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Cold-pad batch dyeing process for loose fibers

A technology for dyeing and dispersing fibers by cold pad stacking, which is applied in liquid/gas/vapor fiber/sliver/roving processing, textile processing machine accessories, textile material processing, etc. Loose fibers cannot be rolled and stacked to achieve the effect of overcoming uneven dyeing, ensuring uniform dyeing, and better and even leaching.

Active Publication Date: 2014-05-07
绍兴国周针织科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Loose fibers are usually dyed by dyeing vats, and the loose fibers can be dyed quickly by adding dye accelerators and other auxiliary agents, but the dyeing process requires a large amount of dye accelerators such as salt or sodium sulfate, which increases the dyeing cost and subsequent The cost of water washing requires an additional power supply to provide a large amount of steam during the processing process. The bath ratio is large, the additives are many, the cost is high, the energy consumption is large, and the water consumption is high. Cold pad-batch dyeing mainly includes dipping, stacking and water washing. In the first stage, the fabric is soaked in the dye solution at low temperature, and then piled up in rolls, piled up for a certain period of time and slowly rotated to complete the process of dye adsorption, diffusion and color fixation, and finally washed with water to complete the dyeing. This dyeing method is only It only needs to add a small amount of lye, avoiding the defects of many dyeing accelerators and large water consumption in the dyeing process, and the cost and energy consumption can be greatly reduced, but based on conventional cognition and the technical status of cold pad batch dyeing , cold pad-batch dyeing is only suitable for continuous structure fabrics or fabrics, so cold pad-batch dyeing is only suitable for dyeing of continuous structure materials such as fabrics or fabrics. The loose fibers in a discontinuous state cannot be piled up during the stacking process. Therefore, cold pad-batch dyeing is not suitable for loose fiber dyeing

Method used

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  • Cold-pad batch dyeing process for loose fibers
  • Cold-pad batch dyeing process for loose fibers
  • Cold-pad batch dyeing process for loose fibers

Examples

Experimental program
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Effect test

Embodiment 1

[0030] In the present embodiment, the cotton fiber is dyed special black, combined with figure 1 , the dyeing process of bulk fiber is: dipping (first dipping → drying → second dipping) → rotary cold stack → adding squeezed water → post-treatment, among which,

[0031] (1) Soaking: Put the loose fiber or loose fiber cake in the leaching device 1. The way of leaching is two immersion and one pressing to ensure that the loose fiber or loose fiber cake is absorbed evenly. The composition of the dyeing liquid is: H- ED reactive black 18g / L, 3RS yellow 2.2 g / L, 3BS red 3.0 g / L, NaOH 5 g / L, water glass 2.8 g / L, liquor ratio 1:4.5, dyeing at room temperature;

[0032]Wherein, two dipping and one squeezing include the first dipping, squeezing and second dipping carried out in sequence, the loose fiber or loose fiber cake is first dipped in the dye liquor of dipping device 11, and the first dipping The time is 10 minutes, and the first dipping plays the purpose of pretreatment, and th...

Embodiment 2

[0040] The setting and working principle of this embodiment are the same as that of Embodiment 1, the difference is that the loose fiber to be dyed is viscose fiber, and the viscose fiber is dyed bright red. Dry pressure is 1.8kg / cm 2 , the drying time is 5 minutes, and the second dipping time is 15 minutes. Among them, the conditions of the first dipping and the second dipping are the same, the bath ratio is 1:4.5, and the components of the dyeing solution: 3BS red 7.5 g / L, B-X Yuanqing 1.5 g / L, NaOH 2g / L, water glass 1 g / L, dyeing at room temperature; (2) Rotary cold pile: the rotating speed is 8r / min, the cold pile temperature is room temperature, and the cold pile processing time is 12 hours; (3) add squeezed water: the squeezed pressure is 2.8kg / cm 2 , The processing time is 8 minutes, the leak hole diameter is 3mm, and the opening rate is 70%.

Embodiment 3

[0042] The bulk fiber to be dyed in this embodiment is cotton fiber, and the dyed color is bright red. (1) Squeeze: the first dipping time is 30 minutes, and the drying pressure is 2 kg / cm 2 , the drying time is 5 minutes, and the second dipping time is 10 minutes, wherein, the liquor ratio of the first dipping and the second dipping is 1:4, and the components of the dyeing solution: 3BS red 7.5 g / L, B-X Yuanqing 1.5 g / L, NaOH 2g / L, water glass 1 g / L, dyeing at room temperature; (2) Rotary cold pile: the rotation speed is 15r / min, the cold pile temperature is room temperature, and the cold pile treatment time is 11 hours; (3) Add squeeze water: squeeze pressure is 1.5kg / cm 2 , The processing time is 15 minutes, the leak hole diameter is 2mm, and the opening rate is 50%. The rest of the settings and working principles are the same as in Embodiment 1.

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Abstract

The invention belongs to the technical field of loose fiber dyeing and relates to cold-pad batch dyeing process for loose fibers. The cold-pad batch dyeing process for loose fibers comprises the steps of soaking and squeezing, rotating type cold-patch treatment, pressing and water squeezing and post-treatment. The loose fibers are soaked and squeezed in a twice soaking and once squeezing mode, the rotating type cold-patch treatment is then conducted, the loose fibers are pressed and water is squeezed out after the rotating type cold-patch treatment is conducted, and after the water and dye in a loose fiber cake or loose fibers are squeezed out, the loose fiber cake or loose fibers are sent for post-treatments of drying and the like. The cold-pad batch dyeing process for loose fibers is applied to cold-pad batch dyeing of the loose fibers and has the advantages of being uniform in dyeing, small in water consumption and the like. In addition, procedures are simple.

Description

technical field [0001] The invention relates to a bulk fiber cold pad-batch dyeing process and belongs to the technical field of bulk fiber dyeing. Background technique [0002] Loose fibers are usually dyed by dyeing vats, and the loose fibers can be dyed quickly by adding dye accelerators and other auxiliary agents, but the dyeing process requires a large amount of dye accelerators such as salt or sodium sulfate, which increases the dyeing cost and subsequent The cost of water washing requires an additional power supply to provide a large amount of steam during the processing process. The bath ratio is large, the additives are many, the cost is high, the energy consumption is large, and the water consumption is high. Cold pad-batch dyeing mainly includes dipping, stacking and water washing. In the first stage, the fabric is soaked in the dye solution at low temperature, and then piled up in rolls, piled up for a certain period of time and slowly rotated to complete the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06B3/02D06B5/14D06B23/00D06B23/20
CPCD06B3/02
Inventor 金国周孙国民倪新苗杨苹峰谢德棋钟水英
Owner 绍兴国周针织科技有限公司
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