EP0430926B1 - Spinnerette - Google Patents

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Publication number
EP0430926B1
EP0430926B1 EP90890308A EP90890308A EP0430926B1 EP 0430926 B1 EP0430926 B1 EP 0430926B1 EP 90890308 A EP90890308 A EP 90890308A EP 90890308 A EP90890308 A EP 90890308A EP 0430926 B1 EP0430926 B1 EP 0430926B1
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EP
European Patent Office
Prior art keywords
carrier plate
spinning
capillaries
spinning nozzle
plate
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.)
Expired - Lifetime
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EP90890308A
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German (de)
French (fr)
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EP0430926A3 (en
EP0430926A2 (en
Inventor
Stefan Zikeli
Hermann Koberger
Dieter Dr. Eichinger
Stefan Dr. Astegger
Karin Dr. Weinzierl
Raimund Jurhovic
Bernd Dr. Wolschner
Heinrich Dr. Firgo
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Lenzing AG
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Lenzing AG
Chemiefaser Lenzing AG
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Publication of EP0430926A2 publication Critical patent/EP0430926A2/en
Publication of EP0430926A3 publication Critical patent/EP0430926A3/en
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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
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/02—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
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/02—Spinnerettes
    • D01D4/027—Spinnerettes containing inserts

Definitions

  • the invention relates to a spinneret with a nozzle head and a spinning plate, which consists of a stable carrier plate, in which holes are provided, inserts in which the capillaries are made are inserted or pressed into the holes.
  • Spinning nozzles are required for the production of fibers, the starting material of the spinning mass consisting of organic or inorganic material.
  • the flowable or pumpable material which mostly has a very high viscosity, is pressed through the differently shaped nozzle capillaries and then, depending on the process, solidified into fibers in specially designed spinning and post-treatment steps.
  • a good spinneret is expected to have quality features such as the quality of the bores (dimensional accuracy), smoothness of the borehole walls, sharp edges of the borehole outlet, smoothness of the nozzle bottom, corrosion resistance and specially shaped spinning channels.
  • the necessary strength of the spinneret should be mentioned, since the spinneret is under enormous pressure when spinning the mass. Especially when spinning highly viscous cellulose solution spinning masses, the use of spinneret or spinneret materials with high strength is necessary, since spinning pressures up to 200 bar can occur.
  • NMMO N-methylmorpholine-N-oxide
  • a tertiary amine-N-oxide which acts as a solvent for cellulose. Due to the high spinning viscosities, spinnerets with reinforced spinning plates must be used.
  • the stickiness of the threads must be reduced. This can be achieved by applying a non-solvent liquid to the surface of the freshly extruded threads in order to reduce the effect of the solvent (cf. DE-AS 28 44 163).
  • a polyalkylene ether in particular polyethylene glycol, can be added to the tertiary amine oxide (cf. DD-PS 218 121).
  • the known spinnerets do sometimes have high capillary densities, but they cannot withstand high spinning pressures: the spinning plate bulges or bursts. Such nozzles are used in the viscose process.
  • spinnerets are known that are made from special steel types that can withstand high loads. Such spinnerets are used in the dry spinning process for plastics.
  • This nozzle construction in turn has the disadvantage that a pre-drilling in the relatively hard but firm material is necessary for the respective spinning capillary due to the complicated attachment of the nozzle holes in the nozzle plate, in order then to be able to attach the capillary with a fine diameter. Due to the larger diameter of the pilot hole, only a smaller number of spinning capillaries is possible in the nozzle plate, which in turn results in a lower capillary density.
  • nozzles with interchangeable inserts are to be created.
  • the material of the insert is equally hard or even harder than the material of the carrier plate (see page 1, right column, lines 61-63), and the insert has practically the same thickness as the carrier plate (see Fig. 1). It is therefore clear that the hole density is by no means can be larger than if the capillaries were made directly in the carrier plate.
  • a carrier plate is therefore used, the thickness of which can be dimensioned sufficiently large so that it withstands high spinning pressures. It can also be made from any solid material because it does not itself have any spinning capillaries. Plates, e.g. Precious metal platelets, inserted or pressed, in which - due to the softness of the metal - the necessary number of spinning capillaries can be attached relatively easily without pre-drilling.
  • the holes in the carrier plate are preferably stepped bores, the gradation being close to the outer surface of the carrier plate and the smaller diameter being on the outer surface of the carrier plate.
  • a perforated plate is provided on the inside of the carrier plate and a filter is arranged between the carrier plate and the perforated plate.
  • the holes in the perforated plate are matched to the arrangement of the platelets, so that the cellulose solution or polymer melt is distributed appropriately. Dirt particles or undissolved polymer fragments are retained by the filter.
  • the nozzle head 1 (Fig. 1) suitably consists of corrosion-resistant stainless steel. It has heating channels 6 for temperature control and forms the upper part of the spinneret into which the cellulose solution is fed and continuously tempered during spinning.
  • a perforated plate 3 In the nozzle head 1 is a perforated plate 3, a filter 4 and a carrier plate 2 is used. These three elements are pressed onto the nozzle head 1 by a threaded nut 5. A soft seal (not shown) can be used for sealing.
  • the carrier plate 2 (see FIG. 2) has a plurality of holes 7 designed as stepped bores. (For the sake of simplicity, only a single hole 7 is shown in FIG. 2.) Platelets 8 (see FIG. 3) made of relatively soft material are pressed into these holes. In this soft material, many capillaries 9 can easily be produced close to each other. (In FIG. 3, only a single capillary 9 is shown for simplification.)
  • the holes in the perforated plate 3 are arranged in exactly the same way as the holes in the carrier plate 2, with the filter 4 in between.
  • the filters 4 can have very different pore sizes and consist of different materials. Corrosion-resistant metal fleeces are preferred.
  • the spinning mass is distributed over the perforated plate 3, filtered and then enters the holes 7 or stepped bores and from there into the capillaries 9 of the platelets 8.
  • a spinneret designed according to the invention high capillary densities can be achieved despite the high compressive strength.
  • the element-like structure of the nozzle package allows the carrier plates to be exchanged individually with precious metal plates in which there are capillaries with different diameters, lengths and cross sections.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Nozzles (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Magnetic Heads (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Threshing Machine Elements (AREA)
  • Coating Apparatus (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Continuous Casting (AREA)
  • Artificial Filaments (AREA)

