EP2112256A1 - Hollow fibre spinning nozzle - Google Patents
Hollow fibre spinning nozzle Download PDFInfo
- Publication number
- EP2112256A1 EP2112256A1 EP09008291A EP09008291A EP2112256A1 EP 2112256 A1 EP2112256 A1 EP 2112256A1 EP 09008291 A EP09008291 A EP 09008291A EP 09008291 A EP09008291 A EP 09008291A EP 2112256 A1 EP2112256 A1 EP 2112256A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- needle
- hollow
- fiber spinneret
- precipitant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- 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
-
- 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
- D01D4/00—Spinnerette packs; Cleaning thereof
- D01D4/02—Spinnerettes
- D01D4/022—Processes or materials for the preparation of spinnerettes
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
- Y10S425/217—Spinnerette forming conjugate, composite or hollow filaments
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49428—Gas and water specific plumbing component making
- Y10T29/49432—Nozzle making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4998—Combined manufacture including applying or shaping of fluent material
Definitions
- the invention relates to a hollow fiber spinneret according to the preamble of claim 1.
- Hollow-fiber spinnerets are already known which serve for the production of polymeric hollow-fiber membranes.
- such hollow fiber spinnerets 10 consist of a base body 12 made of metal, in which a plurality of bores 14, 16, 18, 22 are introduced.
- a tube 20 is fitted, in which a Hurllstoff- or support means channel 22 is formed for introducing the precipitant or support means.
- the holes 16 and 18 form Massezu thoroughlykanäle for a polymer, which exits via an annular channel 22, which also consists of a corresponding hole, yes.
- methods of conventional metal working are used.
- the nozzle structure by the assembly of both nozzle parts, with an inaccuracy, for example, the geometry of the annulus 22 added up from the manufacturing errors in the manufacture of the body 12 and the tube 20.
- an inaccuracy for example, the geometry of the annulus 22 added up from the manufacturing errors in the manufacture of the body 12 and the tube 20.
- mounting errors added which also contribute to an inaccuracy of Geometry can lead.
- the known in the art hollow fiber spinnerets are not arbitrarily reduced in size.
- the object of the invention is therefore to provide hollow fiber spinnerets with which even fine capillary membranes can be produced, wherein the manufacturing tolerances are minimized and the manufacturing process for these hollow fiber spinnerets is significantly cheaper.
- this object is achieved by the combination of the features of claim 1.
- a completely new design for hollow fiber spinnerets is provided because the invention avoids conventional metalworking and uses microstructure techniques.
- at least two plate-shaped bodies structured by microstructure technology are joined together to form the hollow-fiber spinneret.
- a second unstructured plate is preferably added to a first plate formed by microstructure technology, wherein the second plate is patterned only after application to the first plate.
- the plates are connected flat to each other.
- a hollow fiber spinneret consists of two plates, wherein in the first plate the Massezu Foodkanäle, a mass flow equalization zone, a precipitant / Stauerschzu Georgiabohrung and a needle stump are excluded, while in the second plate a nozzle structure with mass annular gap and a needle with a precipitant / Stauerschbohrung are excluded.
- the second plate additionally contains the MassezuGermankanäle and the mass flow homogenization zone. There omitted on the first plate these elements and the needle stump.
- a special feature of this construction is that the needle of the spinneret is connected to the first plate only at one end face.
- a hollow-fiber spinneret with which a simple capillary hollow-fiber membrane can be produced, advantageously have the following dimensions: Thickness of the first plate: 0.250 - 1.500 mm Thickness of the second plate: 0.050 - 1.500 mm Outer diameter of the needle: 0.020 - 1.500 mm Length of the needle incl.
- Needle stump 0.100 - 2.000 mm Diameter of the precipitation agent bore: 0.010 - 1.000 mm Length of precipitation agent hole: 0.150 - 2.500 mm Outer diameter of the annular gap: 0.040 - 3.000 mm Length of the annular gap: 0.050 - 1.500 mm Height of the spinneret: 0.300 - 3.000 mm Edge length of the spinneret: 1,000 - 25,00 mm.
