EP1354081B1 - Spinnvorrichtung zur herstellung von hohlfasern - Google Patents

Spinnvorrichtung zur herstellung von hohlfasern Download PDF

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Publication number
EP1354081B1
EP1354081B1 EP01271052A EP01271052A EP1354081B1 EP 1354081 B1 EP1354081 B1 EP 1354081B1 EP 01271052 A EP01271052 A EP 01271052A EP 01271052 A EP01271052 A EP 01271052A EP 1354081 B1 EP1354081 B1 EP 1354081B1
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EP
European Patent Office
Prior art keywords
spinnerette
forming material
passage
assembly
needle
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Expired - Lifetime
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EP01271052A
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English (en)
French (fr)
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EP1354081A1 (de
Inventor
Samuel Earl Moore
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LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Priority claimed from US09/733,304 external-priority patent/US6799960B2/en
Priority claimed from US09/733,303 external-priority patent/US6746226B2/en
Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP1354081A1 publication Critical patent/EP1354081A1/de
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
    • D01D5/30—Conjugate filaments; Spinnerette packs therefor
    • D01D5/34—Core-skin structure; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor

Definitions

  • This invention relates to spinnerette assemblies for forming hollow fibers. It particularly relates to an improved spinnerette for more efficient and precise production of multi-component hollow fibers.
  • hollow fibers are used in carpets, as fill materials for pillows, as insulation materials for blankets and garments, and as membranes for gas separation, blood dialysis, purification of water, and other filtering applications.
  • the hollow fibers may be composed of a single component or a plurality of components, such as a hollow structured core with a sheath disposed around the core acting as a separating layer.
  • the fibers can be bundled together and disposed in a tubular housing to provide a separation device known as a permeator.
  • the hollow fibers are relatively small, having a diameter on the order of 30 to 1000 micrometers. Accordingly, the apparatus and method for manufacturing hollow fibers must be very precise to be able to control the diameter of the fiber, and the concentricity of the core and sheath around the bore.
  • Numerous spinning assemblies have been devised for the production of single-component hollow fibers and multi-component hollow fibers of the sheath/core type. Particularly, devices have been proposed for ensuring uniform supply of the fiber-forming fluid or fluids to the orifices of a spinnerette with the object of producing hollow fibers uniform in diameter, composition, and concentricity.
  • These spinnerettes use a means for supplying a fluid positioned in the spinning orifice for forming the bore of the hollow fiber.
  • a tube or needle is used for this purpose and a gaseous or liquid bore fluid is ejected from the tube, thus occupying the bore space while the fiber core is being extruded from the spinnerette orifice around the bore fluid.
  • the nascent fiber can be solidified by cooling in a gaseous or liquid cooling fluid.
  • the nascent fiber can be solidified by evaporation of the solvent or by contacting the fiber with a solvent-extracting liquid that results in coagulation of the polymer solution(s) to form the fiber wall.
  • a typical spinning assembly such as described in U.K. Patent No.830,441 for a multi-component fiber, comprises a front and back plate spaced apart from but facing each other so as to provide a liquid channel there between.
  • the front plate is provided with an extrusion orifice therethrough, and at least one of the plates, on the side facing the other plate, is provided with a plateau-type depression so as to constrict the liquid channel in a region surrounding the extrusion orifice entrance and, thus, cause the stream of the sheath-forming material to converge substantially radially towards the orifice entrance.
  • a tube is positioned in the orifice entrance to supply the bore fluid.
  • No.3,458,615 discloses a method for maintaining sheath/core concentricity by circumferential metering of the polymer sheath to be extruded about the polymeric core involving the creation of an annular wedged-shaped flow of sheath polymer around the axially-contained fluid stream.
  • U.S. patent 5,320,512 discloses a spinnerette that has a plurality of discrete material passages formed around the needle to deliver the polymer fluid around the needle.
