416results about How to "Improve yarn quality" patented technology

The invention discloses a method for spinning color segment bamboo joint color yarns. In the spun yarn process, four rovings with at least one color are simultaneously fed into a huge drafting spinning frame which is of a four-roller, four-leather-collar and three-area type. In the four rovings, two of the four rovings are fed in from rear rollers through double-horn openings, one roving is fed in from a middle-rear roller through a yarn guiding groove, and one roving is fed in from a middle-front roller through a yarn guiding groove. According to the method, the four-roving feeding scheme is adopted, the segment color effect with four different colors at most can be achieved, and the production of segment color yarns of different styles is achieved. In the part of the spun yarn process, the four-roller, four-leather-collar and three-area type is used so that huge drafting of 30-300 times can be achieved, a foundation is laid for simultaneous feeding of the four rovings, and spinning efficiency is improved. Meanwhile, the rear rollers, the middle-rear roller and the middle-front roller in the four rollers are controlled respectively through an independent servo motor, the draft multiple in the three-area drafting can be adjusted at will, so that the segment color bamboo joint effect of various styles is achieved, and the spinning adaptability and the spinning quality of segment color yarns are improved.

The invention relates to a flame retardant blended yarn and a production method thereof. According to weight percentage, the flame retardant blended yarn is formed by the following components through blending: 25-30% of flame retardant polyester filament yarns, 20-25% of flame retardant acrylic fibers, 20-30% of hemp fibers and 20-30% of cotton fibers. The production method includes: making hemp fibers and cotton fibers into card slivers respectively and tearing the card slivers into loose fibers, and making the card slivers into hemp/cotton blended combed silvers through second blowing carding in a single fiber type mixing way; making the flame retardant acrylic fibers into flame retardant acrylic card silvers; producing blended rough yarns by use of the hemp/cotton blended combed silvers and the flame retardant acrylic card silvers; producing flame retardant blended yarns by use of spun yarns in a core spun mode; producing the needed flame retardant blended yarns after plasma preprocessing and yarn flame retardant finishing. According to the flame retardant blended yarn and the production method thereof, the hemp fibers, the cotton fibers and two flame retardant fibers are selected for blending, and accordingly the produced yarns have excellent flame retardant performance as well as good antibacterial, moisture absorptive and ventilate wearing performances; the spun yarns are in the core spun mode so the tare effect is eliminated and the flame retardance is improved.

The invention relates to a blending method using a hemp fiber as a main material. The method comprises the following steps of: firstly, processing the hemp fiber into rovings; secondly, mixing the roving yarns of the hemp fiber with the rovings or filaments of other fibers in proportion to form bunch yarns; and finally, spinning the mixed bunch yarns in the second step into spun yarns. The blending method has the advantages of improving the disintegration degree of the hemp fiber and removing impurity without damaging the performance of the blended fibers, ensuring a high spinning yam count and quality of the blended yarns and greatly improving the quality of the blended yarns of the hemp fiber along with simple process.

The invention relates to a cotton textile and relative production, wherein it is characterized in that: its transverse line and longitudinal line use the cotton yarn mixed by cotton fiber and soluble vinylon fiber, while the mass between them is 70-85:15-30; and the production comprises: spinning the cotton yarn, warping, sizing, drying, spinning blank cloth, and following treatment. The inventive product is flexible, with wet adsorption, and high yield.

The invention provides a method integrated with long spinning, wet spinning and blended spinning for bast fibers. The method comprises the following steps: the bast fibers are scotched into flax; the flax is humidified and soaked for a period of time; the flax is carded into long flax; and the long flax is subjected to matching, silvering, drawing, roving, scouring, bleaching, spinning, drying and winding. The method is characterized in that after the bast fibers are bleached, the obtained rove of the bast fibers and rove or filaments of other fibers are blended on a spinning machine. With the method, blended fibers are not bleached and scoured together with the bast fibers, so the defect that the performance of blended yarn is affected due to the damage of bleaching and scouring agents to the blended fibers in the prior wet spinning and blended spinning is overcome, and the obtained blended yarn has the characteristics of bright and clean yarn body, less hairness, evenness and good wear resistance. In addition, the method can fully play a role in respective advantages of the bast fibers and the blended fibers, complement respective disadvantages of the bast fibers and the blended fibers, has simple process, is favorable for improving the quality of blended yarn of the bast fibers, and realizes the high count, high grade and diversification of varieties of the bast fibers.

