63results about How to "Improve dyeing uniformity" patented technology

The invention relates to the technical field of yarn dyeing, and discloses a cone yarn uniform dyeing device and a cone yarn dyeing technology.The cone yarn uniform dyeing device comprises a dyeing vat, a supporting ring base is fixedly connected to the inner wall of the dyeing vat, a bobbin creel is placed on the top of the supporting ring base, a middle shaft is fixedly connected to the center of the top of a box base, and a motor is arranged on the top of a top cover; an output shaft of the motor penetrates through the top cover and is combined and connected with the middle shaft, and the motor runs to realize integral rotation of the bobbin creel under the connection effect of the middle shaft to drive cone yarns on the side walls of the bobbins to revolve to improve the contact uniformity of dye liquor and the surfaces of the cone yarns; according to the invention, the plurality of vertical cylinders can drive cone yarns on the plurality of bobbins to perform synchronous revolution and autorotation, revolution (namely rotation around the center of the dyeing cylinder) is beneficial to uniform distribution of dye liquor on the surfaces of the cone yarns, and dyeing chromatic aberration caused by non-uniform distribution of the dye liquor is reduced; centrifugal force generated by autorotation (namely rotation of the axis of the cone yarn) helps dye liquor more deeply permeate into the yarn, so that the device can greatly improve the dyeing uniformity of the cone yarn.

The utility model relates to the field of knitted fabric processing, in particular to a knitted fabric dyeing device which comprises a mixing barrel, a stirring barrel, a stirring assembly, a conveying roller and an aeration pipe, the stirring barrel is arranged on the left side of the mixing barrel, the bottom of the stirring barrel is communicated with the bottom of the mixing barrel, the stirring assembly is arranged on the stirring barrel, and the conveying roller is arranged on the stirring assembly. A filter screen is arranged in the stirring barrel, the upper end of the stirring barrel is connected with the upper end of the mixing barrel through a guide pipe, the lower end of the guide pipe is located above the filter screen, a water pump is arranged on the guide pipe, a plurality of groups of conveying rollers are alternately arranged left and right and vertically at intervals, air channels are formed in the conveying rollers, and air inlet pipes are arranged at the ends of the air channels. The aeration pipes are connected to one side of the conveying roller at intervals and communicate with the cavity channel, and a plurality of air outlet holes are annularly formed in the aeration pipes in an array mode, so that the mixing uniformity of the dye is improved, and the dyeing efficiency of the knitted fabric is improved.

The utility model discloses an environment-friendly polyester fabric disperse dyeing device and belongs to the technical field of textile dyeing equipment. Comprising a dyeing tank, a dyeing assembly is arranged in the dyeing tank, cloth guide rollers are symmetrically arranged at the two ends of the top in the dyeing tank, a backflow opening is formed in the side wall of one end of the dyeing tank, and a collecting tank is fixed to the position, located at the backflow opening, of the side wall of the dyeing tank and communicated with the dyeing tank through the backflow opening; the dyeing device comprises a dyeing assembly and a dyeing groove, a motor connected with the dyeing assembly is arranged on one side of the dyeing groove, the dyeing assembly comprises a roller, a stirring rod and an extrusion part, and the extrusion part comprises an auxiliary roller, an extrusion roller, a mounting frame, a limiting rod and a spring. Dye precipitation is avoided, meanwhile, the dye can make full contact with the fabric, the fabric can absorb the dye conveniently, and therefore the purpose of improving the dyeing effect is achieved.

The utility model discloses a high-temperature gas-liquid dyeing machine which comprises a cylinder body which comprises a fixed cylinder body and an adjusting cylinder body, and the adjusting cylinder body is connected inside the fixed cylinder body in a sliding mode. The traction distance adjusting mechanism is arranged at the top of the fixed cylinder body, the traction distance adjusting mechanism comprises an adjusting frame fixedly connected to the top of the fixed cylinder body, and a lead screw used for driving the adjusting cylinder body to move is rotationally arranged in the middle of the adjusting frame; the textile processing machine has the beneficial effects that the machine can process textiles with different sizes and types through the adjustable cylinder body space, so that the use efficiency and the application range of the equipment are improved; the space of the cylinder body is adjusted to adapt to the textile quantity required by actual dyeing, so that the use of water, energy and dye required in the dyeing process can be reduced, the cost is reduced, and the environmental influence is reduced; the adjusting structure can optimize fluid dynamic conditions in the dyeing process according to specific requirements of textiles, so that the dyeing uniformity and the dyeing effect are improved.

