EP0545375B1 - Self-sealing spinneret pack - Google Patents
Self-sealing spinneret pack Download PDFInfo
- Publication number
- EP0545375B1 EP0545375B1 EP92120531A EP92120531A EP0545375B1 EP 0545375 B1 EP0545375 B1 EP 0545375B1 EP 92120531 A EP92120531 A EP 92120531A EP 92120531 A EP92120531 A EP 92120531A EP 0545375 B1 EP0545375 B1 EP 0545375B1
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- EP
- European Patent Office
- Prior art keywords
- seal
- nozzle
- pressure piece
- pot
- channel
- 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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-
- 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
- D01D4/08—Supporting spinnerettes or other parts of spinnerette packs
Definitions
- the invention relates to a self-sealing nozzle packet for a spinning head of a spinning machine for spinning endless thread from a viscous spinning liquid under high pressure, consisting of a nozzle pot, in which a nozzle plate is inserted and covered by a filter packet, a piston-like pressure piece that can move axially in the nozzle pot central channel, the upper surface of which adjoins the lower surface of a distributor block which has at least one channel, an upper seal between the pressure piece and the distributor block, a middle seal for sealing the space above the filter pack from the nozzle cup and a lower flat one Ring seal to seal the nozzle cup downwards.
- Such a self-sealing nozzle package and its mode of operation are known from US-A-4,494,921, EP-A2-0 300 120 and EP-B1-0 163 248.
- This known nozzle package can also have a distributor plate (perforated plate) between the nozzle plate and the filter package, which is pot-like at the top is designed to hold the filter package (EP-B1-0 163 248; Item 27).
- this known nozzle package has three, two of which are inadequate seals, one of which, the metal membrane seal, is relatively expensive.
- Another disadvantage was that a relatively large free space was formed by the membrane seal below it, which led to an undesirably long dwell time of the spinning liquid, especially at low thread titers, which resulted in an undesirable change in the same, polymer degradation and the like.
- the present invention was therefore based on the object of providing a generic self-sealing nozzle package which no longer has the disadvantages mentioned above and which is particularly reliable is self-sealing and therefore more reliable, is simpler in construction and therefore cheaper, and has a smaller free space above the filter package, which leads to a reduction in the dwell time of the spinning liquid in this area.
- One part of the task was to be able to increase the filter area of the filter pack even when using a distributor plate (perforated plate).
- the upper seal is tubular, has an inside diameter which corresponds to the diameter of the central channel of the pressure piece or the channel of the distributor block, and extends into both channels, that the upper surface of the pressure piece is firmly attached to the lower surface of the distributor block under operating conditions, that the pressure piece is designed like a pot downwards to receive the filter pack and possibly a distributor plate and that the middle seal is also tubular and the annular gap between the nozzle cup and covers and seals the edge of the pot-like configuration of the pressure piece.
- the principle of the solution on which the invention is based consists in designing the pressure piece movable in the nozzle pot in such a way that annular gaps are formed at the top between the pressure piece and the distributor block and between the pressure piece and the nozzle pot or the distributor plate at the bottom, which initially extend radially from the inside to the outside , the width of the annular gaps (gap width) possibly changing during operational use, and that this Annular gaps are each covered with a tubular seal, so that the seals are pressed radially outward onto the annular gap by the pressurized spinning liquid and thus effect a fluid-tight seal.
- the middle, tubular seal is the upward and / or downward leg of a seal with an L-shaped cross section (angled seal).
- the middle, tubular seal thus also the angled seal, can be arranged above the nozzle plate, the upper part of the seal or the upwardly pointing leg of the angled seal extending into the pot-like configuration of the pressure piece, i.e. into the pot-like configuration of the pressure piece protrudes.
- An important aspect of the invention is that the sealing effect of the upper and middle, tubular seals, or the upward and / or downward leg of the angular seal, is achieved in that the seals by the high pressure of the spinning liquid (for example 50 to 80 bar) are pressed radially outwards and slightly expanded.
- the membrane seal is no longer necessary and when using an angled seal only two instead of three seals are required, as the upward and / or downward leg of the angled seal performs the sealing function of the membrane seal. This also means that the space above the filter package can now be made much smaller. The resultant advantage, namely shorter residence time of the spinning liquid, has already been explained.
- the self-sealing effect takes place in the nozzle package according to the invention in the same way as in the known one.
- the pressure piece moves slightly within the nozzle pot by only a few tenths of a millimeter until the upper surface of the pressure piece lies firmly against the lower surface of the distributor block.
- the pressure acts downwards in such a way that the filter pack or - if available - the distributor plate (perforated plate) or the nozzle plate is pressed onto the lower, flat ring seal which, in the case of an angular seal, is formed by the radially inward leg of the angular seal becomes.
- the perforated plate which can be used optionally, is not pot-shaped at the top, but is also flat at the top. This leads to an appreciable increase in the filter area of the filter pack, which can be, for example, approximately 25%, since the outer diameter of the filter pack corresponds to the inner diameter of the nozzle cup in the lower region.
- the filter pack can have the usual means corresponding to the state of the art, such as sieves with different mesh sizes, filter granules, for example sand, with different grain sizes, disks made of sintered materials, etc.
- the distributor plate is expediently provided with a narrow border at the top, the height of which corresponds to the bed height of the filter granulate layer.
- Its design with regard to structure, height, selection of filter media, etc. depends on the type of viscous spinning liquid, which is the melt of thermoplastic polymers such as polyester, polyamide, etc., a solution, such as polyacrylonitrile in solution with DMF, and others can act.
- soft aluminum has proven to be the best material for the seals, but soft iron and other easily deformable materials are also suitable. Suitable materials are those that can withstand the high temperatures of the spinning liquid, which can be up to 450 ° C, for example, in the case of polymer melts.
- the central channel in the pressure piece can have the same diameter or cross-section over its entire length, but can also have a diameter or cross-section that widens or decreases in the flow direction, that is to say it has a conical shape.
- a mixing element preferably a so-called static mixer, can be arranged in the channel of the pressure piece.
- the nozzle cup can be attached to the distributor block using conventional means such as screws or in some other way.
