59results about How to "Improve color fastness to washing" patented technology

The invention discloses a low-temperature dyeing and finishing technology of cottonette. The technology comprises the following steps: pretreatment; preshaping; modification treatment; dyeing; mordant removing; soaping; color fixing; post-treatment; drying; shaping; calendaring; rolling. According to the technology, pretreatment is carried out through the adoption of helicase and alpha-amylase, and modification treatment is carried out before dyeing, so that the property of the cottonette is fundamentally modified, and the dye-uptake of the fabric is increased; during the dyeing procedure, large quantities of alkaline substances and inorganic salt are not used, and a levelling agent, a low-temperature dyeing accelerant, a migration inhibitor and a dispersing agent are added, so that the dye uniformity is improved; during the whole dyeing process, the temperature is lower than 80 DEG C, and the dyeing process belongs to low-temperature dyeing, so that energy consumption is reduced; self-cleaning treatment is added in post-treatment, so that the self-cleaning capacity, wrinkle resistance and water washable firmness of the fabric are improved; post-treatment is carried out through the adoption of silk fibroin and sericin, so that the pilling resistance and antistatic property of the cottonette are improved; the whole technology is environment-friendly and free of pollution.

The invention discloses a natural dyestuff dyeing and finishing process of polyester fabric. The natural dyestuff dyeing and finishing process of the polyester fabric comprises pretreatment, preshaping, modification treatment, dyeing, mordant removing, soaping, fixation, finishing, drying, shaping, calendering and winding. According to the natural dyestuff dyeing and finishing process of the polyester fabric, helicase and alhpa-amylase are adopted to conduct pretreatment, modification treatment is radically conducted on the performance of the polyester fabric through a acetic acid aqueous solution of chitosan, hydrogen peroxide and epoxy chloropropane, and the dyeing rate of the fabric is increased; in the dyeing process, a large amount of alkaline matter and inorganic salt are not used, a levelling agent and diffusant are added, the level-dyeing property is improved, natural dyestuff is used, therefore, environmental pollution is avoided, and requirements of green environmental protection are met; modification treatment and fire-retardant treatment are conducted on the fabric through montmorillonite, and the fire resistance of the fabric is high; anti-yellowing reagents are used in the preshaping and the shaping, and the final fabric is not prone to yellowing.

The invention discloses a dyeing and finishing process for linen and cotton blended fiber fabric. The dyeing and finishing process comprises preprocessing, pre-sizing, modified processing, dyeing, mordant removing, soaping, color fixing, after finishing, drying, sizing, calendaring and rolling. Helicase, scouring enzyme and alpha-amylase are used for pretreatment, modification treatment is adopted before dyeing, the performance of linen and cotton blended fabric is modified fundamentally, and the dye-uptake rate is increased; the dyeing procedure does not require a large quantity of alkaline substances and inorganic salt, a leveling agent, substitutive alkali, a migration inhibitor and a dispersing agent are added, the dye uniformity is improved, environment pollution is avoided due to use of natural dye, and requirements for environmental protection are met; self-cleaning processing is added in the after finishing procedure, and the self-cleaning capacity, the crease-resistant performance, the washing resistance and the color fastness of the fabric are improved; crease-resistance finishing is added, and the crease-resistant performance of the fabric is improved; the whole process is environment-friendly and pollution-free.

The invention discloses a method for padding dyed cellulose fabric with natural vegetable dye. The natural vegetable dye is added to water and natural vegetable dye liquor is prepared; a cationic dye fixing agent is dissolved in the natural vegetable dye liquor and a dye working solution is prepared; the to-be-dyed cellulose fabric is immersed in the prepared dye working solution, padded on a padder and immersed in a gardenia blue dye working solution for dip dyeing and then padded on the padder, and the to-be-dyed cellulose fabric is colored; the colored cellulose fabric is dried after coloring is completed, the dried colored cellulose fabric is washed with a washing agent, and flooding is removed; the washed cellulose fabric is dried and dyeing with the natural vegetable dye is completed. The method has the benefits that the dyeing amount of the natural dye can be increased, the washing color fastness can be improved, and the color of the natural dye cannot be affected.

