449 results about "Filament yarn" patented technology

The invention discloses a skin-friendly antibacterial spinning yarn and a preparation method thereof, and relates to the field of spinning yarns. When the skin-friendly antibacterial spinning yarn is prepared, 3-amino-1, 2, 4-triazine and vinyl phosphonyl chloride are subjected to a reaction, and a phosphorus-nitrogen flame-retardant monomer is obtained; activating bamboo nano-cellulose with ammonium ceric nitrate, grafting a phosphorus-nitrogen flame-retardant monomer, and performing electrostatic spinning to obtain modified bamboo nano-cellulose coated fibers; dipping polyester filament yarns in dopamine hydrochloride and sodium hypochlorite in sequence to obtain modified polyester core yarns; the modified bamboo nano-cellulose wrapping fiber and the modified polyester core yarn are twisted through a ring spinning frame and then react with 3, 3 ', 4, 4'-benzophenone tetracarboxylic dianhydride, and the skin-friendly antibacterial spinning yarn is obtained. The skin-friendly antibacterial spinning yarn prepared by the method has excellent skin-friendly antibacterial property, flame retardance, aging resistance and mechanical property.

The invention discloses a polyester ITY yarn and a production method thereof. The method comprises the following steps: extruding a polyester melt from a spinning assembly under the control of two groups of metering pump frequency converters, cooling to obtain polyester monofilaments, oiling part of the polyester monofilaments through an oil nozzle, drawing and shaping through GR0 and a hot roller box to prepare FDY (Fully Drawn Yarn), and oiling the other part of the polyester monofilaments to prepare POY (Polyester Pre-Oriented Yarn); fDY (fully drawn yarn) is mixed with POY (pre-oriented yarn) in a pre-interlacing device through GR1 for pre-interlacing, then enters a main interlacing device through GR2 for main interlacing, and finally enters a winding machine through GR3 for winding to obtain ITY; before entering the pre-interlacing device, the tension of the FDY is 10-14 cN, the tension of the POY is 12-16 cN, the tension of the FDY is smaller than that of the POY, and the tension difference is 1-2 cN. According to the invention, conventional FDY production equipment is utilized, and a one-step method is adopted to prepare the super-imitation cotton ITY combined filament yarn with good moisture and air permeability.

The utility model discloses a yarn and knitted fabric for efficient short-process embedded spinning knitting, and relates to the technical field of spinning. Comprising a yarn core, outer wrapping part fibers are connected to the surface of the yarn core in a winding mode, and raw material fibers of the outer wrapping part fibers are one or a mixture of two or more of natural fibers, artificial fibers and synthetic fibers; the raw material fiber of the yarn core is pure yarn or blended yarn of filaments or short fibers.

A terry fabric includes a first side configured to exhibit absorbency capabilities and a second side configured to exhibit cooling capabilities. The first side can include a spun fiber loop including a plurality of pile warp yarn, and the second side can include a plurality of weft yarn and a plurality of ground warp yarn, wherein at least one of the plurality of weft yarn and the plurality of ground warp yarn includes synthetic filament yarn.

The invention discloses special cloth for a single-sided terry bath foaming towel and a weaving method of the special cloth. The terry cloth comprises a three-layer structure integrally woven by a warp knitting machine, wherein the three-layer structure comprises a base layer and 100D / 36F polyester filament yarn warp knitting chain weave; the binding layer is a 100D / 96F polyester filament chain stitch and penetrates through the substrate layer; the looped pile layer is of a vertical looped pile structure formed by 300D / 10F polyester filaments, the height of looped piles is 7-8 mm, and the density of the looped piles is 25-30 / cm; the thickness ratio of the base layer to the binding layer to the looped pile layer of the three-layer structure is 0.6: 1: 7. The three kinds of yarns with different thicknesses are combined to form a three-layer structure, the three-layer structure is directly formed through warp knitting, a traditional fuzzing roller is not needed for fuzzing, the upright performance of a looped pile is guaranteed, it is guaranteed that the looped pile does not generate monofilament breakage and is stable in structure, and the foaming performance and the weaving feasibility are balanced.

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.