  • the polymer fluid from these individual passages must converge and meld together to form a singular annular flow around the tube or needle as the polymer fluid traverses through the main polymer fluid passage. If complete melding is not attained, seams may develop down the length of the fiber at the interfaces where the individual flows did not fully converge. Therefore, it would be desirable to have a spinnerette design which would permit the production of concentric and uniform fibers without the risk of seaming.
  • U.S patent 3,081,490 discloses improvements in spinning plates for the spinning of hollow filaments from spinnable polymers.
  • U.S patent 3,630,824 discloses a monofilament of high-loading capacity and a method of making same.
  • the present invention provides an improved spinnerette for the production of hollow fibers adapted to overcome the limitations of conventional spinnerettes.
  • the novel spinnerette assemblies are thus able to consistently produce uniform dimensioned single and multi-component hollow fibers in which the fiber walls are concentric with the bore to a high degree of precision. In so doing, these spinnerette assemblies additionally reduce imperfections in hollow fibers, extend hollow-fiber production run times, reduce the time for spinnerette maintenance, simplify spinnerette fabrication.
  • This invention is especially well suited to produce high quality multi-component fibers having one or more sheath layers in an efficient manner.
  • a first aspect of the invention is a spinnerette assembly for forming hollow fibers comprising at least one extrusion orifice formed in said spinnerette assembly; a hollow needle extending through each said extrusion orifice in a concentric manner to define an annular passage around said needle in said extrusion orifice; a bore forming fluid passage communicating with the interior of each said needle; at least one core forming material passage formed in said spinnerette assembly, wherein each said core forming material passage comprises a core forming material inlet port extending from a surface of said assembly to an interior of said assembly and at least one transverse passage extending from said core forming material port to each said annular passage.
  • the novel spinnerette assembly can be adapted to provide composite hollow fibers having an open bore defined by a tubular inner core fiber wall radially outwardly surrounded by a tubular sheath layer.
  • the adaptation calls for adding to the spinnerette assembly described immediately above a first sheath forming material passage which comprises a first sheath forming material port at a surface of said spinnerette assembly, the first sheath forming material passage extending to each said annular passage.
  • An example of a method for forming a hollow fiber is a method comprising the steps of:
  • the hollow fiber is an open ended, cylindrical tube, the wall of which has a homogeneous composition.
  • Such form of hollow fiber is sometimes referred to as a "single component” fiber.
  • the central opening defining the hollow portion of the fiber is occasionally referred to as the "bore”.
  • “Multicomponent” hollow fibers also can be made.
  • the term “multicomponent” means that the wall of the hollow fiber tube is formed of composition layers. The inner most layer, adjacent the bore is referred to herein as the "core" portion of the fiber.
  • the outer layers surrounding the core layer of a multicomponent fiber are referred to as "sheath" portions.
  • first sheath layer radially outward adjacent to the core layer
  • second sheath layer radially outward adjacent to the core layer
  • third sheath layers or portions.
  • wall portion of a single component hollow fiber is referred to herein as the core of the fiber even though the single component fiber has no sheath portion.
  • a spinnerette assembly 100 comprises a spinnerette body 110, bottom plate 120, and needles 130.
  • the specific arrangement shown in Figure 1A is for simultaneous extrusion of twelve hollow fibers, but the spinnerette assembly 100 can be modified to produce a single filament or any number of multiple filaments as may be required.
  • a proximal end of each needle 130 is secured in a respective needle mounting hole 111 formed in spinnerette body 110 by drilling or another machining process.
  • the outer diameter of the proximal end of needle 130 and the diameter of mounting hole 111 preferably are sized such that the proximal end of needle 130 can be pressure fitted into needle mounting hole 111 to secure needle 130 to spinnerette body 110 in a leak free manner.
  • Needle 130 can be secured to spinnerette body 110 in any appropriate manner that permits access of the bore at the proximal end of needle 130 to the bore forming fluid passages 112 in the spinnerette body 110.
