388results about How to "Improve dyeing quality" patented technology

The invention provides a disperse dye composition suitable for basic dyeing, mainly comprising the following raw materials in percentage by weight: 40-95 percent of one or a plurality of blue dyeing components A with a structural formula (I), 1-25 percent of one or a plurality of red dyeing components B with a structural formula (II) and 4-50 percent of one or a plurality of orange dyeing components C with a structural formula (III). The disperse dye composition has a wide dependency range of pH values, and can dye in a pH value ranging from 4.0 to 10; dyed and woven fabrics with predominant color-fastness performance, such as full hues, washing fastness, and the like, can be obtained.

The invention discloses a speed-tension coordination control method for jigger fabrics; the method mainly uses a fuzzy control system to compare the sampling speed of a photoelectric coder with the set speed, and compare the tension-detection value of a tension detection device with the set tension, so as to timely adjust the control rules according to the dynamic changes of the errors to subsectionally and alternately control the speed and the tension to respectively obtain a coiling frequency fA and an unwinding frequency fB needed in maintaining the equal linear velocity constant tension of dyeing fabrics; a coiling electromotor and an unwinding electromotor are respectively controlled by a coiling transducer working in speed mode and an unwinding transducer working in torque conversion mode. The method solves the coupling problem between the speed and the tension of the jigger fabrics and makes more accurate speed-tension coordination control of the double-input/double-output, coupled and time-varying non-linear system of jiggers, so as to reduce dyeing color difference caused by instable speed and tension and improve the dyeing quality of fabrics.

This invention discloses an aid used in terylene dyeing characterizing in including the following components in weight percentage: acid aid 10-20%, organic phosphonic acid 2-5%, organic carboxylic acid 3-7%, naphthalenesulfonate 10-18%, PEG 400 single oleic acid ester 5-8%, non-ion PAA 0-2%, polytrimethylene polyethenoxy aether 0-3% and water.

The invention relates to the field of fabrics dyeing and finishing processes, in particular to a process for dyeing fabrics by combining with plasma and ultrasonic and a special device thereof. The special device comprises low-temperature normal-pressure plasma equipment, grafting reaction equipment, ultrasonic dyeing equipment, a rinsing bath and two groups of control systems, wherein the low-temperature normal-pressure plasma equipment, the grafting reaction equipment, the rinsing bath and the ultrasonic dyeing equipment are sequentially connected, one group of control systems is connected with the low-temperature normal-pressure plasma equipment, and the other group of control systems is connected with the ultrasonic dyeing equipment. The invention organically combines the low-temperature normal-pressure plasma equipment and the ultrasonic dyeing equipment, solves the problem that the dye uptake and the dyeing quality can not improved in a process of dyeing fabrics in a high crystalline region or solves the problem of high energy consumption and high pollution in the dyeing process, and can effectively realize that the dye uptake and the dyeing quality can be improved while realizing environmental-friendly production with low energy consumption and low pollution.

The invention relates to a non-woven fabric dyeing process and a non-woven fabric dyeing production line, aiming to make the process and the production line have the characteristics of high production efficiency and good dyeing quality. The invention adopts the technical proposal of the non-woven fabric dyeing process, and comprises the steps: a non-woven fabric to be dyed is soaked into a dyeing solution of a dyeing vessel for dyeing; afterwards, the non-woven fabric is cleaned with clear water, then the water is removed; and drying is performed and then the non-woven fabric is rolled into coils. The dyeing, cleaning and water removing of the non-woven fabric are performed under the holding of the mesh belt. The non-woven fabric dyeing production line comprises an uncoiling machine, a dyeing vessel, a cleaning vessel, a squeezing part, a drying cylinder group and a coiling part; the net belt is driven by a plurality of rollers arranged in parallel, and penetrates through the dyeing vessel, the cleaning vessel and the squeezing part and winds back to perform the circulating motion, so as to hold the non-woven fabric to be processed together; at least two pairs of mill rollers are arranged at the squeezing part in parallel, so as to extrude the non-woven fabric to remove the water; a plurality of dying cylinders are arranged at the drying cylinder group in parallel for heating and drying the non-woven fabric; and a cloth roller is arranged at the coiling part to roll the dried non-woven fabric.

A liquid-state disperse dye is prepared through reaction, press filter to obtain cake, dissolving it in acetone or alcohol, dissolving disperser in water, mixing them together while stirring, and heating for evaporating organic solvent.

The present invention provides one kind of integrated dyeing kettle for continuous dyeing process. The integrated dyeing kettle has one kettle body with supercritical fluid inlet and outlet, one fabric fixing device and at least one dye holding device inside the kettle body. The present invention combines the dye kettle and the dyeing kettle into one kettle and has the two technological steps of dissolving dye and dyeing fabric completed in the same kettle, so that the present invention has reduced supercritical fluid and dye loss, reduced power consumption and raised production efficiency.

