EP0292700A1 - Spiral fabric - Google Patents
Spiral fabric Download PDFInfo
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- EP0292700A1 EP0292700A1 EP88106379A EP88106379A EP0292700A1 EP 0292700 A1 EP0292700 A1 EP 0292700A1 EP 88106379 A EP88106379 A EP 88106379A EP 88106379 A EP88106379 A EP 88106379A EP 0292700 A1 EP0292700 A1 EP 0292700A1
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- European Patent Office
- Prior art keywords
- core
- core threads
- threads
- wire
- wires
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- 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.)
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/0027—Screen-cloths
- D21F1/0072—Link belts
Definitions
- the invention relates to a wire link belt, in particular for paper machines, composed of wires, namely of a plurality of adjacent and interlocking wire coils as well as optionally of plug wires coupling the wire coils and / or of cored wires sitting in the cavities formed by the wire coils, at least some of the wires consist of a core and a sheath surrounding the core.
- Wire link belts are described for example in DE-OS 24 19 751 and FR-OS 24 94 319. They are characterized in that a large number of flat wire coils interlock and are coupled by means of plug wires.
- filler materials in the form of wires or rods can be inserted into the cavities which are enclosed by the wire coils in order to reduce the air permeability of the wire link belts in accordance with the respective requirements.
- the cross section of the wire helices can be round, oval or a flat rectangle.
- DE-GM 86 23 879 describes a wire link belt in which the wire coils are formed from a core thread and a sheath that surrounds it.
- the core thread consists of one or more Monofilament or from a continuous yarn or a combination of different continuous yarns or from a combination of monofilament and continuous yarn.
- Polyester, polyacrylonitrile and polyamide are specified as materials.
- a coating made of thermosetting material is proposed, in which electrically highly conductive carbon is embedded.
- the thermosetting material is said to be particularly wear and hydrolysis resistant in order to give the wire link belt an extended service life.
- the carbon serves to discharge electrical charges.
- Synthetic resin in particular melamine, urea-formaldehyde, epoxy or phenolic resin and polyurethane are specified as materials.
- the wire coils inevitably have a circular cross section.
- other cross sections in particular flat wires, are also suitable for wire link belts.
- Such cross sections could be produced - as with the known wires without core thread - by extruding the sheathing with an appropriately shaped nozzle head.
- this solution would have the disadvantage that a relatively large part of the total cross-section would be formed by the material of the sheathing and the properties of the core thread would then hardly come into play.
- this would run counter to the goal of giving the wires special properties by using at least two different materials.
- the invention has for its object to construct the individual parts of a wire link belt, in particular the wire coils, but possibly also the plug-in wires and cored wires, in such a way that a wide variety of cross-sectional shapes can be realized in a simple manner and, moreover, great freedom in the choice and combination of materials is achieved becomes.
- the core consists of at least two parallel parallel core threads separated by the material of the sheath and the sheath is adapted to the cross section formed by the core threads.
- This training is based on the idea already belonging to the invention, the shape, d. H. to determine the cross-sectional shape of the wires by the number, the cross-section and the arrangement of the core threads.
- the sheathing is only intended to protect the core threads, but should not significantly influence the overall cross-section that they specify.
- the sheath is intended to completely encase the core threads in the manner of a skin and only to fill the spaces between the individual core threads. A relatively thin sheathing is then obtained, but this is sufficient for the resistance to hydrolysis and wear and also for the dimensional stability of the wires. Since the cross section of the wires is predominantly formed by the core threads themselves, their properties are decisive for the properties of the entire wire link belt.
- At least one of the core threads is designed as a spun fiber thread, multifilament thread or as a thread and this core thread or these core threads is or are impregnated with the material of the sheathing.
- all core threads can also be processed in this way. The advantage is that the cross section is then almost completely formed by the core threads, while the material of the sheath penetrates into the core threads themselves and in this way gives them dimensional stability.
- the core threads should be arranged next to one another in one plane.
- the core threads should be arranged next to one another in one plane.
- the wire is very adaptable. It is particularly suitable as a cored wire if it is made in oversize and then inserted. It then interlocks with the wire helices, which ensures high positional stability. The same applies to the use as a plug wire, because the head bends of the wire coils then dig into the plug wire, which also prevents slipping.
- the wires can also be used for the wire coils themselves if they have a contracting bias.
- the head bends of the wire coils are then compressed by this pretension, so that the distance between the individual turns of the wire coils and thus the air permeability are reduced. If a central core thread is provided with these additional core threads surrounding it, depending on the number of external core threads there is compressibility over the entire circumference.
- the core threads that are not on the outside or the core threads that are not on the outside can consist, for example, of metal and / or plastic as a monofilament, so that it is relatively hard and thus ensures high strength.
- Polyamide, polyacrylonitrile and / or polyester fibers or threads are suitable as materials for the core threads.
- very high-strength, temperature and chemical-resistant materials for the core threads such as aramid or polyphenylene sulfide fibers or threads.
- a wire link belt constructed in this way can then also be used at relatively high temperatures.
- combinations of different core threads are also possible.
- the shape of the wires can also be influenced by different diameters of the core threads. For example, if more than two core threads are provided, the outer core threads can have a smaller diameter than the inner core thread or have the inner core threads. If the core threads lie in one plane, an oval profile is created. However, there is also the possibility of providing the outer core threads with a larger diameter than the inner ones and thereby producing a type of bone shape.
