Abstract: An additive manufacturing system has a plurality of manifolds in an extruder. Each manifold is connected to at least one nozzle of the extruder so the at least one nozzle extrudes thermoplastic material through a corresponding aperture in a faceplate mounted to the extruder. A plurality of valves is configured between each manifold and each nozzle connected to the manifold so the nozzles connected to a manifold extrude thermoplastic material from the manifold selectively. The faceplate is also configured for rotation about an axis perpendicular to the faceplate so different orientations of the nozzles and the apertures of the faceplate can be obtained. The different manifolds of the extruder enable a plurality of thermoplastic materials having different properties to be extruded simultaneously so the materials can join to one another while the materials are at an elevated temperature.

Abstract: A film having first segments and second segments arranged across the film's width direction is disclosed. The first and second segments are separated from each other by polymer interfaces. The first segments include a first polymeric composition and the second segments include a second polymeric composition. At least some of the second segments are layered second segments having first and second layers in the film's thickness direction, and one of the first or second layers includes a third polymeric composition different from the second polymeric composition. An extrusion die useful for making the film and a method for making the film using the extrusion die are also disclosed.

Abstract: An apparatus for processing a gas includes: a mounting part installed in a processing container and on which a substrate is mounted; a first gas flow path where a first gas is supplied from a first gas supply mechanism to an upstream portion of the first gas flow path, and a downstream portion of the first gas flow path is branched to form first branch paths; a second gas flow path where a second gas is supplied from a second gas supply mechanism to an upstream portion of the second gas flow path, and a downstream portion of the second gas flow path is branched to form second branch paths; an annular mixing chamber to which a discharge path is connected; and a gas discharge part discharging a mixture gas.

Abstract: A novel lithium battery cathode, a lithium ion battery using the same and processes and preparation thereof are disclosed. The battery cathode is formed by force spinning. Fiber spinning allows for the formation of core-shell materials using material chemistries that would be incompatible with prior spinning techniques. A fiber spinning apparatus for forming a coated fiber and a method of forming a coated fiber are also disclosed.

Abstract: An ultrafine fiber comprises a ceramic-based fibrous body and a biologically active substance encapsulated in the body, substantially encapsulated in the body, or surface-attached to the body. In an example, an ultrafine fiber comprises a core comprising a biologically active substance and a ceramic-based shell surrounding or substantially surrounding the core.

Abstract: An apparatus for forming a polycomponent fibre having a first, fibre forming component comprising a polymer, and a second, component comprising an active ingredient that will selectively reduce or remove components of tobacco smoke. The apparatus has a first reservoir for containing the first component, and a second reservoir for containing the dispersion, second solution or liquid. The dispersion, second solution or liquid includes the second component. The apparatus also has a polycomponent spinnerette adapted to coextrude the first component and the second component to form the polycomponent fibre. The apparatus also includes a first conduit for connecting the first reservoir to the spinnerette, and a second conduit for connecting the second reservoir to the spinnerette.

Abstract: Multiple extrusion drive motors are nested in an overlapping configuration that permits re-use of the drive axes to support drive gears and complementary guide bearings, resulting in a compact arrangement of independently controllable extruders for multiple build materials.

Abstract: 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.

Abstract: A method of manufacturing a hollow fiber spinning nozzle in which supply bores and a nozzle structure connected to these and having a mass discharge opening and a needle with a coagulation agent bore are formed in a base body. At least two plate-shaped bodies structured by means of micro-structure technology are joined together to form the base body.

Abstract: A process for electroblowing a multiple layered sheet using multiple spinning beams to produce different component webs wherein the sheet doesn't stick to the forming screen and has improved web stability.

Abstract: A multi-component fiber includes a first component made of a first fiber raw material and a second component made of a second fiber raw material. The first and second components are combined by rotational spinning so as to firm a fiber body.

