Dyeing production method of high-quality polyester cotton yarn-dyed fabric

Abstract

The invention discloses a dyeing production method of a high-quality polyester cotton yarn-dyed fabric, and relates to the technical field of textile dyeing, and the method comprises the following steps: selecting a corresponding treatment process to carry out dyeing pretreatment on yarns according to fiber components of the yarn-dyed fabric yarns; according to the characteristics of yarn-dyed fabric yarns, selecting a corresponding dyeing process to dye the yarns; treating the dyed yarn-dyed fabric yarns by adopting a vacuum dehydration and combined drying process; the dried yarn-dyed fabric yarn is subjected to sizing treatment; weaving the sized cotton yarns and polyester yarns into cloth; and finishing the woven yarn-dyed fabric, so that the yarn-dyed fabric is converted into a finished fabric. According to the method, the periodic pressure technology and the efficient environment-friendly auxiliary are introduced, dyeing treatment is carried out according to the characteristics of the polyester yarn and the cotton yarn, and the technical problem that the dyeing quality is unstable in the traditional dyeing industry is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textile dyeing, in particular to a dyeing production method of high-quality polyester-cotton yarn-dyed fabric. BACKGROUND

[0002] The polyester-cotton yarn-dyed fabric is a fabric produced by the process of "dyeing yarn first and weaving fabric later", which is composed of polyester and cotton blended yarn. The yarn is dyed before weaving, aiming to give the fabric richer colors, stronger three-dimensionality and better color fastness. This process enables the dye to fully penetrate the yarn, resulting in a full-color and clear-level finished product, and the production process is relatively energy-saving and environmentally friendly.

[0003] The traditional polyester-cotton yarn-dyed fabric has problems such as high energy consumption, high water consumption, serious wastewater pollution, and unstable dyeing quality caused by ring dyeing, color mottle and batch color difference. The high energy consumption is rooted in the fact that polyester dyeing must rely on a high-temperature and high-pressure environment of 130-135°C. The heating, holding and cooling of this process consume more than 60% of the steam and electricity of the whole production line, becoming a huge cost burden. The high water consumption and serious pollution are caused by the complicated post-treatment process. The reduction cleaning of polyester and the high-temperature soaping of cotton yarn produce a large amount of high-color, high-alkalinity and high-COD difficult-to-treat wastewater containing dyes, auxiliaries and sizing agents, which brings huge environmental pressure. The unstable dyeing quality is manifested in the following aspects: the "ring dyeing" caused by the difficulty of dye penetration into the yarn layer makes the yarn rubbing fastness extremely poor; the "color mottle" caused by improper temperature control or uneven circulation makes the fabric color uneven; and the "batch color difference" caused by process parameters, raw material batches and human operation fluctuations leads to product color grade scrap. These problems jointly restrict the improvement of production efficiency and product quality.

[0004] Therefore, it is urgent to propose a dyeing production method of high-quality polyester-cotton yarn-dyed fabric to solve the technical problem of unstable dyeing quality caused by traditional dyeing industry. SUMMARY

[0005] The present application provides a dyeing production method of high-quality polyester-cotton yarn-dyed fabric, which introduces periodic pressure technology and efficient and environmentally friendly auxiliaries to solve the technical problem of unstable dyeing quality in traditional dyeing industry by dyeing treatment according to the characteristics of polyester yarn and cotton yarn.

[0006] To solve the above technical problems, the present application provides the following technical solutions: The present application provides a dyeing production method of high-quality polyester-cotton yarn-dyed fabric, which includes: S1. According to the fiber composition of the yarn raw material of the yarn-dyed fabric, the corresponding treatment process is selected for pre-treatment of the yarn before dyeing, wherein: The pre-treatment process includes bleaching process and refining process, the yarn material of the yarn-dyed fabric is divided into cotton yarn and polyester yarn, the cotton yarn material is pre-treated by bleaching process, and the polyester yarn material is pre-treated by refining process; The bleaching process step is to add hydrogen peroxide, sodium hydroxide and sodium bisulfite into a treatment cylinder, and keep the temperature at 95-100 DEG C for 45-60 minutes, after the bleaching is completed, the pH value of the treatment liquid is neutralized to 10.5-11.0 by using dilute acid solution; The refining process step is to add sodium hydroxide and refining agent into the treatment cylinder, and keep the temperature at 80-90 DEG C for 20-30 minutes, the refining agent includes surfactant, chelating agent and cosolvent.