- the wire link belt (1) shown in Figure (1) consists of a large number of flat wire coils, which overlap with one another with their head arches - for example designated (6) in such a way that channels for the insertion of plug wires (7, 8, 9 ) are formed, via which the individual wire helices (2, 3, 4, 5) are coupled together.
- Cored wires (14) are inserted into the cavities (10, 11, 12, 13) formed by the straight winding legs of the wire helices (2, 3, 4, 5), only one of which is shown here. With these cored wires (14) can significantly reduce the permeability of the wire link belt (1), which is particularly desirable for use in dryer fabrics in paper machines.
- wires are shown, both for use as wire coils (2, 3, 4, 5), as well as for use as plug wires (7, 8, 9) or as Fill wires (14) come into question.
- the wires are explained in detail below.
- the wire (15) shown in FIG. (3) consists of two core threads (16, 17) running parallel to one another in one plane and a sheath (18). As can be seen, this creates a flat wire (15).
- Such a wire (15) is particularly suitable for use as a wire helix or as a cored wire.
- a central core thread (20) is surrounded by three parallel core threads (21, 22, 23) arranged at an angular distance of 120 °. All core threads (20, 21, 22, 23) are covered by a sheath (24). This results in a voluminous wire (19) which is particularly suitable as a cored wire.
- the exemplary embodiments of wires (25, 26) shown in FIGS. (5) and (6) are similar in that three core threads (27, 28, 29) and (30, 31, 32) lie next to one another in one plane and parallel are arranged to extend to each other. They are each provided with a casing (34, 35).
- the Differences are that in the embodiment according to FIG. 5, the two outer core threads (27, 29) have a larger diameter than the inner core thread (28), so that the wire (25) has an approximately bone shape.
- the diameter ratios are reversed, ie the outer core threads (30, 32) have a smaller diameter than the central core thread (31). This results in a more oval cross section.
- Both embodiments are suitable both for the wire coils themselves and for cored wires, as can be seen from FIG. 2.
- Wear-resistant and hydrolysis-resistant materials are preferably used for the sheaths (18, 24, 33, 34) of the wires (15, 19, 25, 26), which are also able to protect the wires (15, 19, 25, 26)
- Appropriate thermoplastics are available here.
- the core threads (16, 17; 21, 22, 23; 27, 28, 29, 30, 31, 32) other materials are used that are characterized by special properties, but are not able themselves to the core threads (16 , 17; 21, 22, 23; 27, 28, 29, 30, 31, 32) to give dimensional stability.
- the combination of aramid core threads and polyphenylene sulfide core threads is recommended.
- Another advantageous combination consists in the arrangement of a middle polyester monofil core thread and outer polyacrylonitrile core threads.
Landscapes
- Paper (AREA)
- Ropes Or Cables (AREA)
- Inorganic Insulating Materials (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Thermistors And Varistors (AREA)
- Sewing Machines And Sewing (AREA)
- Manufacturing Of Electric Cables (AREA)
- Mechanically-Actuated Valves (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Woven Fabrics (AREA)
Abstract
Description
Die Erfindung betrifft ein Drahtgliederband, insbesondere für Papiermaschinen, zusammengesetzt aus Drähten, nämlich aus einer Vielzahl von nebeneinanderliegenden und ineinandergreifenden Drahtwendeln sowie gegebenenfalls aus die Drahtwendeln kuppelnden Steckdrähten und/oder aus in den von den Drahtwendeln gebildeten Hohlräumen sitzenden Fülldrähten, wobei zumindest ein Teil der Drähte aus einem Kern und einer den Kern umgebenden Ummantelung bestehen.The invention relates to a wire link belt, in particular for paper machines, composed of wires, namely of a plurality of adjacent and interlocking wire coils as well as optionally of plug wires coupling the wire coils and / or of cored wires sitting in the cavities formed by the wire coils, at least some of the wires consist of a core and a sheath surrounding the core.
Drahtgliederbänder sind beispielsweise in der DE-OS 24 19 751 und der FR-OS 24 94 319 beschrieben. Sie zeichnen sich dadurch aus, daß eine Vielzahl von flachen Drahtwendeln ineinandergreifen und mittels Steckdrähten gekuppelt sind. Zusätzlich können in die Hohlräume, die von den Drahtwendeln eingeschlossen werden, Füllmaterialien in Form von Drähten oder Stäben eingesetzt werden, um die Luftdurchlässigkeit der Drahtgliederbänder entsprechend den jeweiligen Anforderungen zu verringern. Der Querschnitt der Drahtwendeln kann rund, oval oder auch als flaches Rechteck ausgebildet sein.Wire link belts are described for example in DE-OS 24 19 751 and FR-OS 24 94 319. They are characterized in that a large number of flat wire coils interlock and are coupled by means of plug wires. In addition, filler materials in the form of wires or rods can be inserted into the cavities which are enclosed by the wire coils in order to reduce the air permeability of the wire link belts in accordance with the respective requirements. The cross section of the wire helices can be round, oval or a flat rectangle.