Abstract: A device for melt spinning multi-component fibers including at least two melt inlets for introducing separately guided melt components is presented. The device includes a feed plate having a plurality of feed channels for distributing the melt components, a distributor block associated with the feed plate, and a nozzle plate adjoining the distributor block and including a plurality of nozzle bores, wherein the distributor block has several thin distributor plates stacked on top of each other and each have a hole pattern with multiple distribution openings. The thin distributor plates are configured inside the distributor block such that a plurality of melt channels form, which connect the feed channels of the feed plate to the nozzle bores of the nozzle plate. In order to implement high flow volumes, multiple distributor plates having identical hole patterns of the distribution openings are stacked in a tightly sealing manner inside the distributor block.

Abstract: Disclosed is a nozzle block for electrospinning which is able to simultaneously electrically spin two or more different types of polymer spinning dopes, wherein a single-layer distribution plate for dividing a planar space within the nozzle block into two or more segments is installed within the nozzle block. The apparatus is simple because a single-layer distribution plate is installed instead of a conventional multi layer distribution plate. A hybrid nano fiber laminate can be prepared without any additional laminating procedure because two or more different polymer spinning dopes can be simultaneously electrically spun through different nozzles arranged within the same nozzle block. It is possible to prepare a hybrid nano fiber nonwoven fabric or filaments or the like composed of two or more types of nano fibers different in thermal properties or physical properties because their fiber diameter or polymer type are different from each other.

Abstract: The present invention is to provide a polyvinyl chloride (PVC) fiber for artificial hair. The PVC fiber is manufactured by melt spinning a PVC resin composition with a nozzle, wherein the nozzle has a nozzle hole having a diameter D and a land length L, and a nozzle leading portion having a cone angle, and wherein a ratio of L/D is 1-3, a height of the nozzle leading portion is at least 4 mm, and the cone angle is 20°-90°. The resulting PVC fiber has an arithmetic mean roughness of 0.18-0.38 ?m and a maximum height of 0.5-3.5 ?m along a longitudinal direction, specified by JIS B 0601.

Abstract: A device for melt spinning multi-component fibers including at least two melt inlets for introducing separately guided melt components is presented. The device includes a feed plate having a plurality of feed channels for distributing the melt components, a distributor block associated with the feed plate, and a nozzle plate adjoining the distributor block and including a plurality of nozzle bores, wherein the distributor block has several thin distributor plates stacked on top of each other and each have a hole pattern with multiple distribution openings. The thin distributor plates are configured inside the distributor block such that a plurality of melt channels form, which connect the feed channels of the feed plate to the nozzle bores of the nozzle plate. In order to implement high flow volumes, multiple distributor plates having identical hole patterns of the distribution openings are stacked in a tightly sealing manner inside the distributor block.

Abstract: A spunbond system for manufacturing a non-woven web of fibers includes a spin beam assembly configured to process and deliver a plurality of polymer streams for extrusion through spinneret orifices. The spin beam assembly includes a plurality of manifold sections within the spin beam assembly, each manifold section including a distribution pipe configured to transfer a respective polymer component to a plurality of piping sections extending within the manifold section and a heat transfer medium that flows within the manifold section and around the piping sections extending into the manifold section so as to maintain the respective polymer component at a selected temperature.

Abstract: Apparatus (100, 101, 102) and die cartridge assembly (18, 44, 45, 47) adapted for use with same for producing fibrous material (212). The apparatus (100) comprises a removably attachable die cartridge assembly (18) that adapts to conventional spunmelt equipment. The die cartridge assembly (18) is removably positionable beneath an extrusion body (10) for effecting formation of fibrous material by fibrillation of polymer films. The cartridge assembly (18) includes at least one polymer passage (19) communicating with a molten polymer source (10) for directing molten polymer onto at least one film forming surface (20, 28) defined by the cartridge assembly (18), and also defines at least one gas passage (222, 22, 30) communicating with a gas source (16) for directing pressurized gas (220) against the molten polymer (210) in the form of a film for effecting formation of the fibrous material (212).