The invention discloses a steam-type dyeing device for processing cotton yarn, comprising a dyeing box, a conductor roller, a steam pipe and a suction pipe. The invention uses a suction pump to extract high-temperature steam generated by heating dye liquid in the dyeing box and spray it out through an upper outlet and a lower outlet. A suction pump 2 extracts the dye liquid in the dyeing box through the suction pipe and drives the dye liquid through a spray hole through an atomizing nozzle to form a mist, which is sprayed into a steam conveying pipe. At this time, the high-temperature steam carries the atomized dye liquid particles for transportation. The high-temperature steam carrying the dye liquid particles sprayed out of the lower outlet is directly blown toward the cotton yarn under the action of an air guide plate, and the high-temperature and high-pressure steam is used to accelerate the penetration and diffusion of dye liquid molecules into fabric fibers. The high-temperature steam carrying the dye liquid particles sprayed out of the upper outlet will be blown toward the dyed cotton yarn along the air guide plate for fumigation. The steam passes through the cotton yarn to promote the migration of dye liquid molecules from the fiber surface to the inside, and the cotton yarn is subjected to color fixation treatment, thereby improving the uniformity and consistency of dyeing.

The application discloses a two-component nylon elastic yarn and a manufacturing process thereof, and relates to the technical field of textiles.The two-component nylon elastic yarn comprises an elastic yarn body which is composed of a yarn core and an outer surface layer arc ring part; the yarn core is a nylon polymer fiber; the outer surface layer arc ring part is an outer nylon fiber; and the elastic yarn body is obtained by blowing ATY yarn according to a blowing ratio of 1:0.8-2.8 between the nylon polymer fiber and the outer nylon fiber.The elastic yarn body is obtained by condensation of modified hexanediamine as monomer one and modified heptanedioic acid as monomer two, so that the stability of the elastic yarn body is increased, the dyeing temperature of the elastic yarn body is increased due to the π bond effect, the dyeing uniformity and elasticity are effectively improved, and the effect of high-temperature setting is suitable.

The invention discloses an ultra-low bath ratio polyester cheese dyeing method. The method comprises the following steps: cleaning polyester yarns; introducing the dye solution into a dyeing machine, and adding a penetrating agent, a leveling agent and a dispersing protective agent to prepare a dyeing solution with the pH value of 4-5; winding the cleaned polyester yarns into cheese, putting the cheese into a dyeing solution according to a bath ratio of 1: (2.5-3), and carrying out high-temperature dyeing at 85-130 DEG C; the dispersion protective agent is prepared from the following reaction monomer raw materials through free radical copolymerization in parts by mass: 10-15 parts of unsaturated carboxylic acid monomer; 12 to 16 parts of alkyl methacrylate; 4-6 parts of styrene; and 4-8 parts of a monomer containing a siloxane group. The polyester yarn with excellent dye uptake, color fastness and leveling property can be obtained under the conditions of ultralow bath ratio and high-temperature dyeing.

The invention relates to the technical field of textile dyeing, and particularly discloses an energy-saving dip dyeing method for knitted fabric. An energy-saving dip dyeing method for a knitted fabric comprises the following steps: pretreatment: immersing the knitted fabric in a pretreatment solution, soaking at 30-50 DEG C, and then washing to obtain a pretreated knitted fabric; wherein the raw materials of the pretreatment liquid comprise the following components in parts by weight: 90-110 parts of deionized water, 1-5 parts of a surfactant, 0.5-2 parts of an electrolyte, 0.5-3 parts of a solubilizer and 0.5-2 parts of a softening agent; dyeing: putting the pretreated knitted fabric into a dye solution, soaking at 20-30 DEG C, taking out, washing with water, and carrying out heat setting to obtain a dyed knitted fabric; wherein dye in the dye liquid is prepared from the following components in parts by weight: 20 to 30 parts of reactive dye, 10 to 20 parts of penetrant, 5 to 15 parts of regulator, 10 to 20 parts of reserve salt and 0.1 to 1 part of buffering agent.

