551results about "Spinning head liquid feeder" patented technology

The invention discloses an ultra-high molecular weight polyethylene fiber melt spinning method which comprises the following steps: step 1, mixing ultra-high molecular weight polyethylene resin with polyethylene wax and high-density polyethylene to form a composition; 2, melting the composition at a high temperature to form a melt, carrying out melt spinning, and carrying out nozzle stretching and air cooling to obtain nascent fibers; and step 3, carrying out hot stretching and heat setting on the nascent fiber to obtain the final ultra-high molecular weight polyethylene fiber. By adopting the technical scheme, the melt flowability of the ultra-high molecular weight polyethylene can be greatly improved by the high-density polyethylene and the polyethylene wax, so that the ultra-high molecular weight polyethylene resin can be smoothly subjected to melt spinning. Meanwhile, in the hot stretching process, the polyethylene wax can participate in the crystallization process of the ultra-high molecular weight polyethylene resin and the high-density polyethylene, and finally the mechanical property of the ultra-high molecular weight polyethylene fiber can be well maintained.

The invention provides a superfine denier profiled polyester staple fiber and a preparation method thereof.The preparation method includes the steps of raw material pretreatment, melt spinning, nascent filament treatment, heat setting and curling, oiling and cutting off and the like, polyester chips have high intrinsic viscosity and melting point, and under the action of six-zone temperature control, a high-hole-density spinneret plate and a high draft multiple, the polyester chips are subjected to melt spinning, so that the polyester chips are prepared into the superfine denier profiled polyester staple fiber. The superfine, special-shaped and hollow polyester staple fibers are prepared. The obtained polyester staple fiber has good breaking strength, rebound resilience and a low-defect structure, the bulkiness, flexibility and structural consistency of the fiber are remarkably improved, the environment and process limitation of a traditional sea-island fiber alkali stripping method is broken through, and the polyester staple fiber is suitable for the fields of high-end filling, plush imitation, non-woven materials and the like.

The present invention relates to the technical field of polymer materials, and discloses ultra-high molecular weight polyethylene fiber and its preparation method and application. The preparation method of the ultra-high molecular weight polyethylene fiber comprises: step 1, swelling ultra-high molecular weight polyethylene, flame retardant and antioxidant in a solvent to obtain a swelling liquid; step 2, mixing, melting and extruding the swelling liquid in a twin-screw extruder to obtain a polymer melt; step 3, sending the polymer melt into a spinning tunnel for drawing to obtain ultra-high molecular weight polyethylene fiber; the feeding port temperature of the twin-screw extruder is 25-40°C, the temperature of the mixing and melting section is 80-180°C; the extrusion port temperature of the twin-screw extruder is 145-170°C; in the spinning tunnel, the spinning tunnel temperature is 75-140°C, and the air volume is 200-800N 3 / h; the drafting frequency of the drafting is 15-30. The ultra-high molecular weight polyethylene fiber provided by the invention has strong flame retardant, anti-aging and mechanical properties.

The invention belongs to the field of chemical fibers, and particularly relates to a method for preparing polyester industrial filaments by using recycled polyester chips recycled from bottles and the prepared polyester industrial filaments, regenerated PET chips with the viscosity of 0.65-0.8 dl / g and the filtration value of 0-5 MPa are selected, 1.0-1.3 dl / g regenerated high-viscosity chips are obtained after tackifying, and spinning is carried out on an existing industrial filament production line; the temperature of a screw is controlled to be 280-330 DEG C, and the lengths of a feeding section and a metering section are adjusted, so that the slices are fully melted, meanwhile, it is ensured that a large amount of melt is not degraded due to the fact that the melt contains IPA, and the stability of the outlet pressure of the screw is ensured; a spinning assembly adopts a multi-layer metal filter screen structure of 5-30 [mu] m, so that the problem that the spinning assembly is quickly boosted due to many impurities of regenerated slices is solved; and the stretching and setting conditions are optimized and adjusted, so that the physical property, broken filaments and spinnability can meet the requirements.

