Spin pack assembly

A spin pack assembly for use in melt spinning elastic fibers. The spin pack assembly includes a circular breaker plate having a center aperture and several circular patterns of apertures with each circular pattern having a plurality of apertures. Each circular pattern is located concentrically about an axis of the center aperture. The apertures in the outer circular patterns have a greater diameter than the apertures in the inner circular patterns. The spin pack assembly also has a spinneret plate where the exit aperture of the spinneret plate is recessed in the body of the spin pack assembly.

PROCESS AND APPARATUS FOR SPINNING FIBRES AND IN PARTICULAR FOR PRODUCING A FIBROUS-CONTAINING NONWOVEN

The apparatus () is used for producing melt-blown fibres (MF). It comprises a die head () with several spinning orifices, means () for extruding at least one melted polymeric material through the spinning orifices of the die head () in the form of meltblown filaments (f), and means () for blowing a hot primary gas flow (F) towards the outlet of the die head () in order to draw and attenuate the polymeric filaments (f) at the outlet of the die head, and a drawing unit () that is positioned below the die head (), and that is adapted to create an additional gas flow (F) that is oriented downstream to further draw and attenuate the meltblown filaments (f). 186-. (canceled)87. An apparatus comprising a die head with several spinning orifices , means for extruding at least one melted polymeric material through the spinning orifices of the die head in the form of filaments , and a drawing unit positioned below the die head , and adapted to create a gas flow that is oriented downstream for drawing and attenuating the filaments.88. The apparatus of claim 87 , wherein the drawing unit is adapted to break the filaments into discontinuous fibres.89. The apparatus of claim 88 , wherein the drawing unit is adapted to break the filaments into discontinuous fibres having an average length higher than 20 mm claim 88 , preferably higher than 40 mm.90. The apparatus of claim 88 , wherein the drawing unit is adapted to break the filaments into discontinuous fibres having an average length of not more than 250 mm claim 88 , and preferably of not more than 150 mm.91. The apparatus of claim 87 , wherein the drawing unit comprises a channel that is positioned below the die head claim 87 , in such a way that the filaments delivered by the die head can pass through the channel claim 87 , and air blowing means adapted to blow the gas flow inside the channel.92. The apparatus of claim 91 , wherein the drawing unit is adapted to create above the drawing unit a sucked air flow that enters into ...

Multiple fiber spinning apparatus and method for controlling same

A multiple fiber spinning apparatus and a method of controlling the same. The apparatus includes an extruding unit, a spin block unit and a spinning nozzle unit. The extruding unit includes extruders that melt, extrude and transfer polymer materials. The spin block unit includes a gear pump unit which has gear pumps connected to each of the extruders. The gear pumps receive the polymer materials from the corresponding extruders and discharge the polymer materials. The spin block unit further includes a flow passage unit which has flow passages connected to the respective gear pumps. The spinning nozzle unit includes spinning nozzles, each of which is connected to one of the gear pumps of each extruder by the corresponding flow passage, so that each spinning nozzle receives the molten polymer materials and spins the polymer materials into a fiber.

SPINNERET FOR SPINNING THREADS, SPINNING DEVICE FOR SPINNING THREADS AND METHOD FOR SPINNING THREADS

The invention relates to a spinneret for spinning threads from a spinning mass—in the form of a melt or solution of natural or synthetic origin—comprising a rotationally symmetrical spinneret. The rotationally symmetrical spinneret inner part is surrounded at least partially by a rotationally symmetrical outer part, wherein in the longitudinal direction between the spinneret inner part and outer part an insulating chamber is formed, in which a gas, preferably air, is received in order to form an insulating gas layer. The invention further relates to a spinning device for spinning threads from a spinning mass, comprising a spinneret part and a gas nozzle part arranged at a distance from the spinneret part. A plurality of spinnerets according to the invention are inserted in the spinneret part and project from the spinneret part, facing the gas nozzle part, and the gas nozzle part comprises a plurality of gas nozzles associated with the spinnerets. The gas nozzles are designed as acceleration nozzles for a gas flow that is conducted through the respective gas nozzle and encompasses the monofilaments. Said spinnerets are used in a method for producing spunbonded materials or yarns from polymers of natural or synthetic origin, in order to build up said materials or yarns from extremely fine threads having an average thread diameter of less than 1 μm. The threads from the individual spinnerets can also be collected using conventional winding mechanisms to form yarns on bobbins. 116.-. (canceled)17. Arrangement of a spinneret and an acceleration nozzle for a spinning device for spinning threads from a spinning mass by splitting a monofil which is spun from the spinneret , the spinneret having a spinneret inner part and an outer part which surrounds at least partially the spinneret inner part , the spinneret inner part , in the longitudinal direction thereof , having a channel for supplying spinning mass to a spinneret tip part having at least one exit boring ,whereinthe ...

Method For Producing A Multifilament Composite Thread And Melt Spinning Device

The invention relates to a device for the production of strand-shaped products such as synthetic bands, fiber strands, monofilaments, or films, which are extruded from a polymer melt. The device comprises an extrusion device, a cooling device, several rolling feed units and several processing devices mounted between the rolling feed units. In order to obtain short control paths and compact machine units, the processing devices according to the invention are arranged in tiers one above the other, wherein the rolling feed units face each other at both ends of the processing devices so that the product passes through the processing devices in the opposite direction. 1. A method for the production of a multifilament composite thread in a melt spinning process comprising;extruding numerous of filament strands with a plurality of spinnerets;pulling off the filament strands from the spinnerets and dividing the filament strands into a plurality of filament bundles;drawing the filament bundles and combining the filament bundles to form the composite thread,wherein the filament bundles pass through a plurality of preparation stations for wetting after cooling such that the filament bundles pass through a first preparation station with or without, selectively, a supplementary wetting.2. The method according to wherein the filament bundles receive a main wetting in a second preparation station after the drawing.3. The method according to wherein the main wetting of the filament bundle is applied with the same or different fluid applications to each of the filament bundles.4. The method according to wherein after the dividing of the filament strands claim 1 , the filament bundles claim 1 , without a supplementary wetting are twisted by means of an air treatment during the pulling-off.5. The method according to wherein the filament bundles are drawn individually or collectively adjacent to one another with an S-guidance or Z-guidance through a plurality of godets.6. The method ...

Spinneret Bundle

A spinneret bundle for producing fibers from a polymer melt includes an elongated nozzle plate that has a feed channel on an upper face and at least one row of nozzle bores that are arranged next to one another on a lower face. A distributing plate lies on the upper face of the nozzle plate and has a distributing chamber that faces the feed channel and a melt inlet that is connected to the distributing chamber. A perforated plate with a plurality of through-bores is provided between the distributing chamber of the distributing plate and the feed channel of the nozzle plate in order to achieve a redistribution and uniformity of the melt when the melt is introduced into the feed channel. 1. A spinneret bundle for producing fibers from a polymer melt comprising:a. an elongated nozzle plate that has a feed channel on an upper face and at least one row of nozzle bores that are arranged next to one another on a lower face, wherein the nozzle bores are fluidly connected with the feed channel and with a distributing plate provided on the upper face of the nozzle plate,b. at least one distributing chamber facing the feed channel and having a melt inlet connected with the distributing chamber; and,c. a perforated plate with a plurality of through-bores arranged between the distributing chamber of the distributing plate and the feed channel of the nozzle plate, wherein the through-bores in the perforated plate are divided into multiple bore groups such that the through-bores of at least two of the bore groups within the perforated plate have inclination angles (α, β) that are different with respect to perpendicular bisectors in such a way that the through-bores of the bore groups at least partly cross one another at a distance from one another within the perforated plate.2. The spinneret bundle according to claim 1 , wherein the through-bores within the perforated plate are formed by two adjacent rows of holes that run parallel to the at least one row of nozzle bores.3. The ...

PROCESS AND APPARATUS FOR PRODUCING NANOFIBERS USING A TWO PHASE FLOW NOZZLE

The disclosure relates to an apparatus and method for producing nanofibers and non-woven nanofibrous materials from polymer melts, liquids and particles using a two-phase flow nozzle. The process comprises supplying a first phase comprising a polymer melt and a second phase comprising a pressurized gas stream to a two-phase flow nozzle; injecting the polymer melt and the pressurized gas stream into a mixing chamber within the two-phase flow nozzle wherein the mixing chamber combines the polymer flow and pressurized gas into a two-phase flow; distributing the two-phase flow uniformly to a converging channel terminating into an channel exit wherein the converging channel accelerates the two-phase flow creating a polymeric film along the surface of the converging channel and fibrillating the polymeric film at the channel exit of the converging channel in the form of a plurality of nanofibers. 1. A process for producing nanofibers from a two-phase nozzle comprising the steps of:a) supplying a first phase comprising a polymer melt and a second phase comprising a pressurized gas stream to a two-phase flow nozzle;b) injecting the polymer melt and the pressurized gas stream into a mixing chamber within the two-phase flow nozzle wherein the mixing chamber combines the polymer flow and pressurized gas into a two-phase flow;c) distributing the two-phase flow uniformly to a converging channel terminating into an channel exit wherein the converging channel accelerates the two-phase flow creating a polymeric film along the surface of the converging channel;d) fibrillating the polymeric film at the channel exit of the converging channel in the form of a plurality of nanofibers.2. The method of claim 1 , wherein the pressurized gas stream is heated to a temperature above the melting temperature of the polymer.3. The method of wherein the two-phase flow is rotational.4. The method of claim 1 , wherein the converging channel has a conical geometry.5. The method of claim 1 , wherein ...

FIBERS AND FIBER SPINNERETS

A method including the steps of extruding a melt including an amorphous polymer composition through a spinneret under a pressure of from 400 to 1500 psi to produce a spun fiber; collecting the spun fiber on a feeding roll without drawing the spun fiber; producing a solidified fiber from the spun fiber. The solidified fiber can have a dpf within a range of from greater than 0 to 2.5 dpf, and a shrinkage less than or equal to 2%. The method can also include collecting the solidified fiber onto a spool without subjecting the solidified fiber to a drawing step. A spinneret for producing fibers of at most 2.5 dpf from a composition comprising an amorphous polyetherimide polymer, the spinneret comprising a die having a plurality of round melt channels but no distribution plates. Fibers produced by the method and from the spinneret are also disclosed. 1. A method comprising: 'wherein the melt comprises an amorphous polymer composition;', 'extruding a melt through a spinneret under a pressure of from 400 to 1500 psi to produce a spun fiber,'} wherein the solidified fiber has a dpf within a range of from greater than 0 to 2.5 dpf,', 'wherein the solidified fiber has a shrinkage less than or equal to 2%; and, 'collecting the spun fiber on a feeding roll without drawing the spun fiber, producing a solidified fiber from the spun fiber,'}winding the solidified fiber onto a spool without subjecting the solidified fiber to a drawing step.2. The method according to claim 1 , wherein the amorphous polymer composition has a melt flow rate of from 4 to 18 g/10-min.3. The method according to claim 1 , wherein the pressure is from 400 to 1000 psi.4. The method according to claim 1 , further comprising collecting the fiber onto the spool without an annealing step.5. The method according to claim 1 , wherein the solidified fiber is produced without a forced-air cooling step.6. The method according to claim 1 , wherein the process further comprises heating the spun fiber after it exits the ...

METHOD OF MAKING A DEVICE FOR USE IN A MICROFIBER AND/OR NANOFIBER PRODUCING SYSTEM

Described herein are apparatuses and methods of creating fibers, such as microfibers and nanofibers. The methods discussed herein employ centrifugal forces to transform material into fibers. Apparatuses that may be used to create fibers are also described. Described herein are fiber producing devices that have various types of outlet elements coupled to the fiber producing device. 11235-. (canceled)1236. A method of making a device for use in a microfiber and/or nanofiber producing system , the method comprising:obtaining a first member, the first member comprising a first member coupling surface, the first member coupling surface comprising one or more grooves extending along the width of the first member coupling surface;obtaining a second member, the second member comprising a second member coupling surface and a coupling member, the second member coupling surface comprising one or more grooves extending along the width of the second member coupling surface;coupling the first member coupling surface to the second member coupling surface to form a body, wherein the first member and the second member together define an internal cavity of the body; andwherein one or more grooves of the first member coupling member are substantially aligned with one or more grooves of the second member coupling member to form one or more openings extending from the interior cavity to an outer surface of the body;wherein, during use, rotation of the body causes material in the body to be passed through one or more openings to produce microfibers and/or nanofibers.1237. The method of claim 1236 , wherein the body is cylindrical.1238. The method of claim 1236 , wherein the first member comprises a first member opening claim 1236 , wherein material is added to the internal cavity through the first member opening.1239. The method of claim 1236 , wherein the first member is ring shaped claim 1236 , wherein material is added to the internal cavity through a central opening of the ring ...

Elastic fibre dry spinning mechanism and maintenance control method for spinning assembly

The present invention provides an elastic fiber dry spinning mechanism and a maintenance control method for a spinning assembly. The elastic fiber dry spinning mechanism includes: a spinning assembly ( 1 ) including a temperature control portion ( 13 ) and a spinneret portion ( 14 ), which are detachably overlapped with each other; and a rotary movement control portion used for driving the spinning assembly to ascend and descend, translate and rotate around a translation direction so as to change the orientation of the spinning assembly into an orientation facilitating the maintenance of the spinneret portion. By adoption of the spinning mechanism and the maintenance control method therefore, online replacement and other maintenance of the spinneret portion are convenient and quick, and the efficiency is high.

MULTI-ZONE SPINNERET, APPARATUS AND METHOD FOR MAKING FILAMENTS AND NONWOVEN FABRICS THEREFROM

A spinneret, apparatus, and method are provided for making filaments for fibrous nonwoven fabrics with more uniform filament and fabric formation while minimizing filament breaks and hard spot defects in webs and fabrics made therefrom. The spinneret has a spinneret body that has an overall length to hydraulic diameter ratio and defines orifices that extend through the spinneret body, wherein the orifices comprise capillaries that open at a face of the spinneret body for polymer filament extrusion therefrom, wherein the capillaries are arranged in a plurality of different rows at the face of the spinneret body, and wherein the plurality of different rows are arranged into a plurality of different zones at the face of the spinneret body. A spinneret body of the spinneret can have an overall length to hydraulic ratio of at least 3 percent and/or a zone-to-zone length to hydraulic ratio of at least 2% and/or the hydraulic diameters, lengths, and length to hydraulic diameter ratios can progressively increase or decrease zone-to-zone for at least three different zones of capillaries, which can be applied to cross-flow quench or quench from a single-side. The spinneret body is designed to better accommodate differing operational proximity of the various different zones to quench air sources or source at commercially useful throughputs and fiber uniformity. 1. A spinneret for melt-spinning polymeric filaments , comprising: a first zone located centrally at the face of the spinneret body, comprising a plurality of first rows, each of said first rows comprising a plurality of first capillaries, wherein the first capillaries are arranged in a first capillary density, and the first capillaries individually having a first cross-sectional shape, a first hydraulic diameter, a first length, and a first length to hydraulic diameter ratio,', 'a second zone located adjacent to the first zone at the face of the spinneret body, comprising a plurality of second rows, each of said second ...

A METHOD TO PROVIDE MULTIFILAMENT BUNDLES OF MELT SPUN POLYMER FILAMENTS

A method for providing a multifilament bundle of melt spun polymer filaments, the that includes providing a spinning device including at least M extruders for melting M polymers, M groups of spinning stations, each group comprising N spinning stations, each spinning station comprising and a spin pack coupled to a spin pump which receives molten polymer from one of the M extruders and spins a strand of filaments by pushing said polymer through the coupled spin pack, and N transformation stations for bundling M strands of filaments. The method further includes spinning N*M strands of filaments from the spinning stations at a given spin pump output and bundling the strands into N multifilament bundles via the N transformation stations whereby the spin pump outputs are varied over time. 2. The method according to claim 1 , wherein for each of the N transformation stations claim 1 , the sum of the spin pump outputs of the spin pumps is kept substantially constant over time.3. The method according to claim 1 , wherein M is 2 claim 1 , 3 or 4.4. The method according to claim 1 , wherein the M polymers are of a different color.5. The method according to claim 1 , wherein for each of the N transformation stations claim 1 , the sum of the spin pump outputs of the spin pumps providing multifilament strands to the transformation station varies over time in a range of 2.5% v around the average sum of the spin pump outputs of the spin pumps providing multifilament strands to this transformation station.6. The method according to claim 1 , wherein N is in the range of from 2 to 50 or from 2 to 25.7. The method according to claim 1 , wherein each of the spinning stations further quenches the strand of filaments.8. The method according to claim 1 , wherein each of the transformation stations further elongates the bundle of filaments.9. The method according to any one of the preceding claims claim 1 , wherein each of the transformation stations further texturizes the bundle of ...