The invention discloses a preparation method and application of a conductive fiber material with tensile negative resistance response. The preparation method comprises the following steps: S1, performing melt spinning on polyester to obtain polyester filaments; s2, performing drafting, false twisting and heat setting on the polyester filament yarns to form polyester tensile deformation grid yarns; s3, immersing the polyester tensile deformation grid yarns in a Tris buffer solution, and adding dopamine to polymerize the polyester tensile deformation grid yarns to form a polydopamine layer; s4, the polyester grid yarn with the polydopamine layer is soaked in a solution containing silver ions, and the silver ions are chelated with amino and phenolic hydroxyl groups in polydopamine; and S5, reducing silver ions on the surface of the fiber into silver nanoparticles through an in-situ reduction reaction, and uniformly loading the silver nanoparticles on the surface of the polyester mesh yarn by utilizing the adsorption effect of polydopamine. The conductive fiber prepared by the method disclosed by the invention has negative resistance response, and is suitable for the fields of intelligent wearable textile equipment, medical monitoring equipment and textile materials needing conductive and antibacterial properties at the same time.

The invention belongs to the technical field of spinning, and relates to a porous fine denier polyester filament yarn interlacing point dotting method and a used interlacing device, the interlacing device is internally provided with a tow channel, a compressed air channel and an air injection rotating device, and the air injection rotating device is arranged at the junction of the tow channel and the compressed air channel and internally provided with an air flow channel. The airflow channel is the only channel between the tow channel and the compressed air channel; the air injection rotating device comprises a left convex handle, an elliptical ball and a right convex handle, and the airflow channel is located in the elliptical ball; an airflow outlet a and an airflow outlet b are formed in the upper end of the airflow channel, and an airflow outlet c is formed in the lower end of the airflow channel; the porous fine-denier polyester filament yarn penetrates through the tow channel, and compressed air is continuously introduced into the air compression channel, so that the porous fine-denier polyester filament yarn can be dotted. By regulating and controlling the air flow impact mode, high network points and low loop number of the porous fine denier polyester filament yarn are realized under low pressure, and the network fastness and the overall quality of the product are improved.

The invention relates to the technical field of spinning and knitting, in particular to a silk breathable woven-imitating jacquard fabric and a processing method thereof, and the fabric is provided with woven woven-imitating twill patterns; the minimum circulation unit of the pattern is composed of eight coil transverse rows and four coil longitudinal rows. Specifically, cotton / silk blended yarns penetrate through a first transverse path and a fifth transverse path, 4C groove polyester yarns penetrate through a second transverse path and a sixth transverse path, cotton / silk / wool blended yarns penetrate through a third transverse path and a seventh transverse path, and polyester / spandex core-spun yarns penetrate through a fourth transverse path and an eighth transverse path; in one cycle unit, the singular number of transverse paths penetrate through the staple fiber yarn, and the even number of transverse paths penetrate through the filament yarn thicker than the singular number of transverse path staple fiber yarn. According to the fabric, a unique knitting process is matched with a unique dyeing process, the appearance and characteristics of a woven fabric are ingeniously simulated, the heavy and firm aesthetic feeling of the woven fabric is reserved, and the performance of a knitted fabric is also achieved.

The invention discloses a preparation method of a low-viscosity chitosan solution and a high-strength chitosan fiber thereof, chitosan molecules are dissolved and hydrated shells of the chitosan molecules are reduced under the combined action of weak acid and low alcohol, and meanwhile, the low alcohol plays a role in lubrication and dispersion, so that the viscosity of the chitosan solution is greatly reduced. The low-viscosity chitosan solution is squeezed into an organic solvent containing metal salt to be solidified into filaments, and then the high-strength chitosan fibers are obtained after drafting and drying. According to the method, the property of the chitosan solution is remarkably improved, high-speed spinning is facilitated, the requirement for efficient and clean production of the chitosan fibers is met, and the obtained chitosan fibers are high in mechanical performance, can be used for manufacturing filaments, yarns, fabrics and non-fabrics and are suitable for large-scale popularization.

The utility model discloses a moisture-absorbing, quick-drying, cool and breathable four-way stretch fabric, which is a tatting twill fabric with a two-up and one-down Z twill weave, and comprises a fabric body, the front side of the fabric body is in a twill style, the back side of the fabric body is in a point-like pattern style, and the fabric body is formed by interweaving warp yarns, first weft yarns and second weft yarns, the warp yarn is formed by stranding two twisted yarns wrapped with spandex, the first weft yarn is a twisted special-shaped section polyester filament yarn, and the second weft yarn is formed by stranding two twisted core-spun elastic yarns. According to the moisture-absorbing, quick-drying, cool and breathable four-way stretch fabric, through adjustment and application of the fabric texture and the yarn, the style is novel, processing is convenient, performance is stable, the fabric texture characteristics are fully utilized to be combined with the yarn, and the fabric has the advantages of being moisture-absorbing, quick-drying, cool, dry, comfortable, breathable and the like; the warp yarns and the second weft yarns are processed into the elastic yarns in a wrapping and core-spun mode, so that the fabric is endowed with more excellent extension and recovery performance, and the fabric has four-side elasticity and is more comfortable to wear.