The utility model discloses a polyester POY colored yarn production device which comprises a heating cavity, supporting columns are installed at the top and the bottom of one side of the heating cavity, a motor is installed in the middle of the top of the heating cavity, a threaded rod is installed at the output end of the motor, and the threaded rod is connected with the heating cavity. And a raw material feeding opening and a color master batch feeding opening are formed in the top and the middle of the other side of the heating cavity correspondingly, and heating pipes are installed on the top and the middle of the outer surface of the heating cavity correspondingly. According to the polyester POY raw material mixing device, polyester POY raw materials and colored master batches are put into the heating cavity, the heating cavity is heated through the heating pipe, so that the polyester POY raw materials and the colored master batches are melted, meanwhile, the melted polyester POY raw materials and the colored master batches are mixed through cooperation between the motor and the threaded rod, and meanwhile the mixed materials can be discharged through the discharging port; and the spiral copper pipe is used for cooling and forming, so that a plurality of processing devices are not needed, and the production cost of the polyester POY colored yarn is reduced.

The utility model discloses a carbon fiber spinning assembly, which relates to the technical field of carbon fiber spinning and comprises a liquid supply module, a spinning module is mounted at the bottom of the liquid supply module, and a first fixing plate, a second fixing plate and a heating tank are sequentially mounted on the outer side of the liquid supply module from top to bottom. The multiple heating grooves are distributed in the area, located between the first fixing plate and the second fixing plate, of the outer side of the liquid supply module at equal intervals. And the heating assembly is internally provided with a plurality of heating units, the heating assembly is arranged on the outer side of the liquid supply module in a sleeving mode when used, and the heating units are embedded into the heating grooves correspondingly. The protection assembly is arranged between the liquid supply module and the coagulating bath tank, the protection assembly is formed by connecting the shielding section and the phase change section, the rotating plate in the phase change section is connected with the base plate through the universal pipes, and after the base plate is connected with the coagulating bath tank, by changing the shapes of the universal pipes, the liquid supply module is connected with the coagulating bath tank through the universal pipes. And the two ends of the first assembling plate can be kept in a parallel state.

The invention discloses a degerming melt-blown non-woven fabric preparation system and method, and relates to the technical field of melt-blown non-woven fabric processing.The degerming melt-blown non-woven fabric preparation system comprises a multi-stage melting classification assembly which is installed and erected through a supporting framework and used for forming multiple stages of melting operation, setting different temperature gradients in each stage of melting and forming independent feeding; according to the multi-stage molten resin material conveying device, classified conveying of molten resin materials of different materials can be ensured, classified conveying of the molten resin materials of different materials can be effectively ensured through cooperation of the multi-stage molten classification assembly, the injection control and adjustment assembly and the adaptive conveying assembly, and the stability and uniformity of the melting process are improved; the non-woven fabric of a multi-layer composite structure is conveniently formed subsequently, the physical and chemical performance of the non-woven fabric is improved, the quality and performance of the whole product are guaranteed, speed-controllable adjustment is formed to drive the spinning collection plate to be located at the bottom of the injection head to collect fibers, and the uniformity and stability of fiber collection are guaranteed.

The invention discloses a moisture-absorbing and sweat-guiding polyester fabric and a preparation method thereof, and relates to the technical field of high-performance fiber fabrics. The invention discloses a moisture-absorbing and sweat-guiding polyester fabric which comprises moisture-absorbing and sweat-guiding polyester fibers. The moisture-absorbing and sweat-guiding polyester fiber contains 5-12wt% of cool-feeling particles; the preparation method comprises the following steps: firstly, depositing mesoporous silica on the surface of a base material by using a pretreated mica sheet to obtain modified particles; coating the modified particles with a binary phase change material to obtain core-shell particles; and finally, carrying out hydrophilic treatment on the surfaces of the core-shell particles to obtain the cool-feeling particles. The cool particles are added into polyester, so that the polyester material is endowed with instantaneous cool performance, and the polyester is endowed with moisture absorption and sweat guide performance. The polyester fabric prepared by weaving the moisture-absorbing and sweat-guiding polyester fibers has good wearability.