- this has proven to be particularly advantageous known connection using a multi-start thread, which is arranged on the outer circumference of the lower part of the distributor block and as a cooperating counterpart on the inner circumference of the upper part of the nozzle pot. It is possible to achieve a sufficient permanent attachment of the nozzle cup with a rotation of only 180 ° or at most 360 ° of the same. It is important to dimension the pitch of the thread so small that self-locking against loosening of this screw connection is achieved. Otherwise, another protection against rotation, for example a locking pin, must be provided.
- the shape and dimensions of the nozzle package and its parts are not subject to any restrictions - neither upwards nor downwards - and are adapted to the respective requirements.
- Another significant advantage of the nozzle package according to the invention is that its self-sealing effect always occurs reliably even after repeated complete - intentional or unwanted - pressure drop or pressure reduction.
- FIG. 2 an embodiment of the pressure piece 4 is shown.
- the parts 5; 6; 7; 10; 12 and 20, which have already been explained above in relation to FIG. 1, are not listed and described again here.
- 21 designates one of three bores, for example, which make it easier to fix the pressure piece 4 while inserting the filter pack (3) and possibly the distributor plate (11) by means of a corresponding number of pins arranged on a base.
- the pressure piece 4 is reversed around, so with the surface 5 down.
- the channel 12 has in its upper end section the extension 22 for receiving the lower part of the seal 10.
- FIG. 3 differs from the embodiment shown in FIG. 1 only in that the central, tubular seal 14 and the lower, flat seal 15 are not part of an angular seal.
- the lower, flat seal 15 is arranged below the nozzle plate 2. Since all other parts are identical to the parts shown in Figure 1, a further description of this embodiment is omitted.
- FIGS. 4 to 7 essentially differ only in the design of the pressure piece 4 and, if present, the perforated plate 11 and the design and arrangement of the seals 14 and 15. All other parts are therefore only provided with item numbers. if they are mentioned in the description below. In Figures 5 to 7, the upper parts and the filter pack (3) are also omitted. A more detailed description of these figures than the following is unnecessary with regard to the description of FIGS. 1 to 3.
- FIG. 4 shows an embodiment in which no distributor plate (11) is used, so that the filter pack 3 lies directly on the nozzle plate 2.
- the middle, tubular seal 14 and the lower, flat seal 15 are again formed by the legs of an angular seal 13. In this embodiment, this is arranged below the nozzle plate 2.
- the middle, tubular seal 14 is arranged above the distributor plate 11, the lower, flat seal 15 between the distributor plate 11 and the nozzle plate 2.
- the distributor plate 11 is not flat at the top, but rather pot-like - for example for receiving of filter granules such as sand or the like. - educated.
- the central, tubular seal 14 protrudes into the pot-like part of the distributor plate 11 and the pressure piece 4 and lies against the inner surface of the "pot rim".
- annular gap 16 between the lower edge of the pot-like design of the pressure piece 4 and the upper edge of the pot-like design of the distributor plate 11, which is covered by the central, tubular seal 14, can be clearly seen, even if it is caused by the movement of the pressure piece 4 upwards, for example to double the width.
- FIG. 6 corresponds essentially to that shown in Figure 5, but here the central, tubular seal 14 is arranged in an annular groove, which is at the lower end of the pot-like configuration of the pressure piece 4 and at the upper end of the pot-like configuration of the distributor plate 11 is arranged.
- FIG. 7 essentially corresponds to that shown in FIG. In this embodiment, however, the radially outwardly leading annular gap 16 covered by the central, tubular seal 14 does not run horizontally, as in the previously described embodiments, but diagonally upwards. It might as well be sloping downwards. This does not affect the sealing effect.
- FIG. 8 shows a double angular seal in longitudinal section, through which the central, tubular seal 14 is formed both by the upward and downward legs 14a and 14b.
- the lower, flat seal 15 is also formed here, as in the case of a simple angular seal, by the leg pointing inwards.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Description
Die Erfindung betrifft ein selbstdichtendes Düsenpaket für einen Spinnkopf einer Spinnmaschine zum Spinnen von endlosen Faden aus einer viskosen Spinnflüssigkeit unter hohem Druck, bestehend aus einem Düsentopf, in welchen eine Düsenplatte eingesetzt und durch ein Filterpaket abgedeckt ist, einem axial im Düsentopf beweglichen kolbenartigen Druckstuck mit einem zentralen Kanal, das mit seiner oberen Fläche an die untere Fläche eines Verteilerblockes, der wenigstens einen Kanal aufweist, angrenzt, einer oberen Dichtung zwischen dem Druckstück und dem Verteilerblock, einer mittleren Dichtung zum Abdichten des Raumes oberhalb des Filterpaketes gegenüber dem Düsentopf sowie einer unteren flachen Ringdichtung zum Abdichten des Düsentopfes nach unten.The invention relates to a self-sealing nozzle packet for a spinning head of a spinning machine for spinning endless thread from a viscous spinning liquid under high pressure, consisting of a nozzle pot, in which a nozzle plate is inserted and covered by a filter packet, a piston-like pressure piece that can move axially in the nozzle pot central channel, the upper surface of which adjoins the lower surface of a distributor block which has at least one channel, an upper seal between the pressure piece and the distributor block, a middle seal for sealing the space above the filter pack from the nozzle cup and a lower flat one Ring seal to seal the nozzle cup downwards.
Ein solches selbstdichtendes Düsenpaket und seine Wirkungsweise sind aus der der US-A-4 494 921, EP-A2-0 300 120 und der EP-B1-0 163 248 bekannt. Dieses bekannte Düsenpaket kann zwischen der Düsenplatte und dem Filterpaket auch noch eine Verteilerplatte (Lochplatte) aufweisen, welche nach oben topfartig ausgebildet ist zur Aufnahme des Filterpaketes (EP-B1-0 163 248; Pos.27).Such a self-sealing nozzle package and its mode of operation are known from US-A-4,494,921, EP-A2-0 300 120 and EP-B1-0 163 248. This known nozzle package can also have a distributor plate (perforated plate) between the nozzle plate and the filter package, which is pot-like at the top is designed to hold the filter package (EP-B1-0 163 248; Item 27).