The present application belongs to the field of textile printing and dyeing technology, and particularly relates to a polyester fabric continuous pad dyeing device and pad dyeing process, which comprises a pad dyeing frame; a feeding roller is arranged on one side of the top of the pad dyeing frame, and a tension roller is arranged below the feeding roller; through the design of a mixed turbulent flow component, the dye is delivered to the inner and outer rotating rods by a circulating pump to realize dye circulation; the fabric advances to drive the guide wheel to rotate, drives the first driving wheel and the first driven wheel, and makes the inner rotating rod rotate reversely; the spiral plate agitates the dye; at the same time, the motor drives the third driving wheel to drive the axial stirring rod to stir the dyeing liquid in the same direction; the outer rotating rod uniformly sprays the dye; the design of the staggered arrangement of the spiral plates, the liquid outlet holes and the diffusion holes further enhances the mixing effect; multiple components cooperate to stir the dye from multiple directions, avoids stratified precipitation, ensures uniform dye concentration, greatly improves the mixing efficiency compared with the traditional method, effectively solves the dyeing color difference problem, and significantly improves the dyeing uniformity and product quality.

The invention belongs to the technical field of layered products, particularly relates to a polyester crease-resistant comfortable fabric and a processing technology, and aims to solve the problems that a traditional polyester fabric is crease-resistant, but still has slight creases after being worn or washed for a long time, the attractiveness is influenced, the existing manual feeding efficiency is not high, and a dye mixing process needs to depend on additional instruments and is transferred. According to the scheme, the dyeing device comprises a dyeing box, the two ends of the dyeing box are provided with a discharging port and a feeding port which are used for fabric feeding and discharging correspondingly, and two first guide rollers used for guiding fabric are rotationally arranged in the dyeing box; the two second guide rollers are arranged in the dyeing box in a lifting mode, the height of the second guide rollers is adjusted through an electric push rod, the distance between the fabric and the spray head assembly can be accurately controlled, it is ensured that dye can be evenly sprayed on the fabric, the front face and the back face of the fabric can be sprayed at the same time, the dyeing efficiency and uniformity are improved, and the dyeing efficiency is improved. And the fabric can be conveniently inserted between the two groups of guide rollers.

The invention relates to the technical field of textile fabric coloring, and discloses a textile fabric coloring device for textile processing, which comprises a main body, the bottom of the main body is fixedly connected with a support frame, and the top of the support frame is fixedly connected with two rollers. When the C-shaped frame slides through the protruding block, the piston plate moves downwards, air in the air bag strip periodically enters to expand the air bag strip, the expanded air bag strip abuts against the surface of the fabric, and due to the fact that the air bag strip is soft after being filled with the air, when the fabric is dyed and penetrates through the outer surface of the air bag strip, the air bag strip is not prone to falling off when the fabric penetrates through the outer surface of the air bag strip. The air bag strips subjected to periodic expansion can control the tension of the fabric in the dyeing process, the situation that the tension of the traction fabric in the dyeing process is too large or too small is reduced, and the situations that tensile deformation occurs due to the too large tension of the fabric and floating occurs due to the too small tension of the fabric are reduced.

The invention discloses a dyeing processing technology and method for an air spinning technology material. The dyeing processing technology comprises the steps that an air spinning textile is divided into size fabrics, fibers are pre-cleaned, and an alkaline cleaning agent is used for pretreatment; putting the pretreated fibers into a dyeing machine, and adding a dye and an auxiliary agent; adjusting process parameters of the dyeing machine, and performing dyeing operation according to the process flow of the dyeing machine; after dyeing is completed, the fibers are taken out of the dyeing machine and subjected to cleaning and neutralizing treatment, and the dyed fibers are dewatered and dried. According to the invention, the uniform distribution of the dye in the fiber can be ensured, the common chromatic aberration and spot problems in the traditional dyeing are eliminated, and the dyeing uniformity is improved.

The utility model relates to cloth dyeing technical field, and specifically is a dyeing drying integrated device, including dye vat, the rotatory connection of dye vat bottom has the pivot, the upper end fixed mounting of pivot has the basket, filter component sets up at one side of dye vat, filter component includes water tank, water tank outside surface fixed communication has the water inlet pipe, one end of water inlet pipe fixed communication has no. In the utility model, the cloth is rotated by the basket, the penetration speed of the dye is accelerated, the dye is filtered after dyeing, the lint in the dye is reduced, the basket is rapidly rotated, the dye is re-injected from the center of the cloth, the dye penetrates the cloth again under the action of centrifugal force, the dyeing uniformity of the cloth is improved, the dye in the cloth is rapidly discharged, hot air is passed in to dry the cloth, thereby the cloth can be directly dried after dyeing.

