2693results about "Yarn" patented technology

The invention relates to the technical field of textile machinery, and discloses a covering yarn machine spindle speed and twist control system which comprises a data acquisition module, a global control module, an individual diagnosis module, a power execution module and a man-machine interaction module. The actual average speed of the whole machine is calculated by collecting the speed of each spindle in real time, and PID closed-loop control is carried out on the actual average speed and a set value, so that the systematic speed deviation of the whole machine is accurately corrected. Meanwhile, the individual diagnosis module calculates spindle difference signals of the speeds of the spindles and the average speed of the whole machine in parallel, time domain and frequency domain analysis is carried out on the signals, and hidden faults such as steady-state deviation, periodic fluctuation and transient impact existing in a single spindle are accurately recognized. And finally, the system carries out visual early warning through a human-computer interaction interface and provides a predictive maintenance instruction. According to the method, high-precision control of the twist and high consistency of products are achieved, an effective predictive maintenance mechanism is established, and the production quality and the intelligent level are remarkably improved.

The invention belongs to the technical field of textile materials, and particularly relates to an antibacterial regenerated wool blended yarn and a production process thereof.The antibacterial regenerated wool blended yarn is prepared from, by weight, 35 parts of regenerated wool fibers, 25-33 parts of LF tencel, 15-27 parts of cellulosic fibers, 8-12 parts of antibacterial chinlon 6 and 5 parts of an antibacterial complexing agent; according to the regenerated wool fiber prepared from the waste wool product through a synergistic improvement process of biological enzyme targeted cleaning and plasma etching, the natural properties of the wool fiber are reserved, and meanwhile, a surface pore structure capable of being combined with an antibacterial complexing agent is also formed; through a Z / S double-twist asynchronous spinning process, dynamic balance of a multilayer structure and hygroscopicity and strength of the blended yarn is achieved, and environment friendliness and commercial feasibility are both achieved.

The invention relates to a device and a method for preparing nanofiber core-spun yarn through batch coaxial electrostatic spinning. The device comprises a needleless dish-shaped spray head, an air blowing auxiliary device, a liquid supply device, an annular twisting device, a high-pressure generator, a negative-pressure air suction device, a winding device and an unwinding device. The core yarn penetrates through the axis of the needleless dish-shaped nozzle, the nanofiber generated by the needleless dish-shaped nozzle coaxially wraps the surface of the core yarn through the whole spinning device, and batch preparation can be achieved. The device is further provided with an air blowing auxiliary device and a negative pressure air suction device, under the air blowing effect of an air blowing nozzle and the adsorption effect of a negative pressure air suction shell, airflow force can be generated to promote jet flow to be further stretched in a straightened mode, under the common influence of electric field force and the airflow force, the jet flow is fully stretched, bending is reduced, and the service life of the jet flow is prolonged. Therefore, the nanofiber bundles can continuously cover the surface of the core yarn in a high-orientation state under the traction of the annular twisting device, and the continuous nanofiber core-spun yarn is formed.

The invention discloses a conductive yarn and a preparation method thereof, relates to the technical field of functional textile materials and composite conductive fiber preparation, and can solve the problems that an existing conductive yarn is poor in flexibility, insufficient in durability, prone to oxidation failure and difficult to integrate multiple functional performances. The preparation method comprises the following steps that S1, PBO yarn is soaked in a dopamine solution, a PDA modification layer is formed on the surface of the PBO yarn through a polydopamine self-polymerization reaction, and the PDA modification layer provides a chelation site and a bonding interface for metal deposition; s2, the PDA modified PBO yarn obtained in the step S1 is subjected to chemical silver plating, silver is deposited on a PDA modified layer to form a continuous conductive layer, and conductive PBO core yarn is prepared; s3, carrying out melt blending and granulation on the low-dielectric-constant flame-retardant filler and thermoplastic polymer resin to prepare flame-retardant composite particles; and S4, spinning by taking the conductive PBO core yarn prepared in the step S2 as a core layer and a melt formed by melting the flame-retardant composite particles prepared in the step S3 as a skin layer to prepare the conductive yarn.

