A cold-batch dyeing process of loose fiber by pouring
A loose fiber, shower rolling technology, applied in the direction of liquid/gas/vapor removal with squeezing rollers, spraying/jetting textile material processing, processing textile material carriers, etc., can solve the problem of long dyeing cycle, high energy consumption, dyeing Poor uniformity and other problems, to achieve the effect of accelerating diffusion and uniform distribution
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Embodiment 1
[0031] In this embodiment, the cold-batch dyeing process of rolling-type loose fibers is combined with figure 1 , including the three steps of pouring dyeing→rolling→stacking and color fixing. Specifically,
[0032] (1) Pad-type dyeing: Cotton box 1 transports loose fibers to the pad-type dyeing device in the form of a cotton blanket, and the guide belt is horizontally conveyed and squeezed-sprayed-squeezed-sprayed-squeezed-sprayed Spray-extrusion-spray-extrusion-spray, during the extrusion process, the extrusion force on the loose fiber is 3-15kg / cm 2 , During the spraying process, the spraying amount of the dyeing liquid is 1.5-2 times of the bulk fiber conveying amount.
[0033] which, combined with figure 2 , the padding type dyeing device includes a conveying part and a spraying part, the conveying part includes a pair of upper driving rollers 3 and a pair of lower driving rollers 4, the upper driving rollers 3 and the lower driving rollers 4 are respectively sleeved w...
Embodiment 2
[0039] In this example, the cold-batch dyeing process for bulk fibers of the pouring pad type includes not only the padding padding dyeing, coiling and stacking color fixation, but also the simultaneous dye circulation process. The guide belt is horizontally conveyed, extrusion-spray-extrusion-spray-extrusion-spray-extrusion-spray-extrusion-spray, and the dye circulation process is synchronized with the padding type dyeing. , the dye circulation process is realized by being arranged on the circulation parts below the lower conduction belt 6, and the circulation parts include a sump 12, a return pipe 11, a replenishment pump 16 and a heat exchanger 17, and the return pipe 11 can be provided with a return pipe as required One 11a, return pipe two 11b, return pipe three 11c, return pipe four 11d and return pipe five 11e, return pipe one 11a, return pipe two 11b, return pipe three 11c, return pipe four 11d and return pipe five 11e one end and collector The liquid tank 12 is connec...
Embodiment 3
[0041] Example 3: Conventional Loose Fiber Dyeing
[0042] Dyeing vats are used to dye loose fibers. The dyeing process and process conditions are as follows:
[0043] (1) Pre-treatment: pre-treat the loose fibers under high-temperature alkaline conditions, so that the cotton has better water absorption, which is conducive to the adsorption and diffusion of dyes during dyeing.
[0044] (2) Bleaching and brightening: The pretreated loose fibers are subjected to oxygen bleaching treatment, in which alkali agents and hydrogen peroxide stabilizers need to be added to the oxygen bleaching, and pickling is carried out.
[0045] (3) Dyeing: add dyes and auxiliaries to the bathtub, among which, auxiliaries, salt, sodium sulfate, etc. are needed in the dye, the bath ratio is 1: (10-20), the loose fiber after bleaching and whitening Placed in the dyeing vat, the dyeing solution is transported by the main pump, from the inner layer of the dyeing vat to the outer layer to penetrate and c...
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