Dieses bekannte Düsenpaket ist teuer und kompliziert im Aufbau und führte beim betrieblichen Einsatz zu erheblichen Problemen und Schwierigkeiten. Durch die obere Dichtung wurde ein Spalt zwischen der oberen Fläche des Druckstückes und der unteren Fläche des Verteilerblockes gebildet. Durch hohen Schmelzedruck, hohen Anpreßdruck und hohe Schmelzetemperaturen fand ein allmähliches Verformen und Schwinden der Dichtung durch Fließen des Dichtungsmaterials in diesen Spalt statt. Hierdurch bildete sich ein Totraum, in welchem es wegen der hohen Verweilzeit der Schmelze zum Polymerabbau kam. Darüberhinaus traten an dieser Stelle immer wieder Undichtigkeiten auf. Dieselben Probleme, nämlich Verformung und Reißen der Dichtung, Bildung von Toträumen (Totwasserzonen), Polymerabbau und Undichtigkeit, traten insbesondere auch an der Metallmembrandichtung (die zudem aufwendig in der Herstellung ist) und demzufolge auch an der unteren Dichtung auf. Insgesamt hat dieses bekannte Düsenpaket also drei, davon zwei unzulängliche, Dichtungen, wovon eine, die Metallmembrandichtung, relativ teuer ist. Ein weiterer Nachteil bestand darin, daß durch die Membrandichtung unterhalb derselben ein relativ großer Freiraum gebildet wurde, der zu einer unerwünschten langen Verweilzeit der Spinnflüssigkeit, insbesondere bei niedrigen Fadentitern, führte, die eine unerwünschte Veränderung derselben, Polymerabbau und dergleichen zur Folge hatte.This known nozzle package is expensive and complicated in construction and led to considerable problems and difficulties in operational use. A gap was formed between the upper surface of the pressure piece and the lower surface of the distributor block by the upper seal. Due to high melt pressure, high contact pressure and high melt temperatures, the seal was gradually deformed and shrunk by flowing the seal material into this gap. This created a dead space in which polymer degradation occurred due to the high residence time of the melt. In addition, leaks always occurred at this point. The same problems, namely deformation and tearing of the seal, formation of dead spaces (dead water zones), polymer degradation and leakage, also occurred in particular on the metal membrane seal (which is also complex to manufacture) and consequently also on the lower seal. In total, this known nozzle package has three, two of which are inadequate seals, one of which, the metal membrane seal, is relatively expensive. Another disadvantage was that a relatively large free space was formed by the membrane seal below it, which led to an undesirably long dwell time of the spinning liquid, especially at low thread titers, which resulted in an undesirable change in the same, polymer degradation and the like.
Der vorliegenden Erfindung lag daher die Aufgabe zugrunde, ein gattungsgemäßes selbstdichtendes Düsenpaket zur Verfügung zu stellen, das die zuvor genannten Nachteile nicht mehr aufweist, das insbesondere zuverlässig selbstdichtend und damit betriebssicherer ist, das einfacher im Aufbau und damit billiger ist und das oberhalb des Filterpaketes einen kleineren Freiraum aufweist, der zu einer Verringerung dar Verweilzeit der Spinnflüssigkeit in diesem Bereich führt. Eine Teilaufgabe bestand darin, auch bei Verwendung einer Verteilerplatte (Lochplatte), eine Vergrößerung der Filterfläche des Filterpaketes erreichen zu können.The present invention was therefore based on the object of providing a generic self-sealing nozzle package which no longer has the disadvantages mentioned above and which is particularly reliable is self-sealing and therefore more reliable, is simpler in construction and therefore cheaper, and has a smaller free space above the filter package, which leads to a reduction in the dwell time of the spinning liquid in this area. One part of the task was to be able to increase the filter area of the filter pack even when using a distributor plate (perforated plate).
Diese Aufgabe wurde bei dem selbstdichtenden Düsenpaket der eingangs beschriebenen Art erfindungsgemäß dadurch gelöst, daß die obere Dichtung rohrförmig ausgebildet ist, einen Innendurchmesser aufweist, der dem Durchmesser des zentralen Kanals des Druckstückes bzw. des Kanals des Verteilerblockes entspricht, und sich in beide Kanäle erstreckt, daß die obere Fläche des Druckstückes unter Betriebsbedingungen an der unteren Fläche des Verteilerblockes fest anliegt, daß das Druckstück nach unten topfartig ausgebildet ist zur Aufnahme des Filterpaketes und ggf. einer Verteilerplatte und daß die mittlere Dichtung ebenfalls rohrförmig ausgebildet ist und den Ringspalt zwischen dem Düsentopf und dem Rand der topfartigen Ausbildung des Druckstückes überdeckt und abdichtet.This object was achieved according to the invention in the self-sealing nozzle package of the type described at the outset in that the upper seal is tubular, has an inside diameter which corresponds to the diameter of the central channel of the pressure piece or the channel of the distributor block, and extends into both channels, that the upper surface of the pressure piece is firmly attached to the lower surface of the distributor block under operating conditions, that the pressure piece is designed like a pot downwards to receive the filter pack and possibly a distributor plate and that the middle seal is also tubular and the annular gap between the nozzle cup and covers and seals the edge of the pot-like configuration of the pressure piece.
Das der Erfindung zugrundeliegende Lösungsprinzip besteht also darin, das im Düsentopf bewegliche Druckstück so auszugestalten, daß oben zwischen dem Druckstück und dem Verteilerblock und unten zwischend dem Druckstück und dem Düsentopf bzw. der Verteilerplatte Ringspalten gebildet werden, die sich zunächst radial von innen nach außen erstrecken, wobei sich die weite der Ringspalten (Spaltweite) bei betrieblicher Nutzung ggf. ändert, und daß diese Ringspalten mit je einer rohrförmigen Dichtung überdeckt werden, so daß durch die unter Druck stehende Spinnfüssigkeit die Dichtungen radial nach außen auf die Ringspalte gedrückt werden und somit eine fluiddichte Abdichtung bewirken. Es muß als überraschend angesehen werden, daß, selbst wenn durch eine axiale Bewegung des kolbenartigen Druckstückes im Düsentopf die Ringspalte sich vergrößern oder verkleinern, keine Undichtigkeiten auftreten, selbst dann nicht, wenn der Spinnflüssigkeitsdruck mehrfach erhöht und wieder abgesenkt wird und das Druckstück hierdurch wiederholt axial hin und her in der Regel also auf und ab bewegt wird.The principle of the solution on which the invention is based consists in designing the pressure piece movable in the nozzle pot in such a way that annular gaps are formed at the top between the pressure piece and the distributor block and between the pressure piece and the nozzle pot or the distributor plate at the bottom, which initially extend radially from the inside to the outside , the width of the annular gaps (gap width) possibly changing during operational use, and that this Annular gaps are each covered with a tubular seal, so that the seals are pressed radially outward onto the annular gap by the pressurized spinning liquid and thus effect a fluid-tight seal. It must be regarded as surprising that, even if the annular gaps enlarge or reduce due to an axial movement of the piston-like pressure piece in the nozzle pot, no leaks occur, even if the spinning fluid pressure is increased and decreased again and the pressure piece is thereby repeatedly axially caused back and forth is usually moved up and down.