Abstract: Disclosed is a spinneret and a method of spinning. The spinneret includes a first pore configured for extruding a first component of a multi-component fiber, a second pore configured for extruding a second component of the multi-component fiber, and a thermal insulator positioned between the first pore and the second pore and configured for preventing heat from the first component from damaging the second component. The first component and the second component have incompatible thermal resistance.

Abstract: The present invention concerns a spinneret plate (1) for manufacturing a nonwoven fabric, having multiple non-round holes, which are similar to trilobal or multiarmed holes (3) in particular, for polymer flow outlet to produce filaments, in which identical holes are positioned in rows offset relative to one another. At least a first row (2) has a positional arrangement of the holes that differs from the positional arrangement of a second row (7) of rows through rotation of the holes.

Abstract: The present invention is directed to a process for forming a plurality of multi-layered filaments from multiple thermoplastic synthetic polymers and an apparatus containing a melt spinning beam which comprises multiple polymer inlet passages each communicating with separate multiple coat hanger distribution manifolds, separate filters connected downstream of each coat hanger distribution manifold, a combining manifold connected downstream of the filters and containing channels to retard polymer flow across planar molten polymer flow streams and a spinneret comprising a plurality of spinneret exit orifices connected downstream of the combining manifold for spinning of the multi-layered filaments.

Abstract: A sheath flow system having a channel with at least one fluid transporting structure located in the top and bottom surfaces situated so as to transport the sheath fluid laterally across the channel to provide sheath fluid fully surrounding the core solution. At the point of introduction into the channel, the sheath fluid and core solutions flow side by side within the channel or the core solution may be bounded on either side by the sheath fluid. The system is functional over a broad channel size range and with liquids of high or low viscosity. The design can be readily incorporated into microfluidic chips without the need for special manufacturing protocols.

Abstract: The object of the invention is to provide splittable fibers (6) which on the one hand are very stable during spinning, i.e., do not dissociate during the entire spinning process and the drawing, and on the other hand after spinning and drawing may be dissociated, essentially completely or even up to 100 percent, into segments (10, 12) or individual filaments. A further object is to keep the technical complexity and energy consumption particularly low. For this purpose, the splittable fibers (6), having at least one break point (8), comprise at least two mutually incompatible polymer components (A, B). At least one polymer component (A) has a lower weight proportion than the other polymer component(s) (B), and the polymer component(s) (A) having the lower weight proportion is situated on and/or in the at least one break point (8).

Abstract: The present invention is directed to a method and apparatus for making nanofiber webs, wherein a source of process air is utilized to affect the spray pattern and quality of fibrillated material expressed from a die assembly including a multi-fluid opening. Appropriately, the aforementioned process air is defined herein as an alternate or ancillary air source apart from primary process air, which primary air is simultaneously supplied with the molten polymeric material to the fiber forming multi-fluid opening. The ancillary air source of the invention is further distinct from secondary air, which is also known in the art as quenching air. The ancillary air can be described as a continuous fluid curtain of shielding or shaping air.

Abstract: A hollow fiber spinning nozzle in which supply bores and a nozzle structure connected to these and having a mass discharge opening and a needle with a coagulation agent bore are formed in a base body. At least two plate-shaped bodies structured by means of micro-structure technology are joined together to form the base body.

Abstract: A process and apparatus for forming nanofibers from a spinning melt utilizing a high speed rotating distribution disc. The fibers can be collected into a uniform web for selective barrier end uses. Fibers with an average fiber diameter of less that 1,000 nm can be produced.