The invention discloses a filament wire drawing machine for cable manufacturing, which comprises a rack, an unwinding mechanism, a winding mechanism, a tension adjusting mechanism, a heating wire drawing mechanism, a cooling shaping mechanism and a wire leading rod, the left side of the rack is rotatably provided with the unwinding mechanism, and the right side of the rack is rotatably provided with the winding mechanism; tension adjusting mechanisms are installed on the left side and the right side of the rack, the two tension adjusting mechanisms are both arranged between the unwinding mechanism and the winding mechanism, a thread guiding rod, a first sliding groove and a steel wire rope are arranged, the thread guiding rod is installed in the first sliding groove in a sliding mode through a movable head, one section of polyester filament yarn can be bound to the thread guiding rod, and the other section of polyester filament yarn can be bound to the steel wire rope. And then the driving motors pull the thread guide rods to slide in the first sliding grooves through the steel wire ropes, so that the thread guide rods rapidly move to the winding mechanism from the unwinding mechanism, in the same way, the two driving motors and the steel wire ropes arranged correspondingly facilitate rapid control of the positions of the thread guide rods, the traction process of polyester filaments is greatly simplified, and use is more convenient.

The invention relates to the field of textile fabrics, in particular to a multi-fiber all-in-one suede four-way stretch shark trouser warm-keeping suede fabric which comprises a weave 1 matched with weft plain stitch weave and made of nylon / polyester filament yarn core-spun elastic fiber spandex materials, a weave 2 adopting core-spun yarn of the weave 1 and matched with elastic spandex, and a weave 3 which is vertically connected double rib weave. Chemical fiber filaments and elastic fibers are adopted as connecting lines, and the weave 4 is a looped pile weave and is made of cellulose fibers with high hygroscopicity and excellent skin-friendly performance. Through the innovative combination of the weave 1 and the weave 4, the fabric has the multiple functions of fine appearance, four-side elastic property, bulge prevention, high elastic resilience, environmental protection, health, skin fitting, comfort, static resistance and the like, and meets the high requirements of underwear in autumn and winter for comprehensive performance.

The invention relates to the technical field of chemical fibers and textiles, in particular to a moisture-absorption quick-dry spandex-free elastic knitted fabric and a preparation method thereof.The fabric is formed by weaving polyester fibers and polyester filament yarns, the mass of the polyester fibers accounts for 50%-70% of the total fabric, and the mass of the polyester filament yarns accounts for 30%-50% of the total fabric; the polyester fibers are hydrophilic quick-dry composite elastic antibacterial polyester fibers formed by carrying out composite spinning processing on PTT (Polytrimethylene Terephthalate) and antibacterial PET (Polyethylene Terephthalate); and the polyester filament yarns are high-shrinkage antibacterial polyester filament yarns with cross sections and the like. The high-shrinkage antibacterial polyester yarn adopts a special high-molecular polymer and has the advantages of high temperature resistance and good antibacterial property, the isophthalic acid modifier assists in reducing the crystallinity and improving the contractibility, the spinning performance is not influenced, the two modified fibers are reasonably interwoven and exert respective advantages, the prepared moisture-absorbing quick-drying spandex-free elastic knitted fabric has the advantages that the fibers are subjected to copolymerization modification, and the moisture-absorbing quick-drying spandex-free elastic knitted fabric has good moisture-absorbing and quick-drying effects. And the fabric has a cotton-like characteristic, does not need to be added with spandex, and has various excellent properties after being treated.

Novel yarns for use in manufacturing fully sustainable textiles are provided. The yarns can be composite yarns made of two or more monofilament or multi-filament yarns, including an elastic core and a sheath disposed around the elastic core. Each of the core and the sheath are made of hydrocarbons (e.g., polyethylene and various derivatives thereof) and / or other fully-recyclable materials. The performance of the resulting yarns is on par with, if not better than, existing yarns, fabrics, and fibers with respect to tenacity, elasticity, and auxetic performance. As a result, textiles can be made from the yarns, and then the textiles themselves can be fully recyclable such that the textile can be recycled and then a new textile can be formed from the same materials of the old textile. Methods of formulating the yarns and textiles are also provided.

