279 results about "Yarn strength" patented technology

The invention discloses a low-twist, high-strength and little-fuzz yarn production method and yarn. The method includes the opening picking process, the cotton carding process, the fine carding process, the drawing process, the roving process and the yarn spinning process. A larger-diameter and narrow-groove negative pressure hollow roller and a corresponding air draft assembly are adopted for the method, and therefore generated fuzz can be effectively reduced; under the condition that a mechanical friction twist device is adopted in the yarn spinning segment to reduce the twist coefficient by 15-30%, the single yarn strength is kept unchanged, polyester filament yarn serves as core silk so that the kind adaptability of the yarn can be effectively improved, the yarn strength is enhanced, the rotating direction of the twist device is opposite to that of a spindle, the twist stopping effect can occur, the width of a twisting triangular area is increased, the wrapping effect of core yarn is favorable for being improved, and a foundation is laid for developing fabric with good soft comfort. The low-twist, high-strength and little-fuzz yarn is produced with the method. Under the condition that the designed twist coefficient is reduced by 16-28%, compared with a normal designed twist coefficient, the strength is improved by 3-5%, resultant yarn is 3mm or longer, and the harmful fuzz is reduced by 80-95% compared with harmful fuzz in ring spun yarn.

The invention relates to a non-woven sound absorbing material and in particular relates to an activated carbon-EVA composite emulsion coated polypropylene-based non-woven sound absorbing material for automobile interior decoration. The material is prepared from the following raw materials in parts by weight: 20-24 parts of polypropylene, 10-14 parts of polyurethane, 0.2-0.3 part of an antioxidant DLTP, 5-8 parts of mineral cotton fibers, 0.5-0.8 part of activated carbon micro powder with the granularity being 400-600 meshes, 1-2 parts of rosin, 1-2 parts of silicone oil, 14-18 parts of tetrapod-like zinc oxide whiskers, 0.1-0.2 part of ammonium polyphosphate, 10-12 parts of EVA emulsion with the solid content being 10-12 percent and 1-2 parts of aids. The surface of fiber yarns formed by performing melt-blowing on modified polypropylene-based master batch is coated by the EVA composite emulsion, the prepared material has the advantages of the traditional polypropylene non-woven material, the mechanical property is improved, the scour and wear resistance, fiber yarn strength and specific surface area are improved, the sound absorption and noise reduction effects are obvious, the odor in an automobile can be eliminated, and the material is fireproof, flame-retardant, light, environmentally friendly, tough and tight and is a novel and practical sound absorbing material for vehicles.

The invention discloses cotton fiber, aloe fiber and viscose fiber blended yarn and a yarn spinning process thereof. The blended yarn comprises the components by fiber-content blended ratio: 50 percent of cotton fiber, 30 percent of aloe fiber and 20 percent of viscose fiber, and the fibers are spun into the yarn through a blending process. The aloe fiber and the viscose fiber are subjected to coating mixing, and card slivers formed through working procedures such as blowing and cotton carding and cotton-fiber fine combing slivers are subjected to sliver mixing to form the yarn. A compact Siro spinning technique and the reasonable raw material collocation are adopted, so that the problems that the fiber of the aloe fiber is short, the viscose fiber is easy to deform, the elastic recovery properties are poor, the abrasive resistance is poorer, the fiber is not resistant to acid and the like are solved, and the advantages of the aloe fiber, the viscose fiber and the cotton fiber are exerted. A mixing mode of one pre-drawing and three mixing-drawing is adopted, the accurate blending ratio is favored, and the components are uniform. The produced single yarn evenness is uniform, the single yarn strength is high, the neps are less, and the yarn defects are less.

An airbag base fabric is formed of thermoplastic synthetic filament yarns, wherein the yarn strength of the filament yarn is 7.0 g/denier or more and the fineness of the filament yarn is 200-250 denier. The fabric is thin and lightweight, which is thus excellent in accommodation, and is effective in reducing the size and weight of an airbag module.