[0007] S2 according to the characteristics of the yarn-dyed fabric yarn material, the corresponding dyeing process is selected to dye the yarn, wherein: The yarn-dyed fabric yarn material is cotton yarn, which is dyed by normal temperature fixation process, and the yarn-dyed fabric yarn material is polyester yarn, which is dyed by high temperature and high pressure dyeing process; The dyeing process of the cotton yarn includes dyeing promotion stage and fixation stage, post-treatment stage; The dyeing process of the polyester yarn includes preparation of dyeing liquid stage, temperature rising dyeing stage and temperature dropping discharge stage.

[0008] The specific steps of the dyeing promotion stage are as follows: the temperature of the dyeing liquid is adjusted to 30-40 DEG C at a rate of 1.0 DEG C / min, and active dye and anhydrous sodium sulfate are added into the dyeing cylinder, the concentration of the anhydrous sodium sulfate is 50 g / L; The specific steps of the fixation stage are as follows: sodium carbonate is added into the dyeing cylinder as fixation agent, and the temperature is kept at 50-65 DEG C for 40-60 minutes for fixation; The specific steps of the post-treatment stage are as follows: the dyed yarn is washed, soaped and washed again, the soaping process uses soaping agent to treat at 85-95 DEG C for 20 minutes.

[0009] The dyeing liquid includes disperse dye, acetic acid, dispersing agent and leveling agent, the acetic acid is used to adjust the pH value of the dyeing liquid to 4.5-5.5, the dispersing agent is anionic surfactant, the concentration of which is 1.0-1.5 g / L, and the leveling agent is nonionic surfactant, the concentration of which is 0.5-1.0 g / L; The temperature rising dyeing stage includes a preheating stage, a temperature rising stage, and a temperature maintaining stage, the specific steps of the preheating stage are to make the dyeing solution circulate at a temperature of 50-60℃ for 15 minutes, the specific steps of the temperature rising stage are to make the dyeing solution rise in temperature from 60℃ to 130℃ at a rate of 2.0℃ / min, and the specific steps of the temperature maintaining stage are to maintain the temperature at 0.18 MPa for 30-45 minutes; The specific steps of the temperature dropping and discharging stage are to drop the temperature of the dyeing solution to below 40℃ at a rate of 1.0℃ / min and then take out the yarn.

[0010] S3 is to perform vacuum dewatering and combined drying treatment on the dyed yarn, wherein: The specific steps of the vacuum dewatering treatment are to place the yarn in a sealed cavity with a vacuum degree of -0.1 MPa, use a yarn dewatering machine for dewatering, and the treatment time is 3 minutes; The combined drying treatment includes a microwave rapid drying stage and a hot air continuous drying stage, the specific steps of the microwave rapid drying stage are to set the microwave frequency of the microwave drying to 2450MHz±50MHz and dry for 10 minutes in an environment with a temperature of 60-80℃, and the specific steps of the hot air continuous drying stage are to use a heat pump type hot air system to continuously dry the yarn at a temperature of 70-110℃ for 2 hours; The air volume of the heat pump type hot air system is adjusted by a frequency converter according to the preset exhaust humidity, and the preset range of the exhaust humidity is 40%-65% RH.

[0011] S4 is to perform sizing treatment on the yarn of the color-woven fabric after drying, wherein: The sizing treatment steps include a batching mixing stage, an auxiliary pretreatment stage, and a foam sizing stage; The specific steps of the batching mixing stage are to select 60-80 parts by weight of grafted modified starch, 20-40 parts by weight of bio-based water-soluble polymer, and 1-5 parts by weight of nanocellulose, mix them in water at room temperature, and high-speed stir until completely dissolved to form a uniform and stable sizing solution; The specific steps of the auxiliary pretreatment stage are to pretreat the yarn to be sized by passing through a pretreatment tank with warm water inside, and the yarn is cleaned and activated on the surface by a low-frequency ultrasonic generator using ultrasonic cavitation effect when passing through the pretreatment tank; The specific steps of the foam sizing stage are to send the sizing solution prepared in the batching mixing stage, a foaming agent, and a foam stabilizer into a foam generator, and introduce compressed air to generate stable foam with a dryness index of 5-10, and then uniformly coat the foam on the surface of the warp yarn treated in the auxiliary pretreatment stage through a slit applicator.

[0012] After the sizing treatment step is completed, an infrared drying treatment is performed, and the specific steps of the infrared drying treatment are as follows: the foam-sized yarn is passed through a medium-short wave infrared radiator, and is subjected to rapid drying treatment at a temperature of 80-100 DEG C for 30 seconds, so that the surface sizing film is set.

