855 results about "Lyocell" patented technology

The invention relates to the technical field of digital twinning simulation, and discloses a digital twinning-based intelligent simulation system for a lyocell fiber production line, and the system comprises a 3D modeling and digital twinning module which constructs a three-dimensional model of the lyocell fiber production line, associates the three-dimensional model with real-time production data, and finally forms a three-dimensional digital twinning model of the production line; the key equipment state prediction module predicts the residual life of the film evaporator according to the vibration data of the film evaporator; the energy consumption prediction module is used for obtaining key parameters of the glue making process and predicting an energy consumption value according to the process list of the lyocell fiber glue making process; the early warning module is used for early warning in an equipment model corresponding to the target film evaporator in the three-dimensional digital twin model according to the residual life prediction result; and the process management module is responsible for compiling, managing and issuing process files. According to the system disclosed by the invention, all the functional modules are fused and combined together to form a complete system, so that the system is of great significance in guiding lyocell production and can help enterprises to carry out better cost control.

The invention relates to the field of intelligent control based on image recognition, and discloses a Lyocell fiber production continuous feeding control method and system based on image recognition, and in the method, a feeding and conveying device continuously feeds a pulp raw material into a swelling machine at a preset feeding speed without shutdown; moreover, a camera arranged in the swelling machine obtains a to-be-detected liquid level image in the swelling machine containing the circular liquid level boundary in the non-stop continuous feeding state, then the current liquid level height in the swelling machine is obtained according to the to-be-detected liquid level image, the current liquid level height is compared with the target liquid level height, and a liquid level difference value is obtained; and the liquid level difference value serves as a control factor, the opening degree of a solvent conveying pump at a solvent inlet of the swelling machine is controlled based on a PID control algorithm, and the current liquid level height in the swelling machine is kept within a set range. Waste of production time is avoided, the large-yield requirement is met, and the overall production efficiency is improved; in addition, it is also ensured that the produced pulp porridge has good uniformity.

The invention discloses a preparation method of lyocell fibers with antibacterial, heat-storage and temperature-regulation functions. The preparation method comprises the steps of pulp oxidation, phase change microcapsule preparation and fiber spinning post-treatment. The preparation method comprises the following steps: firstly, preparing graphene oxide dispersion liquid and phase change microcapsules with proper particle sizes, oxidizing cotton pulp to form a stable cross-linking effect with an antibacterial extract, then dissolving and co-spinning the cotton pulp into the lyocell fiber with the antibacterial, heat-storage and temperature-regulation functions, and weaving the fiber into a fabric which has the properties of repelling mosquitoes, absorbing moisture, ventilating, regulating temperature and storing heat, so that the antibacterial, heat-storage and temperature-regulation functions are realized. Meanwhile, excellent antibacterial performance and washing performance are achieved. According to the preparation method of the lyocell fiber with the antibacterial, heat-storage and temperature-adjusting functions, provided by the invention, the temperature-adjusting and antibacterial effects are lasting, the preparation process is green, simple and convenient, industrial production is facilitated, and the lyocell fiber can be widely applied to the fields of close-fitting household textile articles, medical textile articles and the like; wide market application prospects are realized, and certain market requirements are met.

The invention discloses an anti-fibrillation finishing method for lyocell yarns, which comprises the following steps: (1) preparing a finishing liquid; (2) continuously dipping: continuously dipping a single yarn into the finishing liquid to enable the yarn to uniformly absorb the finishing liquid; (3) controlling the liquid carrying rate: treating the yarns uniformly dipped in the finishing liquid through a flexible water absorption part under the condition of tension; (4) contact type drying: winding the yarn on the surface of a rotating drying heating part, and continuously and uniformly drying the yarn while outputting the yarn; (5) performing contact type baking: winding a single yarn on the surface of a rotating baking heating part, and performing continuous and uniform baking crosslinking treatment on the yarn while outputting the yarn; and (6) rolling, wherein the anti-fibrillation lyocell yarn is obtained. The fibrillation tendency in the yarn production and use process is effectively reduced, the cross-linking agent material is efficiently and fully utilized, and the effects of ultralow preparation cost and high fiber cross-linking quality are achieved.