  • Bottom plate 120 is secured to spinnerette body 110 by fasteners 131, such as bolts or the like threaded through holes 132. Flared recesses 156 are formed in bottom plate 120 to permit the multiplicity of extruded fibers to exit spinnerette assembly 100 without interference.
  • the multiple extrusion arrangements are situated in a linear or circular fashion.
  • Bore forming fluid passage 112 is formed in spinnerette body 110 and extends through spinnerette body 110 to a respective needle mounting hole 111 to be in communication with the passage formed through needle 130.
  • Each bore forming fluid passage 112 includes a bore forming fluid inlet port 113 at the surface of spinnerette body 110. This structure permits a bore forming fluid to be introduced into an extruded fiber to maintain the hollow structure of the extruded fiber in the manner described below.
  • Core forming material passages 150 are formed in spinnerette body 110 through which a core forming material, such as a polymer material, is delivered to the extrusion orifices 155.
  • Each core forming material passage 150 includes an inlet port 151 that is a hole extending in a direction that is substantially parallel to needle 130.
  • Each core forming material passage 150 also includes a transverse passage 152 that extends from core forming inlet port 151 to a top portion of annular passage 153 that defines the upper portion of extrusion orifice 155.
  • Transverse passage 152 is defined by a backcut portion formed in spinnerette body 110 by a tool inserted through core forming material port 151.
  • Transverse passage 152 extends entirely around needle 130 to permit core forming material to be evenly distributed around needle 130 and evenly introduced into annular passages 153 and 154.
  • FIG. 1 and 2 Another preferred embodiment of the novel spinnerette assembly adapted to produce multiple multicomponent hollow fibers can be understood with reference to Figs. 1 and 2 . Like parts of different drawing figures are numbered identically.
  • Channels 144 and 145 formed in the bottom surface of spinnerette body 110 are in communication with gap 141 defined between spinnerette body 110 and bottom plate 120.
  • Shim 140 disposed between spinnerette body 110 and bottom plate 120 defines the dimension of gap 141 that provides uniform delivery of the sheath forming material around the core forming material in a concentric fashion as the core forming material flows through annular passages 153 and 154 respectively.
  • Sheath forming material inlet port 142 and sheath forming material passage 143 are formed in spinnerette body 110 to be in communication with channels 144 to permit sheath forming material to be delivered through sheath forming material inlet port 142 and sheath forming material passage 143, through channels 144 and 145, and through gap 141. As sheath forming material exits gap 141, it is distributed evenly around core forming material at the intersection of gap 141 and annular 25 passage 154.
  • spinnerette assembly 100 is mounted to a spinning machine through mounting holes 115 using an appropriate fastening mechanism such as bolts or the like.
  • a bore forming fluid supply, a core forming material supply, and a sheath forming material supply of the machine are coupled respectively to the bore forming fluid inlet port 113, the core forming material inlet port 151, and the sheath forming material inlet port 142.
  • a core forming material, a sheath forming material, and a bore forming fluid are simultaneously delivered into spinnerette 100 at known pressures and flow rates to extrude (i.e., spin) hollow fibers.
  • the core forming material is injected at about 300-500 psig
  • the sheath forming material is injected at about 150-300 psig
  • the bore forming fluid is injected at about 4-5 psig.
  • Core forming material travels through core forming material inlet port 151, through the core forming material passage 150, into transverse passage 152, and into upper annular passage 153. At the same time, sheath forming material travels through sheath forming material inlet port 142, through sheath forming material passage 143, and into channel 144. It should be noted that the dimensions of channel 144 are designed to provide sheath forming material at the entrance to each channel 145 at essentially the same pressure so as to provide uniform delivery of sheath forming material through gap 141.
  • the flow of sheath forming material circumferentially intersects with the flow of core forming material at the gap between the upper and lower annular passages 153 and 154 respectively, thus forming a uniform layer or coating of sheath forming material concentrically around the outer surface of the core forming material.
