Continuous ultrafine fiber dyeing method and dyeing machine

Abstract

The invention discloses a continuous ultrafine fiber dyeing method and a dyeing machine. The continuous dyeing method mainly comprises the steps that the vacuum negative pressure state is achieved by means of extrusion of two rollers capable of adjusting pressure, sprayed dye is instantly sucked into an ultrafine fiber cloth, and therefore the ultrafine fiber cloth is dyed. The dyeing machine mainly comprises a dyeing machine frame. A cloth feeding mechanism, one or more sets of cloth dyeing devices, a preliminary drying device and a take-up cloth cropping mechanism are arranged on the dyeing machine frame. Each set of cloth dyeing devices is provided with two adjacently-arranged circular dyeing rollers, wherein each circular dyeing roller is installed in a roller support through rolling shafts at the two ends, and the two circular dyeing rollers in each set are arranged adjacently. A spraying pipe communicated with a dye cell is arranged above the two adjacently-arranged circular rollers in each set. The preliminary drying device through which the dyed ultrafine fiber cloth is allowed to pass is arranged above the cloth dyeing devices, and the take-up cropping mechanism is installed on the side edge, behind the preliminary drying device, of the dyeing machine frame.

Description

technical field [0001] The invention relates to a continuous dyeing method and a dyeing machine for superfine fibers, belonging to the technical field of fabric dyeing. Background technique [0002] Microfiber is composed of fiber and resin. The fineness of the fiber is only 0.0001-0.001 denier. The gaps between the fibers are filled with foamed resin. characteristic. Existing microfiber dyeing technologies all belong to the exhaust dyeing method. Exhaust dyeing is to immerse ultrafine fibers in dyes, and through dyeing vat circulation or ultrafiber movement, the ultrafine fibers are repeatedly dipped in the dyeing solution to make them constantly move relative to each other. The method of gradually dyeing microfiber with dye, such as figure 1 As shown; during the dip-dyeing process of microfiber cloth, the dye molecules are first on the outside of the microfiber cloth. After a long time of soaking, the dye molecules can penetrate into the interior of the microfiber cloth,...

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Problems solved by technology

[0003] Due to the high density and thicker thickness of superfine fibers, the prior art is to prolong the time of superfine fibers in the dyeing vat to achieve the purpose of uniform dyeing and core penetration, and use the exhaust dyeing method to dye superfine fibers. Due to the heavy weight of microfiber cloth, the bath ratio is large, which wastes dye and energy, increases the burden of wastewater treatment, and the ultrafine fiber needs to be manually operated in and out of the dyeing machine, which is labor-intensive and low in output.

[0004] Existing exhaust dyeing methods use intermittent cylinder-type dyeing equipment such as general jiggers, rope dyeing machines, overflow dyeing machines, etc. for superfine fiber dyeing. These dyeing equipment have complex structures, and the dyeing process consumes a lot of energy and labor intensity , low output, difficult color matching, large color difference between each cylinder, long dyeing time, and great damage to the physical properties of microfibers

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