Abstract

In a spinneret, the spinning plate having the spinning capillaries (9) consists, according to the invention, of a carrier plate (2) having holes (7), especially stepped bores, into which are inserted or pressed small plates (8) containing the capillaries (9). The carrier plate (2) can therefore be of any thickness and consist of material of any strength, in order to achieve a high pressure resistance, without making it difficult to produce closely arranged capillaries (9), since the capillaries can be made in the softer small plates (8). <IMAGE>

Description

Die Erfindung betrifft eine Spinndüse mit einem Düsenkopf und einer Spinnplatte, die aus einer stabilen Trägerplatte bsteht, in der Löcher vorgesehen sind, wobei in den Löchern Einsätze eingesetzt oder eingepreßt sind, in denen die Kapillaren ausgeführt sind.The invention relates to a spinneret with a nozzle head and a spinning plate, which consists of a stable carrier plate, in which holes are provided, inserts in which the capillaries are made are inserted or pressed into the holes.

Spinndüsen werden für die Erzeugung von Fasern benötigt, wobei der Ausgangsstoff der Spinnmasse aus organischem oder anorganischem Material besteht. Das fließ- bzw. pumpfähige Material, welches zumeist eine sehr hohe Viskosität besitzt, wird durch die unterschiedlich ausgeformten Düsenkapillaren gepreßt und anschließend, je nach Verfahren, in speziell dafür ausgerichteten Spinn- und Nachbehandlungsschritten zu Fasern verfestigt.Spinning nozzles are required for the production of fibers, the starting material of the spinning mass consisting of organic or inorganic material. The flowable or pumpable material, which mostly has a very high viscosity, is pressed through the differently shaped nozzle capillaries and then, depending on the process, solidified into fibers in specially designed spinning and post-treatment steps.