The invention discloses a jig dyeing process for preventing fibrillation of a lyocell woven fabric. The method comprises the following steps: singeing, desizing and bleaching lyocell grey cloth; preparing a dyeing working solution which comprises a dye, an anti-wrinkle agent, anhydrous sodium sulphate and sodium carbonate, uniformly mixing the working solution, and carrying out first-step jig dyeing on the pretreated lyocell fabric; preparing an anti-fibrillation working solution which comprises an anti-fibrillation cross-linking agent, a leveling agent and a dispersing agent, stirring the solutions at a high speed to prepare a stable suspension, adding the stable suspension into the dyeing working solution, and starting second jig dyeing after heating; and carrying out water washing, soaping, softening and drying on the treated lyocell woven fabric. The jig dyeing process is suitable for continuous long vehicle production of the lyocell woven fabric and the blended fabric of the lyocell woven fabric, through the one-bath two-step dyeing process, the effect of preventing fibrillation can be achieved, meanwhile, the utilization rate of the dye can be increased, the risk that the lyocell woven fabric is slightly dyed and dyed excessively is avoided, and the jig dyeing process has a very large application prospect.

The invention belongs to the technical field of textile dyeing methods, and particularly relates to a tension-free anti-fibrillation dyeing method for lyocell blended yarn. The tension-free fibrillating-resistant dyeing method of the lyocell blended yarn comprises the following steps: preparing a bobbin-free loose yarn bundle, namely loosely winding lyocell pure spinning or blended yarn into tension-free yarn bundles of which the weight is 0.5-1.5 kg by adopting an integrated chuck bobbin, and meanwhile, wrapping the tension-free yarn bundles with knitted sock legs; according to the tension-free loose yarn bundle filling, a cross-shaped lifting chain is matched with a yarn bundle grate, staggered filling shaped like a Chinese character'pin 'is achieved, and the loading rate ranges from 90% to 120%. The tension-free one-bath dyeing / cross-linking comprises the following steps: pre-treating the filled tension-free loose yarn bundle, performing dyeing and cross-linking through a one-bath two-step method, and finally performing soaping, hot water washing, color fixation / softening one-bath treatment and radio frequency drying. According to the tension-free antifibrillating dyeing method for the lyocell blended yarn, dyeing is uniform, the color difference is small, and the percent of pass is increased.

The invention relates to the technical field of AGV intelligent transportation, and discloses a lyocell fiber raw material intelligent transportation method and system based on AGV trajectory planning, and the method comprises the steps: obtaining a collision-free path of an AGV from an initial position to a target position through employing a self-adaptive target guidance RRT random search algorithm; deleting redundant nodes of the collision-free path, and fitting the path by adopting an NURBS curve to obtain a fitted path; segmenting the fitting path according to the curvature value of the fitting path and a preset segmentation number; calculating the speed constraint of each segment point in combination with the resultant gravity center and curvature value of the AGV and the carried raw material; and finally, performing acceleration and deceleration planning on each segmented path when the AGV moves along the fitting path by using an S-shaped speed curve to obtain motion control parameters of the AGV, and controlling the AGV to transport raw materials along the fitting path. According to the method, the optimal track planning of the AGV for transporting the Lyocell pulp raw material can be realized, the path accuracy and the transportation stability of the trolley for transporting the large-weight pulp raw material are ensured, and the continuity of Lyocell production is ensured.

The invention discloses a method for rapidly determining the swelling property of pulp for lyocell fibers and a centrifugal device, and relates to the field of pulping and papermaking and the field of spinning. The swelling property of the pulp for the lyocell fiber is represented by measuring the ratio of the mass of an NMMO solution retained in the pulp to the absolute dry mass of the NMMO solution after a low-concentration NMMO / dissolving pulp mixed solution is subjected to centrifugal treatment under a certain swelling condition under a certain centrifugal condition. The detection method provided by the invention is rapid, efficient and stable, the NMMO swelling properties of the dissolving pulp for different lyocell fibers can be compared by using a simple centrifugal device, the difficulty degree of the dissolving pulp for absorbing the NMMO solution to the maximum extent is reflected macroscopically, and the swelling property of the pulp in a lyocell fiber production dry process is effectively evaluated.