The invention relates to the technical field of high polymer material processing, and discloses an efficient polyester fiber continuous production method based on multi-screw cooperation, which comprises the following steps: S1, raw material pretreatment and conveying: carrying out multi-stage filtration on a polyester raw material, and simultaneously directly conveying supercritical fluid to a feed port of a multi-screw extruder through a closed pipeline; s2, adding a catalyst: adding an organic metal complex catalyst before the polyester raw material enters a reaction extrusion stage; s3, carrying out multi-screw synergistic reaction; s4, data acquisition and analysis; s5, performing dynamic adjustment and feedback; s6, separating and recycling; and S7, spinning and post-processing. Through cooperation of multiple screws and the supercritical fluid and the catalyst, impurities in the raw materials can be dissolved, the activation energy of the reaction can be reduced, the purity of the raw materials can be improved, the viscosity of the materials can be reduced, the flowability is improved, uniform mixing of the raw materials and the catalyst is promoted, the reaction activity is remarkably enhanced, and a foundation is laid for subsequent efficient polymerization reaction; the quality and the production efficiency of the polyester fibers are improved.

The utility model relates to the technical field of chemical fiber production, in particular to a melt cooling device of a direct spinning melt conveying system, a melt cooler is arranged on a conveying pipeline in the direct spinning melt conveying system, the melt cooling device further comprises an ethylene glycol evaporator of a polyester device, and a heating medium pipeline and a refrigerant pipeline are arranged on the ethylene glycol evaporator. The refrigerant pipeline and the heating medium pipeline are connected to the melt coolers, a heating medium pump is arranged on the heating medium pipeline, the heating medium pipeline is connected to the refrigerant pipeline corresponding to each melt cooler through an adjusting pipeline, and an adjusting valve group is arranged at the joint of the adjusting pipeline and the refrigerant pipeline and used for adjusting the temperature of a refrigerant medium. The cooling medium generated by the ethylene glycol evaporator of the polyester device is used for cooling the melt in the melt cooler, and the heating medium generated by the melt cooler is used for heating the ethylene glycol evaporator, so that the full utilization of energy is realized, the energy consumption waste is reduced, and the equipment cost and the production cost are reduced.

The utility model belongs to the technical field of fiber production, and particularly relates to a fiber spinning device which comprises a spinning box, a static mixer is fixedly arranged at the top of the spinning box, a booster pump is fixedly arranged at the top of the static mixer, a material guide pipe is arranged at the top of the booster pump, and a spinning assembly is arranged in the spinning box. The temperature detector, the central controller, the alarm, the guide plate, the conductive block, the transverse plate and the push rod motor are arranged, the temperature detector monitors the temperature in the spinning box in real time and transmits the temperature data to the central controller, and when the temperature in the spinning box is lower than or higher than the preset temperature, the central controller starts the push rod motor, so that the temperature in the spinning box is monitored. The push rod motor pushes the guide plate, when the conductive block at the top of the guide plate is attached to the positive pole, the alarm is powered on to give an alarm, and related personnel can know that the temperature in the equipment does not reach the standard in the first time, so that corresponding measures can be taken in time, the breakage rate of subsequent processing is reduced, and the production quality of fibers is ensured.

To provide a fiber filler that can maintain repulsion and aging resistance of the filler for a long time and extend its service life.SOLUTION: A fiber filler includes at least two filler zones, each of which is formed by winding and stacking fibers. The hardness of each filler zone varies. The filler zones can be set in layers, in the same layer in different regions, or a combination of both. By utilizing multiple independent filler zones made up of layered fiber base layers, and subsequently assembling these zones with different hardnesses into a single unit, the present invention allows flexible control of the hardness characteristics of different areas of the fiber filler. This maintains different hardness characteristics from the inside out, improving the deformation smoothness of cushions for household decoration, and meeting the needs of various users.SELECTED DRAWING: Figure 1