DIGITAL ELECTROSPINNING ARRAY

An electrospinning system for weaving nanofibers may include a digital array of addressable nozzles electrowetted with a liquid nanofiber source material. Each nozzle in the array may include an individually controllable actuator and electrode for modulating the flowrate and charge of the liquid nanofiber source material. Through selectively applying pressure and voltage to individual nozzles, the location of the nanofiber relative to the array may be controlled through digital signals alone, without having to physically move any component of the electrospinning system. By simultaneously controlling the path of multiple nanofibers within the array, new and complex weaving patterns for braids may be achieved with enhanced strength and other properties at a scale previously unattainable. 1. A system for weaving electrospun nanofibers , the system comprising: an orifice for forming a meniscus of the liquid nanofiber material;', 'an electrode for selectively applying voltage;', 'an actuator for selectively controlling pressure; and', 'a channel in communication with the orifice for feeding liquid nanofiber material to the electrospun nanofibers., 'an array of addressable electrospinning nozzles, the array wettable by liquid nanofiber material, each nozzle including2. The system of claim 1 , further comprising a counter-electrode facing the array of addressable electrospinning nozzles.3. The system of claim 1 , further comprising a controller in communication with the electrodes and actuators within the array.4. The system of claim 1 , further comprising a memory for storing addresses and weaving patterns.5. The system of claim 1 , further comprising a sensor to detect electrospun nanofibers within the array.6. The system of claim 1 , wherein the electrospinning nozzles are laid out as a rectangular grid within the array.7. The system of claim 1 , wherein the electrospinning nozzles have a diameter of about 0.1 to 100 microns.8. The system of claim 7 , wherein the ...

SPINNERET AND METHOD FOR MANUFACTURING FIBER WEB

A spinneret includes: a plate including a plurality of nozzle holes formed therein. In the plates, the plurality of nozzle holes are formed in a substantially rectangular area on a principal surface, the rectangular area includes a non-forming zone that intersects with nozzle hole rows, the non-forming zone continuously extending from one long side of the rectangle to the other long side, and the non-forming zone including no nozzle holes, in nozzle hole rows with which the non-forming zone intersects out of the nozzle hole rows, in each of the nozzle hole rows, the nozzle hole is not formed on a part where the non-forming zone intersects with a position of the regular interval at which the nozzle holes are aligned, and the nozzle hole corresponding to number of the unformed nozzle holes is additionally formed in a short side direction of the nozzle hole row. 1. A spinneret comprising:a plate including a plurality of nozzle holes formed therein; ora plurality of the plates stacked one another in a spinning direction, the plurality of nozzle holes are formed in a substantially rectangular area on a principal surface,', 'nozzle hole rows are aligned at regular intervals in a long side direction of the rectangle, each of the nozzle hole rows including the plurality of nozzle holes aligned at regular intervals in a short side direction of the rectangle,', 'the rectangular area includes a non-forming zone that intersects with the nozzle hole rows, the non-forming zone continuously extending from one long side of the rectangle to the other long side, and the non-forming zone including no nozzle holes,', 'in nozzle hole rows with which the non-forming zone intersects out of the nozzle hole rows, in each of the nozzle hole rows, the nozzle hole is not formed on a part where the non-forming zone intersects with a position of the regular interval at which the nozzle holes are aligned, and the nozzle hole corresponding to number of the unformed nozzle holes is additionally ...

PREPARATION METHODS OF FILTER ELEMENT FOR SWIFT AND HIGHLY EFFICIENT ADSORPTION OF CS

A preparation method of filter element for swift and highly efficient adsorption of Cs includes the following steps: to a substrate material, adding a coupling agent with 1-3 wt % and ammonium phosphomolybdate with 1-10 wt %, based on the weight of the substrate material; heating to 160˜220° C.; stirring and mixing evenly so that the substrate material is combined with ammonium phosphomolybdate; spining through 5 μm micropore, the spun filament forming adsorbent filter element with a thickness of 5-50 mm in the rotational cylinder framework material; evenly coating ammonium phosphomolybdate on the outer surface of the adsorbent filter element; and stabilizing and implementing an aging process by heating to 80-120° C. for 3-12 h. The filter element prepared by this method provides an excellent water permeability, oxidization resistance, long-term immersion in hot water of below 100° C., radiation decomposition resistance, stable adsorption, swift detection, high efficiency and precision. 1. A preparation method of filter element for swift and highly efficient adsorption of Cs , the method comprising:1) mixing a substrate material, a coupling agent with 1-3 wt % and ammonium phosphomolybdate with 1-10 wt %, based on a weight of the substrate material and heating the mixture to 160˜220° C., the substrate material being combined with ammonium phosphomolybdate;2) spinning the material prepared in 1) through 5 μm micropore to form an adsorbent filter element with a thickness of 5˜50 mm in rotational cylinder framework material;3) evenly coating ammonium phosphomolybdate on a surface of the adsorbent filter element obtained in 2) so that ammonium phosphomolybdate is combined with the ammonium phosphomolybdate within the substrate material;4) heating the filter element obtained in 3) to 80˜120° C. for 3-12 h, thereby obtaining the filter element for swift and highly efficient adsorption of Cs.2. The method according to claim 1 , wherein the coupling agent comprises methyl ...

PROCESS OF MELT-SPINNING POLYACRYLONITRILE FIBER

Processes for producing carbon fibre, the filament thereof and pre-oxidized fibre are provided. In one embodiment, the gel spinning of polyacrylonitrile filament is achieved by using small-molecule gelling agent, and the carbon fibre obtained thereby is increased by 15% to 40% in tensile strength and by 20% to 35% in toughness. In another embodiment, the melt spinning process of polyacrylonitrile is conducted by using imidazole type ion liquid as plasticizer, the process reduces environment pollution, is suitable for industrial production and the fibre produced thereby is improved in its strength. In yet another embodiment, polyacrylonitrile pre-oxidized fibre is produced by melt spinning, so low cost and controllable pre-oxidization of polyacrylonitrile can be achieved. In a further embodiment, high strength carbon fibre is manufactured by using polymer thickening agent. In another further embodiment, low cost and controllable pre-oxidization of polyacrylonitrile is achieved by conducting pre-oxidization before spinning, minimizing skin-core structure, so as to produce high performance carbon fibre, and reduce the production cost of carbon fibre greatly. 1. A melt spinning process for producing a PAN-based pre-oxidized fibre , comprising the following steps:a) dissolving a catalyst for pre-oxidation of PAN in an ionic liquid in a weight ratio from 1:100 to 0.01:100 followed by adding PAN powder to obtain a mixture, wherein the weight ratio of PAN powder to ionic liquid is between 1:1 and 1:0.25;b) adding the mixture from step a) to a hopper of twin-screw spinning machine to conduct melting spinning while blowing an oxygen-containing gas into a melting segment of the twin-screw spinning machine, wherein the flow rate of the oxygen-containing gas is between 1 ml/min and 5 ml/min, and the rotational velocity of screw is between 40 and 120 r/min, and the temperature at a feed segment is between 170° C. and 185° C., and the temperature for plasticizing is between 185° C ...

GUSSETED ROTARY SPINNERS FOR PRODUCING FIBER FROM MOLTEN MATERIAL

Rotary spinner apparatuses, systems and methods for producing fibers from molten materials are disclosed. Certain exemplary embodiments include substantially net shape single pattern rotary spinner castings that include gussets extending radially inward from a side wall and axially upward form a lower wall to an upper wall. A dispenser may be structured to supply molten material in a downward direction through a hollow interior of the casting to the lower wall. A plenum may be structured to direct elevated temperature gas toward an exterior surface of the casting. 1. A centrifugal spinner apparatus for producing fibers from molten material comprising:a substantially net-shaped single-pattern casting including a base extending radially outward to a substantially circular periphery extending about a central axis line, a sidewall extending about the circular periphery in an axially upward direction from the base, an upper flange extending radially inward from the sidewall, and a plurality of gussets extending radially inward from the sidewall and extending axially from the base to the upper flange;wherein the casting defines a plurality of pockets bounded by surfaces of the base, the sidewall, the flange, and respective pairs of the plurality of gussets and opening inwardly to a central structural void, and a plurality of holes are formed through portions of the sidewall bounding the plurality of pockets.2. The centrifugal spinner apparatus of further comprising a shaft extending along and rotatable about the central axis line claim 1 , the shaft being coupled with the base and extending from a side of the base opposite the central structural void.3. The centrifugal spinner apparatus of wherein the shaft is coupled with the base by first and second clamping members and wherein the first clamping member contacts the upper surface of the base.4. The centrifugal spinner apparatus of further comprising a dispenser structured to direct a stream of molten material in a ...

MULTI-ROW MELT-BLOWN FIBER SPINNERET

A multi-row melt-blown fiber spinneret () enables stacking rows () of polymer outlet orifices (36) more closely together than is achievable with conventional melt-blown fiber spinnerets. The fiber spinneret configuration also enables dense side-by-side packing of the polymer outlet orifices. The fiber spinneret is configured so that air knife channels () and individual intricate small air knife passage feeds, together with their associated melt flow channels (), are formed in the same body member. The rows of polymer outlet orifices are supplied with a polymer melt by a single polymer inlet (), which delivers the polymer melt to the individual polymer melt flow channels. The air knife channels are directed through the body member, in which the polymer melt flow channels are formed by islands and air flow passage feeds. The body member is constructed by operation of a 3D printer for direct metal printing. 1. A melt-blown fiber spinneret including polymer outlet orifices from which polymer fiber melt filaments emerge , comprising:a body member including a polymer melt inlet surface and a polymer melt outlet surface;multiple polymer melt flow channels formed in the body member, each of the multiple polymer melt flow channels having a polymer melt entrance end in fluid communication with the polymer inlet surface and a polymer melt exit end in fluid communication with the polymer outlet surface;multiple gas knife channels formed in the body member and in fluid communication with the polymer outlet surface;multiple gas passage feeds formed in the body member and connected to different ones of the multiple gas knife channels, each of the multiple gas passage feeds having a gas passage feed entrance end in fluid communication with a gas supply to deliver gas flow to the gas knife channel to which the gas passage feed is connected; anddifferent pairs of the multiple gas knife channels configured to deliver, at the polymer melt outlet surface, the gas flow along opposite ...

SPINNERET, METHOD OF HEATING A SPINNERET AND LYOCELL PROCESS

The present invention relates to a spinneret, and a method of heating a spinneret used for spinning cellulosic filaments from a cellulose solution in a solvent. The invention also relates to a lyocell process employing such a spinneret 1. A steam heatable spinneret , having a rectangular shape with an aspect ratio of more than 2 , comprising at least a top housing , and a nozzle frame and optionally individual nozzle plates within the nozzle frame , wherein at least the top housing and/or the nozzle frame is heated by means of steam.2. The spinneret according to claim 1 , wherein the top housing and the nozzle frame are heated by means of steam.3. The spinneret according to claim 1 , wherein the spinneret further comprises additional means for heating claim 1 , being different from steam heating.4. A method of controlling the temperature within a spinneret having a rectangular shape and an aspect ratio of more than 2 claim 1 , wherein at least the top housing and/or the nozzle frame of the spinneret claim 1 , and optionally individual nozzle plates within the nozzle frame claim 1 , is heated by means of steam.5. A method of producing lyocell filaments claim 1 , employing the spinneret according to .6. The spinneret or method according to claim 1 , wherein the spinneret has an aspect ratio of from 5 to 25.7. The spinneret or method according to claim 1 , wherein steam having a temperature of from 105 to 138° C. and a pressure of from 0.2 to 3.4 bar is employed.8. The spinneret or method according to claim 1 , wherein the top housing and the nozzle frame are made of stainless steel.9. The spinneret or method according to claim 1 , wherein the nozzle block comprises a breaker claim 1 , preferably wherein the breaker is steam heatable.10. The spinneret or method according claim 1 , wherein the spinneret is a multi nozzle plate spinneret claim 1 , wherein the nozzle frame comprises lands which are steam heatable.11. A method of producing lyocell filaments claim 4 , using ...

MELT BLOWING DIE, APPARATUS AND METHOD

A melt blowing die includes a stack of plates including corresponding melt blowing die tip, die body and air functionalities. One or more rows of polymer filament extrusion orifices extend through in a stack direction across multiple plates of a stack. A gas distribution system within the stack has gas outlets are positioned to provide distributed gas flow to contact and attenuate extruded polymer filaments. One of more polymer distribution channels extend longitudinally through multiple plates in the stack direction to supply polymer to each of the rows of extrusion orifices. A polymer distribution channel is open to receive polymer feed only at a longitudinal end. A melt blowing apparatus has a collection substrate movable in a machine direction that is transverse to a stack direction in a melt blowing die. A method for producing fiber-containing material includes melt blowing using a melt blowing die with a stack of plates. 1. A melt blowing die , comprising: polymer filament extrusion orifices including at least one row of extrusion orifices extending in the stack direction across multiple said plates of the stack;', 'a gas distribution system within the stack including gas outlets positioned to provide distributed gas flow to contact and attenuate polymer filaments extruded from the said extrusion orifices of each said row of extrusion orifices; and', 'at least one polymer distribution channel extending longitudinally through multiple said plates in the stack direction, the polymer distribution channel being in fluid communication within the plate stack for supply of polymer to the extrusion orifices of at least one said row of extrusion orifices; and, 'at least one stack of plates stacked in a stack direction, the stack of plates comprisingthe polymer distribution channel is open to receive polymer feed only at a longitudinal end of the polymer distribution channel.2. A melt blowing die according to claim 1 , wherein:each said extrusion orifice of a said row ...

POLYMERIC MATERIALS PROVIDING IMPROVED INFRARED EMISSIVITY

IR-emitting or reflecting polymer fibers are formed by blending a high concentration of IR-emitting or reflecting particles with a thermoplastic polymer and meltblowing fibers which have an average diameter of 20 μ or less. The meltblowing process allows for inclusion of a high concentration of the IR-emitting or reflecting particles, yet allows fibers to be formed. These can be formed into a soft, air-permeable, nonwoven web. The fibers can be monocomponent or bicomponent or multicomponent and can be textured or shaped. 119-. (canceled)20. A nonwoven web comprising meltblown polymeric fibers , said polymeric fibers comprising at least one polymer and at least about 10% by weight of an IR-emitting material , wherein the IR-emitting material has an emissivity of at least about 50% in the range of from about 4 μm to about 15 μm.21. The nonwoven web of claim 20 , wherein the IR-emitting material is a crystalline mineral.22. The nonwoven web of claim 21 , wherein the crystalline mineral is tourmaline.23. The nonwoven web of claim 21 , wherein the crystalline mineral is nepheline syenite.24. The nonwoven web of claim 20 , wherein the IR-emitting material is a non-metallic IR-emitting material.25. The nonwoven web of claim 24 , wherein the non-metallic IR-emitting material is selected from the group consisting of activated carbon claim 24 , carbon nanotubes claim 24 , bamboo charcoal claim 24 , and combinations thereof.26. The nonwoven web of claim 24 , wherein the non-metallic IR-emitting material is bamboo charcoal.27. The nonwoven web of claim 20 , wherein the IR-emitting material has an emissivity of at least about 50% in the range of from about 8 μm to about 11 μm.28. The nonwoven web of claim 20 , wherein the IR-emitting material has a particle size of from about 10 nm to about 10 μm.29. The nonwoven web of claim 20 , wherein the meltblown polymeric fibers comprise at least about 20% by weight of the IR-emitting material.30. The nonwoven web of claim 20 , wherein ...

CAPILLARY TYPE MULTI-JET NOZZLE FOR FABRICATING HIGH THROUGHPUT NANOFIBERS

A capillary type multi-jet nozzle is provided for fabricating high throughput nanofibers by an electrospinning technique. The capillary type multi-jet nozzle includes a cap system with one or more pores and a crew system with a screw groove system. The cap system and the crew system are connected through a cap and crew system. The pores in the cap system are customized in count based on an requirement. The angle between the pores is reduced to make multiple non-interfering and non-hindering jets in less time. A Teflon gasket is used for proper tightening and sealing of the cap system and screw system. The cap system includes knurling at an outer surface for grip. The capillary type multi-jet nozzle is made of a conducting material to withstand a high voltage and is fabricated using micro-machining process. 1. A capillary type multi-jet nozzle for fabricating high throughput nanofibers by an electrospinning technique , the capillary type multi-jet nozzle having a cap system with one or more pores and a crew system with a screw groove system , wherein the cap system and the crew system are connected through a cap and crew system.2. The capillary type multi-jet nozzle of claim 1 , wherein the one or more pores are customizable in count.3. The capillary type multi-jet nozzle of claim 1 , wherein an angle between the one or more pores is reduced/decreased to reduce time in forming multiple non-interfering and non-hindering jets.4. The capillary type multi-jet nozzle of claim 1 , further comprises a Teflon gasket for proper tightening and sealing of the cap system and the screw/crew system.5. The capillary type multi-jet nozzle of claim 1 , wherein the cap system includes knurling at an outer surface of the cap system for grip.6. The capillary type multi-jet nozzle of claim 1 , wherein the capillary type multi-jet nozzle is made of a conducting material to withstand a high voltage.7. The capillary type multi-jet nozzle of claim 1 , wherein an inner wall of the capillary ...