The invention relates to the field of fiber production and quality prediction, in particular to an intelligent production scheduling and quality prediction method and system for lyocell fibers, and the method comprises the following steps: generating a batching rule table of the lyocell fibers by using a central batching method according to the polymerization degree requirement and batching principle of the lyocell fibers, generating an inventory table in combination with an inventory list of the pulp raw materials; a production plan is made based on the inventory table, so that a stock solution workshop worker prepares the Lyocell fiber pulp porridge according to the production plan; and constructing a relation model of the raw material attributes, the process parameters and the quality of the pulp porridge by using the two-stage quality prediction model to realize quality prediction of the Lyocell fiber pulp porridge. According to the method, intelligent production scheduling of the lyocell fibers can be realized based on a central batching method and inventory data, whole-course tracking from raw materials to swelling products is realized, then the quality prediction of the lyocell fiber pulp porridge is realized by using the two-stage quality prediction model, and the quality prediction effect of the lyocell pulp porridge is improved.

The invention shows a lyocell fiber containing a matting agent whereby the matting agent comprises between 2 wt.-% and 5 wt.-% BaSO4 and less than 1 wt.-% TiO2, with respect to fiber weight, whereby the matting agent is incorporated in the fiber matrix in the form of particulates. The invention further concerns the use of said fiber for the production of a textile fabric and a textile fabric containing said fibers.

The invention discloses a processing method of a spinneret plate, which comprises the following steps: acquiring a plate material, and pretreating the plate material to obtain a blank of the spinneret plate; the blank is installed on an automatic punching machine tool, punching is conducted on the same position of the blank for at least three times, modification treatment is conducted after punching of the blank is completed every time, and the spinneret plate is obtained. The invention further discloses the lyocell spinneret plate. According to the spinneret plate, the same position in the spinneret plate blank is subjected to multiple times of punching and other operations, spinneret orifices formed through multiple times of punching are low in roughness and higher in size precision, meanwhile, the strength of materials in the orifices is enhanced, and the problems that in spinning production, yarn breaking and doubling are likely to happen, adhesion is likely to happen, and the plate replacement cleaning difficulty is large can be solved.

The invention discloses ink with high dye utilization rate for inkjet printing and a preparation method of the ink. The ink is prepared from the following components in percentage by mass: 1.7-3.7% of a cationic auxiliary agent; 3.5%-3.8% of a reactive dye; 22.9% to 28.5% of a viscosity modifier; 0.4%-0.7% of a surfactant; and the balance of deionized water. The method effectively solves the problems of long treatment flow, high consumption of chemicals and energy sources and large discharge amount of colored wastewater caused by low utilization rate of the reactive dye; the dye utilization rate reaches 98.5% or above, and the ink-jet printing ink can be widely applied to ink-jet printing of cellulose fiber fabrics such as cotton, hemp and lyocell; the fabric does not need to be subjected to pretreatment and water washing treatment; and the preparation method is simple, the treatment process is short, the ink stability is good, and the ink can be used in a high-speed printing mode with the injection frequency of 30 KHz.

The invention relates to the technical field of fiber production process simulation modeling, in particular to a Lyocell fiber spinning pulp porridge process simulation and quality prediction method and system.The method comprises the following steps that a simulation system is used for simulating the swelling process of cellulose in an NMMO solvent, and multiple sets of input and output data pairs are generated to construct a data set; a physical model of a simulation system is introduced into the gradient boosting tree algorithm to serve as regularization constraint, and an improved gradient boosting tree algorithm is obtained; and training an improved gradient boosting tree algorithm by using the data set to predict the quality of the Lyocell fiber spinning pulp porridge. According to the method, a slurry porridge quality prediction scheme based on simulation data and the improved gradient boosting tree algorithm is put forward for the first time, the slurry porridge research and development time and cost are greatly reduced, the improved gradient boosting tree algorithm integrates a physical model of a simulation system into a model training process by adding a physical constraint regularization item into a loss function, and the development efficiency of the slurry porridge is improved. The scientificity of a prediction result is enhanced, and the reliability of industrial application of the model is improved.

