Cold-pad batch dyeing process of loose fibers

A technology of cold pad pile dyeing and loose fibers, applied in the field of loose fiber dyeing, can solve the problems of unsatisfactory combination of dyes and loose fibers, easy fading of loose fibers, and high process cost, so as to overcome uneven distribution of dye liquor and increase dye uptake. The effect of efficiency and simple process

Inactive Publication Date: 2016-06-15
朱忠良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned prior art, the leaching and pressing process is complicated, the water consumption is large, and the process cost is high. At the same time, the combination of dyes and bulk fibers is not ideal, and the dye uptake rate is low. The dyed loose fibers are easily washed after repeated washing. Discoloration and other problems, the present invention provides a bulk fiber cold pad-batch dyeing process, which combines the ultrasonic dyeing process with the cold-batch process to save costs and improve the dyeing rate of bulk fibers

Method used

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  • Cold-pad batch dyeing process of loose fibers

Examples

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Embodiment 1

[0038] In this embodiment, cotton fibers are dyed black, and the dyeing process of loose fibers is: ultrasonic dyeing→rotary cold stack→pressurized water→post-treatment, wherein

[0039] (1) Ultrasonic dyeing: put the prepared dye into the ultrasonic dyer and heat up to 65°C, turn on the ultrasonic wave, set the frequency at 35Hz and heat up to 95°C at a rate of 0.5°C / min, then add carboxylated carbon nanospheres and leveling agent and stirred at a speed of 30r / s for 50min, wherein the mass ratio of carboxylated carbon nanospheres to dyestuffs was 0.007:1, and the mass ratio of leveling agent to dyestuffs was 0.04:1, and was put into loose fibers for dyeing for 3.5h; (2) Rotary cold stack: place the impregnated bulk fiber or loose fiber cake in a horizontal state, and conduct a rotary cold stack in a sealed environment with a rotation speed of 10r / min and a cold stack temperature of room temperature (20-25°C ), the cold stack processing time is 10 hours; wherein, the rotary co...

Embodiment 2

[0044] (1) Ultrasonic dyeing: In addition to putting the prepared dye in an ultrasonic dyer and heating it up to 60°C, ultrasonically, set the frequency at 30Hz and raise the temperature to 90°C at a rate of 0.5°C / min, and stir at a rate of 20r / s 60min, the mass ratio of carboxylated carbon nanospheres and dyestuff is 0.005:1, the mass ratio of leveling agent and dyestuff is 0.03:1, put into loose fiber dyeing 3h, other steps are identical with step (1) in embodiment 1 .

[0045] (2) Rotary cold pile: except that the rotating speed is 5r / min, the cold pile temperature is room temperature (20-25° C.), and the cold pile treatment time is 12 hours, other steps are the same as step (2) in Example 1.

[0046] (3) and (4) are all the same as steps (3) and (4) in Example 1.

Embodiment 3

[0048] (1) Ultrasonic dyeing: In addition to putting the prepared dye in an ultrasonic dyer and heating it up to 70°C, ultrasonically, set the frequency at 40Hz and raise the temperature to 100°C at a rate of 0.5°C / min, and stir at a rate of 40r / s 40min, the mass ratio of carboxylated carbon nanospheres and dyestuff is 0.01:1, the mass ratio of leveling agent and dyestuff is 0.06:1, put into loose fiber dyeing 4h, other steps are identical with step (1) in embodiment 1 .

[0049] (2) Rotary cold pile: except that the rotating speed is 15r / min, the cold pile temperature is room temperature (20-25° C.), and the cold pile treatment time is 10 hours, other steps are the same as step (2) in Example 1.

[0050] (3) and (4) are all the same as steps (3) and (4) in Example 1.

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Abstract

The invention provides cold-pad batch dyeing process of loose fibers. The process comprises following steps: supersonic wave dyeing through pressing extraction, rotary cold-batch, water extraction through pressurization and aftertreatment. In the ultrasonic treatment, dyes are placed into an ultrasonic dyeing machine for increasing temperature. After supersonic waves are started, carboxylic carbon nanospheres and levelling agents are added and stirred for dyeing by putting loose fibers.Due to effect of acoustic cavitation of supersonic waves, loose fibers maintain their smaller particle with dispersibility not affected by temperature control. The manufacturing process is simple and helps save water and cost. Meanwhile, carboxylic carbon nanospheres and physical absorption and hydrogen bond combination performance of dyes as well as chemical effect of active groups of carboxylic carbon nanospheres, combination degree of dyes and loose fibers is increased and therefore dye rate is improved and up to more than 95%.

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): D06B13/00D06B17/02D06B15/00D06P5/20D06P1/00D06P1/673
Inventor 朱忠良
Owner 朱忠良
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