FIBER FOR ARTIFICIAL HAIRS, ARTIFICIAL HAIR, METHOD FOR PRODUCING FIBER FOR ARTIFICIAL HAIRS, AND METHOD FOR PRODUCING ARTIFICIAL HAIR

Disclosed is a fiber for artificial hairs that is given a predetermined shape, the fiber being formed from a synthetic fibroin fiber containing a modified fibroin, and the fiber expanding when placed in a wet state and contracting when dried from a wet state. Also disclosed is a method for producing a fiber for artificial hairs that is given a predetermined shape, the method including retaining a fibroin fiber containing a modified fibroin in a state conforming to a predetermined shape. A wetted fibroin fiber may also be heated while being retained in a state conforming to a predetermined shape. 1. A fiber for artificial hairs that is given a predetermined shape ,the fiber comprising a synthetic fibroin fiber containing a modified fibroin, andthe fiber expanding when placed in a wet state and contracting when dried from a wet state.2. An artificial hair comprising the fiber for artificial hairs according to .3. A method for producing a fiber for artificial hairs that is given a predetermined shape claim 1 , the method comprising retaining a fibroin fiber containing a modified fibroin in a state conforming to a predetermined shape claim 1 , wherein the predetermined shape is a shape including a curved part claim 1 , a linear part claim 1 , or both of these.4. The method according to claim 3 , wherein the fibroin fiber is retained in a state conforming to a shape including a curved part claim 3 , by being wound around a core material.5. The method according to claim 3 , wherein the diameter of the fibroin fiber is more than 30 μm.6. The method according to claim 3 , wherein the fibroin fiber that is retained in the state conforming to a predetermined shape is heated.7. The method according to claim 6 , wherein the fibroin fiber that is retained in the state conforming to a predetermined shape is heated 5 to a temperature below 100° C.8. The method according to claim 3 , further comprising drying the fibroin fiber claim 3 , wherein the dried fibroin fiber is retained ...

SPINNING DEVICE

A spinning device is disclosed. The spinning device includes a tube body, a sleeve component, a jacket tube and a lid. The tube body has a first through orifice in a vertical direction, the sleeve component has a second through orifice for the tube body to be mounted therein to form a fluid passage in between; the jacket tube has a third through orifice for the sleeve component and the tube body to be mounted therein. A first opening and second opening are formed on the wall of the jacket tube, allowing the second opening to be coupled with the fluid passage. The lid is coupled to one end of the jacket tube, and has a forth through orifice, allowing the tube body to rotate with respect to the sleeve tube, jacket tube and the lid, thereby making a the hollow fiber having a spiral passage. 1. A spinning device , comprising:a tube body having a first through orifice in a vertical direction;a sleeve component having a second through orifice in the vertical direction, wherein the tube body is pivotally disposed in the second through orifice to form a fluid passage between the tube body and the sleeve tube;a jacket tube having a third through orifice in the vertical direction, and having a first sub jacket tube vertically and sequentially connected with a second sub jacket tube, and a third sub jacket tube in the third through hole, such that the sleeve component and the tube body are respectively mounted in the first sub jacket tube, the second sub jacket tube and the third sub jacket tube, wherein a first liquid-tight coupling is formed between the sleeve component and the third sub jacket tube, and the second sub jacket tube and the third sub jacket tube have a first opening and a second opening respectively, and wherein the second opening is connected to the fluid passage; anda lid mounted to an end of the third sub jacket tube of the jacket tube, and having a forth through orifice in the vertical direction, such that the tube body is pivotally disposed in the jacket ...

Passive intermittent rotating assembly and electrospinning equipment

A passive intermittent rotating assembly can automatically adjust a part of a cleaning material when the cleaning material cleans a spinning jet each time and that can stably operate in a high-voltage environment. The passive intermittent rotating assembly includes a plurality of first abutment members and second abutment members being arranged respectively at an inner side and outer side of the main wheel along the circumferential direction, and being separated from each other to form gaps for a push portion of a push member to pass through. Each of the first abutment members includes a first inner-side abutment portion and a first outer-side abutment portion provided for abutting against the push portion. Each of the second abutment members includes a second inner-side abutment portion and a second outer-side abutment portion provided for abutting against the push portion.

APPARATUS FOR PRODUCTION OF POLYMERIC NANOFIBERS

The present invention is directed toward an apparatus comprising a high speed rotating disk or bowl for nanofiber spinning from the rotational sheared thin film fibrillation at the enclosed serrations with the optimized stretching zone to produce the defects-free nanofibrous web and nanofibrous membrane comprising a nanofiber network with a number average nanofiber diameter less than 500 nm that yield the crystallinity higher than the polymer resin used in making the web. 1. A spinning apparatus for making polymeric nanofibers , comprising:(a) a high speed rotating member comprising a spinning disk or a spinning bowl wherein the rotating member has an edge and, optionally, the rotating member can be heated by induction heating;(b) a protecting shield affixed to the edge of the rotating member to form enclosed serrations wherein the protecting shield is positioned on the top of the spinning disk or the bottom of the spinning bowl;(c) a stationary shield on the bottom of the rotating member; and(d) an optional stretching zone.2. Polymeric nanofibers produced from the spinning apparatus of claim 1 , wherein the polymeric nanofibers comprise at least about 99% by number of nanofibers with a number average diameter less than about 500 nm.3. A nanofibrous web produced from the polymeric nanofibers of claim 2 , wherein the nanofibrous web has:(a) less than about 5% Mw reduction of the nanofibrous web as compared to the polymer used for making the nanofibrous web;(b) essentially the same thermal weight loss as compared to the polymer used for making the nanofibrous web as measured by TGA;(c) higher crystallinity of the nanofibrous web as compared to the polymer used for making the nanofibrous web; and(d) average web strength of at least about 2.5 N/cm. This invention relates to an improved centrifugal nanofiber spinning apparatus for producing the defects-free nanofibrous web and nanofibrous membrane comprising a nanofiber network with a number average nanofiber diameter ...

METHOD AND APPARATUS FOR MAKING A FIBER FLEECE

A system for making a nonwoven nonwoven spun-bond or melt-blown fabric has a spinneret for spinning fibers or filaments, a cooler downstream of the spinneret for cooling the spun fibers or filaments, a stretcher downstream of the cooler for stretching the cooled fibers or filaments, and a conveyor downstream of the stretcher. The stretched and cooled fibers or filaments are deposited as a nonwoven web on the conveyor. Sensors measure input parameters at the spinneret, at the cooler, at the stretcher, and/or at at least one diffuser or at the conveyor. An evaluating unit for determining an output parameter from the measured input parameter with respect to a predetermined reference parameter. 1. A method of making a nonwoven fabric from fibers in a nonwoven spun-bond or melt-blown fabric-making system , the method comprising the steps of:spinning fibers or filaments being spun with a spinneret;cooling the spun fibers or filaments downstream from the spinneret with a cooler;stretching the cooled fibers or filaments downstream of the cooler with a stretcher;depositing the stretched and cooled fibers or filaments as a nonwoven web on a conveyor;determining reference parameters for the spinneret, cooler, stretcher, and/or conveyor representing normal trouble-free operation of the system; andgenerating input parameters with sensors at the spinneret, cooler, stretcher, and/or conveyor during operation of the system; andevaluating the input parameters and generating an output parameter representing the evaluation.2. The method defined in claim 1 , wherein the evaluation is a comparison of each output parameter with the respective reference parameter.3. The method defined in claim 1 , further comprising the step of:in the event of a deviation of at least one output parameter from the respective reference parameter, generating an alarm signal and recording the alarm signal in an independent memory.4. The method defined in claim 1 , wherein the reference parameters are ...

PROCESS AND DEVICE FOR THE MELT SPINNING AND COOLING OF MULTIFILAMENT THREADS

Techniques for melt spinning and cooling of multifilament polyamide threads are described. The process involves multiple filament bundles spun alongside one another and cooled down separately by streams of cooling air flowing radially from the outside to the inside. Streams of cooling air are produced from a blowing chamber connected to a pressure source. Exhaust gases that occur during the spinning are removed through exhaust openings before the cooling of the filament bundles. An air pressure is set within the blowing chamber in such a way that the exhaust gases in the vicinity of the filament bundles are blown out through the exhaust openings from the inside outwards. A blowing box is assigned a pressure setting means for setting an air pressure within the blowing chamber, by which an air pressure for blowing out the exhaust gases can be set at the exhaust openings of a connection adapter. 1. Method for melt spinning and cooling of multifilament threads of a polyamide , in which multiple filament bundles are spun and separately cooled by radial cooling air streams flowing from outside to inside , in which the cooling air streams are generated out of a blow chamber connected to a pressure source , and in which a plurality of waste gases emerging during the spinning are evacuated through waste gas openings prior to the cooling of the filament bundles , wherein within the blow chamber such an air pressure is set that the waste gases in the area surrounding the filament bundles are blown out through the waste gas openings from inside to outside.2. Method as claimed in claim 1 , wherein before the start of the process the air pressure of the cooling air within the blow chamber is measured and set to a set value for the blowing out of the waste gases and for the cooling of the filaments.3. Method as claimed in claim 2 , wherein the overpressure of the cooling air within the blow chamber is set by an adjustable damper flap within an inflow.4. Method as claimed in claim ...

INHERENTLY SUPER-OMNIPHOBIC FILAMENTS, FIBERS, AND FABRICS AND SYSTEM FOR MANUFACTURE

Invention is directed to a method of extruding an omni-phobic filament comprising: extruding a co-polymer filament having a first polymer at a core having generally a circular cross-section, and a second polymer disposed at a perimeter of the core wherein the second polymer is dissolvable; creating channels disposed at the perimeter of the core by dissolving the second polymer; creating trapezoidal cross-section features having a distal angle less than 70°, a top edge greater than a side length and a bottom length less than the side length; and adding nano-sized particles to at least one of the top edge and one or more sides or any combination thereof. 1. A method of extruding an omni-phobic filament comprising:providing feedstock taken from the group consisting of a first polymer and a second polymer wherein the second polymer is dissolvable;forcing the feedstock through a spinneret, spin pack, quench, heater, drawing apparatus, and stabilizing process;dissolving the second polymer to create reentrant features disposed at the perimeter of the filament and along the lengths of the filament having a trapezoidal cross-section; and,adding nano-sized particles to at least one of the top edge and the side length.2. The method of wherein the reentrant features include a distal angle less than 70° claim 1 , a top edge greater than a side length and a bottom length less than the side length.3. The method of wherein the number of reentrant features is in the range of 6 to 64.4. The method of wherein the first polymer is taken from the group consisting of polypropylene and nylon and the second polymer is a G polymer.5. The method of wherein the nano-sized particles have a diameter of about 200 nm.6. The method of including the step of providing a fiber having a plurality of filaments and providing a fabric having an plurality of fibers.7. The method of wherein the reentrant features have a geometric angle less than the equilibrium contact angle of a liquid contacting the ...

FABRIC

The present invention aims to provide a fabric that can improve the gripping performance of gripping of a contacted object via a glove when the fabric is made into the glove, and that can facilitate wearing and taking off the glove. 1. A fabric comprising a filament yarn A having a single fiber diameter of 100 to 300 nm and a filament yarn B having a single fiber diameter of 10 μm or more , wherein a value obtained by dividing an exposed area of the filament yarn A on a first surface of the fabric by an exposed area , on the first surface , of all fibers exposed on the first surface is 0.50 or more and 0.90 or less.2. The fabric according to claim 1 , wherein a value obtained by dividing an exposed area of the filament yarn A on a second surface of the fabric by an exposed area claim 1 , on the second surface claim 1 , of all fibers exposed on the second surface is 0.10 or more and 0.40 or less.3. The fabric according to claim 2 , wherein a value obtained by dividing a static friction coefficient of the first surface in a wet state by a static friction coefficient of the second surface in a wet state is 1.2 or more and 2.5 or less claim 2 , and the static friction coefficient of the first surface in the wet state is 0.7 or more.4. The fabric according to claim 1 , wherein a tensile stress at 30% elongation in a wet state is 100 N/50 mm or less.5. (canceled)6. A glove comprising the fabric according to claim 1 , wherein the fabric has a thickness of 0.2 to 0.9 mm.7. The glove according to used for surgery. This is the U.S. National Phase application of PCT/JP2016/065564, filed May 26, 2016, which claims priority to Japanese Patent Application No. 2015-107214, filed May 27, 2015, the disclosures of these applications being incorporated herein by reference in their entireties for all purposes.The present invention relates to a fabric, and particularly to a fabric suitable for gloves.In recent years, fabrics using nanofibers having a single fiber diameter of less than 1 ...

NONWOVEN FABRIC MANUFACTURING APPARATUS AND NONWOVEN FABRIC MANUFACTURING METHOD

Provided is a nonwoven fabric manufacturing apparatus and a nonwoven fabric manufacturing method capable of equally coping with minute dimensional differences while reducing cost in response to various dimensional requirements. The nonwoven fabric manufacturing apparatus includes a die having a nozzle row , a resin supply means supplying the thermoplastic resin to the die , a hot air supply means supplying hot air to a thermoplastic resin extruded from the nozzle row of the die to draw the thermoplastic resin into fibers, and a collector having a conveyor belt , the collector collecting the thermoplastic resin that has been drawn into fibers to form a nonwoven fabric web by the self-fusion property. 1: A nonwoven fabric manufacturing apparatus comprising:a die having a nozzle row, the nozzle row extruding a thermoplastic resin;a resin supply means supplying the thermoplastic resin to the die;a hot air supply means supplying hot air to the thermoplastic resin extruded from the nozzle row of the die to draw the thermoplastic resin into fibers; anda collector having a conveyor belt, the collector collecting the thermoplastic resin that has been drawn into fibers to form a web by the self-fusion property;wherein the die is disposed in such a manner that the angle of the die can be changed in a direction inclined relative to a width direction of the web that is perpendicular to a moving direction of the conveyor belt so that a width dimension of the web to be formed can be adjusted to a dimension corresponding to the angle of the die.2: The nonwoven fabric manufacturing apparatus according to claim 1 , wherein a resin inflow port of the die is turnably attached to a resin supply port of the resin supply means so that the angle of the die can be changed by adjusting a turning angle of the attachment.3: The nonwoven fabric manufacturing apparatus according to claim 2 , wherein an attachment structure between the resin inflow port of the die and the resin supply port of the ...

NANOFIBER MANUFACTURING-APPARATUS NOZZLE HEAD AND NANOFIBER MANUFACTURING APPARATUS WITH THE SAME

According to one embodiment, a nanofiber manufacturing-apparatus nozzle head includes a plurality of holes. A solution is ejected from the holes. The holes are arranged from a center of the nozzle head toward an end portion of the nozzle head. An interval of adjacent holes decreases away from the center. 1. A nanofiber manufacturing-apparatus nozzle head , comprising a plurality of holes , a solution being ejected from the holes , the holes being arranged from a center of the nozzle head toward an end portion of the nozzle head ,wherein an interval of adjacent holes decreases away from the center.2. The nozzle head according to claim 1 , whereinthe holes are arranged toward a plurality of directions with respect to the center, andthe holes are provided so as to have the same number of the holes in outward directions with respect to the center.3. The nozzle head according to claim 1 , wherein the holes are arranged symmetrically with respect to the center.4. The nozzle head according to claim 1 , wherein the reciprocal of the interval of the holes is expressed by a quadratic function of the order in which the intervals of the holes are arranged from the center.5. The nozzle head according to claim 1 , wherein the holes are arranged on at least one straight line passing through the center.6. The nozzle head according to claim 1 , whereinthe number of the holes is an odd number, andone of the holes is disposed on the center.7. The nozzle head according to claim 1 , whereinthe number of the holes is an even number, andthe center is positioned between adjacent holes.8. The nozzle head according to claim 1 , wherein the holes are arranged from the center toward the end portion on a rectangular plane of the nozzle head and arranged on a straight line passing through the center.9. A nanofiber manufacturing apparatus claim 1 , comprising:an ejector including a nozzle head and ejecting a solution from a plurality of holes toward a collecting member, the holes being provided ...

SYSTEM AND PROCESS FOR MAKING A POLYMERIC FIBEROUS MATERIAL HAVING INCREASED BETA CONTENT

A system and process for making a polymeric fibrous material having increased beta content is provided herein. The system is configured for meltblowing polymer into a fibrous material having high beta crystalline content and has an extruder for melting and moving a polymer to a meltblowing die. The meltblowing die has a longitudinally extending die tip with a plurality of spinnerets substantially equidistantly spaced from each other and a longitudinal fluid material flow through passage disposed along each longitudinal side of the die tip configured to axially attenuate the melted polymer from the die tip in fibrous form. A plurality of liquid spray nozzles are configured and disposed to spray a liquid into the fibrous melted polymer attenuated from the die tip. 1. A system configured for meltblowing polymer into a fibrous material having high beta crystalline content , the system comprising:an extruder configured and disposed to melt a solid polymer and move the melted polymer to a meltblowing die; a longitudinally extending die tip having a plurality of spinnerets substantially equidistantly spaced from each other configured to axially attenuate the melted polymer therefrom;', 'a longitudinal fluid material flow through passage disposed along each longitudinal side of the die tip configured to axially attenuate the melted polymer from the die tip in fibrous form;', 'an insulating material disposed along an outer longitudinal side of each longitudinal fluid material flow through passage;, 'at least one meltblowing die configured and disposed to receive the melted polymer from the extruder and comprisingthe system further comprising a plurality of liquid spray nozzles configured and disposed to spray a liquid into the fibrous melted polymer attenuated from each die tip, each liquid spray nozzle having an outlet configured and disposed to spray a substantial amount of liquid at an angle between about 20° and about 85° toward the attenuation axis of the die tip; anda ...