The present invention is fiber strand aggregating device for air slide, and its novel design is its aggregating roller with new splitting guide flute and porous aggregating flute. It is installed between the front jaw and the spinning section in the drawing area of spinnin frame, and the air slide fiber strand aggregating device and the front roller form one fiber jaw. By means of the additional aggregating air flows, one flow field for fiber inside the guide flute and the aggregating flute is provided. By means of splitting and guide of the guide flute and the aggregating flute and the aggregation of fiber strand in the aggregating flute, the fiber strand is twisted closely in the aggregating flute. The yarn of the present invention has improved axial parallel degree, decreased hairy feather amount outside the yarn and raised yarn strength.

To produce a textile or fabric having a high yarn strength and a high stretching property. The textile or fabric does not cause troubles such as a thread breakage even in weaving or knitting with a high-speed weaving or knitting machine. To prepare a composite twisted yarn which at least comprises a spun yarn and a water-soluble yarn twisted with the spun yarn, wherein the twist direction of the composite twisted yarn is reverse to the twist direction of the spun yarn, and the composite twisted yarn fulfils the following requirement (1) or (2) (1) the twist number of the composite twisted yarn is 1.3 to 3 times of the twist number of the spun yarn, and the weight ratio of the spun yarn relative to the water-soluble yarn is 20/80 to 98/2,

(2) the composite twisted yarn further comprises an elongated elastic yarn having an elongation of 2 to 5 times of the original length; the spun yarn, the water-soluble yarn, and the elongated elastic yarn are twisted together; the twist number of the composite twisted yarn is 0.3 to 3 times of the twist number of the spun yarn; the weight ratio of the spun yarn “1” relative to the elastic yarn “2” is 50/50 to 99.9/0.1; and the weight ratio of the total amount of the spun yarn “1” and the elastic yarn “2” relative to the water-soluble yarn “3” is 30/70 to 99/1.

The invention relates to a method for improving performances of yarns formed by vortex spinning by reducing the modulus and the rigidity of fibers on line and belongs to the field of textile processing. According to the method disclosed by the invention, a sectional softening treatment method is applied for carrying out progressive softening treatment on fibers subjected to vortex spinning on a vortex spinning machine, and thus the fiber modulus and the bending rigidity are quickly reduced on line and the performances of the resultant yarns prepared from fibers by vortex are improved. For a vortex yarn structure, the structure compactness is improved, the yarn strength is enhanced and residual torque of the yarns is small; in addition, the non-spinning fibers can be subjected to vortex spinning on the vortex spinning machine; the fibers with poorer quality for the resultant yarns formed by the vortex spinning are subjected to high-quality spinning on the vortex spinning machine; and particularly, the improvement on the spun count of the fibers on the vortex spinning machine is facilitated and the smooth production of high grade cotton yarns formed by vortex spinning is realized. The method disclosed by the invention has the advantages of short work procedure flow, strong pertinence, high efficiency, lower cost, reasonable structure, convenience in operation and easiness in large-area popularization and use.

The invention discloses a high-modulus PPTA fiber which is prepared from PPTA polymers with inherent viscosity of 5.5 to 8.0 dL/g obtained through the method of low-temperature solution polycondensation by drawing undried wet strands in the procedures of washing, neutralizing and drying in the process of dry-jet wet spinning and carrying out heat treatment under high temperature and high tension on dry strands in the procedure of drying or after drying; the modulus of the PPTA fiber is 800 to 1000 g/denier and the inherent viscosity of 5.0 to 7.5 dL/g. The fiber product obtained through the method provided in the invention has excellent yarn strength, high modulus, luster of high crystallinity, a bright color, little fuzziness, superior properties and a wider application scope, and fills in gaps in market.