The invention discloses an environment-friendly dyeing and finishing technology of a cotton cellulose fabric. The technology comprises the following steps: pretreatment; preshaping; modification treatment; dyeing; mordant removing; soaping; color fixing; post-treatment; drying; shaping; calendaring; rolling. According to the technology, pretreatment is carried out through the adoption of helicase and alpha-amylase, and acetic acid aqueous solution of chitosan, hydrogen peroxide and epoxy chloropropane is adopted, so that the property of the cotton cellulose fabric is fundamentally modified, and the dye-uptake of the fabric is increased; during the dyeing procedure, large quantities of alkaline substances and inorganic salt are not used, and a levelling agent and a dispersing agent are added, so that the dye uniformity is improved; natural dye is used, so that environmental pollution is avoided, and the demand of environmental protection is met; modification treatment and fire retardant treatment are carried out on the fabric through the adoption of montmorillonite, so that the fire resistance of the fabric is high; self-cleaning treatment is added in post-treatment, so that the self-cleaning capacity, wrinkle resistance and water washable firmness of the fabric are improved; the whole technology is environment-friendly and free of pollution.

The invention discloses a dyeing and finishing process for polyamide fabric. The provided process comprises pretreatment, pre-setting, modified processing, dyeing, soaping, dye fixation, post-finishing, drying, setting, calendering and rolling. Supersonic waves are employed for pretreatment, fabric is subjected to low temperature plasma processing before the dyeing step, then 2,3-epoxy propyl trimethyl ammonium chloride is employed for modification processing of the fabric, the dyeing degree of the fabric is raised, and difficulty of the subsequent dyeing step is lowered. During the dyeing step, a lot of alkaline substances and inorganic salt are not used, natural dyes are employed, colophony powder is added as a dye-fixing agent, the dye-fixing effect is enhanced, environment pollution is avoided, and green environmental protection requirements are met. Montmorillonite is employed for modification processing and flame retardation processing of the fabric, and thus the flame retardation of the fabric is high. Anti-yellowing reagents are used both in the pre-setting and setting steps, and thus the final fabric is not easy to turn yellow.

The invention discloses a flax fabric dyeing and finishing process including pretreatment, pre-sizing, modification treatment, dyeing, soaping, color fixation, post-finishing, drying, sizing, calendering, and coiling. Ultrasonic waves are used for pretreatment, and at the same time, the modification treatment step is added; in the dyeing process, a large amount of alkaline substances and inorganic salts are not used, natural dyes are used, and at the same time, a colophony powder is added as a color fixing agent, so that the color fixing effect is enhanced, besides, the environmental pollution is avoided, and the requirements of environmental protection are met; montmorillonite is used for modification treatment and flame retardant treatment on the fabric, so that the flame retardancy of the fabric is high; and an anti-yellowing reagent is used in the processes of pre-sizing, sizing and post-finishing, so that a final fabric does not easily turn yellow.

The invention discloses an aramid fabric high-efficiency dyeing and finishing process including modification treatment, scouring and dyeing in one bath, soaping, color fixation, post-finishing, drying, sizing, calendering, and coiling. According to the dyeing and finishing process, before the dyeing process, a fabric is subjected to low temperature plasma treatment, then the fiber fabric is subjected to modification treatment with 2,3-epoxypropyltrimethylammonium chloride and chitosan, and thus the fabric dyeing degree is increased, and the difficulty of the subsequent dyeing steps is reduced; at the same time, ultrasonic treatment is adopted during modification treatment, so that the time is saved and the treatment efficiency is improved; with adopting of scouring and dyeing in one bath, the efficiency is increased, and the cost is reduced; in the dyeing process, a large amount of alkaline substances and inorganic salts are not used, natural dyes are used, and at the same time, a colophony powder is added as a color fixing agent, so that the color fixing effect is enhanced, besides, the environmental pollution is avoided, and the requirements of environmental protection are met; and with increase of anti-yellowing finishing, a final fabric does not easily turn yellow.