SYSTEMS AND METHODS FOR MANUFACTURING BULKED CONTINUOUS FILAMENT FROM COLORED RECYLED PET

A method of manufacturing bulked continuous carpet filament which, in various embodiments, comprises: (A) grinding recycled PET bottles into a group of flakes; (B) washing the flakes; (C) identifying and removing impurities, including impure flakes, from the group of flakes; (D) adding one or more color concentrates to the flakes; (E) passing the group of flakes through an MRS extruder while maintaining the pressure within the MRS portion of the MRS extruder below about 25 millibars; (F) passing the resulting polymer melt through at least one filter having a micron rating of less than about 50 microns; and (G) forming the recycled polymer into bulked continuous carpet filament that consists essentially of recycled PET. 1. A method of manufacturing bulked continuous carpet filament , the method comprising: (i) a first satellite screw extruder, the first satellite screw extruder comprising a first satellite screw that is mounted to rotate about a central axis of the first satellite screw;', '(ii) a second satellite screw extruder, the second satellite screw extruder comprising a second satellite screw that is mounted to rotate about a central axis of the second satellite screw; and', '(iii) a pressure regulation system that is adapted to maintain a pressure within the first and second satellite screw extruders between about 0 millibars and about 5 millibars;, '(A) providing a multi-screw extruder that comprises(B) using the pressure regulation system to reduce a pressure within the first and second satellite screw extruders to between about 0 millibars and about 5 millibars;(C) providing a plurality of polymer flakes, the plurality of polymer flakes comprising between about six percent and about ten percent colored recycled polyethylene terephthalate (PET) flakes and balance substantially clear recycled PET flakes;(D) providing one or more color concentrates;(E) adding the one or more color concentrates to the plurality of polymer flakes such that the resulting ...

Material deposition device and method of use

A material deposition device includes a solution supply component, a gas supply component, and a co-axial discharge mechanism. The co-axial discharge mechanism includes a solution discharge mechanism, and a gas discharge mechanism co-axial with the solution discharge mechanism. The material deposition device further includes an alignment component that aligns the solution discharge mechanism in a center of the gas discharge mechanism; and an orifice plate with a number of turbulence inducing structures that induce turbulence in gas exiting the gas discharge mechanism.

MELTBLOWN DIE TIP ASSEMBLY AND METHOD

This disclosure describes meltblown methods, assemblies, and systems for polymer production. In one such implementation, a meltblown system provides improved uniform output and reduction of fiber size given certain polymer material and production rate. In certain meltblown implementations, the equipment may be ready and quickly swapped while provided in hot standby mode such that the maintenance down time is minimized. The disclosed meltblown equipment may include a polymer beam and air chamber and a die tip assembly. The die tip assembly, in certain embodiments, may quickly be attached onto or removed from the polymer beam and air chamber. In preferred embodiments, the meltblown system includes a single input (e.g., a specific type of polymer material). The meltblown system includes some tapered structures that facilitate polymer flow. The assembly mechanisms used in the meltblown system enables cleaning of the polymer distribution components with each use. 1. A meltblown die tip assembly comprising:a mounting structure having at least one polymer flow passageway formed therein and configured to receive a polymer flow, a first air passageway formed therein and configured to receive a first airflow, and a second air passageway formed therein and configured to receive a second airflow;an elongated die tip having a polymer flow chamber with a first opening and a second opening, a polymer flow tip, a first airflow regulation channel having a first impingement surface, a second airflow regulation channel having a second impingement surface, a first angled side, and a second angled side,wherein the polymer flow chamber of the elongated die tip is in fluid communication with the at least one polymer flow passageway of the mounting structure at the first opening of the polymer flow chamber of the elongated die tip, and the polymer flow chamber configured to receive at least a portion of the polymer flow from the at least one polymer flow passageway of the mounting ...

Novel Extrusion Process for Manufacturing of Absorbable Suture Fibers

A novel process is disclosed for extruding an absorbable glycolide/lactide block copolymer into multifilament suture fibers. The block copolymer preferably consists of about 50/50 mole % of Glycolide/Lactide in the center segment and the overall composition of the copolymer is about 90/10 mole % Glycolide/Lactide. The novel extrusion process comprises the steps of maintaining the temperatures of at least two, preferably three or more, of the extrusion zones in the range of about 5-50° C. below the polymer melting point. The multifilament suture made with the invention process from the segmented, glycolide-rich, poly(glycolide-co-lactide) copolymers of A-B-A type, where the B-segment is an amorphous prepolymer of glycolide and lactide in the molar ratio of about 50/50 glycolide/lactide, exhibit exceptionally high breaking strength retention (BSR) at 42 days post-implantation. 1. A process for manufacturing a multifilament yarn with an extruder having at least a feeding zone , a transition zone and a metering zone , a pump and block section and a spinneret from an absorbable copolymer having a melting point into multifilament fibers comprising the steps of:a. Setting and maintaining at least two of the three extrusion zones selected from the group consisting of the feeding zone, the transition zone and the metering zone, at an operational temperature from about 50° C. below to about 2° C. below the melting point of the copolymer,b. Setting and maintaining the pump and block section at a pump temperature from about 15° C. below to no more than 25° C. above the melting point of the copolymer;c. Setting and maintaining the spinneret at a spin temperature from about 10° C. below to no more than 30° C. above the melting point of the copolymer.2. The process of claim 1 , wherein at least two (2) of three extrusion zones are maintained at temperatures at least 5° C. below the copolymer melting point.3. The process of claim 1 , wherein the copolymer is an absorbable ...

ELECTROSPINNING APPARATUS AND METHOD FOR PRODUCING MULTI-DIMENSIONAL STRUCTURES AND CORE-SHEATH YARNS

Electrospinning apparatus and method for producing multi-dimensional structures such as one-dimensional continuous yarns, two-dimensional mats and three-dimensional cotton-like fluffy scaffolds is disclosed. Further, electrospinning apparatus and method with single collector geometry for producing multi-dimensional structures and core-sheath yarns are disclosed. 1. An electrospinning apparatus , comprising:a source at a first potential; anda rotatable collector at a second potential;wherein the source is configured to draw a fiber, and alter its orientation with respect to the axis of rotation of the collector, the collector comprising a plurality of electrodes connected at one end and mounted with tines at the other end to form an open structure; andwherein a potential difference between the first and the second potentials causes the fiber to be deposited to the collector.2. The apparatus of claim 1 , wherein the source comprises an injector loaded with solution formulation or melt claim 1 , and the fiber is drawn through a spinneret.3. The apparatus of claim 1 , wherein the collector comprises electrodes arranged to form an umbrella-like claim 1 , hemispherical claim 1 , semi-cuboidal claim 1 , semi-cubical claim 1 , ellipsoidal claim 1 , cone-like claim 1 , polygonal or irregular shaped structure.4. The apparatus of claim 1 , wherein the electrodes are flexible and the arrangement of electrodes is adjustable to configure the collector to various shapes and sizes.5. The apparatus of claim 1 , wherein the source is configured to align parallel to the axis of the collector with collector diameter in the range 1-10 cm for fabricating two-dimensional scaffolds.6. The apparatus of claim 1 , wherein the source is configured to align parallel to the axis of the collector with collector diameter in the range 10-20 cm for fabricating three-dimensional scaffolds.7. The apparatus of claim 1 , further comprising a rotatable spindle with a guide wire adjacent to the collector ...

Spinneret, Device Having A Spinneret, Method For Producing A Hollow Fiber Or Hollow Fiber Membrane By Means Of A Spinneret And Filter

The invention relates to a spinning nozzle () for the extrusion of a hollow fiber from one or more spinning masses and an apparatus comprising a spinning nozzle () as well as method for extruding a hollow fiber by means of a spinning nozzle (), wherein the spinning nozzle () has an inlet port () for each spinning mass to be extruded for introducing the spinning mass into the spinning nozzle (), an outlet port for the exit of spinning mass along an outlet axis (A), and at least one spinning mass flow channel for guiding at least one spinning mass to be extruded from the inlet port () to the outlet port, wherein at least one spinning mass flow channel comprises a flow manipulation section having an inlet and an outlet, which comprises a flow-guiding structure () for influencing a spinning mass flowing through the spinning mass flow channel, wherein the flow-guiding structure () is thereby designed to influence spinning mass flow such that the spinning mass flowing through the spinning mass flow channel at least partially flows through said spinning mass flow channel along at least two different flow paths, wherein the flow paths running through the spinning mass flow channel exhibit a substantially identical path length between the inlet of the flow manipulation section and the outlet port of the spinning mass flow channel. 1. A spinning nozzle for the extrusion of a hollow fiber membrane from one or more spinning masses , wherein the spinning nozzle has an inlet port for each spinning mass to be extruded for introducing the spinning mass into the spinning nozzle , at least one outlet port for the exit of one or more spinning masses out of the spinning nozzle along an outlet axis , and at least one spinning mass flow channel for guiding at least one spinning mass to be extruded from the respective inlet port to the respective outlet port , wherein at least one spinning mass flow channel comprises a flow manipulation section having an inlet and an outlet , wherein the ...

POLYMERIC NANOFIBERS AND NANOFIBROUS WEB

The present invention is directed toward an apparatus comprising a high speed rotating disk or bowl for nanofiber spinning from the rotational sheared thin film fibrillation at the enclosed serrations with the optimized stretching zone to produce the defects-free nanofibrous web and nanofibrous membrane comprising a nanofiber network with a number average nanofiber diameter less than 500 nm that yield the crystallinity higher than the polymer resin used in making the web. 1. (canceled)3. A nanofibrous web produced from the polymeric nanofibers of claim 2 , wherein the nanofibrous web has:(a) less than about 5% Mw reduction of the nanofibrous web as compared to the polymer used for making the nanofibrous web;(b) essentially the same thermal weight loss as compared to the polymer used for making the nanofibrous web as measured by TGA;(c) higher crystallinity of the nanofibrous web as compared to the polymer used for making the nanofibrous web; and(d) average web strength of at least about 2.5 N/cm. This invention relates to an improved centrifugal nanofiber spinning apparatus for producing the defects-free nanofibrous web and nanofibrous membrane comprising a nanofiber network with a number average nanofiber diameter less than 1000 nm.Polymer nanofibers can be produced from solution-based electrospinning or electroblowing, however, they have very high processing cost, limited throughputs and low productivity. Melt blowing nanofiber processes that randomly lay down fibers do not provide adequate uniformity at sufficiently high throughputs for most end use applications. The resulting nanofibers are often laid on substrate layer of coarse fiber nonwoven or microfiber nonwoven to construct multiple layers. A problem with melt-blown nanofibers or small microfibers, exposed on the top of the web, they are very fragile and easily crushed by normal handling or contact with some object. Also, the multilayer nature of such webs increases their thickness and weight, and also ...

Spinneret for manufacture of melt blown nonwoven fabric

A bimodal spinneret system including the bimodal spinneret and method for making a surgical buttress having improved characteristics are disclosed. The bimodal spinneret includes at least a distribution of hole diameters to create fibers with a more heterogeneous shear history and die swell. The system and method of using the bimodal spinneret creates a melt blown non-woven fiber mat that is cut into a surgical buttress having unique fabric properties such as differentiated load deflection behavior, flexural stiffness, polymer fiber alignment, fiber crystallinity and subsequent strength retention during in vitro degradation not attainable with unimodal spinneret hole diameters.

SPINNING PROCESS OF WATERLESS COLORED HEATHER YARNS

A method of forming a colored heather yarn, comprising the sequential steps: (a) processing a natural fiber; (b) obtaining a regenerated cellulose man-made fiber that comprises an uncolored regenerated cellulose man-made fiber, a waterless dope-dyed regenerated cellulose man-made fiber, or both; (c) producing a man-made fiber that comprises an uncolored man-made fiber, a waterless dope-dyed man-made fiber, or both; (d) blending the natural fiber from step (a) with the individual fibers from step (b), step (c), or both to produce a blended composite of fibers; and (e) roving, spinning and winding the blended composite of fibers of step (d) into a final colored heather yarn; wherein the colored heather yarn comprises a predetermined fiber content ratio. There is also provided a colored heather yarn made according to the foregoing method. 2. The method according to claim 1 , wherein the predetermined fiber content ratio of the regenerated cellulose man-made fiber is between 80% to 3% claim 1 , and the predetermined fiber content ratio of the man-made fiber is between 80% to 3%.3. The method according to claim 1 , wherein the step (a) of processing said natural fiber comprises a process selected from a combed process or a carded process.4. The method according to claim 1 , wherein said waterless dope-dyed man-made fiber of step (c) comprises a waterless dope-dyed polyester fiber.5. The method according to claim 4 , wherein the step of producing the waterless dope-dyed polyester fiber comprises producing the waterless dope-dyed polyester fiber using waterless colored polyester chips.6. The method according to claim 5 , wherein the step of producing the waterless dope-dyed polyester fiber comprises:heating said waterless colored polyester chips to a molten state; andspinning the molten polyester chips to form said waterless dope-dyed polyester fiber.7. The method according to claim 5 , wherein said waterless colored polyester chips are from one or more liquid-containing ...

NANOFIBER MANUFACTURING DEVICE AND HEAD USED FOR SAME

An object of the present invention is to provide an apparatus for producing nanofibers and a nozzle head use for the same which can be manufactured by drilling and is capable of efficiently carrying molten resin on a gas flow. 1. An apparatus for producing nanofibers comprisinga raw material discharge surface on which a raw material flow passage for discharging a liquid raw material is arranged, anda gas discharge surface which is arranged with an angle α (0<α≤90°) toward said raw material discharge surface and on which a gas flow passage for ejecting gas is arranged, wherein said raw material flow passage is orthogonal to said raw material discharge surface, said gas flow passage is orthogonal to said gas discharge surface, and said raw material flow passage and said gas flow passage are arranged so that said liquid raw material discharged from said raw material flow passage meets gas ejected from said gas flow passage.2. An apparatus for producing nanofibers claimed in comprising one or more flow passage sat of said one raw material flow passage and said one gas flow passage.3. An apparatus for producing nanofibers claimed in wherein a plurality of flow passage sets are provided and these flow passage sets are arranged in one direction so that said raw material flow passage and said gas flow passage are arranged on two linear lines parallel each other.4. An apparatus for producing nanofibers claimed in wherein a plurality of flow passage sets are provided and the plurality of flow passage sets are arranged annularly so that said raw material flow passage and said gas flow passage are arranged on the circumference of two circles which become concentric.5. An apparatus for producing nanofibers claimed in wherein an axis line of said raw material flow passage and an axis line of said gas flow passage are provided on a plane.6. An apparatus for producing nanofibers claimed in comprising one or more flow passage sets of a plurality of said raw material flow passage and ...

THE POROUS ULTRA-SOFT ULTRA-FINE DENIER POLYESTER FIBER AND ITS PREPARATION METHOD

A porous ultra-soft ultra-fine denier polyester fiber and preparation method. The modified polyester is spun with a porous spinneret to produce the porous ultra-soft ultra-fine denier polyester fiber, and the spinneret holes on the porous spinneret are arranged in an elliptical arrangement. The porous ultra-soft ultra-fine denier polyester fiber is obtained by metering, extruding, cooling, oiling and high-speed winding the modified polyester chips. The preparation method of modified polyester is as follows: terephthalic acid reacts with ethylene glycol to produce ethylene terephthalate. The modified polyester is obtained by the reaction of terephthalic acid with branched diol. The fiber of the invention has good properties and the deviation rate of fiber density. The deviation rate of fiber density is ≤0.5%, the CV value of breaking strength is ≤4.0%, the CV value of elongation at break is ≤8.0%, the CV value of yarn unevenness is ≤2.0%. 1. A porous ultra-soft ultra-fine denier polyester fiber , comprising a modified polyester , and the modified polyester is composed of a terephthalic acid chain , an ethylene glycol chain and a. diol chain containing a branched chain;a size of the porous ultra-soft ultra-fine denier polyester fiber is 0.20-0.50 dtex; an initial modulus is ≤65 cN/dtex; a breaking strength is ≥3.8 cN/dtex; an elongation at break is 35.0±3.0%;at a temperature of 80° C.-130° C., a space gap between molecular chains in the modified polyester increases by 10-30v/v %;at a temperature of 260-290° C., a melt viscosity decreases by 10-20%;a deviation rate of fiber density of the porous ultra-soft ultra-fine denier polyester fiber is ≤0.5%;a CV value of breaking strength is ≤4.0%. and a CV value of elongation at break is ≤8.0%, and a CV value of coiling shrinkage coefficient of variation is ≤8.0%, and a CV value of yarn unevenness is ≤2.0%;wherein, the increase of the space gap between the molecular chains refers to a comparison of the spatial gaps between ...

