28results about How to "Less hairy" patented technology

The invention provides a modification method of a ramie fabric, which comprises the following steps: sequentially treating and modifying the ramie fabric by three stages of pectinase, complex enzyme comprising xylanase, hemicellulase, cellulase and laccase, and alkaline protease, so that hairiness on the surface of the ramie fabric is greatly reduced, and the scratchiness is greatly reduced. The wearing experience feeling of the textile taking the ramie fabric as the raw material is greatly improved.

The invention relates to a starch type impregnating compound and a preparation method and application thereof, the impregnating compound comprises an active component and water, the active component comprises the following raw materials in parts by weight: 45-65 parts of a starch-based film-forming agent, 5-10 parts of a plasticizer, 15-20 parts of a lubricant, 1-2.5 parts of an emulsifier, 5-8 parts of a coupling agent, 1-2.5 parts of a softening agent, 0.5-1.5 parts of a preservative and 0.02-0.05 part of a defoaming agent; wherein the starch-based film-forming agent is a composition of potato oxidized hydroxypropyl starch, starch octenyl succinate and modified starch in a mass ratio of 1: (1.1-1.5): (0.5-0.8); the lubricant is a composition of carnauba wax and hydrogenated soybean oil. The impregnating compound disclosed by the invention can effectively improve the wear resistance of low-twist yarns, reduce hairiness and enhance bundling property and weaving performance, and can be used for preparing glass fiber spinning spun yarns.

The invention is suitable for the technical field of spinning, and provides a special-shaped polyphenylene sulfide short fiber blended yarn for a hydrogen production diaphragm, the British system count of the blended yarn is 5-20S, and the blended yarn is made of polyphenylene sulfide short fibers with different special-shaped sections. The invention further provides a spinning method of the special-shaped polyphenylene sulfide short fiber blended yarn for the hydrogen production diaphragm. The spinning method comprises the steps of curing, blowing, carding, drawing, roving, spinning and spooling. The polyphenylene sulfide short fibers with different section shapes are subjected to mixed spinning, the specific surface area of the fibers is increased through the special-shaped fibers, the porosity is increased from the yarn end due to the fact that the shapes of the special-shaped section fibers are different, more small pores exist between the fibers in the yarn, meanwhile, the yarn body is more fluffy due to the low twist, the porosity is further increased, and therefore the specific surface area of the fibers is increased. The prepared yarn has the characteristics of good evenness, less hairiness, low twist and fluffiness, higher yield and the like, and the diaphragm prepared from the yarn has high efficiency of hydrogen production by alkaline water electrolysis.

The present application belongs to the technical field of glass fiber sizing agent, and particularly relates to an anti-creep glass fiber sizing agent and a preparation method thereof. The anti-creep glass fiber sizing agent comprises effective components and water, and the solid content of the anti-creep glass fiber sizing agent is 3-12%. The effective components comprise the following components according to weight percentage: maleic anhydride modified long-chain branched polyolefin wax 65.5-86.9 wt.%, coupling agent 5-10 wt.%, nucleating agent 1-8 wt.%, physical cross-linking component 5-12 wt.%, initiator 0.1-0.5 wt.%, and surfactant 2-4 wt.%. The present application can effectively solve the problem of insufficient anti-creep ability of the glass fiber reinforced polypropylene material in the prior art, and at the same time, the material has good mechanical properties and fatigue resistance, which plays an important role in improving the long-term dimensional stability of the polypropylene material.

The invention is suitable for the technical field of spinning, and provides a polyphenylene sulfide short fiber blended yarn for a diaphragm, the British system count of the blended yarn is 10-20 S, the blended yarn is made of polyphenylene sulfide short fibers of different specifications, the fineness of the polyphenylene sulfide short fibers is 0.89-6.67 dtex, and the length of the polyphenylene sulfide short fibers is 38-51 mm. The invention further provides a spinning method of the polyphenylene sulfide short fiber blended yarn for the diaphragm. The spinning method comprises the steps of curing, opening and cleaning, carding, drawing, roving, spinning and spooling. The polyphenylene sulfide fibers of different specifications are blended and spun, the yarn twist is properly reduced, the porosity is increased from the yarn end by means of the diameter difference and the length difference naturally existing among the fibers of different specifications, meanwhile, the yarn body is more fluffy due to the low twist, the porosity is further increased, and the yarn quality is improved. The yarn has the advantages of being good in evenness, little in hairiness, low in twist and fluffy, high in yield and the like, and a diaphragm prepared from the yarn has the advantages of being high in air tightness, high in ion permeability, high in porosity, small in pore and the like.

