55results about How to "High desizing rate" patented technology

The invention mainly discloses a cotton type woven fabric continuous biochemical pretreatment technology, relating to the technical field of composite preparation of a composite biological enzyme preparation and a composite pretreatment preparation and the application of the composite preparation in the cotton type woven fabric pretreatment technology. The technology comprises the steps of: usingthe composite biological enzyme preparation (the preparation comprises amylase, pectinase, neutral cellulose enzyme, penetrating agent JFC and stabilizing agent) to pretreat the woven fabric, therebypartially or wholly removing starch size, pectin and the other natural or artificial impurities on the woven fabric, and improving the wettability of the woven fabric; and water washing and padding the composite pretreatment liquid (the liquid comprises composite pretreatment agent, hydrogen peroxide and refined penetrating agent); and water washing with steam, wherein the whiteness, the capillary effect, the size removing rate and the strength of a product are better than the normal technology. The technology also solves the problems of high sewage alkalinity, large energy consumption and bad product quality, and the like, in a normal pretreatment technology which takes caustic soda as a main raw material.

The invention relates to a cooperative pretreatment method for biological catalysis and controlled oxidation of cotton and cotton-type fabrics, comprising the following steps: (1) preparing a biological compound enzyme preparation, a biological enzyme synergist and a non-ionic surfactant into an enzyme working solution, wherein the pH of a processing bath is 6-7.5; padding the fabrics into the working solution; carrying out heat preservation; (2) washing the processed fabrics with cold water; padding the fabrics into a hydrogen peroxide bleaching solution containing the controlled decomposition additive of hydrogen peroxide; and steaming, washing with water and drying to obtain the finished products. In the method, high-density strong base is not required to serve as a scouring agent, thepH value of pretreatment waste water is 7-8, the chromaticity is low, the COD (Chemical Oxygen Demand) value is lowered by 30% compared with that of the traditional alkali kiering pretreatment technology, the water is saved by 10-30%, and the steam and electricity can be saved by 20%. The indexes (whiteness, capillary effect, water absorption, cotton seed hull strainaway rate, desizing rate, strong force and the like) of the processed cotton and cotton-type fabric all reach the quality indexes of a semi-product, cotton seed hulls can be completely removed, and the fabrics have vivid color andgood levelling property after being dyed.

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 relates to a low-alkali pretreatment method for the in-situ catalytic degradation of impurities in cotton and cotton fabrics, which comprises the following steps: (1) preparing a biological compound enzyme preparation, a biological enzyme synergist and a nonionic surfactant into enzyme working fluid; padding a fabric in the enzyme working fluid; and carrying out heat preservation on the fabric; and (2) directly padding the treated fabric into hydrogen peroxide bleaching liquid containing a hydrogen peroxide controlled decomposing additive, and then steaming, washing and drying the fabric. According to the invention, sizes and impurities are subjected to in-situ catalytic degradation in fabrication processing, therefore, an effect of ultrahigh-concentration wastewater treatment is achieved, fabrics are easy to wash, the washing temperature and washing frequency are reduced, more than 25% of water is saved, more than 30% of steam is saved, and more than 10% of electricity is saved. The COD (chemical oxygen demand) value is reduced by more than 30% in comparison with that of a traditional alkali scouring process, the B / C value of pretreated wastewater is about 0.4, and the biodegradability is improved. All indexes (such as whiteness, capillary effect, cottonseed hull removal rate, desizing ratio, strength, and the like) of treated cotton and cotton fabrics meets the quality requirements of semi-finished products.

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 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 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 relates to a pretreatment process for combed polyester cotton bleached cloth. The pretreatment process comprises the procedures of singeing, desizing, bleaching, mercerizing and heat-shaping, wherein during desizing, the enzyme-desizing cold-dwelling process that desizing anzyme and a penetrant are added into the desizing procedure is adopted; in the bleaching procedure, the following materials are adopted: 0.2-0.4 part of potassium borate serves as the bleaching liquor, 0.8-1.2 part(s) of diethylenetriaminepenta acid (DTPMP), 0.8-2 part(s) of acrylic acid maleic acid copolymer, 0.5-1 part of 1, 5-anhydrous glucitol, 1-2 part(s) of caprolactam activator, 0.4-0.7 part of tetraacetylethylenediamine (TAED), 3-8 parts of sodium hydroxide, 3-7 parts of hydrogen peroxide and 900-1000 parts of water. When the pretreatment process is used for processing fabrics, prominent damage to the fabrics is small; as enzyme desizing is adopted, the desizing ration is improved; the bleaching liquor adopted in the bleaching procedure can effectively improve the whitenness of the fabrics; meanwhile, the pretreatment cost is lowered.