Process for spinning multifilament yarn

A spinneret is used to reduce filament breakage during spinning of multifilament yarn being stretched at a high stretch ratio. The spinneret has a first group of spinning holes with capillaries and a second group of spinning holes with capillaries. The capillaries of the second group of spinning holes have a lower length to diameter (L/D) ratio than the capillaries of the first group of spinning holes. All of the capillaries have the same diameter, which is 100 μm or less.

NOZZLE PLATE FOR FIBER FORMATION

Disclosed herein are customizable kits of parts for the fabrication of polymer fibers. In some embodiments, the kits provided herein comprise a scaffold comprising first and second opposite surfaces and one or more pores extending through the first and second surfaces, wherein each pore comprises a first channel and a first conjunction interface. The kits additionally comprise a plurality of nozzles, wherein each nozzle comprises a second channel and a second conjunction interface, and wherein the second interface can be removably and stably coupled to the first conjunction interface of each pore while allowing a fluid through the first channel and the second channel. The kits further comprise a plurality of closure structures, wherein each closure structure comprises a third conjunction interface, and wherein the third interface can be removably and stably coupled to the first conjunction interface of each pore to seal the pore. In some embodiments, at least the second channel of each nozzle has an internal diameter configured to allow formation of a fiber. 1. A system comprising:a scaffold comprising first and second opposite surfaces and one or more pores extending through the first and second surfaces, wherein each pore comprises a first channel and a first conjunction interface;a plurality of nozzles, wherein each nozzle comprises a second channel and a second conjunction interface, wherein the second interface can be removably and stably coupled to the first conjunction interface of each pore, while allowing a fluid through the first channel and the second channel; anda plurality of closure structures, wherein each closure structure comprises a third conjunction interface, wherein the third interface can be removably and stably coupled to the first conjunction interface of the remaining pore, thereby sealing the remaining pore;wherein at least the second channel has an internal diameter configured to allow formation of a fiber.2. The system of claim 1 , ...

FIBER MANUFACTURING APPARATUS AND FIBER MANUFACTURING METHOD

In one embodiment, a fiber manufacturing apparatus has a discharge head which discharges a raw material liquid in which a polymer is dissolved in a solvent toward a collector, and a power source which generates a potential difference between the discharge head and the collector. The fiber manufacturing apparatus further has a recovery device, a cleaning device, and a moving device. The recovery device recovers the raw material liquid to be discharged by the discharge head. The cleaning device cleans the discharge head. The moving device moves the discharge head to any position out of a spinning position where the discharge head and the collector are opposite to each other, a recovery position where the discharge head and the recovery device are opposite to each other, and a cleaning position where the discharge head and the cleaning device are opposite to each other. 1. A fiber manufacturing apparatus , comprising:a discharge head capable of discharging a raw material liquid in which a polymer is dissolved in a solvent toward a collector;a power source capable of generating a potential difference between the discharge head and the collector;a recovery device capable of recovering the raw material liquid to be discharged by the discharge head;a cleaning device capable of cleaning the discharge head; anda moving device capable of moving the discharge head to any position out of a spinning position where the discharge head and the collector are opposite to each other, a recovery position where the discharge head and the recovery device are opposite to each other, and a cleaning position where the discharge head and the cleaning device are opposite to each other.2. The fiber manufacturing apparatus according to claim 1 , wherein:the moving device is capable of moving the discharge head to the recovery position before or after the discharge head is located at the spinning position.3. The fiber manufacturing apparatus according to claim 1 , wherein:the moving device is ...

ELECTROSPINNING APPARATUS

An electrospinning apparatus according to an embodiment is configured to deposit a fiber on a collector or a member. The electrospinning apparatus includes a first nozzle head provided on one side of the collector or the member, and a second nozzle head provided on the side opposite to the first nozzle head with the collector or the member interposed. The first nozzle head and the second nozzle head are at a section where the collector or the member moves in a direction tilted with respect to a horizontal direction. 1. An electrospinning apparatus configured to deposit a fiber on a collector or a member , the electrospinning apparatus comprising:a first nozzle head provided on one side of the collector or the member; anda second nozzle head provided on a side opposite to the first nozzle head with the collector or the member interposed,the first nozzle head and the second nozzle head being at a section where the collector or the member moves in a direction tilted with respect to a horizontal direction.2. The electrospinning apparatus according to claim 1 , further comprising: a controller is configured to control depositing of the fiber by the first nozzle head and depositing of the fiber by the second nozzle head claim 1 ,the controller causes the fiber to be deposited by the second nozzle head when causing the fiber to be deposited by the first nozzle head.3. The electrospinning apparatus according to claim 1 , wherein the second nozzle head opposes the first nozzle head with the collector or the member interposed.4. The electrospinning apparatus according to claim 1 , wherein the second nozzle head is provided at a position separated from the first nozzle head in a movement direction of the collector or the member.5. The electrospinning apparatus according to claim 1 , wherein a plurality of the first nozzle heads is provided to be arranged in a movement direction of the collector or the member.6. The electrospinning apparatus according to claim 5 , wherein one ...

SPINNING NOZZLE APPARATUS FOR MANUFACTURING HIGH-STRENGTH FIBER

The present invention relates to a spinning nozzle apparatus for manufacturing a high-strength fiber. 1. A spinning nozzle apparatus for manufacturing a high-strength fiber , comprising:{'b': '21', 'a pack body ;'}{'b': '22', 'a pack body heater installed on the outside of the pack body to provide a heat source for the pack body;'}{'b': 23', '21, 'a spinning nozzle installed in the pack body to spin a melted thermoplastic resin; and'}{'b': 24', '25', '21', '23, 'a retainer and a lower plate installed in the pack body to feed the melted thermoplastic resin into the spinning nozzle ,'}{'b': 23', '23', '21', '23', '21, 'i': b', 'c, 'the spinning nozzle comprising a fixation member disposed on the inside of the pack body and a spinning member disposed on the outside of the pack body ,'}{'b': 23', '23, 'i': c', 'a, 'wherein the spinning member disposed on the outside of the pack body has a plurality of spinning nozzle holes for melt-spinning the thermoplastic resin to form a fiber,'}the spinning nozzle apparatus further comprising:{'b': 26', '23', '23', '21, 'i': a', 'c, 'a heating body for heating the portion of the spinning nozzle holes of the spinning member to a temperature above the temperature of the pack body .'}223232323dcb.. The spinning nozzle apparatus for manufacturing a high-strength fiber as claimed in claim 1 , wherein the spinning nozzle has an extension member for maintaining the spinning member apart from the fixation member323212323dac.. The spinning nozzle apparatus for manufacturing a high-strength fiber as claimed in claim 2 , wherein the extension member extends to a length of 10 to 500 mm from the bottom of the pack body to position the spinning nozzle holes of the spinning member42623c.. The spinning nozzle apparatus for manufacturing a high-strength fiber as claimed in claim 1 , wherein the heating body is installed in a ring form to surround the side wall of the spinning member5252323232323dca.. The spinning nozzle apparatus for manufacturing a ...

SYSTEM, METHOD AND DEVICE FOR QUENCHING SYNTHETIC MULTIFILAMENT FIBERS

Described herein is a quenching system comprising a spinneret to spin molten polymer, a quench stack disposed operatively below the spinneret and the flow communication with the spinneret, a first means to provide a first stream of ambient air to provide partially-quenched solidified fibers of the molten polymer spun through the spinneret, at a solidification temperature and a second means to provide a second stream of conditioned air at a below-ambient temperature for further quenching the partially quenched solidified fibers, wherein the second stream of the conditioned air is provided through an adapter placed operatively below a region where the molten polymer solidifies partially. 1. A quenching system comprising:a spinneret to spin molten polymer;a quench stack disposed operatively below the spinneret and in flow communication with the spinneret;first means to provide a first stream of ambient air to provide partially-quenched solidified fibers of a molten polymer spun through the spinneret, at a solidification temperature; andsecond means to provide a second stream of conditioned air at a below-ambient temperature for further quenching the partially quenched solidified fibers, wherein the second stream of the conditioned air is provided through an adapter placed operatively below a region where the molten polymer solidifies partially.2. The quenching system as claimed in claim 1 , wherein the system includes a spin finish applicator located operatively below said adapter claim 1 , said spin finish applicator being disposed on an operating front of a cross-flow quench screen claim 1 , said spin finish applicator being further adapted to be adjusted along the height of said quench stack.3. The quenching system as claimed in claim 2 , wherein the spin finish applicator is adapted to be adjusted along the height of said quench stack claim 2 , in the range of 0.5 meters to 1.2 meters.4. The quenching system as claimed in claim 1 , wherein the system further ...

METHOD FOR PRODUCING ANTIMICROBIAL HEAT-RETAINING FIBER, FIBER PRODUCED BY THE METHOD AND FABRIC USING THE FIBER

Disclosed is a method for producing an antimicrobial heat-retaining fiber. The method includes spinning a spinning solution onto a fiber-forming resin. The spinning solution includes 1.0 to 6.0% by weight of carbon particles and 0.2 to 2.0% by weight of a metal alkoxide coupling agent. The spinning solution further includes 0.5 to 3.0% by weight of inorganic particles composed of a metal powder, a ceramic powder, or a mixture thereof By using the metal alkoxide coupling agent, the carbon particles and the inorganic particles are dispersed in a resin. Also disclosed is a fiber produced by the method. The fiber is prevented from breakage during spinning and is imparted with heat-retaining and antimicrobial functions due to the presence of the carbon particles and the inorganic particles. Further disclosed is a fabric manufactured using the fiber. The fabric can be prevented from deterioration of wash fastness. 1. A method for producing an antimicrobial heat-retaining fiber , comprising spinning a spinning solution onto a fiber-forming resin wherein the spinning solution comprises 1.0 to 6.0% by weight of carbon particles and 0.2 to 2.0% by weight of a metal alkoxide coupling agent.2. The method according to claim 1 , wherein the carbon particles are selected from the group consisting of carbon powder particles claim 1 , graphite powder particles claim 1 , carbon fiber powder particles claim 1 , carbon nanotube particles claim 1 , carbon black particles claim 1 , and mixtures thereof.3. The method according to claim 1 , wherein the metal alkoxide coupling agent is selected from the group consisting of titanates claim 1 , aluminates claim 1 , silcates claim 1 , and mixtures thereof.4. The method according to claim 1 , wherein the spinning solution further comprises 0.5 to 3.0% by weight of inorganic particles composed of a metal powder claim 1 , a ceramic powder claim 1 , or a mixture thereof.5. The method according to claim 4 , wherein the metal powder is selected from ...

SPINNERET FOR ELECTROSTATIC SPINNING

A spinneret () for electrostatic spinning is configured from a structure of an electrically conductive metal material. The structure is provided with a long-axis direction (X), a short-axis direction (Z), and a thickness direction (Y). An inflow port () for a spinning starting material fluid is provided to one surface of the structure. A plurality of protrusions () are formed on another surface of the structure so as to be aligned along the long-axis direction (X). Each of the plurality of protrusion () extends so as to protrude from the structure. The protrusions () have, provided to apexes () thereof, discharge holes () for discharging the starting material fluid. The pitch of the discharge holes () exceeds 1 mm. 1. A spinneret for electrostatic spinning , comprising a structure of an electrically conductive metal material ,wherein the structure is provided with a long-axis direction, a short-axis direction, and a thickness direction,one surface of the structure is provided with an inflow port for a spinning starting material fluid, a plurality of protrusions are formed on another surface of the structure so as to be aligned along the long-axis direction, each of the plurality of protrusions extends so as to protrude from the structure, the protrusions have, provided to apexes thereof, discharge holes for discharging the starting material fluid, and the pitch of the discharge holes exceeds 1 mm.2. The spinneret for electrostatic spinning according to claim 1 , wherein the height of each protrusion is 0.1 mm or more.3. The spinneret for electrostatic spinning according to claim 1 , wherein the structure comprises two or more parts claim 1 , and adjoining planes of the parts are provided with flow passages for uniformly distributing the starting material fluid to each discharge hole.4. The spinneret for electrostatic spinning according to claim 1 , comprising distributing plates for uniformly distributing the starting material fluid to each discharge hole claim 1 , ...

PACK FOR SPINNING AND METHOD FOR PRODUCING FIBER

A pack for spinning is provided with a kneading part disposed on a spinneret. The kneading part includes: an introduction plate including a plurality of first introduction holes for introducing a melted polymer; and a plurality of kneading units including a supply plate including a plurality of independent supply grooves into which the polymer introduced from the introduction holes flows and one or more supply holes disposed in each of the supply grooves, and a converging plate including a plurality of converging grooves in which a plurality of grooves into which the polymer supplied from the supply holes flows are intersected and a plurality of second introduction holes disposed in each of the converging grooves. 1. A pack for spinning being a pack that is used for a production process of a fiber and that is provided with a kneading part disposed on a spinneret , an introduction plate including a plurality of first introduction holes for introducing a melted polymer; and', a supply plate including a plurality of independent supply grooves into which the polymer introduced from the introduction holes flows and one or more supply holes disposed in each of the supply grooves, and', 'a converging plate including a plurality of converging grooves in which a plurality of grooves into which the polymer supplied from the supply holes flows are intersected and a plurality of second introduction holes disposed in each of the converging grooves, wherein, 'a plurality of kneading units including'}], 'the kneading part comprisingwhen the kneading part is divided into virtual regions including an equal area on a face perpendicular to a polymer spinning path direction and separated in parallel with the polymer spinning path direction from an upstream side end to a downstream side end,the first introduction holes penetrating the introduction plate are formed in each of the divided virtual regions;each first end of the supply grooves is disposed just below the corresponding first ...

SYSTEM AND PROCESS FOR MAKING A POLYMERIC FIBEROUS MATERIAL HAVING INCREASED BETA CONTENT

A system and process for making a polymeric fibrous material having increased beta content is provided herein. The system is configured for meltblowing polymer into a fibrous material having high beta crystalline content and has an extruder for melting and moving a polymer to a meltblowing die. The meltblowing die has a longitudinally extending die tip with a plurality of spinnerets substantially equidistantly spaced from each other and a longitudinal fluid material flow through passage disposed along each longitudinal side of the die tip configured to axially attenuate the melted polymer from the die tip in fibrous form. A plurality of liquid spray nozzles are configured and disposed to spray a liquid into the fibrous melted polymer attenuated from the die tip. 1. A system configured for meltblowing polymer into a fibrous material having high beta crystalline content , the system comprising:an extruder configured for extruding and moving melted polymer to a meltblowing die;a receiver configured for receiving the melted polymer from the extruder with a plurality of longitudinally extending die tips, each die tip having a spinneret;an attenuator configured for attenuating melted polymer axially from the plurality of spinnerets;a longitudinal fluid material flow through passages disposed along each longitudinal side of each die tip and configured for flowing hot air therethrough and contacting the melted polymer at the spinneret;a polymer outlet configured for axially attenuating the melted polymer from each spinneret in fibrous form:a sprayer proximate each die tip, each sprayer being configured for spraying a substantial amount of liquid at an angle between about 20° and about 85° toward the attenuation axis of the die tip it is proximate therewith and into the fibrous melted polymer, immediately upon being attenuated from the proximate die tip; anda collector configured for collecting the fibers attenuated from each spinneret.2. The system for meltblowing polymer ...

MELT BLOWING APPARATUS AND METHOD

A melt blowing apparatus and method includes a melt blowing die and at least one louver. The melt blowing die has a nosepiece comprising at least one aperture and at least one air slot adjacent the aperture. The at least one louver is movably positioned adjacent a face of the melt blowing die forming a zone through which can pass air and molten filaments from the air slots and nosepiece of the melt blowing die. 1. A melt blowing apparatus , comprising:a melt blowing die having a nosepiece comprising at least one aperture and at least one air slot adjacent the aperture; andat least one louver movably positioned adjacent a face of the melt blowing die forming a zone through which can pass air and molten filaments from the air slots and nosepiece of the melt blowing die.2. The melt blowing apparatus of claim 1 , wherein the louver has an airfoil shape.3. The melt blowing apparatus of claim 1 , wherein the louver is positioned at an angle to an exposed face of the melt blowing die.4. The melt blowing apparatus of claim 1 , comprising at least two louvers adjacent the nosepiece.5. The melt blowing apparatus of claim 1 , comprising at least three louvers adjacent the nosepiece.6. The melt blowing apparatus of claim 1 , wherein the at least one air slot has a linear configuration.7. The melt blowing apparatus of claim 6 , wherein the at least one air slot is formed between a linear air plate and the nosepiece.8. The melt blowing apparatus of claim 1 , comprising:at least two air slots and at least two air plates adjacent the nosepiece, wherein each air slot is between one of said air plates and the nosepiece, andwherein the louver is movably positioned to form a fiber spinning line, wherein air entrainment is blocked from only one side of the fiber spinning line.9. The melt blowing apparatus of claim 8 , wherein the louver is angled at a non-90 degree angle to provide an enhanced shielding effect of the zone.10. The melt blowing apparatus of claim 1 , wherein the at least ...