In dem DE-GM 86 23 879 ist ein Drahtgliederband beschrieben, bei dem die Drahtwendeln aus einem Kernfaden und einer diesen jeweils umgebenden Ummantelung gebildet sind. Der Kernfaden besteht aus einem oder mehreren Monofilen oder aus einem Endlosgarn oder einer Kombination verschiedener Endlosgarne oder aus einer Kombination von Monofilen und Endlosgarnen. Als Materialien werden Polyester, Polyacrylnitril und Polyamid angegeben. Für die Ummantelung wird eine Beschichtung aus wärmehärtbarem Material vorgeschlagen, in das elektrisch hochleitfähiger Kohlenstoff eingelagert ist. Das wärmehärtbare Material soll besonders verschleiß- und hydrolysefest sein, um dem Drahtgliederband eine verlängerte Lebensdauer zu geben. Der Kohlenstoff dient hingegen der Ableitung elektrischer Ladungen. Als Materialien werden Kunstharz, insbesondere Melamin-, Harnstoff-Formaldehyd-, Epoxy- oder Phenolharz sowie Polyurethan angegeben.DE-GM 86 23 879 describes a wire link belt in which the wire coils are formed from a core thread and a sheath that surrounds it. The core thread consists of one or more Monofilament or from a continuous yarn or a combination of different continuous yarns or from a combination of monofilament and continuous yarn. Polyester, polyacrylonitrile and polyamide are specified as materials. For the sheathing, a coating made of thermosetting material is proposed, in which electrically highly conductive carbon is embedded. The thermosetting material is said to be particularly wear and hydrolysis resistant in order to give the wire link belt an extended service life. The carbon, however, serves to discharge electrical charges. Synthetic resin, in particular melamine, urea-formaldehyde, epoxy or phenolic resin and polyurethane are specified as materials.
Da nach der Lehre des DE-GM 86 23 879 nur ein Kernfaden und eine gleichmäßige Beschichtung vorgesehen sind, haben die Drahtwendeln zwangsläufig kreisrunden Querschnitt. Für Drahtgliederbänder kommen aber auch andere Querschnitte, insbesondere Flächdrähte, in Frage. Solche Querschnitte ließen sich - wie bei den bekannten Drähten ohne Kernfaden - durch Extrudierung der Ummantelung mit einem entsprechend geformtem Düsenkopf herstellen. Dies Lösung hätte jedoch den Nachteil, daß ein relativ großer Teil des Gesamtquerschnitts von dem Material der Ummantelung gebildet würde und dann die Eigenschaften des Kernfadens kaum noch zum Tragen kämen. Dies würde jedoch gerade dem Ziel, den Drähten durch die Verwendung zumindest zweier verschiedener Materialien besondere Eigenschaften zu geben, zuwiderlaufen.Since only one core thread and a uniform coating are provided according to the teaching of DE-GM 86 23 879, the wire coils inevitably have a circular cross section. However, other cross sections, in particular flat wires, are also suitable for wire link belts. Such cross sections could be produced - as with the known wires without core thread - by extruding the sheathing with an appropriately shaped nozzle head. However, this solution would have the disadvantage that a relatively large part of the total cross-section would be formed by the material of the sheathing and the properties of the core thread would then hardly come into play. However, this would run counter to the goal of giving the wires special properties by using at least two different materials.
Ein weiterer Nachteil der vorbekannten Lösung besteht darin, daß die Möglichkeiten, verschiedene Materialien für die Ummantelung und den Kern einzusetzen, begrenzt sind.Another disadvantage of the previously known solution is that the possibilities of using different materials for the casing and the core are limited are.
Der Erfindung liegt die Aufgabe zugrunde, die einzelnen Teile eines Drahtgliederbandes, insbesondere die Drahtwendeln, gegebenenfalls aber auch die Steckdrähte und Fülldrähte, derart aufzubauen, daß auf einfach herzustellende Weise verschiedenste Querschnittsformen verwirklichbar sind und zudem eine große Freiheit bei der Wahl und Zusammenstellung der Materialien erreicht wird.The invention has for its object to construct the individual parts of a wire link belt, in particular the wire coils, but possibly also the plug-in wires and cored wires, in such a way that a wide variety of cross-sectional shapes can be realized in a simple manner and, moreover, great freedom in the choice and combination of materials is achieved becomes.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Kern aus zumindest zwei parallel nebeneinander verlaufenden, durch das Material der Ummantelung getrennten Kernfäden besteht und die Ummantelung an den von den Kernfäden gebildeten Querschnitt angepaßt ist.This object is achieved in that the core consists of at least two parallel parallel core threads separated by the material of the sheath and the sheath is adapted to the cross section formed by the core threads.
Dieser Ausbildung liegt der schon zur Erfindung gehörende Gedanke zugrunde, die Formgebung, d. h. die Querschnittsausformung der Drähte durch die Anzahl, den Querschnitt und die Anordnung der Kernfäden zu bestimmen. Die Ummantelung soll lediglich dem Schutz der Kernfäden dienen, den durch sie vorgegebenen Gesamtquerschnitt aber nicht wesentlich beeinflussen. Die Ummantelung soll die Kernfäden nach Art einer Haut zur Gänze einhüllen und lediglich noch die Zwischenräume zwischen den einzelnen Kernfäden ausfüllen. Man erhält dann zwar eine relativ dünne Ummantelung, die jedoch für die Hydrolyse- und Verschleißfestigkeit und auch für die Formbeständigkeit der Drähte ausreichend ist. Da der Querschnitt der Drähte ganz überwiegend von den Kernfäden selbst gebildet wird, sind deren Eigenschaften bestimmend für die Eigenschaften des gesamten Drahtgliederbandes.This training is based on the idea already belonging to the invention, the shape, d. H. to determine the cross-sectional shape of the wires by the number, the cross-section and the arrangement of the core threads. The sheathing is only intended to protect the core threads, but should not significantly influence the overall cross-section that they specify. The sheath is intended to completely encase the core threads in the manner of a skin and only to fill the spaces between the individual core threads. A relatively thin sheathing is then obtained, but this is sufficient for the resistance to hydrolysis and wear and also for the dimensional stability of the wires. Since the cross section of the wires is predominantly formed by the core threads themselves, their properties are decisive for the properties of the entire wire link belt.