The invention belongs to the technical field of textile production and specifically relates to ice-cold polyester functional fabric and a production method thereof. The fabric is satin fabric which is formed by warp yarn and weft yarn, wherein the wrap yarn is blended yarn formed by ice-cold polyester fiber and tencel fiber and the weft yarn is doubling yarn formed by doubled bamboo fiber. The production method comprises following steps: 1) beam-warping process; 2) sizing process; 3) denting; 4) weaving process. The yarn strength is increased by adopting blended yarn; the yarn feather is reduced so as to facilitate later sizing and weaving; the blended yarn is processed with sizing agent, which can effectively reduce the shrinkage of ice-cold polyester fiber and is convenient for weaving; doubled bamboo fiber is used as weft yarn; the cross sectional area of the weft yarn is doubled so that the weft direction strength is increased so as to facilitate the later high speed weaving; the production method is simple and efficient. The ice-cold polyester functional fabric has smooth hand feel, high strength and good anti-static-electricity performance and color fastness performance; the fabric is quick in cooling and heat dissipating.

The invention relates to a siro spinning method of nano-microscale reinforced short staple resultant yarn, and belongs to the technical field of textile processing. The method applies the placement of a nanofiber web above a front roller of a ring bobbin to bear the weight of a transmission input area and an electrostatic spinning area. The nano-fiber produced by two nano-electrostatic spinning nozzles in the electrostatic spinning area is continuously ejected to two bearing silk tapes to form two nano-fiber webs which are loaded by two bearing silk tapes to be conveyed to a roller nip, and to be mixed with two pieces of extended short staple roving, thus forming nano-micro fiber mixed stripe. When the nano-micro fiber mixed stripe is underway of being twisted into yarn, the nano-fiber effectively fills and reinforces the contact and blending between different micro-short-staples. The organic combination of the nano-electrostatic spinning and the normal siro spinning considerably enhances the properties such as the weight and thickness uniformity and yarn strength of the yarn processed by nano-micro fiber blending spinning, thus achieving the production of high performance, high quality nanoscale yarn.

The invention relates to the spinning technical field, in particular to a low-twist high-strength yarn and the spinning technology of the low-twist high-strength yarn. Blending is carried out on terylene and cotton which are blended according to the feeding mass ratio of 50-70:30-50, the opening picking procedure, the cotton carding procedure, the combing procedure, the drawing procedure, the roving procedure and the spinning procedure are carried out, and a terylene/ cotton blending yarn with the fineness degree of 7.4-36.7tex, the twist coefficient of 260-300 and the strength of 20-35cN/tex is spun. According to the low-twist high-strength yarn and the spinning technology, the variety adaptation of the low-twist high-strength yarn is improved, the yarn strength is improved, under the condition that the design twist coefficient is reduced by 10%-35%, the tensile strength of the blending yarn is 5%-10% higher than that when the twist coefficient is normally designed, and the foundation is laid for the development of the shell fabric with the good softness and comfort performance.

A spinning frame (1) includes a spinning device (9), a yarn clearer (52), a yarn accumulating roller (21), a suction opening (46), a suction device (30), and a unit controller (60). The spinning device produces spun yarn by applying twists to a fiber bundle. The yarn clearer (52) is arranged downstream of the spinning device and detects a yarn defect in the travelling spun yarn. The yarn accumulating roller (21) is arranged downstream of the yarn clearer and accumulates the spun yarn by rotating while winding the spun yarn around an outer peripheral surface thereof. The suction opening of the suction device is arranged near a base end of the yarn accumulating roller (21). The suction device (30) can generate suction airflow at the suction opening (46). The unit controller (60) delays a stoppage timing, which is a timing at which feeding of the spun yarn is stopped, when the yarn clearer (52) detects a prescribed yarn defect in which yarn strength is low, compared with when other type of yarn defect is detected, and stops the yarn accumulating roller (21) after the stoppage timing.