The invention discloses a desizing process of silk fabric. The desizing process comprises the following steps: performing plasma treatment on a to-be-processed silk fabric, padding-rolling the treated silk fabric in warm water, taking out the silk fabric, padding-rolling desizing liquid, piling; warming the desizing liquid to 90-120 DEG.C, steaming for 10-30min by keeping temperature, taking out the silk fabric, washing for 2-4 times by using hot water, washing for 1-3 times by using cold water, taking out and airing to obtain the desized silk fabric. The silk fabric desized through the process disclosed by the invention can be easily dyed and finished, the damage to the silk fabric is small, the desizing process is simple, and the cost is low.

The invention discloses a low-alkaline scouring agent for continuous rope scouring of cotton fabrics. The low-alkaline scouring agent comprises, in percentage by weight, 5%-15% of fatty acid methyl ester polyoxyethylene ether, 5%-15% of isomerized alcohol ether sulphate, 5%-15% of alkyl ethoxy polyglycosides, 15%-25% of isomerized alcohol polyoxyethylene ether, 0.5%-2% of a polyether modified organic silicon defoaming agent and 28%-69.5% of water. A preparation method of the low-alkaline scouring agent comprises steps as follows: (1), isomerized alcohol ether sulphate and water are mixed uniformly, and a proper amount of sodium hydroxide is added until the pH value is adjusted to range from 6 to 7; (2), alkyl ethoxy polyglycosides and fatty acid methyl ester polyoxyethylene ether are added to a mixed solution in the step (1), and the mixture is stirred and mixed uniformly; (3), the solution mixed in the step (2) is heated to 50-60 DEG C, isomerized alcohol polyoxyethylene ether is slowly poured into the solution, and the mixture is stirred and mixed uniformly. The low-alkaline scouring agent is especially suitable for continuous rope pre-processing of pure cotton fabrics, has the advantages of high desizing level, high capillary effect and low foam and can reduce the consumption of caustic soda in the scouring process and reduce pollution of caustic soda to the environment.

The invention relates to a spinning and dyeing pretreatment auxiliary agent, which is prepared by adopting the following raw material components: 30 to 50 parts by weight of desizing agent, 5 to 20 parts by weight of alkali-resisting penetrant, and 4 to 10 parts by weight of complexing agent; the desizing agent is multi-alkyl amine salt; the alkali-resisting penetrant is an alkali-resisting nonionic surfactant; the complexing agent is hydroxy carboxylate. Further, the adopted raw material components also include 1 to 10 parts by weight of hydrogen peroxide stabilizer; the hydrogen peroxide stabilizer is organic phosphonate. The spinning and dyeing pretreatment auxiliary agent can be obtained through the preparation of successively mixing the raw material components, and the spinning and dyeing pretreatment auxiliary agent can be applied to a cold-batch method or open-width scouring-bleaching method spinning and dyeing pretreatment process. The spinning and dyeing pretreatment auxiliary agent can shorten the flow of the conventional spinning and dyeing pretreatment process, can reduce the energy consumption and material consumption in the pretreatment process, and can reduce the effluent volume; an obtained intermediate product of textile fabrics has good whiteness, capillary effect and desizing percentage.

The invention discloses a refining desizing process for a chemical fiber fabric, and relates to the technical field of textile printing and dyeing pretreatment, and the refining desizing process comprises the following steps: (1) pre-shrinking; (2) refining, wherein a refining liquid is composed of the components, by weight, of 12-16 parts of sodium hydroxide with the mass concentration of 32%, 0.3-0.7 part of sodium tripolyphosphate, 5-10 parts of a refining aid, 1-5 parts of trisodium phosphate, 3-8 parts of a penetrating agent, 6-12 parts of a chelating dispersant, 3-6 parts of sodium cocoyl methyl taurate, 2-5 parts of cocamidopropyl amine oxide, 3-7 parts of alkyl glycoside and 8-15 parts of isomeric alcohol polyoxyethylene ether; wherein the grinding aid comprises the components of sodium hydrogen sulfite, sodium silicate and alkyl sulfate in a mass ratio of 2: 3: 3; (3) water washing; (4) steaming; (5) enzyme water washing; and (6) shaping. According to the invention, the problems that the desizing effect of the chemical fiber fabric is poor, and the dye uptake and the dyeing uniformity are poor are solved; a refining agent is used for refining and desizing the chemical fiber fabric, the desizing rate is high, and the dye uptake and the leveling property are good.