[0013] S5: the sized cotton yarn and the polyester yarn are woven into cloth, wherein: The weaving step includes a warp yarn preparation stage, a weft yarn preparation stage, and a loom weaving stage. The specific steps of the warp yarn preparation stage are as follows: the polyester yarn and the cotton yarn of a predetermined color are used as warp yarns, and are sequentially subjected to warping, sizing, and threading treatment to form a beam. The specific steps of the weft yarn preparation stage are as follows: the polyester yarn and the cotton yarn of a predetermined color are used as weft yarns, and are subjected to bobbin treatment to be wound into weft yarn packages suitable for weaving. The specific steps of the loom weaving stage are as follows: the beam and the weft yarn packages are installed to a shuttleless loom, and the shuttleless loom is controlled to perform the cycle actions of shedding, weft insertion, beating-up, take-up, and let-off according to a predetermined fabric weave pattern, so that the warp yarns and the weft yarns are interwoven to form a yarn-dyed grey cloth.

[0014] S6: the woven yarn-dyed cloth is finished to be converted into a finished fabric, wherein: The finishing step includes a singeing stage, a desizing stage, a setting stage, and an inspection and packaging stage. The specific steps of the singeing stage are as follows: the yarn-dyed grey cloth is passed through a hot metal surface at a temperature of 200 DEG C at a speed of 80-120 m / min to remove surface fluff. The specific steps of the desizing stage are as follows: the yarn-dyed grey cloth is treated with a desizing agent to decompose and remove weaving size, and is then subjected to high-temperature water washing at 80 DEG C. The specific steps of the setting stage are as follows: the yarn-dyed cloth is heated to 180-210 DEG C under a tentering state and is subjected to heat preservation treatment for 30 minutes, and is then subjected to natural cooling. The inspection and packaging stage grades the quality according to the types and quantities of defects of the yarn-dyed cloth, and the measurement includes measuring the length, width, and weight of the cloth.

[0015] The technical solution provided by the present application has at least the following beneficial effects: The present application selects different dyeing methods for the fiber characteristics of cotton yarn and polyester yarn to penetrate the dyeing liquid, and reduces the time of high-temperature and high-pressure heat preservation, thereby reducing steam and electric energy consumption.

[0016] The present application adjusts the drying and sizing treatment conditions according to the fiber characteristics of cotton yarn and polyester yarn, thereby improving the dyeing quality of the yarn.

[0017] The application can reduce the yarn single batch dyeing cycle, improve the equipment utilization rate and reduce the production cost by adopting different dyeing schemes. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0019] Figure 1 is a flow chart of the dyeing production method of the high-quality polyester cotton color-woven fabric provided by the embodiments of the present application. DETAILED DESCRIPTION

[0020] In order to make the objects, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail in combination with the drawings.

[0021] EMBODIMENT A dyeing production method of a high-quality polyester cotton color-woven fabric.

[0022] Please refer to Figure 1 is a flow chart of the dyeing production method of the high-quality polyester cotton color-woven fabric provided by the embodiments of the present application.

[0023] S1, according to the fiber components of the color-woven fabric yarn, selecting corresponding treatment processes to perform pre-treatment on the yarn before dyeing; The pre-treatment process includes bleaching process and refining process, and the color-woven fabric yarn raw material is divided into cotton yarn and polyester yarn, the cotton yarn raw material is pre-treated by the bleaching process, and the polyester yarn raw material is pre-treated by the refining process; The bleaching process step is to add hydrogen peroxide, sodium hydroxide and sodium bisulfite into a treatment cylinder, keep the temperature at 95-100 DEG C for 45-60 minutes, after the bleaching is completed, the pH value of the treatment liquid is neutralized to 10.5-11.0 by using a dilute acid solution; The refining process step is to add sodium hydroxide and refining agent into the treatment cylinder, and keep the temperature at 80-90 DEG C for 20-30 minutes, and the refining agent includes surfactant, chelating agent and cosolvent.

