48results about How to "Increased dyeing rate" patented technology

The invention provides a leather dyeing machine, and belongs to the technical field of leather dyeing equipment and the leather dyeing machine can be used for solving the technical problem in the prior art that the leather dyeing machine has low dyeing efficiency. The leather dyeing machine comprises a base, wherein the base is provided with a drum body, the drum body is internally provided with an inner cavity, a rotary shaft I and a rotary shaft II are respectively fixed at two ends of the drum body, a drive device is arranged between the base and the outer end of the rotary shaft I, the rotary shaft II is pivoted on the base, a rotary joint II is arranged outside the rotary shaft II, a power-driven three-way valve is connected outside the rotary joint II, the power-driven three-way valve comprises an outlet I, an outlet II and an inlet, the inlet is communicated with the outer side of the rotary joint II, a vacuum pump is also fixed on the base, and the vacuum pump is communicated with the outlet I through a gas guide tube. Through vacuum pretreatment on the leather in the inner cavity of the drum body, the dyeing efficiency of the leather dyeing machine is improved.

The invention relates to a brocade cotton fabric short-process dyeing method, and belongs to the technical field of printing and dyeing in the textile manufacturing industry. The method includes subjecting brocade cotton fabric to pretreatment to remove oil stain and impurities and to improve handfeel and gloss; adding an active dye into an air flow cylinder to prepare into a dyeing solution; dyeing by adoption of a one-bath two-step method that includes acid dyeing and alkaline fixation; and after the dyeing step is finished, washing, soaping and airing to obtain a finished product. The method has advantages of uniform dyeing, good homochromatism, and the like when being used for air flow cylinder dyeing of the brocade cotton fabric such as brocade cotton intertexture.

The invention discloses a method for dyeing polylactic acid fiber fabrics with disperse dye under low temperature, which belongs to the technical field of dyeing. The method includes the following steps that: after water is added according to the weight of a polylactic acid fiber fabric and the bath ratio of 10 to 20:1, the melted disperse dye, 1g/l to 2g/l of dispersing agent and 1g/l of ammonium sulphate are sequentially added, the fabric is put in and starts to be wetted, 10ml/l of special additive is then added after 5 minutes, the temperature is increased to 90 DEG C at 1 DEG C to 2 DEG C/min, and is kept for 40 to 50 minutes, the temperature is then increased to 80 DEG C at 3 DEG C/min, and the fabric is heated to 90 DEG C after the water is drained, and is soaped for 10 minutes under the bath ratio of 1:10 to 20. While achieving a good dyeing effect, the invention can reduce the loss of the physical and mechanical properties of polylactic acid fibers to the max.

The invention discloses a method suitable for union dyeing of a raw silk/Eco-wash wool interwoven fabric. The method comprises the steps of pretreatment, dyeing and soaping. The dyeing step is performed through adding a reactive dye and a leveling agent O according to a dyeing formula in order to prepare a dyeing solution, adding citric acid to adjust the pH value of the dyeing solution, heating the dyeing solution, adding the fabric when the temperature rises to 30 DEG C, and dyeing the fabric for a certain time while rising the temperature to a heat insulation temperature at a certain heating rate. The method effectively solves the technical difficulties of low color fastness and poor homochromatism of the raw silk/wool interwoven fabric and sericin dissolving loss of a raw silk component in the dyeing process, overcomes the shortcoming of low one-bath dyeing fastness of acidic dyes, and overcomes the shortcomings of poor alkali-bath dyeing homochromatism and large sericin dissolvingrate of reactive dyes. The method has the advantages of simple and convenient process, good homochromatism, high color fastness and wide application values.

The invention discloses a mercerized-wool and cotton blended fabric dyeing method using a pomegranate bark plant dye. The mercerized-wool and cotton blended fabric dyeing method includes the followingsteps that 1, 1-3% by weight of sodium bicarbonate and 0.5-5% by weight of wetting agent are added into deionized water and then are uniformly stirred and mixed, mercerized-wool and cotton blended fabric is placed into a mixed solution to be heated to 50-70 DEG C to be processed for 20-30 min, and the bath ratio is 1:(20-30); 2, the pomegranate bark plant dye, dye mordant and a wetting agent areadded into deionized water and then are uniformly mixed and stirred to prepare a dye solution, the mercerized-wool and cotton blended fabric is placed into the dye solution, heating starts at 30-35 DEG C, the heating rate is kept at 2-3 DEG C/min, and the temperature is kept at 50-60 DEG C to carry out processing for 60-80 min, wherein the dye solution is acidic, the bath ratio is 1:(20-30), and the dye mordant is neodymium chloride and/or aluminum potassium sulfate dodecahydrate. By the adoption of the mercerized-wool and cotton blended fabric dyeing method using the pomegranate bark plant dye, neodymium chloride and/or aluminum potassium sulfate dodecahydrate is adopted as the dye mordant, the weakly acidic dyeing solution has little damage on mercerized wool during dyeing, and the dyeing rate and the color fastness are high.