Von einer guten Spinndüse erwartet man Qualitätsmerkmale, wie Qualität der Bohrungen (Maßgenauigkeit), Glätte der Bohrlochwandungen, Scharfkantigkeit des Bohrlochaustrittes, Glätte des Düsenbodens, Korrosionsbeständigkeit und speziell ausgeformte Spinnkanäle. Nicht zuletzt ist die notwendige Festigkeit der Spinndüse zu erwähnen, da die Spinndüse beim Verspinnen der Masse unter enormer Druckbeanspruchung steht. Speziell beim Verspinnen von hochviskosen Celluloselösungsspinnmassen ist der Einsatz von Spinndüsen- bzw. Spinndüsenmaterialien mit hoher Festigkeit notwendig, da Spinndrücke bis 200 bar auftreten können.A good spinneret is expected to have quality features such as the quality of the bores (dimensional accuracy), smoothness of the borehole walls, sharp edges of the borehole outlet, smoothness of the nozzle bottom, corrosion resistance and specially shaped spinning channels. Last but not least, the necessary strength of the spinneret should be mentioned, since the spinneret is under enormous pressure when spinning the mass. Especially when spinning highly viscous cellulose solution spinning masses, the use of spinneret or spinneret materials with high strength is necessary, since spinning pressures up to 200 bar can occur.

Diese Probleme treten bei Celluloselösungen, die nach dem NMMO-Verfahren hergestellt sind, besonders auf. Dieses Verfahren ist z.B. aus den Beispielen der DE-OS 29 13 589 bekannt. NMMO steht dabei für N-Methylmorpholin-N-oxid, ein tertiäres Amin-N-oxid, das als Lösungsmittel für Cellulose wirkt. Aufgrund der hohen Spinnviskositäten müssen Spinndüsen mit verstärkten Spinnplatten eingesetzt werden.These problems occur particularly with cellulose solutions which are produced by the NMMO process. This method is e.g. known from the examples of DE-OS 29 13 589. NMMO stands for N-methylmorpholine-N-oxide, a tertiary amine-N-oxide, which acts as a solvent for cellulose. Due to the high spinning viscosities, spinnerets with reinforced spinning plates must be used.

Anderseits besteht die Tendenz, die Dichte der Kapillaren der Spinndüsen zu erhöhen, um die Leistung pro Flächeneinheit der Spinnstelle zu erhöhen. Das Problem, das dabei auftritt, besteht darin, daß die Fäden dazu neigen, untereinander zu verkleben.On the other hand, there is a tendency to increase the capillary density of the spinnerets in order to increase the performance per unit area of the spinning station. The problem that arises is that the threads tend to stick together.

Um die Dichte der Kapillaren trotzdem erhöhen zu können, muß daher die Klebrigkeit der Fäden verringert werden. Das kann dadurch verwirklicht werden, daß auf die Oberfläche der frisch extrudierten Fäden eine nicht lösende Flüssigkeit aufgebracht wird, um die Wirkung des Lösungsmittels herabzusetzen (vgl. die DE-AS 28 44 163). Außerdem kann dem tertiären Aminoxid ein Polyalkylenether, insbesondere Polyethylenglykol, zugesetzt werden (vgl. die DD-PS 218 121).In order to still be able to increase the density of the capillaries, the stickiness of the threads must be reduced. This can be achieved by applying a non-solvent liquid to the surface of the freshly extruded threads in order to reduce the effect of the solvent (cf. DE-AS 28 44 163). In addition, a polyalkylene ether, in particular polyethylene glycol, can be added to the tertiary amine oxide (cf. DD-PS 218 121).

Es besteht somit Bedarf an einer Spinndüse mit relativ großem Durchmesser und hoher Kapillardichte und daraus resultierender hoher Anzahl an Kapillaren, um Celluloselösung wirtschaftlich zu verspinnen. Gleichzeitig soll die Spinndüse hohen Drücken (bis zu 130 bar) standhalten.There is therefore a need for a spinneret with a relatively large diameter and high capillary density and the resulting high number of capillaries in order to economically spin cellulose solution. At the same time, the spinneret should withstand high pressures (up to 130 bar).