The invention discloses a high-strength fiber double-layer interweaved composite hose and a production method of the composite hose. The high-strength fiber double-layer interweaved composite hose comprises a hose blank, wherein in an inner surface and an outer surface of the hose blank, a rubber material layer is composited on at least the inner surface of the hose blank; the hose blank is a double-layer fabric with a double-layer section, and six paths of warps form a circulative weaving tissue; the double-layer fabric comprises an inner layer and an outer layer, the outer layer comprises an outer-layer warp and an outer-layer weft, the inner layer comprises an inner-layer warp and an inner-layer weft, and the inner-layer weft is interweaved with the inner-layer warp and is also interweaved with the outer-layer warp, so that the inner layer and the outer layer are interweaved into a whole body. According to the high-strength fiber double-layer interweaved composite hose disclosed by the invention, the woven hose blank has good flexibility, high pressure resistance, a few interweaving points, small yarn strength loss and small torsion degree; superlarge-aperture and high-pressure-resistance hoses meeting the market demand can be produced without special modification on the original device; the production process is simple; the practical value is high, and the production generalization performance is excellent.

The invention relates to a resin compatible type glass fiber yarn impregnation agent. The solid content of the impregnation agent accounts for 5-10% by mass of the total amount of the impregnation agent, the balance being deionized water. The solid content of the impregnation agent comprises the following components, based on the weight of the impregnation agent solid content as 100%: 50-80% of the epoxy resin emulsion, 10-25% of a non-ionic lubricant, 0-5% of a cationic lubricant, 8-20% of a silane coupling agent, and 1-6% of a pH adjusting agent. Compared with a traditional enhanced yarn impregnation agent, the impregnation agent formula has the advantage of simple composition. Mono-component epoxy resin is adopted as a film-forming agent, and two high-efficiency lubricants are combined. The impregnation agent has good compatibility with resin. With the formula, yarn strength is high. The formula also has excellent textile processing performance.

The invention discloses an impregnating agent for high-strength industrial glass fibre spun yarns and a preparation method thereof. The impregnating agent comprises the following raw materials by weight percent: 4-5% of modified starch, 0.2-0.3% of hydrogenated vegetable oil, 0.72-1.02% of vegetable oil emulsifying agent, 0.4-0.5% of water-borne epoxy resin, 0.1-0.2% of softening agent, 2.0-2.5% of polyethylene glycol, 0.03-0.05% of glacial acetic acid, 0.4-0.6% of coupling agent and the balance of water, wherein the coupling agent is an aminosilane coupling agent; the emulsifying agent is a polyoxyalkyl emulsifying agent; and the softening agent is a cationic softening agent. The impregnating agent has the advantages that the impregnating agent can endow yarns with weaving performances needed when the yarns are used as industrial fabrics; the yarns have good wear resistance and high strength and are not easy to break in the weaving process; meanwhile, the bondability between the yarns and resins can be improved; and the impregnating agent is relatively simpler to prepare and is easy to achieve.

The invention provides a beam-splitting compound spinning method for ring spinning, which includes the steps: feeding with two roves, dividing the feeding roves into several strands of fiber bundles on the front tongs mouth output point, after being drafted by the conventional spinning frame drafting mechanism, rotating and twisting the divided fiber bundle surround the center of rotation into one-ply yarn, and twisting two one-ply yarns into completed product yarn. The device includes a separating plate for separating two feeding roves and a separating wheel component for dividing roves into fiber bundles; a separating plate is fixed on the back roller base, and the separating wheel component is fixed on the vehicle panel and includes a separating wheel shaft, a separating wheel and a transmission friction wheel. The separating wheel is equipped correspondingly to the front leather roller zone, and annular deep-and-swallow, wide-and-narrow separating grooves and a groove perpendicular to the separating groove are equipped on the surface, and the bottom of the groove is parallel to the bottom of the separating groove; The transmission friction wheel is attached to the friction wheel of the front roller. The invention has the advantages that the rove fiber strand has twice beam-splits, three times twistings, the fibre in the yarn transferred multitimes, which reduces hair feather, improves yarn strength and antifriction performance.