[0024] It should be noted that the yarn needs to be dehydrated and dried before and after the pretreatment process, and the centrifugal dehydrator is used to remove the water on the yarn, and the hot air dryer is used to dry the yarn to the moisture regain. The pretreatment process of cotton yarn is to add 3% owf of hydrogen peroxide, 4% owf of sodium hydroxide and 1% of sodium bisulfite to the treatment cylinder, and keep the temperature at 95-100℃ for 45-60 minutes. After the treatment is completed, the PH of the solution in the treatment cylinder is adjusted to 10.5-11.0 by using acetic acid or sulfuric acid solution, and the washing is carried out by using warm water at 45℃ after pickling; the pretreatment process of polyester yarn is to add 4% owf of sodium hydroxide and 1% owf of refining agent (refining agent includes sodium alkyl sulfonate, sodium tripolyphosphate and ethylene glycol butyl ether) to the treatment cylinder, and keep the temperature at 80-90℃ for 20-30 minutes. After the treatment is completed, the washing is carried out by using hot water at 80℃.

[0025] S2 according to the characteristics of the yarn of the colored fabric, the corresponding dyeing process is selected to dye the yarn; The yarn of the colored fabric is cotton yarn, and the dyeing process is carried out at room temperature. The yarn of the colored fabric is polyester yarn, and the dyeing process is carried out at high temperature and high pressure. The dyeing process of cotton yarn includes promoting dyeing stage and fixing stage, post-treatment stage; The dyeing process of polyester yarn includes preparation of dyeing solution stage, temperature rising dyeing stage and temperature dropping discharge stage.

[0026] The specific steps of the promoting dyeing stage are: adjusting the temperature of the dyeing solution to 30-40℃ at a rate of 1.0℃ / min, and adding reactive dyes and anhydrous sodium sulfate to the dyeing cylinder, and the concentration of anhydrous sodium sulfate is 50 g / L; The specific steps of the fixing stage are: adding sodium carbonate as fixing agent to the dyeing cylinder, and keeping the temperature at 50-65℃ for 40-60 minutes; It should be noted that the sodium carbonate is added in three times, and the interval between each time is 10 minutes.

[0027] The specific steps of the post-treatment stage are: washing, soaping and secondary washing of the dyed yarn, and the soaping process is carried out by using soaping agent at 85-95℃ for 20 minutes.

[0028] It should be noted that the dyeing process of cotton yarn is specifically: soft water is injected into the cylinder to completely immerse the yarn, the temperature of the dyeing solution is adjusted to 30-40℃ at a rate of 1.0℃ / min, and the dissolved reactive dye (low or medium temperature type) and 50 g / L of sodium carbonate are added to the dyeing cylinder, then the pH value of the solution is adjusted to 10.0-11.0 by adding sodium carbonate in batches in the dyeing cylinder, and the dyeing is kept at 50-65℃ for 40-60 minutes. The dyed cotton yarn is washed with warm water at 45℃, and then washed with a soaping agent at a concentration of 1.5 g / L at 85-95℃ for 20 minutes, and then washed again with warm water at 60℃. After the treatment is completed, the cotton yarn is taken out of the dyeing machine.

[0029] The dyeing solution includes disperse dyes, acetic acid, dispersants, and leveling agents. The acetic acid is used to adjust the pH value of the dyeing solution to 4.5-5.5, the dispersant is an anionic surfactant with an addition concentration of 1.0-1.5 g / L, and the leveling agent is a non-ionic surfactant with an addition concentration of 0.5-1.0 g / L; The temperature rising dyeing stage includes a preheating stage, a temperature rising stage, and a temperature holding stage. The specific steps of the preheating stage are to circulate the dyeing solution at a temperature of 50-60℃ for 15 minutes. The specific steps of the temperature rising stage are to raise the temperature of the dyeing solution from 60℃ to 130℃ at a rate of 2.0℃ / min. The specific steps of the temperature holding stage are to hold the temperature at 0.18 MPa for 30-45 minutes. The specific steps of the temperature lowering and discharging stage are to lower the temperature of the dyeing solution to below 40℃ at a rate of 1.0℃ / min, and then take out the yarn.

[0030] It should be noted that the dyeing process of polyester yarn is as follows: the washed and dried polyester yarn is evenly loaded into the dyeing machine, soft water is injected into the cylinder to completely immerse the yarn, the calcium and magnesium ions in the water are prevented from combining with the dye to produce color spots, then disperse dyes, acetic acid, dispersants, and leveling agents are added to the dyeing cylinder, at this time the circulating pump is started, the dyeing solution is circulated at a temperature of 50-60℃ for 10-15 minutes, and the temperature of the dyeing solution is rapidly increased from 60℃ to 130℃ at a rate of 2.0℃ / min, then the temperature is held at 130℃ and a pressure of 0.17-0.18 MPa for 30-45 minutes, then the temperature of the dyeing solution is lowered from 130℃ to below 40℃ at a rate of 1.0℃ / min, and the dyeing solution is discharged after the treatment is completed, and the dyed polyester yarn is taken out of the dyeing machine.