The utility model relates to the technical field of polyester filament yarn winding, and discloses a winding device for polyester filament yarn production, which comprises a rectangular box, a winding motor is fixedly connected to the left side of the rear of the top of the rectangular box, a rotating shaft is fixedly sleeved at the other end of an output shaft of the winding motor, and a yarn winding roller is movably sleeved on the outer surface of the rotating shaft. A rectangular groove located in the right side of the wire winding roller is formed in the top of the rectangular box. By arranging the transmission motor, the transmission shaft, the driving round wheel, the belt and the stop block, when the transmission motor operates, the transmission shaft drives the driving round wheel to rotate, and the driving round wheel rotates to drive the driven round wheel to rotate through the belt; and at the moment, the wire winding roller is pulled to move rightwards, so that rapid disassembly and assembly of the wire winding roller can be achieved, and the problem that disassembly and assembly of the wire winding roller are tedious, time-consuming and labor-consuming is solved.

The invention relates to the related technical field of polyester filament processing, in particular to a polyester filament winding thread cutting assembly which comprises a support, a top seat fixedly mounted at the top end of the support, a thread guiding assembly arranged on the lower surface of the top seat, a sliding seat connected to the inner side of the top seat through an arranged driving mechanism, and a connecting seat fixedly mounted on the outer side of one end of the sliding seat. A supporting rod is fixedly installed on the outer side of the connecting base, assembly frames are installed on the outer walls, close to the lower end, of the two sides of the supporting rod correspondingly, a transverse rod and a first roller rod are sequentially arranged on the inner sides of the two assembly frames from top to bottom, connecting rods are fixedly installed on the outer sides of the two ends of the transverse rod correspondingly, and a second roller rod is jointly arranged between the two connecting rods. A wire box is jointly installed on the outer side of the first roller rod and the outer side of the second roller rod through arranged clamping sleeves, a wire clamping piece is arranged on the inner side of the wire box, a base is fixedly installed on the edge of one end of the wire box, and U-shaped tables are installed on the upper surfaces of the two ends of the base correspondingly. And the problem that wire cutting is strenuous due to excessive adhesion of molten slag in the wire cutting process is solved.

The utility model discloses a high-strength polyester FDY (fully drawn yarn) filament which comprises a core yarn and a wrapping yarn wound on the outer side of the core yarn. The core yarn comprises PTFE split film filaments, ultra-high molecular weight polyethylene filaments and hot melting filaments which are doubled and twisted; the wrapping yarn comprises a polyester FDY filament and a special-shaped section polyester filament which are spirally wound on the outer side of the core yarn in opposite directions, the section of the special-shaped section polyester filament comprises a linear fiber body, and first protrusions, second protrusions and third protrusions are symmetrically arranged on the two sides of the fiber body; the first protrusion and the third protrusion incline in the direction away from the second protrusion. The second protrusions are perpendicular to the fiber body. According to the utility model, the PTFE split film filaments are adopted, so that the filaments have thermal stability when being heated. The used ultra-high molecular weight polyethylene filaments provide good strength for the filaments. And the used hot melting filaments can enable the core filaments to be adhered to the wrapping filaments, so that the hair falling phenomenon of the wrapping filaments is reduced. And the polyester filament yarns with the special-shaped cross sections enable the formed fluff to have good upright property.

The artificial blood vessel of the present invention is an artificial blood vessel having a predetermined weaving structure in which a warp yarn and a weft yarn are woven, wherein at least one of the warp yarn and the weft yarn is composed of a multifilament yarn including a plurality of filament yarns, and wherein the artificial blood vessel has a plurality of covering parts provided at a plurality of locations on a surface of the artificial blood vessel, each of the plurality of covering parts covering the multifilament yarn in a planar shape, and uncovered parts that are provided between the plurality of covering parts and are not covered by the covering parts on the surface of the artificial blood vessel.

The utility model discloses warm knitted underwear with a double-layer structure, which comprises an underwear body and sleeves, is made of double-layer knitted fabric and comprises an inner layer and a surface layer. The inner layer is formed by weaving antibacterial moisture-conducting covering yarn, the antibacterial moisture-conducting covering yarn comprises first core yarn and a first covering fiber layer, the first core yarn comprises hollow antibacterial polyamide filaments, and the first covering fiber layer is metallocene polypropylene fibers; the surface layer is formed by weaving antibacterial core-spun wrapping composite yarn, and the antibacterial core-spun wrapping composite yarn comprises second core yarn, a second wrapping fiber layer, a third wrapping fiber layer and a wrapping wire layer which are arranged in sequence; the first core yarn is antibacterial polyester filament yarn, the second core yarn is antibacterial polyester filament yarn, the second wrapping fiber layer is angtylene fiber, the third wrapping fiber layer is warm down fiber, and the wrapping yarn layer is graphene modified chinlon filament yarn. The used hollow antibacterial polyamide filaments have an antibacterial effect, and the metallocene polypropylene fibers have a good moisture guiding effect. The warm down fibers and the graphene modified chinlon filaments have a good warm keeping effect.