The invention discloses a dyeing and finishing process of polyester and cotton blended fiber fabric. The process comprises pretreatment, presetting, modification treatment, dyeing, mordant removal, soaping, color fixing, after finishing, drying, sizing, calendaring and rolling. Snailase and alpha-amylase are adopted for pretreatment, modification treatment is adopted before dyeing, the polyester and cotton blended fabric is modified fundamentally, and the dye-uptake of the fabric is increased; in the dyeing procedure, fewer alkaline substances and inorganic salt are used, a dye leveler, substitution alkali, a migration inhibitor and a diffusant are added, the dye leveling performance is improved, natural dye is used, environmental pollution is avoided, and the environment-friendly requirement is met; self-cleaning treatment is added during aftertreatment, and the self-cleaning capacity, the crease-resistant performance, the wash durability and color fastness are improved; silk fibroin and sericin are adopted for afterfinish, and the anti-pilling performance and the antistatic performance of the fabric are provided; the whole process is environment-friendly and pollution-free.

The invention discloses a low-temperature dyeing and finishing technology for bamboo fiber fabric. The low-temperature dyeing and finishing technology includes the steps of pretreatment, preshaping, modification treatment, dyeing, mordant removal, soaping, color fixation, after finishing, drying, shaping, calendering and rolling. Helicase, scouring enzyme and alpha-amylase are adopted for pretreatment, modification treatment is adopted before dyeing, the performance of the bamboo fiber fabric is modified fundamentally, and the dye-uptake rate of the fabric is increased; as in the dyeing working procedure, alkaline substance and inorganic salts are not used in quantity, and a levelling agent is added, the dyeing levelness is improved; environment pollution is avoided by using natural dyestuff, which meets the requirement for environmental protection; as self-cleaning treatment is added in after treatment, the self-cleaning capacity, crease-resistant performance and wash-resisting firmness of the fabric are improved; crease-resistant finishing is added, and therefore the crease-resistant performance of the fabric is improved; the whole technology is environmentally friendly and free from pollution.

The invention discloses a dyeing and finishing process for modal fabric. The process comprises the procedures of pretreatment, pre-setting, modification treatment, dyeing, soaping, fixation, after-finishing, drying, sizing, calendering and rolling. According to the invention, pretreatment is carried out by adopting ultrasonic wave, and a step of modification treatment is added; in the dyeing procedure, a base substituent SA is used, use of a large quantity of alkaline substances and inorganic salt is avoided, nature dye is adopted, and colophony powder is added as a fixing agent, so that the color fixing effect is enhanced, environmental pollution is avoided, and the requirement of green environmental protection is met; furthermore, montmorillonoid is adopted to carry out modification treatment and flame retardant treatment on the fabric, so that the flame retardancy of the fabric is high. According to the invention, a yellowing-resisting reagent is used in the procedures of pre-setting, sizing and after-finishing, so that the final fabric cannot become yellow easily.

The invention discloses a high-fixation high-flame retardation polyester fabric dyeing and finishing technology. The technology comprises pre-treatment, pre-setting, modification treatment, dyeing, soaping, dye fixation, after finishing, drying, setting, calendering and rolling. Supersonic wave is used for pre-treatment and a modification treatment process is used. In dyeing, a lot of alkaline substances and inorganic salts are avoided, natural dye is adopted and colophony powder is used as a dye-fixing agent so that dye fixation effects are improved, environmental pollution is avoided and environmental protection requirements are satisfied. Through modification and flame retardation treatment on the fabric by montmorillonite, fabric fire resistance is high. Through the dyeing and finishing technology, the high-fixation high-flame retardation polyester fabric is obtained.

