61 results about "Fiber spinning" patented technology

The present application relates to the technical field of ultra-fine denier fiber spinning, and particularly relates to an ultra-fine denier acrylic high-count pure spinning yarn and a preparation method thereof, comprising (1) a picking process; (2) a doubling process; (3) a roving process; (4) a spinning process; and (5) a winding process; wherein the picking process is sequentially performed in a disc grabber, a multi-warehouse cotton mixer, an opening and cleaning machine, a cotton box and a carding machine, and a spraying device is additionally installed at the rear of the beater of the disc grabber; and the opening and cleaning machine adopts a carding needle type beater. The present application improves the picking process in the preparation method of the ultra-fine denier acrylic high-count pure spinning yarn, reduces the static electricity accumulation of the ultra-fine denier acrylic high-count pure spinning yarn in the spinning process, avoids the fiber damage of the ultra-fine denier acrylic fiber caused by single strength, and improves the spinnability of the ultra-fine denier acrylic fiber.

This invention relates to the field of functional fiber technology, specifically to a method for preparing polyester staple fibers with deodorizing and antibacterial functions. The method includes preparing hydroxyl-loaded polyester masterbatch, preparing polyester fibers and grafting them, and post-treatment. This invention prepares hydroxyl-rich polyester masterbatch by adding high-temperature resistant hydroxyl-rich nanoparticles to polyester powder, and then adds the hydroxyl-rich polyester masterbatch to the spinning of polyester staple fibers. This increases the number of active hydroxyl groups on the surface of the polyester fibers, solving the problem that polyester itself does not have active groups and cannot be directly grafted onto the surface of pure polyester fibers. The active hydroxyl groups of modified cyclodextrin undergo nucleation and addition reactions with isocyanate groups, replacing high-temperature esterification and radiation crosslinking reactions, resulting in low energy consumption and environmental friendliness. The desealing temperature of the water-based end-capped polyisocyanate is consistent with the drying and relaxation setting temperatures in polyester staple fiber production, triggering the nucleation and addition reaction and solving the problem of side reactions caused by excessively active isocyanate groups.

The utility model relates to the field of yarn carding device, and disclose a kind of yarn carding device for chemical fibre textile, including concave bracket, the inside rotation of concave bracket is equipped with bottom carding shaft, the both sides of concave bracket are provided with height adjusting assembly, and top carding shaft is provided between the height adjusting assembly of both sides, top carding shaft and bottom carding shaft correspond up and down, adapt to the carding demand of different types chemical fibre yarn. Through servo cylinder in height adjusting assembly, top carding shaft can be accurately driven to move up and down, so that the spacing between top carding shaft and bottom carding shaft is quickly and accurately changed. This effectively avoids the problem that traditional device is damaged due to the fixed spacing of excessive carding or carding insufficiently leaves messy fiber, ensures that various types, thick and thin chemical fibre yarn can be applied with suitable carding strength, improves the versatility and applicability of device.

The application relates to a spinning plate technical field, in particular to a high-performance carbon fiber spinning plate, which comprises an input pipe, the outside of the input pipe is fixedly connected with a forming pipe for high-performance carbon fiber spinning, a transmission assembly and a dredging assembly are arranged between the input pipe and the forming pipe; in an initial state, the transmission assembly blocks the channel between the input pipe and the forming pipe. The lifting ring structure controlled by the elastic telescopic rod is arranged, so that the channel between the input pipe and the forming pipe can be automatically opened and closed under the action of pressure, the first transverse channel, the annular channel and the second transverse channel are utilized to realize uniform shunt conveying of the molten material, the dredging assembly is in a standby state in a normal conveying state, and the spinning process is not affected; when the spinning hole is blocked to cause pressure rise, the lifting ring continues to move upwards and drives the gear and the gear wheel to engage, so that the plug and the dredging rod drive the spinning hole to reciprocating dredge, and the blockage can be removed without stopping.