Auf Grund dieser erfindungsgemäßen Ausbildung der Drähte ist es nicht erforderlich, die Ummantelung durch Extrudierung herzustellen. Es besteht auch die vorteilhafte Möglichkeit, die Kernfäden mit dem Material der Ummantelung zu tränken, was wesentlich einfacher und schneller und somit kostengünstiger erfolgen kann.Because of this inventive design of the wires, it is not necessary to pass through the sheathing To produce extrusion. There is also the advantageous possibility of impregnating the core threads with the material of the sheathing, which can be done much more easily and quickly and therefore more cost-effectively.
In Ausbildung der Erfindung ist vorgesehen, daß zumindest einer der Kernfäden als Spinnfasergarn, Multifilgarn oder als Zwirn ausgebildet ist und dieser Kernfaden bzw. diese Kernfäden vom Material der Ummantelung durchtränkt ist bzw. sind. Grundsätzlich können auch alle Kernfäden in dieser Art verarbeitet sein. Der Vorteil besteht darin, daß der Querschnitt dann praktisch vollständig von den Kernfäden gebildet wird, während das Material der Ummantelung in die Kernfäden selbst eindringt und ihnen auf diese Weise Formbeständigkeit gibt.In an embodiment of the invention it is provided that at least one of the core threads is designed as a spun fiber thread, multifilament thread or as a thread and this core thread or these core threads is or are impregnated with the material of the sheathing. In principle, all core threads can also be processed in this way. The advantage is that the cross section is then almost completely formed by the core threads, while the material of the sheath penetrates into the core threads themselves and in this way gives them dimensional stability.
Sofern ein relativ flacher Draht gewünscht ist, sollten die Kernfäden nebeneinander in einer Ebene angeordnet sein. Es besteht jedoch auch die Möglichkeit, einen voluminösen Draht dadurch herzustellen, daß ein zentraler Kernfaden von zumindest drei weiteren Kernfäden umgeben ist.If a relatively flat wire is desired, the core threads should be arranged next to one another in one plane. However, there is also the possibility of producing a voluminous wire in that a central core thread is surrounded by at least three further core threads.
In weiterer Ausgestaltung der Erfindung ist vorgeschlagen, daß mehr als zwei Kernfäden vorgesehen sind und die äußeren Kernfäden aus gegenüber dem bzw. den innenliegenden Kernfaden bzw. Kernfäden komprimierbarem Material bestehen oder als Spinnfasergarn, Multifilgarn und/oder Zwirn ausgebildet sind. Auf Grund dieser Ausbildung ist der Draht sehr anpassungsfähig. Er eignet sich vor allen Dingen als Fülldraht, wenn er in Übergröße hergestellt und dann eingeschoben wird. Er verzahnt sich dann mit den Drahtwendeln, wodurch eine hohe Lagestabilität erzielt wird. Entsprechendes gilt auch für die Verwendung als Steckdraht, denn die Kopfbögen der Drahtwendeln graben sich dann in den Steckdraht ein, was gleichfalls ein Verrutschen verhindert. Die Drähte können jedoch auch für die Drahtwendeln selbst zur Anwendung kommen, wenn diese eine kontrahierende Vorspannung haben. Die Kopfbögen der Drahtwendeln werden dann durch diese Vorspannung komprimiert, so daß sich der Abstand der einzelnen Windungen der Drahtwendeln und damit die Luftdurchlässigkeit verringern. Soweit ein zentraler Kernfaden mit diesen umgebenden weiteren Kernfäden vorgesehen ist, besteht je nach Anzahl der außenliegenden Kernfäden Kompressibilität über den gesamten Umfang.In a further embodiment of the invention it is proposed that more than two core threads are provided and the outer core threads consist of material which is compressible with respect to the inner core thread or core threads or are formed as spun fiber yarn, multifilament yarn and / or twine. Due to this training, the wire is very adaptable. It is particularly suitable as a cored wire if it is made in oversize and then inserted. It then interlocks with the wire helices, which ensures high positional stability. The same applies to the use as a plug wire, because the head bends of the wire coils then dig into the plug wire, which also prevents slipping. However, the wires can also be used for the wire coils themselves if they have a contracting bias. The head bends of the wire coils are then compressed by this pretension, so that the distance between the individual turns of the wire coils and thus the air permeability are reduced. If a central core thread is provided with these additional core threads surrounding it, depending on the number of external core threads there is compressibility over the entire circumference.
Die nicht außenliegenden Kernfäden bzw. der nicht außenliegende Kernfaden kann beispielsweise als Monofil aus Metall und/oder Kunststoff bestehen, so daß er relativ hart ist und hierdurch für hohe Festigkeit sorgt.The core threads that are not on the outside or the core threads that are not on the outside can consist, for example, of metal and / or plastic as a monofilament, so that it is relatively hard and thus ensures high strength.
