384results about How to "Improve spinning efficiency" patented technology

The present invention is characterized by that on the spinning machine it utilizes addition of a yarn tension control device and simple renovation of guide wheel to spin the invented core-spun composition yarn whose yarn is covered with staple fiber, and its covering rate is high. Said composite core-covered yarn not only has the appearance style, hand property, fluffy property and other advantages of staple fibre, but also possesses the strength and elongation, conformal property and drapping property, etc. of yarn.

The invention discloses a device and a method for preparing polysulfonamide nanometer fiber nets by means of airflow-electrostatic combination. The device comprises a liquid storage tank, an air chamber, an electrostatic generator and a receiving device, a plurality of spinnerets are arranged at the bottom of the liquid storage tank, the air chamber is arranged outside the liquid storage tank, air outlets in the number equal to that of the spinnerets at the bottom of the liquid storage tank are arranged at the bottom of the air chamber, the spinnerets are arranged inside the air outlets, an electrode with multiple pins are led from the positive electrode of the electrostatic generator to be connected with the spinnerets, and a lead is led from the negative electrode of the electrostatic generator to be connected with the receiving device. The method includes steps of combining the airflow method and the electrostatic spinning method effectively to prepare the polysulfonamide nanometer fiber nets. By the device and the method for preparing the polysulfonamide nanometer fiber nets, the specific surface area of the polysulfonamide nanometer fibers is enlarged greatly, the problem of blockage of existing electrostatic spinning needles due to inflow of the airflow is alleviated greatly, and spinning efficiency is improved. Besides, nanometer fibers can be prepared at the normal temperature directly, so that production procedures are simplified and production cost is saved.

The invention discloses an atmospherecontrolled electrostatic spinning apparatus and its industry application, and the said electrostatic spinning apparatus includes statitron (1) with material chamber(3) of prograding piston (301), incubator (4), blow head (6), electrostatic spinning surgetank (8), receiver (9), high-voltage electrostatic field electrode and material dispatcher(5) installed in incubator (4). The invention improves the electrostatic spinning method and largely improves the spinning rate by adopting a plurality of spray caps, and the invention can distinctively improve the quality of the electrostatic shaped article, control the solvent volatilization speed, stabilize the environmental factor in electrostatic forming process, increase the raw material and solvent species used for electrostatic figuration and improve the electrostatic spinning deliverability. The invention extremely reduces the unit cost of the electrostatic spinning and widens the application foreground.

The invention provides a method for preparing an improved fibrino spinning original solution that ion liquid is used as solvent, which includes: two phases of swelling and dissolution, namely, placing dried fibrino dissolving pulp and 1-butyl-3-methyl imidazole villaumite with 1%-20% water ratio into a dissolution device for uniform mixing, firstly, leaving and swelling in 70-100 DEG. C, then stronger stirring for swelling to plasm shape without dissolution; secondly, raising temperature to 80-125 DEG. C slowly in stirring state, stirring and reducing pressure distillation for removing water component, fibrino can be dissolved completely after 2-8h; finally, reducing stirring speed, and reducing temperature of plasm to 90-100 DEG. C and keeping 30-60 min for obtaining straw yellow spinning original solution. The method provided by the invention has advantages that the spinning original solution is more uniform, dissolution is more fully, gelatin particle in the spinning original solution is reduced, the spinning original solution quality is increased; apparent viscosity of the spinning original solution is reduced, accordingly, solid content in the spinning original solution is increased further.

The invention relates to a method for preparing an aramid IIII fiber, which comprises the following steps of: (1) synthesizing a spinning stock solution, carrying out low-temperature copolymerization by adopting three monomers of p-phenylenediamine, paraphthaloyl chloride and 5(6)-amido-2-(4-amidophenyl)benzimidazole as raw materials and adopting dimethylacetylamide/lithium chloride as a solvent; (2) spinning by adopting a dry method spinning process, i.e. leading the spinning stock solution obtained in the previous step to pass through a spinneret and directly enter a hot inert gas channel and evaporating and removing the solvent in the spinning stock solution by utilizing a hot inert gas to obtain cured raw yarn; and (3) carrying out water washing and heat treatment on the raw yarn and winding to obtain the aramid IIII fiber. The method has high solid content of the spinning stock solution, high spinning speed, great improvement of spinning efficiency, obvious reduction of fiber manufacturing cost, improved mechanical performance of the manufactured aramid IIII fiber and wide application prospect.

