31results about How to "Save water for dyeing" patented technology

The invention provides a reactive dye ecological dyeing method of silk fabrics, which comprises the following steps of: (1) even dyeing: using reactive dye and decamethyl cyclopenta siloxane (D5) according to the mass ratio of 1:10 to 50 to prepare a reactive dye/D5 suspending dispersed liquid; padding the silk fabrics in 30 to 90 g/l of sodium bicarbonate solution; and dyeing the silk fabrics in the reactive dye/D5 suspending dispersed liquid with the rolling liquid rate of 160 to 200% at room temperature for 25 to 35 minutes, wherein the rolling liquid rate is used for ensuring even dyeing of the silk fabrics; and (2) color fixing: heating a mixture system obtained from the step (1) to 40 to 50 DEG C, and keeping the temperature for 20 to 30 minutes; then heating to 70 to 90 DEG C, and keeping the temperature for 20 to 30 minutes; and taking the silk fabrics out, and performing soap boiling. In the process of dyeing provided by the invention, an electrolyte is not added for dyeing acceleration, the dyeing rate of the dye is close to 100%, the fixing rate is higher than that of traditional bath dyeing, and the fastness of the fabrics is good after dyeing. Because the electrolyte is not needed for dyeing acceleration, the burden of treating dyeing waste water is effectively reduced, and the ecological environment is protected.

The invention discloses a disperse dye thermosol dyeing method taking decamethylcyclopentasiloxane (D5) as a medium. The method comprises the following steps: (1) pretreating polyester fabric; (2) adding a certain amount of pure disperse dyes into a dyeing medium D5, controlling the amount of the dyeing medium D5, so that a ratio of the weight of a to-be-dyed fabric to the weight of the medium D5 is 1:10 to 1:30, dyeing in a dyeing machine, heating the system to 90-100 DEG C, preserving the temperature for 5-10 minutes, heating to the temperature of 180-200 DEG C, and performing thermosol fixation, wherein the fixation time is 10-30 minutes; and (3) performing reduction clearing on the dyed fabric according to a GB2394-80 method after dyeing. According to the method, non-aqueous medium dyeing is adopted, lots of water resources are saved, the thermosol temperature can be obtained under normal pressure, the conventional dyeing equipment can be adopted, the operation is simple, pure disperse dyes are adopted for dyeing, lots of dispersing aids are saved, the utilization rate of the dyes is improved, wastewater emission is reduced, and ecological environment protection is facilitated.

The invention relates to a waterless dyeing method of a disperse dyestuff for a textile and discloses a dyeing method of a disperse dyestuff with special methylsiloxane as a medium. The method comprises the following steps: (1) refining a terylene fabric; (2) adding a pure disperse dyestuff into a dyeing medium according to dyeing requirements, controlling the usage amount of the dyeing medium to allow a ratio (a bath ratio) of the weight of a to-be-dyed fabric to the total amount of the medium to be 1:5-20, carrying out insulation at a temperature of 60 DEG C for 20 min under stirring, adding the to-be-dyed fabric and a certain amount of water and carrying out dyeing in a dyeing machine; and (3) removing the unfixed dye on the surface of the fabric after dyeing: a step of drying the dyed fabric and carrying out reduction and cleaning according to a method prescribed in GB2394-80. According to the invention, the pure disperse dyestuff is used for dyeing of terylene; a good dyeing effect is obtained, cost is saved, and dyeing procedures and discharge of waste water are reduced.

The invention discloses a cellulosic fiber in-situ mineralization deep water-saving and emission reduction dyeing aftertreatment method which comprises the following steps: firstly, putting a fabric to be dyed into dyeing equipment, adding dyeing water into the dyeing equipment, and keeping circulation of a dye bath; performing dyeing processing on the fabric to be dyed by using a common deying method for the cellulosic fiber, and after dyeing is completed, retaining the residual dyeing liquid; further simultaneously performing in-situ mineralization treatment on the residual dyeing liquid obtained after cellulosic fiber dyeing processing and the dyed fabric by using cellulosic fiber aftertreatment additives XAC, XBC and XYC; storing the residual dyeing liquid obtained after the mineralization treatment as later dyeing water; dehydrating and drying the dyed fabric, thereby completing dyeing and aftertreatment on the fabric. The invention further discloses the cellulosic fiber dyeing aftertreatment additives XAC, XBC and XYC. By adopting the dyeing aftertreatment method disclosed by the invention, the water consumption problem and the wastewater discharge problem in the cellulosic fiber dyeing processing can be fundamentally solved.

The invention discloses a viscose color-gorgeous blended blocky gray plus material and a preparation method, and belongs to the technical field of textile manufacturing. A common viscose fiber and a modified color-quick-absorption viscose fiber (namely a color-gorgeous fiber) are blended into mixed yarn according to a certain proportion; afterwards, the mixed yarn is woven into the blocky gray plus material through a circular knitting machine. The blocky gray plus material is according to the principles that the color-gorgeous fiber can quickly absorb dye in a condition that dyeing auxiliariesof an alkali and a salt, and the like, are not added and dyeing liquor on the common viscose fiber needs to be removed through soaping, so as to form the blocky gray plus material; the principle is reasonable in design; the plus material is gorgeous in color, and is moisture-absorption and sweat-permeable; the process flow and the processing difficulty are greatly shortened and decreased; the useof the alkali and the salt is reduced, and the blocky gray plus material is more environmentally friendly.

