4774results about "Yarn" patented technology

The invention provides a flame-retardant heat-insulating fabric for fire-fighting clothes and a preparation process thereof, and belongs to the technical field of fire-fighting fabrics. The preparation process comprises the following steps: preparing coated modified ammonium polyphosphate; modified expanded perlite; preparing a flame-retardant outer-layer fabric; preparing a heat insulation core layer fabric; preparing an antibacterial inner layer fabric; and bonding. The flame-retardant heat-insulating fabric for the fire-fighting clothes comprises a flame-retardant outer-layer fabric, a heat-insulating core-layer fabric and an antibacterial inner-layer fabric, ammonium polyphosphate is dispersed in deionized water, polyethyleneimine is added under the acidic condition, amino on the polyethyleneimine and ammonia ions of the ammonium polyphosphate are subjected to an ion exchange reaction, and the flame-retardant heat-insulating fabric for the fire-fighting clothes is obtained. According to the flame-retardant outer-layer fabric, ammonium polyphosphate is preliminarily coated, then a hydroxyethylidene diphosphonic acid solution is added for a salt forming reaction, coated modified ammonium polyphosphate with a core-shell structure is prepared, the coated modified ammonium polyphosphate and polyester powder are mixed and granulated, then the flame-retardant outer-layer fabric is prepared, and the flame-retardant property of the flame-retardant outer-layer fabric can be effectively improved.

The present invention addresses the problem of providing a pneumatic tire in which a reduction in tire performance is mitigated despite using polyamide fibers with low amide density. The solution is a pneumatic tire characterized by comprising a carcass layer (50), belt layers (60A, 60B), and a belt reinforcement layer (70A), wherein reinforcing cords (50-1, 70A-1) in the carcass layer (50) and / or the belt reinforcement layer (70A) contains polyamide fibers having an amide density of 14.0 or less, and (i) when a gauge thickness A from the outer circumferential surface on the tire inner-surface side of the reinforcing cords (50-1) of the carcass layer (50) to the tire inner surface is measured at 100 equally spaced points, the average of the gauge thickness A is 1.5 mm or less, or (ii) when a gauge thickness D from the outer circumferential surface on the tire outer-surface side of the reinforcing cords (70A-1) of the belt reinforcement layer (70A) to the tire outer surface is measured at 100 equally spaced points, the gauge thickness D is 6.0 mm or less at 80% of the measurement points or more.

The invention relates to the field of textile materials, and provides an antibacterial breathable yarn obtained by blended spinning of polyester fibers, polyamide fibers, cotton fibers and elastic fibers. The polyester fiber is prepared through melt blending and spinning processes and comprises polyethylene glycol terephthalate slices, modified chitosan zinc oxide, an antioxidant 1010, a POE elastomer, polyether modified silicone oil and polyethylene glycol 200, and the modified chitosan zinc oxide is prepared by compounding chitosan cinnamyl aldehyde Schiff base and silane modified zinc oxide. The chitosan cinnamyl aldehyde Schiff base is prepared through a Schiff base condensation reaction of chitosan and cinnamyl aldehyde, and the silane modified zinc oxide is prepared from nano rod-shaped zinc oxide particles modified by isocyanate propyl triethoxy silane. The yarn has excellent antibacterial property, air permeability and flexibility and is further used for knitting antibacterial breathable socks, the knitting density of the sock bottom part is reduced to enhance the air permeability, the knitting density of the sock opening part is improved to improve the elasticity and the fitting degree, and the yarn has wide application value.

An inner glove configured such that a chemical warmer is attachable in a position facing the back of a hand. The inner glove is configured for wearing under an outer glove, wherein the inner glove includes a body portion that is seamless in a circumferential direction of the hand, the body portion includes an opening in which a wrist may be inserted, an opening in which a thumb may be inserted, and at least two openings in which fingers other than the thumb may be inserted.

Provided are a polyethylene yarn having improved weaving properties and a functional fabric including the same, and more particularly, a polyethylene yarn which may provide a user with an appropriate cool feeling and excellent wearability and allow manufacture of a fabric having a very low fluff occurrence frequency, and a functional fabric including the same are provided.The polyethylene yarn has a polydispersity index (PDI) of 5 or more and 20 or less, a strength of 1.5 to 10 g / d as measured according to ASTM D2256, and an elongation at maximum force of 10 to 50%.