The invention relates to continuous high efficiency nano spinning solution (15), a nanofiber nonwovens manufacturing method and a manufacturing device which not only has high manufacturing efficiency but form better thickness of the nanofiber nonwovens. The manufacturing device comprises a solution supply system, a solution feeding pipe (8), a connecting mechanism and a metal roller (6); a metal strainer (10) and a fiber receiving web (11) which have the same shaft with the metal roller are sequentially arranged on the outside of the metal roller (6), an unreel roller (12) and a winding roller (13) are arranged on the fiber receiving web (11), and pores (7) are cut on the hollow metal roller (6). The manufacturing method includes the steps: (1), polymer spinning solution (15) is prepared; (2), an electric field is arranged between the metal roller (6) and metal strainer (10); (3), the metal roller (6) is revolved at a certain speed; (4) a measuring pump (4) is led to the metal roller (6) for even internal inputting; (5), the nanofiber is received. The invention is good for the scale manufacturing of static spinning.

The invention discloses ultra-high-count pure cotton combing yarn and a spinning technology of the ultra-high-count pure cotton combing yarn. Raw cotton comprises, by weight, 15%-25% of Egypt cotton, 25%-35% of American cotton and 40%-50% of Xinjiang long stapled cotton, wherein the Egypt cotton, the American cotton and the Xinjiang long stapled cotton are blended to spin 200S to 300S pure cotton yarn. The spinning technology includes the following steps that the first procedure of blowing-carding, the second procedure of combing, the third procedure of drawing, the fourth procedure of roving yarn, the fifth procedure of spun yarn and the sixth procedure of spooling. With the blending scheme, the raw cotton can integrate the advantages of high fineness and good maturity of the Egypt cotton, the advantages of high strength and non-existing abnormal fibers of the American cotton, the advantage of large length of the Xinjiang long stapled cotton and the like. The raw cotton reaches the requirements for the fiber length, the length CV value, the Micronaire value, the fineness, the strength and other performance indexes of raw cotton in producing ultra-high-count yarn. According to the spinning technology of the ultra-high-count pure cotton combing yarn, the ultra-high-count yarn can be produced under a large ration of roving yarn, the spinning efficiency is improved and meanwhile, quality of resultant yarn is ensured.

The invention relates to a continuous mass production method and continuous mass production equipment for electrospun nanofiber membranes. The method comprises the following steps: (1), electrified electrodes are kept in a vibrating state to drive polymer liquor to a plurality of protrusions on the upper surfaces of the electrified electrodes, so as to form a Taylor cone, and ensure that the whole upper surfaces become spinning surfaces, which obtains high spinning production capacity; (2), air in the space between two electrodes is sucked to the back side of a counter electrode to generate an air flow, so that stressed drift of nanofiber is accelerated, and the nanofiber is sucked to be laid on a continuous receiving screen to form a membrane; and (3) the air flow is heated dry hot air. The equipment comprises a polymer container, the vibrating electrified electrodes, the continuous receiving screen, the counter electrode and a negative pressure chamber, wherein the upper surfaces of the vibrating electrified electrodes are approximately in accordance with the liquid level; the counter electrode is made of a metal mesh or a porous metal plate; the negative pressure chamber comprises a hood, a rear air chamber, a balancing plate and an air suction pump; each vibrating electrified electrode is a metal mesh-shaped plane or a porous metal flat plate; innumerous holes and innumerous small protrusions are formed on the plane; and the small protrusions are regularly arranged and higher than the plane. The invention facilitates mass production of the electrospun nanofiber membranes.

The invention discloses an intelligent management system for an intelligent spinning workshop. The intelligent management system comprises an information monitoring system, an information processing system and an information regulation system. Data of the whole spinning workshop is monitored by the information monitoring system in real time, then data in the spinning workshop is processed by the information processing system to obtain regulation parameters of the intelligent spinning workshop, and finally, running of equipment in the intelligent spinning workshop is regulated by the information regulation system. The intelligent management system for the intelligent spinning workshop achieves automatic production and transportation control from raw materials to finished products and onlinemonitoring and control over the quality and yield of the products through an informatization network technology, a fusion sensor technology, frequency-conversion speed regulation and the like, the product quality and the production efficiency are significantly improved, the production cost is reduced, and the intelligent management system has the advantages of modernization, scientification and standardization.

The invention discloses a polyvinyl alcohol nanofiber membrane good in water resistance and a preparation method thereof. In the method, ionized water, organic acid, alcohols, polyvinyl alcohol, a crosslinking agent and a catalyst serve as main raw materials for electrostatic spinning solution; and the degree of crosslinking of the polyvinyl alcohol nanofiber membrane is improved through heat treatment after electrostatic spinning. A disclosed process is green and environmentally friendly. Compared with a conventional nanofiber filtering material, the polyvinyl alcohol nanofiber membrane is free of solvent recovery and solvent residue problems and free of toxic and side effect, and the prepared polyvinyl alcohol nanofiber membrane has excellent water resistance and can serve as a medical dressing or an air filtering material.

