2663results about "Artificial thread manufacturing machines" patented technology

Melt blown nonwoven webs are formed by supplying attenuating fluid to a meltblowing die through an attenuating fluid distribution passage whose distribution characteristics can be changed while the die and manifold are assembled. By adjusting the distribution characteristics of the passage, the mass flow rate of attenuating fluid to channels in the meltblowing die and the temperature of the attenuating fluid at the die outlets can be made more uniform.

The invention discloses a saw tooth type needle-free electrostatic spinning device, which comprises a liquid supply system, a spinning system, a power supply system, a receiving system, a transmission system and a control system. The device is characterized in that the spinning system comprises a spinning manifold body, a spinning component and a center shaft; the exterior of the spinning manifold body has a horizontal cuboidal shape, and a horizontal cylindrical cavity is formed in the spinning manifold body; a main body of the center shaft is arranged in the cavity, and the two ends of the center shaft extend from the spinning manifold body, and are connected with the transmission system; the spinning component has an axially continuous or parallel thin rack structure, and points of a rack are outwards arranged on the center shaft, and can be driven by the center shaft to rotate; distances of 1 to 3mm are reserved between the points and the inner wall of the spinning manifold body; a liquid inlet pipe orifice of the spinning manifold body is communicated with a spinning metering pump of the liquid supply system, and an overflow port of the spinning manifold body is connected to a liquid storage device of the liquid supply system through a pipe, and is reserved between the bottom of the spinning component and the center shaft; and rectangular spinning openings are reserved in positions opposite to the highest parts of the spinning component on the upper surface of the spinning manifold body.

The invention belongs to the field of high polymer materials, and provides a long-acting electrostatic holding meltblown polypropylene electret and a preparation method and an application thereof. Themeltblown polypropylene electret provided by the invention contains blended master batch and meltblown polypropylene; the master batch contains a matrix material, an electret filler, a modifier, a dispersing agent, a coupling agent and an antioxidant, wherein the matrix material is polypropylene; the electrets filler is tourmaline and/or a fluorine-containing polymer, and the modifier is a nucleating agent. The meltblown polypropylene electret provided by the invention is obtained by adding the master batch into the meltblown polypropylene for spinning and by passing through a corona electrets, and the obtained meltblown polypropylene electrets material is stable in charge storage, high in filtering efficiency and high in temperature resistance.

The invention provides a method for preparing drug sustained release nanofibers. The method is characterized by including the specific steps that (1) drug-carried micro-spheres are arranged in an organic solvent to be evenly stirred and vibrated to obtain core layer spinning solutions; (2) degradable solutes and volatile solvents are evenly mixed to prepare surface-layer spinning solutions; (3) the surface-layer spinning solutions and the core layer spinning solutions are injected into a surface-layer liquid storage tank and a core layer liquid storage tank of a coaxial spinning jet respectively, coaxial electrostatic spinning is carried out at the room temperature, and the volatile solvents in the surface-layer spinning solutions volatilize to form through holes in the spinning process to obtain the drug sustained release nanofibers with the porous surface layer and the drug-carried micro-sphere wrapped core layer. By means of the method, the obvious multi-stage drug release system is achieved, and the drug-carried micro-spheres are released in the core layer firstly to enter a hole channel in the surface layer and finally enter damaged target components of the nanofibers to give play to drug effects. The method is simple in operation and gentle in reaction condition. A drug sustained release curve is well controlled, and the drug using efficiency is improved.

The present invention discloses an array multi-nozzle electrospinning device, including an electrospinning liquid supply apparatus, an electrospinning liquid spinning apparatus, a receiving electrode plate, an electrospun fiber transport apparatus and a high voltage electrostatic generator, the electrospinning liquid spinning apparatus includes effusers and nozzles, the nozzles are array-arranged; the electrospun fiber transport apparatus includes a feed roller apparatus and a discharge roller apparatus disposed on two ends of the receiving electrode plate respectively; the electrospun fiber receiving material is transported to the space between the electrospinning liquid spinning apparatus and the receiving electrode plate by the feed roller apparatus, and the discharge roller apparatus transports the received electrospun fiber out; the invention provided device can produce electrospun fiber membrane in large scale, and can produce both single polymer electrospun fiber membrane and multiple polymers blended layered electrospun fiber membrane for one time, and can obtain a electrospun fiber membrane with specific topological pattern by changing electrospun fiber receiving material conveniently, which satisfies various application requirements of electrospun fiber materials.