  • a bore forming fluid is injected into the bore forming fluid inlet port 113, through bore forming fluid passage 112, and into needle 130. The bore fluid emerges from the distal end of needle 130 at a position within or just downstream of extrusion orifice 155.
  • the resultant extrudate is a fiber comprised of a bore forming fluid at the center, concentrically surrounded by a core forming material that is concentrically coated with a sheath forming material.
  • transverse passage 152 is a backcut portion having a terminal portion that entirely surrounds needle 130 in a continuous manner and is in communication with upper annular passage 153.
  • This construction eliminates the problem of uniform distribution of core forming material around needle 130. It also eliminates the problem of longitudinal seaming down the fiber wall due to incomplete melding of a plurality of core forming material streams within the annular passage as disclosed in U.S. patent 5,320,512 . Also, since the core forming material passage 150 and transverse passage 152 are readily accessible when the spinnerette assembly is removed from the spinning machine, cleaning of the spinnerette is relatively easy. This facilitates cleaning and reduces turnaround time for the spinnerette.
  • core forming material passage 150 can be easily machined in spinnerette body 110 by drilling, and transverse passage 152 can be easily and precisely formed by electrodischarge machining (also known as "EDM”) techniques using an angular electrode.
  • EDM electrodischarge machining
  • Spinnerette assembly 100 of the preferred embodiment has fewer parts and is more easily manufactured as compared to conventional spinnerettes.
  • Figure 3 illustrates an alternative construction of the spinnerette body of the first preferred embodiment that further simplifies the spinnerette manufacturing process.
  • bore forming fluid passage 112 must be machined, e.g. drilled, at an angle and with a high degree of precision to accurately meet and communicate with needle mounting hole 111 without damaging the integrity of needle mounting hole 111, which has a relatively small diameter.
  • the spinnerette body of Figure 3 has an alternative design that obviates this intricate machining step and thus reduces the cost of manufacturing a spinnerette.
  • a secondary bore forming fluid passage 114 is machined substantially parallel to core forming material passage 150 and extends from the surface of spinnerette body 110 to needle mounting hole 111, and is concentric with needle mounting hole 111. Since secondary bore forming fluid passage 114 is coaxial with needle mounting hole 111, the machining process is greatly simplified. Bore forming fluid passage 112' is machined in spinnerette body 110 50 as to originate at bore forming fluid inlet port 113 and intersect with secondary bore forming fluid passage 114 at a point substantially removed from needle mounting hole 111.
  • Angled bore forming fluid passage 112' is readily machined to communicate with secondary bore forming fluid passage 114 (that can be machined prior to machining angled passage 112') because the diameters of angled passage 112' and passage 114 are relatively large as compared to the diameter of needle mounting hole 111.
  • the opening of secondary bore forming fluid passage 114 at the face of spinnerette body 110 can be plugged or otherwise sealed prior to or during mounting of the spinnerette assembly 100 onto the spinning machine to avoid leakage of the bore forming fluid.
  • Other aspects of the alternative design of Figure 3 are similar to the design of Figure 2 described above.
  • Figure 4 depicts a method for increasing the number of fibers per spinnerette by a factor of two.
  • the numeration used in Figure 4 is 100 greater than for corresponding components in Figures 1 , 2 , and 3 .
  • Figure 4 is a top view of spinnerette body 210. The distinguishing feature between this embodiment and the one depicted in Figures 1 , 2 , and 3 is that for each core forming material passage 250 are formed two transverse passages 252a and 252b, each in the form of a backcut portion.
  • Each traverse passage 252a and 252 b are provided with an annular passage 253a and 253b respectively (corresponding to annular passage 153 in Figures 2 and 3 ), and needles 230a and 230b (corresponding to needles 130 in Figures 2 and 3 ).
  • other features in spinnerette body 110 and bottom plate 120 depicted in Figures 1 , 2 , and 3 are provided as corresponding features in spinnerette body 210 and bottom plate 220.