Die bekannten Spinndüsen weisen zwar zum Teil hohe Kapillardichten auf, halten aber hohen Spinndrücken nicht stand: die Spinnplatte wölbt sich oder platzt. Solche Düsen werden im Viskoseprozeß eingesetzt.The known spinnerets do sometimes have high capillary densities, but they cannot withstand high spinning pressures: the spinning plate bulges or bursts. Such nozzles are used in the viscose process.

Anderseits sind Spinndüsen bekannt, die aus speziellen Stahltypen gefertigt sind, die hoch beanspruchbar sind. Derartige Spinndüsen werden beim Trockenspinnverfahren für Kunststoffe verwendet. Diese Düsenkonstruktion hat wiederum den Nachteil, daß durch das komplizierte Anbringen der Düsenlöcher in der Düsenplatte für die jeweilige Spinnkapillare eine Vorbohrung im relativ harten, aber festen Material notwendig ist, um dann die Kapillare mit feinem Durchmesser anbringen zu können. Durch die im Durchmesser größere Vorbohrung ist nur eine geringere Anzahl von Spinnkapillaren in der Düsenplatte möglich, wodurch sich wiederum eine geringere Kapillardichte ergibt. Dabei ist es auch schon bekannt (DE-A 808 872), die Vorbohrung ganz durchzubohren (am Ende mit einer Verjüngerung) und dann einen Goldeinsatz einzupressen, in dem dann eine Kapillare angebracht wird. Auch mit derartigen Düsen kann aber die Lochdichte nicht erhöht werden.On the other hand, spinnerets are known that are made from special steel types that can withstand high loads. Such spinnerets are used in the dry spinning process for plastics. This nozzle construction in turn has the disadvantage that a pre-drilling in the relatively hard but firm material is necessary for the respective spinning capillary due to the complicated attachment of the nozzle holes in the nozzle plate, in order then to be able to attach the capillary with a fine diameter. Due to the larger diameter of the pilot hole, only a smaller number of spinning capillaries is possible in the nozzle plate, which in turn results in a lower capillary density. It is also known (DE-A 808 872) to drill through the pilot hole completely (at the end with a taper) and then to press in a gold insert in which a capillary is then attached. However, the hole density cannot be increased even with such nozzles.

Gemäß der GB-PS 1 126 609 sollen Düsen mit auswechselbaren Einsätzen geschaffen werden. Das Material des Einsatzes ist gleich hart oder sogar härter als das Material der Trägerplatte (siehe Seite 1, rechte Spalte, Zln. 61-63), und der Einsatz hat praktisch die gleiche Dicke wie die Trägerplatte (siehe die Fig. 1). Es ist daher klar, daß die Lochdichte dadurch keinesfalls größer sein kann, als wenn die Kapillaren direkt in der Trägerplatte ausgeführt wären.According to GB-PS 1 126 609, nozzles with interchangeable inserts are to be created. The material of the insert is equally hard or even harder than the material of the carrier plate (see page 1, right column, lines 61-63), and the insert has practically the same thickness as the carrier plate (see Fig. 1). It is therefore clear that the hole density is by no means can be larger than if the capillaries were made directly in the carrier plate.

Es ist Aufgabe der vorliegenden Erfindung, eine Spinndüse zu schaffen, die einerseits hohen Spinndrücken standhält und anderseits eine hohe Kapillardichte (Kapillaren/mm²) aufweist.It is an object of the present invention to provide a spinneret which on the one hand withstands high spinning pressures and on the other hand has a high capillary density (capillaries / mm²).

Diese Aufgabe wird durch eine Spinndüse der eingangs genannten Art erfindungsgemäß dadurch gelöst, daß Plättchen eingesetzt oder eingepresst werden, in denen jeweils eine Vielzahl von Kapillaren ausgeführt ist. Es ist dabei zweckmäßig, wenn die Trägerplatte aus Edelstahl und die Plättchen aus einem Material mit geringerer Härte als Stahl, insbesondere aus einem Edelmetall,bestehen. Bevorzugt werden derzeit Gold, Silber und Tantal.This object is achieved according to the invention by means of a spinneret of the type mentioned at the outset in that platelets are inserted or pressed in, in each of which a large number of capillaries are embodied. It is expedient if the carrier plate made of stainless steel and the platelets made of a material with a lower hardness than steel, in particular one Precious metal. Gold, silver and tantalum are currently preferred.