- a further preferred embodiment of the invention consists of three plates, wherein the first plate contains feed channels, a homogenization zone and a needle stub with a central feed bore, a second plate which adjoins the first plate, feed channels, a homogenization zone and a further needle stub with a having a concentric annular channel and a needle extension having a central bore, and wherein a third plate, which in turn adjoins the second plate, a nozzle structure comprising a central bore and two concentric annular gaps.
- Capillary membranes with coextruded bilayers can be produced by means of this hollow-fiber spinneret according to the invention.
- the hollow fiber spinneret is composed of three individual plates, wherein the first plate has a central feed bore, a parallel to the first plate second feed channels and arranged on these equalization zones and a needle stub with concentric annular channel and a central bore and wherein the third plate adjoining the second plate has a nozzle structure consisting of a central bore and two concentric annular gaps.
- the outer diameter of the multi-channel hollow fiber spinneret is less than 1 mm.
- the outer diameter of the multi-channel hollow fiber spinneret is less than or equal to 0.45 mm.
- FIG. 2 a hollow fiber spinneret 10 according to a first embodiment of the invention is shown.
- the entire body 26 is composed of two individual plates 30 and 32.
- ground supply channels 34, a mass flow equalization zone 36, a precipitating agent supply bore 38 and a needle stub 40 are formed by a corresponding etching operation, which will be described later in detail.
- the three-dimensional design of here in FIG. 2 shown hollow fiber spinneret results from FIG. 4 , There it can be seen that the Massezu Foodkanäle, ie the channels for supplying the considered the considered here.
- the mass flow equalization zone 36 results as an annular space around the needle stub 40 around.
- the Kayllstoffitzzu operationsbohrung 38 is widened in its pointing to the top area, as in particular the FIG. 2 can be seen.
- monocrystalline silicon for example, has a thickness of the first plate of 0.4 mm, a thickness of the second plate of 0.1 mm, an outer diameter of the needle of 0.05 mm, a length of the needle including the needle stump of 0.15 mm Diameter of Desillatoribohrung 38 in the extended range of 0.1 mm, an outer diameter of the annular gap 42 of 0.1 mm and a length of the annular gap 42 of 0.1 mm.
- the height of the main body 26, ie the height of the entire spinneret 10, is accordingly 0.5 mm, while an edge length of the main body 26 of the spinneret 10 is 2 mm.
- hollow fiber spinnerets In the production of hollow fiber spinnerets by means of microstructure technology is assumed by 2 round wafer discs with 100 to 300 mm diameter. From these wafers, many spinneret structures are simultaneously produced. The individual hollow fiber spinnerets 10 are then obtained by dicing the finished wafers.
- the separated split spinnerets can each contain a single nozzle structure, as shown here, but also several nozzle structures in a nozzle structure composite. This is achieved by not separating all the nozzle structures that have been formed on the wafer from each other, but that a plurality of nozzle structures together form a multiple nozzle unit, which are cut along the outer contour of the wafer.
- the production of the spinnerets 10 begins with the structuring on both sides of a first wafer, which receives the elements 34, 36, 38, 40 of the plate 30 of the spinneret 10.
- the structures are fabricated by a series of standard lithography techniques, ie photoresist masks, SiO, Si-N or the like, and standard etching techniques.
- RIE reactive ion etching
- D-RIE reactive ion deep etching
- cryo-etching Particularly suitable are special deep etching methods such as D-RIE and cryo-etching.
- the lithographic masks for the front and back must be aligned visually.
- the second wafer from which the second plate is to be produced, is bonded to the correspondingly structured first wafer.
- all bonding methods can be used, anodic bonding, direct bonding or the like.
- direct bonding is suitable since the highest strengths are achieved and thus a good hold of the needle on the first plate is ensured.
- the nozzle structure 48 with annular gap 42 and precipitation agent bore 46 is produced in a two-stage etching process. In the first step, only the deeper precipitation agent hole is advanced. In the second step, both structures are then finished etched.
- the individual spinnerets are cut out of the wafer by suitable separation methods, such as wafer sawing or laser processing.
- a hollow fiber spinneret 10 for producing a hollow fiber coextruded from two layers is shown.
- a hollow fiber spinneret 10 with a base body 100 consisting of three individual plates 102, 104 and 106 is shown.
- the individual plates in turn consist of monocrystalline silicon.
- a feed channel 108 is excluded for the precipitant.