  • the transverse passages 252a and 252b extend from core forming material passage 250 to the edge of the annular passages 253a and 253b around each needle 230a and 230b of the corresponding extrusion orifice.
  • Plural needles 230a and 230b are disposed in spinnerette body 210 and are in communication with bore forming fluid passage 214a and 214b. Each needle extends through a corresponding extrusion orifice 255a and 255b defined by the cylindrical upper and lower annular passages 253a and 253b, and 254a and 254b respectively. Channels 244 and 245 formed in the bottom surface of spinnerette body 210 are in communication with gap 241 a and 241 b defined between spinnerette body 210 and bottom plate 220.
  • Shim 240 disposed between spinnerette body 210 and bottom plate 220 defines the dimension of gap 241 that provides uniform delivery of the sheath forming material around the core forming material in a concentric fashion at the intersection of gaps 241 a and 241 b and annular passages 254a and 254b respectively.
  • Sheath forming material inlet port 242 and sheath forming material passage 243 are formed in spinnerette body 210 to be in communication with channels 244 to permit sheath forming material to be delivered through sheath forming material inlet port 242 and sheath forming material passage 243, through channels 244 and 245, and through gaps 241 a and 241 b.
  • the bore forming fluid is supplied to spinnerette body 210 through bore forming fluid inlet port 213.
  • the bore forming fluid is distributed from each bore forming fluid inlet port 213 through channels 212'a and 212'b to each bore forming fluid passages 214a and 214b. Accordingly, the spinnerette assembly 200 can be attached to the same spinning machine to produce twice as many fibers.
  • One skilled in ?he art can envision additional embodiments to spin fibers in multiples greater than two (e.g., 3, 4, 5) based on the above embodiments.
  • Figure 5 illustrates a third preferred embodiment of the invention adapted to make hollow fibers of three components.
  • the numeration used in Figure 5 for corresponding components in Figures 1 , 2 , and 3 is 200 greater than that in Figures 1 , 2 , and 3 .
  • Spinnerette assembly 300 comprises spinnerette body 310, bottom plate 320, plural needles 330 (one of which is visible in Figure 5 ), and middle plate 360 disposed between spinnerette body 310 and bottom plate 320.
  • Shim 340a is disposed between spinnerette body 310 and middle plate 360
  • shim 340b is disposed between middle plate 360 and bottom plate 320.
  • Spinnerette body 310, middle plate 360, bottom plate 320, and shims 340a and 340b are assembled into a unitary body during use as described in detail below.
  • a proximal end of each needle 330 is secured, e.g., by a pressure fit, in a respective needle mounting hole 311 formed in spinnerette body 310 by drilling or another machining process.
  • Bottom plate 320 and middle plate 360 are secured to spinnerette body 310 by fasteners 331, such as bolts or the like threaded through holes 332, with shim 340a defining a gap 341 a.
  • shim 340b defines a gap 341 b between middle plate 360 and bottom plate 320.
  • Apertures corresponding to annular passages 353, 363, and 354 are formed in spinnerette body, middle plate, and bottom plate respectively through which a core forming material, a core material plus a first sheath forming material, and a core forming material plus a first and second sheath forming material are extruded respectively.
  • This nascent three-component hollow-fiber ultimately exits the spinnerette assembly through extrusion orifice 355.
  • Flared recesses 356 are formed in a bottom surface of the bottom plate 320 to permit each extruded fiber to exit spinnerette assembly 300 without interference for further processing by a spinning machine on which spinnerette assembly 300 is mounted.
  • Channels 344a and 345a are formed in a bottom surface of spinnerette body 310, and are in communication with gap 341 a.
  • Channels 344b and 345b are formed in a top surface of bottom plate 320, and are in communication with gap 341 b.
  • Core forming material passages 350 are formed in spinnerette body 310 through which a core forming material, such as a polymer material, is introduced into each extrusion orifice.