This invention discloses a heat recovery device for a synthetic fiber spinning cooling system in the field of synthetic fiber manufacturing technology. The device includes a refrigeration unit and a cooling assembly. The output end of the refrigeration unit is connected to the cooling assembly, and the output end of the cooling assembly is equipped with a heat exchange unit. The heat exchange unit is connected to the refrigeration unit via a return pipe. This invention integrates a thermal energy circulation system of the refrigeration unit and a drying and setting oven. It absorbs the heat energy from the spinning cooling process through refrigerant circulation and directionally transports the converted high-temperature heat energy to the drying and setting oven, achieving energy complementarity between spinning cooling and drying / setting. This design eliminates waste heat emissions from traditional cooling systems and reduces external energy consumption in the drying process, achieving a comprehensive energy-saving efficiency of over 30% and significantly reducing carbon emissions. The device employs a gradient temperature control module to ensure uniform spinning cooling, prevent internal stress in the fiber due to sudden cooling, and improve fiber physical properties and post-processing quality.

A method for producing biodegradable fibers containing inorganic filler particles by wet spinning, prepared by dissolving a mixture of inorganic filler particles and biodegradable resin in a weight ratio of 50-80:50-20 in a good solvent and stirring the solution is filled into a syringe of a wet spinning machine and extruded downward from the discharge port of the injection needle into a collector container. The collector vessel is filled with a first poor solvent having a dissolution parameter value with a small deviation from the good solvent and a second poor solvent having a specific gravity greater than the first poor solvent and a dissolution parameter value with a large deviation from the good solvent, in two layers, top and bottom. The spinning solution extruded from the syringe outlet enters the first poor solvent in the collector container by its own weight in fibrous form, and then continuously enters the second poor solvent filled below the first poor solvent. The fibrous spinning solution injected into the second poor solvent becomes continuous long fibers and is deposited floating on the bottom of the collector container to form a cotton shape.

The invention discloses a fiber spinning drafting system suitable for a low-gravity environment, and relates to the technical field of glass fibers and optical fibers, the system is combined with a laser heating gas suspension system, and a supporting roller, a three-axis combined linear module, a wire drawing needle head, an automatic material supplementing system, a shielding supporting box body, a computer control system and the like are added. The pressed powdery raw material is conveyed to an air suspension nozzle and is heated and melted into a high-temperature melt through laser, a wire drawing needle tip on a wire drawing module is made to make contact with the melt by accurately controlling and moving the wire drawing module, thick wires are led out from melt liquid drops, and the thick wires pass through a supporting roller and then are wound on a wire winding cylinder of a wire drawing machine; and the winding speed is adjusted by adjusting the power of the motor, so that basalt fibers with different diameters are obtained. The wire drawing device and method are simple, the problems existing in the prior art are solved, multiple functions are achieved through the structure of the wire drawing device, and the wire drawing device has excellent functionality and serviceability and has wide application prospects.

The application discloses a carbon fiber spinning precursor and a production method of carbon fiber. The production method of the carbon fiber spinning precursor comprises the following steps: (1) preparing a first pitch material flow; (2) obtaining a first extraction phase and a first raffinate phase after the first pitch material flow is treated with a first extraction agent; obtaining a first product after the first extraction phase is separated; (3) obtaining a second extraction phase and a second raffinate phase after the first raffinate phase is treated with a second extraction agent; obtaining a second product after the second extraction phase is separated; (4) obtaining a third extraction phase and a third raffinate phase after the second raffinate phase is treated with a third extraction agent; obtaining a third product after the third extraction phase is separated; and mixing the first product, the second product, the third product and the third raffinate phase to obtain the carbon fiber spinning precursor. The application further discloses a method for preparing carbon fiber by using the carbon fiber spinning precursor. The method can continuously produce pitch-based carbon fiber products with high tensile strength.