CLEANING DEVICE AND ELECTROSPINNING APPARATUS

According to one embodiment, a cleaning device cleans a nozzle provided on a nozzle head of an electrospinning apparatus. The device includes a storage part and a cleaning part. The storage part is box-shaped, and one surface of the storage part is open. The cleaning part is provided inside the storage part, is flexible, and is capable of holding a solution. 1. A cleaning device cleaning a nozzle provided on a nozzle head of an electrospinning apparatus , the device comprising:a storage part being box-shaped, one surface of the storage part being open; anda cleaning part provided inside the storage part, being flexible, and being capable of holding a solution.2. The device according to claim 1 , where the cleaning part includes a polymer amorphous body.3. The device according to claim 1 , where the cleaning part includes a base claim 1 , and a plurality of fibers having one end portion held on the base.4. The device according to claim 1 , further comprising: a rotation part rotating the cleaning part.5. The device according to claim 1 , further comprising: a movable part changing a relative position between the nozzle and the cleaning part.6. The device according to claim 1 , further comprising: a supply part provided on the storage part claim 1 , the supply part supplying the solution to the cleaning part.7. The device according to claim 1 , further comprising: a recovery part provided on the storage part claim 1 , the recovery part recovering the solution which is used.8. An electrospinning apparatus comprising:a storage part being box-shaped, one surface of the storage part being open;a cleaning part provided inside the storage part, being flexible, and being capable of holding a solution;a nozzle head including a nozzle;a source material supply part supplying a source material liquid to the nozzle head; anda power supply applying a voltage having a prescribed polarity to the nozzle head. This is a continuation application of International Application PCT/JP2017/ ...

POLYMER EXTRUDERS WITH A DUAL VACUUM ARRANGEMENT AND RELATED METHODS

In particular embodiments, a process for producing bulked continuous carpet filament from recycled polymer utilizes two vacuum pumps in combination with a single extruder. In various embodiments, the dual vacuum arrangement (e.g., at least two vacuum pumps) operably coupled to the single extruder (e.g., MRS extruder) may be configured remove one or more impurities from recycled polymer as the recycled polymer passes through the extruder such that the process: (1) is more effective than earlier processes in removing contaminates and water from the recycled polymer; (2) allows for an increased throughput through a single extruder, which may result in a doubling of a number of thread lines produced from a single extruder; (3) results in a desired intrinsic viscosity for the extruded recycled polymer at the increased throughput; and/or (4) reduces an amount of downtime of a particular production line as a result of cleaning the two vacuum pumps. 1. A method of manufacturing bulked continuous carpet filament , the method comprising: '(i) an MRS Section comprising a plurality of satellite screws, each of the plurality of satellite screws mounted to rotate about its respective central axis;', '(A) providing a multi-screw extruder that comprises(B) providing a first vacuum pump configured to independently maintain a pressure within the MRS Section between about 0 millibars and about 40 millibars, the first vacuum pump being operatively coupled to the MRS Section via a first opening;(C) providing a second vacuum pump arranged in parallel with the first vacuum pump and configured to independently maintain a pressure within the MRS Section between about 0 millibars and about 40 millibars and cooperate with the first vacuum pump to maintain a pressure within the MRS Section between about 0 millibars and about 5 millibars;(D) using the first vacuum pump and the second vacuum pump to maintain the pressure within the MRS Section to between about 0 millibars and about 5 millibars;( ...

SPINNERET

A spinneret () for producing several filaments, comprising a plurality of perforations (), each of which ends on the bottom side of the spinneret () into a respective outlet opening () for pressing a thermoplastic there through for forming the filaments, wherein the outlet openings () are arranged in rows () which extend along a cooling direction (A), from one side of the spinneret () to the opposite side, wherein these rows () are arranged increasingly close together, away from a line (C), along this cooling direction (A) and through the centre of the spinneret (). 1. Spinneret for producing several filaments , comprising a plurality of perforations , each of which ends on the bottom side of the spinneret into a respective outlet opening for pressing a thermoplastic there-through for forming the filaments , wherein the outlet openings are arranged in rows which extend along a cooling direction , from one side of the spinneret to the opposite side , wherein these rows are arranged increasingly close together , away from a line , along this cooling direction and through the centre of the spinneret.2. Spinneret according to claim 1 , characterized in that the distance between successive rows is at most 5 times the diameter of each perforation.3. Spinneret according to claim 2 , characterized in that the distance between successive rows is at most 3 times the diameter of each perforation.4. Spinneret according to claim 3 , characterized in that the distance between successive rows is at most 2.5 times the diameter of each perforation.5. Spinneret according to claim 1 , characterized in that the distance between successive rows is at least 1.25 times the diameter of each perforation.6. Spinneret according to claim 5 , characterized in that the distance between successive rows is at least 1.5 times the diameter of each perforation.7. Spinneret according to claim 1 , characterized in that the outlet openings in each row are arranged increasingly far apart claim 1 , viewed ...

Bulked Continuous Filaments with Trilobal Cross-Section and Round Central Void and Spinneret Plates Producing Filament

Briefly described, embodiments of the present disclosure include trilobal bulked continuous filaments (BCFs) with a generally round central void, spinneret plates with a capillary design for producing the BCFs of the present disclosure, articles and carpets produced from the BCFs of the present disclosure, methods of producing the trilobal BCFs of the present disclosure, and the like. 16-. (canceled)7. A spinneret plate for producing a bulked continuous filament comprising a cluster of three generally U-shaped orifices grouped around a central point , each orifice having an open end and a generally rounded closed end , wherein the closed end points away from the central point.8. The spinneret plate of claim 7 , wherein the filament produced by extruding a synthetic polymer through the orifices of the spinneret comprises a three-sided exterior configuration and a trilobal cross-sectional geometry comprising three lobes defined by three rounded tips and a generally round void extending centrally and axially therethrough claim 7 , and wherein the filament has an exterior modification ratio of about 1.35 to 1.85 and a tip ratio of about 2 to 5.9. A spinneret plate for producing a bulked continuous filament comprising:a cluster of three generally U-shaped orifices grouped around a central point, wherein each orifice having an open end and a generally rounded closed end, wherein the closed end points away from the central point,each orifice having an outer edge and an inner edge,the outer edge defined by first and second outer parallel lines extending from the open end of the “U” towards the closed end and joined at the closed end by a curved portion which defines the generally rounded closed end of the “U”, andthe inner edge forming the open end of the “U” and defined by first and second inner parallel lines extending from the open end of the “U” substantially parallel to the first and second outer parallel lines and joined by a third inner line being substantially ...

NOZZLE HEAD AND ELECTROSPINNING APPARATUS

According to one embodiment, a nozzle head includes a main body having a space in an interior of the main body, the space being capable of storing a source material liquid, a first nozzle provided at the main body, the first nozzle ejecting the source material liquid stored in the main body, and a second nozzle provided at the main body, the second nozzle supplying a cleaning liquid to a vicinity of an outlet of the first nozzle.

Method for improving quality of polyester industrial yarn

A method for improving the quality of a polyester industrial yarn is provided. First, in the cooling process of preparing a polyester industrial yarn prepared by polyester spinning, the longitudinal height is kept unchanged, and the cross-sectional area of the slow cooling chamber is enlarged. The chamber maintains the surface temperature of the spinneret by means of heat preservation, and then uses an oil agent containing 67.30-85.58 wt % crown ether in the oiling process of polyester industrial yarn prepared by polyester spinning. Enlarging the cross-sectional area of the slow-cooling chamber refers to the cross section of the slow cooling chamber is changed from a circular shape to a rectangular shape while keeping the spinneret connected to the slow cooling chamber unchanged. The cleaning cycle of the spinneret is prolonged by 35-45%, the full package rate of polyester industrial yarn is larger than 99%.

SYSTEMS AND METHODS FOR PRODUCING A BUNDLE OF FILAMENTS AND/OR A YARN

Systems for producing M yarns, wherein M≥1, include N extruders, M spin stations, and a processor, wherein N>1. Each extruder includes a thermoplastic polymer having a color, hue, and/or dyability characteristic, which are different from each other. Each spin station produces one yarn comprising at least one bundle of filaments. Each spin station comprises at least one spinneret through which filaments are spun from at least two molten thermoplastic polymer streams received by the respective spin station and N spin pumps upstream of the spinneret for the respective spin station. Each spin pump is paired with one of the N extruders. The processor is in electrical communication with the N*M spin pumps and is configured to adjust the volumetric flow rate of the polymers pumped from each spin pump to achieve a ratio of the polymers to be included in each M yarn. 1. A system for producing at least one bundle of filaments , the system comprising:N extruders, wherein N is an integer greater than 1, each extruder comprising a thermoplastic polymer having a color, hue, and/or dyability characteristic, the colors, hues, and/or dyability characteristics of the thermoplastic polymers in the N extruders being different from each other; and at least one spinneret through which a plurality of melt-spun filaments are spun from at least two of the molten thermoplastic polymer streams received by the spin station; and', 'a group of N spin pumps upstream of the spinneret, wherein each spin pump is in fluid communication and is paired with one of the N extruders; and, 'at least one spin station for receiving molten thermoplastic polymer streams from the N extruders, the spin station comprisinga processor in electrical communication with the N spin pumps, the processor being configured to execute computer readable instructions that cause the processor to adjust a volumetric flow rate of the thermoplastic polymers pumped by each spin pump to achieve a ratio of the thermoplastic polymers ...

SPINNING METHOD AND SPINNING DEVICE

A nozzle device for spinning comprising a nozzle, a polymer solution supply means that supplies a polymer solution to the nozzle and ejects the polymer solution from the nozzle tip, and a solvent vapor supply means that supplies a gas containing vapor of the same solvent as the solvent of the polymer solution at least to the vicinity of the polymer solution just ejected, and a spinning method using the nozzle device for spinning. Solidification of a spinning solution is prevented at the nozzle tip from which the spinning solution is ejected. 1. A nozzle device for spinning , comprising a nozzle , a polymer solution supply means for supplying a polymer solution to a nozzle to eject it from a nozzle tip , and a solvent vapor supply means for supplying a gas containing the vapor of the same solvent as a solvent of the polymer solution at least to the periphery of the polymer solution just ejected.2. The nozzle device for spinning according to claim 1 , wherein the device has a double tubular structure part composed of an inner tube claim 1 , the inner tube being a nozzle claim 1 , and an outer tube surrounding it claim 1 , and is configured such that a gas containing the vapor of the same solvent as the solvent of the polymer solution is supplied from a space between the inner tube and the outer tube.3. A method of spinning fibers containing a polymer claim 1 , comprising a step of ejecting a polymer solution from a nozzle tip claim 1 , wherein spinning is performed while supplying a gas containing the vapor of the same solvent as a solvent of the polymer solution at least to the periphery of the polymer solution just ejected.4. The spinning method according to claim 3 , wherein the gas to be supplied contains a substance that is in a gaseous phase under the condition at the time of spinning claim 3 , and is saturated with the vapor of the same solvent as the solvent of the polymer solution. The present invention relates to a method of spinning fibers including a ...

SYSTEM AND METHOD FOR FORMING NONWOVEN NANOFIBER MATERIAL

A system and method for forming non-woven fibers includes an extruder for melting a substance, a nozzle on an end of the extruder for outputting the melted substance, and a gas source in fluid communication with the nozzle. The nozzle may be configured to output the substance in a melted form at atmospheric pressure proximate an output of the gas source. The system may be configured to output a gas stream at lower temperature. 1. A system for forming non-woven fibers , comprising:an extruder for melting a substance;a nozzle on an end of the extruder; anda gas source in fluid communication with the nozzle,wherein the nozzle is configured to output the substance in a melted form at atmospheric pressure proximate an output of the gas source.2. The system of claim 1 , wherein the system is configured to output the gas at a temperature below 200 degrees Celcius.3. The system of claim 1 , wherein the nozzle comprises a substance aperture for outputting the substance and a gas aperture for outputting the gas claim 1 , wherein the substance aperture is proximate the gas aperture.4. The system of claim 3 , wherein the substance aperture is above the gas aperture.5. The system of claim 3 , wherein the substance aperture has a rectangular shape.6. The system of claim 3 , wherein the system is configured such that the gas stream is output at a pressure of 80 psi to 100 psi.7. The system of claim 6 , wherein the system is configured such that the output gas stream is between 20 and 60° C. at a distance 15 centimeters from a front face of the nozzle.8. The system of claim 3 , wherein the nozzle comprises a plurality of substance apertures.9. The system of claim 3 , wherein the substance aperture and gas aperture are flush with the nozzle face and are defined as passages through an integral and monolithic nozzle face.10. A method of forming non-woven fibers claim 3 , comprising:melting a substance in an extruder;dispensing the melted substance through a nozzle on an end of the ...

QUENCH TUBE FOR POLYMER FIBER EXTRUSION

The quench tube comprises a cylindrical wall through which quenching air flows when the quench tube is in use. The cylindrical wall comprises metal fibers in a nonwoven fiber structure. The metal fibers are bonded to each other at contacting points by means of metallurgical bonds thereby forming a three dimensionally bonded fiber structure. 110-. (canceled)11. A quench tube for quenching polymer fibers in fiber extrusion ,wherein said quench tube comprises a cylindrical wall through which quenching air flows when the quench tube is in use;wherein said cylindrical wall comprises metal fibers in a nonwoven fiber structure; andwherein said metal fibers are bonded to each other at contacting points by means of metallurgical bonds thereby forming a three dimensionally bonded fiber structure.12. The quench tube as in claim 11 , wherein a majority of said metal fibers at least partially encircle the axis of said cylindrical wall.13. The quench tube as in claim 11 , wherein said metal fibers are part of a fiber structure claim 11 , wherein the fiber structure is coiled around the central axis of the quench tube.14. The quench tube as in claim 13 , wherein the fiber structure is a nonwoven fiber web.15. The quench tube as in claim 13 , wherein the fiber structure comprises at least one fiber bundle.16. The quench tube as in claim 14 , wherein the fiber structure comprises at least one fiber bundle.17. The quench tube as claim 11 , wherein the porosity of the quench tube is within the range of 60 to 95%.18. The quench tube as claim 11 , wherein said cylindrical wall consists over its full wall thickness out of said metal fibers in a nonwoven fiber structure.19. A method to manufacture a quench tube as in claim 11 , comprising the steps ofproviding an elongated metal fiber structure,coiling said elongated metal fiber structure around a core, in order to obtain a cylindrical shape of the coiled elongated metal fiber structure,metallurgically bonding the so-obtained cylindrical ...

SPANDEX FIBER DRY SPINNING COMPONENT AND SPINNING PART

The present invention provides an elastic fiber dry spinning component and spinning part. The spinning component includes: a temperature control box () including a box body (), wherein the box body () is longitudinally provided with multiple polymer solution channels () separated from each other; areas in the box body () other than the polymer solution channels () are cavities, and the cavities are used for circulation of a fluid medium that exchanges heat with an elastic fiber dry spinning polymer solution in the polymer solution channels (); and a spinneret part () detachably connected to the temperature control box (), wherein the spinneret part () includes multiple spinneret orifice sets () separated from each other, and the multiple spinneret orifice sets () are correspondingly in communication with outlets of the multiple polymer solution channels (). The spinning part includes a metering device and the above-mentioned spinning component; the metering device is detachably connected to the temperature control box () and is used for metering and allocating the elastic fiber dry spinning polymer solution to the multiple polymer solution channels (). The spinning component and the spinning part are convenient to install and maintain and are highly efficient. 1. An elastic fiber dry spinning component , comprising:a temperature control box comprising a box body, wherein the box body is longitudinally provided with multiple polymer solution channels separated from each other;cavities in areas in the box body other than the polymer solution channels, wherein the cavities are used for circulation of a fluid medium that exchanges heat with an elastic fiber dry spinning polymer solution in the polymer solution channels; anda spinneret part detachably connected to the temperature control box, wherein the spinneret part comprises multiple spinneret orifice sets separated from each other, and wherein each of the multiple spinneret orifice sets is correspondingly in ...

Non-round solution spun spandex filaments and methods and devices for production thereof

Non-round or shaped solution spun spandex filaments as well as methods and devices for production of these non-round or shaped solution spun spandex filaments are provided.

Multi-Zone Spinneret, Apparatus and Method for Making Filaments and Nonwoven Fabrics Therefrom

A spinneret, apparatus, and method are provided for making filaments for fibrous nonwoven fabrics with more uniform filament and fabric formation while minimizing filament breaks and hard spot defects in webs and fabrics made therefrom. The spinneret has a spinneret body that has an overall length to hydraulic diameter ratio and defines orifices that extend through the spinneret body, wherein the orifices comprise capillaries that open at a face of the spinneret body for polymer filament extrusion therefrom, wherein the capillaries are arranged in a plurality of different rows at the face of the spinneret body, and wherein the plurality of different rows are arranged into a plurality of different zones at the face of the spinneret body. A spinneret body of the spinneret can have an overall length to hydraulic ratio of at least 3 percent and/or a zone-to-zone length to hydraulic ratio of at least 2% and/or the hydraulic diameters, lengths, and length to hydraulic diameter ratios can progressively increase or decrease zone-to-zone for at least three different zones of capillaries, which can be applied to cross-flow quench or quench from a single-side. The spinneret body is designed to better accommodate differing operational proximity of the various different zones to quench air sources or source at commercially useful throughputs and fiber uniformity. 151-. (canceled)52. A process for melt-spinning polymeric filaments , comprising:extruding molten polymer through a spinneret to produce a plurality of extruded filaments below the spinneret;passing the plurality of extruded filaments through a quench region below the spinneret, wherein said extruded filaments are quenched by directing at least one stream of cooling gas beneath the spinneret and across the extruded filaments to provide a plurality of quenched filaments; andcollecting the plurality of quenched filaments,wherein the spinneret comprises:a spinneret body having a non-circular periphery and is configured to ...