- feed channels 110, 112 for a first polymer are provided, which open into an associated homogenization zone 114.
- the equalization zone 114 surrounds a corresponding needle stump 116.
- a precipitant hole 118 is also excluded, which is surrounded by a further needle stub 120 and an annular space 122. Furthermore, further feed channels 124 with subsequent homogenization zone 126 are excluded in the second plate 104. Finally, the third plate 106 has two annular gaps 128 and 130 for the respective polymeric materials to be co-extruded, and a needle 132 with precipitant well 134. In the variants of Figs 3a, 3b and 3c the supply channels 124 are each configured differently. While in the embodiment according to the FIG. 3a the feed channel 124 for the second polymer is provided only in the second plate 104, which runs in the variant according to the FIG.
- the second polymer feed passage 124 extends through the second plate 104 and the first plate 102 as shown in FIG Figure 3c shown.
- the representation according to FIG. 5 corresponds to the section according to FIG. 3a , wherein it is clear here that 8 feed channels 112 are arranged in a star shape, while only 4 feed channels 124 are arranged in a cross shape.
- the three plates 102, 104 and 106 are in turn connected to the main body 100 by a suitable bonding method, advantageously direct bonding. Otherwise corresponds to the manufacturing method for the hollow fiber spinneret 10 according to the Figures 3 and 5 , analogous to that, as already stated by the FIG. 2 and 4 was explained in detail.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Description
Die Erfindung betrifft eine Hohlfaser-Spinndüse nach dem Oberbegriff des Anspruchs 1.The invention relates to a hollow fiber spinneret according to the preamble of claim 1.
Es sind bereits Hohlfaser-Spinndüsen bekannt, die zur Herstellung von polymeren Hohlfasermembranen dienen. Wie in der
Aufgabe der Erfindung ist es daher, Hohlfaser-Spinndüsen an die Hand zu geben, mit denen auch feine Kapillarmembranen herstellbar sind, wobei die Fertigungstoleranzen minimiert werden und das Herstellverfahren für diese Hohlfaser-Spinndüsen deutlich verbilligt wird.The object of the invention is therefore to provide hollow fiber spinnerets with which even fine capillary membranes can be produced, wherein the manufacturing tolerances are minimized and the manufacturing process for these hollow fiber spinnerets is significantly cheaper.
Erfindungsgemäß wird diese Aufgabe durch die Kombination der Merkmale des Anspruchs 1 gelöst. Somit wird eine vollständig neuartige Konstruktionsweise für Hohlfaser-Spinndüsen geschaffen, da sich die Erfindung von der konventionellen Metallbearbeitung abwendet und Verfahren der Mikrostrukturtechnik anwendet. Erfindungsgemäß werden nämlich mindestens zwei mittels Mikrostrukturtechnik strukturierte plattenförmige Körper zu der Hohlfaser-Spinndüse zusammengefügt. Dabei wird bevorzugt auf eine erste mittels Mikrostrukturtechnik gebildete Platte eine zweite unstrukturierte Platte gefügt, wobei die zweite Platte erst nach dem Aufbringen auf die erste Platte strukturiert wird. Die Platten werden flächig miteinander verbunden. Mit der neuen Fertigungsmethode eröffnet sich eine Vielzahl von Vorteilen. Zunächst lässt sich eine wesentlich kleinere Abmessung der Düsenstruktur mittels der Mikrostrukturtechnik realisieren. Darüber hinaus ist eine wesentlich höhere Präzision hinsichtlich der Düsenstruktur realisierbar. Diese Präzision kommt dadurch zustande, dass die Düsenstruktur in einem Schritt entsteht. Sie ist nur durch die Genauigkeit der zu Grunde liegenden Lithographiemaske, die bei der Mikrostrukturtechnik verwendet wird, beschränkt. Derartige Lithographiemasken lassen sich jedoch mit Toleranzen von 100 nm extrem genau fertigen. Ein weiterer Vorteil des erfindungsgemäßen Verfahrens liegt in den wesentlich geringeren Produktionskosten der Spinndüsen.According to the invention this object is achieved by the combination of the features of claim 1. Thus, a completely new design for hollow fiber spinnerets is provided because the invention avoids conventional metalworking and uses microstructure techniques. In accordance with the invention, at least two plate-shaped bodies structured by microstructure technology are joined together to form the hollow-fiber spinneret. In this case, a second unstructured plate is preferably added to a first plate formed by microstructure technology, wherein the second plate is patterned only after application to the first plate. The plates are connected flat to each other. The new manufacturing method opens up a multitude of advantages. First, a much smaller dimension of the nozzle structure can be realized by means of microstructure technology. In addition, a much higher precision with respect to the nozzle structure can be realized. This precision is achieved by creating the nozzle structure in one step. It is limited only by the accuracy of the underlying lithographic mask used in microstructure technology. However, such lithography masks can be manufactured extremely precisely with tolerances of 100 nm. Another advantage of the method according to the invention lies in the significantly lower production costs of the spinnerets.