Als Material für die Kernfäden bieten sich Polyamid, Polyacrylnitril und/oder Polyesterfasern bzw. -fäden an. Es besteht jedoch auch die Möglickeit, für die Kernfäden sehr hochfeste, temperatur- und chemikalienbeständige Materialien, wie beispielsweise Aramid- oder Polyphenylensulfid-Fasern bzw. -fäden, zu verwenden. Ein damit aufgebautes Drahtgliederband läßt sich dann auch bei relativ hohen Temperaturen einsetzen. Selbstverständlich kommen auch Kombinationen verschiedener Kernfäden in Frage.Polyamide, polyacrylonitrile and / or polyester fibers or threads are suitable as materials for the core threads. However, there is also the possibility of using very high-strength, temperature and chemical-resistant materials for the core threads, such as aramid or polyphenylene sulfide fibers or threads. A wire link belt constructed in this way can then also be used at relatively high temperatures. Of course, combinations of different core threads are also possible.
Die Formgebung der Drähte kann auch durch unterschiedliche Durchmesser der Kernfäden beeinflußtwerden. Beispielsweise können - wenn mehr als zwei Kernfäden vorgesehen sind - die äußeren Kernfäden einen geringeren Durchmesser als der innere Kernfaden bzw. die inneren Kernfäden haben. Soweit dabei die Kernfäden in einer Ebene liegen, entsteht ein ovales Profil. Es besteht jedoch auch die Möglichkeit, die äußeren Kernfäden mit einem größeren Durchmesser als die inneren auszustatten und hierdurch eine Art Knochenform zu erzeugen.The shape of the wires can also be influenced by different diameters of the core threads. For example, if more than two core threads are provided, the outer core threads can have a smaller diameter than the inner core thread or have the inner core threads. If the core threads lie in one plane, an oval profile is created. However, there is also the possibility of providing the outer core threads with a larger diameter than the inner ones and thereby producing a type of bone shape.
In der Zeichnung ist die Erfindung an Hand von Ausführungsbeispielen näher veranschaulicht. Es zeigen:
- Figur (1) eine Draufsicht auf einen Teil eines Drahtgliederbandes;
- Figur (2) einen Teilquerschnitt des Drahtgliederbandes nach Figur (1) und
- Figuren (3) bis (6) verschiedene Ausführungsformen von Drähten für das Drahtgliederband gemäß den Figuren (1) und (2).
- Figure (1) is a plan view of part of a wire link belt;
- Figure (2) shows a partial cross section of the wire link belt according to Figure (1) and
- Figures (3) to (6) different embodiments of wires for the wire link belt according to Figures (1) and (2).
Das in Figur (1) dargestellte Drahtgliederband (1) besteht aus einer Vielzahl von flachen Drahtwendeln, die mit ihren Kopfbögen - beispielhaft mit (6) bezeichnet sich gegenseitig derart überlappen, daß hierdurch jeweils Kanäle für das Einführen von Steckdrähten (7, 8, 9) gebildet werden, über die die einzelnen Drahwendeln (2, 3, 4, 5) miteinander gekuppelt werden.The wire link belt (1) shown in Figure (1) consists of a large number of flat wire coils, which overlap with one another with their head arches - for example designated (6) in such a way that channels for the insertion of plug wires (7, 8, 9 ) are formed, via which the individual wire helices (2, 3, 4, 5) are coupled together.
In die von den geraden Windungsschenkeln der Drahtwendeln (2, 3, 4, 5) gebildeten Hohlräume (10, 11, 12, 13) sind Fülldrähte (14) eingeschoben, von denen hier nur einer eingezeichnet ist. Mit diesen Fülldrähten (14) läßt sich die Durchlässigkeit des Drahtgliederbandes (1) wesentlich herabsetzen, was insbesondere für den Einsatz bei Trockensieben in Papiermaschinen erwünscht ist.Cored wires (14) are inserted into the cavities (10, 11, 12, 13) formed by the straight winding legs of the wire helices (2, 3, 4, 5), only one of which is shown here. With these cored wires (14) can significantly reduce the permeability of the wire link belt (1), which is particularly desirable for use in dryer fabrics in paper machines.
In den Figuren (3) bis (6) sind verschiedene Ausführungsformen von Drähten dargestellt, die sowohl für den Einsatz als Drahtwendeln (2, 3, 4, 5), als auch für den Einsatz als Steckdrähte (7, 8, 9) oder als Füllrähte (14) in Frage kommen. Im einzelnen seien die Drähte nachstehend erläutert.In the figures (3) to (6) different embodiments of wires are shown, both for use as wire coils (2, 3, 4, 5), as well as for use as plug wires (7, 8, 9) or as Fill wires (14) come into question. The wires are explained in detail below.
Der in Figur (3) dargestellte Draht (15) besteht aus zwei nebeneinander in einer Ebene parallel zueinander verlaufenden Kernfäden (16, 17) und einer Ummantelung (18). Wie zu sehen ist, entsteht hierdurch ein flacher Draht (15). Ein solcher Draht (15) eignet sich insbesondere für die Verwendung als Drahtwendel oder auch als Fülldraht.The wire (15) shown in FIG. (3) consists of two core threads (16, 17) running parallel to one another in one plane and a sheath (18). As can be seen, this creates a flat wire (15). Such a wire (15) is particularly suitable for use as a wire helix or as a cored wire.
Bei der in Figur (4) dargestellten Ausführungsform eines Drahtes (19) ist ein zentraler Kernfaden (20) von drei parallel verlaufenden, im Winkelabstand von 120° angeordneten Kernfäden (21, 22, 23) umgeben. Dabei sind alle Kernfäden (20, 21, 22, 23) von einer Ummantelung (24) eingehüllt. Auf diese Weise ergibt sich ein voluminöser Draht (19), der sich vor allem als Fülldraht eignet.In the embodiment of a wire (19) shown in FIG. (4), a central core thread (20) is surrounded by three parallel core threads (21, 22, 23) arranged at an angular distance of 120 °. All core threads (20, 21, 22, 23) are covered by a sheath (24). This results in a voluminous wire (19) which is particularly suitable as a cored wire.