SPINNERETS AND SPINNERET ARRAYS FOR ELECTROSPINNING AND ELECTROSPINNING MACHINES

This disclosure relates to air-assisted spinnerets and spinneret arrays for electrospinning. In some embodiments, the air-assisted spinnerets and spinneret arrays are incorporated in electrospinning systems and/or electrospinning machines. Methods of making and using the same are also described herein. 1. An air-assisted electrospinning spinneret comprising:a spinneret needle, wherein the spinneret needle is electrically conductive and comprises a tip;an enclosure, wherein the enclosure has a nozzle that the spinneret needle passes through; anda plurality of air holes in the nozzle, wherein each air hole defines an air path converging at the spinneret needle tip.2. The spinneret of claim 1 , further comprising a spin dope plenum; wherein the spin dope plenum is housed within the enclosure claim 1 , and wherein the spinneret needle is in fluid communication with the plenum.3. The spinneret of claim 1 , wherein the needle is made of a metal.4. The spinneret of claim 2 , wherein the spinneret needle further comprises an outer sleeve that forms a channel.5. The spinneret of claim 4 , wherein the channel is in fluid communication with a spin dope plenum or a spin dope reservoir.6. The spinneret of claim 1 , wherein the plurality of air holes is between 4 and 12 air holes.7. The spinneret of claim 1 , wherein there are an even number of air holes.8. The spinneret of claim 1 , wherein the spinneret needle has an inner diameter between about 0.4 mm and about 1.5 mm.9. The spinneret of claim 1 , wherein the spinneret needle is between about 0.5 inches in length and about 10 inches in length.10. The spinneret of claim 1 , wherein the spinneret needle extends beyond the enclosure a distance of between about 0.2 inches and about 4 inches.11. A spinneret array comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'two or more air-assisted electrospinning spinnerets of , wherein the spinneret needles are separated to form a distance between the spinneret needles, and ...

MULTI-LAYERED OR MULTIPLE POLYMER FINE FIBER WEBS

A material comprising unique nanofiber layers, and more particularly, this invention relates to a method for creating a material that is made from multiple unique nanofiber layers that can be utilized as filter media among other applications. The nanofiber layers have a plurality of fine fibers with an average diameter of less than 1 micron. In embodiments, the fine fibers are formed from a polymer. The material can be created according to a method in which the fine fiber strands are formed from a polymer melt or a polymer solution. The fine fibers can then be layered on top of one another to form materials such as filter media. 1. A filter media comprising:polymeric fine fibers, including a first layer of fine fibers and a second layer of fine fibers;wherein the first layer of fine fibers and the second layer of fine fibers have an average diameter of less than 1 micron; andwherein the first layer of fine fibers are unique relative to the second layer of fine fibers.2. The filter media of claim 1 , wherein the first layer of fine fibers comprises a first polymer and the second layer comprises a second polymer different than the first polymer.3. The filter media of claim 2 , wherein the filter media has a substrate layer and an outermost layer comprising the second layer of fine fibers claim 2 , with the first layer therebetween.4. The filter media of claim 3 , wherein the outermost layer comprises a flame retardant polymer claim 3 , and wherein the first layer does not comprise a flame retardant polymer.5. The filter media of claim 4 , wherein the flame retardant polymer comprises at least one of Aramids claim 4 , Polyimide claim 4 , Polyetherimide claim 4 , or liquid crystal polymers.6. The filter media of claim 1 , wherein the fine fibers of one of the first and second layers an additive integral with the fine fibers claim 1 , and wherein the fine fibers of the other one of the first and second layers is free of the additive.7. The filter media of claim 6 , ...

THREE-DIMENSIONAL POLYMERIC STRAND NETTING, DIES, AND METHODS OF MAKING THE SAME

Three-dimensional polymeric strand netting, wherein a plurality of the polymeric strands are periodically joined together in a regular pattern at bond regions throughout the array, wherein a majority of the polymeric strands are periodically bonded to at least two (three, four, five, six, or more) adjacent polymeric strands, and wherein no polymeric strands are continuously bonded to a polymeric strand. Three-dimensional polymeric strand netting described herein have a variety of uses, including wound care, tapes, filtration, absorbent articles, pest control articles, geotextile applications, water/vapor management in clothing, reinforcement for nonwoven articles, self bulking articles, floor coverings, grip supports, athletic articles, and pattern coated adhesives. 18.-. (canceled)9. A method of making a three-dimensional polymeric strand netting , wherein a plurality of the polymeric strands are periodically joined together in a regular pattern at bond regions throughout the netting , wherein at least some of the polymeric strands are periodically bonded to at least three adjacent polymeric strands , and wherein no polymeric strands are continuously bonded to another polymeric strand , the method comprising:providing an extrusion die comprising a plurality of shims positioned adjacent to one another, the shims together defining at least a first and a dispensing surface, wherein the dispensing surface has a first array of first dispensing orifices and a second array of second dispensing orifices positioned adjacent to each other, alternating with a third array of third dispensing orifices, wherein the plurality of shims comprises a plurality of a repeating sequence of shims, wherein the repeating sequence comprises a shim that provides a fluid passageway between a cavity and one of the first dispensing orifices, a shim that provides a fluid passageway between a cavity and one of the second dispensing orifices, and a shim that provides a fluid passageway between a ...

HEAD UNIT, ELECTROSPINNING HEAD, AND ELECTROSPINNING APPARATUS

According to one embodiment, an electrospinning head includes a plurality of head units and a coupling structure, and the plurality of head units are coupled to one another through the coupling structure. Each head unit includes a unit main body and a nozzle. Inside the unit main body, a hollow storing a raw material liquid is formed along a longitudinal axis. The nozzle is formed of a conductive material and provided on an outer circumferential surface of the unit main body. The nozzle ejects the raw material liquid supplied through the hollow of the unit main body. The coupling structure connects the plurality of head units in a state where the hollows of the unit main bodies communicate with one another.

System and Method for Forming NonWoven Nanofiber Material

A system and method for forming non-woven fibers includes an extruder for melting a substance, a nozzle on an end of the extruder for outputting the melted substance, and a gas source in fluid communication with the nozzle. The nozzle may be configured to output the substance in a melted form at atmospheric pressure proximate an output of the gas source. The system may be configured to output a gas stream at lower temperature.

DENTAL CORD USING NANOFIBER CONJUGATE YARN, AND MANUFACTURING METHOD THEREFOR

Provided is a dental cord using a nanofiber multiple yarn having a large specific surface area and a large number of three-dimensional pores, thereby effectively impregnating a drug such as a hemostatic agent, and a method of manufacturing the dental cord. The dental cord includes: a nanofiber multiple yarn which is obtained by plying and twisting at least two nanofiber tape yarns and which is impregnated with a drug, wherein the at least two nanofiber tape yarns are integrated by nanofibers made of fiber moldability polymer materials and having an average diameter of less than 1 μm, to thus be formed of a nanofiber web having three-dimensional micropores. 1. A dental cord comprising:a nanofiber multiple yarn which is obtained by plying and twisting at least two nanofiber tape yarns and which is impregnated with a drug,wherein the at least two nanofiber tape yarns are integrated by nanofibers made of fiber moldability polymer materials and having an average diameter of less than 1 μm, to thus be formed of a nanofiber web having three-dimensional micropores.2. The dental cord of claim 1 , wherein the nanofiber multiple yarn is formed by plying and twisting two or three nanofiber tape yarns.3. The dental cord of claim 1 , wherein the nanofiber multiple yarn is configured so that a covered yarn is covered with the nanofiber tape yarn.4. The dental cord of claim 3 , wherein the covered yarn is made of natural fibers.5. The dental cord of claim 1 , wherein the nanofiber tape yarn is obtained by slitting the nanofiber web at a width of 0.1 mm to 10 mm.6. The dental cord of claim 1 , wherein the average pore size of the nanofiber web is set to 0.2 μm to 1.0 μm claim 1 , and the fiber diameter is set to 0.05 μm to 1 μm.7. A method of manufacturing a dental cord claim 1 , the method comprising the steps of:producing a spinning solution, by dissolving a fiber-moldability polymer material in a solvent to prepare a spinning solution;spinning the spinning solution to obtain a ...

Composite spinneret that produces multicomponent fibers

A composite spinneret that discharges a composite polymer composed of an island polymer and a sea polymer, the composite spinneret satisfying (1) and (2): (1) the composite spinneret comprises: a distribution device; a nozzle plate; a flow contraction plate; and (2) the nozzle plate has a nozzle hole collection including a plurality of discharge holes, and at least one sea-island discharge hole group including any of (i) to (v): (i) the sea discharge holes and the island discharge hole; (ii) the composite polymer discharge holes; (iii) the sea discharge holes and the composite polymer discharge holes; (iv) the island discharge holes and the composite polymer discharge holes; and (v) the sea discharge holes, the island discharge holes and the composite polymer discharge holes.

Electrospinning head and electrospinning apparatus

In one embodiment, an electrospinning head has a nozzle unit and a control body. The nozzle unit is arranged opposite to a base material, is applied with a voltage, and thereby is capable of discharging a raw material liquid of fiber. The control body is arranged in the vicinity of the nozzle unit so as to extend to an outside of a spinning space between the base material and the nozzle unit. Further, the control body is applied with a voltage of the same polarity as the voltage to be applied to the nozzle unit, and thereby is capable of making an electric field to be generated at the periphery of the nozzle unit.

COMPOSITE HOT-MELT ADHESIVE NET FILM AND MANUFACTURING PROCESS THEREOF

A composite hot-melt adhesive mesh film and preparation process thereof, in particular, a composite hot-melt adhesive mesh film and preparation process thereof for bonding metal and non-polar material are disclosed. The mesh film is compounded of a polar polyamide hot-melt adhesive and a non-polar polyolefin hot-melt adhesive mesh film containing a compatibilizer. The mesh film has a high adhesive strength and a durable and stable adhesion, and is especially suitable for bonding stainless steel, aluminum, copper or other metal materials and polyethylene, polypropylene or other non-polar polymers. Additionally, the preparation process is completed in one set of production process from raw material pretreatment to the final preparation of the hot melt adhesive mesh film product, thereby greatly reducing production failures, and providing high production efficiency and low costs. 1. A composite hot melt adhesive mesh film , which is compounded by a polyamide hot melt adhesive mesh film and a polyolefin hot melt adhesive mesh film , wherein: a polyamide hot melt adhesive used for producing the polyamide hot melt adhesive mesh film has a differential scanning calorimetry final melting point of 116° C. to 130° C. and a melt flow rate of 30 g/10 min/160° C. to 50 g/10 min/160° C.; a polyolefin hot melt adhesive used for producing the polyolefin hot melt adhesive mesh film comprises the following components in mass by percentage: 8% to 15% of compatibilizer , 50% to 70% of polyethylene , 3% to 10% of other polyolefin , 0.2% to 0.8% of initiator , 0.7% to 1.3% of silane coupling agent , 8% to 20% of tackifier , 1.0% to 10% of inorganic filler and 0.4% to 0.8% of antioxidant.2. The composite hot melt adhesive mesh film according to claim 1 , wherein the compatibilizer is one selected from the group consisting of maleic anhydride grafted high density polyethylene claim 1 , maleic anhydride grafted low density polyethylene claim 1 , maleic anhydride grafted polypropylene claim ...

SPINNING BEAM FOR PRODUCING MELT-SPUN FILAMENTS

A spinning beam for producing melt-spun filaments, in which liquid plastics material is conveyed via an externally arranged extruder to at least one pump, which conveys the liquid plastics material to at least one spin pack having a spinneret, at least the pump and the spin pack being heated by a heat transfer medium which is heated in a boiler. The pump, the boiler and an opening for receiving a spin pack are arranged in a modular assembly, which can be installed and fixed singly, or in a plurality one behind the other, in a frame of the spinning beam. 1. A spinning beam for producing melt-spun filaments , comprising:a frame;at least one spin pack having a spinneret;an externally arranged extruder to convey liquid plastics material;at least one pump arranged to receive the liquid plastics material from the externally arranged extruder and to convey the liquid plastics material to the at least one spin pack;a boiler to heat a heat transfer medium, wherein at least the pump and the spin pack are arranged to be heated by the heat transfer medium and wherein at least the pump, the boiler and structure defining at least one opening for receiving the at least one spin pack, respectively, are arranged in at least one modular assembly installed installable and fixable singly, or in a plurality one behind the other, in the frame of a spinning beam.2. The spinning beam according to claim 1 , wherein the at least one modular assembly includes a suspension comprising at least two cross-members.3. The spinning beam according to claim 2 , further comprising at least one heat chamber claim 2 , wherein the cross-members are connected to the at least one heat chamber to form the at least one opening for receiving the at least one spin pack claim 2 , respectively.4. The spinning beam according to claim 1 , wherein the frame includes a long side and the pump is arranged horizontally and transversely claim 1 , or perpendicularly claim 1 , to the long side of the frame.5. The spinning ...

SPINNING NOZZLE, PROCESS FOR PRODUCING FIBROUS MASS, FIBROUS MASS, AND PAPER

A spinning nozzle which has a perforated part in which ejection holes have been arranged in a density as high as 600-1,200 holes/mm. This process for producing a fibrous bundle comprises ejecting a spinning dope having a viscosity as measured at 50° C. of 30-200 P from the ejection holes of the spinning nozzle to produce a fibrous bundle. This fibrous bundle has a single-fiber fineness of 0.005-0.01 dtex. By the wet-process direct spinning, a mass of nanofibers which are stably uniform and continuous can be produced at a high efficiency. 1. A spinning nozzle comprising a perforated part having a number of ejection holes per square mm of at least 600 holes/mmto no more than 1 ,200 holes/mm.2. The spinning nozzle according to claim 1 , wherein one of the ejection holes has an opening area of is at least 100 μmto no more than 350 μm.3. The spinning nozzle according to claim 1 , wherein the number of the ejection holes is at least 8×10to no more than 25×10holes.4. The spinning nozzle according to claim 1 , having an inter-outer edge distance between a first ejection hole and a second ejection hole closest to the first ejection hole of at least 10 μm to no more than 20 μm.5. The spinning nozzle according to claim 1 , wherein all of the ejection holes have a course for which a distance from an outer edge of the ejection holes to a perforated part outer peripheral line of the perforated part is no more than 2 mm.6. A process for producing a fibrous bundle claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'ejecting a spinning dope from the ejection holes of the spinning nozzle according to ; and'}obtaining the fibrous bundle,{'sup': 3', '5, 'wherein the fibrous bundle comprising fibers has a single-fiber fineness of at least 0.005 dtex to no more than 0.01 dtex, and a total fineness of at least 4×10dtex to no more than 8×10dtex.'}7. The process according to claim 6 , wherein of the spinning dope has a viscosity at 50° C. of at least 30 poise to no more ...

Nozzle and a method for the production of micro and nanofiber nonwoven mats

The present invention is a novel gas assisted nozzle and a method for micro and nanofiber production. In this composite nozzle, a high velocity gas stream is introduced through a core protruding orifice, while a liquid is introduced via at least one satellite orifice, external to the core orifice. The liquid flow is picked-up and accelerated (blown) by the gas stream from the tip of the protruding gas nozzle. This avoids passing the high velocity gas over the surface of the slow flowing liquid and achieves the acceleration of the liquid flow on its approach to being picked-up by the gas stream. Proper control of the gas and the polymer liquid flow results in fine liquid blowing and formation of micro and nanofibers.

EXTRUSION HEAD FOR GENERATING FILAMENTS, EXTRUSION INSTALLATION AND METHOD USING SAID EXTRUSION HEAD

The present invention relates to an extrusion head for generating filaments, extrusion installation and method using said extrusion head, the extrusion head comprising an inlet for the introduction by pressure of a solvent and polymer solution, and an extrusion plate provided with extrusion nozzles configured for forming filaments from the solvent and polymer solution, where the inlet is in fluid communication with a laminar chamber through which the solvent and polymer solution circulates to a peripheral chamber from which it is radially distributed into a central chamber in which the extrusion plate is arranged, and where the laminar chamber is in fluid communication with an excess solvent outlet, and the central chamber is in fluid communication with an excess solution outlet. 1. An extrusion head for generating filaments , comprising an inlet for the introduction by pressure of a solvent and polymer solution , and an extrusion plate provided with extrusion nozzles configured for forming filaments from the solvent and polymer solution , wherein the inlet is in fluid communication with a laminar chamber through which the solvent and polymer solution circulates to a peripheral chamber from which it is radially distributed into a central chamber in which the extrusion plate is arranged , where the laminar chamber is in fluid communication with an excess solvent outlet , and the central chamber is in fluid communication with an excess solution outlet.2. The extrusion head for generating filaments according to claim 1 , wherein it additionally comprises a storage tank provided with a polymer feed inlet claim 1 , a solvent feed inlet claim 1 , a solvent and polymer solution outlet in fluid communication with the inlet claim 1 , a solvent recovery inlet in fluid communication with the excess solvent outlet claim 1 , and a solution recovery inlet in fluid communication with the excess solution outlet.3. The extrusion head for generating filaments according to claim 2 , ...