The invention provides a segment color yarn spinning device and a segment color yarn spinning method. The segment color yarn spinning device comprises a front roller, a middle roller and a rear roller, wherein the middle roller comprises a roller shaft; the roller shaft is connected with a first roller sleeve and a second roller sleeve from left to right; the front roller, the middle roller and the rear roller are driven by a first server motor, a second server motor and a third server motor respectively; a first bell mouth, a second bell mouth and a third bell mouth are additionally arranged at the upper parts of the front roller, the middle roller and the rear roller; the first roller sleeve is integrally connected with the roller shaft; the second roller sleeve is connected with the roller shaft through a bearing; and the bearing is connected with an electromagnetic switch. In the production process, main body rough yarns are fed into the rear roller from the first bell mouth, and auxiliary rough yarns are fed into the second roller sleeve of the middle roller from the second bell mouth; and the spinning of white yarn segments and colored yarn segments is realized by switching on/off of the bearing.

The invention discloses a coarse-fine combined intelligent roving machine control system. The coarse-fine combined intelligent roving machine control system comprises a roving machine doffing area, a spinning machine doffing area, an automatic roving machine doffing control mechanism, a coarse-fine combined conveyor control mechanism, a coarse-fine combined central control mechanism and a closed-loop cycling track which is arranged on the periphery of the roving machine doffing area and the spinning machine doffing area; the roving machine doffing area is provided with a plurality of roving machine yarn lifting platforms, the spinning machine doffing area is provided with a plurality of automatic spinning machine doffing devices, the closed-loop cycling track comprises a blank pipe moving-in track, a full pipe moving-out track and a full-pipe moving-in track, which are sequentially connected with one another to form a closed loop. The coarse-fine combined intelligent roving machine control system is reliable and stable in performance, high in automation degree and intelligence, capable realizing the automatic, intelligent and continuous production for spinning and conveying coarse yarns, the labor cost of a cotton spinning enterprise can be reduced, and the quality of the yarn can be improved.

The invention relates to a method for improving the properties of yarns formed by rotor spinning by reducing fiber modulus and rigidity on line, belonging to the field of textile processing. The method has the following advantages that the fiber modulus and bending rigidity of rotor spun fiber strands are quickly reduced on line by adopting a three-stage parallel softening treatment method, thus improving the fiber combing quality of the combing roller, improving torsion easiness and internal and external transfer properties when the fibers undergo rotor spinning, improving the rotor spun yarn surface twist line clarity and yarn strength and substantially elevating the capability of spinning high count yarns through rotor spinning; the key problems that the rotor spun yarn surface fibers are loose, the twist lines are not clear and the method is not suitable for spinning the high count yarns can be effectively solved; the quality of the yarns formed by rotor spinning of fibers is substantially improved; and the method is especially suitable for high-quality spinning of textile fibers with high rigidity (such as ramie) and high elasticity (such as wool) on the rotor spinning machine.

The invention provides a synchronous and anti-clockwise twist spinning device and a synchronous and anti-clockwise twist spinning method. The synchronous and anti-clockwise twist spinning device comprises a drafting mechanism and a winding mechanism, a yarn guiding device is arranged between the drafting mechanism and the winding mechanism, a false twist device is arranged between the drafting mechanism and the yarn guiding device, an upper side band and a lower side band are respectively contacted with fiber strands which are drafted and outputted through a front roller draft pair, a working face of pre-adding twist and a working face of balance twist are respectively formed, the working faces respectively generate twists opposite in twisting direction and identical in size with the fiber strands contacted with the working faces, the drafted double-fed strands are synchronously twisted through the twist generated from speed difference of a bobbin of a bead ring and the reverse twist synchronously generated from upper and lower working faces of the yarn guiding device, the final twist on yarn forming is unaffected by twist effect generated from a yarn forming area by the false twist device, double strands drafted are directed converged and twisted into yarn without changing final twist in yarn forming, quality in yarn forming is improved, and spinning efficiency is improved.

The invention discloses a fiber nesting device for ring spinning frame, which comprises a front roller, a front leather roller, a nesting leather roller, and an indraft tube arranged under the nesting leather roller. An indraft groove is arranged on the top of said indraft tube, which slideably muffcouples a conveying belt, said conveying belt is driven by the front roller via belt driving unit or directly muffcoupled on the front roller. The fiber nesting device not only effectively avoids the spinning triangular space, but also ensures matching of the nipper jaws output speed with the conveying belt linear speed, so the resultant yarn quality is further improved.