The present invention discloses a process for pretreating pure cotton fabric. The process comprises the following steps of inverse sewing, size shaking, enzyme piling, scouring, bleaching and silken processing, wherein in the enzyme piling step, the 9g.L<-1> scouring enzyme and a 4g.L<-1> AAA auxiliary agent are used, the temperature is 55 DEG C, the rolling-piling time is 20h, and the pick-up is 100 percent; and in the scouring step, 18 to 20g.L<-1> NaOH, and 6g.L<-1> AAA auxiliary agent are used, the pick-up is 100 percent, the pure cotton fabric is steamed at a temperature of 100 DEG C for 45min, and then water-washed at a temperature of 90 DEG C. The process has the characteristics of no damage of cellulose components of plants, good handfeel and environmental protection.

The invention discloses a preparation process of an imitated tencel style fabric, which relates to the technical field of a weaving technology. Through the process of enzymatic treatment, desizing, rolling and presetting, sand washing, splitting, dehydration, scutching, fixed drying, oiling and flapping in air on a TR fabric, and a desizing agent C15H31O(CH2OCH2)15H is added during desizing, so that the general TR fabric is processed to the TR fabric having the tencel style and hand feeling.

The invention discloses a desizing liquid and a desizing method for a polyvinyl alcohol cotton blended fabric. The desizing liquid has the pH value between 11 and 12 and comprises the following components: 1 to 3g / L of sodium tartrate, 4 to 8g / L of hydrogen peroxide, 2 to 4mumol / L of binuclear manganese complexes, 1 to 3g / L of 4-(2-nonanoyl acyloxy ethyoxyl carbonyl oxygroup) sodium benzene sulfonate, 0.5 to 1.5g / L of N-carboxymethyl-N-methyl ferric glycine (III) sodium salt and proper amount of sodium hydroxide. When the desizing liquid is utilized for performing desizing treatment on the polyvinyl alcohol cotton blended fabric, the desizing rate is high as well as the obtained fabric is high in capillary effect and mechanical property, so that the implementation of the subsequent dyeing and printing process is facilitated and the subsequent dyeing and printing quality is guaranteed. In addition, the sizing slurry is removed effectively, so that the fabric handfeeling is improved.

The invention relates to a preparation method of starch-grafted composite glutin sizing, and belongs to the technical field of textile materials. By adding hydrogenated sheep oil and hydrogenated castor oil, composite sizing is prepared, and hydrogenated sheep oil and hydrogenated castor oil have emulsifying properties under the action of tridecanol polyoxyethylene ether and monoglyceride, can beevenly mixed in the sizing, play roles in plasticizing and improve the sizing percentage of the sizing. When grease is added in an adhesive containing polar groups, grease molecules can destroy physical crosslinking points of adhesive macromolecules and make it impossible for the polar groups of the macromolecules to establish interaction and hydrogen bonds, original non-moving chain segments begin to move, the vitrification temperature of serosas is reduced, and the serosas become softer. Besides, intervals between grease molecules make cohesive force between adhesive molecules reduced, a serosa structure thus relaxes, the strength is reduced, meanwhile the adhesive molecules are kept from fully moving close to fiber due to isolation of the grease molecules, and the desizing percentage ofthe sizing can be effectively improved.

The invention discloses denim flexible warp sizing slurry and method. The slurry comprises prime slurry and supplementary slurry; the prime slurry is prepared from raw materials of starch and a multi-component sizing material with a mass ratio of (1.2-1.3): 1, in addition, the prime slurry is further prepared from raw materials of wax oil, palmitic acid and water, wherein the mass ratio of the wax oil, the palmitic acid and the multi-component sizing material is (3-4): (4-6): 100, a sized yarn slurry film is smooth, complete, elastic, high in uniformity and good in abrasion performance, the slurry is stable in physical performance, has no skinning and layering and is stable viscosity, a yarn is endowed with good hairiness adhesion state, is easy to lease, and has special antistatic ability, the warp broken end is reduced, and the weaving efficiency is improved; and a denim fabric woven by the sized yarns is beautiful in color, good in glossiness, clean in cloth cover, soft in hand feeling and durable, and the drying procedure after yarn dyeing and water washing in the denim sizing and dyeing process is omitted, so that steam consumption for drying is saved.