The invention aims at providing a dyeing process of fire retardant fibers. The dyeing process comprises the following steps: step 1, desizing: adding the fire retardant fibers into a desizing eater solution at 50-60 DEG C, keeping the heat and washing with water; step 2, rinsing: adding the fire retardant fibers subjected to the desizing into a rising water solution at 95-100 DEG C, keeping the heat and washing with the water; step 3, dehairing: taking the rinsed fire retardant fibers and removing hairs on the surfaces of the fire retardant fibers; step 4, dyeing: taking the unhaired fire retardant fibers and adding the unhaired fire retardant fibers into water at 15-35 DEG C; gradually heating a water bath to 100-102 DEG C; adding dyestuff when the water bath is 68-71 DEG C and adding a dyestuff auxiliary agent when the water bath is 95-100 DEG C; keeping the heat at 100-102 DEG C for 0.5-1 hour; gradually heating the water bath to 130-135 DEG C and keeping the heat at 130-135 DEG C for 0.5-1 hour; gradually cooling the water bath to 75-80 DEG C; taking out the fire retardant fibers and soaping at 75-80 DEG C for 0.1-0.5 hour; and step 5, finishing: taking the dyed fire retardant fibers and sequentially carrying out air finishing and full decatizing finishing on the dyed fire retardant fibers. The dyeing process has the advantage that the dyeing effect is improved.

The invention discloses a polyester dyeing method. The method comprises the following steps of step one, utilizing a double twisting machine to perform double twisting and spooling processing to formyarn bobbins; step two, utilizing a yarn pressing machine to perform yarn pressing on the yarn bobbins, and pressing and fixing a plurality of yarn bobbins on a yarn loading column; step three, mounting the yarn loading column to which the yarn bobbins in a yarn loading frame, and placing the yarn loading frame into a dyeing cylinder for dyeing by using a lifting device; step four, after the dyeing is completed, taking out the yarn loading frame from the dyeing cylinder by using the lifting device, and dehydrating the yarn bobbins. The polyester dyeing method fixes a plurality of yarn bobbinson the yarn loading column through pressing, the yarn loading column is installed in the yarn load frame for centralized dyeing, the yarn bobbins are evenly distributed, more yarns are stored per volume, thereby saving the amount of dyeing water and saving energy, and the yarn pressing machine is used for improving the degree of automation and mechanization of the dyeing, thereby greatly improvingthe production efficiency.

The invention discloses a method for polyamide fiber in-situ mineralization deep water-saving and emission-reducing dyeing after-treatment. The method comprises the following steps: putting a to-be-dyed textile into dyeing equipment, adding dyeing water, and keeping dye-bath cycling to perform preparation before dyeing; performing dyeing processing on the to-be-dyed textile according to a general dyeing method of polyamide fibers; synchronously performing in-situ mineralization treatment on a dyeing residual bath and the dyed textile by using polyamide fiber dyeing after-treatment auxiliary agents XAJ, XBJ and XYJ; storing the dyeing residual bath subjected to the mineralization treatment to serve as water for subsequent dyeing; and dehydrating and drying the dyed textile to finish the whole dyeing after-treatment processing. The invention also discloses the polyamide fiber dyeing after-treatment auxiliary agents XAJ, XBJ and XYJ. By adopting the method for the polyamide fiber in-situ mineralization deep water-saving and emission-reducing dyeing after-treatment, the problems of water consumption and wastewater discharge during dyeing processing of the polyamide fibers are fundamentally solved.

The invention discloses a preparation method and dyeing method of disperse dyestuff less-water dyeing color paste. According to the preparation method, disperse dyestuff is dissolved in an organic solvent, then a dispersing agent and an emulsifying agent are utilized to obtain the stable disperse dyestuff less-water dyeing color paste under an ultrasonic agitation condition. In the ultrasonic agitation process, the disperse dyestuff dissolved in the organic solvent is uniformly dispersed in an aqueous solution in the form of particles to form stable dispersion liquid, and meanwhile a long-timegrinding process in a traditional color paste preparation process is omitted. Through the method, less-water dyeing of a polyester fabric through the disperse dyestuff is realized, the cost of waterfor dyeing is lowered, and all fastness of the dyed fabric is consistent with that of conventional disperse dyestuff hot-melting dyeing.

The invention discloses an in-situ mineralization and water-saving emission-reduction dyeing post-treatment method for polyacrylonitrile fibers. The method comprises the following steps: putting a to-be-dyed textile into dyeing equipment, adding dyeing water, keeping dye bath recycling, and making preparations before dyeing; performing dyeing processing on the to-be-dyed textile with a general polyacrylonitrile fiber dyeing method, and not discharging dyeing residual liquid after finishing dyeing; performing mineralization treatment on the dyed textile by utilizing polyacrylonitrile fiber dyeing post-treatment auxiliary agents XAQ, XBQ and XYQ; performing treatment on the obtained residual dyeing bath and the dyed textile, and finishing the whole dyeing post-treatment process. The invention further relates to respective formulae and preparation methods of the polyacrylonitrile fiber dyeing post-treatment auxiliary agents XAQ, XBQ and XYQ. The in-situ mineralization and deep water-saving emission-reduction dyeing post-treatment method for the polyacrylonitrile fibers and the auxiliary agents solve problems of high water consumption and high wastewater discharge amount in a polyacrylonitrile fiber dyeing processing process.

The invention provides an environment-friendly dyeing process of regenerated nylon yarns. The environment-friendly dyeing process comprises the following steps: treating cheese yarns through a padding type yarn treating machine, and specifically comprises the following steps: loading a shaft, padding a working solution, oxidizing and curing, washing with water, drying and unloading a bobbin from the shaft.