In besonders bevorzugter Ausgestaltung ist die mittlere, rohrförmige Dichtung der nach oben und/oder unten weisende Schenkel einer Dichtung mit L-förmigem Querschnitt (Winkeldichtung). Die mittlere, rohrförmige Dichtung, also auch die Winkeldichtung, kann hierbei oberhalb der Düsenplatte angeordnet sein, wobei sich der obere Teil der Dichtung bzw. der nach oben weisende Schenkel der Winkeldichtung in die topfartige Ausbildung des Druckstückes erstreckt, also in die topfartige Ausbildung des Druckstückes hineinragt.In a particularly preferred embodiment, the middle, tubular seal is the upward and / or downward leg of a seal with an L-shaped cross section (angled seal). The middle, tubular seal, thus also the angled seal, can be arranged above the nozzle plate, the upper part of the seal or the upwardly pointing leg of the angled seal extending into the pot-like configuration of the pressure piece, i.e. into the pot-like configuration of the pressure piece protrudes.
Ein wesentlicher Aspekt der Erfindung besteht darin, daß die dichtende Wirkung der oberen und mittleren, rohrförmig ausgebildeten, Dichtungen bzw. des nach oben und/oder unten weisenden Schenkels der Winkeldichtung, dadurch erreicht wird, daß die Dichtungen durch den hohen Druck der Spinnflüssigkeit (beispielsweise 50 bis 80 bar) radial nach außen gedrückt und dabei geringstfügig aufgeweitet werden. Ein weiterer wesentlicher Aspekt ist, daß die Membrandichtung nicht mehr erforderlich ist und bei Verwendung einer Winkeldichtung nur noch zwei statt wie bisher drei Dichtungen benötigt werden, da der nach oben und/oder unten weisende Schenkel der Winkeldichtung die Abdichtfunktion der Membrandichtung ausübt. Hieraus ergibt sich zudem, daß der Raum oberhalb des Filterpaketes nunmehr wesentlich kleiner bemessen werden kann. Der sich daraus ergebende Vorteil, nämlich geringere Verweilzeit der Spinnflüssigkeit, wurde zuvor bereits erläutert.An important aspect of the invention is that the sealing effect of the upper and middle, tubular seals, or the upward and / or downward leg of the angular seal, is achieved in that the seals by the high pressure of the spinning liquid (for example 50 to 80 bar) are pressed radially outwards and slightly expanded. Another important aspect is that the membrane seal is no longer necessary and when using an angled seal only two instead of three seals are required, as the upward and / or downward leg of the angled seal performs the sealing function of the membrane seal. This also means that the space above the filter package can now be made much smaller. The resultant advantage, namely shorter residence time of the spinning liquid, has already been explained.
Im übrigen erfolgt die selbstabdichtende Wirkung bei dem erfindungsgemäßen Düsenpaket auf die gleiche Art und Weise wie bei dem bekannten. Auch hierbei erfolgt bei einem Druckaufbau in dem Raum oberhalb des Filterpaketes eine hier allerdings geringfügige Bewegung des Druckstückes innerhalb des Düsentopfes um nur wenige zehntel Millimeter nach oben, bis die obere Fläche des Druckstückes fest an der unteren Fläche des Verteilerblockes anliegt. Nach unten wirkt der Druck in der Weise, daß das Filterpaket bzw. - falls vorhanden - die Verteilerplatte (Lochplatte) oder die Düsenplatte auf die untere, flache Ringdichtung gedrückt wird, die im Falle einer Winkeldichtung durch den radial nach innen weisenden Schenkel der Winkeldichtung gebildet wird.Otherwise, the self-sealing effect takes place in the nozzle package according to the invention in the same way as in the known one. Here, too, when the pressure builds up in the space above the filter pack, the pressure piece moves slightly within the nozzle pot by only a few tenths of a millimeter until the upper surface of the pressure piece lies firmly against the lower surface of the distributor block. The pressure acts downwards in such a way that the filter pack or - if available - the distributor plate (perforated plate) or the nozzle plate is pressed onto the lower, flat ring seal which, in the case of an angular seal, is formed by the radially inward leg of the angular seal becomes.
In Ausgestaltung der Erfindung ist die wahlweise einsetzbare Lochplatte nicht nach oben topfartig ausgebildet, sondern auch oben flach. Dies führt zu einer nennenswerten Vergrößerung der Filterfläche des Filterpaketes, die beispielsweise ca. 25 % betragen kann, da hierbei der Außendurchmesser des Filterpaketes dem Innendurchmesser des Düsentopfes im unteren Bereich entspricht.In an embodiment of the invention, the perforated plate, which can be used optionally, is not pot-shaped at the top, but is also flat at the top. This leads to an appreciable increase in the filter area of the filter pack, which can be, for example, approximately 25%, since the outer diameter of the filter pack corresponds to the inner diameter of the nozzle cup in the lower region.
Das Filterpaket kann die üblichen, dem Stand der Technik entsprechenden Mittel wie Siebe mit unterschiedlicher Maschengröße, Filtergranulat, beispielsweise Sand, mit unterschiedlicher Korngröße, Scheiben aus gesinterten Werkstoffen usw. aufweisen. Bei der Verwendung von losem Filtergranulat wird die Verteilerplatte zweckmäßigerweise oben mit einer schmalen Umrandung versehen, deren Höhe der Schütthöhe der Filtergranulatschicht entspricht. Seine Ausgestaltung hinsichtlich Aufbau, Höhe, Auswahl der Filtermittel usw. richtet sich nach der Art der viskosen Spinnflüssigkeit, bei der es sich um die Schmelze thermoplastischer Polymere wie Polyester, Polyamid usw., um eine Lösung, wie Polyacrylnitril in Lösung mit DMF, und andere handeln kann.The filter pack can have the usual means corresponding to the state of the art, such as sieves with different mesh sizes, filter granules, for example sand, with different grain sizes, disks made of sintered materials, etc. When using loose filter granules, the distributor plate is expediently provided with a narrow border at the top, the height of which corresponds to the bed height of the filter granulate layer. Its design with regard to structure, height, selection of filter media, etc. depends on the type of viscous spinning liquid, which is the melt of thermoplastic polymers such as polyester, polyamide, etc., a solution, such as polyacrylonitrile in solution with DMF, and others can act.