The utility model discloses a polyethylene fiber spinning drying box, including the box, the box below is arranged with the air intake of vertical upward blowing, be provided with two rows of parallel godets in the box, and the godet of two rows is misaligned arrangement, and the fiber is staggered and laid along the godet roll surface, is set up with the silk inlet and the silk outlet respectively in the both side walls of the box, and the free rotation silk roller and the silk roller of silk inlet and silk outlet are set up respectively in the box corresponding to, the upper space of godet is covered with the hot air circulation and the pollution prevention double system cover of the box, the utility model discloses the hot air circulation and the pollution prevention double system make the condensate and oil agent not condense and drop on the fiber in the box on the top of the box, prevent the fiber pollution completely.

The application discloses a low-melting-point polyester staple fiber spinning oil and a preparation method and application thereof, and belongs to the technical field of polyester spinning oil. The low-melting-point polyester staple fiber spinning oil comprises the following raw materials in parts by mass: a smoothing agent 20-50 parts, an antistatic agent 30-60 parts, a bundling agent 10-25 parts, an emulsifier 10-30 parts and an additive 0.1-5 parts. The low-melting-point polyester staple fiber spinning oil has good system stability and use performance, can improve the smoothness, antistatic property, bundling property and dispersibility of the fiber, and effectively improves the problems of softening, doubling, adhesion and the like occurring in the spinning, drafting, crimping and heat setting processes, thereby improving the spinnability, processing stability and product quality. The low-melting-point polyester staple fiber spinning oil has the advantages of storage stability, small corrosion and low cost, and is suitable for industrial application.

This application belongs to the technical field of oiling devices and discloses an oiling device for polyester filament fiber spinning. It includes an oiling tank, with threading holes on both sides of the tank. The inner bottom wall of each of the two sets of threading holes has a first arc groove. Multiple guide rollers are rotatably mounted on the inner wall of one side of the oiling tank, and multiple guide grooves are provided on their side walls. The number of first arc grooves is equal to the number of guide grooves, and their positions correspond one-to-one. A blocking component is provided in each of the two sets of threading holes. The oiling tank contains an oiling mechanism and an automatic threading mechanism. This application, by setting an automatic threading mechanism, achieves the purpose of automatic threading of polyester filaments, eliminating the cumbersome operation of manually threading multiple polyester filaments through the tank and into the annular grooves on the first and second guide rollers, thus improving the oiling efficiency of polyester filaments.

The application discloses a kind of chemical fiber spinning system roll body cleaning device and spinning system, including, support component, be set in the roll body around scrollable;Cleaning component is connected with support component, and cleaning component is contacted with the lateral wall of roll body;Spray component is connected with support component or cleaning component, for spraying lateral wall and / or cleaning component of roll body.The beneficial effects brought by the application: by increasing spraying device, the humidity of the contact surface of roll body and cleaning component is improved, the temperature of cleaning component and lateral wall of roll body is prevented from rising, the antistatic effect is improved, and the lubricating effect is played, the friction between the surface of cleaning component and roll body is reduced, and then the wear between the two is reduced, so that the surface finish of roll body remains good, and the needs of long-period production operation are satisfied.

The application discloses a preparation method of superfine denier electromagnetic shielding functional chinlon and a product thereof. The chinlon is prepared by mixing 2-7% electromagnetic shielding functional chinlon master batch containing Fe3O4 nanoparticles and 93-98% pure chinlon chips, and then performing drying, melt extrusion, spinning cooling, oiling treatment, drafting setting and winding silk collection. In the preparation process, key parameters such as spinning temperature, filter mesh size, cooling parameter and drafting multiple are optimized, so that the problems of superfine denier fiber spinning breakage, product adhesion and uneven dispersion under high master batch content are solved. The chinlon monofilament fineness obtained by the application is 0.2-0.5 dtex, the breaking strength is greater than or equal to 3.0 cN / dtex, the electromagnetic shielding effectiveness reaches 40 dB in a frequency range of 2000 MHz, the thermal stability is better than that of pure chinlon, and the application is suitable for high-end application scenes such as high-grade clothes, home textiles, electronic protection and filtering materials.