[0031] S3 vacuum dewatering and combined drying treatment of the dyed yarn; The specific steps of the vacuum dewatering treatment are: the yarn is placed in a sealed cavity with a vacuum degree of -0.1 MPa, and the yarn is dewatered using a yarn dewatering machine, and the treatment time is 3 minutes. It should be noted that before the yarn is subjected to vacuum dehydration treatment, pulse squeezing treatment can also be carried out to keep the moisture content of the entire yarn balanced. The specific steps are as follows: the yarn is squeezed for 10 minutes using periodically changing pressure, the pressure range is 0.5-2.0 Bar, the pulse frequency is 0.5-2 Hz, and the period is 0.5-2 seconds.

[0032] The combined drying treatment includes a microwave rapid drying stage and a hot air continuous drying stage. The specific steps of the microwave rapid drying stage are as follows: the microwave frequency of the microwave drying is set to 2450 MHz±50 MHz, and the yarn is dried for 10 minutes in an environment with a temperature of 60-80℃. The specific steps of the hot air continuous drying stage are as follows: a heat pump type hot air system is used to continuously dry the yarn at a temperature of 70-110℃ for 2 hours. It should be noted that when cotton yarn is subjected to microwave drying, the microwave frequency is set to 2400 MHz and the temperature is 60℃. When polyester yarn is subjected to microwave drying, the microwave frequency is set to 2500 MHz and the temperature is 80℃. When cotton yarn is subjected to heat pump drying, the temperature is 70-90℃. When polyester yarn is subjected to heat pump drying, the temperature is 90-110℃.

[0033] The air volume of the heat pump type hot air system is adjusted by the frequency converter according to the preset exhaust humidity. The preset range of the exhaust humidity is 40%-65% RH.

[0034] It should be noted that the exhaust humidity can be monitored in real time by an online humidity sensor and then precisely adjusted by the frequency converter. The preset range of the exhaust humidity of cotton yarn can be adjusted to 50%-65% RH, and the preset range of the exhaust humidity of polyester yarn can be adjusted to 40%-50% RH.

[0035] S4 performs sizing treatment on the ombre yarn after drying; The sizing treatment steps include a batching mixing stage, an auxiliary pretreatment stage, and a foam sizing stage. The specific steps of the batching mixing stage are as follows: 60-80 parts of grafted modified starch, 20-40 parts of bio-based water-soluble polymer, and 1-5 parts of nano-cellulose are selected and mixed in water at room temperature, and high-speed stirring is performed until complete dissolution to form a uniform and stable sizing solution. It should be noted that the grafted modified starch is corn starch or cassava starch modified by grafting acrylic acid or acrylamide, the bio-based water-soluble polymer is one of polyglutamic acid or chitosan, and the nano-cellulose has a particle size range of 20-100 nm. The nano-cellulose is added by being pre-dispersed in a bio-based water-soluble polymer solution and then mixed with other components.

[0036] The specific steps of the auxiliary pre-treatment stage are: the yarn to be sized is pre-treated by passing through a pre-treatment tank with warm water inside; the yarn is cleaned and activated by the low-frequency ultrasonic generator using the ultrasonic cavitation effect when passing through the pre-treatment tank; It should be noted that the temperature of the warm water in the tank is 45℃, and the frequency generated by the low-frequency ultrasonic generator is 20-40 kHz.

[0037] The specific steps of the foam sizing stage are: the sizing agent prepared in the ingredient mixing stage is sent into a foam generator together with a foaming agent and a foam stabilizer, and compressed air is introduced to generate stable foam with a dryness index of 5-10; then the foam is uniformly coated on the surface of the warp yarn treated in the auxiliary pre-treatment stage through a slit applicator.

[0038] It should be noted that the foaming agent can be selected from sodium dodecyl sulfate or sodium alpha-olefin sulfonate, and the foam stabilizer is lauroyl propylene glycol or cocamide propyl betaine.

[0039] After the sizing treatment step is completed, infrared drying treatment is performed, and the specific steps of the infrared drying treatment are: the yarn after foam sizing is subjected to rapid drying treatment for 30 seconds at a temperature of 80-100℃ by a medium-short wave infrared radiator to make the surface sizing film set.