The utility model provides a vortex spinning device for producing bunchy yarn. The vortex spinning device comprises a cotton feeding roller, a cotton feeding leather roller matched with the cotton feeding roller, a rear roller, a rear leather roller matched with the rear roller, a middle roller, a middle leather roller matched with the middle roller, a front roller, a front leather roller matched with the front roller, a vortex spindle and a friction yarn storage roller. The cotton feeding leather roller is a special-shaped leather roller with a concave part; the vortex spinning device further comprises a main motor, a first servo motor, a second servo motor, a third servo motor, a fourth servo motor and a fifth servo motor, the main motor is in transmission connection with the front roller, the first servo motor is in transmission connection with the cotton feeding roller, the second servo motor is in transmission connection with the middle roller, and the fourth servo motor is in transmission connection with the fifth servo motor. And the third servo motor is in transmission connection with the rear roller. The vortex spinning device is used for producing slub yarn and has the advantages of being high in production efficiency and low in equipment cost.

The application provides a winding core spinning device based on a calculus principle and a method and application thereof. The device is provided with a negative pressure air suction port on a special-shaped plate, and a corresponding negative pressure airflow guide assembly is arranged above the negative pressure air suction port. Under the mutual cooperation of the diffusion flow guide hole and the negative pressure air suction mechanism, the spread fiber type short fibers with a certain width and uniformly distributed fiber height parallelism are obtained on the grid ring. Meanwhile, the short fiber sliver, core yarn and winding core yarn form a "y" shape structure in the winding core wrapping area. The core yarn self-rotation drives the short fiber sliver to be tightly wrapped and wound to the outer layer of the core yarn in the winding core wrapping area to form the winding core yarn. Then, the winding core yarn passes through the soft reinforcing winding core part, so that the wrapping layer is tightly attached to the yarn body under the action of temperature and pressure to form a good wrapping effect. The winding core yarn has a compact yarn body and a large core yarn proportion, solves the problems of small wrapping tightness, many wrapping exposed cores and low core yarn proportion of the core-spun yarn on the ring spinning machine, and greatly improves the yarn quality.

This invention relates to a blending process for hemp fiber and sorona fiber, belonging to the technical field of blending and processing of natural fibers and bio-based elastic fibers. The blending process for hemp fiber and sorona fiber of this invention includes the following steps: raw material selection → pre-spinning process → post-spinning process → packaging. This invention solves the problems of poor spinnability, high breakage rate, and stiffness and wrinkling in pure wet-spun hemp through specific proportions and wet spinning processes, achieving high-count, stable, and high-quality production. This significantly improves spinnability, enhances yarn quality, and greatly improves hand feel and comfort, achieving high elasticity and comfort to meet user needs.

The invention discloses a roving compact spinning buncher, comprising a buncher rod and two bunching blocks; the bunching block comprises a body, which is a wedge-shaped block, and comprises an A surface located at one side of the yarn inlet and a D surface located at one side of the yarn outlet, a horizontal surface on the body is the B surface, and a left-right symmetrical surface is the C surface; a yarn path channel is provided on the body, which runs from the A surface to the back surface, and the yarn path channel is a channel formed by a closed space curved surface on the inner surface, and the angle between the axis of the yarn path channel and the C surface is θ, and the angle between the axis of the yarn path channel and the B surface is β, and the yarn channel passes through the body from top to bottom and from left to right and gradually decreases, presenting a shrinking inverted trumpet shape. By arranging this buncher in the front drafting zone of the drafting, the yarn path of the roving conveying can be changed, so that the roving bundling effect is better, the weak twist zone at the front roller outlet is reduced, the roving strength is increased, the roving hairiness is reduced, and the yarn quality is improved.

The application discloses a kind of double-wrapped wool synthetic fiber high count high strength cotton spinning and its preparation method and application, belong to textile technical field.The method includes wool pretreatment, opening, carding, drawing, roving, spinning (add the first synthetic fiber filament), bobbin, doubling and twisting reverse wrapping (add the second synthetic fiber filament) and the like steps.The application adopts two synthetic fiber filaments to cross double-wrapped processing to wool or wool and synthetic short fiber blended yarn, and adopts positive and negative direction twisting direction combination in spinning and twisting process, effectively eliminates internal stress of yarn, eliminates yarn setting process.The prepared yarn is high in strength, has less hair, and even in evenness, can solve the problems of low production efficiency and poor yarn quality of high-count wool blended yarn, and is suitable for weaving processing of thin high-grade fabrics.