The invention discloses a polyamide fabric modifying, dyeing and finishing process. The process comprises the steps of pretreatment, pre-setting, modification treatment, dyeing, soaping, color fixing, after treatment, drying, setting, calendering and rolling. Helicase and alpha-amylase are adopted for carrying out pretreatment, mixed liquor of nanometer titanium dioxide, gamma-(2, 3-epoxypropoxy) trimethoxypropylsilane and caprolactam is adopted for modifying performance of polyamide fabric fundamentally, and the dye-uptake rate of the fabric is increased; in the dyeing working procedure, a large number of alkaline substances and inorganic salts are not used, a leveling agent and a dispersing agent are added, and dyeing levelness is improved; meanwhile, as rosin powder is added to serve as a color fixing agent, the color fixing effect is enhanced, environmental pollution is avoided, and the requirement for environmental protection is met; moreover, montmorillonite is adopted for carrying out modifying and flame retarding on the fabric, and therefore the fire retarding property of the fabric is high; anti-yellowing reagents are used in the presetting and setting steps, and therefore the final fabric is not prone to yellowing.

The invention discloses an efficient dyeing and finishing process for a chemical fiber fabric, which comprises the procedures of modification treatment, one-bath scouring dyeing, soaping, fixation, after finishing, drying, sizing, calendering and rolling. According to the invention, pretreatment is carried out by adopting ultrasonic wave; before the procedure of dyeing, the fabric is subjected to low-temperature plasma treatment, and then 2, 3-glycidyl trimethyl ammonium chloride is adopted for carrying out modification treatment on the fiber fabric, so that the degree of dyeing of the fabric is increased, and the difficulty of subsequent dyeing step is lowered; since one-bath scouring dyeing is adopted, the efficiency is increased, and the cost is lowered; in the dyeing procedure, use of a large quantity of alkaline substances and inorganic salt is avoided, nature dye is adopted, and colophony powder is added as a fixing agent, so that the color fixing effect is enhanced, environmental pollution is avoided, and the requirement of green environmental protection is met; furthermore, montmorillonoid is adopted to carry out flame retardant treatment on the fabric, so that the flame retardancy of the fabric is high. According to the invention, a yellowing-resisting reagent is used in the procedure of sizing, so that the final fabric cannot become yellow easily.

The invention relates to a collating liquid. It is mainly compounded by nanometer silicasol, fortifier, and water. The percentage of the nanometer silicasol and fortifier to woven fabric weight are: the former is 2-100%; the later is 0.5-10%. Bath ratio is 1:6-60. The collating liquid manufacturing method includes the following steps: orderly adding nanometer silicasol, water and fortifier in the above proportion; stirring uniformly. The advantages of the invention are that the silicasol is treated with woven fabric by dipping and padding method to make it do gelatination on fabric to make fluffy not easy to pull out and intertwine. It can greatly improve woven fabric fluffing and balling-up resistance, felt resistance and colour woven fabric colour fastness to washing.

The invention discloses a processing method for chemical-preventing fabric, and belongs to the technical field of textile industry. The method is carried out on the basis of gray fabric woven from pure cotton yarns or polyester cotton yarns, and comprises the processes of blank inspection, seam overturning, singeing, cold batching, short steaming, washing and dyeing. The method is characterized by also comprising the steps of A, open-width washing, B, chemical-preventing arrangement, C, preshrinking treatment, and D, baking. The chemical-preventing fabric processed by the method has a function of preventing sulfuric acid, hydrochloric acid, nitric acid and caustic soda, has a good function of preventing chemical solvents such as o-xylene, methyl alcohol and acetone, and meets an EN14325 chemical-preventing standard.

The invention relates to a method that a mercerized cotton fabric is colored in deep tone with reactive dye, which comprises that: 1) the cotton fabric can be pretreated by being added with bicyclic oxides and weak base in room temperature, and then the cotton fabric can be added with cyclodextrin of 0.5 percent to 9 percent(o.w.f) for further processing while being implemented with mercerization; 2) after being dyed for 10 to 20 min, the processed mercerized cotton fabric is added with salt in a bath ratio of 20-40 :1 under the temperature of 30 DEG C to 40 DEG C, and then is added with calcined soda after 10 to 20 min; after 20 to 40 min, the processed mercerized cotton fabric is washed and boiled with soap, and then is washed again and dried; meanwhile, which is compared with the dyeing of general mercerized cotton fabric; 3) the degree of exhaustion, fixation rate, K / S value and color fastness of the dye and dyed fabrics are tested. The method can effectively improve the deep-dyeing property of which the mercerized cotton fabric is dyed with mesothermal reactive dye in the condition of low-temperature fixation, moreover, the method has the advantages of low fixation temperature, low energy consumption, economy and environmental protection.