The utility model discloses a kind of dyeing devices for sewing thread production, including supporting leg, the supporting leg is fixedly connected with dyeing kettle, the dyeing kettle is equipped with top cover, the bottom of the dyeing kettle is fixedly connected with discharge pipe, the upper portion of the dyeing kettle is fixedly connected with feed pipe, the top cover is rotatably connected with spline sleeve, the spline sleeve is spline-connected with connecting rod, the lower end of the connecting rod is fixedly connected with support plate, the support plate is rotatably connected with the column that is distributed in equidistance in circumference, the downside of the spline sleeve is fixedly connected with pressing plate, the connecting rod passes through the pressing plate. By motor drive spline sleeve, connecting rod and support plate, drive the column with wire roller circumferential revolution in dyeing solution. Meanwhile, under the cooperation of limiting block and rotating disc, roller design makes column can revolve around its own axis. This compound motion makes wire roller inner and outer layer sewing thread sufficient, dynamic contact dye, greatly improve the problem of traditional static soaking penetration uneven, significantly improve dyeing uniformity and dip dye efficiency.

The utility model discloses a liquid flow dyeing device for dyeing processing, which comprises a dyeing barrel, a dye pool and a circulating pump, and further comprises a built-in liquid discharge cylinder and a liquid discharge hole, the dye pool is arranged on one side of the dyeing barrel, an electric heater is arranged on the top of the dye pool, the heating end of the electric heater is arranged in the dye pool, and the circulating pump is arranged in the liquid discharge cylinder. A built-in liquid drainage barrel is arranged at the circle center in the dyeing barrel, the bottom of the built-in liquid drainage barrel penetrates through the bottom of the dyeing barrel to be connected with a liquid inlet connector in a welded mode, the bottom of the built-in liquid drainage barrel penetrates through the dyeing barrel to be connected in a welded mode, and liquid drainage holes are formed in the periphery of the built-in liquid drainage barrel at equal intervals; textile yarn rolls needing to be dyed are stored in the dyeing barrel. A set of dyeing mechanism with liquid flowing circularly is provided for a textile yarn roll, textile yarn is fully soaked by the dyeing liquid by means of circulation of pumping hydraulic pressure, the dyeing efficiency is also improved, and the dyeing uniformity is greatly improved.

The utility model provides a uniform dyeing device for carpet production, which relates to the technical field of carpet production and comprises a box body, a soaking cavity is arranged at the lower end inside the box body, a spraying cavity and an extrusion cavity are respectively arranged on two sides inside the box body, and the spraying cavity is connected with the extrusion cavity and the soaking cavity. And auxiliary mechanisms are mounted in the spraying cavity, the extrusion cavity and the soaking cavity. Raw materials move in the box body through the conveying rollers, the raw materials are subjected to three procedures of spraying, dip dyeing and extruding, the dyeing uniformity of the raw materials is improved to the maximum extent, meanwhile, through the spraying cavity and the extruding cavity, dye during spraying and extruding is isolated and guided, the dye can return to the interior of the soaking cavity again, and the dyeing uniformity of the raw materials is improved. The waste of the dye is reduced, the overall production cost is reduced, meanwhile, the situation that the dye is sputtered to the outside to cause pollution is avoided, and the method is simpler and more convenient.

The invention discloses a textile ultrasonic low liquid-carrying rate roller, comprising a first box body and a dust-absorbing and softening device. The invention realizes efficient spreading and ultrasonic dyeing of textile fabrics by arranging a first flattening roller, a water tank, an ultrasonic device, a guide roller, a second flattening roller, a third flattening roller, a first roller and a second roller, so as to realize uniform dyeing of the fabrics. The first roller and the second roller can realize intermediate force due to their internal hollow structures, so as to reduce the liquid-carrying rate of the fabrics. The dust-absorbing and softening device is arranged, that is, under the transmission of the first toothed disc and the second toothed disc, the convex plate arranged on the outside of the rotating roller can cooperate with the receiving roller to realize intermittent transmission of the fabric, so as to prolong the subsequent dyeing time of the fabric. The dust-absorbing structure and the heating structure arranged on the outside of the moving component can be cooperated to perform dust-absorbing and heating softening activities on the fabric, so as to assist in enhancing the dyeing uniformity of the fabric, so as to greatly enhance the dyeing quality and uniformity.