Besondere Ausgestaltungen der Erfindung ergeben sich aus den sich an den Hauptanspruch anschließenden Unteransprüchen.Particular embodiments of the invention will become apparent from the subsequent claims to the main claim.
Grundsätzlich lassen sich natürlich für die Realisierung der Hohlfaser-Spinndüsen nach der Erfindung alle Materialien der Mikrostrukturtechnik einsetzen, sofern diese anisotrop geätzt und gebondet werden können. Besonders vorteilhaft sind aber einkristallines Silizium, Galliumarsenid (GaAs) oder Germanium einsetzbar.In principle, of course, all materials of microstructure technology can be used for the realization of the hollow-fiber spinnerets according to the invention, provided that they can be anisotropically etched and bonded. However, it is particularly advantageous to use monocrystalline silicon, gallium arsenide (GaAs) or germanium.
Gemäß einer besonderen Ausführungsform der Erfindung besteht eine Hohlfaser-Spinndüse aus zwei Platten, wobei in der ersten Platte die Massezuführkanäle, eine Massestrom-Vergleichmäßigungszone, eine Fällmittel/Stützmittelzuführbohrung und ein Nadelstumpf ausgenommen sind, während in der zweiten Plattte eine Düsenstruktur mit Masse-Ringspalt und eine Nadel mit einer Fällmittel/Stützmittelbohrung ausgenommen sind.According to a particular embodiment of the invention, a hollow fiber spinneret consists of two plates, wherein in the first plate the Massezuführkanäle, a mass flow equalization zone, a precipitant / Stützmittelzuführbohrung and a needle stump are excluded, while in the second plate a nozzle structure with mass annular gap and a needle with a precipitant / Stützmittelbohrung are excluded.
Alternativ ist auch eine Konstruktion denkbar, bei der die zweite Platte zusätzlich die Massezuführkanäle und die Massestrom-Vergleichmäßigungszone enthält. Dort entfallen auf der ersten Platte diese Elemente und der Nadelstumpf. Ein besonderes Merkmal dieser Konstruktion ist es, dass die Nadel der Spinndüse nur an einer Stirnfläche mit der erste Platte verbunden ist.Alternatively, a construction is conceivable in which the second plate additionally contains the Massezuführkanäle and the mass flow homogenization zone. There omitted on the first plate these elements and the needle stump. A special feature of this construction is that the needle of the spinneret is connected to the first plate only at one end face.
Diese bevorzugten Ausgestaltungen für eine Hohlfaser-Spinndüse, mit der eine einfache Kapillar-Hohlfasermembran herstellbar ist, weisen vorteilhaft folgende Abmessungen auf:
Eine weitere bevorzugte Ausgestaltung der Erfindung besteht aus drei Platten, wobei die erste Platte Zuführkanäle, eine Vergleichmäßigungszone und einen Nadelstumpf mit einer zentralen Zuführbohrung enthält, eine zweite Platte, die sich an die erste Platte anschließt, Zuführkanäle, eine Vergleichmäßigungszone und einen weiteren Nadelstumpf mit einem konzentrischen Ringkanal sowie eine Nadelverlängerung mit einer zentralen Bohrung aufweist, und wobei eine dritte Platte, die sich wiederum an die zweite Platte anschließt, eine Düsenstruktur bestehend aus einer zentralen Bohrung und zwei konzentrischen Ringspalten aufweist. Mittels dieser erfindungsgemäßen Hohlfaser-Spinndüse lassen sich Kapillarmembranen mit koextrudierten Doppelschichten herstellen.A further preferred embodiment of the invention consists of three plates, wherein the first plate contains feed channels, a homogenization zone and a needle stub with a central feed bore, a second plate which adjoins the first plate, feed channels, a homogenization zone and a further needle stub with a having a concentric annular channel and a needle extension having a central bore, and wherein a third plate, which in turn adjoins the second plate, a nozzle structure comprising a central bore and two concentric annular gaps. Capillary membranes with coextruded bilayers can be produced by means of this hollow-fiber spinneret according to the invention.