The invention relates to the technical field of textile manufacturing and processing, in particular to a covering yarn production device and method. In order to solve the technical problem that an existing compact spinning cotton web is too narrow to benefit filament covering, so that the quality of covering yarn is affected, the covering yarn production device comprises a flare opening, a first roller, a second roller, a third roller, a negative pressure pipe and a ring from top to bottom in sequence. A groove formed in the ring comprises a first end opening and a second end opening, wherein the first end opening is formed above the second end opening, and the width of the first end opening is larger than that of the second end opening. Fiber strands are subjected to drafting, stretching and reducing and then fed into the groove, namely a negative-pressure suction port, a filament volume is subjected to active unwinding and rotation of a loading roller, filaments are drawn forth, the filaments pass through a filament guide wheel and then are fed into a compact spinning leather roller, the compact spinning leather roller applies pressure on the negative-pressure suction port, core yarn covering is facilitated, filament covering cotton is avoided from being exposed to the outside, and the production quality of the covering yarn is improved.

The invention discloses a high-power drafting assembly used for a ring spinner, comprising a front drafting roller pair with a front roller and a front belt roller, and a rear drafting roller pair with a rear roller and a rear belt roller, wherein, a middle roller and an upper middle roller are arranged between the front drafting roller pair and the rear drafting roller pair, an upper pin is arranged between the upper middle roller and the front belt roller, while a lower pin is arranged between the middle roller and the front roller, an upper apron is sleeved on the upper middle roller and the upper pin, a lower apron is sleeved on the middle roller and the lower pin, the forward setting distance K between the upper pin front edge and the lower pin front edge is at least 3 millimeters, the ratio of the setting distance L from the upper middle roller to the front belt roller and the setting distance S from the roller to the front roller is between 1.1 and 1.6. The high-power drafting assembly can shorten the freestream flow zone length to the utmost extent, extend the control area of the apron, effectively increase the drafting multiple of the drafting assembly and guarantees the quality of the completed filament.

The present invention relates to a chemical degumming method of jute fiber in a short process. The technological process is kier boiling,water washing, acid washing, water washing, dehydrating, bleaching, water washing, dehydrating,and drying. The gum content and the lignin content are reduced by using the method, the hand touch is soft, the separation degree is high, the whiteness is good and difficult to turn yellow, and the spinnability and the ability of dyeing and finishing are improved.

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 provides a technology for spinning a 40<S> high tenacity vortex viscose yarn and the vortex viscose yarn. The technology for spinning the 40<S> high tenacity vortex viscose yarn is characterized in that an 80<S> ring viscose yarn is fed between front rollers of a vortex spinning machine and a vortex spinning spray nozzle; meanwhile, a wrapping viscose rough yarn is fed from rear rollers, drafted by four rows of rollers and converged with the fed 80<S> ring viscose yarn between the front rollers and the vortex spinning spray nozzle so as to be commonly twisted into a 40<S> fine yarn; the technology comprises an opening and cleaning procedure, a cotton carding procedure, a drawing procedure, a rough yarn procedure, a ring spinning procedure, a spooling procedure and a vortex spinning procedure. By the adoption of the technology for spinning the 40<S> high tenacity vortex viscose yarn, the combination of advantages of vortex spinning and ring spinning, i.e. less hair and high strength can be realized; meanwhile, during the vortex spinning procedure, the tension stability control prior to the feeding of a core yarn between the front rollers and the vortex spinning spray nozzle is realized via a mode that a filament tension control device and a filament guide frame in the shape of a circular arc are additionally installed; therefore, the uniformity of mixing the 80<S> ring viscose yarn fed between the front rollers and the vortex spray nozzle and viscose fiber fed from the vortex rear rollers and drafted by the four rows of rollers is improved, so that a finished yarn is perfected.

The invention provides a single-spindle drive wheel disc false-twist spinning device. A rotation wheel disc serves as a false-twist element, and the outer periphery of the rotation wheel disc drives a sliver in a frication mode to rotate so that false twist is generated. The single-spindle drive wheel disc false-twist spinning device is characterized in that the downstream of a front roller jaw is provided with at least one false-twist wheel disc, the periphery of one of the false-twist wheel disc contacts a front upper roller or a front lower roller in a pressing mode, the surface of the front upper roller or the front lower roller drives the false-twist wheel disc to rotate in a friction mode, the included angle alpha is formed between the axis of the false-twist wheel disc and the axis of the rollers is alpha, a false-twist contacting section exists between the sliver output from the front jaw and the periphery of at least one of the false-twist wheel discs.