The invention provides a chemical fiber desizing agent and a preparation method and use method thereof. The chemical fiber desizing agent has the advantages of no phosphorus, no alkylphenol ethoxylatecompounds (APEO), high biodegradability, high desizing rate and the like, can be used for a cold pile process and a flat-width desizing and washing process, reduces a large amount of steam energy consumption and the like, saves water, electricity and steam in comparison with a traditional high-temperature (100 DEG C) desizing process, better meets the environmental protection requirements and lightens the sewage treatment burden. Through the use method of the chemical fiber desizing agent, the desizing rate of terylene memory-like cloth reaches a level 8-9, wherein the highest level is level9.

The invention relates to a pre-treatment energy-saving emission-reduction production technology, which comprises the following steps: 1)a scouring agent and hydrogen peroxide immersion bath one-step process: the multifunctional scouring agent which combines functions of an alkali collection agent, a stabilization agent, a chelating agent, an osmotic agent, an emulsifier and a detergent is used for replacing caustic soda, the stabilizing agent, the osmotic agent and the scouring agent in a traditional alkali-oxygen technology; 2)a high efficiency short-flow technology: the common cotton woven fabric employs an alkali-oxygen pad-steam one step method short-flow desizing-scouring-bleaching technology for replacing a routine desizing-scouring-bleaching method; for the thin type cotton woven fabric, a multi-functional high efficiency auxiliary agent and hydrogen peroxide one-bath one-step pad-steam technology is employed; 3)a old pad-short steaming technology; the old pad-short steaming technology is employed; 4)a biological enzyme pre-treatment technology: the biological enzyme pre-treatment technology is employed for cotton and blending fabric. The method has can effectively perform pre-treatment with energy saving and emission reduction, and can reach the environmental protection effect.

The invention discloses a desizing liquid and a desizing method for dacron fabric. The desizing liquid has the pH value between 11 and 12 and comprises the following components: 1 to 3g / L of sodium tripolyphosphate, 4 to 8g / L of hydrogen peroxide, 2 to 4mumol / L of binuclear manganese complexes, 1 to 3g / L of 4-(2-nonanoyl acyloxy ethyoxyl carbonyl oxygroup) sodium benzene sulfonate, 0.5 to 1.5g / L of N-carboxymethyl-N-methyl ferric glycine (III) sodium salt and proper amount of sodium hydroxide. When the desizing liquid is utilized for performing desizing treatment on the dacron fabric, the desizing rate is high as well as the obtained fabric is high in capillary effect and mechanical property, so that the implementation of the subsequent dyeing and printing process is facilitated and the subsequent dyeing and printing quality is guaranteed. In addition, the sizing slurry is removed effectively, so that the fabric handfeeling is improved.

The invention discloses desizing liquid for brocade silk fabric and a desizing method of the brocade silk fabric. The pH value of the desizing liquid for the brocade silk fabric is 11-12; and the desizing liquid consists of the following components: 1-3g / L of sodium gluconate, 4-8g / L of hydrogen peroxide, 2-4mumol / L of a dinuclear manganese complex, 1-3g / L of 4-(2-nonanoyloxyethoxycarbonyloxy) sodium benzene sulfonate, 0.5-1.5g / L of N-carboxymethyl-N-iron methylglycine (III) sodium salt and a proper amount of sodium hydroxide. By adopting the desizing liquid disclosed by the invention to perform desizing treatment on the brocade silk fabric, the desizing rate is high, the obtained desized fabric has a high capillary effect and a high mechanical performance and is favorable for performing successive dyeing and finishing technologies, and the successive dyeing and finishing quality is guaranteed; and moreover, the hand feeling of the fabric is improved since size is effectively removed.

The invention relates to a textile printing and dyeing pre-treatment agent. The textile printing and dyeing pre-treatment agent comprises the following components: a pre-treatment aqueous solution, adesizing auxiliary agent, a complexing agent and an alkali-resistant osmotic agent, the pre-treatment aqueous solution comprises hydrogen peroxide, biological enzyme, and a chelating dispersant WS; the desizing auxiliary agent is polyalkyl ammonium salt, the complexing agent is a nitrogen-containing organic polyphosphoric acid, and the alkali-resistant osmotic agent is an alkali-resistant nonionicsurfactant. The energy consumption and material consumption during pre-treatment are reduced, waste water discharge amount is reduced, pollution is reduced, whiteness and a desizing rate of an intermediate product of the textile are increased, and the product quality is effectively guaranteed.

