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Tech. for bobbin dyeing of stretch yarn

A package dyeing and yarn technology, applied in the field of bleaching and dyeing, can solve the problems of not reaching the inner and outer layers, easy to rot, and increase costs, etc., and achieve the effect of high quality and stable elasticity

Inactive Publication Date: 2006-06-28
金国周
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the paper tube is easy to become rotten and deformed after being soaked in water and dehydrated, which will cause the consequences of being unable to wind or unwind endlessly
On the other hand, in the absence of a certain temperature, simple immersion treatment cannot achieve the pre-shrinkage effect with consistent inner and outer layers and stable elasticity, and it also increases the burden of wastewater treatment
However, dehydration and second winding after the pretreatment process have limitations. It is acceptable for chemical fibers, but for elastic yarns containing cotton fibers such as cotton / spandex, cotton / nylon and their blends, cotton fibers are hygroscopic. High, the second loose winding must go through the drying process, which is labor-intensive and time-consuming, and increases the cost

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

[0012] To dye the package of 75D nylon high elastic yarn, the steps are as follows:

[0013] 1) Pre-setting: Put the raw yarn into the vacuum yarn steaming and setting machine, vacuumize, and take away the air in the steaming machine and the yarn gap, so that the negative pressure in the machine reaches 150mbar, and then heat the water tank in the machine The water is raised to 85°C at a heating rate of 4°C / min to generate saturated steam at a low temperature to pre-set the yarn for 25 minutes.

[0014] 2) Loose winding: pre-shaped nylon high-elastic yarn with stable elasticity, the weight of the pellets wound by ordinary winding machines is 1000g, and the density is 0.36g / cm 3 cheese.

[0015] 3) Carry out pretreatment, dyeing, posttreatment, dehydration and drying in sequence according to conventional and traditional processes. The parameters of each process in this example are as follows:

[0016] Pre-treatment: deoiling 2g / l, scouring agent 1g / l, temperature 75°C, time 2...

Embodiment 2

[0022] To dye the bobbins of 32S cotton + 20D spandex core-wrapped yarn, the steps are as follows:

[0023] 1) Pre-setting: Place the 32S cotton + 20D spandex core-covered yarn tightly wound on the paper tube in a vacuum yarn steaming and setting machine for pre-setting, vacuumize for the first time, and heat up at a rate of 5°C / min. The speed was raised to 65°C, steamed for 5 minutes, vacuumed for the second time, and the temperature was raised to 105°C at a rate of 3°C / min, and steamed for 30 minutes.

[0024] 2) Loose winding: the pre-shaped cotton / spandex core-wrapped paper bobbin is wound on the dyeing bobbin by an ordinary winding machine, and the density is controlled at 0.3g / cm 3 .

[0025] 3) Carry out pretreatment, dyeing, posttreatment, dehydration and drying in sequence according to the conventional traditional process. The parameters in this example are as follows:

[0026] Pretreatment: scouring enzyme 1g / l, pH value: 8 (adjusted by soda ash), temperature 55°C,...

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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Abstract

The invention relates to resiliency yarn cone dyeing technique. It includes the following working procedures: loose type coning; pre-processing; dyeing; post processing; dehydrating; drying. Its feature is that it practices once or two times preshrinking forming before loose type coning procedure. This can prevent out layer yarn from covering the inner layer. Compared with the current technique, the invention is simple, economic, and stable; and it can make dye fully permeate into inner, middle, and outer layers yarn to ensure no color difference.

Description

technical field [0001] The invention relates to a bobbin dyeing process of elastic yarn, which belongs to the technical field of bleaching and dyeing. Background technique [0002] "There is no fabric without elastic", although the formulation is a bit exaggerated, it shows that elastic fabrics are more and more widely used in the textile field. In the dyeing and finishing industry, the package dyeing of elastic yarns, shrinkage yarns, chemical fiber filaments and their blended yarns (hereinafter collectively referred to as elastic yarns) has been a difficult problem for many years. This is mainly because the elastic yarn will cause uneven density of the package due to high and irregular shrinkage during dyeing, resulting in uneven penetration of the dye solution, resulting in color flowering. For dyeing stretch yarn, the method that prior art adopts has two kinds, and the one, adopts traditional skein dyeing method, and this method has been gradually eliminated because of ...

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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IPC IPC(8): D06B5/18
Inventor 金国周金黄锦
Owner 金国周
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