The invention discloses a high-brightness fluorescence bright-red formula for textiles. The high-brightness fluorescence bright-red formula comprises the following dyeing raw materials in parts by weight: 200-300 parts of disperse red FRL, 250-350 parts of disperse bright-red 3B, 150-250 parts of disperse tender yellow 4G and 15-25 parts of emulsion paste. By adopting the mode, the high-brightness fluorescence bright-red formula for textiles and a dyeing method of the high-brightness fluorescence bright-red on the textiles can solve the problems that the quality of a textile is not stable, dark and gloomy in color and low in efficiency and benefit during production, the dyeing velocity is increased by adopting an instantaneous ultrahigh-temperature pre-baking heating mode, the dyeing rate is increased, the dewing is uniform in a high-temperature atomization mode, the brightness of color is improved, the textile has the high-brightness fluorescence bright-red color effect by adopting an instantaneous high-temperature polishing brightening mode, the working efficiency is improved, the production cost is lowered, and the benefits are increased.

The invention discloses a dyeing device for textile. The dyeing device comprises a dyeing box, wherein stand columns are correspondingly arranged at four corners of the outer wall of the top of the dyeing box; a top plate is welded to the outer walls of the tops of the stand columns; two fixing bases are correspondingly arranged at the positions, close to two sides, of the outer wall of the bottomof the top plate; a motor is connected to the outer wall of one side of the fixing base through bolts; a winding roller is arranged at one end of an output shaft of the motor; cross rods are equidistantly distributed on the inner wall of the dyeing box in a staggered mode; cloth guide rollers are rotationally connected to the outer walls of the cross rods; a water pump is connected to the outer wall of the bottom of the dyeing box through bolts; a water pumping pipe is connected to the outer wall of one side of the water pump through bolts; and one end of the water pumping pipe communicates with the dyeing box. According to the dyeing device, the staying time of cloth in the dyeing box can be effectively prolonged, so that the cloth dyeing efficiency is improved, the using effect is better; and dye can be immersed into the cloth more quickly, so that the dyeing rate of the device is further improved.

The invention discloses a nylon 6 fishing net dyeing process. The nylon 6 fishing net dyeing process comprises the following steps: (1) preprocessing, (2) dyeing and (3) color fixing. The problems of uneven dyeing, flower dyeing, aberration and color defect which are easily caused in dyeing of nylon 6 fishing nets can be solved. The utilization rate of dyestuff and the color fastness are improved, dyeing processing risks are reduced, the semi-dyeing time of the dyestuff can be greatly reduced, the dyeing speed is increased, a certain amount of cactus extracting solution is added during dyeing, a dye liquor treatment environment is gentle, damage to the nylon 6 fishing net is small, the use performance of the nylon 6 fishing net is not affected, and meanwhile, the dyeing speed is not reduced.

The invention discloses a pure-cotton double-layer jacquard home textile dyeing and finishing method, and belongs to the technical field of pure-cotton fabric dyeing. The method is characterized by comprising the following preparation steps: with a dyeing liquid formula, namely an active dye with two active groups of ethylene sulfuryl and hydroxyl ethylene sulfone sulfate in a main liquid, putting20-50% in percentage by mass of a dye liquid into a dyeing tank, and performing dyeing once; adding the rest dyeing liquid, and performing dyeing once again; adding sodium sulfate, and performing dyeing once; adding alkali powder, and performing dyeing once; adding a soaping agent SN-45, increasing the temperature, and performing dyeing for three times; washing with cold water, adding a neutralization acid, and performing dyeing for three times; performing acid pickling, and discharging a fabric roll. The inventor improves a cotton double-layer jacquard fabric dyeing process, and together with the selected active dye with two active groups of ethylene sulfuryl and hydroxyl ethylene sulfone sulfate in the main liquid, factors such as the soaping fastness, the lifting power of the dye, thedyeing velocity and the curve of the dye, the matching property of the dye, and the like are improved.