Abstract: The present invention relates to an electrospinning apparatus for mass-production of nanofibers, particularly to an electrospinning apparatus with an electric stability and an improved nozzle blocks. The bottom-up electrospinning apparatus for the mass-production of nanofiber comprises at least one nozzle block having a plurality of spinning nozzles arranged in the horizontal and vertical direction; a collector installed over the nozzle blocks in order to correspond to the nozzle blocks and maintain a certain distance in between; a power source to apply voltage difference between the nozzle block and the collector; and a spinning solution container to supply the spinning solution to the nozzle block, wherein the nozzle block and the collector are connected to the positive terminal and the negative terminal, respectively and among a plurality of spinning nozzles arranged along the horizontal line, a spinning nozzle in the middle and a spinning nozzle in the end have different height.

Abstract: A hollow fiber spinning nozzle in which supply bores and a nozzle structure connected to these and having a mass discharge opening and a needle with a coagulation agent bore are formed in a base body. At least two plate-shaped bodies structured by means of micro-structure technology are joined together to form the base body.

Abstract: The invention provides spinnerets for making yarns made of filaments of different average diameters.

Abstract: A micromachined spinneret is disclosed which has one or more orifices through which a fiber-forming material can be extruded to form a fiber. Each orifice is surrounded by a concentric annular orifice which allows the fiber to be temporarily or permanently coated with a co-extrudable material. The micromachined spinneret can be formed by a combination of surface and bulk micromachining.

Abstract: An assembly for use in continuously forming a plurality of lengths of flexible noise attenuating cutting line for use in rotary vegetation trimmers. The assembly includes a breaker plate having a conically shaped inner portion and a planar outer portion. A plurality of extrusion dies are disposed in the outer portion wherein each die defines a die hold configuration at its lower end for the extrusion of one or more monofilament polymer strands therethrough, and a drive assembly is provided for rotating each of the dies at a predetermined speed such that upon directing a flow of molten monofilament polymer material onto the breaker plate, the material is directed from the inclined central portion onto the planar outer portion where it is extruded through the rotating dies to create a plurality of twisted strands of polymer material that upon cooling, stretching and heating, define lengths of flexible noise attenuating cutting line.

Abstract: An arrangement for forming a web of fibrous media wherein at least one formed layered portion is attenuated from a first die source selectively unto a first collector and successively combining such portion with at least another formed layered portion which is attenuated from a second die source selectively unto a second collector, at least one of the outer surfaces of the web of fibrous media being of comparatively smooth skin-like nature to minimize projecting fiber ends.

Abstract: A device and method for spinning polymer fibers utilizes one or more independent sources of polymer materials, pumps for feeding polymer material from each of the sources, and a series of distribution plates with surface grooves, through holes and/or slots together defining separated distribution paths, each of which receives polymer material from one of said independent sources. The surface grooves are defined to a depth less than the thickness of the distribution plate. At least one distribution plate contains spinneret orifices defined by outlet surface grooves extending from the distribution path to the edge of that plate, whereby fibers are extruded from the spinneret orifices edgewise from the plate. The spinneret orifices may be defined by overlayed outlet surface grooves or slots defined in abutting plates.

Abstract: A linear flow equalizer for distributing thermoplastic material to a spin pack of a meltspinning apparatus that provides for uniform apportionment of a flow of a flowable thermoplastic material at least vertically and in a cross-machine direction of the spin pack. The linear flow equalizer includes an inlet plate with multiple liquid passageways equidistantly spaced in the cross-machine direction that each provide flowable thermoplastic material to a set of equalizer plates. Elongated slots extending through alternating equalizer plates are registered with throughholes extending through adjacent plates in the equalizer plate set. Each throughhole in an upstream equalizer plate is registered with the center of a corresponding slot and each throughole in a downstream equalizer plate is registered with one of opposed closed ends of a corresponding slot.

Abstract: A web or fleece of synthetic resin strand collected on a sieve belt is discharged from the sieve belt into further processing equipment over a rerouting roller at the discharge end of the sieve belt. The rerouting roller is perforated and air or another fluid medium is passed through the belt at the rerouting roller to reduce adhesion forces between the belt and the web and lift the web from the belt without damage to the belt.