The invention discloses a coaxial centrifugal spinning device and method. The device comprises a direct-current motor, a supporting device, a spinning support, coaxial centrifuge tubes, spinning needle heads and a receiving device, wherein the direct-current motor is fixed to the supporting device, the spinning support is directly and fixedly connected with an output shaft of the direct-current motor, the coaxial centrifuge tubes are fixed to the spinning support, and under the action of the direct-current motor, the spinning support drives the coaxial centrifuge tubes to rotate at high speed; each coaxial centrifuge tube comprises an outer layer centrifuge tube and an inner layer centrifuge tube, each spinning needle head comprises an outer layer needle head and an inner layer needle head, during spinning, a spinning solution or melt in the outer layer centrifuge tubes and the inner layer centrifuge tubes is tossed out under the action of centrifuge force, an outer layer solution wraps an inner layer solution, and superfine fiber of a skin-core structure is formed due to centrifuge force drafting, solvent volatilization and phase separation. The coaxial centrifugal spinning device is simple, high in spinning speed and production efficiency and capable of producing coaxial superfine fiber on a large scale.

The invention discloses a method and equipment for preparing ultrahigh molecular weight polyethylene fibers. The method comprises the following steps of: blending and melting ultrahigh molecular weight polyethylene and a modifier to prepare a granular or powdery modified ultrahigh molecular weight polyethylene raw material; melting and extruding the raw material by using an extruder to form melt of which a flow rate is 0.01 to 0.2 grams per 10 minutes, feeding the melt to a spinning mould by using a melt pump to form melt strips, and cooling and pre-stretching the melt strips to obtain primary yarns; and stretching the primary yarns in a plurality of stages to obtain the ultrahigh molecular weight polyethylene fibers. The equipment comprises the extruder, the melt pump, the spinning mould, a cooling channel, a three-roller tractor, a primary hot-stretching box, a first seven-roller tractor, a secondary hot-stretching box, a second seven-roller tractor, a rinsing trough, a drying box and a winder which are arranged sequentially. The method and the equipment have the characteristics of continuous production capability, relatively shorter process flow, relatively fewer equipment components, no need of solvent, low production cost and the like.

The present invention provides a laser-guided electrospinning direct writing device capable of realizing long-time controllable preparation and precise positioning of single uniform micro/nanostructure. The device is provided with a controller, a high-voltage relay, an electrostatic high-voltage [power] source, a hollow nozzle, a collimating focusing lens set, optical fibers, a sealing adjusting part, a laser, a solution feed pump, a solution feed pipe, a collecting board and a motion platform, wherein the controller is connected with the high-voltage relay; ends of the high-voltage relay are respectively connected with the electrostatic high-voltage [power] source, the collecting board and a conductor nozzle arranged at the front end of the hollow nozzle; the sealing adjusting part is in a sealing connection with the rear end of the hollow nozzle; the optical fibers pass through the center of the sealing adjusting part and are fixedly connected with the sealing adjusting part; the collimating focusing lens set is arranged at the front end of the optical fibers; the rear end of the optical fibers comes out of the hollow nozzle and is connected with the laser; the solution feed pump is communicated with the hollow nozzle through the solution feed pipe; and the collecting board is fixed on the motion platform and faces the hollow nozzle. The laser constraints the disordered motion of spinning jet flow and guides the spinning jet flow to deposit at the laser spot of the collecting board.