The invention discloses a spun yarn collector. The section of the spun yarn collector is similarly circular, the radius of a contact arc of the collector and the surface of a roller is properly increased, and a double-point contact mode of the original collector is replaced by an arc contact mode, so that the problem of high friction factor due to obvious corner angles of the traditional collector is solved, sliver squeezing frequency of the inner wall of the collector is reduced, the yarn quality is improved, the width of each sliver is effectively reduced, spinning triangular space is reduced, the slivers are compact in structure and smooth in appearance, hairiness is reduced, and the yarn strength is improved. Compared with the traditional collector, the spun yarn collector has the advantages that the width of an outlet of the collector is reduced, and sliver collecting and finishing effects are good on the premise that the yarn quality is guaranteed.

The invention relates to colored polyesters and viscose blended siro-and-compact spinning yarns. Thick yarns spun by black flat polyesters, black triangular polyesters and blue triangular polyesters are fed on a siro-and-compact spinning machine together with equal-quantitative thick yarns spun by white viscose fibers through two thick yarns in order to form gray siro-and-compact spinning yarns. The number of blended siro-and-compact yarns is 20 to 60. A manufacturing process comprises following steps of a blowing process, a combing process, a drawing process, a roving process, a spinning process and a rewinding process. As for the spinning machine, the number of roving suspended spindles and siro-spinning bell mouths is doubled and a compact spinning device is added. The colors of spinning steel wire rings are darken by 1 to 2 degrees. Double bell mouths and a large-power fan are adopted in the region behind the spinning machine. The relative humidity of production environment in all processes is within the range of 52% to 58%.The colored polyesters and viscose blended siro-and-compact spinning yarns are compact in structure, few in features and defects and high in yarn strength and are energy-efficient and eco-friendly without dyeing.

The invention belongs to spinning technologies and relates to a polysulphonamide fiber cable type spinning method. Polysulphonamide fiber has high volume specific resistance, high initial modulus, low friction factor and low crimp stability, thereby being unfavorable to spinning, weaving, dyeing and the like of the fiber, and the adoption of the traditional spinning technology has the disadvantages of difficult yarn formation, high yarn hairiness and influence on yarn quality. The polysulphonamide fiber cable type spinning method comprises the following steps: using a separating roller for separating a strand into more than two shares of fiber bundles when being discharged from a front jaw of a spinning frame; leading the fiber bundles after separation to enter into a separating slot under the action of spinning tension; leading the fiber bundles in the separating slot to rotate around the twisting center under the action of spinning twisting force; and leading the fiber bundles with a certain twist to move downwards along with the winding of a yarn, and leading all the fiber bundles to converge at one point and carry out the rotary motion around the twisting center of the whole yarn, thereby forming a cable type spun yarn. The polysulphonamide fiber cable type spinning method has the advantages that the polysulphonamide fiber cable type spun single yarn has low hairiness and high single yarn strength; and the elongation at break of the single yarn is small.

The invention relates to high-count high-density cotton-nylon double-layer cloth and a weaving process thereof. Warps are made with high-count combed all-cotton 9.7tex compact-spun yarns; wefts are made with all-cotton 58.3tex-7.8tex covered spandex yarns and 4.4tex-2.2tex nylon filament spandex covered yarns, and 11.1tex-4.4tex nylon filament spandex covered yarns according to the ratio of 1:1:1, in a weft-backed weave structure of 2/2 twill and eight irregular stains. The components and ratio of environment-friendly size which has good mobility, soft coat and fitting hairs is adopted for sizing in weaving; low pressure, maceration and coating are balanced for sizing; accordingly, yarn strength increase, friction decrease and elongation retention are achieved, and leasing difficulty and dent impact are avoided. a high-elastic reed is used in weaving, a loom is controlled to open in advance and close late, stable and reasonable pressure and weaving pressure are provided, the height of a back rest and a drop rack is decreased, balance of the back rest is decreased, weaving defects are fewer, filaments of different specifications are added to the weft-wise front, all-cotton spandex covered yarns are added to the weft-wise rear, and the double-layer weave is constructed with different basic weaves. The high-count high-density cotton-nylon double-layer cloth has the advantages that the cloth cover is thick and elegant with cross bands hidden in the diagonal direction, the cloth is more three dimensional, free of wrinkle and hair and comfortable to wear and is elastic, weaving machines are more efficient, and energy consumption is low.