Die in den Figuren (5) und (6) dargestellten Ausführungsbeispiele von Drähten (25, 26) sind insoweit ähnlich, als jeweils drei Kernfäden (27, 28, 29) bzw. (30, 31, 32) in einer Ebene nebeneinanderliegen und parallel zueinander verlaufend angeordnet sind. Sie sind jeweils mit einer Ummantelung (34, 35) versehen. Die Unterschiede bestehen darin, daß bei dem Ausführungsbeispiel gemäß Figur (5) die beiden äußeren Kernfäden (27, 29) einen größeren Durchmesser haben als der innere Kernfaden (28), so daß sich eine etwa knochenförmige Gestalt des Drahtes (25) ergibt. Bei dem Ausführungsbeispiel nach Figur (6) sind die Durchmesserverhältnisse umgekehrt, d. h. die äußeren Kernfäden (30, 32) haben einen kleineren Durchmesser als der mittlere Kernfaden (31). Hierdurch ergibt sich ein mehr ovaler Querschnitt. Beide Ausführungsformen eignen sich sowohl für die Drahtwendeln selbst als auch für Fülldrähte, wie dies aus Figur (2) zu ersehen ist.The exemplary embodiments of wires (25, 26) shown in FIGS. (5) and (6) are similar in that three core threads (27, 28, 29) and (30, 31, 32) lie next to one another in one plane and parallel are arranged to extend to each other. They are each provided with a casing (34, 35). The Differences are that in the embodiment according to FIG. 5, the two outer core threads (27, 29) have a larger diameter than the inner core thread (28), so that the wire (25) has an approximately bone shape. In the embodiment according to FIG. (6), the diameter ratios are reversed, ie the outer core threads (30, 32) have a smaller diameter than the central core thread (31). This results in a more oval cross section. Both embodiments are suitable both for the wire coils themselves and for cored wires, as can be seen from FIG. 2.
Für die Ummantelungen (18, 24, 33, 34) der Drähte (15, 19, 25, 26) werden vorzugsweise verschleiß- und hydrolysefeste Materialien verwendet, die zudem in der Lage sind, den Drähten (15, 19, 25, 26) Formbeständigkeit zu geben. Hier bieten sich entsprechende Thermoplaste an. Für die Kernfäden (16, 17; 21, 22, 23; 27, 28, 29, 30, 31, 32) werden andere Materialien verwendet, die sich durch besondere Eigenschaften auszeichnen, selbst aber nicht in der Lage sind, den Kernfäden (16, 17; 21, 22, 23; 27, 28, 29, 30, 31, 32) Formbeständigkeit zu geben. Zur Erzielung einerseits hoher Temperaturbeständigkeit und andererseits guter Chemikalienresistenz empfiehlt sich die Kombination von Aramid-Kernfäden und Polyphenylensulfid-Kernfäden. Eine andere vorteilhafte Kombination besteht in der Anordnung eines mittleren Polyestermonofil-Kernfadens und äußeren Polyacrylnitril-Kernfäden.Wear-resistant and hydrolysis-resistant materials are preferably used for the sheaths (18, 24, 33, 34) of the wires (15, 19, 25, 26), which are also able to protect the wires (15, 19, 25, 26) To give dimensional stability. Appropriate thermoplastics are available here. For the core threads (16, 17; 21, 22, 23; 27, 28, 29, 30, 31, 32), other materials are used that are characterized by special properties, but are not able themselves to the core threads (16 , 17; 21, 22, 23; 27, 28, 29, 30, 31, 32) to give dimensional stability. To achieve high temperature resistance on the one hand and good chemical resistance on the other hand, the combination of aramid core threads and polyphenylene sulfide core threads is recommended. Another advantageous combination consists in the arrangement of a middle polyester monofil core thread and outer polyacrylonitrile core threads.
Claims (11)
dadurch gekennzeichnet, daß der Kern aus zumindest zwei parallel nebeneinander verlaufenden, durch das Material der Ummantelung (18, 24, 33, 34) getrennten Kernfäden (16, 17; 20, 21, 22, 23; 27, 28, 29; 30, 31, 32) besteht.1.Wire link belt, in particular for paper machines, composed of wires, namely of a multiplicity of adjacent and intermeshing wire helices and, if appropriate, of plug wires coupling the wire helices and / or of cored wires sitting in the cavities formed by the wire helices, at least some of the wires being made of one Core and a sheath surrounding the core,
characterized in that the core consists of at least two parallel core threads (16, 17; 20, 21, 22, 23; 27, 28, 29; 30) which are separated by the material of the sheath (18, 24, 33, 34), 31, 32).
dadurch gekennzeichnet, daß zumindest einer der Kernfäden (16, 17; 20, 21, 22, 23; 27, 28, 29; 30, 31, 32) als Spinnfasergarn, Multifilgarn oder Zwirn ausgebildet sind und dieser Kernfaden bzw. diese Kernfäden (16, 17; 20, 21, 22, 23; 27, 28, 29; 30, 31, 32) vom Material der Ummantelung (18, 24, 33, 34) durchtränkt ist bzw. sind.2. wire link belt according to claim 1,
characterized in that at least one of the core threads (16, 17; 20, 21, 22, 23; 27, 28, 29; 30, 31, 32) is designed as a spun fiber thread, multifilament thread or twine and this core thread or these core threads (16 , 17; 20, 21, 22, 23; 27, 28, 29; 30, 31, 32) is or are impregnated with the material of the casing (18, 24, 33, 34).