The invention discloses a method for producing polythene fiber with high strength and high modulus by melting fiber drawing and a device thereof. The method includes steps as follows: blend composition of polythene with super high molecular weight and three element blend composition of polythene with super high molecular weight are used as raw material, the raw material is spout fibre adobe after melted through a screw extruder, the fibre adobe is preset drafted after cooling, then low power drafted after once heating, then high power drafted after twice heating, finally is processed heat processing for obtaining polythene fiber with high strength and high modulus. The screw extruder, a cooling mechanism, a drafting machine processing preset drafting, an once heating mechanism, a low power drafting machine, a twice heating mechanism, a high power drafting machine, a heat processing mechanism, a winding reeling machine are arranged in the device orderly. The invention provides a producing method with simple technique, short producing flow, low cost and no pollution aiming at problem that UHMWPE melting spout fibre process has difficult to spin, and provides a device with compact equipment and easy to operate.

The invention discloses a preparation method of a continuous filament of an asphalt-based carbon fiber, and belongs to the field of carbon fiber production. The preparation method solves the problems that the existing spinning speed is lower, the fiber bundle damage is large, the infusibility efficiency is low, and doubling and embrittlement are easy. The preparation method comprises the specific process steps that a, spinning asphalt is extruded into fines by spinning position fusion, humidified, oiled and bundled to form a protogenic asphalt fiber bundle; b, double roller stranding and tensioning are conducted; c, the asphalt fiber bundle is wound on a spinning roller sleeve; d, an asphalt fiber reel is immersed in an oxidability liquid phase, and a liquid-phase oxidized fiber bundle reel is obtained; e, the reel is immersed in a high-temperature-resistant oil solution; the filament is unreeled and rollers are removed at a low speed; the oxidized fiber bundle continuously enters a continuous infusible furnace and a continuous low-temperature pre-carbonization furnace to form a pre-carbonization fiber bundle reel; and f, drawing heat treatment is conducted through a continuous carbon-fiber high-temperature carbonization furnace and a graphitization furnace, and then the continuous filament of the asphalt-based carbon fiber is obtained.

The invention relates to nano-silver antibacterial melt-blown non-woven fabric and a production method thereof. The nano-silver antibacterial melt-blown non-woven fabric is characterized in that the fabric contains hybrid nanoscale antibacterial powder, a non-woven fabric base stock can be polypropylene, polyester or polyphenylene sulfide, the hybrid nanoscale antibacterial powder is formed in a way that nanoscale zirconium phosphate and silver nitrate are exchanged in water to form silver phosphate, zinc oxide needs to be added in the exchange process, and the antibacterial powder has the proportion of ingredients as follows: 2-5 percent of the silver nitrate, 90-95 percent of the zirconium phosphate and 1-5 percent of the zinc oxide. The nano-silver antibacterial melt-blown non-woven fabric has excellent inhibition and stop effects on escherichia coli, staphylococcus aureus, Candida albicans and the like, and can filter various particles with the pm (particulate matter) over 2.5 in current air haze, the filter efficiency is over 95 percent, and the antibacterial ratio is over 99 percent; the fabric is tested by sgs (Societe Generale de Surveillance); the prepared nano-silver antibacterial melt-blown non-woven fabric is good in strength, not easy to break, soft and comfortable.

The invention relates to a low-melting-point sheath-core-type polylactic acid composite fiber and a preparation method thereof and belongs to the field of double-component composite fibers. In the composite fiber, low-melting point polylactic acid is employed as a sheath layer and spinning-grade polylactic acid is employed as a core layer, wherein the core layer is completely wrapped by the sheath layer. The weight of the sheath layer accounts for 25-40% of the total weight of the composite fiber. The invention also provides the preparation method of the composite fiber, which comprises the steps of performing drying cut sheets, double-component melt distribution spinning, and fiber cooling, solidifying and winding to prepare raw filaments of the sheath-core-type polylactic acid composite fiber, and then performing after treatment to produce the sheath-core-type polylactic acid composite fiber. By means of the characters that the sheath-core-type polylactic acid composite fiber is good in loosen property and is high in elasticity recovery rate, the composite fiber can be subjected to thermal binding to form non-woven cloth, which can be widely applied as disposable sanitary materials and indoor decorative materials, thereby greatly improving additional value and market competitiveness of polylactic acid fibers.