Erfindungsgemäß wird also eine Trägerplatte verwendet, deren Stärke ausreichend groß bemessen werden kann, sodaß sie hohen Spinndrücken standhält. Sie kann auch aus beliebig festem Material hergestellt sein, weil sie selbst keine Spinnkapillaren aufweist. In die Löcher der Trägerplatte sind Plättchen, z.B. Edelmetallplättchen, eingesetzt oder eingepreßt, in denen - bedingt durch die Weichheit des Metalls - relativ einfach die notwendige Anzahl an Spinnkapillaren ohne Vorbohren angebracht werden kann.According to the invention, a carrier plate is therefore used, the thickness of which can be dimensioned sufficiently large so that it withstands high spinning pressures. It can also be made from any solid material because it does not itself have any spinning capillaries. Plates, e.g. Precious metal platelets, inserted or pressed, in which - due to the softness of the metal - the necessary number of spinning capillaries can be attached relatively easily without pre-drilling.

Vorzugsweise sind die Löcher in der Trägerplatte Stufenbohrungen, wobei sich die Abstufung nahe der Außenfläche der Trägerplatte befindet und der geringere Durchmesser an der Außenfläche der Trägerplatte ist. Dadurch wird das eingesetzte bzw. eingepreßte Plättchen zusätzlich gehalten und kann sehr hohen Spinndrücken standhalten.The holes in the carrier plate are preferably stepped bores, the gradation being close to the outer surface of the carrier plate and the smaller diameter being on the outer surface of the carrier plate. As a result, the inserted or pressed platelet is additionally held and can withstand very high spinning pressures.

Schließlich ist es zweckmäßig, wenn an der Innenseite der Trägerplatte eine Lochplatte vorgesehen ist und zwischen der Trägerplatte und der Lochplatte ein Filter angeordnet ist. Die Löcher der Lochplatte sind dabei auf die Anordnung der Plättchen abgestimmt, sodaß die Celluloselösung oder Polymerschmelze zweckentsprechend verteilt wird. Durch das Filter werden Schmutzpartikel bzw. ungelöste Polymerbruchstücke zurückgehalten.Finally, it is expedient if a perforated plate is provided on the inside of the carrier plate and a filter is arranged between the carrier plate and the perforated plate. The holes in the perforated plate are matched to the arrangement of the platelets, so that the cellulose solution or polymer melt is distributed appropriately. Dirt particles or undissolved polymer fragments are retained by the filter.

Anhand der beiliegenden Figuren wird die Erfindung beispielsweise näher erläutert. Es zeigt:

  • Fig. 1 eine erfindungsgemäße Spinndüse im Schnitt; Fig. 2 die Trägerplatte der Spinndüse nach Fig. 1, gegenüber Fig. 1 etwas vergrößert, zum Teil im Schnitt; und Fig. 3 ein Plättchen zum Einsetzen in die Trägerplatte nach Fig. 2, gegenüber Fig. 2 vergrößert, zum Teil im Schnitt.
The invention is explained in more detail, for example, with reference to the accompanying figures. It shows:
  • Figure 1 shows a spinneret according to the invention in section. FIG. 2 shows the carrier plate of the spinneret according to FIG. 1, somewhat enlarged compared to FIG. 1, partly in section; and FIG. 3 shows a plate for insertion into the carrier plate according to FIG. 2, enlarged compared to FIG. 2, partly in section.

Der Düsenkopf 1 (Fig. 1) besteht zweckmäßigerweise aus korrosionsfestem Edelstahl. Er hat Beheizungskanäle 6 zur Temperierung und bildet den Oberteil der Spinndüse, in den die Celluloselösung eingespeist und während des Verspinnens kontinuierlich temperiert wird.The nozzle head 1 (Fig. 1) suitably consists of corrosion-resistant stainless steel. It has heating channels 6 for temperature control and forms the upper part of the spinneret into which the cellulose solution is fed and continuously tempered during spinning.