The invention discloses a snagging-prevention and anti-pilling fiber fabric dyeing technology. The technology comprises the following steps of vat distributing, dye melting, dye adding, warming, heat preservation, cooling, color fixing, acid pickling and finished-product shaping. The shaping temperature is controlled to be 130-170 DEG C, and the shaping padder speed is controlled to be 25-28 m per minute. Meanwhile, a four-in-one softening agent of 1-5 g/L is added, plain cloth passes through a padder, and thus the hand feeling of fabric is made soft. In this way, 20D or 30D dacron high-stretch-yarn fabric obtained through the snagging-prevention and anti-pilling fiber fabric dyeing technology is soft and comfortable, the hand feeling is similar to that of cotton, and the phenomena of snagging and defect dyeing of fabric of 48 F or above are effectively reduced; besides, the anti-pilling grade is high, and the dyeing quality of the fabric is good.

The invention discloses a supercritical CO2 waterless dyeing system and a cloth dyeing method thereof. The method comprises the following steps of A, preparing and storing of CO2; B, cooling; C, pressurizing; D, heating, wherein a heating device is utilized for enabling CO2 to form supercritical fluid, and the supercritical fluid is heated to 120-150 DEG C; E, dyeing, wherein a circulating pump pushes a mixture of the supercritical fluid and dye to circularly flow inside a circulation channel, cloths inside a pressure kettle are dyed, the pressure inside the pressure kettle is 28-30 MPA, the temperature is 120-150 DEG C, the circulation flowing time is 20-40 min, and the circulation flow is not smaller than 10 M<3> per hour; F, pressure relieving, wherein a nanoscale color masterbatch is dissolved through the supercritical CO2 fluid, the cloths are dyed, and dyeing technological conditions such as pressure, temperature and time are optimized at the same time so as to improve the dyeing efficiency and dyeing quality.

The present invention discloses a modifier for modifying the polyester fiber as well as preparation method and application of the same. The modifier contains ethylene glycol, two-hydroxy-end polyether, dimethyl terephthalate, two-polyether-end modified organosilicon, and metal acetate catalyst. A two-step continuous production process is adopted. The first step is esterification; that is, ethylene glycol, two-hydroxy-end polyether, dimethyl terephthalate, and two-polyether-end organosilicon are added into a reactor, and have an esterification reaction in the presence of the catalyst. In the second step, the materials produced by the esterification is transported to a polymerizer, and have a polymerization reaction under the conditions of high temperature, vacuum and catalyst, producing the high molecular weight polyester/polyether/organosilicon terpolymer with a molecular weight of 1000˜50000 as the desired modifier. This modifier can be used either directly or in combination with some other substances such as surfactants, so as to modify the polyester fiber.

The invention relates to natural pigment supercritical carbon dioxide one step dyeing method. The technological process is: placing the natural pigment raw materials disintegrated and the fabric materials in supercritical carbon dioxide dyeing device; abstraction and dyeing for 50 ~ 120min in the condition of 70~150degreeC, 18-30MPa in one step; then releasing the pressure and recovering the carbon dioxide and pigment under 4-5MPa; recovering to normal and preparing dyeing fabric. Said fabric fibers are natural cellulose fiber, natural protein fiber and chemical fiber. The prominent characteristic of the invention is: it achieves the abstraction of natural pigments and the dyeing fabric completed in one step. The dyeing quality of fabric fiber is fine, process is short, and it achieves cleaning production of no abandoned products and pollution-free; the integrated cost is low, but the economic efficiency and environmental benefits are notable. Particularly, the natural pigment raw materials are medicinal plants usually, so the fiber fabric dyed could be given special medicinal function prospects.

The invention relates to a method for dying the fabric with fibroin coat, which utilizes the cation dye and acid dye to dye the rear cotton, nylone and terylene. The inventive method comprises that 1, treating the coat that furnishing the fabric in fibroin/silicon dioxide nanometer sol, drying at 40-80Deg. C, treating with methanol and drying, baking at 100-150Deg. C for several minutes, washing in water and drying; 2, pretreatment before dying comprises that 1, wetting the fabric and preparing the anion dye which is 0.1-2.0% of object mass, while the bath ratio is 1:50-1:100, and using acetate to adjust the pH value to 4.0-8.0; 2, wetting the fabric and preparing the acid dye at 0.1-2.0% of object mass, while the bath ration is 1:50-1:100, using acetate to adjust the pH value to 2.0-3.5; 3, dying process comprises that 1, dying with anion, 2, dying with acid dye; 4, drying and ironing the object. The invention has simple process, dye-uptake and high color stability, without other agents and pollution, but high economic and social benefits.