  • Each core forming material passage 350 includes core forming material inlet port 351 which is a hole extending in a direction that is substantially parallel to the extrusion orifice.
  • Each core forming material passage 350 also includes transverse passage 352 which extends from core forming material inlet port 351 to a top portion of annular passage 353 which defines an upper portion of the extrusion orifice.
  • Transverse passage 352 is defined by a backcut portion formed in spinnerette body 310 by a tool inserted through core forming material inlet port 350 and extends entirely around needle 330 to permit the core forming material to be evenly introduced into annular passage 353.
  • Bore forming fluid inlet port 313 and bore forming fluid passages 312 and 314 are formed in spinnerette body 310 to be in open communication with needle mounting hole 311. This arrangement permits a bore forming fluid to be introduced into an extruded fiber to maintain the hollow structure of the extruded fiber in the manner described below.
  • a first sheath forming material inlet port 342a is formed in spinnerette body 310 to be in communication with channels 344a to permit a first sheath forming material, such as a polymer material, to be introduced into the first sheath forming material inlet port 342a, through first sheath forming material passage 343a, into channels 344a and 345a, through gap 341 a, and into annular passage 363.
  • a first sheath forming material such as a polymer material
  • a second sheath forming material inlet port 342b is formed in bottom plate 320 to be in communication with channel 344b to permit a second sheath forming material, such as a polymer material, to be introduced into the second sheath forming material inlet port 342b, through second sheath forming material passage 343b, into channels 344b and 345b, through gap 341 b, and into annular passage 354.
  • a second sheath forming material such as a polymer material
  • the second sheath forming material travels through second sheath forming material inlet port 342b, through second sheath forming material passage 343b, into channels 344b and 345b, through gap 341 b, and into annular passage 354.
  • second sheath forming material enters annular passage 354, it is deposited uniformly around the material flowing from annular passage 363 (e.g., core forming material coated with first sheath forming material) into annular passage 354. Accordingly, a hollow fiber having a core, a first sheath deposited uniformly on the core, and a second sheath deposited uniformly on the first sheath plus core, all in a concentric manner, is formed.
  • the various ports, channels, and passages in the spinnerette assemblies described above can be formed in any manner and can be of any number to produce fibers having plural sheaths and core.
  • the core forming material passage can be of any shape or configuration and can comprise plural channels or a single channel.
  • the spinnerette assemblies can be machined using any known techniques such as drilling, electronic discharge machining (EDM), or any other suitable process or processes. There can be any number of extrusion orifices.
  • the invention can be used to make hollow fibers of any type and of any material amenable to extrusion. The various angles and dimensions can be varied to suit the particular application.
  • the spinnerette assemblies can be manufactured of any suitable material such as steel, monel, titanium, aluminum, or alloys thereof.
  • the core forming material and the sheath forming material(s) can be of any type amenable to extrusion such as polymer melts or solutions, ceramic pastes, and the like.