The invention discloses an automatic diameter-changing yarn core and a yarn fluffing device, which belongs to the field of textile technology and comprises a desktop, a cotton core module, an upper clamp module and a cotton loosening module, wherein a first driving unit is installed on the reverse side of the desktop; the cotton core module comprises a fixed base and a plurality of curved outer walls of the yarn core which are adjustably arranged on the fixed base, and one end of the fixed base is detachably connected to a large pulley in the first driving unit; the upper clamp module comprises a gear bottom plate, which is supported on the desktop through an F-shaped seat, and an upper pressing die is connected to the gear bottom plate through a rotatable arm rod; the cotton loosening module comprises a No. 1 base fixed on the desktop, cams are rotatably installed at the four corners of the No. 1 base, a push plate is movably installed on the surface of each cam through a connecting rod mechanism, a second driving unit is installed at the bottom of the No. 1 base, the curved outer wall shell of the yarn core on the cotton core module can be freely adjusted, the diameter of the cotton core module can be changed, and there is no need to frequently replace the cotton core during production.

The invention discloses a fabric magnetization printing and dyeing auxiliary device which comprises a printing and dyeing box and further comprises a driving assembly, liquid inlets are fixedly connected to the top of the front face and the top of the back face of the printing and dyeing box, magnetizers are arranged on the outer sides of the liquid inlets, and transmission rollers are arranged in the printing and dyeing box. The left middle of the gearbox is in transmission connection with a driving motor. As the dye storage time in the printing and dyeing box is prolonged, dye precipitates easily, at the moment, the driving motor is controlled to work, stirring blades on the driving rotating shaft turn over the dye at the bottom in the printing and dyeing box, the dye in the printing and dyeing box is prevented from precipitating, and it can be ensured that the dye is evenly distributed in the printing and dyeing box; the dye is prevented from precipitating at the bottom due to the action of gravity, the layering phenomenon possibly occurs in the storage process of the dye due to different physical properties such as density and viscosity, and the layering can be broken when the dye is turned over, so that the dye is uniformly mixed again.

The utility model relates to the technical field of knitted fabric processing, and discloses a knitted fabric cold pad-batch dyeing and washing device which comprises a washing pool, a dye preliminary separation assembly is arranged on the washing pool and used for preliminarily separating dye on knitted fabric, and the dye preliminary separation assembly comprises two brush rollers and two gears. A dye swing rinsing assembly is arranged on the washing pool, brush rollers on two cleaning roller shafts can be driven to rotate outwards at the same time through operation of a series of mechanisms in the dye preliminary separation assembly, and at the moment, brushes on the brush rollers can brush off residual dye and sundries on the surface of the knitted fabric; in this step, stubborn redundant attached dye can be preliminarily cleaned, the cleaning efficiency is improved, redundant dye on the surface of the knitted fabric is rapidly removed in a mechanical mode, the tedious process that in a traditional mode, the knitted fabric needs to be preliminarily cleaned manually or independently through equipment is avoided, and the labor intensity of workers is reduced. And the dyeing uniformity and the production stability of the knitted fabric are also improved.

The invention relates to a double-agent hair dye and a use method thereof. The hair dye takes a melanin precursor as a dye intermediate, the double-agent type hair dye comprises an agent I and an agent II, and the agent I comprises the melanin precursor and an aqueous medium; the agent II comprises an alkaline agent and an aqueous medium, and the pH value of the agent II is 8-14; the double-agent hair dye further comprises a surfactant and a thickening agent, and the surfactant and the thickening agent at least exist in the agent I. According to the double-agent type hair dye, the alkaline agent and the dye intermediate mainly playing a hair dyeing role are divided into two agents, the agent I containing the dye intermediate is firstly used in the hair dyeing process, then the agent II containing the alkaline agent is used, and compared with a single-agent type hair dye, the double-agent type hair dye has the advantages that the coloring effect is better, the dyeing uniformity is better, and the product is easy to store.