The present invention relates to a fiber obtainable by or obtained by a process comprising the steps of: - spinning a melt of an aliphatic polyester, an aliphatic-aromatic polyester and a polyhydroxyalkanoate through a hollow fiber spinning nozzle to obtain a precursor fiber; and - cooling the precursor fiber under a temperature gradient, thereby obtaining a fiber. The present invention also relates to yarns and apparel made from such fibers and to a process for making such fibers.

The application provides a device and method for controlling the viscosity of a PAN-based carbon fiber spinning solution to be stable and uniform. The device for controlling the viscosity of the PAN-based carbon fiber spinning solution to be stable and uniform comprises a concentration kettle, a vacuum condensing system arranged above the concentration kettle, a discharge pump connected to the bottom of the concentration kettle through a pipeline, a stirring tank communicated with the discharge pump through a pipeline, a static mixer and a pressure detection part arranged between the discharge pump of the concentration kettle and the stirring tank, a three-layer paddle stirrer arranged in the stirring tank, a stirring motor arranged on the stirrer, and a current detection part connected with the stirring motor. According to the cooperation of the measurement results, the device for controlling the viscosity of the PAN-based carbon fiber spinning solution to be stable and uniform can adjust the viscosity of the spinning solution in the concentration kettle in real time, and the PAN-based spinning solution is homogenized twice, thereby providing a control device with low cost, simple structure, effective monitoring and adjustment of the viscosity of the spinning solution, and improved uniformity of the spinning solution.

The application discloses a kind of hollow fiber microfiltration membrane and its preparation method, including the following steps: spinning solution and core liquid are co-extruded by hollow fiber spinning spinneret, preliminary phase conversion is formed, and primary hollow fiber membrane filament is obtained;The primary hollow fiber membrane filament is washed by multiple stages, and the hollow fiber microfiltration membrane is obtained after drying.The gradient temperature difference of washing and the residence time of primary hollow fiber membrane filament in each stage of washing are controlled, so that the full elution of pore-forming agent and the directional migration and enrichment of hydrophilic additive to the membrane surface can be realized simultaneously, the membrane filament after washing can be directly dried, no additional elution post-processing step is needed in the whole process, the loss of hydrophilic additive is not caused, and the obtained hollow fiber microfiltration membrane can maintain good hydrophilicity and reduce membrane pollution phenomenon.

The utility model relates to a chemical fiber spinning winding device, concretely is a chemical fiber spinning prong formula winding device, including base, unwinder and bunching device, the top of base is provided with two limit seat of symmetrical arrangement and is provided with the support guide frame at limit seat one side, the limit seat is opened has the clamping groove and is provided with semicircular bearing on clamping groove, between two limit seat is provided with same rotating roller and is connected on rotating roller and is wound up the roller, the utility model discloses through prong mechanism and can realize the automatic turnover of winding roller and unload, this innovative design greatly improved the operation convenience of equipment, reduced manual intervention, reduced manpower cost, improved production efficiency, set up the plug -in structure between motor shaft and winding roller, make the installation process of winding roller more simple, can realize accurate plug -in and firm fixation of winding roller and motor output shaft during installation, ensure the stability and reliability of equipment operation.

This invention discloses a high-strength, high-insulation aramid insulating paper for electrical equipment, its preparation method, and its application, comprising the following steps: Step 1: Aramid fibers are modified by plasma treatment to obtain modified aramid fibers, which are then impregnated in ZnO quantum dot seed solution and annealed to obtain aramid fiber A with ZnO nanowires on its surface; Step 2: Aramid nanofiber spinning solution and polyvinyl alcohol solution are mixed and electrospun to obtain composite nanofiber B; Step 3: A fiber pulp suspension solution of aramid fiber A and a fiber pulp suspension solution of composite nanofiber B are mixed, dehydrated, and then cured at high temperature to obtain the desired insulating paper; The insulating paper obtained by this invention has high interfacial bonding strength, stable structure, and significantly improved mechanical properties and insulation.