The invention relates to a manufacturing method for superlow shrinkage type PET industrial yarn, which is characterized in that the superlow shrinkage type PET industrial yarn is manufactured through selecting and controlling cooling conditions, and the technological process is as follows: hyperviscous melting to polyester raw materials, metering, spanning, cooling, oil supplying, stretching, hot shaping, and reeled forming. For lowing the irregularity and shrinkage percentage of fiber, a slow cooling device is arranged in the production of industrial yarn, a precooling device adopted is a hollow stepped ring-shaped belt comprising an upper part and a lower part, through holes with the diameters of 5 to 7 mm are uniformly distributed in the upper part of the ring-shaped belt, through holes with the diameters of 3 to 4 mm are uniformly distributed in the lower part, and the hole arrangement densities are the same. The natural target of the PET industrial yarn is as follows: the fracture strength is equal or greater than 7.0 cN/dtex, the breaking elongation is 20.0 plus or minus 1.5 percent, and the dry heat shrinkage percentage under the test conditions of 170 DEGC, 0.05cN/dtex reaches 1.9 plus or minus 0.25 percent.

The invention relates to a spinning technology of a four-spinning-roller semi-continuous high-speed spinning machine, and belongs to the technical field of semi-continuous spinning machine spinning. The spinning technology comprises glue supply, thread forming, spinning and winding, wherein spinning is finished through a spinning device, the spinning device comprises four spinning rollers transversely arranged opposite to the operation surface of a spinning surface and are surrounded by threads, and drafting, solidification and acid removing are finished through rotating of the spinning rollers in the step of spinning. The spinning technology of the four-spinning-roller semi-continuous high-speed spinning machine solves the problems that a semi-continuous spinning machine in the prior art is insufficient in thread reaction, and therefore the spinning speed can not be increased, and production efficiency and product quality can not be given consideration to; the arrangement directions of the spinning rollers can be changed to increase the spinning speed of the spinning machine without changing structures of other parts of the original four-spinning-roller semi-continuous high-speed spinning machine, the threads can move farther and can more sufficiently react in an acid bath, and both production efficiency and product quality are given consideration to.

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 relates to a super-soft superfine polyester fiber and a preparation method thereof. The super-soft superfine polyester fiber is mainly prepared by the steps of melt spinning of polyester through spinneret holes, application of an oiling agent and high-speed winding, wherein the oiling agent at least comprises fluorine-containing polyether, the mass of which is more than or equal to 45% of that of the oiling agent, the fluorine-containing polyether is a random copolymer of ethylene oxide, [(1,1,2,2-tetrafluoroethoxy) methyl] oxirane and propylene oxide, and the structural formula of the random copolymer is shown in the specification. The preparation method comprises the steps of metering, extruding, cooling, oiling, stretching, heat setting and high-speed winding of polyester, thereby obtaining the super-soft superfine polyester fiber. As the filament fineness of the super-soft superfine polyester fiber is very high, a fabric has advantages of specially soft and fine hand feeling, soft luster, comfortableness, breathability and good appearance texture and is easy to care, thus being popular with users more and more.

The invention relates to the field of chemical fibers, in particular to a cellulous fiber, a preparation method thereof and equipment. The cellulose fiber mainly comprises cellulous, is prepared by the solidifying liquid co-current drawing and spinning technology, and meets the following conditions that the tension breakage strength of the fiber is higher than or equal to 2.0cN/dtex, the fineness of the fiber is equal to or smaller than 1.67dtex, the content of S elements in the fiber is smaller than or equal to 100ppm, the fibrillation index (F.I.) of the fiber is smaller than or equal to 2. In addition, the cellulose fiber is free of chemical compositions relevant to fibrillation treatment resistance. The invention further relates to the preparation method of the cellulous fiber and the equipment. The cellulose fiber is high in strength, low in fineness and free of fibrillation tendency, the preparation method is simple, and is easy to control and applicable to large-scale industrialized production, and the equipment is simple in structure, skillful in design and stable in condition.