Als Werkstoff für die Dichtungen hat sich insbesondere Weichaluminium bestens bewährt, jedoch sind auch Weicheisen und andere gut verformbare Werkstoffe geeignet. Geeignete Werkstoffe sind solche, die auch den ggf. hohen Temperaturen der Spinnflüssigkeit, die bei Polymerschmelzen beispielsweise bis zu 450°C betragen kann, dauerhaft standhalten.In particular, soft aluminum has proven to be the best material for the seals, but soft iron and other easily deformable materials are also suitable. Suitable materials are those that can withstand the high temperatures of the spinning liquid, which can be up to 450 ° C, for example, in the case of polymer melts.
Der zentrale Kanal im Druckstück kann auf seiner gesamten Länge den gleichen Durchmesser bzw. Querschnitt aufweisen, aber auch einen im Strömungsrichtung sich erweiternden oder sich verkleinernden Durchmesser bzw. Querschnitt, also Konusform, haben. Insbesondere kann in dem Kanal des Druckstückes ein Mischelement, vorzugsweise ein sog. statischer Mischer, angeordnet sein.The central channel in the pressure piece can have the same diameter or cross-section over its entire length, but can also have a diameter or cross-section that widens or decreases in the flow direction, that is to say it has a conical shape. In particular, a mixing element, preferably a so-called static mixer, can be arranged in the channel of the pressure piece.
Die Befestigung des Düsentopfes am Verteilerblock kann mit üblichen Mitteln wie Schrauben oder auf andere Weise erfolgen. Als besonders vorteilhaft hat sich die an sich bekannte Verbindung mit Hilfe eines mehrgängigen Gewindes erwiesen, das am äußeren Umfang des unteren Teils des Verteilerblockes und als damit zusammenwirkendes Gegenstück am inneren Umfang des oberen Teils des Düsentopfes angeordnet ist. Hierbei ist es möglich, eine ausreichende dauerhafte Befestigung des Düsentopfes bereits mit einer Drehung von nur 180° oder allenfalls 360° desselben zu erreichen. Wichtig dabei ist, die Steigung des Gewindes so gering zu bemessen, daß eine Selbsthemmung gegen selbständiges Lösen dieser Schraubverbindung erreicht wird. Andernfalls ist eine andere Sicherung gegen Verdrehung, beispielsweise ein Sicherungsstift, vorzusehen.The nozzle cup can be attached to the distributor block using conventional means such as screws or in some other way. In itself, this has proven to be particularly advantageous known connection using a multi-start thread, which is arranged on the outer circumference of the lower part of the distributor block and as a cooperating counterpart on the inner circumference of the upper part of the nozzle pot. It is possible to achieve a sufficient permanent attachment of the nozzle cup with a rotation of only 180 ° or at most 360 ° of the same. It is important to dimension the pitch of the thread so small that self-locking against loosening of this screw connection is achieved. Otherwise, another protection against rotation, for example a locking pin, must be provided.
Die Form und die Abmessungen des Düsenpaketes und seiner Teile unterliegen keinen Beschränkungen - weder nach oben, noch nach unten - und werden den jeweiligen Erfordernissen angepaßt.The shape and dimensions of the nozzle package and its parts are not subject to any restrictions - neither upwards nor downwards - and are adapted to the respective requirements.
Ein weiterer wesentlicher Vorteil beim erfindungsgemäßen Düsenpaket besteht darin, daß seine selbstdichtende Wirkung auch nach einem mehrmaligen völligen - gewollten oder ungewollten - Druckabfall oder Druckabbau immer wieder zuverlässig eintritt.Another significant advantage of the nozzle package according to the invention is that its self-sealing effect always occurs reliably even after repeated complete - intentional or unwanted - pressure drop or pressure reduction.
Die Erfindung wird nachfolgend an Hand der Figuren näher erläutert. Es zeigt in z.T. vereinfachter Darstellungweise:
Figur 1- eine besonders bevorzugte Ausführungsform des Düsenpaketes im Längsschnitt,
Figur 2- eine Ausführungsform des Druckstückes im Längsschnitt,
Figur 3 bis 7- weitere Ausführungsformen des Düsenpaketes im Längsschnitt,
Figur 8- eine doppelte Winkeldichtung im Längsschnitt.
- Figure 1
- a particularly preferred embodiment of the nozzle package in longitudinal section,
- Figure 2
- an embodiment of the pressure piece in longitudinal section,
- Figure 3 to 7
- further embodiments of the nozzle package in longitudinal section,
- Figure 8
- a double angular seal in longitudinal section.