  • the bore forming fluid can be an inert gas or liquid for example

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  • Textile Engineering (AREA)
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Claims (13)

  1. Spinndüsenanordnung zur Herstellung einer oder mehrerer Hohlfasern, umfassend:
    - mindestens eine Extrusionsdüse, die in der Spinndüsenanordnung ausgebildet ist;
    - eine Hohlnadel, die sich auf konzentrische Weise durch jede Extrusionsdüse erstreckt, um einen ringförmigen Durchgang um die Nadel herum in der Extrusionsdüse zu definieren;
    - eine Bohrung, die einen Fluiddurchgang bildet, der mit dem Innenraum jeder Nadel in Verbindung steht;
    - mindestens ein Kernbildungsmaterialdurchgang, der in der Spinndüsenanordnung ausgebildet ist;
    dadurch gekennzeichnet, dass die Spinndüsenanordnung Folgendes umfasst:
    - einen ersten Mantelbildungsmaterialdurchgang, der eine erste Mantelbildungsmaterialöffnung an der Oberfläche der Spinndüsenanordnung umfasst, wobei sich der erste Mantelbildungsmaterialdurchgang zu jedem ringförmigen Durchgang erstreckt;
    - einen als eine Einheit ausgebildeten Spinndüsenkörper, eine durch eine erste Unterlegscheibe von dem Spinndüsenkörper getrennte erste Platte, die dazu angeordnet und ausgeführt ist, einen ersten Spalt zwischen dem Spinndüsenkörper und der ersten Platte zu bilden;
    - eine zweite Platte, die auf einer Seite der ersten Platte gegenüber dem Spinndüsenkörper positioniert ist, und eine zweite Unterlegscheibe, die zwischen der ersten und der zweiten Platte angeordnet und dazu ausgeführt ist, einen zweiten Spalt zwischen der ersten Platte und der zweiten Platte zu bilden, und
    wobei jeder Kernbildungsmaterialdurchgang eine Kernbildungsmaterialeinlassöffnung, die sich von einer Oberfläche der Anordnung zu einem Innenraum der Anordnung erstreckt, und mindestens eine Queröffnung, die sich von der Kernbildungsmaterialöffnung zu jedem ringförmigen Durchgang erstreckt, umfasst.
  2. Spinndüsenanordnung nach Anspruch 1, die weiterhin einen zweiten Mantelbildungsmaterialdurchgang umfasst, der eine zweite Mantelbildungsmaterialöffnung an einer Oberfläche der Spinndüsenanordnung umfasst, wobei sich der zweite Mantelbildungsmaterialdurchgang zu jedem ringförmigen Durchgang erstreckt.
  3. Spinndüsenanordnung nach einem der vorhergehenden Ansprüche, wobei der Querdurchgang ein hinterschnittener Teil des Kernbildungsmaterialdurchgangs ist, der die Nadel durchgehend vollständig umgibt und mit der Extrusionsdüse verbunden ist.
  4. Spinndüsenanordnung nach Anspruch 3, wobei sich die Kernbildungsmaterialöffnung im Wesentlichen parallel zu der Extrusionsdüse erstreckt und sich der Querdurchgang im Wesentlichen senkrecht zu der Kernbildungsmaterialöffnung erstreckt.
  5. Spinndüsenanordnung nach Anspruch 1, die weiterhin einen Spinndüsenkörper, eine erste Platte umfasst, die durch eine erste Unterlegscheibe von dem Spinndüsenkörper getrennt ist, welche dazu angeordnet und ausgeführt ist, einen ersten Spalt zwischen dem Spinndüsenkörper und der ersten Platte zu bilden.
  6. Spinndüsenanordnung nach Anspruch 1 oder 5, wobei sich die Extrusionsdüse durch Teile des Spinndüsenkörpers und der ersten Platte erstreckt.
  7. Spinndüsenanordnung nach Anspruch 1 oder 5, wobei der erste Spalt einen Teil des ersten Mantelbildungsmaterialdurchgangs definiert.
  8. Spinndüsenanordnung nach Anspruch 1, wobei sich die Extrusionsdüse durch Teile des Spinndüsenkörpers, der ersten Platte und der zweiten Platte erstreckt.
  9. Spinndüsenanordnung nach Anspruch 8, wobei der zweite Spalt einen Teil des zweiten Mantelbildungsmaterialdurchgangs definiert.
  10. Spinndüsenanordnung nach Anspruch 1 oder 5, die weiterhin mindestens eine Nadel umfasst, die in einem Nadelmontageloch befestigt ist, das in dem Spinndüsenkörper ausgebildet ist und somit einen Teil jeder Nadel aufnimmt.
  11. Spinndüsenanordnung nach Anspruch 10, wobei jedes Nadelmontageloch über einen Bohrungsbildungsfluiddurchgang mit einer Bohrungsbildungsfluideinlassöffnung an einer Oberfläche des Spinndüsenkörpers verbunden ist.