The invention relates to a high voltage static power shuttle nano-spinning device. The device is composed of a spinneret nozzle, a liquid storage cavity, a metal valve needle, an adjusting cap, a liquid supply tank, a multifunctional high voltage static generator, a cavitation machine, a cavitation machine deckle rod, a positive pressure power pump, a positive pressure power pipe, a siphon type feed pipe, a net structure electrode, a receiving substrate, an unwinding roller, a winding roller, nanofiber, a constant temperature system, a ventilating system, an illuminating system and an environment isolation box. A high voltage static power shuttle body is formed by the spinneret nozzle, the liquid storage cavity, the metal valve needle, the adjusting cap and a shell. A high voltage static power shuttle is jointly formed by the spinneret nozzle, the liquid storage cavity, the metal valve needle, the adjusting cap, the shell, the multifunctional high voltage static generator, a liquid storage tank, the siphon type feed pipe, the positive pressure power pipe, the cavitation machine, the cavitation machine deckle rod, an output line, the ventilating system, the illuminating system, a humidity and temperature regulator and the box. Through the establishment of the high voltage static power shuttle and the adjustment of the size of the spinneret nozzle, the static field intensity, the pressure and the frequency of the cavitation machine, the spinning speed and the diameter of the nanofiber can be adjusted, and the high voltage static power shuttle nano-spinning device has the advantages of being high in spinning efficiency, free of blocking, easy to clean, safe, reliable, easy and convenient to operate, environmentally friendly and the like.

The invention relates to a nano filtering membrane containing silk fibroin consisting of complex fibers formed by silk fibroin and nano carbon, wherein the membrane contains 70-95wt% of silk fibroin and 3-30wt% of carbon nanospheres in unit area, the filtering membrane is 0.05-5 microns thick, has high specific area of fiber, strong adsorption effect and high strength, and is durable. The preparation method of the nano filtering membrane comprises the following steps: (1) putting silk into a sodium carbonate solution, boiling for degumming, and filtering to obtain coarse silk fibroin; (2) putting the obtained coarse silk fibroin into a calcium chloride solution for dissolution, thus obtaining an initial liquid of silk fibroin; (3) desalting the obtained initial liquid of silk fibroin to obtain a silk fibroin fluid; (4) adding carbon nanospheres into the obtained silk fibroin fluid, and performing ultrasonic dispersion uniformly to obtain a spinning solution; and (5) performing electrostatic spinning on the obtained spinning solution to obtain the nano filtering membrane.

Disclosed are a cotton sliver mercerizing process and a mercerizing device utilizing the same, which belong to the technical field of textile technology. The cotton sliver mercerizing process includes: a, cotton sliver pretreatment step including dewing cotton slivers and dewatering the same or squeezing water out of the same to form wet cotton slivers with certain liquid content; b, a cotton sliver reeling step including reeling the wet cotton slivers on a reeling machine and fixing the cotton slivers by lay bands; c, a covering step including wrapping the reeled cotton slivers with the wrapping cloth integrally; and d, a mercerizing step realized by concentrated spraying and instant squeezing. The sliver cottons are mercerized effectively by dewing to reinforce and by means of concentrated spraying and instant squeezing, and alkali content of the cotton slivers is controlled all the time, so that the cotton slivers cannot be dissolved due to excessive swelling, and the difficult problem of failure in mercerizing the cotton slivers without twist is solved. In addition, the mercerized cotton slivers are bright, smooth and fluffy, and dye color yield is increased by 20%-30%.

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 relates to an anti-haze screen window and a preparing method thereof. The anti-haze screen window is made of high polymer materials, titanium dioxide nanoparticles and screen window materials through an electrostatic spinning method. The high polymer materials are one or more of polyvinylidene fluoride, poly methyl methacrylate, thermoplastic polyurethane, polyacrylonitrile and polyethylene terephthalate. According to the anti-haze screen window, the spinning efficiency is high, nano-fiber membranes are uniform and are in close fitting with the screen window, holes are dense, ventilation and breathability are achieved, the screen window can be anti-haze, anti-dust, anti-pollen and anti-mosquito, PM2.5 particulate matters are be effectively blocked, the PM2.5 filtering efficiency reaches more than 99%, clean air effective circulation indoor and outdoor is maintained, and exhaust gas pollution of automobile tail gas is effectively solved. The preparing method of the anti-haze screen window is simple, raw materials are easy to obtain, the cost is low, and scale production is easy.