In den Düsenkopf 1 ist eine Lochplatte 3, ein Filter 4 und eine Trägerplatte 2 eingesetzt. Diese drei Elemente sind durch eine Gewindemutter 5 an den Düsenkopf 1 angepreßt. Zur Abdichtung kann eine Weichdichtung (nicht dargestellt) verwendet werden.In the nozzle head 1 is a perforated plate 3, a filter 4 and a carrier plate 2 is used. These three elements are pressed onto the nozzle head 1 by a threaded nut 5. A soft seal (not shown) can be used for sealing.

Die Trägerplatte 2 (siehe Fig. 2) weist mehrere, als Stufenbohrungen ausgebildete Löcher 7 auf. (In der Fig. 2 ist zur Vereinfachung nur ein einziges Loch 7 dargestellt.) In diese Löcher werden Plättchen 8 (siehe Fig. 3) aus relativ weichem Material eingepreßt. In diesem weichen Material können leicht viele Kapillaren 9 dicht nebeneinander hergestellt werden. (In Fig. 3 ist zur Vereinfachung nur eine einzige Kapillare 9 dargestellt.)The carrier plate 2 (see FIG. 2) has a plurality of holes 7 designed as stepped bores. (For the sake of simplicity, only a single hole 7 is shown in FIG. 2.) Platelets 8 (see FIG. 3) made of relatively soft material are pressed into these holes. In this soft material, many capillaries 9 can easily be produced close to each other. (In FIG. 3, only a single capillary 9 is shown for simplification.)

Die Löcher der Lochplatte 3 sind genauso angeordnet wie die Löcher der Trägerplatte 2, dazwischen liegt das Filter 4. Die Filter 4 können - abhängig von der Celluloselösung oder der Polymerschmelze - stark unterschiedliche Porenweite haben und aus verschiedenen Materialien bestehen. Bevorzugt werden korrosionsbeständige Metallvliese. Die Spinnmasse wird über die Lochplatte 3 verteilt, gefiltert und tritt dann in die Löcher 7 bzw. Stufenbohrungen und von dort in die Kapillaren 9 der Plättchen 8 ein.The holes in the perforated plate 3 are arranged in exactly the same way as the holes in the carrier plate 2, with the filter 4 in between. Depending on the cellulose solution or the polymer melt, the filters 4 can have very different pore sizes and consist of different materials. Corrosion-resistant metal fleeces are preferred. The spinning mass is distributed over the perforated plate 3, filtered and then enters the holes 7 or stepped bores and from there into the capillaries 9 of the platelets 8.

Bei einer erfindungsgemäß ausgebildeten Spinndüse können trotz hoher Druckfestigkeit hohe Kapillardichten erzielt werden. So wurde z.B. eine Spinndüse entwickelt, die bei einem Durchmesser von 45 mm 1147 Kapillaren aufweist (was 0,72 Kapillaren/mm² entspricht) und die für einen Betriebsdruck von ca. 85 bar ausgelegt ist. Eine andere Spinndüse hatte 1,19 Kapillaren/mm² und war für ca. 55 bar Betriebsdruck ausgelegt.With a spinneret designed according to the invention, high capillary densities can be achieved despite the high compressive strength. For example, developed a spinneret with a diameter of 45 mm 1147 capillaries (which corresponds to 0.72 capillaries / mm²) and which is designed for an operating pressure of approx. 85 bar. Another spinneret had 1.19 capillaries / mm² and was designed for an operating pressure of approx. 55 bar.

Der elementartige Aufbau des Düsenpaketes erlaubt ein individuelles Austauschen der Trägerplatten mit Edelmetallplättchen, in denen sich Kapillaren mit unterschiedlichen Durchmessern, Längen und Querschnitten befinden.The element-like structure of the nozzle package allows the carrier plates to be exchanged individually with precious metal plates in which there are capillaries with different diameters, lengths and cross sections.