The invention provides a regenerated fiber blended knitted fabric and a preparation method thereof. Blended yarn includes, by mass, 35% of regenerated cotton fiber and 65% of regenerated polyester fiber, the transverse density of the knitted fabric is 71 / 10 cm, and the longitudinal density of the knitted fabric is 39 / 10 cm. Therefore, the regenerated fiber blended knitted fabric has the advantagesof cotton and terylene, is full and soft in hand feeling, good in air permeability, excellent in elasticity and wear resistance under dry and wet conditions, good in stiffness and shape retention property and not easy to wrinkle and can be rapidly dried and free of ironing after washing, waste turns into treasure, the production cost is reduced, and the short supply of natural fibers is made up for. Besides, the regenerated fiber blended knitted fabric prepared by the preparation method is detected according to the relevant standards, the detection result shows that the developed product is free of formaldehyde and has good environmental protection characteristics; the color fastness to washing and the fastness to rubbing of the fabric are higher than the standards, the production processof the product is feasible, and the product quality and functions can reach the advanced level in China.

The invention discloses a fixed color label cloth. The fixed color label cloth is characterized by comprising basic layer cloth and a coating layer arranged on the basic layer cloth, wherein the thickness of the basic layer cloth is 0.110mm-0.130mm, the hardness is 2.6-3.5, the gram weight is 128g / m<2>-188g / m<2>, and the thickness of the coating layer s 0.120mm-0.150mm; the specification of yarns for manufacturing the basic layer cloth is 100-150D, the warp density is 95 / cm-130 / cm, and the weft density is 33 / cm-42 / cm. The fixed color label cloth provided by the invention has the advantages that the fixed color label cloth can be subjected to special treatment after dyeing, the colour fastness, flatness and uniformity are improved, and the fixed color label cloth is realized.

The invention discloses a hair dye, which is composed of the following raw materials in percentage by weight: 20.0 to 30.0% of organic solvent, 0.50 to 1.0% of direct dye, 0.80 to 1.50% of thickening agent, 0.50 to 2.0% of polymer resin, 0.50 to 2.0% of amino end group polysiloxane, 0.20 to 0.50% of protein hydrolysate, and the balance being deionized water. The provided hair dye has a very good dyeing performance, is capable of improving the color fastness and performance on resisting shampoo washing, and effectively solves the problem of easy fading.

The invention discloses a method for improving dyeing property of natural dye. The method comprises the following steps: dissolving the natural dye with the mass being 3 to 40 percent of that of to-be-dyed fiber and a cationic dye fixer being 5 to 20 percent of that of the to-be-dyed fiber into water, and stirring until dye liquor is uniform, thus completing preparation of the dye liquor; soaking the to-be-dyed fiber into the prepared dye liquor for a period of time, then heating up to a dyeing temperature of 70 to 100 DEG C, and then preserving heat for 30 to 90min, thus completing colouring on the to-be-dyed fiber; after colouring is completed, reducing the temperature of the dye liquor to room temperature, taking out the fiber, and drying; washing the dried fiber with a detergent, and removing loose colour; drying the washed fiber, thus completing dyeing of the natural dye. The method has the beneficial effects that a suction rate and a fixation rate of the natural dye can be improved, meanwhile the colour fastness to washing of the the natural dye is also improved, and the colour and lustre of the natural dye cannot be affected.