A preparation method of the blended modified antifibrillated lyocell fiber comprises three steps as follows: S1, a fibroin raw material and a cellulose raw material are dissolved in different NMMO / water mixed solvents respectively, and a fibroin solution and a cellulose solution are obtained; s2, transferring the fibroin solution and the cellulose solution into a reaction kettle, adding a modifier, vacuumizing to remove oxygen, heating to 50-85 DEG C, and stirring to react to obtain a composite spinning solution; the modifier is a small molecular compound containing an epoxy group or an oxygen-containing heterocyclic ring; s3, the composite spinning solution is extruded through a spinneret plate, fiber forming is conducted through a coagulating bath, drafting and winding are conducted, and the blending modified antifibrillated lyocell fiber is prepared. According to the invention, through in-situ modification of the lyocell fiber spinning solution, the prepared lyocell fiber has the intrinsic antifibrillation capability, the addition of an after-finishing process for treatment is not needed, meanwhile, the mechanical property of the fiber is improved, and the fiber is endowed with better skin-friendly property and wearing comfort.

The invention discloses sugarcane syrup suitable for lyocell fiber production and a preparation method and system of the sugarcane syrup, and belongs to the technical field of lyocell fiber production. According to the present invention, the sugarcane pulp for lyocell fiber production is prepared sequentially through the first high-concentration alkali treatment, the second low-concentration alkali treatment, the bleaching, the acid washing and the drying, and the processes are matched for use, such that the conditions are milder compared with the traditional pulping and papermaking cooking process and the oxygen delignification, the equipment requirement is low, the production energy consumption is low, and the operation is safe; according to the present invention, the raw material does not need to be crushed, the index of the finally prepared raw material can meet the Lyocell production requirement, the operation process is simple, the industrial application prospect is provided, the production system matched with the method is provided, and the industrial and continuous production of the sugarcane syrup suitable for Lyocell fiber production is achieved.

The invention relates to a method for industrially preparing a lyocell fiber spinning solution. The method comprises the following steps: step 1, preparing a first suspension with the cellulose concentration of less than or equal to 6wt%; step 2, increasing the concentration of cellulose in the first suspension to 10-12wt% in a manner of separating part of the solvent under pressure to obtain a second suspension; step 3, crushing and grinding the second suspension to obtain a third suspension; 4, inputting the third suspension into a film evaporator, controlling the temperature in the film evaporator, and dissolving the third suspension under a vacuum condition to obtain a spinning solution with the cellulose concentration of 11-13wt%; the method is a brand new thought for industrially preparing the lyocell fiber spinning solution, the hidden danger that dust is generated in the pulverization process of pulp can be eliminated, more sufficient and uniform swelling and more uniform dissolution can be synchronously achieved, the better dissolution effect is achieved, and the high-quality fiber spinning solution is obtained.

The invention discloses a pad dyeing process capable of preventing fibrillation of a lyocell woven fabric, which is characterized in that dye and a cross-linking agent are used for preparing dye liquor in one bath, and the dye and the cross-linking agent enter the fabric by padding the belt liquor. After being pre-dried, the fabric is padded with a fixation liquid, salt and alkali are brought into the surface of the fabric, and then the fabric is fed into a steaming box for steaming fixation. Meanwhile, the cross-linking agent is subjected to a cross-linking reaction in the fiber at the steaming temperature under the action of salt and alkali. By using the dichlorotriazine cross-linking agent, the antifibrillated lyocell woven fabric can be simply prepared through a rolling-drying-rolling-steaming process.

The invention relates to a skin-moistening antioxidant which is prepared by sequentially carrying out vegetable oil modification and polysaccharide modification on an antioxidant, in the process of preparing lyocell fibers by taking the skin-moistening antioxidant as an additive, the skin-moistening antioxidant is mixed with cellulose in a swelling stage, the dispersion uniformity of active matters in spinning slurry is improved, and the dispersion uniformity of the active matters in the spinning slurry is improved. The spinnability and the breaking strength of the fiber are improved. Meanwhile, the skin moistening antioxidant has good transdermal absorption performance, good solubility in spinning slurry and good compatibility with cellulose, the skin moistening antioxidant can be more uniformly and firmly attached to fibers in the fiber forming process, and the skin moistening performance, the oxidation resistance and the washing fastness of the fibers are improved.