Claims (8)

  1. A spinning nozzle with a nozzle head (1) and a spinning plate which consists of a stable carrier plate (2) in which holes (7) are provided, wherein in the holes (7) small plates (8) of a material less hard than steel are inserted or pressed, in which in each case a plurality of capillaries (9) are constructed, and wherein the capillary density of the spinning nozzle amounts to at least 0.72 capillaries/mm².
  2. A spinning nozzle according to Claim 1, in which the carrier plate (2) consists of high-grade steel.
  3. A spinning nozzle according to Claim 1 or 2, in which the small plates (8) consist of a precious metal.
  4. A spinning nozzle according to Claim 3, in which the small plates (8) consist of gold or silver.
  5. A spinning nozzle according to Claim 3, in which the small plates (8) consist of tantalum.
  6. A spinning nozzle according to one of Claims 1 to 5, in which the holes (7) in the carrier plate (2) are stepped bores, wherein the graduations are situated close to the outer surface of the carrier plate (2) and the smaller diameter is on the outer surface of the carrier plate (2).
  7. A spinning nozzle according to one of Clams 1 to 6, in which a perforated plate (3) is provided on the inner side of the carrier plate (2) and in which a filter (4) is arranged between the carrier plate (2) and the perforated plate (3).
  8. A spinning nozzle according to one of Claims 1 to 7, in which the nozzle head (1) is provided with heating canals (6) for tempering.
EP90890308A 1989-11-29 1990-11-27 Spinnerette Expired - Lifetime EP0430926B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0272489A AT397392B (en) 1989-11-29 1989-11-29 SPIDER NOZZLE
AT2724/89 1989-11-29

Publications (3)

Publication Number Publication Date
EP0430926A2 EP0430926A2 (en) 1991-06-05
EP0430926A3 EP0430926A3 (en) 1992-05-13
EP0430926B1 true EP0430926B1 (en) 1995-09-06

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EP90890308A Expired - Lifetime EP0430926B1 (en) 1989-11-29 1990-11-27 Spinnerette

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EP (1) EP0430926B1 (en)
JP (1) JPH03174006A (en)
KR (1) KR0157408B1 (en)
CN (1) CN1052155A (en)
AT (2) AT397392B (en)
AU (1) AU6657690A (en)
BG (1) BG93282A (en)
BR (1) BR9006022A (en)
CA (1) CA2030043A1 (en)
CZ (1) CZ283858B6 (en)
DE (1) DE59009625D1 (en)
DK (1) DK0430926T3 (en)
ES (1) ES2024388T3 (en)
FI (1) FI92845C (en)
GR (1) GR910300097T1 (en)
IE (1) IE69038B1 (en)
IL (1) IL96314A0 (en)
NO (1) NO176445C (en)
PL (1) PL165105B1 (en)
PT (2) PT96019A (en)
RO (1) RO108011B1 (en)
RU (1) RU1838462C (en)
TR (1) TR27239A (en)
YU (1) YU48011B (en)

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EP2565304A1 (en) 2011-09-02 2013-03-06 Aurotec GmbH Extrusion method and device
EP2565303A1 (en) 2011-09-02 2013-03-06 Aurotec GmbH Extrusion method
EP3702496A1 (en) 2019-02-26 2020-09-02 Lenzing Aktiengesellschaft Mould and method for manufacturing a mould for extruding cellulose moulded bodies
EP3901333A1 (en) 2020-04-22 2021-10-27 Aurotec GmbH Production of filaments with controlled gas flow