Provided are: a knitted fabric having excellent skin smoothness, heat retaining properties, and washability and wearing properties; and an excellent apparel comprising the knitted fabric. The present invention relates to a knitted fabric, and more specifically, to a knitted fabric having a single-side knitted structure in which courses of fibers (1) comprising short fiber yarns and courses of fibers (2) comprising long fibers are alternately and repeatedly present in the warp direction, the knitted fabric being characterized in that the ratio (D2 / D1) of the total fineness D2 of the fibers (2) to the total fineness D1 of the fibers (1) is in the range of 0.50-0.90, and the ratio (D2 / D1) of the total fineness D2 of the fibers (2) to the total fineness D1 of the fibers (1) is in the range of 0.50-0.90. The ratio (L2 / L1) of the filament length L2 of the fibers 2 to the filament length L1 of the fibers 1 per 100 wales is greater than 1.00.

The invention belongs to the technical field of textile, and relates to an efficient antibacterial fabric for preparing underwear and a dyeing and finishing method and application thereof.The provided antibacterial fabric is weft-knitted bird eye double-faced knitted fabric and is composed of polyester, cotton and modal fibers, the surface density is 180 g / m, surface yarn of the antibacterial fabric is hollow polyester fibers with special-shaped sections, and the surface yarn of the antibacterial fabric is hollow polyester fibers with special-shaped sections. The lining yarn is formed by weaving dacron and blended yarn according to the proportion of 2: 1. According to the method, dyeing and finishing of the antibacterial fabric, fabric weaving and ergonomic sewing are combined, the fabric which has efficient antibacterial performance, good moisture permeability and ultraviolet-proof performance and high color fastness is obtained, and the prepared antibacterial clothes are high in quick-drying performance, comfortable to wear and high in environmental adaptability.

The purpose of the present invention is to provide: a low-shrinkage fiber; a method for producing the low-shrinkage fiber; an air-blended yarn comprising the polytrimethylene terephthalate fiber; and a fabric comprising the air-blended yarn. The low-shrinkage fiber is substantially composed of polytrimethylene terephthalate, and can be used to produce a precursor for a fabric, which has a soft texture and a low shrinkage rate due to heat. The present invention is characterized in that 90 mol% or more of polytrimethylene terephthalate fibers are composed of trimethylene terephthalate repeating units, the boiling water shrinkage of the polytrimethylene terephthalate fibers is 5% or less, and the elastic modulus of the polytrimethylene terephthalate fibers at an elongation of 20% is 5 cN / dtex or less.

The invention discloses a novel textile material with eiderdown wrapped by rainbow yarn nanofibers and a preparation method. The novel textile material comprises skeleton fibers located at the axis, an eiderdown component with a heat preservation effect and a rainbow yarn nanofiber reinforcing layer wrapping the outer surface of the eiderdown component. The wrapping reinforcing layer is of a three-dimensional network structure formed by continuous or quasi-continuous nanofibers in a winding, interweaving and lap joint mode, so that stable compounding and structural shaping of down feather components and skeleton fibers are achieved under the condition that the down feather components and the skeleton fibers do not depend on adhesive fixation. The preparation method comprises the following steps: cleaning, drying and opening down for pretreatment; performing melt differential electrostatic spinning on the polymer melt under a high-voltage electrostatic field to form rainbow yarn nanofibers; the down flocs are introduced into the coating area through the framework fibers, so that the rainbow yarn nanofibers are deposited and wound to form a coating reinforcing layer; after being gathered and shaped and twisted into yarns, the yarns can be continuously dragged and wound. The novel textile material has spinnability, structural stability and long-acting thermal insulation performance, and is suitable for spinning, weaving and knitting processing.

The invention relates to the technical field of cashmere blended yarn preparation, and discloses near infrared ray absorption and emission fiber and cashmere blended yarn equipment which comprises a rack, a pre-carding unit and a main carding unit are arranged in the rack, and the pre-carding unit is communicated with the main carding unit through an air duct pipeline. The pre-carding unit and the main carding unit each comprise a cylinder and a working roller, a plurality of open grooves are formed in the side wall of the rack, sliding sleeves are installed in the open grooves, first wedge-shaped blocks are installed at the ends of the working rollers, an arc-shaped frame is installed on the rack, an electromagnetic mechanism is installed on the inner wall of the arc-shaped frame, and an iron shaft body is installed in the arc-shaped frame. According to the technology and equipment for absorbing and emitting the fiber and cashmere blended yarn through the near infrared rays, through transmission of the electromagnetic mechanism, the iron shaft body, the second wedge-shaped block and the first wedge-shaped block at the end of the working roller, online, dynamic and micro-adjustment of the carding gauge between the working roller and the cylinder is achieved; therefore, the non-uniformity of the fiber layer can be automatically adapted.

