 and 4.5 After the adjustment, the temperature of the system was raised to 75°C within 3 minutes, and kept stirring for 46 minutes; the dyeing auxiliaries included the following components: Yuanming powder: 75 parts; 15 parts of lignosulfonate; 10 parts of sodium acetate, by weight number of copies;

[0037] (2) Add the dye to the system at a uniform speed within 8 minutes, keep stirring for 3 minutes, then raise the temperature to 95°C at a speed of 1.4°C / min, then raise the temperature to 130°C at a speed of 0.8°C / min, keep it for 40 minutes, and then heat it at a rate of 1.0°C / min Cool down to 75°C at a faster rate;

...

Embodiment 3

[0048] Embodiment 3: a kind of single-dyeing process dedicated to polyester knitted fabrics comprises the following steps:

[0049] (1) Send the polyester knitted fabric into the dyeing pool after being evenly beaten by a set of fabric hitting devices, add acetic acid and dyeing auxiliaries to the dyeing pool at 55°C, and adjust the pH of the system between 4 and 4.5 After the adjustment, the temperature of the system was raised to 80°C within 6 minutes, and kept stirring for 6 minutes; the dyeing auxiliaries included the following components: Yuanming powder: 70 parts; 20 parts of lignosulfonate; 10 parts of sodium acetate, by weight number of copies;

[0050] (2) Add the dye to the system at a uniform speed within 12 minutes, heat it up to 105°C at a speed of 1.6°C / min after stirring for 6 minutes, then raise the temperature to 135°C at a speed of 1.0°C / min, keep it for 50 minutes, and then heat it at a rate of 1.3°C / min Cool down to 80°C at a faster rate;

[0051] (3) Rai...

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 special single dyeing process for polyester knitted fabrics. The process includes steps: subjecting the polyester knitted fabrics to uniform beating by a group of fabric beating devices, sending into a dying tank, and adding acetic acid and dyeing additives; adding dyes into a system; heating the system to 90-100 DEG C, then heating to 115-120 DEG C, then heating to 130-135 DEG C, performing heat preservation, and cooling to 75-80 DEG C; adding soda solution in batches; adding a bleaching combined agent; subjecting the fabrics to cleaning, softening and re-cleaning. By adoption of the dyeing scheme, great dyeing of polyester is realized; by strict step control of parameters of temperature and the like in different time periods, dyeing effects and dyeing quality stability are improved, dye fastness of the fabrics is improved, and the problem of fading can be reduced or even avoided.

Description

technical field [0001] The invention belongs to the technical field of knitted fabric dyeing, and in particular relates to a single dyeing process specially used for polyester knitted fabrics. Background technique [0002] The textile industry is one of the traditional industries in our country and has a relatively important economic status. Polyester knitted fabrics have a large market demand because of their superior comprehensive performance. To meet market demands, it is necessary to dye polyester spun and knitted fabrics. Polyester fibers are hydrophobic fibers made from polyethylene terephthalate. Due to the tight molecular chain structure of polyester and the lack of hydrophilic groups such as carboxyl and sulfonic acid groups, it cannot be dyed with direct dyes, acid dyes, and basic dyes. Existing dyeing methods generally adopt the disperse dyeing method under high temperature conditions, and the polyester dyed cloth obtained by this dyeing method often has unstabl...

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): D06P3/52D06P1/00D06P1/46D06P1/653D06P1/673D06P5/10D06L1/16D06L4/30D06M13/02D06M13/46D06M15/227D06M101/32
CPCD06P3/52D06L1/16D06L4/30D06M13/02D06M13/46D06M15/227D06M2101/32D06M2200/50D06P1/0032D06P1/46D06P1/6533D06P1/6735D06P5/10
Inventor 蔡远时
Owner 盐城福汇纺织有限公司
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