Abstract: 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.

Abstract: Device for the production of multicomponent fibers or of filaments, in particular bicomponent fibers, whereby a nozzle block assembly is provided. The assembly consists of a middle nozzle block and two outer nozzle blocks. Arranged in the nozzle block assembly are at least two inflow channels, each for a melt flow of one component. At the lower end of the nozzle block assembly is a nozzle with apertures for the outlet of the multicomponent strands. At least one inflow channel runs over at least a part of its length exclusively through an outer nozzle block.

Abstract: A die tip adapted for extruding a plurality of meltblown multicomponent filaments that includes at least two series of conduits that extend and converge in to the interior of the die tip to convey a multicomponent thermoplastic structure in to the interior of the die tip to a series of capillaries that extend to a series of die opening for extruding multicomponent filaments is provided.

Abstract: A lamellar die apparatus for extruding a heated liquid into single or multiple component filaments. The apparatus includes a plurality of plates each having opposite side faces. At least two of the side faces confront each other and have a liquid passage positioned therebetween for transferring the heated liquid. At least two of the side faces confront each other and have a heating element passage therebetween. A heating element is positioned within the heating element passage for heating at least two of the plates. An extrusion die is coupled with the plurality of plates and communicates with the liquid passage for discharging the heated liquid as multiple filaments.

Abstract: A lamellar die apparatus for extruding a heated liquid into filaments and directing air at the filaments. The apparatus includes a plurality of plates each having opposite side faces. At least two of the side faces confront each other and have a liquid passage positioned therebetween for transferring the heated liquid. At least two of the side faces confront each other and have an air passage positioned therebetween for transferring the air. At least two of the side faces confront each other and have a heating element passage therebetween. A heating element is positioned within the heating element passage for heating at least two of the plates. An extrusion die is coupled with the plurality of plates and communicates with the liquid passage and the air passage for discharging the heated liquid as multiple filaments and for discharging the air at the filaments.

Abstract: The present invention provides a series of plates for distributing a molten polymer composition, the series of plates includes at least two plates: a first plate that includes an upper surface, a lower surface, and a plurality of polymer distribution channels connecting the upper surface and the lower surface.

Abstract: An extrusion die for meltblowing molten polymers having a row of die orifices each having at least two separate polymer supply ports entering from an entrance portion of the die, each of the polymer supply ports communicating with separate rows of extrusion capillaries having exit openings at an exit portion of the die, gas supply ports entering from the entrance portion of the die and arranged laterally to the polymer supply ports, the gas supply ports communicating with gas jets extending through the die and arranged laterally to the exit openings of the extrusion capillaries, wherein the rows of extrusion capillary exit openings and the gas jets communicate with a blowing orifice in the exit portion of the die.

Abstract: The present invention is the apparatus and method for producing a plastic sheet having a pattern produced in a layer therein. The plastic sheet is a single layer sheet or a multi-layer sheet. The pattern is produced by mixing two or more plastic extrudants together in a mixer. The pattern is visible in the layer containing the two or more plastic extrudants because an at least one of the plastic extrudants is at least partially transparent. The mixer used to produce the pattern includes a housing having an end configured to expel the mixture of the two or more extrudants through a plurality of outlets. The mixer further comprises a rotatable shaft and at least one projection coupled to the shaft and rotatable with the shaft, the at least one projection configured to orient the mixture of the two or more extrudants relative to the plurality of outlets in the housing. The mixer further comprising a thrust bearing configured to couple an end of the shaft to the housing.

Abstract: An arrangement for producing a fibrous mat from a heated die source wherein the produced mat includes a first layered, preselected fiber portion of substantially straight fibers produced by directing such fibers directly to a collector source and a second layered preselected fiber portion of substantially curled fibers produced by diverting and exerting an external vertically creative curling force thereon before reaching the collector source.