The invention discloses a preparation method of long-acting heat-storage warm-keeping antibacterial lyocell fibers, and belongs to the technical field of regenerated cellulose fibers. The preparation method of the lyocell fiber comprises the following steps: step SS1: stirring, mixing and dissolving cellulose pulp, an NMMO organic solvent, zirconium carbide micro powder and nano biochar according to a certain mass ratio at a certain temperature, and then defoaming and filtering to obtain a homogeneous phase mixed spinning solution with the fiber forming solid content concentration of 8%; and step SS2, spraying the obtained mixed spinning solution in air through a spray head, immersing the mixed spinning solution in a low-concentration NMMO aqueous solution for solidification forming, and then drafting, washing, cutting, washing, oiling and drying to obtain the finished fiber. The temperature rise speed of the heat-storage warm-keeping cellulose fiber fabric is far higher than that of a conventional lyocell fiber fabric, the temperature difference can reach 13.5 DEG C when a light source irradiates for 10 min, it is indicated that light energy can be effectively converted into heat energy in the presence of zirconium carbide in fibers, and the good warm-keeping effect is achieved.

A smoking article filter including chemically unmodified lyocell fibers, and a smoking article including the same are provided. The smoking article filter including the chemically unmodified lyocell fibers includes lyocell tow including a plurality of lyocell fibers and a functional additive dispersed in the lyocell tow, wherein at least some of the plurality of lyocell fibers are not chemically modified by the functional additive, an FT-IR spectrum of the lyocell tow in which the functional additive is dispersed exhibits a first vibration peak, which is a vibration peak in a range of 1645 cm-1 to 1650 cm-1.

The invention discloses a lasting aromatic lyocell fiber of a biological enzyme immobilized temperature-sensitive microcapsule and a preparation method of the lasting aromatic lyocell fiber, and relates to the technical field of polyester fabrics. The method comprises the steps that firstly, a temperature-sensitive microcapsule of a three-layer structure is prepared, an inner core contains aromatic substances of lavender essential oil, ambrota ether and rosin glycerin ester, a middle layer enables N-isopropylacrylamide monomers to be polymerized to form PNIPAM temperature-sensitive hydrogel, and a shell is a nanocellulose crystal-polydopamine compound; then spinning by taking the NMMO aqueous solution containing the microcapsules as an inner layer solution and taking the NMMO aqueous solution containing the eucalyptus pulp as an outer layer solution by adopting a coaxial micro-fluidic spinning technology; and finally carrying out crosslinking treatment through a biological enzyme coagulating bath, wherein the coagulating bath contains an NMMO aqueous solution, horse radish peroxidase and a hydrogen peroxide solution with gradient concentration. The aromatic lyocell fiber prepared by the invention has excellent temperature-sensitive aroma release performance and washing fastness, and solves the technical problems that microcapsules in traditional aromatic textiles are easy to break and fall off and aromatic substances are easy to volatilize.

Provided are a smoking article filter and a smoking article. The smoking article filter includes a filter portion including lyocell tow including lyocell fibers and a phenol reducing material dispersed in the lyocell tow, and a filter portion wrapper wrapped around the filter portion and treated to be grease-resistant, wherein the filter portion wrapper has a basis weight ranging from 30 gsm to 180 gsm.