[0040] S5: weaving the sized cotton yarn and polyester yarn into cloth; The weaving steps include a warp yarn preparation stage, a weft yarn preparation stage, and a loom weaving stage. The specific steps of the warp yarn preparation stage are: the polyester yarn and the cotton yarn of a predetermined color are used as warp yarns, and are sequentially subjected to beaming, sizing, and threading treatment to form a beam; The specific steps of the weft yarn preparation stage are: the polyester yarn and the cotton yarn of a predetermined color are used as weft yarns, and are subjected to bobbin winding treatment to form weft yarn packages suitable for weaving; The specific steps of the loom weaving stage are: the beam and the weft yarn package are installed to a shuttleless loom, and the shuttleless loom is controlled to perform the cycle actions of shedding, weft insertion, beating-up, take-up, and let-off according to a preset fabric weave pattern, so that the warp yarn and the weft yarn are interwoven to form a colored grey fabric.

[0041] It should be noted that the shuttleless loom is a rapier loom or an air-jet loom; if the rapier loom is selected, the weft insertion is performed by the grippers of the rapier head to send the weft yarn into the shed for weaving; if the air-jet loom is selected, the weft insertion is performed by the compressed air flow to spray the weft yarn through the shed for weaving.

[0042] S6: finishing the woven colored fabric to convert it into a finished fabric; The finishing steps include a singeing stage, a desizing stage, a setting stage, and a detection and packaging stage. The specific step of the singeing stage is that the yarn-dyed grey cloth is treated by a hot metal surface with a temperature of 200 DEG C at a speed of 80-120 m / min to remove the surface fluff; The specific step of the desizing stage is that the yarn-dyed grey cloth is treated by a desizing agent to decompose and remove the weaving size, and then high-temperature water washing is performed at 80 DEG C; It should be noted that the desizing agent can be selected from amylase or oxidative desizing agent.

[0043] The specific step of the setting stage is that the yarn-dyed cloth is heated to 180-210 DEG C under the tension state and is treated for 30 min of heat preservation, and then natural cooling is performed; It should be noted that when the yarn-dyed cloth is set, the yarn-dyed grey cloth is treated by a caustic soda solution with a concentration of 200-260 g / L under the tension state, and then the caustic soda is washed away under the tension and is washed to neutral, so that the deformation of the yarn-dyed cloth in the setting process is avoided.

[0044] The detection and packaging stage grades the quality according to the types and quantity of defects of the yarn-dyed cloth, and the measurement includes the measurement of the length, width and weight of the cloth.

[0045] In addition, it should be noted that the present application can be provided as a method, device or computer program product. Therefore, the embodiments of the present application can adopt a completely hardware embodiment, a completely software embodiment or an embodiment combining software and hardware aspects. Moreover, the embodiments of the present application can adopt the form of a computer program product implemented on one or more computer usable storage media containing computer usable program code.

[0046] The embodiments of the present application are described with reference to flowcharts and / or block diagrams according to the method, terminal device (system) and computer program product of the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of the flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, embedded processor or other programmable data processing terminal device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device produce a device implemented in the flowcharts and / or block diagrams. Figure 1 The function specified in one flow or multiple flows and / or blocks. Figure 1 The device for implementing the function specified in one block or multiple blocks.

[0047] These computer program instructions can also be stored in a computer readable storage medium which can guide the computer or other programmable data processing terminal device to work in a specific manner, so that the instructions stored in the computer readable storage medium produce a product including instruction devices, which implement the flowcharts and / or block diagrams. Figure 1 The function specified in one flow or multiple flows and / or blocks. Figure 1The computer program instructions can also be loaded onto a computer or other programmable data processing terminal device to cause a series of operational steps to be performed on the computer or other programmable terminal device to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal device provide steps for implementing the flow Figure 1 The computer program instructions can also be loaded onto a computer or other programmable data processing terminal device to cause a series of operational steps to be performed on the computer or other programmable terminal device to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal device provide steps for implementing the flow Figure 1 The computer program instructions can also be loaded onto a computer or other programmable data processing terminal device to cause a series of operational steps to be performed on the computer or other programmable terminal device to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal device provide steps for implementing the flow

[0048] It is also noted that the aforementioned illustrative list of acronyms contains only some of the various abbreviations that can be used herein. Numerous other abbreviations not listed can be used as well.

[0049] Finally, it is to be understood that the above description is intended to be illustrative and not restrictive. Many other embodiments will be apparent to those of skill in the art upon reading the above description and that the scope of the application should be determined, not with reference to the above description, but should be given to the broadest interpretation of the appended claims to cover all making use of the principles and aspects of the application.