The invention relates to the field of worsted yarns, and particularly discloses a preparation process and equipment of a shell compact spun yarn, the process comprises the following steps: material selection, pretreatment of wool and tencel, multiple sliver mixing of wool and tencel, combing, 4-5 times of gilling, roving to obtain wool tencel roving, and mixing of the wool tencel roving and nylon filaments to obtain the shell compact spun yarn, and the fineness of each component is limited. The nylon filament is limited to be a water-absorbing particle attached nylon filament; the equipment comprises a vacuum gathering device, a drying device and the like. The prepared yarn has good texture, pilling resistance, strength and hygroscopicity.

The invention discloses a high-strength blended chemical fiber fabric and processing equipment thereof, and relates to the technical field of weaving equipment. The fabric comprises a base layer which is formed by weaving polypropylene fibers, diene elastic fibers, polyolefin elastic fibers and mohair fibers, the weight ratio of the polypropylene fibers is 35-40%, the weight ratio of the diene elastic fibers is 17-29%, the weight ratio of the polyolefin elastic fibers is 15-26%, and the weight ratio of the mohair fibers is 15-25%. The weight ratio of the mohair fibers is 12-26%; and the protective layer is positioned outside the base layer in a weaving manner. The protective layer is woven on the base layer, the protective layer is located outside to protect the base layer, and the protective layer is prepared from the polypropylene fibers and the functional nanoparticles, so that during use, the polypropylene fibers have relatively high wear resistance and high elasticity, wear can be greatly reduced, and the base layer can be better protected; the service life of the whole fabric can also be prolonged.

The invention provides a method for preparing a woven fabric from recycled fibers, which comprises the following steps: S1, opening a waste cotton woven fabric to obtain recycled cotton fibers with the length of 25-40mm, and carding, drawing and roving regenerated cotton fibers to obtain regenerated cotton short fiber roving; s2, the electrostatic spinning composite fiber bundles are arranged on a creel of a common spinning frame, the regenerated cotton staple fiber roving is arranged below the creel of the common spinning frame, the regenerated cotton staple fiber roving is fed through a horn mouth of a traversing gear, the regenerated cotton staple fiber roving is drawn, combined and twisted to be spun into core-spun yarn, the core material is the regenerated staple fiber roving, the covering material is the electrostatic spinning composite fiber bundles, and the core-spun yarn is obtained; and S3, weaving the covering yarn prepared in the step S2 into a fabric by adopting a plain weave. According to the method, the waste cotton woven fabric is subjected to opening, cotton carding, drawing, roving and electrostatic spinning, composite fiber bundles are made into the covering yarn, then the covering yarn is made into the fabric through the weaving technology, and the woven fabric with the good heat preservation effect is obtained.

The invention discloses a production process for combining viscose / flax mixed rotor spinning and filaments into plied yarns, and relates to the technical field of textile production, viscose fibers and flax fibers are mixed and then subjected to blowing, cotton carding and drawing to form mixed fiber strips, rotor spinning is performed to form rotor spinning, the rotor spinning is combined with viscose filaments on a doubling winder, and the rotor spinning and the viscose filaments are combined on a two-for-one twister to form the plied yarns; wherein the content of the viscose is 40%-46%, the content of the linen fibers is 33%-39%, the content of the viscose filaments is 15%-27%, and the specification of the piled yarn formed by combining the viscose / linen mixed rotor spinning and the filaments is viscose / linen / 55 / 4548.9 tex + 120DR. Viscose fibers with excellent hygroscopicity and cohesive force and flax fibers with large fiber rigidity and poor cohesive force are blended, the defect that flax is poor in spinning adaptability is overcome, quality upgrading of common open-end spinning is achieved, the plied yarn is compact in structure, little in hairiness and high in strength, the yarn is strong, moderate, soft, uniform and smooth, and the made fabric is elastic, soft, skin-friendly, sweat-absorbent, antibacterial, wear-resistant, good in breathability and good in breathability. And the air spinning product variety is enriched by the high-quality and high-end rank of summer and autumn clothes.