The invention is suitable for the technical field of dyeing, and provides an efficient energy-saving low-emission dyeing machine and a dyeing method.The efficient energy-saving low-emission dyeing machine comprises a main body assembly, the main body assembly is suitable for placing grey cloth, the main body assembly comprises a frame, a tank body and a collecting tank, the tank body and the collecting tank are installed on the frame, and the collecting tank is located below the tank body; the collecting tank is communicated with the bottom of the outer side wall of the tank body, one side of the frame is provided with a dye barrel and a water pump, a liquid inlet of the water pump is communicated with the bottom of the outer side wall of the dye barrel, a liquid outlet of the water pump is vertically provided with a heater, and the top of the heater is communicated with a feeding pipe; the device solves the problem that grey cloth is easy to transversely move at the position of a cloth lifting mechanism, folding is intensified, and dyeing uniformity is affected, the device can correct deviation in the grey cloth conveying process by arranging four sets of adjusting mechanisms and a sliding block driven by a two-way air cylinder, two sets of stirring plates and stirring strips are matched to move in a staggered mode, grey cloth folding is relieved, and the dyeing uniformity is improved. And the dyeing uniformity and speed are improved.

The invention relates to the field of functional composite materials, and discloses a preparation process of an ecological leather fiber velvet composite material and a product. The preparation process of the ecological leather fiber velvet composite material comprises the following steps: S1, needling sea-island fibers to prepare a non-woven fabric; s2, carrying out gum dipping treatment by using a polyurethane gum dipping solution, and drying; s3, decrement splitting, water washing and drying; s4, softening treatment and sanding; s5, soaking with a pretreatment solution, dyeing with a dyeing agent, and drying; the pretreatment liquid in the step S5 contains a dyeing auxiliary agent composed of polydimethyldiallylammonium chloride, a methyl vinyl ether-maleic anhydride copolymer and bis [3-(triethoxysilyl) propyl] amine, and the dyeing agent is an acid dye containing sulfonate. According to the preparation method, through the preparation process of firstly sanding and then dyeing, and optimizing the types of the pretreatment liquid and the dyeing agent, the prepared ecological leather fiber velvet composite material has relatively good dyeing uniformity, color fastness and soft comfort, and the problem of white exposure after abrasion does not occur.

This invention provides a method for dyeing with vat dyes in an overflow dyeing machine. The use of a dye premix significantly improves dyeing performance. The cationic properties of modified cationic starch electrostatically adsorb onto fabric fibers, allowing the coated dye particles to quickly and evenly adhere to the fabric surface. This avoids localized color differences caused by uneven dye dispersion in the dye bath, and the water flow impact in overflow dyeing prevents localized dye aggregation, effectively improving dyeing uniformity and ensuring consistent dyeing results for the same batch of fabrics. The stable structure formed by the cross-linking of modified cationic starch and vat dye forms a protective film on the fabric fiber surface after color fixation, enhancing the binding stability between the dye and fiber, reducing damage to dye molecules from external factors such as light, improving the dye's lightfastness and the fabric's sunlight fastness. Its film-forming properties also make the dye and fiber bond more firmly, preventing fading.

The utility model provides a wool fiber reactive dye dyeing device which comprises a dyeing tank, supporting legs, a sealing cover, a connecting seat, a lifting steel cable, an exhaust structure, a discharge port and wool, the supporting legs are fixedly installed below the dyeing tank, the sealing cover is fixedly installed at the top of the dyeing tank, and the connecting seat is fixedly installed at the top of the sealing cover; the lifting steel cable is hung above the connecting seat, the exhaust structure is fixedly mounted in the sealing cover, and the discharge port is fixedly mounted at the bottom end of the dyeing tank; wool is placed in the dyeing tank; due to the arrangement of the sealing cover and the exhaust structure, the dye can effectively and quickly permeate into the wool, the wool can be effectively dyed, and the dye and the wool cannot fly outwards.

The utility model discloses an efficient level dyeing device for polyester low stretch yarn. The efficient level dyeing device comprises a dyeing box and a dyeing assembly. The dyeing box comprises a feeding roller and a discharging roller with the two ends fixedly installed respectively. According to the efficient level dyeing device for the polyester low stretch yarn, the movable box driven by the air cylinder in the dyeing box can be pressed into the dyeing box before the polyester low stretch yarn is dyed, so that dye liquor in the dyeing box forms a U-shaped structure so as to prolong the dyeing path of the polyester low stretch yarn, and meanwhile, the upper conveying roller at the bottom of the movable box can be used for conveying the polyester low stretch yarn into the dyeing box. The movable box can be matched with lower conveying rollers on the two sides in the dyeing box to form a wave-shaped path in polyester low stretch yarn dyeing, then the contact area between the movable box and dye liquor is increased, liquid spraying boxes are installed at the two ends in the movable box, the dye liquor in the dyeing box can be sucked through a conveying pump, pre-dyeing is conducted before polyester low stretch yarn dyeing, and spraying dyeing is conducted again after dyeing; therefore, the dyeing uniformity of the polyester low stretch yarn is improved.