The invention discloses a desizing liquid and a desizing method for a dacron cotton blended fabric. The desizing liquid has the pH value between 11 and 12 and comprises the following components: 1 to 3g / L of sodium citrate, 4 to 8g / L of hydrogen peroxide, 2 to 4mumol / L of binuclear manganese complexes, 1 to 3g / L of 4-(2-nonanoyl acyloxy ethyoxyl carbonyl oxygroup) sodium benzene sulfonate, 0.5 to 1.5g / L of N-carboxymethyl-N-methyl ferric glycine (III) sodium salt and proper amount of sodium hydroxide. When the desizing liquid is utilized for performing desizing treatment on the dacron cotton blended fabric, the desizing rate is high as well as the obtained fabric is high in capillary effect and mechanical property, so that the implementation of the subsequent dyeing and printing process is facilitated and the subsequent dyeing and the printing quality is guaranteed. In addition, the sizing slurry is removed effectively, so that the fabric handfeeling is improved.

The invention discloses a desizing liquid and a desizing method for a pure cotton fabric. The desizing liquid for the pure cotton fabric has the pH value between 11 and 12 and comprises the following components: 1 to 3g / L of sodium carbonate, 4 to 8g / L of hydrogen peroxide, 2 to 4mumol / L of binuclear manganese complexes, 1 to 3g / L of 4-(2-nonanoyl acyloxy ethyoxyl carbonyl oxygroup) sodium benzene sulfonate, 0.5 to 1.5g / L of N-carboxymethyl-N-methyl ferric glycine (III) sodium salt and proper amount of sodium hydroxide. When the desizing liquid is utilized for performing desizing treatment on the pure cotton fabric, the desizing rate is high as well as the obtained fabric is high in capillary effect and mechanical property, so that the implementation of the subsequent dyeing and printing process is facilitated and the subsequent dyeing and printing quality is ensured. In addition, the sizing slurry is removed effectively, so that the fabric handfeeling is improved.

The invention discloses a textile size recycling method. The method includes following steps: treating textile: cleaning floating dust on the surface of a textile raw material, and drying the textileraw material; sizing PVA size: soaking the textile raw material in the PVA size for sizing, and completing drying and spinning to obtain fabric A; performing ultrasonic cleaning: putting the fabric Ainto an ultrasonic cleaning tank, adding a proper amount of pure water into the ultrasonic cleaning tank, and controlling the ultrasonic cleaning tank for low-frequency cleaning; desizing: desizing the fabric A after going through ultrasonic cleaning to obtain desizing liquid and fabric B, filtering the desizing liquid, and pouring the desizing liquid into suction filtration equipment for suctionfiltration. Part of impurities in the fabric can be removed, so that improving of purity of the desizing liquid is facilitated, convenience is brought to recycling of the desizing liquid, recycling success rate and desizing rate are increased, waste liquid discharge is reduced, and environment protection is promoted.

The invention provides a desizing method of fabric, and the desizing method comprises following steps that (a) plasma treatment is conducted on the fabric to be processed; and (b) desizing treatment is conducted on the fabric obtained in the step (a). Plasma treatment on the fabric is carried out before the desizing treatment is conducted on the fabric to be processed, high-energy particles in the plasma can produce an etching effect on the surface of the textile fabric, so that a continuous coverage state of fiber spreading mass and waxiness is oxidized and destructed, molecular chains of the spreading mass is cut off, and pores and cracks are formed on the surface of a size membrane, so that the penetration of desizing working liquid can be facilitated; and meanwhile, hydrophilic groups such as hydroxide radical, carboxyl group and the like are introduced into the plasma, the dissolving of the size membrane and the removal of impurities can be favored, so that the desizing rate of the fabric is improved. The experimental result shows that the desizing rate of the fabric can reach up to 85 percent or more by utilizing the desizing method, and the capillary and mechanical property of the obtained fabric can be improved.

The invention discloses a composite desizing aid. The components are in parts by weight, 20-25 parts of hydroxypropyl acrylate, 10-18 parts of silicate, 5-7 parts of chelating dispersant, 6- 10 servings. The composite desizing aid of the present invention adopts the combination of chelating agent, hydroxypropyl acrylate and silicate, etc., which can not only consume the metal ions produced in the desizing process, but also avoid the formation of precipitates. It can also remove the pectin in the desizing solution. The desizing rate and capillary effect of the fabric have been improved, and with the removal of metal ions in the pectin, the binding force of other impurities in the hydrophobic network layer of the pectin skeleton has decreased, and it has been successively processed. , which can be further removed by washing with water, so as to obtain the ideal finishing effect.