The invention relates to a spinning process for superfine wool, which comprises the following production steps: producing the superfine wool with the fineness of between 13.0 and 14.5 mu m into rove through a pre-spinning process, and then producing the rove into high-count wool yarn through a post-spinning process. The spinning process has the advantage that the produced high-count wool yarn has little filoplume, even yarn levelness, smooth yarn and good luster, and can meet the requirements of post production on yarn strength, abrasion resisting property and extensibility.

The invention discloses a bacteriostatic wicking anti-ultraviolet bamdal blended yarn. Bamdal fibers and wicking anti-ultraviolet ultra-spun cotton are blended with one another to form the bacteriostatic wicking anti-ultraviolet bamdal blended yarn, the bamdal fibers account for 30-50% of the weight of a main yarn, wicking anti-ultraviolet ultra-spun cotton fibers account for 50-70% of the weight of the main yarn, the cross section of each wicking anti-ultraviolet ultra-spun cotton fiber is crossed, and nanometer-sized titanium dioxide powder is added into the yarn in spinning procedures; the yarn is spun via blowing, carding, drawing, roving and spinning procedures. The bacteriostatic wicking anti-ultraviolet bamdal blended yarn has the advantages that the yarn has an anti-ultraviolet function and is excellent in wicking property and breathability, a quick wicking effect can be realized by a fabric made of the yarn, and a wearer can wear the fabric comfortably; technological parameters of the carding, drawing, roving and spinning procedures can be reasonably adjusted, so that yarn hairiness of the resultant yarn can be reduced, and the yarn strength and the anti-pilling performance of the fabric can be improved.

The invention provides a colored yarn quality detection method; according to the method, the strength, shade and color fastness of colored yarn, the weaving effect and the color aberration of three layers of inner, middle and outer layers of yarn on cones are detected for determining if the dyeing effect of the colored yarn achieves production standards and meets follow-up production requirements, the production standards of the colored yarn are completely detected, the high accuracy of detection effect of each aspect can be ensured by the detection mode, the colored yarn which does not meet the production requirements can be effectively removed, single yarn strength detection of the colored yarn can ensure that the yarn has enough strength, shade and color fastness, the detection of the color aberration of the three layers of inner, middle and outer layers of the yarn on cones can ensure that the colored yarn has a good and uniform dyeing effect, and the detection of the weaving effect can ensure that a fabric knitted by the dyed colored yarn is soft and comfortable in hand feeling.

The invention relates to a weaving method of cotton-vinylon blended hollow yarn home textile fabrics. The method comprises steps of 1) of water-soluble polyvinyl alcohol spinning, the polyvinyl alcohol is spun through a dry spinning method, the polyvinyl alcohol solution with the concentration of 30-40% is made to flow through a spinning device and is pressed into a hot air passage from small holes of a spinning jet, and the hot air is utilized to evaporate the water of the polyvinyl alcohol solution so that the polyvinyl alcohol solution is made to coagulate into filament fiber in fine flow;2) of spinning of core-spun yarns; 3) of weaving, pure cotton yarns and the core-spun yarns obtained in the 2) are subjected to sizing at the temperature of 50-75 DEG C, and the fabrics are woven at intervals; and 4) of desizing and vinylon-dissolving, the fabrics obtained in the 3) are simultaneously subjected to desizing and vinylon-dissolving, the desizing liquid is kept for 30-45 minutes at the temperature of 90-98 DEG C, and the fabrics after complete desizing and vinylon-dissolving are obtained. The weaving method is advantaged in that good vinylon-dissolving of the core-spun yarns and high yarn strength in the weaving process are achieved.