A process of producing cellulose ester fibers in a retrofitted elastane production facility is provided, the process comprising: a. providing an elastane production facility comprising an elastane polymerizing zone, an elastane mixing zone, an elastane spinning zone, and an elastane spinning cabinet zone; b. converting the elastane production facility to a retrofitted elastane production facility to produce cellulose ester fibers; wherein the retrofitted elastane production facility comprises a cellulose ester mixing zone, a cellulose ester fiber spinning zone, and a cellulose ester fiber spinning cabinet zone; optionally wherein the elastane polymerizing zone is not utilized in the retrofitted elastane production facility; c. producing the cellulose ester fibers in the retrofitted elastane production facility.

This utility model discloses a system for preparing lyocell fiber spinning dope by modifying wood pulp, including an enzymatic purification kettle, a first washing kettle, a bleaching and impurity removal kettle, a second washing kettle, a pulverizer, a pulper, and a thin-film evaporator. The enzymatic purification kettle is connected to a first connecting pipe, which is equipped with a first delivery pump and a first press. The first press is connected to the first washing kettle, which is connected to a second connecting pipe. The second connecting pipe is equipped with a second delivery pump and a second press, which is connected to the bleaching and impurity removal kettle. The bleaching and impurity removal kettle is connected to a third connecting pipe, which is equipped with a third delivery pump and a third press. The third press is connected to the second washing kettle, which is connected to a fourth connecting pipe. The fourth connecting pipe is equipped with a fourth delivery pump and a fourth press. The fourth press, pulverizer, and pulper are connected in sequence. The pulper is connected to a fifth connecting pipe, which is connected to the thin-film evaporator via a screw delivery pump.

A process of producing cellulose ester fibers in a retrofitted elastane production facility is provided, the process comprising: a. providing an elastane production facility comprising an elastane polymerizing zone, an elastane mixing zone, an elastane spinning zone, and an elastane spinning cabinet zone; b. converting the elastane production facility to a retrofitted elastane production facility to produce cellulose ester fibers; wherein the retrofitted elastane production facility comprises a cellulose ester mixing zone, a cellulose ester fiber spinning zone, and a cellulose ester fiber spinning cabinet zone; optionally wherein the elastane polymerizing zone is not utilized in the retrofitted elastane production facility; c. producing the cellulose ester fibers in the retrofitted elastane production facility.

This invention discloses a functional fiber spinning production monitoring system based on edge-cloud collaboration, belonging to the field of monitoring systems. The system includes: synchronously acquiring multi-dimensional microscopic physical signals for cleaning, spatiotemporal alignment, and feature extraction processing to obtain multi-dimensional feature data; fusing and calculating the multi-dimensional feature data based on preset dynamic weight coefficients to generate a particle distribution dispersion index, comparing it with a preset threshold, generating a control trigger signal, and uploading abnormal waveform data; reading registers to obtain the blower speed setpoint and heater status, and generating control commands by executing preset reverse compensation control logic in conjunction with the control trigger signal; iteratively updating the dynamic weight coefficients based on abnormal waveform data and offline quality detection data through data association and pattern mining. This invention provides a spinning monitoring method based on edge-cloud collaboration, capable of real-time sensing of fiber microstructure instability and synchronous reverse repair, and the system possesses self-evolution capabilities, which can improve the product quality and production stability of functional fibers.

This invention relates to a method (700) for processing textile waste (990) to deliver a fiber raw material containing usable fibers for short-fiber spinning. The method includes preparing (720, 730) the waste textile, tearing (740) the prepared waste textile into shredded fiber bundles, and / or forming the shredded fiber bundles into a wadding feed. The method includes mixing the shredded fiber bundles to produce a homogeneous wadding feed, and feeding the wadding feed into a carding machine (500), wherein the wadding feed is transferred to carding rollers to open and parallelize the fibers of the wadding feed by transferring the fibers of the wadding feed to the carding rollers and rotating cover plates. The method includes a further fiber refining step, wherein the opened and parallel fibers are transferred to a combing step without being mixed with virgin fibers to sort and separate dust, shortest fibers (fallen fibers), and longer fibers from each other.