The invention provides a heat-storage warm-keeping down-locking layered fabric and a down jacket. The heat-storage warm-keeping down-locking layered fabric sequentially comprises a skin-friendly layer, a liner cloth layer and a heat-storage warm-keeping down-locking layer from inside to outside, and the heat-storage warm-keeping down-locking layer is prepared by napping a heat-storage warm-keeping fabric; yarns for weaving the heat-storage and warm-keeping fabric are heat-storage and warm-keeping fiber / hollow polyester fiber / wool fiber blended yarns; the heat-storage warm-keeping fiber comprises polyester and a heat storage agent, and the preparation method of the heat storage agent comprises the following steps: firstly loading a polyethylene glycol / nano molybdenum disulfide composite material by adopting porous silicon dioxide microspheres, then mixing with a mixture containing silica sol and nano metal silver, and performing vacuum drying to obtain the heat storage agent. The heat-storage warm-keeping down-locking layered fabric has excellent heat-storage warm-keeping effects, can lock down, has a good antibacterial effect, and has a very good application effect when being used as a lining fabric of a down jacket.

The invention relates to the technical field of fiber reinforcement, and discloses a melt impregnation weaving process of a flame-retardant fiber reinforced thermoplastic filling rope, the melt impregnation weaving process comprises fiber pretreatment, melt impregnation, multi-stage stretching setting, weaving forming and post-treatment, through the synergistic effect of plasma activation and nano flame-retardant pretreatment, the fiber surface activity and the flame retardant binding force are improved, and the flame-retardant fiber reinforced thermoplastic filling rope is obtained. Meanwhile, a segmented temperature control melt impregnation process is combined, so that the resin is ensured to form a uniform and complete coating layer on the surface of the fiber monofilament, the problems of weakening of interface bonding and non-uniform flame-retardant distribution in a traditional process are solved, and the flame-retardant efficiency and mechanical reliability of the filling rope are improved; a dynamic mathematical model of the tension gradient and the traction speed is established, the fiber crystallization orientation process is controlled, and the internal stress concentration phenomenon is eliminated; in combination with a dynamic tension compensation mechanism during weaving forming, the weaving tightness of the coating layer is corrected in real time, and the dimensional stability and the anti-fatigue performance of the filling rope under the complex load are guaranteed.

The invention discloses a high-strength wear-resistant yarn and a manufacturing method thereof, and belongs to the field of spinning, the manufacturing process sequentially comprises the steps of opening, carding, drawing, roving and spinning, the raw materials used for opening comprise 70 wt% of aramid fiber and 30 wt% of cotton; in the spinning procedure, single yarns are twisted firstly, then two single yarns are plied to obtain plied yarns, the twist degree of the single yarns is 900-950 twists / m, the two single yarns have the same twist direction, and the single yarns and the plied yarns have opposite twist directions; and carrying out heat setting treatment on the plied yarn to obtain the high-strength wear-resistant yarn. Aramid fibers and cotton fibers in a specific proportion are selected as spinning raw materials, single yarns with specific twist are made and then reversely twisted to form plied yarns, finally, internal stress of the yarns is eliminated through heat setting treatment, the twist is stabilized, creep deformation in use is reduced, and the prepared yarns can be used in the industrial field, daily supplies, outdoor equipment and other products needing high wear resistance and have wide application prospects. The fabric is comfortable and soft, and the durability is improved.

The invention discloses a phase spinning fancy yarn and a production device thereof, and belongs to the technical field of spinning. The phase spinning fancy yarn is formed by a base yarn section and a wave-shaped yarn section in a staggered mode, the wave-shaped yarn section is of a conical transition structure with the thick middle and the two gradually-thin ends, and the key improvement is that the base yarn section and the wave-shaped yarn section are equal in linear density. The production device comprises a phase spinning mechanism arranged between a front drafting device and a yarn guide mechanism, the phase spinning mechanism comprises a driving wheel, a driven wheel and a circular ring belt, and yarn strands wind two edge strips of the circular ring belt in an S shape; the second driving device drives the driving wheel to rotate; the control unit controls all the components in a coordinated mode. The yarn diameter change is formed under constant-speed feeding through the periodic change of friction force, the problems that traditional bunchy yarn is uneven in twist, low in strength, much in hairiness and difficult in yarn density control are effectively solved, and the yarn quality and the weaving performance are remarkably improved.