dadurch gekennzeichnet, daß alle Kernfäden (16, 17; 20, 21, 22, 23; 27, 28, 29; 30, 31, 32) als Spinnfasergarn, Multifilgarn oder Zwirn ausgebildet sind und diese Kernfäden (16, 17; 20, 21, 22, 23; 27, 28, 29; 30, 31, 32) durchtränkt sind.3. wire link belt according to claim 2,
characterized in that all core threads (16, 17; 20, 21, 22, 23; 27, 28, 29; 30, 31, 32) are formed as spun fiber yarn, multifilament yarn or twine and these core threads (16, 17; 20, 21, 22, 23; 27, 28, 29; 30, 31, 32) are soaked.
dadurch gekennzeichnet, daß die Kernfäden (16, 17; 27, 28, 29; 30, 31, 32) in einer Ebene angeordnet sind.4. wire link belt according to one of claims 1 to 3,
characterized in that the core threads (16, 17; 27, 28, 29; 30, 31, 32) are arranged in one plane.
dadurch gekennzeichnet, daß ein zentraler Kernfaden (20) von zumindest drei weiteren Kernfäden (21, 22, 23, 24) umgeben ist.5. wire link belt according to one of claims 1 to 3,
characterized in that a central core thread (20) is surrounded by at least three further core threads (21, 22, 23, 24).
dadurch gekennzeichnet, daß mehr als zwei Kernfäden (20, 21, 22, 23; 27, 28, 29; 30, 31, 32) vorgesehen sind und die äußeren Kernfäden (21, 22, 23; 27, 29, 30, 32) gegenüber dem innenliegenden Kernfaden (20, 29, 31) bzw. den innenliegenden Kernfäden aus komprimierbarem Material bestehen und/oder als Spinnfasergarn, Multifilgarn und/oder Zwirn ausgebildet sind.6. wire link belt according to claim 4 or 5,
characterized in that more than two core threads (20, 21, 22, 23; 27, 28, 29; 30, 31, 32) are provided and the outer core threads (21, 22, 23; 27, 29, 30, 32) compared to the inner core thread (20, 29, 31) or the inner core threads made of compressible material and / or are formed as spun fiber yarn, multifilament yarn and / or twine.
dadurch gekennzeichnet, daß mehr als zwei Kernfäden (20, 21, 22, 23; 27, 28, 29; 30, 31, 32) vorgesehen sind und der nicht außenliegende Kernfaden (20, 28, 31) bzw. die nicht außenliegenden Kernfäden als Monofil aus Metall und/oder Kunststoff bestehen.7. wire link belt according to claim 4 or 5,
characterized in that more than two core threads (20, 21, 22, 23; 27, 28, 29; 30, 31, 32) are provided and the non-external core thread (20, 28, 31) or the non-external core threads as Monofilament made of metal and / or plastic.
dadurch gekennzeichnet, daß zumindest einer der Kernfäden (16, 17; 20, 21, 22, 23; 27, 28, 29; 30, 31, 32) aus Polyamid, Polyacrylnitril und/oder Polyester besteht.8. wire link belt according to one of claims 1 to 7,
characterized in that at least one of the core threads (16, 17; 20, 21, 22, 23; 27, 28, 29; 30, 31, 32) consists of polyamide, polyacrylonitrile and / or polyester.
dadurch gekennzeichnet, daß zumindest einer der Kernfäden aus Aramiden und/oder Polyphenylensulfiden besteht.9. wire link belt according to one of claims 1 to 8,
characterized in that at least one of the core threads consists of aramids and / or polyphenylene sulfides.
dadurch gekennzeichnet, daß mehr als zwei Kernfäden (30, 31, 32) vorgesehen sind und die äußeren Kernfäden (30, 32) einen geringeren Durchmesser als der innere Kernfaden (31) bzw. die inneren Kernfäden haben.10. wire link belt according to one of claims 1 to 9,
characterized in that more than two core threads (30, 31, 32) are provided and the outer core threads (30, 32) have a smaller diameter than the inner core thread (31) or the inner core threads.