SPINNING PACK FOR MANUFACTURING HIGH STRENGTH YARN, AND YARN MANUFACTURING APPARATUS AND METHOD

One embodiment of the present disclosure provides a spinning pack, a yarn manufacturing apparatus including the spinning pack, a yarn manufacturing method using the yarn manufacturing apparatus, and yarn manufactured by the manufacturing method. The spinning pack includes a spinneret having a nozzle unit, a heating unit for heating the nozzle unit, a pack body surrounding at least a part of the spinneret, and a spinning block surrounding the pack body, wherein the spinneret includes a first surface which defines a storage space while facing at least one surface of the spinning block, and a second surface facing the first surface, wherein the nozzle unit includes a plurality of discharge holes and protrudes from the second surface; and wherein the heating unit is disposed at the outer side of the nozzle unit. 1. A spinning pack comprising:a spinneret having a nozzle unit;a heating unit for heating the nozzle unit;a pack body surrounding at least a part of the spinneret; anda spinning block surrounding the pack body,wherein the spinneret includes a first surface which defines a storage space while facing at least one surface of the spinning block, and a second surface facing the first surface,wherein the nozzle unit includes a plurality of discharge holes and protrudes from the second surface, andwherein the heating unit is disposed at the outer side of the nozzle unit.2. The spinning pack of claim 1 ,wherein the heating unit is disposed between the second surface and the end part of the nozzle unit.3. The spinning pack of claim 1 ,wherein the heating unit is in contact with the second surface or is spaced apart from the second surface at an interval of 20 mm or less from the second surface.4. The spinning pack of claim 1 ,wherein the heating unit includes a heating wire.5. The spinning pack of claim 1 ,wherein the heating unit heats the nozzle unit at a temperature of 400 to 600° C.6. The spinning pack of claim 1 , further comprising a heater disposed in the spinning ...

High tenacity, high modulus filament

Polyethylene solutions are extruded through a multi-orifice spinneret into a cross-flow gas stream to form a fluid product. The fluid product is stretched at a temperature at which a gel will form at a stretch ratio of at least 5:1 over a length of less than about 25 mm with the cross-flow gas stream velocity at less than about 3m/min. The fluid product is quenched in a quench bath consisting of an immiscible liquid to form a gel. The gel is stretched. The solvent is removed from the gel to form a xerogel and the xerogel product is stretched in at least two stages to produce a polyethylene yarn characterized by a tenacity of at least 35g/d, a modulus of at least 1600 g/d and a work to break of at least 65 J/g. The yarn is further characterized by having greater than about 60 % of a high strain orthorhombic crystalline component and, optionally, a monoclinic crystalline component greater than about 2 % of the crystalline content. Composite panels made with these yarns exhibit excellent ballistic resistance, e.g., SEAC of 300J-m2/Kg or higher against .38 caliber bullets using test procedure NILECJ-STD-0101.01. A ballistic resistant composite panel is provided comprising a polyethylene multi-filament yarn having a tenacity of at least about 35 g/d, a modulus of at least 1600 g/d, a work-to-break of at least about 65 J/g wherein the yarn has greater than about 60 % of a high strain orthorhombic crystalline component and the yarn has a monoclinic crystalline component greater than about 2 % of the crystalline content.

Heater for use in the manufacture of plastics filaments

A heater for use in the manufacture of spun plastics filaments which comprises two portions each having a truncated right polygonal pyramidal or truncated right conical internal surface that is open ended, the internal surface of one of the portions is heated while the internal surface of the other portion is thermally reflective and at the smaller end of the heated portion a screen is arranged to reduce the effective area of the said smaller opening. With the use of the heater spun filaments can be produced having a low degree of preorientation and a satisfactory uniformity.

Apparatus for electro-blowing or blowing-assisted electro-spinning technology and process for post treatment of electrospun or electroblown membranes

A spinneret format, an electric-field reversal format and a process for post-treatment of membranes formed from electro-spinning or electro-blowing are provided, including a cleaning method and apparatus for electro-blowing or blowing-assisted electro-spinning technology.

POLYETHYLENE YARN OF HIGH TENACITY HAVING HIGH DIMENSIONAL STABILITY AND METHOD FOR MANUFACTURING THE SAME

The present disclosure relates to a polyethylene yarn and a method for manufacturing the same. In the present disclosure, there are provided a polyethylene yarn having excellent dimensional stability and high tenacity, and a method for manufacturing the above polyethylene yarn more efficiently.

SYSTEM AND PROCESS FOR PREPARING A FIBROUS NONWOVEN COMPOSITE FABRIC

A system having a first polymer source and a spin beam in fluid communication with the first polymer source is provided. The spin beam includes a spinneret assembly having filament nozzles configured and arranged to extrude a plurality of filaments of a first polymer. A gas distribution plate is disposed downstream of the spinneret assembly, and includes a plurality of gas distribution slots that are configured and arranged to receive two or more corresponding filament nozzles of the spinneret assembly therein. A stream of gas is introduced into the plurality of slots to draw and attenuate the filaments extruded by the plurality of filament nozzles. The drawn and attenuated filaments are collected on a collection surface disposed downstream of the gas distribution plate to form a nonwoven fabric. A solid additive, such as pulp fibers may be blended with the filaments prior to collecting the filaments on the collection surface. 1. A system for preparing a nonwoven fabric comprising:a first polymer source;a spin beam in fluid communication with the first polymer source, the spin beam including a spinneret assembly having a plurality of rows of filament nozzles that are arranged in an array, the filament nozzles being configured and arranged to extrude a plurality of filaments comprising a first polymer provided by the first polymer source;a gas distribution plate disposed downstream of the spinneret assembly, the gas distribution plate including a plurality of gas distribution slots that are each associated with one or more of the rows of the filaments nozzles;a gas source in fluid communication with the plurality of gas distribution slots such that a stream of gas is introduced into the plurality of gas distribution slots to draw and attenuate the filaments extruded by the plurality of filament nozzles; anda collection surface disposed downstream of the gas distribution plate for collecting the drawn and attenuated filaments thereon to form a nonwoven fabric.2. The ...

Apparatus and method for controlled width extrusion of filamentary curtain

The invention provides a method for controlling the width of a plurality of extruded filaments comprising providing a polymer supply and an extrusion die comprising a plurality of extrusion capillaries and a plurality of counterbores allowing fluid communication between the extrusion capillaries and polymer supply, providing an adjustable insert for interrupting fluid communication between the polymer supply and at least one extrusion capillary, providing at least one fluidized polymer, conveying the polymer through the polymer supply, counterbores and extrusion capillaries to extrude a plurality of filaments, and interrupting the fluid communication between the polymer supply and at least one extrusion capillary by adjusting the insert. An apparatus for extruding filaments is also provided, comprising an extrusion die, polymer supply, extrusion capillaries, counterbores allowing fluid communication between the capillaries and polymer supply, and an adjustable insert for interrupting fluid communication between the polymer supply and at least one extrusion capillary.

Apparatus and method for nonwoven fibrous web

Disclosed is an apparatus and method for producing nonwoven fibrous webs. The apparatus comprises an extrusion die, first and second fluid supplies in cooperation with the die, first and second extrusion capillaries, first counterbores allowing fluid communication between first capillaries and first supply and second counterbores allowing fluid communication between second capillaries and second supply, each first counterbore having at least two first capillaries extending therefrom. The method comprises providing an extrusion die in communication with first and second fluid supplies and the die comprising first and second extrusion capillaries, first counterbores and second counterbores, each first counterbore having at least two of the first capillaries extending therefrom, providing a first fluidized polymer and a second fluid, conveying the polymer through the first supply, first counterbores and first capillaries to extrude a first plurality of fibers, and conveying the second fluid through the second supply, second counterbores and second capillaries.

Apparatus and method for controlled width extrusion of filamentary curtain

The invention provides a method for controlling the width of a plurality of extruded filaments comprising providing a polymer supply and an extrusion die comprising a plurality of extrusion capillaries and a plurality of counterbores allowing fluid communication between the extrusion capillaries and polymer supply, providing an adjustable insert for interrupting fluid communication between the polymer supply and at least one extrusion capillary, providing at least one fluidized polymer, conveying the polymer through the polymer supply, counterbores and extrusion capillaries to extrude a plurality of filaments, and interrupting the fluid communication between the polymer supply and at least one extrusion capillary by adjusting the insert. An apparatus for extruding filaments is also provided, comprising an extrusion die, polymer supply, extrusion capillaries, counterbores allowing fluid communication between the capillaries and polymer supply, and an adjustable insert for interrupting fluid communication between the polymer supply and at least one extrusion capillary.

Apparatus for nonwoven fibrous web

Disclosed is an apparatus for producing nonwoven fibrous webs. The apparatus comprises an extrusion die, first and second fluid supplies in cooperation with the die, first and second extrusion capillaries, first counterbores allowing fluid communication between first capillaries and first supply and second counterbores allowing fluid communication between second capillaries and second supply, each first counterbore having at least two first capillaries extending therefrom.

Method of making oriented filamentary article of isotactic polypropylene

apparatus having screw collector with sawtooth to manufacture polymer composite nano fiber and method using it

The present invention relates to a method and an apparatus for producing a polymer composite nanofiber, comprising a saw-toothed screw collector. According to the present invention, the apparatus comprises: a spinning needle part (10) discharging a polymer solution; a spiral screw part (20) having a tooth in a sawtooth shape; a winding guide part (30) guiding the winding of the fiber discharged from an end portion of the spiral screw part (20); a collector part (40) having a drum (410); and a high voltage power supply part (50) applying positive electrode (+) voltage to the spinning needle part (10) and further applying negative electrode (-) voltage to the collector part (40).

一种湿法无纺布喷丝防堵塞设备

本发明涉及湿法无纺布技术领域，且公开了一种湿法无纺布喷丝防堵塞设备，包括壳体，所述壳体的两侧均固定连接有进水管，进水管的内部滑动连接有活塞块，壳体的内部固定连接有滑轨，滑轨的表面滑动连接有分滤板，分滤板的底部活动连接有转轴，转轴的内部活动连接有扭转弹簧，转轴的表面活动连接有轴套，轴套的表面活动连接有活动板，活动板的表面开设有中空通道，中空通道的内部活动连接有气压块，转轴的下端活动连接有齿轮。后转轴受力而进行旋转，转轴旋转经齿轮带动扇叶转动，与此同时，原料流入扇叶的表面，后被扇叶旋转产生的离心力甩至导流槽的表面，进而从设定好的喷丝孔中喷出，故从而达到了原液喷丝压力与原液量相适配的效果。

Conjugate electrospinning devices, conjugate nonwoven and filament comprising nanofibers prepared by using the same

본 발명은 굵기가 나노수준으로 가는 섬유(나노섬유) 제조용 복합 전기방사장치 및 이를 이용하여 제조된 나노섬유에 관한 것이다. 본 발명의 전기방사장치는 방사용액 주탱크(1), 계량펌프(2), 노즐블록(4), 상기 노즐블록에 설치된 노즐(5), 상기 노즐블록으로 부터 방사되는 섬유들을 집적하는 컬렉터(7) 및 노즐블록(4)과 컬렉터(7)로 전압을 걸어주기 위한 전압발생장치(9)로 구성된 전기방사장치에 있어서, [ⅰ]노즐블록(4)에 서로 다른 2종 이상의 방사용액들을 각각 방사하는 노즐들이 서로 동일한 비율 또는 상이한 비율로 일정한 반복단위에 따라 규칙적으로 배열되어 있거나 무질서하게 배열되어 있고, [ⅱ]방사액 주탱크(1)가 2개 이상이고, [ⅲ]방사액 주탱크(1)와 노즐블록(4)사이에 방사액 드롭장치(3)가 설치되어 있는 것을 특징으로 한다. 본 발명은 서로 다른 2종 이상의 방사용액을 복합하여 동시에 전기방사 할 수 있어서 부직포 및 필라멘트의 물성(특성)을 간단한 공정으로 용이하게 관리가능하며, 섬유형성효과가 극대화되어 나노섬유 및 그의 부직포를 대량 생산할 수 있다. The present invention relates to a composite electrospinning apparatus for producing fibers (nanofibers) having a thickness of nanoscale and nanofibers manufactured using the same. Electrospinning of the present invention is a spinneret main tank (1), metering pump (2), nozzle block (4), a nozzle (5) installed in the nozzle block, a collector for collecting fibers radiated from the nozzle block ( 7) and an electrospinning apparatus comprising a voltage generator 9 for applying a voltage to the nozzle block 4 and the collector 7, the nozzle block 4 is provided with two or more different spinning solutions. The nozzles each radiating are arranged at regular intervals or at random in a same repeating unit at the same ratio or at different ratios. [Ii] Two or more spinning liquid main tanks 1 are provided. It is characterized in that the spinning solution drop device 3 is installed between the tank 1 and the nozzle block 4. The present invention is capable of complex electrospinning of two or more different spinning solutions at the same time, so that the physical properties (characteristics) of the nonwoven fabric and the filament can be easily managed by a simple process, and the fiber forming effect is maximized, thereby making a large amount of nanofibers and their nonwoven fabrics. Can produce. 복합 전기방사, 장치, 부직포, 나노, 복합 방사, 노즐, 드롭렛, 물성관리. Composite electrospinning, devices, nonwovens, nano, composite spinning, nozzles, ...

process and system for improved blow molding.

Spinning pack for wet spinning bicomponent filaments

A spinning pack for wet spinning a tow having at least 20,000 bicomponent acrylic filaments is described. The pack includes a plurality of specially designed plates arranged so as to provide filaments having a substantially uniform distribution of the components along the entire length of each filament and from filament to filament.

防止纺丝原液输送管结皮的方法

本发明涉及一种防止纺丝纺丝原液输送管结皮的方法，主要解决现有技术中聚合物纺丝原液输送管清洗后结皮的问题。本发明采用含有二甲基亚枫、二甲基甲酰胺、二甲基乙酰胺中的至少一种溶剂冲入至纺丝原液输送管中，控制纺丝原液输送管中的溶剂体积占输送管体积的20～95%；在纺丝原液输送管中冲入载气，控制其绝对压力为100～1000KPa；纺丝原液输送管道再次使用前将其中的载气和溶剂排出的技术方案，较好的解决了该问题，可用于纺丝原液输送管清洗结束至管道再次使用的工业生产中。

Aromatic polyamide filament and method of manufacturing the same

본 발명은 전방향족 폴리아미드 필라멘트 및 그의 제조방법에 관한 것으로서, 전방향족 폴리아미드 중합체를 제조시에 내측 통로(11a)와 이에 인접하는 외측 통로(11b)들이 교호로 반복되는 다중관 형태의 모노머 및 중합용매 공급관(11)을 사용하여 상기의 내측 통로(11a) 및 외측 통로(11b) 각각을 통해 방향족 디에시드클로라이드(A) 및 방향족 디아민이 용해되어 있는 중합용매(B) 중에서 선택된 1종을 교호로 중합용 반응기(20) 내에 공급하는 것을 특징으로 한다. The present invention relates to a wholly aromatic polyamide filament and a method for producing the same, wherein the monomer in the form of a multi-tube in which the inner passage 11a and the outer passage 11b adjacent thereto are alternately repeated when the wholly aromatic polyamide polymer is prepared; One selected from the polymerization solvent (B) in which the aromatic dieside chloride (A) and the aromatic diamine are dissolved through each of the inner passage 11a and the outer passage 11b using the polymerization solvent supply pipe 11 is alternated. It is characterized in that the feed into the reactor 20 for polymerization. 본 발명은 모노머 들이 중합용 반응기(20) 내에 투입되는 즉시 서로 잘 혼합 및 반응되기 때문에 중합용 반응기(20) 내의 전 영역에서 중합 반응이 균일하게 진행되어 중합체의 중합도 편차가 감소 된다. 그로 인해 본 발명으로 제조된 전방향족 폴리아미드 필라멘트는 분자량분포(PDI)가 좁고, 결정크기(ACS)가 커서 보다 향상된 강도 및 탄성률 등의 물성을 나타낸다. In the present invention, since the monomers are mixed and reacted with each other as soon as they are introduced into the polymerization reactor 20, the polymerization reaction proceeds uniformly in all regions in the polymerization reactor 20, thereby reducing the variation in the degree of polymerization of the polymer. Therefore, the wholly aromatic polyamide filament produced by the present invention has a narrow molecular weight distribution (PDI) and a large crystal size (ACS), thereby exhibiting properties such as improved strength and elastic modulus. 전방향족 폴리아미드, 필라멘트, 중합체, 중합반응, 2중관, 중합도 편차, 강도, 탄성률. Wholly aromatic polyamides, filaments, polymers, polymerizations, double tubes, degree of polymerization, strength, elastic modulus.

Method for producing high-strength polyethylene fiber