Claims

1. A dyeing production method for high-quality polyester-cotton yarn-dyed fabric, characterized in that, include: S1 selects the appropriate processing technology to perform pre-dyeing treatment on the yarn according to the fiber composition of the yarn; S2 selects the appropriate dyeing process to dye the yarn based on the characteristics of the yarn-dyed fabric. S3 uses a vacuum dehydration and combined drying process to treat the dyed yarn-dyed fabric. S4 is used to sizing the dried yarn-dyed fabric. S5 is made by weaving sized cotton yarn and polyester yarn into fabric. S6 processes the yarn-dyed fabric after weaving, transforming it into a finished fabric.

2. The dyeing production method for high-quality polyester-cotton yarn-dyed fabric as described in claim 1, characterized in that, S1 involves selecting an appropriate pre-dyeing treatment process for the yarn based on its fiber composition, wherein: The pretreatment process includes a bleaching process and a refining process. The yarn raw materials of the yarn-dyed fabric are divided into cotton yarn and polyester yarn. The cotton yarn raw materials are pretreated by a bleaching process, and the polyester yarn raw materials are pretreated by a refining process. The bleaching process involves adding hydrogen peroxide, sodium hydroxide, and sodium bisulfite to a treatment tank and maintaining the temperature at 95℃-100℃ for 45-60 minutes. After the bleaching is completed, the pH of the treatment solution is neutralized to between 10.5 and 11.0 using a dilute acid solution. The refining process involves adding sodium hydroxide and a refining agent to a treatment tank and maintaining the temperature at 80°C-90°C for 20-30 minutes. The refining agent includes surfactants, chelating agents, and co-solvents.

3. The dyeing production method for high-quality polyester-cotton yarn-dyed fabric as described in claim 1, characterized in that, S2 selects an appropriate dyeing process to dye the yarn based on the characteristics of the yarn-dyed fabric raw material, wherein: The yarn raw material of the yarn-dyed fabric is cotton yarn, which is dyed using a room temperature color-fixing process; the yarn raw material of the yarn-dyed fabric is polyester yarn, which is dyed using a high temperature and high pressure dyeing process. The dyeing process of the cotton yarn includes a dyeing accelerator stage, a color-fixing stage, and a post-treatment stage. The dyeing process of the polyester yarn includes the dye solution preparation stage, the heating and dyeing stage, and the cooling and discharge stage.

4. The cotton yarn dyeing process as described in claim 3 includes a dyeing accelerator stage, a color-fixing stage, and a post-treatment stage, characterized in that: The specific steps of the dyeing promotion stage are as follows: the temperature of the dye liquor is adjusted to 30-40℃ at a rate of 1.0℃ / minute, and reactive dye and sodium sulfate are added to the dyeing vat, wherein the concentration of sodium sulfate added is 50 g / L; The specific steps of the color-fixing stage are as follows: add sodium carbonate as a color-fixing agent to the dyeing vat and keep it at 50-65℃ for 40-60 minutes to fix the color. The specific steps of the post-treatment stage are as follows: the dyed yarn is washed with water, soaped, and washed a second time. The soaping process involves treating the yarn with soaping agent at 85-95℃ for 20 minutes.

5. The dyeing process of polyester yarn as described in claim 3 includes a dye solution preparation stage, a heating and dyeing stage, and a cooling and discharge stage, characterized in that: The dyeing solution includes disperse dye, acetic acid, dispersant, and leveling agent. The acetic acid is used to adjust the pH of the dyeing solution to 4.5-5.

5. The dispersant is an anionic surfactant with an addition concentration of 1.0-1.5 g / L. The leveling agent is a nonionic surfactant with an addition concentration of 0.5-1.0 g / L. The heating and dyeing stage includes a preheating stage, a heating stage, and a holding stage. The specific steps of the preheating stage are to circulate the dye solution at a temperature of 50-60°C for 15 minutes. The specific steps of the heating stage are to raise the temperature of the dye solution from 60°C to 130°C at a rate of 2.0°C / minute. The specific steps of the holding stage are to hold the solution at a pressure of 0.18 MPa for 30-45 minutes. The specific steps of the cooling and discharge stage are as follows: the dye liquor temperature is cooled to below 40°C at a rate of 1.0°C / minute, and then the yarn is taken out.