The invention discloses a reusable clean sock for a GMP (good manufacturing practice) medicine clean workshop, which is characterized in that for particles with the particle size of more than or equal to 0.5 micron, the dust generation amount in air does not exceed 500 counts per sock; the clean sock capable of being used repeatedly is formed by weaving covering yarn, and the covering yarn comprises polyester filaments and polyurethane stretch yarn. According to the covering yarn capable of being repeatedly used for the clean socks, the polyester filaments and the polyurethane stretch yarn are adopted, the production process of the polyester filaments and the polyurethane stretch yarn is continuous in the aspect of material selection, the filaments large in length are directly produced from a spinning machine, compared with short fibers, the filaments are smooth in surface, less in hairiness and small in dust generation amount, and the covering yarn is suitable for being used for the clean socks. And the fibers are continuous, so that the fibers are less broken or dropped, and the breaking strength is high.

The utility model discloses a multi-strand composite DTY (Draw Textured Yarn) differentiated production device which comprises a roller assembly, a heating and cooling assembly arranged at the downstream of a first roller, a yarn moving plate arranged at the downstream of the heating and cooling assembly and a yarn guiding assembly, and the roller assembly at least comprises the first roller, a second roller and a third roller. The second roller and the first roller are sequentially arranged in the spinning direction, the first roller is located below the second roller, the heating and cooling assembly is used for heating and then cooling POY filaments, the third roller is located on the downstream of the filament moving plate, and the fourth roller is located on the downstream of the filament moving plate. The yarn guiding assembly at least comprises a first yarn guider installed on the first roller, a first guide wheel arranged between the first roller and the heating and cooling assembly, a second guide wheel installed on the heating and cooling assembly and a second yarn guider installed on the yarn moving plate. According to the device, the number of yarn paths can be increased to achieve multi-strand yarn composite spinning, and therefore differentiated fibers are produced.

The invention discloses a textile process of polyester staple fiber warp woven cloth, and belongs to the technical field of textile woven cloth. Spinning of the polyester staple fiber yarn is improved, the strength unevenness of the yarn is reduced, hairiness is reduced, the strength of the yarn is improved, and the end breakage rate during weaving is greatly reduced; the drying-free sizing agent is used for sizing, a sectional warping machine is used for warping and slashing (not drying) to complete a warp beam at a time, the warp beam is directly fed to a water jet loom for weaving, the investment cost of slashing equipment, the labor cost and the steam cost are greatly reduced, the production cost is greatly reduced, and the energy consumption in the spinning process is reduced; the quality and the production efficiency of textile products are improved, energy conservation and environmental protection are realized, the cost is reduced, the efficiency is improved, and the additional value of the products is improved.

The invention is applicable to the technical field of spinning, and provides a hydrophilic polyphenylene sulfide short fiber and filament composite yarn for a diaphragm, the British count of the composite yarn is 10-20S, and the composite yarn is prepared by carrying out composite spinning on hydrophilic polyphenylene sulfide short fibers and hydrophilic polyphenylene sulfide filaments; the fineness of the hydrophilic polyphenylene sulfide short fiber is 0.89 to 6.67 dtex, and the length of the hydrophilic polyphenylene sulfide short fiber is 38 to 51 mm; the fineness of the hydrophilic polyphenylene sulfide filaments ranges from 66 dtex to 444 dtex. The invention also provides a spinning method of the hydrophilic polyphenylene sulfide short fiber filament composite yarn for the diaphragm, which comprises the following steps of: preparing the hydrophilic polyphenylene sulfide short fiber into hydrophilic polyphenylene sulfide short fiber roving through the processes of curing, blowing, carding, drawing and roving; and the hydrophilic polyphenylene sulfide short fiber roving and the hydrophilic polyphenylene sulfide filaments are subjected to a spinning process and a spooling process. The yarn prepared by the invention has the characteristics of uniform evenness, less hairiness, high strength, stable weaving tension, high production efficiency and the like.