Eine alternative Ausführungsvariante ergibt sich dadurch, dass die Hohlfaser-Spinndüsen aus drei einzelnen Platten aufgebaut ist, wobei die erste Platte eine zentrale Zuführungsbohrung aufweist, eine sich an die erste Platte anschließende zweite Platte parallele Zuführkanäle und zu diesen angeordnete Vergleichmäßigungszonen sowie ein Nadelstumpf mit konzentrischem Ringkanal und eine zentrale Bohrung aufweist und wobei die an die zweite Platte anschließende dritte Platte eine Düsenstruktur bestehend aus einer zentralen Bohrung und zwei konzentrischen Ringspalten aufweist.
Vorteilhaft ist der äußere Durchmesser der Mehrkanal-Hohlfaser-Spinndüse kleiner als 1 mm. Besonders vorteilhaft ist der äußere Durchmesser der Mehrkanal-Hohlfaser-Spinndüse kleiner oder gleich 0,45 mm. Mit dieser ist eine Dialysemembran mit einem Innendurchmesser von 200-300 µm herstellbar.An alternative embodiment results from the fact that the hollow fiber spinneret is composed of three individual plates, wherein the first plate has a central feed bore, a parallel to the first plate second feed channels and arranged on these equalization zones and a needle stub with concentric annular channel and a central bore and wherein the third plate adjoining the second plate has a nozzle structure consisting of a central bore and two concentric annular gaps.
Advantageously, the outer diameter of the multi-channel hollow fiber spinneret is less than 1 mm. Particularly advantageously, the outer diameter of the multi-channel hollow fiber spinneret is less than or equal to 0.45 mm. With this a dialysis membrane with an inner diameter of 200-300 microns can be produced.
Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus den in der Zeichnung dargestellten Ausführungsbeispielen. Es zeigen:
- Figur 1:
- einen schematischen Schnitt durch eine Hohlfaser-Spinndüse gemäß einer Ausführungsform nach dem Stand der Technik,
- Figur 2:
- einen schematischen Schnitt durch eine Hohlfaser-Spinndüse nach einer ersten Ausgestaltung der Erfindung,
- Figur 3:
- eine schematische Schnittdarstellung einer Hohlfaser-Spinndüse nach einer zweiten Ausführungsvariante der Erfindung, wobei drei Varianten der Anordnung der Massezuführkanäle gezeigt sind,
- Figur 4:
- eine teilweise geschnittene dreidimensionale Darstellung einer Hohlfaser-Spinndüse gemäß
Figur 2 und - Figur 5:
- eine teilweise geschnittene dreidimensionale Darstellung einer Hohlfaser-Spinndüse gemäß der Ausführungsvariante nach
Figur 3 .