A knit fabric includes a back layer including a first back yarn, the first back yarn having a minimum moisture regain of at least 6.0 weight percent. The first back yarn is plated with a back elastic yarn. The knit fabric also includes a face layer including a first face yarn having a maximum moisture regain of less than 5.5 weight percent. The first face yarn is plated with a face elastic yarn. The knit fabric further includes a connecting elastic yarn forming yarn connections between the face layer and the back layer binding together the layers. A denier of the face elastic yarn may be greater than a denier of the back elastic yarn and the connecting elastic yarn. One or both of the back layer or the face layer may comprise a full-feeder knit construction.

The purpose of the present invention is to provide: a false-twist processed yarn which has a texture such as a dry feeling and resilience, a high texture feeling, suppressed glare, a high feeling of combing with a natural appearance, and a functionality such as extensibility; and a composite false-twist processed yarn, a twisted yarn, a woven knitted fabric, and a garment, each of which includes the false-twist processed yarn. This false-twisted yarn contains a polyester-based thermoplastic resin A and a polyester-based thermoplastic resin B, and satisfies the following requirements. (1) The difference (MA-MB) between the weight-average molecular weight MA of the polyester-based thermoplastic resin A and the weight-average molecular weight MB of the polyester-based thermoplastic resin B is 2000-15000. And (2) the polyester-based thermoplastic resin A and the polyester-based thermoplastic resin B are joined in an eccentric manner. And (3) the apparent thickness ratio (Dthick / Dthin) of the false-twisted yarn is from 1.05 to 3.00. And (4) the surface of the false-twisted yarn has slits in the axial direction of the fiber and cracks in the direction substantially orthogonal to the axial direction of the fiber.

Embodiments described herein generally relate to textile structures comprising core spun yarns, and associated methods for manufacturing. One example embodiment is a textile structure including one or more layers of warp yarns interwoven with one or more layers of weft yarns, wherein at least one of the one or more layers of warp yarns and one or more layers of weft yarns include one or more core spun yarns.

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 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 belongs to the technical field of carbon material fibers, and discloses a preparation method of a carbon nanofiber reinforced carbon material fiber fabric, which comprises the following steps: fixing a weakly twisted carbon material fiber tow on an electrostatic spinning nano yarn machine; forming a carbon nanofiber membrane by utilizing electrostatic spinning, uniformly wrapping the carbon nanofiber membrane on a carbon material fiber bundle subjected to weak twisting, then rolling into a shaft, then weaving the rolled fibers into a fabric, and sequentially performing hot pressing and carbonization treatment on the fabric to prepare a carbon nanofiber reinforced carbon material fiber fabric; the weak twisting means that the twisting degree is 5-13 twists per meter. According to the invention, the carbon nanofiber is coated on the carbon material fiber, so that the interface bonding strength between the nanofiber and the carbon material fiber is improved, and then the fabric prepared from the carbon nanofiber is subjected to hot pressing and carbonization treatment, so that the mechanical property, the electrical conductivity and the heat-conducting property of the fabric are further improved; therefore, the composite material has a huge application prospect in the fields of high-performance composite materials, intelligent textiles and the like.

Some aspects of the disclosure relate to composite materials and cultivation systems with particular utility for use in aquaculture, for example cultivating various species of seaweed. The systems comprise at least one highly tortuous and often micro-fibrous material and at least one material having low tortuosity. These systems may be configured in a variety of shapes and associated with a number of different structures. Some of these composite materials and cultivation systems may be used in both direct and indirect seeding of macroalgae plants such as seaweed.

The purpose of the present invention is to provide: a high-sensitivity composite fiber which satisfies both stretching performance and wear resistance, exhibits softness, deep color rendering, and bulkiness that are superior to those of a wool material, and a blended fiber composite fiber, a woven knitted fabric, and a garment comprising the same; this composite fiber contains a polyester-based thermoplastic resin A and a polyester-based thermoplastic resin B, and satisfies the following requirements. (1) The difference (MA-MB) between the weight-average molecular weight MA of the polyester-based thermoplastic resin A and the weight-average molecular weight MB of the polyester-based thermoplastic resin B is 2000-15000. (2) The apparent thickness ratio (Dthick / Dthin) of the composite fiber is from 1.00 to 1.04. And (3) the crimp elongation of the composite fiber is 3.0-25.0%. And (4) in the cross section of the composite fiber, the polyester thermoplastic resin B covers the polyester thermoplastic resin A, and the ratio (tmin / D) of the minimum value tmin of the thickness t of the polyester thermoplastic resin B to the fiber diameter D of the composite fiber is 0.01-0.10. And (5) in the cross section of the composite fiber, the length Ct of the portion where the region having the thickness t satisfying 1.00 tmin < = t < = 1.05 tmin overlaps the circumference of the composite fiber is Ct > = 0.33 C with respect to the circumferential length C of the entire composite fiber.