The invention relates to viscose rayon / coffee carbon blending knitted fabric. The viscose rayon / coffee carbon blending knitted fabric is characterized by comprising the steps that fabric weave is adopted; plain weaving is carried out on a single face; the horizontal density is 62.5 longitudinal rows / 10 cm, the longitudinal density is 44.5 horizontal rows / 10 cm, and the needle size is 12 G; weaving is carried out on a computerized flat knitting machine; by adopting 40 s, 40% coffee carbon fibers and 60% viscose rayon fibers, yarn siro spinning is carried out, plying is conducted, yarns are obtained, and the doubling twist of yarn is 290 twists / m; the gram weight is 218 g / m<2>. According to the viscose rayon / coffee carbon blending knitted fabric, style and feel of traditional shell fabric are obtained, and functional characteristics such as moisture absorption, air permeability, bacteriostasis, deodorization, warming, heat insulating and far infrared ray launching are obtained, the fabric integrates the health care function and the comfortable function, and the fabric is ideal fabric used for producing socks, underwear, T-shirts and other personal clothes.

The invention provides a finishing fluid for cotton dress and a preparation method thereof. The finishing fluid comprises the following components by weight: 3 to 6 parts of sucrose fatty acid ester, 2 to 3 parts of sodium citrate, 4 to 6 parts of methyl cellulose, 5 to 9 parts of dimethylolpropionic acid, 7 to 9 parts of ethyl formate and 130 to 145 parts of water. The preparation method for the finishing fluid comprises the following steps: heating; warming; mixing; etc. The cotton dress processed by using the finishing fluid has high color fastness to washing.

The invention discloses a refining-dyeing one-bath process efficient short-process dyeing and finishing process for a chinlon knitted fabric. The process comprises the following steps: presetting for30 seconds at the temperature of 180-190 DEG C at the speed of 40-45 m / min, refining and dyeing for 30-45 minutes at the bath ratio of 1:8 at the temperature of 100 DEG C, and after-finishing for 30-45 seconds at the setting temperature of 190-200 DEG C at the speed of 30-40 m / min; the formula of refining and dyeing comprises 2-5 g / L of refining-dyeing one-bath degreaser, 2-3 g / L of chelated dispersing agent, 1-2 g / L of chinlon levelling agent, and 0.1-10 owf of weak acid dye; and the after-finishing needs 10-20 g.L<-1> of a functional finishing agent. According to the refining-dyeing one-bathprocess efficient short-process dyeing and finishing process for the chinlon knitted fabric, the chinlon knitted fabric is preprocessed and dyed in the short process through the refining-dyeing one-bath process, the size and morphological stability of the chinlon knitted fabric is guaranteed, and the problems of fabric wrinkling, bruising, dyeing effect, dyelot chromatism and the like in the conventional process are eliminated.

The invention relates to an acidic color fixing agent and a preparation method and application method thereof, wherein the acidic color fixing agent is prepared from, by mass, 40-50% of resin, 20-40%of glacial acetic acid, 2-8% of an activator, 5-20% of a solvent, 8-20% of a sulfonating agent, 10-30% of deionized water, and 3-5% of a stabilizer, wherein the acidic color fixing agent has the advantages that a color fixing working liquid is stable, agglomeration particles are avoided, the generation of color fixing spots in the color fixing process of a fabric can be avoided, the color change of the fabric after color fixing is reduced, and the color fastness to washing, the color fastness to perspiration and the like are improved.

The invention relates to the technical field of textile and in particular relates to a treatment method for a green cotton fiber. The treatment method for the green cotton fiber comprises the following steps: mixing ammonium ferrous sulfate with an emulsification extraction solution which comprises a refining agent and an extracting agent to prepare a treatment solution capable of showing capillary effect and toning color light; putting the green cotton fiber into the treatment solution for treating; and washing and drying the green cotton fiber which is treated by the treatment solution. According to the treatment method for the green cotton fiber, a one-bath method is adopted, so that the green cotton fiber is treated by the emulsification extraction solution and ammonium ferrous sulfate; color fixation treatment of the green cotton fiber is carried out by using ammonium ferrous sulfate after a good hydrophilic base is obtained; the light fastness is improved; and the color fastness to soaping and the perspiration resistance color fastness are simultaneously improved.