In den Figuren bezeichnen folgende Positionszahlen folgende Teile:
- 1
- Düsentopf
- 2
- Düsenplatte
- 3
- Filterpaket
- 4
- Druckstück
- 5
- Obere Fläche des Druckstückes
- 6
- Topfartige Ausbildung des Druckstückes
- 7
- Raum oberhalb des Filterpaketes
- 8
- Verteilerblock
- 9
- Untere Fläche des Verteilerblockes
- 10
- Obere Dichtung
- 11
- Verteilerplatte; Lochplatte
- 12
- Zentraler Kanal des Druckstückes
- 13
- Winkeldichtung
- 14
- Axial nach oben und/oder unten weisender Schenkel der Winkeldichtung; mittlere Dichtung
- 15
- Radial nach innen weisender Schenkel der Winkeldichtung; untere Dichtung
- 16
- Ringspalt
- 17
- Mehrgängiges Gewinde
- 18
- Düsenöffnungen
- 19
- Kanal des Verteilerblockes
- 20
- Rand der topfartigen Ausbildung des Druckstückes
- 21
- Montagebohrungen
- 22
- Erweiterung des
Kanals 12
- 1
- Nozzle pot
- 2nd
- Nozzle plate
- 3rd
- Filter pack
- 4th
- Pressure piece
- 5
- Upper surface of the pressure piece
- 6
- Pot-shaped formation of the pressure piece
- 7
- Space above the filter package
- 8th
- Distribution block
- 9
- Lower surface of the distributor block
- 10th
- Upper seal
- 11
- Distributor plate; Perforated plate
- 12th
- Central channel of the pressure piece
- 13
- Angular seal
- 14
- Leg of the angular seal pointing axially upwards and / or downwards; medium seal
- 15
- Radially inward leg of the angled seal; lower seal
- 16
- Annular gap
- 17th
- Multi-start thread
- 18th
- Nozzle openings
- 19th
- Channel of the distribution block
- 20th
- Edge of the pot-like formation of the pressure piece
- 21
- Mounting holes
- 22
- Extension of
channel 12
Mit einfachen Mitteln und Versuchen ist es möglich, auch eine geeignete Ausführungsform des Düsenpaketes zu konstruieren und zu ermitteln, bei welcher die Winkeldichtung 13 anders herum, also mit dem axialen Schenkel 14 nach unten weisend, eingebaut werden kann.With simple means and tests, it is also possible to construct and determine a suitable embodiment of the nozzle package, in which the
In Figur 2 ist eine Ausführungsform des Druckstückes 4 dargestellt. Die Teile 5; 6; 7; 10; 12 und 20, die bereits oben zu Figur 1 erläutert wurden, werden hier nicht nochmals aufgezählt und beschrieben. Mit 21 ist eine von beispielsweise drei Bohrungen bezeichnet, die eine Festlegung des Druckstückes 4 während des Einlegens des Filterpaketes (3) und ggf. der Verteilerplatte (11) durch eine entsprechende Anzahl von auf einer Unterlage angeordneten Stiften erleichtern. Zu diesem Zweck wird das Druckstück 4 verkehrt herum, also mit der Fläche 5 nach unten, angeordnet. Der Kanal 12 weist in seinem oberen Endabschnitt die Erweiterung 22 zur Aufnahme des unteren Teils der Dichtung 10 auf.In Figure 2, an embodiment of the
Die in Figur 3 dargestellte Ausführungsform unterscheidet sich von der in Figur 1 dargestellten Ausführungsform lediglich dadurch, daß die mittlere, rohrförmige Dichtung 14 und die untere, flache Dichtung 15 nicht Teile einer Winkeldichtung sind. Die untere, flache Dichtung 15 ist hierbei unterhalb der Düsenplatte 2 angeordnet. Da alle übrigen Teile mit den in Figur 1 dargestellten Teilen identisch sind, wird auf eine weitergehende Beschreibung dieser Ausführungsform verzichtet.The embodiment shown in FIG. 3 differs from the embodiment shown in FIG. 1 only in that the central,
Die in den Figuren 4 bis 7 dargestellten Ausführungsformen unterscheiden sich im wesentlichen lediglich durch die Ausgestaltung des Druckstückes 4 und, soweit vorhanden, der Lochplatte 11 sowie der Ausgestaltung und Anordnung der Dichtungen 14 und 15. Alle übrigen Teile sind daher nur dann mit Positionszahlen versehen, wenn sie in der nachfolgenden Beschreibung genannt werden. In den Figuren 5 bis 7 sind zudem die oberen Teile und das Filterpaket (3) weggelassen. Eine weitergehende Beschreibung dieser Figuren als die nachfolgende erübrigt sich im Hinblick auf die Beschreibung der Figuren 1 bis 3.The embodiments shown in FIGS. 4 to 7 essentially differ only in the design of the
In Figur 4 ist eine Ausführungsform dargestellt, bei welcher keine Verteilerplatte (11) verwendet wird, so daß das Filterpaket 3 direkt auf der Düsenplatte 2 aufliegt. Die mittlere, rohrförmige Dichtung 14 und die untere, flache Dichtung 15 werden hierbei wieder durch die Schenkel einer Winkeldichtung 13 gebildet. Diese ist bei dieser Ausführungsform unterhalb der Düsenplatte 2 angeordnet.FIG. 4 shows an embodiment in which no distributor plate (11) is used, so that the
Bei der in Figur 5 dargestellten Ausführungsform ist die mittlere, rohrförmige Dichtung 14 oberhalb der Verteilerplatte 11 angeordnet, die untere, flache Dichtung 15 zwischen der Verteilerplatte 11 und der Düsenplatte 2. Die Verteilerplatte 11 ist hierbei oben nicht flach, sondern topfartig - beispielsweise zur Aufnahme von Filtergranulat wie Sand o.dgl. - ausgebildet. Die mittlere, rohrförmige Dichtung 14 ragt in den topfartigen Teil der Verteilerplatte 11 und des Druckstückes 4 hinein und liegt an der Innenfläche des "Topfrandes" an. Gut zu erkennen ist der Ringspalt 16 zwischen dem unteren Rand der topfartigen Ausbildung des Druckstückes 4 und dem oberen Rand der topfartigen Ausbildung der Verteilerplatte 11, der von der mittleren, rohrförmigen Dichtung 14 überdeckt wird, selbst dann, wenn er sich durch die Bewegung des Druckstückes 4 nach oben, beispielsweise auf die doppelte Weite, vergrößern sollte.In the embodiment shown in FIG. 5, the middle,