The invention discloses a high-strength flame-retardant aramid fiber and biomass fiber blended yarn and a preparation method thereof, and relates to the field of functional textile materials.The preparation method comprises the steps that S1, aramid short fibers are subjected to in-situ silicon dioxide implantation pretreatment; s2, preparing aramid card slivers and biomass short fiber card slivers; s3, the aramid fiber card slivers and the biomass short fiber card slivers are mixed and drawn, the aramid fiber filaments and the outer wrapping fiber slivers are converged, covering yarn is formed through a twisting device and collected through a spun yarn guide hook, and blended yarn is obtained. Through modification of the aramid short fibers and combination of core-spun yarn structure cooperation of the core layer aramid filaments, the outer wrapping layer aramid short fibers and the biomass short fibers, the spinnability is greatly improved, the end breakage rate is reduced, the bottleneck that strength and comfort of traditional blended yarn are difficult to consider at the same time is broken through, and synergistic interaction of the flame retardant performance is achieved; and the yarn can still maintain a stable protection function in an extreme environment, so that high strength, flame retardance and skin-friendly comfort are considered, and the application scene of the functional blended yarn is widened.

The application discloses a kind of bundled biaxial skin-core structure tensile yarn spinning processes, specifically including the following steps, step S1: one low modulus high elongation fiber filament one and one low modulus high elongation fiber filament two are unwound by active feeding roller, and are respectively fed into lower layer hollow spindle center tube one and lower layer hollow spindle center tube two, as two core filaments;Step S2: high modulus low elongation fiber filament one is wrapped on the surface of the core filament in positive helical line configuration at lower layer guide hook one;High modulus low elongation fiber filament two is wrapped on the surface of the core filament in reverse helical line configuration at lower layer guide hook two;Form biaxial skin-core structure covering yarn system, and pass through upper layer hollow spindle center tube;Step S3: at upper layer guide hook, the fiber filament yarn with excellent elastic elongation wound on upper layer hollow spindle is bound to the surface of the biaxial skin-core structure covering yarn system with low spiral covering density, to form bundled biaxial skin-core structure tensile yarn.

A textile fabric is provided, including: a main body and at least one membrane. The main body includes two surfaces opposite to each other, and each of the two surfaces has a surface texture being concave and convex. The at least one membrane is coveringly partially disposed on one of the two surfaces and is concave and convex according to the surface texture. Therefore, the at least one membrane has an appearance corresponding to the weaving pattern, and the woven textile has good toughness, is waterproof and is not easily damaged, which solves the problems of a conventional woven textile such as insufficient structural strength and poor durability.

The invention belongs to the technical field of thermal protection materials, and provides a temperature sensing array based on fabric type flexibility, a preparation method and a spinning solvent. The preparation method comprises the following steps: S1, forming a polymer precursor through a spinning forming process to obtain an initial fiber; s2, performing twisting forming on the initial fibers to form twisted fibers; s3, the twisted fibers are subjected to curing treatment and pyrolysis treatment, and sensing yarn is obtained; s4, the sensing yarn is integrated on the flexible ceramic fiber cloth, and the flexible ceramic fiber cloth with the sensing array ceramic temperature-sensitive yarn is obtained; s5, performing laser local heating on the wire connection position of the sensing array to prepare a conductive electrode; and S6, selecting a wiring mode according to the conductivity and the target test temperature, and identifying a real-time temperature field according to the temperature resistance characteristic. Array integration of the woven thermal protection material can be realized through a weaving process.

A weft yarn for an artificial ligament (1), a weft yarn preparation method, and an artificial ligament (1). The artificial ligament (1) is of a round rod structure; a first woven part (102), an in-joint free filament part (103), and a second woven part (104) which are sequentially connected are formed in the round rod structure in the axial direction thereof; the in-joint free filament part (103) comprises a plurality of weft yarns (201), and the weft yarns (201) extend in the axial direction of the round rod structure; and each weft yarn (201) has a fineness of 1000 D-3000 D / 1-100 F, and a mechanical strength of 75-300 N. By increasing the mechanical strength of a single yarn formed in the in-joint free filament part (103) of the artificial ligament (1), the number of yarns in the in-joint free filament part (103) is decreased. The present invention can eliminate a knee joint synovial membrane inflammatory response caused by chippings of the artificial ligament (1) in the reconstruction process of the artificial ligament (1), reduce the degree of contact adhesion between the in-joint free filament part (103) and the tissue, reduce the probability of adhesion, and solve the clinical problems of the inflammatory response and the prolonged surgery time which are caused by difficult removal due to adhesion of the free filaments and the tissue in the revision surgery.