The invention relates to the technical field of control systems, in particular to a high-strength polyethylene fiber melt flow control system and method. Comprising a melt conveying unit, a pressure adjusting unit, a temperature control unit, a flow monitoring unit and a central control unit, the melt conveying unit is used for conveying high-strength polyethylene fiber melt; the pressure adjusting unit is arranged in a pipeline of the melt conveying unit and used for adjusting melt conveying pressure. The temperature control unit is used for controlling the temperature in the melt conveying process; the flow monitoring unit is arranged at the tail end of the melt conveying unit and used for monitoring the melt flow in real time; the central control unit is electrically connected with the pressure adjusting unit, the temperature control unit and the flow monitoring unit, receives monitoring data of the flow monitoring unit and conducts coordinated regulation and control on the pressure and temperature of the melt through the pressure adjusting unit and the temperature control unit according to preset flow parameters. The flow of the high-strength polyethylene fiber melt is accurately controlled.

The invention relates to the technical field of spinning preparation, and discloses cool color master batch gradient blended spinning and a preparation method thereof.The preparation method comprises the steps that the proportion of cool master batches and color master batches is obtained, and the cool master batches and the color master batches are prepared; the preparation method comprises the following steps: performing nano coating treatment on a cool master batch and a color master batch to obtain an optimal synergistic ratio of the cool master batch and the color master batch, dynamically adjusting a blending ratio and a process path, performing programming regulation and control on a cool degree and color shade to execute a partitioned melting and mixing strategy, and performing staged functional component mixing; a gradient color distribution strategy is executed, material distribution in the fibers is adjusted, annular airflow is adopted for cooling, the cooling speed and the cooling flow direction are controlled, and the melt is rapidly shaped; comparing the actual parameters of the generated fiber structure with the target performance demand parameters, and judging whether the color distribution uniformity, the cool feeling performance index and the structural integrity meet preset standards or not; according to the scheme, the diversified requirements of the market for cool feeling and color can be better met.

The invention belongs to the technical field of polyester fiber spinning, and discloses a polyester fiber spinning device and a processing method thereof.The polyester fiber spinning device comprises a shell, a metering pump fixed to the top of the shell and an air cooling heat dissipation part located at the bottom of the shell, a conveying assembly is fixedly connected to the interior of the shell in a sleeved mode, and the bottom of the conveying assembly fixedly communicates with a distribution assembly. Staggering is completed by means of left-right deflection of the upper-layer spinning assembly and the lower-layer spinning assembly, after moving and staggering are conducted through a first adaptation groove and a second adaptation groove in the spinning assemblies, the first adaptation groove is aligned and communicated with the lower hole, the second adaptation groove is aligned and communicated with the upper hole, and flushing water guided into the first adaptation groove and the second adaptation groove is utilized for flushing the upper hole and the lower hole. According to the spinneret assembly, flushing and cleaning from inside to outside are carried out towards the spray holes in the upper side and the lower side in an isolated mode along the interior of the spinneret assembly, on one hand, blocking objects in the spray holes are cut off when the deflected lower half spinneret plate rotates, on the other hand, a flushing mode from inside to outside exists, and the final flushing effect is improved.

The invention discloses a silk-like FDY fiber and a preparation method thereof.The method comprises the steps that 1-3 wt% of modified zinc oxide whiskers are added into polyester melt through an online adding system, then the melt is extruded out of a spinning assembly, monofilaments with the fineness being 0.5-1 dtex are obtained, and the silk-like FDY fiber is obtained through cooling, oiling, pre-interlacing, hot roller drafting, main interlacing and winding in sequence; hot rollers for hot roller drafting are sequentially HR1, HR2, HR3, HR4 and HR5, the temperature of the HR1, the temperature of the HR2 and the temperature of the HR3 are 82 + / -2 DEG C, the temperature of the HR4 and the temperature of the HR5 are 132 + / -2 DEG C, the draft multiple between the HR1 and the HR2 is 1.01-1.06, the draft multiple between the HR2 and the HR3 is 1.08-1.12, and the draft multiple between the HR3 and the HR4 is 1.20-1.32. The silk-like FDY fiber is good in dyeing performance, can be dyed in dark color, is high in strength, and is not liable to generate broken filaments and broken filaments.