  12. Spinndüsenanordnung nach Anspruch 11, wobei der Bohrungsbildungsfluiddurchgang eine erste Bohrungsbildungsfluidleitung, die koaxial zu der Nadel verläuft und mit der Nadel in Verbindung steht, und eine zweite Bohrungsbildungsfluidleitung, die in einem Winkel zu der ersten Bohrungsbildungsfluidleitung ausgerichtet ist und sich von der ersten Bohrungsbildungsfluidleitung zu einer Oberfläche des Spinndüsenkörpers erstreckt, umfasst.
  13. Spinndüsenanordnung nach Anspruch 1, 2 oder 5, wobei sich mehrere Querdurchgänge von jeder Kernbildungsmaterialöffnung erstrecken.
EP01271052A 2000-12-08 2001-12-06 Spinnvorrichtung zur herstellung von hohlfasern Expired - Lifetime EP1354081B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US733303 1985-05-10
US09/733,304 US6799960B2 (en) 2000-12-08 2000-12-08 Spinnerette assembly for forming hollow fibers
US733304 2000-12-08
US09/733,303 US6746226B2 (en) 2000-12-08 2000-12-08 Spinnerette assembly for forming multicomponent hollow fibers
PCT/US2001/047921 WO2002066715A1 (en) 2000-12-08 2001-12-06 Spinnerette assembly for forming hollow fibers

Publications (2)

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EP1354081A1 EP1354081A1 (de) 2003-10-22
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US7238423B2 (en) 2004-12-20 2007-07-03 Kimberly-Clark Worldwide, Inc. Multicomponent fiber including elastic elements
CN102021668B (zh) * 2011-01-13 2012-04-18 南通大学 用于中空纤维纺丝的嵌针式喷丝头
CN204690180U (zh) * 2015-03-20 2015-10-07 上海湛信精密机械有限公司 一种新型模块式多孔中空纤维膜喷丝头
CN104762672A (zh) * 2015-04-23 2015-07-08 宁波斯宾拿建嵘精密机械有限公司 一种喷丝头
CN106521654B (zh) * 2016-10-21 2019-04-12 中国科学院大连化学物理研究所 中空纤维膜纺丝喷头及制备中空纤维膜的方法
CN112676565B (zh) * 2020-12-17 2021-09-07 苏州市吴中喷丝板有限公司 一种超硬金属陶瓷材料超细喷丝板生产方法
CN113718357B (zh) * 2021-09-08 2022-11-22 清华大学 一种纤维成型装置

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BE571497A (de) * 1957-11-16
DE1760467A1 (de) * 1968-05-22 1972-06-08 Barmag Barmer Maschf Technischer Draht aus thermoplastischem Kunststoff
JPS5891805A (ja) * 1981-11-25 1983-05-31 Teijin Ltd 紡糸口金装置
FR2641710B1 (fr) * 1988-12-22 1991-03-29 Lyonnaise Eaux Filiere pour la realisation de membranes en un materiau organique comportant au moins un canal longitudinal
CN2119430U (zh) * 1992-05-02 1992-10-21 中国纺织大学 可调式中空纤维膜喷丝头
US5320512A (en) * 1992-09-24 1994-06-14 E. I. Du Pont De Nemours And Company Apparatus for spinning multicomponent hollow fibers
CN1059477C (zh) * 1996-07-24 2000-12-13 天津纺织工学院膜天膜技术工程公司 中空膜用插入管式纺丝喷头及其组装调整方法

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CN1535332A (zh) 2004-10-06
DE60138306D1 (de) 2009-05-20
JP4001819B2 (ja) 2007-10-31
CN1300391C (zh) 2007-02-14
WO2002066715A1 (en) 2002-08-29
ATE428008T1 (de) 2009-04-15
JP2004518832A (ja) 2004-06-24
TW580526B (en) 2004-03-21
EP1354081A1 (de) 2003-10-22

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