Die in Figur 6 dargestellte Ausführungsform entspricht im wesentlichen der in Figur 5 dargestellten, wobei hier jedoch die mittlere, rohrförmige Dichtung 14 in je einer Ringnut angeordnet ist, die am unteren Ende der topfartigen Ausbildung des Druckstückes 4 und am oberen Ende der topfartigen Ausbildung der Verteilerplatte 11 angeordnet ist.The embodiment shown in Figure 6 corresponds essentially to that shown in Figure 5, but here the central,
Die in Figur 7 dargestellte Ausführungsform entspricht im wesentlichen der in Figur 5 dargestellten. Bei dieser Ausführungsform verläuft der von der mittleren, rohrförmigen Dichtung 14 überdeckte radial nach außen führende Ringspalt 16 jedoch nicht horizontal wie bei den zuvor beschriebenen Ausführungsformen, sondern schräg nach oben. Genausogut könnte er schräg nach unten verlaufen. Die Dichtwirkung wird hierdurch nicht beeinträchtig.The embodiment shown in FIG. 7 essentially corresponds to that shown in FIG. In this embodiment, however, the radially outwardly leading
Figur 8 zeigt eine doppelte Winkeldichtung im Längsschnitt, durch welche die mittlere, rohrförmige Dichtung 14 sowohl durch den nach oben als auch durch den nach unten weisenden Schenkel 14a bzw. 14b gebildet wird. Die untere, flache Dichtung 15 wird auch hierbei wie bei einer einfachen Winkeldichtung durch den nach innen weisenden Schenkel gebildet. Mit einfachen Mitteln und Versuchen ist es möglich, eine geeignete Ausführungsform des Düsenpaketes zu konstruieren, bei welcher diese doppelte Winkeldichtung erfolgreich eingesetzt werden kann.FIG. 8 shows a double angular seal in longitudinal section, through which the central,
Claims (4)
- A self-sealing nozzle unit for a spinning head of a spinning machine for spinning endless threads from a viscous spinning liquid under high pressure, consisting of a nozzle pot (1), into which a nozzle plate (2) is incorporated and which is covered by a filter pack (3), a piston-like pressure piece (4) that is axially movable in the nozzle pot and has a central channel (12), the upper surface of which is adjacent to the lower surface of a manifold block (8) having at least one channel, an upper seal (10) between the pressure piece and the manifold block, a central seal (14) for sealing the space above the filter pack with respect to the nozzle pot, and a lower flat annular seal (15) for sealing the nozzle pot at the bottom, characterised in that the upper seal (10) is tubular, has an internal diameter that corresponds to the diameter of the central channel of the pressure piece or the channel of the manifold block and extends into both channels, that the upper surface of the pressure piece (4) lies closely against the lower surface of the manifold block under operating conditions, that the pressure piece (4) is pot-shaped at the bottom in order to accommodate the filter pack (3) and optionally a manifold plate (11), and that the central seal (14) is also tubular and covers and seals the annular gap between the nozzle pot and the edge of the pot-like form of the pressure piece.
- A nozzle unit according to claim 1, characterised in that the central, tubular seal (14) is the arm, pointing upwards and/or downwards, of a seal having an L-shaped cross-section.
- A nozzle unit according to claim 1 or 2, characterised by a manifold plate (11) that is flat at the top and is arranged above the nozzle plate and below the filter pack.
- A nozzle unit according to at least one of claims 1 to 3, characterised by a static mixing element arranged in the channel of the pressure piece.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4140269 | 1991-12-06 | ||
DE4140269 | 1991-12-06 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0545375A2 EP0545375A2 (en) | 1993-06-09 |
EP0545375A3 EP0545375A3 (en) | 1993-12-08 |
EP0545375B1 true EP0545375B1 (en) | 1995-11-15 |
Family
ID=6446445
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92120531A Expired - Lifetime EP0545375B1 (en) | 1991-12-06 | 1992-12-02 | Self-sealing spinneret pack |
Country Status (6)
Country | Link |
---|---|
US (1) | US5387097A (en) |
EP (1) | EP0545375B1 (en) |
KR (1) | KR930013231A (en) |
CN (1) | CN1031655C (en) |
DE (2) | DE4236570A1 (en) |
TW (1) | TW224147B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10014292B4 (en) * | 2000-03-23 | 2008-04-03 | Lurgi Zimmer Gmbh | Self-sealing sand filter nozzle |
DE102007034092A1 (en) | 2007-07-21 | 2009-01-22 | Oerlikon Textile Gmbh & Co. Kg | Melt-spinning device for synthetic filaments has inside diameter of inner wall of sealing sleeve continuously reducing in region of second and third section of wall |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19643425C2 (en) * | 1996-10-22 | 1999-12-02 | Geb Schroeder Beeck | Sandless spinneret |
DE19821406A1 (en) * | 1998-05-13 | 1999-11-18 | Lurgi Zimmer Ag | Sealing element for melt channels |
KR100302319B1 (en) * | 1999-07-06 | 2001-09-22 | 홍덕희 | nozzle pack for heat-melting emission apparatus |
DE19935982A1 (en) * | 1999-07-30 | 2001-02-01 | Lurgi Zimmer Ag | Self-sealing compact nozzle for melt spinning processes |
JP2005504191A (en) * | 2001-09-28 | 2005-02-10 | ザウラー ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト | Spinning nozzle |
DE10160204B4 (en) * | 2001-12-07 | 2006-01-26 | Zimmer Ag | Nozzle block with a support plate |
DE10205465A1 (en) * | 2002-02-08 | 2003-08-28 | Zimmer Ag | Nozzle block for the production of synthetic threads and fibers |
DE10314294A1 (en) | 2003-03-29 | 2004-10-07 | Saurer Gmbh & Co. Kg | Device for melt spinning |
CN100368606C (en) * | 2005-11-14 | 2008-02-13 | 中国石化仪征化纤股份有限公司 | Bolt fastening type high-productivity compact top-mounted spinning assembly |
JP5452243B2 (en) * | 2010-01-19 | 2014-03-26 | Tmtマシナリー株式会社 | Spin pack for melt spinning equipment |