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ATA53792A (en) * 1992-03-17 1995-02-15 Chemiefaser Lenzing Ag METHOD FOR PRODUCING CELLULOSIC MOLDED BODIES, DEVICE FOR IMPLEMENTING THE METHOD AND USE OF A SPINNING DEVICE
TR28441A (en) * 1993-05-24 1996-07-04 Courtaulds Fibres Holdings Ltd Spinning cells that can be used to coagulate lyocell filaments.
US5652001A (en) * 1993-05-24 1997-07-29 Courtaulds Fibres Limited Spinnerette
US5984655A (en) * 1994-12-22 1999-11-16 Lenzing Aktiengesellschaft Spinning process and apparatus
DE10043297B4 (en) * 2000-09-02 2005-12-08 Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. Process for the production of cellulose fibers and cellulose filament yarns
RU2215071C1 (en) * 2002-05-18 2003-10-27 Открытое акционерное общество "Чепецкий механический завод" Spinneret for forming of chemical fibers and filaments from solutions
AT413545B (en) * 2003-07-14 2006-03-15 Chemiefaser Lenzing Ag METHOD FOR THE PRODUCTION OF CELLULOSIC FORM BODIES
CN103352258A (en) * 2013-07-08 2013-10-16 常熟市沪联印染有限公司 Spinneret device with filter screen
CN104762671B (en) * 2015-04-16 2017-01-04 湖州旭彩高新纤维有限公司 A kind of fiber heating spinning appts
KR102002726B1 (en) 2018-05-08 2019-07-23 조승형 Nozzle fixing device for melt spinning system
CN108525282B (en) * 2018-06-15 2024-05-14 广东工业大学 Rehabilitation equipment for elderly with brain atrophy

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DE808872C (en) * 1948-10-02 1951-07-19 Degussa Spinneret for the production of fully synthetic threads
NL69191C (en) * 1949-11-23
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2565304A1 (en) 2011-09-02 2013-03-06 Aurotec GmbH Extrusion method and device
EP2565303A1 (en) 2011-09-02 2013-03-06 Aurotec GmbH Extrusion method
WO2013030399A1 (en) 2011-09-02 2013-03-07 Aurotec Gmbh Extrusion method
WO2013030400A1 (en) 2011-09-02 2013-03-07 Aurotec Gmbh Extrusion method and device
EP3702496A1 (en) 2019-02-26 2020-09-02 Lenzing Aktiengesellschaft Mould and method for manufacturing a mould for extruding cellulose moulded bodies
WO2020173783A1 (en) 2019-02-26 2020-09-03 Lenzing Aktiengesellschaft Molding tool and method for producing a molding tool for extruding cellulose molded bodies
EP3901333A1 (en) 2020-04-22 2021-10-27 Aurotec GmbH Production of filaments with controlled gas flow

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BG93282A (en) 1993-12-24
CA2030043A1 (en) 1991-05-30
YU217990A (en) 1994-06-10
IE69038B1 (en) 1996-08-07
JPH03174006A (en) 1991-07-29
GR910300097T1 (en) 1991-12-10
TR27239A (en) 1994-12-20
PT8495T (en) 1992-11-30
PL287957A1 (en) 1991-12-02
FI92845B (en) 1994-09-30
RO108011B1 (en) 1994-01-31
AT397392B (en) 1994-03-25
NO905145D0 (en) 1990-11-28
NO905145L (en) 1991-05-30
FI905437A (en) 1991-05-30
FI905437A0 (en) 1990-11-02
FI92845C (en) 1995-01-10
YU48011B (en) 1996-08-13
PL165105B1 (en) 1994-11-30
KR910009969A (en) 1991-06-28
DK0430926T3 (en) 1995-10-23
ES2024388A4 (en) 1992-03-01
CN1052155A (en) 1991-06-12
IL96314A0 (en) 1991-08-16
CZ283858B6 (en) 1998-06-17
PT8495U (en) 1995-08-09
NO176445C (en) 1995-04-05
EP0430926A3 (en) 1992-05-13
DE59009625D1 (en) 1995-10-12
NO176445B (en) 1994-12-27
ATE127542T1 (en) 1995-09-15
AU6657690A (en) 1991-06-06
CS542790A3 (en) 1992-03-18
KR0157408B1 (en) 1998-12-01
EP0430926A2 (en) 1991-06-05
RU1838462C (en) 1993-08-30
PT96019A (en) 1992-08-31
ATA272489A (en) 1993-08-15
IE904289A1 (en) 1991-06-05
BR9006022A (en) 1991-09-24
ES2024388T3 (en) 1995-11-01

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