The invention discloses a laser dyeing process of denim fabric, which is characterized in that excess liquid is removed after extrusion through a mercerizing tank containing caustic soda, and then thesolution is absorbed into fibers in time through a series of cold metal drying cylinders and stretching under certain tension. The caustic soda absorbed by cotton causes substantial acidic dissociation of hydroxyl groups. The concentration of the inner ion part of the cotton fibers is higher than that of the outer ion part. As water is absorbed by permeation and the fibers swells, considerable pressure builds up within the fibers, causing loss of natural crimping property. After the caustic soda is washed off, no shrinkage occurs and the fibers have a rounder cross-section and consequently ahigher gloss. Mercerized cotton can absorb more dye and present higher dyeing rate. The sectional area of the fibers obtained by the process is increased and is rounder, and the gloss is enhanced; thedye absorption is reduced, and the dye consumption is decreased by 30-50%; the shrinkage rate is reduced, and the dimensional stability is improved; the problem of pollution in the denim dyeing process can be effectively solved.

The invention discloses a wax printing dye and a wax printing method. A substance containing a bis(monochlorotriazine) active group or monochlorodiazine active group is used as a colorant, mixed wax liquid is adopted, dyeing color fastness is changed, and tea polyphenols are added into the dye in order to improve the light aging resistance of dyeing colors. A fabric is smoothened and pretreated inthe dyeing process, a substance base is provided for natural and fine wax stripes in a follow-up wax printing process, the pretreated fabric is placed into the dye and dyed under the action of ultrasound, movement of dye molecules is facilitated by the action of ultrasound, dyeing is accelerated, and dyeing color fastness and uniformity are improved.

The invention discloses a dyeing and finishing processing method of a semi-elastic Huayao imitation memory fabric, and relates to the technical field of textile printing and dyeing, the method comprises the following steps: (1) flat-width desizing; (2) flat-cylinder refining; (3) dyeing; (4) pre-shrinking; and (5) forming, namely a fabric is subjected to soft forming through a forming machine, a softening agent TF-0404 A and a shaping auxiliary agent are added into the shaping machine, the mass ratio of the fabric to the softening agent TF-0404 A to the shaping auxiliary agent is 20: 1: 1, theforming temperature is 165-185 DEG C, the forming time is 30-50 seconds, and the width of the shaping machine is 153-155 cm; wherein the shaping agent comprises the following substances in parts by weight: 3-8 parts of dihydroxymethyl dihydroxy ethylene urea resin, 4-8 parts of polyurethane modified organic silicon, 3-6 parts of a strong fiber protective agent LH -034, 2-5 parts of a cationic amino silicone elastic fabric finishing agent and 3-6 parts of melamine formaldehyde resin. According to the method, the problems that the dyeing shape memory function and the shape recovery capability of the semi-elastic Huayao fabric are not high are solved. By means of the shaping auxiliary agent, the shape memory function and the shape recovery capability of the semi-elastic Huayao fabric can beimproved.

The invention provides a printing process, which comprises preparation of anhydrous reactive dye printing paste, printing, drying and aftertreatment. The preparation of the anhydrous reactive dye printing paste comprises the following steps: S1, taking a predetermined amount of dimethylformamide (DMF) and adding a predetermined amount of polyurethane into the dimethylformamide; and S2, taking a predetermined amount of polyurethane solution prepared in the step S1, adding a predetermined amount of reactive dye and a predetermined amount of halogenated hydrocarbon into the polyurethane solutionand continuously stirring for 10 to 30 minutes to obtain the anhydrous reactive dye printing paste. The anhydrous reactive dye printing paste consists of the following components in percentage by weight: 35 to 47.5 percent of dimethylformamide, 2.5 to 15 percent of polyurethane, 0.5 to 1.5 percent of reactive dye and 37.5 to 62.5 percent of halogenated hydrocarbon. Thus, in a paste system of halogenated hydrocarbon/DMF/polyurethane, reactive dye molecules are rapidly pushed and attracted to fiber and then are adsorbed by the fiber at once, and the obtained printing textile product has clear boundary and has high color fastness; and the anhydrous reactive dye printing paste has simple components and is simple in preparation process.

The invention relates to a yarn dyeing process and high-dyeing-property yarn, and relates to the field of textile fabric dyeing, the yarn dyeing process comprises the following steps: S1, pretreatment: boiling off the yarn, washing with water and drying after boiling off, and then carrying out low-temperature plasma treatment on the yarn; s2, dyeing: immersing the yarns subjected to low-temperature plasma treatment into dye liquor, controlling the bath ratio to be 1: (2-8), and dyeing the yarns at the temperature of 35-120 DEG C; and S3, fixation: carrying out steam fixation treatment on the dyed yarns, and washing and drying the yarns after the fixation treatment is completed, so as to complete the yarn dyeing process. According to the technical scheme provided by the invention, the yarn dyeing quality and efficiency can be effectively improved, and the dyed yarn has higher color fastness and better quality.