DE102013014568A1 (en) | 2012-09-26 | 2014-03-27 | Oerlikon Textile Gmbh & Co. Kg | Nozzle package for melt spinning of synthetic filaments used in production of multifilament yarns, has nozzle and perforated plates forming parting line having star-shaped radial grooves so that the orifice opens centrally to the line |
DE102014000305A1 (en) * | 2014-01-10 | 2015-07-16 | Oerlikon Textile Gmbh & Co. Kg | Spinnerette |
CN108411387A (en) * | 2018-04-20 | 2018-08-17 | 中国纺织科学研究院有限公司 | Melt spinning apparatus |
CN109234824B (en) * | 2018-09-20 | 2020-03-03 | 深圳市恩裳纺织品有限公司 | Spinning process of regenerated polyester fiber |
CN108866663B (en) * | 2018-09-20 | 2020-01-21 | 杭州金象纺织有限公司 | Spinning device for regenerated polyester fibers |
CN115233321A (en) * | 2021-04-23 | 2022-10-25 | 江苏金斗重工有限公司 | Lyocell fiber spinning machine melt distribution beam |
Family Cites Families (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3123858A (en) * | 1964-03-10 | Heated | ||
DE155090C (en) * | ||||
GB755954A (en) * | 1953-08-28 | 1956-08-29 | Ici Ltd | Melt-spinning method and apparatus |
NL235774A (en) * | 1956-05-14 | |||
US3050774A (en) * | 1957-09-03 | 1962-08-28 | Du Pont | Spinneret assembly |
US3028627A (en) * | 1959-04-10 | 1962-04-10 | Du Pont | Spinneret pack assembly |
US3237245A (en) * | 1962-10-10 | 1966-03-01 | Mitsubishi Vonnel Co Ltd | Apparatus for the production of conjugated artificial filaments |
GB1079295A (en) * | 1964-06-03 | 1967-08-16 | Ici Ltd | Improvements in or relating to the melt-spinning of synthetic linear polymers |
NL6500067A (en) * | 1965-01-06 | 1966-07-07 | ||
CH432711A (en) * | 1965-03-03 | 1967-03-31 | Inventa Ag | Device for spinning threads made of synthetic material |
DE1660209A1 (en) * | 1965-07-15 | 1970-02-05 | Barmag Barmer Maschf | Melt spinning head for spinning under high pressure |
CH445840A (en) * | 1966-04-09 | 1967-10-31 | Barmag Barmer Maschf | Device on an extrusion press for sealing the connection point between a feed element and a tool or tool chuck |
NL6703657A (en) * | 1967-03-09 | 1968-09-10 | ||
US3466703A (en) * | 1967-08-11 | 1969-09-16 | Du Pont | Spinneret assembly |
US3762854A (en) * | 1970-04-08 | 1973-10-02 | Akzona Inc | Melt spinning apparatus |
DE2250837A1 (en) * | 1972-10-17 | 1974-05-02 | Zimmer Ag | Spinnerette filter chamber - filled with coarse material to a height at least twice chamber diameter |
US4197020A (en) * | 1972-11-30 | 1980-04-08 | E. I. Du Pont De Nemours And Company | Spinning pack containing mixing means |
US4134954A (en) * | 1975-07-19 | 1979-01-16 | Bayer Aktiengesellschaft | Spinning process and device with static mixing inserts |
US4260350A (en) * | 1980-04-16 | 1981-04-07 | Fiber Industries, Inc. | Filter for high viscosity liquids |
DD155090A1 (en) * | 1980-12-08 | 1982-05-12 | Reinhard Wagner | SPINNDUESEN PACKAGE FOR SPANISHING FOOD, ESPECIALLY FOR MELTING SPIRIT OF SYNTHETIC HIGH POLYMERS |
US4493628A (en) * | 1982-07-15 | 1985-01-15 | Barmag Barmer Maschinenfabrik Ag | Melt spinning apparatus |
EP0300120B1 (en) * | 1983-03-23 | 1992-05-06 | B a r m a g AG | Spinnerette for melt-spinning filaments |
US4494921A (en) * | 1983-08-08 | 1985-01-22 | E. I. Du Pont De Nemours And Company | Filter element |
JPS60119208A (en) * | 1983-11-28 | 1985-06-26 | Toray Ind Inc | Spinneret pack for melt spinning |
DE3575313D1 (en) * | 1984-05-26 | 1990-02-15 | Barmag Barmer Maschf | SPINNING BAR FOR MELT SPINNING SYNTHETIC THREADS. |
US4696633A (en) * | 1984-05-26 | 1987-09-29 | Barmag Ag | Melt spinning apparatus |
DE3642867A1 (en) * | 1986-12-16 | 1988-06-30 | Barmag Barmer Maschf | SPINNING MACHINE |
EP0387470B1 (en) * | 1989-03-17 | 1994-06-08 | Karl Fischer Industrieanlagen Gmbh | Apparatus for spinning thermoplastic melts |
DE3915819A1 (en) * | 1989-05-16 | 1990-11-22 | Akzo Gmbh | Making high grade core-sheath fibre yarn |
KR930012184B1 (en) * | 1989-11-27 | 1993-12-24 | 바마크 악티엔 게젤샤프트 | Melt-spinning apparatus |
GB9010024D0 (en) * | 1990-05-03 | 1990-06-27 | Pall Corp | Filters for polymer spinnerets and their manufacture |
DE4239560C2 (en) * | 1992-11-25 | 2003-04-30 | Zimmer Ag | nozzle block |
-
1992
- 1992-10-29 DE DE4236570A patent/DE4236570A1/de not_active Withdrawn
- 1992-11-30 KR KR1019920022800A patent/KR930013231A/en not_active Application Discontinuation
- 1992-12-02 EP EP92120531A patent/EP0545375B1/en not_active Expired - Lifetime
- 1992-12-02 DE DE59204347T patent/DE59204347D1/en not_active Expired - Fee Related
- 1992-12-05 CN CN92114129A patent/CN1031655C/en not_active Expired - Fee Related
- 1992-12-07 US US07/986,298 patent/US5387097A/en not_active Expired - Fee Related
-
1993
- 1993-01-14 TW TW082100197A patent/TW224147B/zh active
Non-Patent Citations (1)
Title |
---|
& JP-A-60 119 208 (TORAY KK) 26. Juni 1985 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10014292B4 (en) * | 2000-03-23 | 2008-04-03 | Lurgi Zimmer Gmbh | Self-sealing sand filter nozzle |
DE102007034092A1 (en) | 2007-07-21 | 2009-01-22 | Oerlikon Textile Gmbh & Co. Kg | Melt-spinning device for synthetic filaments has inside diameter of inner wall of sealing sleeve continuously reducing in region of second and third section of wall |
Also Published As
Publication number | Publication date |
---|---|
TW224147B (en) | 1994-05-21 |
CN1031655C (en) | 1996-04-24 |
EP0545375A2 (en) | 1993-06-09 |
KR930013231A (en) | 1993-07-21 |
DE59204347D1 (en) | 1995-12-21 |
CN1077505A (en) | 1993-10-20 |
EP0545375A3 (en) | 1993-12-08 |
DE4236570A1 (en) | 1993-06-09 |
US5387097A (en) | 1995-02-07 |
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