6. The dyeing production method for high-quality polyester-cotton yarn-dyed fabric as described in claim 1, characterized in that, S3 involves vacuum dehydration and combined drying of the dyed yarn, wherein: The specific steps of the vacuum dehydration process are as follows: the yarn is placed in a sealed cavity with a vacuum degree of -0.1MPa, and dehydrated using a yarn dehydrator for 3 minutes; The combined drying process includes a microwave rapid drying stage and a hot air continuous drying stage. The specific steps of the microwave rapid drying stage are as follows: the microwave frequency for microwave drying is set to 2450MHz±50MHz, and drying is carried out for 10 minutes at a temperature of 60-80℃. The specific steps of the hot air continuous drying stage are as follows: a heat pump hot air system is used to continuously dry the yarn at a temperature of 70-110℃ for 2 hours. The air volume of the heat pump hot air system is adjusted by a frequency converter according to the preset exhaust humidity, which is 40% - 65% RH.

7. The dyeing production method for high-quality polyester-cotton yarn-dyed fabric as described in claim 1, characterized in that, S4 involves sizing the dried yarn-dyed fabric, wherein: The sizing process includes an ingredient mixing stage, an auxiliary pretreatment stage, and a foam sizing stage. The specific steps of the ingredient mixing stage are as follows: select 60-80 parts by weight of grafted modified starch, 20-40 parts by weight of bio-based water-soluble polymer, and 1-5 parts by weight of nanocellulose, mix them in water at room temperature, and stir at high speed until completely dissolved to form a uniform and stable slurry. The specific steps of the auxiliary pretreatment stage are as follows: the yarn to be sized is pretreated by passing it through a pretreatment tank equipped with warm water inside. When the yarn passes through the pretreatment tank, the surface is cleaned and activated by a low-frequency ultrasonic generator using the ultrasonic cavitation effect. The specific steps of the foam sizing stage are as follows: the slurry prepared in the ingredient mixing stage, along with the foaming agent and foam stabilizer, is fed into the foam generator, and compressed air is introduced to generate stable foam with a dryness index of 5-10. Then, the foam is uniformly coated onto the warp surface after the auxiliary pretreatment stage through a slit applicator.

8. The sizing process as described in claim 7 includes an ingredient mixing stage, an auxiliary pretreatment stage, and a foam sizing stage, characterized in that: After the sizing process is completed, an infrared drying process is performed. The specific steps of the infrared drying process are as follows: the foam-sized yarn is passed through a medium-short wave infrared radiator and rapidly dried for 30 seconds at a temperature of 80-100℃ to set the surface sizing film.

9. The dyeing production method for high-quality polyester-cotton yarn-dyed fabric as described in claim 1, characterized in that, S5 involves weaving sized cotton yarn and polyester yarn into fabric, wherein: The weaving process includes the warp preparation stage, the weft preparation stage, and the loom weaving stage. The specific steps of the warp preparation stage are as follows: polyester yarn and cotton yarn of predetermined color are used as warp yarns, and are successively processed by warping, sizing and warping to form a warp beam. The specific steps of the weft yarn preparation stage are as follows: polyester yarn and cotton yarn of predetermined color are used as weft yarn, and they are wound into weft yarn rolls suitable for weaving. The specific steps of the weaving stage are as follows: the warp beam and weft yarn are loaded and installed onto the shuttleless loom. According to the preset fabric structure pattern, the shuttleless loom is controlled to perform cyclic actions of shedding, weft insertion, weft beat-up, take-up and warp feeding, so that the warp yarns and the weft yarns interweave to form a yarn-dyed fabric.

10. The dyeing production method for high-quality polyester-cotton yarn-dyed fabric as described in claim 1, characterized in that, S6 involves finishing the yarn-dyed fabric after weaving, transforming it into a finished fabric, wherein: The finishing steps include singeing stage, desizing stage, shaping stage, and inspection and packaging stage; The specific steps of the singeing stage are as follows: the yarn-dyed fabric is passed through a hot metal surface at a temperature of 200°C at a speed of 80-120 meters per minute to remove surface fuzz. The specific steps of the desizing stage are as follows: the yarn-dyed fabric is treated with a desizing agent to decompose and remove the weaving sizing agent, followed by a high-temperature water wash at 80°C. The specific steps of the shaping stage are as follows: heating the yarn-dyed fabric to 180-210℃ in a stretched state and holding it for 30 minutes, followed by natural cooling; The inspection and packaging stage assesses the quality of the yarn-dyed fabric based on the type and quantity of defects, and the measurements include measuring the length, width, and weight of the fabric.

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