An electronic-grade glass fiber cloth resistant to ion migration and a preparation method thereof, belonging to the field of glass fiber cloth. The preparation method comprises the following steps: winding the sized warp yarns on a warp beam for sizing; placing the sized warp beam on a loom, and interweaving the sized glass fiber cloth crude product according to the warp and weft density; desizing the glass fiber cloth crude product; sequentially subjecting the desized glass fiber cloth to water fiber opening treatment, primary drying, treatment liquid impregnation treatment, secondary drying, treatment liquid fiber opening treatment and tertiary drying to obtain an electronic-grade glass fiber cloth resistant to ion migration; wherein the treatment liquid contains an allyl epoxy polyoxyethylene polyether modified aminosilane coupling agent and a phenyltrimethoxysilane coupling agent in a mass ratio of 2‑3:1. The electronic-grade glass fiber cloth of the present invention has high interface bonding strength with the resin and good resin wettability, and the copper-clad laminate prepared thereby has good ion migration resistance and excellent heat resistance.

The invention discloses an aramid fiber and viscose fiber core-spun and wrapped AB double-filament composite yarn and a manufacturing process, and relates to the technical field of textile production, aramid fibers and viscose fibers are mixed to prepare carded cotton slivers, the carded cotton slivers are mixed and combined to prepare roving slivers, the roving slivers are fed and drafted on a ring spinning frame, and core yarn polyester filament yarns and wrapping yarn polyamide filament yarns are introduced to prepare the AB double-filament core-spun and wrapped composite yarn. The content of aramid fibers is 20-40%, the content of viscose is 10-30%, the content of polyester is 20-30%, and the content of The aramid fiber and viscose fiber core-spun and wrapped AB double-filament composite yarn is successfully produced through the process steps of raw material opening, carding, straightening, combining, drafting and core-spun and wrapped by two kinds of different wrapping fibers with large performance difference, high specific resistance and poor cohesive force, the aramid fiber and viscose fiber core-spun and wrapped AB double-filament composite yarn is high in strength, little in hairiness and compact in yarn body, the fabric is used as a fire-fighting, fireproof and flame-retardant tool, and the production cost is reduced. The fabric has the characteristics of high temperature resistance, fire resistance, high strength and wear resistance, and enriches the market of fire-fighting fireproof flame-retardant textiles.

The invention discloses an environment-friendly degradable disposable clean sock which is characterized in that for particles with the particle size larger than or equal to 0.5 micrometer, the dust generation amount of the disposable clean sock in air does not exceed 300 counts per sock; the disposable clean socks are formed by weaving polylactic acid filaments. The disposable clean socks provided by the invention are made of the polylactic acid filaments, so that the production investment of new materials can be reduced, the consumption of petroleum energy is reduced, and energy conservation and environmental protection are realized. Compared with a traditional polyester and PLA biodegradable agent, the influence on the environment after treatment is smaller, accumulation of plastic garbage and damage to an ecological system can be reduced, circulation in the nature can be achieved, and the PLA biodegradable material is an ideal and preferable green high polymer material. And in the aspect of material selection, the production process of the filaments is continuous, the long filaments are directly produced from a spinning machine, and compared with short fibers, the filaments are smooth in surface, less in hairiness and less in dust generation amount because the fibers are continuous, less in breakage or falling and high in breaking strength.

The utility model discloses a convenient computer jacquard of cleaning, include: computer jacquard, jacquard lower support wall, two cleaning devices, two collection devices, servo motor, gear no.

The invention belongs to the technical field of fabric spinning, and particularly relates to smooth and soft elastic yarn and a preparation method and application thereof. Skin short fibers of the yarn are one or more of natural fibers and chemical fibers in a blending mode, and the skin short fibers are made into rough yarn through a pre-spinning process. Yarn cores of the yarns are composite yarns of two or more of polyester fibers, modified polyester fibers, polyamide, spandex and polyolefin. The yarn core participates in core-spun production after being reversely twisted, the yarn is soft, the skin core is not prone to slipping when the whole yarn is woven, the yarn is smooth in surface and soft in hand feeling, fibers on the surface of the yarn are spirally arranged, and the yarn has the style similar to a mooring rope. The woven fabric is smooth and clean in cloth cover, soft in touch, comfortable and elastic, not prone to wrinkling when worn, capable of being worn without ironing after being washed, wide in fabric thickness range, suitable for being worn in four seasons of business and life of people, capable of meeting multiple requirements of comfortable body and face of people, and high-grade, comfortable and elastic.