The utility model discloses a bundling device used after spinning and cooling of superfine denier polyester filaments, and relates to the technical field of bundling devices.The bundling device comprises a bundling plate, the bundling plate is connected with a plurality of carrying plates, each carrying plate is provided with a plurality of guide holes, the bottom of the bundling plate is connected with a bundling piece, and the number of the guide holes in every two adjacent carrying plates is larger than that of the bundling piece. The number of the guide holes closest to the bundling piece is smaller than the number of the guide holes farthest away from the bundling piece, each carrier plate is provided with an installation groove communicated with the corresponding guide hole, an installation block is installed in the installation groove and connected with two fixing blocks in a sliding mode, and the carrier plates are provided with fixing grooves for the corresponding fixing blocks to be clamped in. The mounting block is connected with a driving assembly used for driving the two fixing blocks to slide in the direction close to each other or away from each other. When the mounting block needs to be taken out of the mounting groove, the driving assembly drives the two fixing blocks to slide in the direction away from each other, so that the fixing blocks are separated from the fixing groove, the mounting block can be taken out of the mounting groove, and the dismounting efficiency of the mounting block is improved.

Interlock knit textiles and methods of forming and using interlock knit textiles are described. Three structural properties have been found to contribute to improved stretch properties in interlock knits. The three structural properties include the use of a unique knitted loop shape, the use of fine filament yarns, and the use of elasticated yarns having lower hysteresis than conventional elastane. The described interlock knit textiles can include one, two or all three of these structural properties. The improved stretch properties can include values for percent elongation or modulus in the length direction which are close to or the same as their values in the width direction.

A field emission (FE) cathode for a vacuum electronic device (VED) includes a graphite substrate or framework in the shape of a hollow cylinder, and at least one continuous carbon nanotube (CNT) fiber in tension or compression around at least a portion of the graphite substrate. The at least one continuous CNT fiber can include a filament, yarn, braided yarn, film, fabric, or combination thereof. The at least one continuous CNT fiber is secured to the electrically conductive substrate by vacuum brazing or any other suitable means.

The invention relates to the field of spinning, and particularly discloses a polyester filament yarn preparation process which comprises the following steps: drying polyester chips, mixing the dried polyester chips with a hydrophilic agent, carrying out melt spinning to form nascent fibers, adopting a linear spinneret plate during spinning at the spinning speed of 4000-6000 m / min, carrying out traction treatment, carrying out heat setting treatment, carrying out alkali treatment, and winding to obtain the polyester filament yarn. Preparing polyester filament yarns; wherein the hydrophilic agent is a mixture of PEG (Polyethylene Glycol) 2000 and PEG 400 in a mass ratio of 1: (2-3). The preparation method has the characteristic that the prepared polyester filament yarn has better hygroscopicity and more excellent mechanical properties.

The invention discloses a double-layer four-side elastic wool type jean fabric and a preparation method thereof, and belongs to the technical field of textiles. The double-layer four-side elastic wool type jean fabric comprises a surface layer and a skin attaching layer, the surface layer is a twill fabric surface formed by interweaving first warp yarn and weft yarn, and the skin attaching layer is an elastic base layer formed by interweaving second warp yarn and weft yarn; the double-layer four-side elastic wool type jean fabric further comprises edge weaves located on the two sides, each side is composed of 48 pieces of edge yarn, and a 2 / 2 warp rip weave is adopted. Wherein the second warp is polyester wrap yarn, first spandex in the polyester wrap yarn wraps the surface of polyester filament yarn in the Z twist direction, the twist range is 630-730 twists per meter, and the wrapping density is larger than or equal to 85%. The double-layer four-side elastic wool type jean fabric has the characteristics of high elasticity, durability, bacteriostasis, protection, softness and comfort.