dadurch gekennzeichnet, daß mehr als zwei Kernfäden (27, 28, 29) vorgesehen sind und die äußeren Kernfäden (27, 29) einen größeren Durchmesser als der innere Kernfaden (28) bzw. die inneren Kernfäden haben.11. wire link belt according to one of claims 1 to 9,
characterized in that more than two core threads (27, 28, 29) are provided and the outer core threads (27, 29) have a larger diameter than the inner core thread (28) or the inner core threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT88106379T ATE59866T1 (en) | 1987-05-14 | 1988-04-21 | WIRE LINK BAND. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8706893U | 1987-05-14 | ||
| DE8706893U DE8706893U1 (en) | 1987-05-14 | 1987-05-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0292700A1 true EP0292700A1 (en) | 1988-11-30 |
| EP0292700B1 EP0292700B1 (en) | 1991-01-09 |
Family
ID=6808010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88106379A Expired - Lifetime EP0292700B1 (en) | 1987-05-14 | 1988-04-21 | Spiral fabric |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0292700B1 (en) |
| AT (1) | ATE59866T1 (en) |
| CA (1) | CA1324907C (en) |
| DE (2) | DE8706893U1 (en) |
| ES (1) | ES2020313B3 (en) |
| FI (1) | FI882246A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9209146U1 (en) * | 1992-07-08 | 1992-09-10 | Wuerttembergische Filztuchfabrik D. Geschmay Gmbh, 7320 Goeppingen, De | |
| US5810159A (en) * | 1995-09-16 | 1998-09-22 | Thomas Josef Heimbach Gmbh & Co. | Link conveyor especially for paper-making machines |
| WO2007129041A1 (en) * | 2006-05-03 | 2007-11-15 | Marathon Belting Limited | Improvements to press pads |
| WO2021069472A1 (en) * | 2019-10-08 | 2021-04-15 | Württembergische Spiralsiebfabrik Gmbh | Sheath-core yarn, sheet material, method for producing a sheath-core yarn, method for producing a sheet material |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8706893U1 (en) * | 1987-05-14 | 1987-08-06 | Thomas Josef Heimbach Gmbh & Co, 5160 Dueren, De | |
| DE3929310C2 (en) * | 1989-09-04 | 1994-03-17 | Heimbach Gmbh Thomas Josef | Wire coil and wire link belt containing it |
| ATE140495T1 (en) * | 1992-02-28 | 1996-08-15 | Jwi Ltd | DRYING SCREEN FOR PAPER MACHINES WITH HOLLOW MONOFILAMENTS |
| DE102014205422A1 (en) * | 2014-03-24 | 2015-07-09 | Voith Patent Gmbh | covering |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1116540A (en) * | 1954-12-14 | 1956-05-08 | Further training in wire mesh | |
| US4395308A (en) * | 1981-06-12 | 1983-07-26 | Scapa Dyers Inc. | Spiral fabric papermakers felt and method of making |
| US4500590A (en) * | 1984-06-25 | 1985-02-19 | Wangner Systems Corporation | Dryer fabric having reduced permeability in the area of the pintle joint |
| DE8623879U1 (en) * | 1986-09-05 | 1986-10-23 | Carl Veit GmbH, 7320 Göppingen | Yarn for the production of spiral belts, spiral screens and the like. |
| DE8706893U1 (en) * | 1987-05-14 | 1987-08-06 | Thomas Josef Heimbach Gmbh & Co, 5160 Dueren, De |
-
1987
- 1987-05-14 DE DE8706893U patent/DE8706893U1/de not_active Expired
-
1988
- 1988-04-21 ES ES88106379T patent/ES2020313B3/en not_active Expired - Lifetime
- 1988-04-21 AT AT88106379T patent/ATE59866T1/en not_active IP Right Cessation
- 1988-04-21 DE DE8888106379T patent/DE3861492D1/en not_active Expired - Fee Related
- 1988-04-21 EP EP88106379A patent/EP0292700B1/en not_active Expired - Lifetime
- 1988-05-09 CA CA000566305A patent/CA1324907C/en not_active Expired - Lifetime
- 1988-05-13 FI FI882246A patent/FI882246A/en not_active Application Discontinuation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1116540A (en) * | 1954-12-14 | 1956-05-08 | Further training in wire mesh | |
| US4395308A (en) * | 1981-06-12 | 1983-07-26 | Scapa Dyers Inc. | Spiral fabric papermakers felt and method of making |
| US4500590A (en) * | 1984-06-25 | 1985-02-19 | Wangner Systems Corporation | Dryer fabric having reduced permeability in the area of the pintle joint |
| DE8623879U1 (en) * | 1986-09-05 | 1986-10-23 | Carl Veit GmbH, 7320 Göppingen | Yarn for the production of spiral belts, spiral screens and the like. |
| DE8706893U1 (en) * | 1987-05-14 | 1987-08-06 | Thomas Josef Heimbach Gmbh & Co, 5160 Dueren, De |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9209146U1 (en) * | 1992-07-08 | 1992-09-10 | Wuerttembergische Filztuchfabrik D. Geschmay Gmbh, 7320 Goeppingen, De | |
| US5810159A (en) * | 1995-09-16 | 1998-09-22 | Thomas Josef Heimbach Gmbh & Co. | Link conveyor especially for paper-making machines |
| WO2007129041A1 (en) * | 2006-05-03 | 2007-11-15 | Marathon Belting Limited | Improvements to press pads |
| GB2447837A (en) * | 2006-05-03 | 2008-09-24 | Marathon Belting Ltd | Improvements to press pads |
| US7892990B2 (en) | 2006-05-03 | 2011-02-22 | Marathon Belting Limited | Press pads |
| GB2447837B (en) * | 2006-05-03 | 2011-07-13 | Marathon Belting Ltd | Improvements to press pads |
| CN101432130B (en) * | 2006-05-03 | 2013-10-16 | 马拉松包带有限公司 | Improvements to press pads |
| WO2021069472A1 (en) * | 2019-10-08 | 2021-04-15 | Württembergische Spiralsiebfabrik Gmbh | Sheath-core yarn, sheet material, method for producing a sheath-core yarn, method for producing a sheet material |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2020313B3 (en) | 1991-08-01 |
| ATE59866T1 (en) | 1991-01-15 |
| EP0292700B1 (en) | 1991-01-09 |
| FI882246A0 (en) | 1988-05-13 |
| FI882246A (en) | 1988-11-15 |
| DE8706893U1 (en) | 1987-08-06 |
| CA1324907C (en) | 1993-12-07 |
| DE3861492D1 (en) | 1991-02-14 |
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