Method for the production of cellulose yarns from recycling cellulose material, wherein the method includes the following steps: (a) dissolution of the recycling cellulose material in a molten ionic liquid; (b) adapting the conditions such that active substances dissolved or dispersed in the molten ionic liquid or generated in situ in the molten ionic liquid act to degrade non-cellulose material initially contained in the recycling cellulose material and contained in the molten ionic liquid due to the dissolution of the recycling cellulose material, wherein the active substances can already be present during (a) or can be added after (a) and before or during (b).

The invention discloses a differential shrinkage mixed fiber polyester one-step processing technology, which comprises the following steps: after final shrinkage molding of a PET polyester melt through a polyester final shrinkage kettle, injecting the PET polyester melt into a spinning manifold through a melt filter, a booster pump, a melt conveying pipeline, a cooler and a static mixer in sequence; after being distributed, melts in the spinning box body are respectively shunted into a first metering pump and a second metering pump to be injected into corresponding spinning assemblies for feeding; after one half of the spinning assembly discharges filaments, POY tows are obtained through circular blowing cooling and oil nozzle oiling, the other half of the tows enter IBox five hot rollers through a GR0 draw-off godet to be stretched to form FDY tows, and the FDY tows and the POY tows enter a pre-network at the same time to be subjected to network fiber mixing to form preformed ITY tows; and then sequentially entering a GR2 draw-off godet, a main network and a GR3 draw-off godet, carrying out full-automatic integrated winding and doffing to form ITY tows, and finally carrying out quality inspection, packaging and warehousing. The method has the remarkable advantages of being short in technological process, low in energy consumption, high in production efficiency, uniform and stable in quality and high in additional value, and the differential shrinkage rate can be flexibly adjusted.

The invention relates to the technical field of fibers, in particular to durable antibacterial polyamide composite fibers and a processing technology thereof.The composite fibers comprise, by weight, 70%-90% of polyamide base materials, 5%-20% of antibacterial agents and 2%-5% of dispersing agents, according to the durable antibacterial polyamide composite fiber, the silver zeolite antibacterial agent is adopted, the content of silver ions is appropriate, the silver ions are distributed in a gradient mode, long-acting antibacterial performance is guaranteed, the silver zeolite antibacterial agent is evenly dispersed in the fiber and regularly arranged in a three-dimensional space, the consistency of different positions is high, bacteria are effectively inhibited, and the durability of the antibacterial polyamide composite fiber is improved. The nylon antibacterial fiber is suitable for antibacterial textiles, antibacterial agent distribution of the fiber is stable, antibacterial uniformity and durability are guaranteed due to the radial and length direction characteristics, meanwhile, the molecular weight and molecular chain structure of the nylon base material provide a good strength and toughness basis for the fiber, the length and distribution of the fiber are reasonable, the shape of the cross section is regular, and stress is uniform when the fiber is stressed.

The invention discloses a skin-core type composite polyethylene fiber production device and method.The skin-core type composite polyethylene fiber production device comprises a lower box body, an upper box body is installed at the top end of the lower box body, a top frame is installed at the top end of the upper box body, a reciprocating mechanism is arranged at the top end of the top frame and comprises a connecting rod, and the connecting rod is installed at the top end of the top frame through a support; and rotating discs are mounted on the two sides of the connecting rod. The lifting rod does reciprocating lifting motion in the rotating process of the rotating column, that is, the lifting rod is matched with the rotating shaft in rotation to drive the top frame to rotate, so that the lifting rod can synchronously rotate while performing reciprocating lifting, and the stirring assembly matched with the bottom of the lifting rod for use can continuously contact with raw materials at different heights and positions; a single stirring path is changed, the vortex phenomenon caused by one-way stirring is avoided, inertia inhibition is achieved, and therefore raw materials, auxiliaries and solvents can be fully mixed.