The application discloses an automatic feeding device for preparing polycrystalline alumina fiber spinning glue, relates to the technical field of chemical material adding, and stores material through a first hopper, adds material through a second hopper, divides the material into multiple feeding batches, records the weight change before and after the output of the material of the first hopper and the weight change before and after the input of the material of the second hopper and before and after the output of the material every time before the last time, obtains the total material adding error before the last feeding from the weight change, combines the total amount of the material to be added and the weight of the material to be added, calculates the last material input amount of the last first hopper to the second hopper, realizes automatic feeding through a discharging switch and a discharger, reduces the error caused by manual operation, shortens the exposure time of raw materials, reduces dust exposure and environmental pollution, realizes more accurate control of the weight of raw material adding through multiple weighing and error feedback control, and maximally reduces the error range.

A retrofitted elastane production facility is provided comprising a cellulose ester mixing zone, cellulose ester fiber spinning zone, and cellulose ester fiber spinning cabinet zone; wherein an elastane production facility comprises an elastane polymerizing zone, an elastane mixing zone, elastane spinning zone, an elastane spinning cabinet zone, an elastane twisting zone, and an elastane winding zone; optionally, wherein at least one of the elastane polymerizing zone, elastane false twist entangling zone, or elastane winding zone is not utilized in the retrofitted elastane facility; wherein the retrofitted elastane production facility produces cellulose ester fibers.

The present application relates to the technical field of fiber spinning equipment, and particularly relates to a needle-free solution spinning device, a working method and a superfine fiber preparation method. The needle-free solution spinning device comprises: a gas supply mechanism for spraying a gas flow; a liquid supply mechanism for supplying a spinning precursor solution; and a spinning mechanism comprising a roller unit, wherein the roller unit is rotatably arranged along an axial direction, a plurality of holes penetrating in a radial direction are formed on a wall surface of the roller unit, the gas supply mechanism is arranged on an inner side of the roller unit, and the liquid supply mechanism is arranged on an outer side of the roller unit. The needle-free solution spinning device, the working method and the superfine fiber preparation method have the advantages of simple operation, high spinning efficiency, strong universality, designable gas flow field and fiber structure, and continuous work without needle blockage.

A process of producing cellulose ester fibers in a retrofitted elastane production facility is provided, the process comprises spinning a cellulose ester dope in a cellulose ester fiber spinning zone of the retrofitted elastane production facility to produce the cellulose ester fiber; wherein the cellulose ester dope comprises cellulose ester and at least one solvent.

The application is suitable for the technical field of chemical fiber spinning equipment, and provides a spinneret with high wear-resistant and corrosion-resistant tantalum coating and a preparation method thereof.The method comprises the following steps: performing sand blasting treatment, ultrasonic oil removal, rinsing and blow-drying on a spinneret substrate to obtain a pretreated spinneret substrate; depositing a tantalum coating by adopting an atmospheric plasma spraying process (the spraying distance is 100-120 mm) to obtain a tantalum-coated spinneret; placing the tantalum-coated spinneret in a vacuum furnace which is vacuumized, and executing a stepwise temperature control program; and then performing polishing and removing the oxide layer on the tantalum-coated spinneret, and detecting the size of micropores to obtain the spinneret with high wear-resistant and corrosion-resistant tantalum coating.The application realizes high bonding force and high compactness of the tantalum coating by precisely controlling the calcination temperature, cooperating with the stepwise heating and slow cooling synergistic process and optimizing multiple parameters such as the spraying distance, the holding time and the cooling rate, ensures the integrity of the micropore structure, and significantly improves the wear resistance and corrosion resistance, the service life and the spinning quality of the spinneret, and reduces the maintenance cost.