Compositions of matter, methods, and systems for producing fibers, yarns, and fabrics with enhanced thermoregulation properties are provided. The composition may be created from a cellulose solution derived from natural sources, into which nano-sized phase change materials and high-specific heat minerals are incorporated. These additives form a mesoporous structure within the fiber, enabling the capture and retention of the nanomaterials. The method involves spinning this composite solution into yarn, which can be blended with additional fibers to produce a bespoke yarn. This yarn can then be knitted or woven into fabrics that maintain thermoregulation.

A system of fibers, filaments, and / or other electrically conductive materials forms an electrically conductive-to-semi-conductive yarn that can be assembled into a textile for measurement of voltage, current, resistance, capacitance, inductance, RF, and / or EM signals. Textiles are formed through weaving, knitting, lacing, and / or non-woven mechanical methods of yarn-making into 2D / 3D structures. Textile-based electrodes can be formed via folding, cutting, layering, sewing, and / or embroidering patterns to control signal transmission within / through the electrode. Multiple electrodes are positioned on a surface (e.g., a body) to sequentially or simultaneously perform multiple diagnostic modalities (e.g., electrocardiography, electromyography, electrooculography, electroencephalogram, bioelectrical impedance analysis, skin impedance analysis, and / or electrodermal activity). These modalities are multiplexed using an optimized electrode set through amplitude and frequency deconvolution and filtering algorithms to minimize the quantity of electrodes and connections on the surface while maximizing signal-to-noise ratio, differential and common mode noise rejection, and elimination of external signals (e.g., RF and EM noise).

The present invention addresses the problem of providing a tire in which deterioration in steering stability is suppressed even when polyamide fibers having a low amide density are used. Provided is a tire which is the solution to the foregoing problem and which is characterized in that: the tire comprises a carcass layer, belt layers (60A, 60B), and a belt reinforcement layer; the carcass layer and the belt reinforcement layer include reinforcement cords; the reinforcement cords of at least one of the carcass layer and the belt reinforcement layer include polyamide fibers having an amide density of 14.0 or less; and (i) angles (α, β) formed by the reinforcement cords (60A-1, 60B-1) of the belt layers (60A, 60B) with respect to the tire circumferential direction (DC) are 25 degrees to 65 degrees, inclusive, or (ii) angles formed by the reinforcement cords of the carcass layer with respect to the tire circumferential direction are 70 degrees or more and less than 90 degrees.

The invention provides a multifunctional passive cooling optical metamaterial fiber, yarn and fabric and a preparation method thereof. The passive cooling optical metamaterial fiber is composed of high-refractive-index inorganic micro-nano particles and / or a micro-nano functional material and a polymer substrate material. Wherein wavelength / sub-wavelength scale micro-nano particles are uniformly distributed in a substrate material as a random scattering medium to form a random optical metamaterial system, and reflection enhancement of the optical metamaterial fabric in a solar spectrum band is realized by utilizing a multiple Mie resonance collective effect. According to the passive cooling optical metamaterial fiber, a circular structure, a skin-core structure and the like are prepared through melt spinning, high-refractive-index inorganic micro-nano particles are added into a skin layer and used for sunlight band wide spectrum regulation and control, and a micro-nano functional material is added into a core layer, so that multiple functions are effectively achieved.