The invention belongs to the field of high-performance materials, and discloses a high-thermal-conductivity PBO fiber and a preparation method thereof, and the preparation method comprises the following steps: (1) preparing a PBO polymer solution with a conventional molecular weight; (2) preparing an ultra-high molecular weight PBO polymer solution; (3) mixing the two PBO polymer solutions in a double-screw extruder according to a certain proportion to obtain a PBO spinning solution; (4) preparing as-spun PBO fibers by adopting a dry-wet liquid crystal spinning process and a condensed state structure regulation and control means; and (5) washing, drying, oiling and winding the as-spun PBO fiber to obtain the high-thermal-conductivity PBO fiber. According to the method, a small amount of the ultra-high molecular weight PBO polymer is added into the conventional spinning solution, the heat conduction performance of the PBO fiber is remarkably improved through the induced orientation crystallization effect of an ultra-high molecular weight PBO long chain, and the method has good application prospects in the field of high-power radio frequency microwave circuits with high requirements for heat dissipation capacity.

The invention discloses an integrated rheology detection and automatic control method and device. The method comprises the following steps: S1, acquiring a viscosity detection value of slurry; s2, the viscosity detection value of the slurry is compared with a viscosity set value, if the viscosity difference value exceeds a set range, the viscosity is dynamically adjusted through a pre-established logic control model, and the logic control model is used for adjusting the viscosity difference value within the set range by adjusting model factors related to the viscosity; the model factors include a temperature factor and a pressure factor associated with viscosity. The temperature, the pressure and the rotating speed are dynamically adjusted through the logic control model, so that the viscosity is adjusted; through multi-parameter cooperative control, the rheological fluctuation amplitude of the slurry can be greatly reduced, the consistency of the slurry is improved, and the spinning spinnability and the strength uniformity of tows are improved.

The present application relates to a cord comprising para-aramid fibers, a method of manufacturing the same, a reinforcing material comprising the cord, and a tire. Specifically, since the cord comprises para-aramid fibers having a large crystal size and a high degree of crystallinity and thereby exhibiting excellent mechanical properties, which has high resistance to external force deformation, can be effectively used as a tire reinforcing material.

The utility model discloses composite simulated fur fiber spinning equipment, and relates to the field of polyester filament yarn production.According to the composite simulated fur fiber spinning equipment, a first raw material is metered into a first raw material and a second raw material with different deniers through two metering pumps in a feeding mechanism, the first raw material enters a first cavity through a pipeline and then is sprayed out through a first spinning part at the bottom of the first cavity, and the second raw material enters a second cavity through a pipeline; a second raw material enters a second cavity through the other pipeline and then is sprayed out through a second spinning part at the bottom of the second cavity, meanwhile, a second raw material is sprayed out through the other feeding mechanism, and due to the fact that the component sections of the first spinning part and the second spinning part are different, the denier sections of the sprayed first raw material and the second raw material are different. According to the utility model, two different denier cross sections can be sprayed in one material distributing assembly, so that the technical problem that the existing fiber manufacturing equipment cannot manufacture various different denier cross section fibers in the production process at the same time is solved, and the technical effect that the various different denier cross section fibers can be manufactured in the production process at the same time is achieved.

The utility model belongs to the technical field of spinning, and discloses a spinning device based on liquid crystal polyarylate fibers, which comprises a support base, a screw conveyor positioned in the middle of the support base, and a mixing structure positioned above the screw conveyor, the mixing structure comprises two mounting frames mounted outside the screw conveyor, a stirring barrel mounted at the tops of the two mounting frames and a servo motor located below the stirring barrel, the mixing structure is matched with the screw conveyor, liquid crystal polyarylester fibers and corresponding additives are placed in the stirring barrel, and the liquid crystal polyarylester fibers and the corresponding additives are uniformly mixed. And then the servo motor is started to drive the meshing wheel A tightly connected with the servo motor to quickly and stably rotate, meanwhile, the meshing wheel A drives the meshing wheel B and the meshing wheel C to rotate, and in the high-speed rotation process of the meshing wheel A and the meshing wheel C, the outer rod and the inner rod which are connected with the meshing wheel A and the meshing wheel C can present the coaxial reverse rotation effect, so that strong and complex shearing force is generated.