- FIG. 1:
- a schematic section through a hollow fiber spinneret according to an embodiment of the prior art,
- FIG. 2:
- a schematic section through a hollow fiber spinneret according to a first embodiment of the invention,
- FIG. 3:
- 1 is a schematic sectional view of a hollow fiber spinneret according to a second embodiment of the invention, wherein three variants of the arrangement of the ground feed channels are shown,
- FIG. 4:
- a partially sectioned three-dimensional representation of a hollow fiber spinneret according to
FIG. 2 and - FIG. 5:
- a partially cut three-dimensional view of a hollow fiber spinneret according to the embodiment according to
FIG. 3 ,
In
Aus den
Bei der Herstellung von Hohlfaser-Spinndüsen mittels Mikrostrukturtechnik wird von 2 runden Waferscheiben mit 100 bis 300 mm Durchmesser ausgegangen. Aus diesen Wafern werden gleichzeitig viele Spinndüsenstrukturen hergestellt. Die einzelnen Hohlfaser-Spinndüsen 10 erhält man dann durch Zerteilen der fertig bearbeiteten Wafer. Die vereinzelten geteilten Spinndüsen können jeweils eine einzige Düsenstruktur, wie hier dargestellt, aber auch mehrere Düsenstrukturen in einem Düsenstrukturverbund enthalten. Dies erreicht man dadurch, dass nicht alle Düsenstrukturen, die auf dem Wafer gebildet wurden, voneinander getrennt werden, sondern dass mehrere Düsenstrukturen zusammen eine Mehrfach-Düseneinheit bilden, die entlang ihrer Außenkontur vom Wafer ausgeschnitten werden.In the production of hollow fiber spinnerets by means of microstructure technology is assumed by 2 round wafer discs with 100 to 300 mm diameter. From these wafers, many spinneret structures are simultaneously produced. The individual
Die Herstellung der Spinndüsen 10 beginnt mit der beidseitigen Strukturierung eines ersten Wafers, der die Elemente 34, 36, 38, 40 der Platte 30 der Spinndüse 10 aufnimmt. Die Strukturen werden mit einer Folge von Standard-Lithographieverfahren, d.h. Masken aus Photoresist, SiO, Si-N oder ähnlichem, und Standard-Ätzverfahren gefertigt. Bei den Standard-Ätzverfahren sind insbesondere das reaktive lonen-Ätzen (RIE), das reaktive lonen-Tiefenätzen (D-RIE) und das Kryo-Ätzen zu nennen. Besonders geeignet sind spezielle Tiefenätzverfahren wie das D-RIE und das Kryo-Ätzen. Die Lithographie-Masken für die Vorder- und Rückseite müssen optisch zueinander ausgerichtet werden. Anschließend wird der zweite Wafer, aus dem die zweite Platte hergestellt werden soll, auf den entsprechend strukturierten ersten Wafer gebondet. Dabei können sämtliche Bondverfahren eingesetzt werden, das Anodische Bonden, das Direktbonden oder ähnliches. Besonders geeignet ist aber das Direktbonden, da die höchsten Festigkeiten erreicht werden und damit ein guter Halt der Nadel auf der ersten Platte gewährleistet wird. Im nächsten Schritt wird die Düsenstrukur 48 mit Ringspalt 42 und Fällmittelbohrung 46 in einem zweistufigen Ätzverfahren hergestellt. Im ersten Schritt wird nur die tiefere Fällmittelbohrung vorangetrieben. Im zweiten Schritt werden dann beide Strukturen fertig geätzt. Zur Anwendung kommen dabei wieder die genannten Lithographie- und Ätzverfahren, wobei hier die Verwendung der Tiefenätzverfahren noch eher angeraten ist als bei der Bearbeitung des ersten Wafers. Im letzten Schritt werden die einzelnen Spinndüsen, wie bereits zuvor beschrieben, durch geeignete Trennverfahren, wie Wafer-Sägen oder Laserbearbeitung aus dem Wafer herausgeschnitten.The production of the
Anhand der
In der zweiten Platte 104 ist ebenfalls eine Fällmittelbohrung 118 ausgenommen, die von einem weiterem Nadelstumpf 120 und einem Ringraum 122 umgeben ist. Weiterhin sind weitere Zuführkanäle 124 mit anschließender Vergleichmäßigungszone 126 in der zweiten Platte 104 ausgenommen. Schließlich weist die dritte Platte 106 zwei Ringspalten 128 und 130 für die jeweiligen polymeren Materialien, die koextrudiert werden sollen, auf, sowie eine Nadel 132 mit Fällmittelbohrung 134. Bei den Varianten der