The invention discloses hydrophilic skin-friendly polypropylene filament yarn production equipment and a manufacturing method thereof, and the hydrophilic skin-friendly polypropylene filament yarn production equipment comprises a supporting platen, a step-by-step cooling mechanism, a dehumidifying mechanism and a winding mechanism; an air supply pump is mounted below the supporting table plate, and a dispersion cavity is formed in the supporting table plate; the step-by-step cooling mechanism comprises a step-by-step cooling box, the step-by-step cooling box comprises a first cooling tank, a second cooling tank and a third cooling tank, and a water pump is arranged below the supporting table plate; the dehumidification mechanism comprises a dehumidification cylinder, a conveying air cavity is formed in the dehumidification cylinder, a plurality of evenly-distributed spray heads are installed on the side wall of the conveying air cavity, and moisture absorption cotton is arranged in the dehumidification cylinder. Through the arrangement of corresponding mechanisms, the polypropylene filament yarns can be cooled step by step during cooling and shaping, and cannot directly contact with water flow with lower temperature, so that the polypropylene filament yarns are prevented from generating internal stress, the probability of deformation or breakage of the polypropylene filament yarns is reduced, the production quality is improved, and unnecessary troubles are reduced for users.

The invention discloses a silk-vinegar wool composite yarn interwoven fabric and a production process thereof, the fabric is interwoven by silk-vinegar wool composite yarns, the silk-vinegar wool composite yarns are composite yarns which are formed by doubling and twisting silk-vinegar composite yarns and wool yarns and take the wool yarns as cores, and the silk-vinegar composite yarns wrap the outer layers; the silk-vinegar composite filaments are composite filament yarns formed by doubling and twisting mulberry silk and acetate filaments. The fabric embodies the excellent performance of the three fiber raw materials of mulberry silk, wool and acetic acid, overcomes the defects that mulberry silk is prone to wrinkling and wool is scratchy, has the touch feeling of real silk fabric, is soft in gloss, free of scratchy feeling, good in comfortable and natural draping feeling and good in size stability, improves the anti-pilling performance of the fabric, meanwhile has a certain anti-wrinkle effect, and is suitable for popularization and application. And the strength of the fabric meets the standard requirements of real silk fabrics.

This invention relates to the field of hollow polyester fiber technology, and discloses an octagonal star-shaped hollow polyester fiber and its preparation method, as well as a method for preparing filament yarn. The octagonal star-shaped hollow polyester fiber comprises a monofilament with a square ring cross-section and eight wing-like structures on its outer circumferential surface. These eight wing-like structures are evenly distributed on the four outer walls of the square ring, with unequal lengths on adjacent circumferentially adjacent outer walls. This invention uses wing-like structures of varying lengths on the outer circumference of the square ring, creating grooves of different depths on the fiber surface, forming capillary channels. Especially in the multifilament state, the special cross-section increases the gaps between monofilaments, improving bulkiness and air permeability. Furthermore, the large square space in the hollow portion facilitates mold design and processing, resulting in stable product performance, particularly maintaining the hollowness, thus providing better heat-shielding and insulation effects.

The invention belongs to the technical field of evaluation methods, and relates to a convolutional feature fused polyester filament yarn heather grey fabric appearance uniformity evaluation method, which sequentially comprises the following steps of: inputting an image I of a polyester filament yarn heather grey fabric into a pre-trained VGG16 network; extracting feature maps of the first convolution layer, the second convolution layer and the third convolution layer, calculating structural feature maps of all the feature maps, scaling the structural feature maps, multiplying the scaled structural feature maps point by point to obtain a fused structural feature map, calculating the value of an appearance uniformity evaluation index U based on the obtained fused structural feature map, and judging the appearance uniformity according to the value U. According to the method, effective fusion of the multi-scale texture information of the polyester filament yarn heather grey fabric is realized, the accuracy of uniformity evaluation is improved, the local change condition of the fabric texture can be reflected, and the subjectivity of manual evaluation is avoided.

The utility model provides an anti-pilling cut-flower fabric, which belongs to the technical field of textile fabrics and comprises a base layer and a fluff layer. The fluff layer is arranged on one side of the base layer, and a cut-flower pattern is formed on the fluff layer; the base layer is formed by interweaving warp yarns and weft yarns; the warp yarns and the weft yarns are fragrant, cool and breathable composite yarns; and the fluff layer is made of anti-pilling and anti-ultraviolet polyester filament yarns. The anti-pilling anti-ultraviolet polyester filament fabric comprises the base layer and the fluff layer which comprise the anti-pilling anti-ultraviolet polyester filament, so that the anti-pilling anti-ultraviolet polyester filament fabric has good anti-pilling performance, and made clothes are more durable.