The invention belongs to the field of textile dyeing and finishing, and particularly relates to a functional hollow covering yarn and a preparation method and application thereof. The method comprises the following steps: pretreating textile fibers; preparing a functional additive solution; finishing the auxiliary agent and the fibers by adopting a supercritical CO2 process to obtain functional fibers; twisting the functional fibers and the water-soluble fibers into covering yarns; and dissolving the water-soluble fiber to obtain the functional hollow core-spun yarn. The problems that a traditional technology is single in function, poor in environmental protection performance and unstable in structure are solved, and the product has excellent physical performance (breathability, quick drying, fluffiness and the like) and multiple sanitary functions and is suitable for the field of functional fabric.

The utility model discloses a yarn with antibacterial, moisture-absorbing and quick-drying functions and a processing system thereof, and relates to the technical field of textile functional yarn production, the yarn comprises an antibacterial natural fiber core yarn and a moisture-absorbing and quick-drying coating layer, the moisture-absorbing and quick-drying coating layer comprises a natural fiber strip and a water-repellent natural fiber strip; the natural fiber strip and the water-repellent natural fiber strip are drawn to form a wrapping belt, and the wrapping belt is wound into a barrel shape in the width direction and wraps the outer peripheral side of the antibacterial natural fiber core yarn. The yarn can be made of all-natural plant fibers, can resist bacteria for a long time, has moisture absorption and quick drying performance, meets the use requirements of environmental protection, washing resistance and good wearing comfort, and has the advantages of being easy and convenient to process and manufacture.

The invention provides a skin-core structure moisture power generation yarn, the yarn at least comprises a metal core layer, a wrap yarn layer and a conductive coating, the wrap yarn layer comprises lithium chloride doped polyvinyl alcohol fibers and tightly wraps the periphery of the metal core layer through conjugate electrostatic spinning, and the conductive coating is nano conductive silver paint. And the conductive coating is not in direct contact with the metal core layer. The preparation method comprises the following steps: firstly, adding lithium chloride powder into deionized water, stirring at normal temperature until complete dissolution, then adding polyvinyl alcohol powder, heating and stirring until complete dissolution, standing and defoaming to prepare a wrap yarn layer spinning solution; performing conjugate electrostatic spinning on the prepared skin layer spinning solution to form nanofiber wrap yarn on the outer layer of the metal core; nano conductive silver paint is sprayed on the surface of the wrap yarn layer, and the wrap yarn layer is dried in the air. The yarn has good flexibility, and has excellent surface waterproof and moisture permeable performance, stability and reusability while forming stable output current and voltage.

The invention belongs to the technical field of light-weight high-strength aramid fibers, and particularly relates to a light-weight high-strength aramid fiber composite cord fabric and a production method thereof.According to the light-weight high-strength aramid fiber composite cord fabric and the production method thereof, by designing a yarn guide component with the proper roughness range and the twisting speed, friction of the yarn guide component to fibers is reduced, and strength loss is reduced; a certain twisting direction, twisting degree ratio and twisting tension of the A yarn and the B yarn are designed, so that the A yarn and the B yarn contribute the maximum strength at the same time. Therefore, on the premise that the specification of the cord fabric is not changed, the breaking strength of the aramid fiber composite cord fabric is improved.

The invention discloses a production method of environment-friendly untwisted yarn, which belongs to the field of spinning and comprises the following steps: S1, single yarn warping: arranging a certain number of single warp yarns in order, and winding the single warp yarns on a warping beam; s2, sizing: adding sizing agent into the yarns through a sizing machine for sizing, or adding sizing agent into the yarns through a bobbin dyeing machine for sizing; s3, bobbin making: winding the sized yarn on a bobbin by using a bobbin making machine to make a cheese package meeting the requirements of a doubler winder; s4, doubling: changing the cheese package of the bobbin making machine into the package of a doubling winder; s5, untwisting the single yarn: feeding the single yarn packaged by the doubling winder into a two-for-one twister; s6, weaving: making the untwisted yarns into a semi-finished product through a weaving machine; s7, desizing: adding desizing enzyme or a desizing agent into the semi-finished product, and desizing by using a desizing machine; and S8, post-treatment: treating the desized semi-finished product to obtain a finished product. According to the method, the untwisted yarn can be produced without using water-soluble yarn or water-soluble silk, and the method is more energy-saving and environment-friendly and lower in production cost.