The present invention relates to the technical field of knitted fabrics, in particular to an antibacterial and anti-ultraviolet bio-based lyocell fabric and a preparation method thereof. The fabric comprises a three-layer composite structure connected by bio-based lyocell yarns: an outer layer is formed by weft-knitting a composite yarn formed by nylon-66 fiber and a first functional fiber, wherein the first functional fiber comprises bio-based lyocell fiber, thermochromic zinc oxide particles, nanosilver / graphene hybrid material, a hydrophobic pore switch polymer, and a cross-linking agent; an intermediate layer is formed by weft-knitting a second yarn formed by a second functional fiber, wherein the second functional fiber comprises bio-based lyocell fiber, temperature-sensitive microcapsules, a humidity-expanding gel, and is composed of an acrylic acid / sodium alginate interpenetrating network; a heat-conducting graphene sheet, and other functional additives; and a third functional fiber in the inner layer comprises bio-based lyocell fiber, Janus-type double-sided microcapsules, a porous graphene framework, a phase change material, and other regulators.

The invention discloses a preparation method of low-fibrillation Lyocell fibers, and belongs to the technical field of fiber preparation. The method comprises the following steps: obtaining Lyocell fiber filaments; the Lyocell fiber filaments are cut off, and Lyocell short fibers are prepared; lyocell short fibers are subjected to lapping forming and fiber web crosslinking treatment, and a Lyocell fiber web is obtained; after the Lyocell fiber web is subjected to post-treatment, the low-fibrillation Lyocell fiber is obtained, and the value range of the fineness of the low-fibrillation Lyocell fiber is 1.2 dtex-1. 6 dtex; the low-fibrillating Lyocell fiber is initially worn for more than or equal to 200 times, and the variable coefficient is less than or equal to 40%; the low-fibrillated Lyocell fiber has a rising trend along with the increase of the placement time, and the maximum value of the number of wet wear times is 800-1200; the initial pH value range of the low-fibrillating Lyocell fiber is 8-11, and the pH value of the low-fibrillating Lyocell fiber is greater than or equal to 6 in the shelf life. The Lyocell fiber prepared by the method has the advantages that the wet wear value of the cross-linked fiber is increased along with the increase of the placement time, the production energy consumption is low, the shelf life is long, the application performance is excellent, and the like.

The invention discloses a bamboo pulp lyocell fiber production method, which comprises: (1) preparing a bamboo dissolving pulp, loading bamboo chips into a pot, preheating, raising the temperature in the pot to 110-130 DEG C, introducing medium-pressure steam, rapidly raising the temperature in the pot to 160-170 DEG C, injecting a pre-hydrolysis liquid formed by mixing hot water and an acidic catalytic auxiliary agent from the bottom of the pot, and carrying out thermal insulation at a temperature of 165-175 DEG C for 30-120 min; and (2) dissolving NMMO, namely mixing the dissolving pulp prepared in the step (1) with an NMMO aqueous solution, mechanically stirring and uniformly mixing for 10 minutes at 90 DEG C, then carrying out vacuum dehydration, gradually raising the temperature to 105 DEG C from 90 DEG C, starting timing when the temperature is raised to 105 DEG C, and dissolving for 40 minutes. According to the production method and the production equipment of the bamboo pulp lyocell fiber, the pentosan content can be effectively reduced, the reaction uniformity can be improved and the preparation requirements of the bamboo-based lyocell fiber can be met through the specific preparation method and the processes such as steam preheating and temperature rising combined with liquid-phase extraction and prehydrolysis.

The invention belongs to the technical field of cleaning cloth, and particularly relates to cleaning towel cloth made of a degradable material and a preparation method of the cleaning towel cloth. Uniformly mixing cellulose pulp, an N-methylmorpholine-N-oxide aqueous solution, the modification liquid and a fixing agent to obtain a fiber spinning solution, and preparing modified lyocell fibers by utilizing the fiber spinning solution; the modified lyocell fibers and cotton fibers are spun through compact spinning to obtain blended yarns, and then the blended yarns are used for weaving to obtain the cleaning towel cloth made of the degradable material. The modified liquid is prepared from the following raw materials: quaternized carboxymethyl chitosan, modified nano silicon dioxide, polyvinyl alcohol and deionized water; the cleaning towel cloth provided by the invention not only has relatively good water absorption performance, but also has excellent wear resistance, breaking strength and antibacterial performance, and also keeps good biodegradability at the same time.