The invention discloses an antibacterial and deodorant blended fabric, a preparation method thereof and application of the antibacterial and deodorant blended fabric in underwear, and relates to the technical field of fabrics. When the antibacterial and deodorant blended fabric is prepared, firstly, indolyl polyester is subjected to melt spinning to be prepared into fibers; the preparation method comprises the following steps: reacting fibers, indole and indole-6-formaldehyde, reacting with 4-(aminomethyl)-2, 6-di-tert-butylphenol, and reducing to obtain modified polyester fibers; secondly, the pretreated bamboo fibers react with carbon disulfide and potassium hydroxide; the preparation method comprises the following steps: oxidizing a modified bamboo fiber precursor obtained by reacting the modified bamboo fiber with 1-(2-propenyl)-1, 3, 5-triazine-2, 4, 6 (1H, 3H, 5H)-triketone to obtain a modified bamboo fiber, and oxidizing the modified bamboo fiber precursor to obtain the modified bamboo fiber; the modified polyester fibers and the modified bamboo fibers are blended and woven to obtain fabric, and then the fabric is finished through a finishing agent to obtain the antibacterial and deodorant blended fabric. The antibacterial and deodorant blended fabric prepared by the invention has good antistatic, antibacterial and durable properties.

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 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.

A method for making a textile part, comprising a step of forming a stitched seam. The stitched seam step also aims to secure an electronic tag to the textile part. The electronic tag is formed from a strip comprising a wired electronic device comprising a chip associated with at least one antenna wire, the chip and the antenna wire being arranged inside the stitched seam. The invention also relates to the textile part provided with the tag.

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 relates to the technical field of motion state control, in particular to a spindle blade motion state control method and system for wrap yarn spinning. Yarn core tension, motor operation data and environment data are collected to construct a wrap yarn spinning state vector, the importance weight of each element in the wrap yarn spinning state vector to tension change is calculated, and the wrap yarn spinning state vector is weighted according to the importance weight to obtain a weighted state vector; on the basis of the weighted state vector, the predicted yarn core tension at the next sampling moment is obtained through a tension prediction model; calculating a tension error, predicting the tension error and a tension error change rate, inputting the tension error and the tension error change rate into a self-adaptive controller to obtain a motor current control quantity, calculating a motor voltage control quantity according to the motor current control quantity, controlling a spindle blade according to the motor voltage control quantity, and adjusting parameters of the self-adaptive controller in real time through an online parameter optimization method. According to the invention, the spindle blade control precision of wrap yarn spinning can be improved.

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

The invention relates to a multi-gradient color covering yarn and a preparation method thereof. Different from the prior art, core yarn of the multi-gradient color covering yarn is POY bar code yarn, and skin yarn of the multi-gradient color covering yarn is POY slub yarn; the dye is prepared by one-bath dyeing. Wherein the core yarn bar code yarn has dark and light colors due to thickness difference, and the skin yarn slub yarn also has dark and light colors due to different densities; due to the fact that the materials of the skin yarn and the core yarn are different, the dyeing effects are different in the same time, and therefore the multi-gradient-color covering yarn comprises four different gradient colors and can be used for weaving gradient-color clothes. Meanwhile, the yarn has special texture feelings of bamboo joints and bar codes, and a garment fabric prepared from the yarn has vivid texture matched with gradient colors, so that a reflective rendering effect can be formed, and a good visual effect is achieved.

The invention belongs to the technical field of functional composite fibers, and discloses a wear-resistant nanofiber-reinforced protective graphene fiber and a preparation method and application thereof.The wear-resistant nanofiber-reinforced protective graphene fiber comprises a graphene fiber tow and nanofibers, the nanofibers coat the graphene fiber tow in a three-dimensional porous network mode, and the nanofibers coat the graphene fiber tow in a three-dimensional porous network mode. Forming a stress buffer layer; wear-resistant particles are uniformly loaded in the three-dimensional porous network; the preparation method comprises the following steps: fixing the graphene fibers subjected to surface pretreatment on an electrostatic spinning nano-yarn machine, forming a nano-fiber membrane by utilizing electrostatic spinning, uniformly wrapping the graphene fibers subjected to surface pretreatment with the nano-fiber membrane, then rolling into a shaft, and then carrying out hot-pressing roller treatment on the rolled fiber bundle, so as to obtain the graphene nano-yarn. The wear-resistant nanofiber reinforced protective graphene fiber is prepared; the graphene fiber is used for weaving to obtain the graphene fiber fabric. The fiber prepared by the invention and a fabric woven by using the fiber have excellent mechanical properties, wear resistance, electric conductivity and heat conductivity.

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 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.