The invention discloses a multistage dyeing method of cotton yarns, which is characterized in that synchronous rotation of a stirring rod and a rotating disc is intermittently started, a dynamic effect generated by the stirring rod is intermittently started to cause periodic flow and turbulent flow to be formed in a dyeing solution, and the dynamic flow helps dye molecules to be more uniformly distributed in the dyeing solution; meanwhile, centrifugal force generated by rotation of the stirring rod and the rotating disc can promote dyeing liquid to apply larger pressure to the surface of the cotton yarn, and dye molecules can penetrate through the outer layer of the cotton yarn to reach inner-layer fibers; cotton yarn is periodically tensioned and loosened in the rotating process under the action of centrifugal force, micropores of fibers can be opened, dye can enter the fibers more easily, the dyeing depth and uniformity are improved, the dyeing depth and color fastness are improved, the product quality is improved, meanwhile, the frequency of repeated dyeing is reduced, and the production cost is reduced. And the consumption of water and energy is reduced.

The invention discloses a dyeing method of a high-permeability printed mosquito net, which is characterized in that magnetic particles are pretreated and functionalized, so that the magnetic particles not only can effectively carry dye, but also can bring additional health and protection effects to the mosquito net by being soaked in a protection solution. In the dyeing process, the distribution of the magnetic particles and the dye carried by the magnetic particles on the mosquito net base cloth is accurately controlled by utilizing an externally applied dynamic controllable magnetic field, so that the dyeing uniformity and the pattern accuracy are improved. In addition, unfixed magnetic particles are recovered by using a magnetic separation technology in post-treatment, so that the material loss is reduced, and the resource utilization efficiency is improved. Finally, the safety and comfort of the dyed and printed mosquito net in the using process are guaranteed through alternating magnetic field degaussing treatment, the attractiveness and functionality of the mosquito net are improved through the method, the requirement for sustainable development is met through the environment-friendly treatment process, and the product has higher market competitiveness.

The invention belongs to the technical field of pigment production, and particularly relates to a high-color-intensity organic pigment production process which comprises the specific steps of pigment slurry preparation, composite slurry preparation, pigmentation treatment, filter pressing, washing and high-color-intensity organic pigment preparation. According to the production process, the organic pigment filter cake is beaten and then combined with bismuth oxychloride, the polarity of the organic pigment can be effectively changed, the dispersity is improved, a natural barrier is formed for the organic pigment, the coloring power of the organic pigment is improved, meanwhile, the hydrolysis reagent triethanolamine is added to act together with bismuth oxychloride, and the organic pigment with the small and stable particle size is prepared. The organic pigment is easy to dye functional chemical fibers, two solvents of DMF and NMP are used in a mixed mode in the pigmentation stage, organic pigment particles can be better dispersed, and the pigmentation treatment efficiency is improved. The production process of the high-color-intensity organic pigment is short in time, high in efficiency, green, environmentally friendly and suitable for various organic pigments.

The invention discloses a Leli silk fabric dyeing method, which comprises the following steps: carrying out ultrasonic treatment on Leli silk fibers, soaking the Leli silk fibers in nano aluminum oxide particles to obtain primary treated Leli silk fibers, carrying out acid treatment on secondary Leli silk fibers, and spraying glass particles to obtain secondary treated Leli silk fibers. After the secondary Leli silk fibers are woven into the fabric, the fabric is soaked in the acid dye liquor, various colors can be shown through different dyeing fastness of various fibers, the adsorbability to dye can be enhanced through formed different roughness, the stability of different colors on the fabric is guaranteed, and the color fastness of the fabric is improved. According to the dyeing and finishing process, different colors are shown more obviously, the defect of color mixing in the dyeing and finishing process of the Leli silk fabric in the prior art is overcome, the adaptability and flexibility of the dyeing process can be improved, and it is guaranteed that the dyeing and finishing effect on the fabric is good, and the fabric is bright in color.