The application provides a kind of bio-based polyamide fiber-based military blended yarn, its spinning processing method and application.The military blended yarn includes two compact spun yarns and two bio-based polyamide filaments;one compact spun yarn and one bio-based polyamide filament are twisted to obtain an initial twisted yarn;two initial twisted yarns are twisted to obtain a military blended yarn.The military blended yarn obtained by the method has high strength, good evenness and less hair, and can meet the requirements of military blended yarn.

The invention belongs to the technical field of Roman cloth, and particularly relates to superfine soft Roman cloth and a preparation process thereof.The superfine soft Roman cloth comprises a fabric body, the fabric body is prepared from, by weight, 52% of 90S high-count cotton, 42% of 40D / 24F chinlon and 6% of 20D spandex through a Roman double-faced cloth weave structure and a high-count and high-density weaving process, and the superfine soft Roman cloth has the advantages that the superfine soft Roman cloth is high in softness, good in softness and high in softness, good in softness and high in softness, good in softness and high in softness, good in softness and good in softness. The setting machine is arranged, an electric push rod drives a lifting frame to vertically lift, the two ends of the lifting frame are in rolling fit with guide rails through rollers, the stability and smoothness in the lifting process of a pressing roller are guaranteed, the blocking phenomenon is avoided, clamping mechanisms are arranged at the two ends of a setting mechanism, and synchronous clamping and tension control can be conducted on the edges of the two sides of a fabric body; the uniform stress of the fabric in the full width direction is ensured.

The invention relates to the technical field of spinning, and provides a heavy-twist high-count low-hairiness yarn production method and yarn, and the method comprises the following steps: S1, adopting a bale plucker, a cotton blender, an opener and a lap former to carry out an opening picking process; s2, carrying out a cotton carding procedure by adopting a cotton carding machine; s3, combing by adopting a drawing frame, a lap former and a combing machine; s4, a drawing frame and a roving frame are adopted for drawing and roughing; s5, a spinning machine is adopted for spinning, and the spinning machine is provided with a compact spinning device; s6, a vacuum high-temperature setting machine is adopted for conducting yarn steaming and setting on the cop obtained in the spinning procedure, two yarn steaming and setting cycles are conducted, the setting temperature is not lower than 100 DEG C, and the vacuum value is 250 mb; s7, a bobbin winder is adopted to conduct a spooling procedure on the bobbin yarn subjected to yarn steaming and shaping; s8, singeing treatment is carried out, and the temperature of a fire opening is higher than 1100 DEG C. By means of the technical scheme, orderly production of the heavy-twist low-hairiness yarn with the yarn count being 60-70, the twist coefficient being 520-610 and the hairiness index being 1.1-1.2 can be achieved.

The application provides a glass fiber sizing agent and a preparation method and use thereof. The sizing agent comprises 0.02%-0.5% of a pH value regulator, 0.1%-1.5% of a silane coupling agent, 0%-7.0% of a first film forming agent, 0.5%-4.0% of a second film forming agent, 0.02%-1.0% of a water resistance agent, 0.05%-0.8% of a lubricant, 0.01%-0.5% of an antistatic agent, and the rest is water. The glass fiber sizing agent can effectively reduce the glass fiber abrasion and broken filament, has good smoothness, high starting rate, excellent bundle property, slip property and antistatic property, has less hairiness during use, and the glass fibers are uniformly dispersed and distributed; the molding fluidity is excellent, the resin compatibility is good, the obtained composite material product has excellent appearance effect and mechanical property, can improve the interface bonding density and water resistance of the composite material, and has the advantages of reducing the generation of pores and bubbles during the water boiling process and the like.

The invention belongs to the technical field of blended yarns, and provides an antibacterial environment-friendly breathable blended yarn and a preparation method thereof. The blended yarn is prepared from the following raw materials: tencel fiber, linen fiber and modal fiber in a mass ratio of (25-30): (20-25): (20-25). According to the invention, the fiber variety causes little pollution to the environment, the organic combination of functional protection and environmental protection is realized, and the yarn is a green and environment-friendly yarn with a protection function; according to the invention, various fibers are reasonably selected for blending, and the proportion of each fiber is controlled, so that the environment-friendly, breathable, antibacterial and mechanical blended yarn with good mechanical properties is obtained; the blended yarn is good in evenness, detail and slub indexes, high in single yarn strength, compact in structure, good in wear resistance, little in hairiness and smooth in yarn, and fabric prepared from the blended yarn is high in quality and breaking strength.