The invention discloses a device for preparing nanofibers by a differential split-flow centrifugal spinning method. The device mainly comprises a motor support, a high-speed motor, a coupling, a rotator, a continuous feed device, an infrared temperature sensor, a conveyer belt roller set, an electromagnetic heater, a roller bearing block, a rotator bearing, a spinning manifold, conveying cord fabric, a rolling device and a take-up device. The motor support is fixedly arranged on the bottom bin of the spinning manifold and is used for fixing the high-speed motor; the rotator is driven to rotate at a high speed by the high-speed motor through the coupling and the rotator bearing; the continuous feed device is fixedly arranged at the top end of the spinning manifold; a discharge hole of the continuous feed device is arranged at the upper end of the rotator in an eccentric way, and a small interval is kept between the discharge hole and the upper end of the rotator. By combining a fluid differential structure and a reinforced fluid reduced conical surface, the control on the reduced degrees and centrifugal forces of fluids with different viscosity is realized, and meanwhile, a simple and efficient solution is provided to batch nanofiber preparation of solution or melt by the continuous feed device, an indirect heating device and the continuous take-up device.

The invention relates to spinning equipment, in particular to a semi-continuous high-speed spinning machine. The semi-continuous high-speed spinning machine comprises a rack, a glue supply device, a strip forming device, a spinning device and a winding device, wherein a spinning roller of the spinning device is horizontally arranged relative to an operating surface of a spinning surface. The operating surface of the spinning surface is a horizontal working surface in a spinning surface area, and the fact that the spinning roller is horizontally arranged relative to the operating surface of the spinning surface refers to that the spinning roller is horizontally installed relative to spinning workers when the spinning workers face towards the winding device. According to the semi-continuous high-speed spinning machine, the spinning roller is horizontally arranged relative to the operating surface of the spinning surface, and two ends of the horizontally arranged spinning roller are fixed, so that the spinning speed can be increased on the basis of the semi-continuous high-speed spinning machine, the spinning roller is ensured to rotate stably without shaking, and the problems of intertwining and breakage of strips caused by shaking of the spinning roller during spinning are solved.

The invention belongs to the field of high polymer materials and discloses a water scour-resistant superhydrophobic composite fiber membrane and a preparation method and application thereof. A composite fiber membrane is prepared into high polymer fibers by adopting a hydrophobic high polymer material through an electrospinning technology; homogeneous or heterogenic hydrophobic high polymer material solution coats the fiber membrane through an electrospinning technology; the composite fiber membrane is subjected to physical or chemical crosslinking treatment, and finally the superhydrophobic composite fiber membrane which is composed of the fibers and microspheres and has the surface provided with a micro-nano structure is obtained. The diameters of the fibers in the water scour-resistant superhydrophobic composite fiber membrane are 100 nm to 20 [mu]m, and the microsphere dimension is 1-30 [mu]m. The micro-nano structure formed by the fibers and the microspheres in the composite fiber membrane is fixed, so that the water scour-resistant superhydrophobic composite fiber membrane has excellent superhydrophobic and scour-resistant performances, can be applied to the fields such as oil-water separation, self-cleaning, antifreezing and antibiosis and have a huge economic benefit potential.

The invention discloses a flame-retardant antibacterial artificial wig hairline, which comprises, by weight, 80-90% of a polyester material, 5-11% of a flame retardant agent, 2.5-6% of an antibacterial agent, 0.3-3% of a dispersing agent, 0.2-0.5% of an antioxidant, and 2-5% of color masterbatch. According to the present invention, the flame-retardant antibacterial artificial wig hairline has characteristics of high simulation degree, flexible hairline, diverse color, flame retardant property, antibacterial property, no fused drop, environmental protection and the like, and can replace the expensive human hairline. The invention further discloses a manufacturing method of the flame-retardant antibacterial artificial wig hairline, wherein the manufacturing method comprises: pre-treating a polyester raw material, carrying out blending granulation on the polyester material, the antibacterial agent, the flame retardant agent, the dispersing agent and the stabilizer by using a double-screw extruder to obtain a flame-retardant antibacterial slice, carrying out melt spinning on the slice, carrying out high-temperature shaping treatment, carrying out washing and drying, and carrying out other steps.