The invention discloses a continuous dyeing and finishing process for bamboo-cotton-polyester blended antibacterial anti-ultraviolet anti-static woven fabric. The woven fabric is sequentially subjected to the steps of strengthened singeing, high-temperature enzyme desizing, scouring, bleaching, mercerizing, sizing, dyeing and finishing. In the step of dyeing, polyester fiber components are dyed by disperse dye, the disperse dye is padded, then two groups are pre-dried by infrared rays, then hot air drying is carried out by adopting a three-section pre-drying room, the temperature of a first box is 50-60 DEG C, the temperature of a second box is 70-90 DEG C, the temperature of a third box is more than 100 DEG C, and finally the polyester fiber components are baked at 210 DEG C for 3.5 minutes; according to the color fastness requirement, the reactive dye or the vat dye is determined to be used for dyeing the bamboo / cotton fibers. The scouring and bleaching auxiliary agent with the environment-friendly low-alkaline property is adopted, the environment-friendly enzyme desizing process is combined, dyeing and finishing are conducted, and meanwhile the cloth cover quality and the whiteness effect of the bamboo-cotton-polyester blended fabric are guaranteed, and the excellent anti-ultraviolet, antibacterial, deodorant, moisture-absorbing and quick-drying performance is achieved.

The invention relates to a production technology for an imitating batik fabric. The production technology comprises the following processing steps in turn: treating a base cloth surface, performing intaglio printing, baking under high temperature, dyeing in cold pad-batch, soaping for removing surface dyeing, and the like. The process of dyeing in cold pad-batch includes alkali liquor padding, dye coating and rolling cold stacking. According to the invention, the higher water repellency of a carbon fluorine waterproof agent is utilized and a pattern type roller with a natural ice pattern effect and a gradient chromatic halo effect is adopted for producing the fabric with a batik effect, so that the characteristics of the original batik fabric are remained and the style diversification can be realized through the combination and evolution of the styles, such as, pattern layout, chromatic halo effect, ice pattern effect and cracking effect; the limitation of dye color can be broken through, the dye is not limited to indigo blue dye, the color of the fabric is more abundant and the art expressive force is greatly increased; the production technology can realize the large-scale industrial production, has higher stability and reproducibility and high production efficiency, is more environment-friendly, can achieve higher color fastness to washing and has an excellent dry and wet rubbing fastness property.

The invention discloses a water-soluble MDI (4,4-Diphenylmethane Diisocyanate)-TMP(Trimethoprim) type polyurethane dye liquor and application thereof. The water-soluble MDI-TMP type polyurethane dye liquor is prepared by the following steps of: a, preparing polyurethane: adding ethyl acetate and MDI into a reaction kettle filled with nitrogen gas or carbon dioxide; after the mixture is fully dissolved by stirring, slowly adding TMP, heating and carrying out a pre-polymerizing reaction for 1-4 hours; after the temperature is reduced below 30DEG C, adding sodium bisulfite and carrying out an end-capping reaction for 1-2 hours, and finally, adjusting the pH value to be 4.5; and b, heating the polyurethane obtained in the step a to be 50-60DEG C and adding 5-8 weight percent of dye and 1-3g / L of sodium sulfate. According to the water-soluble MDI-TMP type polyurethane dye liquor disclosed by the invention, the bonding force of the dye on textile is greatly improved and the color fastness to washing of textile products is improved.

The invention discloses a method for increasing the dye uptake of a cellulosic fiber dyed with natural dyes. The method comprises the following steps of 1) preparing a decamethyl pentasiloxane solution containing auxiliaries; 2) preparing a dyeing solution; 3) completing preparation of a decamethyl pentasiloxane dyeing solution; 4) completing dyeing to obtain a dyed product; 5) preparing a dye-fixing solution; 6) completing preparation of a decamethyl pentasiloxane dye-fixing solution; 7) completing dye fixation. The method can effectively increase the uptake of the dyes in the cellulosic fiber dyed with the natural dyes, improve the utilization rate of the dyes and enhance the washable color fastness of the dyed cellulosic fiber; meanwhile, decamethyl pentasiloxane is an environment-friendly solvent and can be recycled. According to the method for increasing the dye uptake of the cellulosic fiber dyed with the natural dyes, applied dyeing and dye-fixing methods are low in water consumption to effectively reduce water consumption during a dyeing process, save resources and cost and increase the value of products.