The utility model discloses a melt filtering device meeting double-screw feeding, and relates to the technical field of non-woven fabrics, the melt filtering device meeting the double-screw feeding comprises a filter main body, one side of the filter main body is provided with two melt inlet and outlet seats, and the two melt inlet and outlet seats are arranged on the other side of the filter main body. Discharging switching valves are arranged at the front end and the rear end, close to the top end, of the melt inlet and outlet seat, and feeding switching valves are arranged at the front end and the rear end, close to the bottom end, of the melt inlet and outlet seat. The problems that in the prior art, part of slices in a large drying tower need to be blown to a small drying tower for secondary drying and heat preservation, then melt conveying is conducted through a small screw extruder and a small filter, the distance between the large melt filter and the small melt filter is long, temperature control cannot be completely consistent, and electric energy and heat energy losses are large are solved.

A meltblown system includes a die including a die inlet end to receive molten polymer from a polymer source, a cavity located downstream from the die inlet end through which the molten polymer flows, and a die outlet end to receive the molten polymer from the cavity and deliver to outlet orifices at the die outlet end. A fluid supply includes a channel that delivers fluid to the die outlet end to attenuate fibers formed from molten polymer emerging from the die outlet end. The fluid supply provides fluid at a temperature T2 that differs from a temperature T1 of the molten polymer within the cavity, and the meltblown system is configured to independently maintain the molten polymer within the cavity at the temperature T1 during operation of the meltblown system.

Disclosed is a fiber forming device, which is highly suitable for producing a nonwoven web with excellent barrier properties. In one aspect, the fiber forming device can be used to produce a meltblown web or a co-formed web. The fiber forming device includes a die having multiple rows of polymer nozzles for forming fibers. An air flow path is positioned on either side of the multiple rows of polymer nozzles. Additionally, the air flow path is positioned between the multiple rows of polymer nozzles. The air flow path produces a refined air flow, which refines the fibers produced by the polymer nozzles and guides the fibers onto a forming surface for forming a nonwoven web.

The utility model relates to the technical field of coating mechanisms, in particular to a supply coating mechanism of a nanofiber electrostatic spinning machine, which comprises a plurality of metering pumps, a plurality of liquid inlet pipes and an adjusting rotating mechanism, and the adjusting rotating mechanism comprises a rotating column, a rotating frame, a driving assembly, a plurality of coating blocks, a plurality of coating pipes, a plurality of dismounting assemblies and an auxiliary assembly. The rotating column and the driving assembly are installed in the electrostatic spinning machine, the number of the coating blocks is selected according to needs, the rotating frame is inserted, the multiple electrostatic spinning pieces are embedded into the multiple coating grooves respectively, the driving assembly is fixed and started through the multiple disassembling and assembling assemblies respectively, and under cooperation of the auxiliary assembly, the rotating frame rotates with the rotating column as a rotating shaft; the multiple coating blocks are driven to rotate, the multiple metering pumps are started, and polymer solutions are injected into the multiple coating grooves through the multiple liquid inlet pipes and the multiple coating pipes correspondingly, so that supply coating is conducted on multiple pieces of electrostatic spinning, and the effect of improving the adaptability of the mechanism is achieved.

The utility model discloses a spinning box for monofilament production, which comprises a box shell, a distribution mechanism, a plurality of spinning units and a heating medium mechanism, wherein a heating cavity is formed in the box shell, and the distribution mechanism, the spinning units and the heating medium mechanism are mounted on the box shell. The distribution mechanism comprises a total distribution head and a plurality of metering components which are mounted on the box shell, and a plurality of distribution passages which are communicated between the total distribution head and the plurality of metering components; the total distribution head is configured to uniformly distribute a melt extruded by the extrusion equipment to the plurality of metering components through the plurality of distribution passages; the plurality of spinning units are in one-to-one correspondence with the plurality of metering components, each spinning unit comprises a plurality of spinning ports for outputting the melt, and each metering component is configured to uniformly distribute the melt conveyed by the distribution passage to the plurality of spinning ports; the heating medium mechanism comprises a heating medium inlet pipe and a heating medium return pipe which are communicated with the heating cavity, and a plurality of electric heating rods arranged on the box shell in a penetrating manner; the multi-head filament spraying device can uniformly spray filaments in a multi-head mode and is suitable for production of monofilaments of different varieties.