The invention discloses a preparation method of plateau fibrillated Lyocell fibers, and belongs to the technical field of cellulose fiber preparation. The preparation method comprises the following steps: step SS1: adding propyl gallate, a crystallization promoting agent and a delustering agent into a solvent NMMO with the mass concentration of 65 + / -5%, and stirring and dispersing to obtain a mixture A; step SS2, adding wood pulp into the mixture A, and stirring to obtain a mixture B; step SS3, heating the mixture B, and carrying out reduced pressure evaporation dehydration until the cellulose is completely dissolved, so as to obtain a spinning solution with the cellulose concentration of 7-11wt%; and step SS4, extruding the spinning solution from the spinneret plate, cooling in a coagulating bath, drafting and forming to obtain the plateau fibrillated Lyocell fiber. According to the preparation method of the plateau fibrillated Lyocell fiber, the technical problems that plateau fibrillated fabric is tedious in processing flow, long in processing time, serious in scratching and large in influence on fabric quality are effectively solved.

The invention relates to the technical field of textile, in particular to lyocell fiber and polyester fiber blended yarn and a preparation method and application thereof, and aims to solve the problems that the prepared jean fabric is easy to fluff and pilling, the aesthetic property and the service life are affected, the skin-friendly performance and the antibacterial performance need to be improved, and the service life of the jean fabric is affected due to poor wear resistance of the existing blended yarn. The requirements of people on the high-quality jean fabric cannot be met; according to the preparation method, the proportion of the modified polyester fibers to the lyocell fibers is reasonable, and the advantages of the modified polyester fibers and the lyocell fibers are fully exerted, so that the prepared blended yarn is excellent in hygroscopicity, breathability, shape retention, wear resistance, antistatic property, antibacterial property and the like, excellent in comprehensive performance and suitable for popularization and application. The method is suitable for producing fashionable and environment-friendly denim fabric, the quality and functionality of the denim fabric can be improved, the requirements of people for high-quality denim fabric are met, and the method has wide market application prospects.

The invention provides a preparation method of a lyocell and polyester interwoven fabric, which is characterized in that the preparation method comprises preparation and dyeing and finishing processes of a lyocell polyester fabric, and the dyeing and finishing processes comprise a lyocell anti-fibrillation treatment process, a polyester dyeing process and a lyocell dyeing treatment process; wherein the lyocell anti-fibrillation treatment process comprises the following steps: adding an anti-fibrillation aid KR-6347 according to 1%-4%, then adding anhydrous sodium sulphate, treating for 8-15 minutes, heating to 60-70 DEG C, adding 10-25 g / L sodium carbonate, continuing for 30-50 minutes, then cooling, draining water and cleaning. The lyocell terylene fabric is woven into knitted single jersey through knitting equipment in a yarn matching mode of separating lyocell terylene, separating lyocell and spandex. The fabric structure and the dyeing and finishing process are reasonable, the fibrillation degree of the fabric is greatly reduced through the dyeing and finishing process, the fastness to washing is high, and the breathable effect of the fabric is better under the wet condition after dyeing and finishing.

The invention discloses lyocell spinning equipment which comprises a coagulating bath tank used for containing coagulating bath liquid; at least partial section of the wire guide pipe horizontally extends, one end of the wire guide pipe is provided with a liquid inlet communicated with the coagulating bath tank, and the other end of the wire guide pipe is provided with a wire outlet; the spinning nozzle is arranged above the coagulating bath tank, a spinning opening of the spinning nozzle faces a tank opening of the coagulating bath tank, and tows sprayed out of the spinning opening enter the coagulating bath tank to be preliminarily coagulated, then enter the yarn guide pipe to be coagulated and then are pulled out of a yarn outlet of the yarn guide pipe. According to the invention, through the cooperation of the coagulating bath tank, the spinning nozzle and the wire guide pipe, the optimized design of the spinning equipment is realized, the spinning nozzle sprays the fibers into the coagulating bath tank for preliminary solidification, then the tows enter the wire guide pipe, and the horizontal extension section of the wire guide pipe prolongs the retention time of the fibers in coagulating bath liquid, so that the fibers are ensured to be fully solidified; and the mechanical property and the quality consistency are improved.