The invention discloses a woolen spinning production process for cashmere and protein fiber blended yarn. The woolen spinning production process comprises the steps of raw material selection, wherein cashmere fibers and protein fibers are selected; the raw material pretreatment comprises wool mixing treatment of cashmere fibers and pretreatment of protein fibers; the pretreatment agent is prepared from deionized water, a penetrating agent, an antistatic agent, a silicon-based softening agent, cocamidopropyl hydroxysulfobetaine and waterborne polyurethane; in the opening picking process, two times of cotton cleaning are adopted; a carding process: carding the mixed fiber cotton rolls by adopting a carding machine to prepare mixed fiber strips; and a spinning process: spinning by using a mule spinning device. According to the woolen spinning production process for the cashmere and protein fiber blended yarn, the problems of damage to protein fibers, uneven mixing and the like during cashmere and protein fiber blending can be solved through wool mixing treatment of the cashmere fibers and pretreatment of the protein proportion, the yarn quality and the production efficiency are improved, and the production cost is reduced.

The present invention relates to an adhesive composition for a polyester tire cord, a method for preparing a polyester tire cord, and a tire cord comprising the same, according to the present invention, when the polyester tire cord is prepared, the adhesive composition can be used for manufacturing a polyester tire cord, according to the present invention, the binding force between polyester fibers and a first treatment liquid can be increased by treating with the first treatment liquid containing a salt containing an anionic functional group, and then the crosslinking density can be increased by treating with a second treatment liquid containing an isoprene rubber latex, thereby not only having excellent high-temperature adhesive force, but also having excellent water resistance. And no harmful substances are used, so that the environment-friendly property is realized. In addition, uniform adhesion of the processing liquid is achieved by minimizing the influence caused by the external environment, thereby reducing the manufacturing manufacturability and the production cost. The polyester tire cord prepared as above can exhibit high heat-resistant adhesive force, rubber coverage, and excellent heat resistance characteristics.

The invention relates to the technical field of layered composite fabrics, in particular to a flame-retardant-fiber-based multilayer flame-retardant composite fabric for an aircraft cabin and a preparation method of the flame-retardant-fiber-based multilayer flame-retardant composite fabric. The preparation method comprises the following steps: reacting acrylic acid with DOPO to prepare modified DOPO; reacting the epoxy POSS with the modified DOPO to prepare a composite flame retardant; reacting the hydrophilic grafted polyamide with a composite flame retardant and amino-modified nano-montmorillonite to prepare modified polyamide; carrying out melt spinning and chopping on the modified polyamide to obtain flame-retardant fibers; the flame-retardant fibers are spun into flame-retardant yarns, then the flame-retardant yarns are spun into a fabric, and a surface fabric is obtained; the flame-retardant fibers and the polyester fibers are blended to obtain blended yarns, and then the blended yarns are spun into a fabric to obtain a bottom layer fabric; and compounding the surface layer fabric and the bottom layer fabric to obtain the composite fabric. The prepared composite fabric has excellent flame retardant property and antistatic property, and can be applied to aviation cabins.

The invention belongs to the technical field of textile, and particularly relates to a preparation method of a high-density bamboo joint drawn yarn, which comprises the procedures of oiling, pre-interlacing, drawing and sizing and main interlacing. An oil nozzle is adopted for oiling, the pre-interlacing air pressure ranges from 0.38 MPa to 0.45 MPa, a used pre-interlacing device is a uniform-section vertical plate, airflow spray holes are horizontally formed in the pre-interlacing device, a certain cross section of the pre-interlacing device passes through the airflow spray holes, the cross section is an Archimedes spiral, the polar angle is larger than 360 degrees and smaller than 450 degrees, the airflow spray holes are located in the Archimedes spiral (the polar angle is 180 degrees), and the airflow spray holes are communicated with the airflow spray holes. The airflow spraying holes face the center of the Archimedes spiral; groove-shaped wire guide hooks composed of U-shaped wire guide hooks and limiting blocks are adopted at an inlet and an outlet of the pre-interlacer. According to the method, the fastness and density of network nodes can be effectively improved, then the bamboo joint density is improved, and the prepared high-density bamboo joint drawn yarn has excellent mechanical properties and can show a high-density gap bamboo joint effect when being applied to conventional cloth.

The utility model discloses a feeding roller and a rotor spinning machine, and relates to the technical field of spinning. A plurality of bead groups are fixedly arranged on the outer side wall of the roller shaft, the bead groups are circumferentially and uniformly distributed around the axis of the roller shaft, and a spacing is formed between every two adjacent bead groups; the bead group comprises at least one first bead, and the first bead extends along the axis of the roller shaft; and in the circumferential direction of the roller shaft, the circumferential length of the interval is consistent with the circumferential length of one rib group. And finally, the nub effect of the prepared hemp-feeling yarn is better.