Abstract: The invention is an extrusion device comprising an interleaving block portion. The interleaving block portion includes at least two first chambers, each first chamber including a width, a length, a height, and an input aperture. The length dimension of the first chambers are generally parallel. An output aperture is included in each first chamber, the output aperture is wider and shorter in height than the input aperture. A series of first distances are defined between the input aperture to points along the output aperture. A die portion is included in the extrusion device. The die portion has a laminate chamber having a height dimension. The height dimension of the laminate is disposed generally perpendicular to the length dimension of the first chambers. An output is disposed at one end of the height dimension. The laminate chamber is disposed so as to be in communication with the output apertures of the parallel first chambers.

Abstract: A device and method for spinning polymer fibers utilizes one or more independent sources of polymer materials, pumps for feeding polymer material from each of the sources, and a series of distribution plates with surface grooves, through holes and/or slots together defining separated distribution paths, each of which receives polymer material from one of said independent sources. The surface grooves are defined to a depth less than the thickness of the distribution plate. At least one distribution plate contains spinneret orifices defined by outlet surface grooves extending from the distribution path to the edge of that plate, whereby fibers are extruded from the spinneret orifices edgewise from the plate. The spinneret orifices may be defined by overlayed outlet surface grooves or slots defined in abutting plates.

Abstract: A melt spinning apparatus includes fiber producing features to produce multi-component filaments by extruding two or more single-component strands that combine after extrusion and are then attenuated by process air. The two or more liquid materials do not contact one another in the spinpack. Separation of the two types of liquid material throughout the spinpack prevents premature leakage between two liquid materials and allows for an optimized temperature for each type of liquid material for proper extrusion.

Abstract: The invention provides a spinnerette assembly for forming hollow fibers. The spinnerette assembly contains an extrusion orifice and a fiber-forming material passage in communication with the extrusion orifice. A hollow needle extends through the extrusion orifice in a concentric manner to define an annular passage surrounding the needle. The fiber-forming material passage includes a fiber-forming material inlet port extending from a surface of the spinnerette assembly to an interior of the assembly and a transverse passage extending from the fiber-forming material port to the annular passage surrounding the needle. A bore forming fluid passage communicates with the interior of the needle.

Abstract: A process for forming a multiple component meltblown fiber comprising extruding a first distinct melt-processable polymer through a first extrusion orifice, simultaneously extruding a second distinct melt-processable polymer through a second extrusion orifice, fusing said first and second melt-processable polymers into an extruded composite filament after extrusion, and pneumatically attenuating said extruded composite filament with jets of high velocity gas so as to form said multiple component meltblown fiber.

Abstract: The invention provides a spinnerette assembly for forming multicomponenthollow fibers of the sheath/core type. The spinnerette assembly contains an extrusion orifice and a core forming material passage in communication with the extrusion orifice. A hollow needle extends through the extrusion orifice in a concentric manner to define an annular passage surrounding the needle. The core forming material passage includes a core forming material inlet port extending from a surface of the spinnerette assembly to an interior of the assembly and a transverse passage extending from the core forming material port to the annular passage surrounding the needle. A bore forming fluid passage communicates with the interior of the needle. The spinnerette assembly contains at least one sheath forming material passage also in communication with the extrusion orifice.

Abstract: A system and process for producing spunbond nonwoven fabric in which two or more polymeric components are separately melted and are separately directed through a distribution plate configured so that the separate molten polymer components combine at a multiplicity of spinnerette orifices to form filaments containing the two or more polymer components. Multicomponent filaments are extruded from the spinnerette orifices into a quench chamber where quench air is directed from a first independently controllable blower and into contact with the filaments to cool and solidify the filaments. The filaments and the quench air are directed into and through a filament attenuator and the filaments are pneumatically attenuated and stretched. The filaments are directed from the attenuator into and through a filament depositing unit and are deposited randomly upon a moving continuous air-permeable belt to form a nonwoven web of substantially continuous filaments.