Die drei Platten 102, 104 und 106 werden wiederum durch ein geeignetes Bondverfahren, vorteilhaft ein Direktbonden, miteinander zum Grundkörper 100 verbunden. Ansonsten entspricht das Herstellverfahren für die Hohlfaser-Spinndüse 10 gemäß der
Claims (9)
dadurch gekennzeichnet,
dass mindestens zwei mittels Mikrostrukturtechnik strukturierte plattenförmige Körper zu dem Grundkörper zusammengefügt sind.Hollow-fiber spinneret, in which in a base body precipitant / proppant - and Massezuführungskanäle and associated with these nozzle structure with a mass outlet opening and a needle with precipitant / Stützmittelbohrung are formed,
characterized,
in that at least two plate-shaped bodies structured by microstructure technology are joined together to form the basic body.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10211052A DE10211052A1 (en) | 2002-03-13 | 2002-03-13 | Hollow fiber spinning nozzle |
EP03706500A EP1483435B1 (en) | 2002-03-13 | 2003-02-13 | Hollow-fiber spinning nozzle |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03706500.0 Division | 2003-02-13 | ||
EP03706500A Division EP1483435B1 (en) | 2002-03-13 | 2003-02-13 | Hollow-fiber spinning nozzle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2112256A1 true EP2112256A1 (en) | 2009-10-28 |
EP2112256B1 EP2112256B1 (en) | 2010-12-22 |
Family
ID=27797745
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03706500A Expired - Lifetime EP1483435B1 (en) | 2002-03-13 | 2003-02-13 | Hollow-fiber spinning nozzle |
EP09008291A Expired - Lifetime EP2112256B1 (en) | 2002-03-13 | 2003-02-13 | Method for producing a hollow fibre spinning nozzle |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03706500A Expired - Lifetime EP1483435B1 (en) | 2002-03-13 | 2003-02-13 | Hollow-fiber spinning nozzle |
Country Status (12)
Country | Link |
---|---|
US (2) | US7393195B2 (en) |
EP (2) | EP1483435B1 (en) |
JP (1) | JP4340161B2 (en) |
KR (1) | KR100974985B1 (en) |
AT (2) | ATE492666T1 (en) |
AU (1) | AU2003208849A1 (en) |
BR (1) | BR0307233A (en) |
CA (1) | CA2474274C (en) |
DE (3) | DE10211052A1 (en) |
ES (2) | ES2357373T3 (en) |
HR (1) | HRP20040714B1 (en) |
WO (1) | WO2003076701A1 (en) |
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WO2018206675A1 (en) | 2017-05-11 | 2018-11-15 | Fresenius Medical Care Deutschland Gmbh | Spinneret, device having a spinneret, method for producing a hollow fiber or hollow fiber membrane by means of a spinneret and filter |
WO2023036919A1 (en) | 2021-09-10 | 2023-03-16 | Oceansafe Ag | Fiber |
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US7762801B2 (en) | 2004-04-08 | 2010-07-27 | Research Triangle Institute | Electrospray/electrospinning apparatus and method |
US7765949B2 (en) * | 2005-11-17 | 2010-08-03 | Palo Alto Research Center Incorporated | Extrusion/dispensing systems and methods |
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US8704086B2 (en) | 2008-11-07 | 2014-04-22 | Solarworld Innovations Gmbh | Solar cell with structured gridline endpoints vertices |
US8080729B2 (en) | 2008-11-24 | 2011-12-20 | Palo Alto Research Center Incorporated | Melt planarization of solar cell bus bars |
US8586129B2 (en) | 2010-09-01 | 2013-11-19 | Solarworld Innovations Gmbh | Solar cell with structured gridline endpoints and vertices |
JP6018076B2 (en) | 2010-12-22 | 2016-11-02 | フレゼニウス メディカル ケアー ドイチュラント ゲゼルシャフト ミット ベシュレンクテル ハフツングFresenius Medical Care Deutschland GmbH | Film without delamination |
DE102011010921A1 (en) | 2011-02-10 | 2012-08-16 | Fresenius Medical Care Deutschland Gmbh | Membrane used for e.g. reverse osmosis, comprises at least two layers which are at least partly covalently and delamination free bonded to each other, where each layer comprises layer-forming material(s) comprising polymer(s) |