The invention relates to a fabric non-water dyeing method. The method comprises the following steps: pre-mixing a nonionic surfactant and a co-surfactant, dissolving the mixture into an organic solvent to prepare a reversed micelle solution; slowly adding an active dye solution into the reversed micelle solution, at the same time, stirring the solution until the turbid reversed micelle solution becomes clear to obtain a reversed micelle encapsulated active dye solution; soaking fabrics in the reversed micelle encapsulated active dye solution, vibrating the dye solution continuously to carry out adsorption dyeing at a constant temperature until a balance of adsorption dyeing is reached; adding a color fastening agent solution to obtain reversed micelle encapsulated fastening agent solution; and vibrating the solution continuously so as to fix the color of fabrics at a constant temperature. The fabrics are dyed by a one bath method based on a nonionic surfactant. The cost is reduced, and the dyeing effect is guaranteed. At the same time, an organic solvent is taken as the medium; the using amount of water is reduced, moreover, the organic solvent can be recovered effectively, and the environmental pollution is reduced.

The invention discloses a polyester yarn dyeing technology which comprises the following steps of preparation of cheese, cleaning treatment, presetting treatment, preparation of dye liquor, dyeing, reduction cleaning, washing, dehydration and drying, wherein the step of presetting treatment is to put the cheese after cleaning treatment in boiling water for treatment for 12-15 min; the step of preparation of the cheese comprises yarn loosening and caging, wherein the coiling density of polyester yarns after being loosened is 0.32-0.36 g/cm<3>; and the step of cleaning treatment is to immerse the polyester yarns into a light alkali solution, perform treatment for 10 min under the condition with the temperature being 100 DEG C and add 1 g/L soaping agent to perform deoiling treatment. In thepolyester yarn dyeing technology provided by the invention, presetting treatment is performed on the polyester yarns before dyeing, and after presetting treatment, the polyester yarns cannot shrink again or shrink slightly when being subjected to high-temperature dyeing as the polyester yarns are shrunk in advance before dyeing, so that polyester yarn fibers uniformly absorb a dye, and the dyeingquality of the polyester yarns is improved.

The invention provides an umbrella fabric dyeing and finishing machine, and belongs to the technical field of machinery. The machine solves the problem that existing dyeing and finishing machines are hard to use. The umbrella fabric dyeing and finishing machine comprises a rack and a fabric feeding roller, a dyeing chamber, an ironing chamber and a cloth roller which are all arranged on the rack. A dye tank is arrange at a side of the sack, support plates are arranged in the dyeing chamber, the support plates are two plates wherein a dyeing zone is formed between the two plates, sprayers are arranged at two opposite sides of the two support plates, each support plate is provided with a plurality of the sprayers wherein the sprayer distribution direction is perpendicular to the fabric delivery direction, a strip-like flow channel is arranged on each support plate while the sprayers are communicated with the flow channel, a dye delivery pump is arranged in the dyeing chamber, the inlet of the dye delivery pump is communicated with the dye tank through a pipe, and one end of each flow channel is closed while the other end is open, wherein the open end of each flow channel is communicated with the outlet of the dye delivery pump through a telescopic connecting piece. The dyeing and finishing machine further comprises two elevator mechanisms which can separately drive the up-and-down movement of the two support plates. The machine has the advantage of easy utilization.

A method for dyeing modified cellulose fabrics by green walnut epicarp pigment includes following steps of dyeing green walnut epicarp pigment dyeing extract liquor on the modified cellulose fabrics; and soaping, washing and drying after dyeing, washing and drying the modified cellulose fabrics by a direct dyeing process. The method is simple and easy in process, does not need mordant dyeing fixation and the like, is high in dyeing efficiency, fine in dyeing quality, free of toxin and pollution, low in cost and remarkable in economic and environment benefits, and has high friction resisting color fastness and washing resisting color fastness which are higher than four levels.

The invention relates to the technical field of cloth dyeing and finishing, in particular to a printing and dyeing pretreatment process for an imitated silk fabric. Influences to follow-up dyeing dueto poor desizing effect are solved. According to the technical scheme, the printing and dyeing pretreatment process for the imitated silk fabric comprises the steps of rolling, desizing, pre-shaping and reeling. In pre-shaping, a steam spraying device cooperates with a shaping machine, wrinkles on greige cloth are reduced favorably, and then, follow-up dyeing operation is facilitated; the startingtime of an unreeling device, the starting time of a transmission device and the starting time of a reeling device are different, and the effects of desizing and cleaning of the greige cloth are improved favorably, and then follow-up greige cloth dyeing quality is enhanced favorably; and by design of a scraping portion, desizing liquid on the greige cloth in a first cleaning tank and first cleaning liquid on the greige cloth in a second cleaning tank are reduced favorably, and thus, the greige cloth cleaning effect is improved.