DE102010055731A1 (en) | 2010-12-22 | 2012-06-28 | Fresenius Medical Care Deutschland Gmbh | Membrane used for e.g. reverse osmosis, comprises at least two layers which are at least partly covalently and delamination free bonded to each other, where each layer comprises layer-forming material(s) comprising polymer(s) |
US10371468B2 (en) | 2011-11-30 | 2019-08-06 | Palo Alto Research Center Incorporated | Co-extruded microchannel heat pipes |
US9120190B2 (en) | 2011-11-30 | 2015-09-01 | Palo Alto Research Center Incorporated | Co-extruded microchannel heat pipes |
US8875653B2 (en) | 2012-02-10 | 2014-11-04 | Palo Alto Research Center Incorporated | Micro-extrusion printhead with offset orifices for generating gridlines on non-square substrates |
CN103668484A (en) * | 2013-12-19 | 2014-03-26 | 吴江明敏制衣有限公司松陵分公司 | Scattering fiber spinneret plate |
CN103911678B (en) * | 2014-04-17 | 2016-04-13 | 华中科技大学 | A kind of coaxial nozzle for electrofluid spray printing |
CN103981581B (en) * | 2014-05-29 | 2016-05-04 | 苏州东茂纺织实业有限公司 | A kind of imitated natural fabric fuse equipment |
CN104775171B (en) * | 2015-03-30 | 2018-01-02 | 临邑大正特纤新材料有限公司 | Hole lotus root shape fiber sprinning assembly |
CN104762672A (en) * | 2015-04-23 | 2015-07-08 | 宁波斯宾拿建嵘精密机械有限公司 | Spinneret |
CN106236323B (en) * | 2016-08-05 | 2017-11-17 | 浙江大学 | A kind of nerve trachea with contact guiding function and preparation method thereof and device |
WO2018056584A1 (en) | 2016-09-21 | 2018-03-29 | 삼성전자 주식회사 | Method for measuring skin condition and electronic device therefor |
US20190233972A1 (en) | 2018-01-31 | 2019-08-01 | Saudi Arabian Oil Company | Producing Fibers Using Spinnerets |
DE102019203837A1 (en) | 2019-03-20 | 2020-09-24 | Fresenius Medical Care Deutschland Gmbh | Plant and process for the production of hollow fiber membranes |
US20230008772A1 (en) * | 2021-07-08 | 2023-01-12 | University Of Kentucky Research Foundation | Spinneret, blowing system and method for producing hollow fibers |
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- 2003-02-13 ES ES09008291T patent/ES2357373T3/en not_active Expired - Lifetime
- 2003-02-13 EP EP03706500A patent/EP1483435B1/en not_active Expired - Lifetime
- 2003-02-13 AT AT09008291T patent/ATE492666T1/en active
- 2003-02-13 US US10/504,854 patent/US7393195B2/en not_active Expired - Lifetime
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- 2003-02-13 DE DE50313356T patent/DE50313356D1/en not_active Expired - Lifetime
- 2003-02-13 EP EP09008291A patent/EP2112256B1/en not_active Expired - Lifetime
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018206675A1 (en) | 2017-05-11 | 2018-11-15 | Fresenius Medical Care Deutschland Gmbh | Spinneret, device having a spinneret, method for producing a hollow fiber or hollow fiber membrane by means of a spinneret and filter |
WO2023036919A1 (en) | 2021-09-10 | 2023-03-16 | Oceansafe Ag | Fiber |
Also Published As
Publication number | Publication date |
---|---|
EP1483435A1 (en) | 2004-12-08 |
ES2357373T3 (en) | 2011-04-25 |
JP4340161B2 (en) | 2009-10-07 |
ATE492666T1 (en) | 2011-01-15 |
HRP20040714B1 (en) | 2012-07-31 |
DE50313356D1 (en) | 2011-02-03 |
CA2474274C (en) | 2011-11-29 |
CA2474274A1 (en) | 2003-09-18 |
EP1483435B1 (en) | 2009-09-02 |
HRP20040714A2 (en) | 2005-08-31 |
EP2112256B1 (en) | 2010-12-22 |
ATE441742T1 (en) | 2009-09-15 |
ES2329564T3 (en) | 2009-11-27 |
DE50311868D1 (en) | 2009-10-15 |
WO2003076701A1 (en) | 2003-09-18 |
JP2005520061A (en) | 2005-07-07 |
US20050087637A1 (en) | 2005-04-28 |
DE10211052A1 (en) | 2003-10-23 |
KR100974985B1 (en) | 2010-08-09 |
US20080268082A1 (en) | 2008-10-30 |
BR0307233A (en) | 2004-12-07 |
US8490283B2 (en) | 2013-07-23 |
US7393195B2 (en) | 2008-07-01 |
AU2003208849A1 (en) | 2003-09-22 |
KR20040094722A (en) | 2004-11-10 |
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