EP0528852A1 - Woven fabric made of synthetic monofilaments for use as a dewatering screen in a paper-manufacturing machine. - Google Patents

Woven fabric made of synthetic monofilaments for use as a dewatering screen in a paper-manufacturing machine.

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Publication number
EP0528852A1
EP0528852A1 EP91908667A EP91908667A EP0528852A1 EP 0528852 A1 EP0528852 A1 EP 0528852A1 EP 91908667 A EP91908667 A EP 91908667A EP 91908667 A EP91908667 A EP 91908667A EP 0528852 A1 EP0528852 A1 EP 0528852A1
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EP
European Patent Office
Prior art keywords
weft
threads
layer
warp threads
thread
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91908667A
Other languages
German (de)
French (fr)
Other versions
EP0528852B1 (en
Inventor
Walter Kovar
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Hutter and Schrantz AG
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Hutter and Schrantz AG
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Publication of EP0528852A1 publication Critical patent/EP0528852A1/en
Application granted granted Critical
Publication of EP0528852B1 publication Critical patent/EP0528852B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D21F1/0036—Multi-layer screen-cloths
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]

Definitions

  • the invention relates to a fabric made of plastic monofilaments for use as a drainage screen of a paper machine, based on a family of warp threads and three layers of weft threads, which are " connected by these warp threads. To increase the wear volume of the running side of the sieves , were
  • binding threads designed as warp threads connecting the two layers to one another in such a way that the upper layer of the finished sieve is not absolutely flat in its surface position, so that through the different
  • the level of circulation of the sieve markings can be caused to a greater extent.
  • the aim of the present invention is to prevent markings and
  • a further object of the invention is to make the bow of the lower weft layer protrude more towards the barrel side so that more volume of the lower weft thread can be ground down before the chain knuckles on the barrel side come to be ground.
  • each weft thread of the lower layer is gripped from below by two, preferably not adjacent warp threads and pulled up against the warp threads lying between the weft thread of the middle layer and itself as a support, so that the sheet directed towards the outside of the sieve is maximal can be trained.
  • four wefts of the upper ply with two wefts of the middle ply and one weft of the lower ply form a group, two of the warp threads lying next to each other forming one thread from the wefts of the upper ply two above, one below and two binds above, then passes the middle layer and passes the weft of the lower layer of the third group below, then again binds the upper layer after half the repeat length as before, then runs through the middle layer and ties the lower weft of the seventh group, while everyone second warp thread in the repeat increase offset the upper layer binds, but then runs in the same way under the weft threads of the middle layer and in the second half of the repeat.
  • This value should be between 3.2 and 4.5 in the upper layer, between 5.1 and 5.2 in the middle layer and between 6.2 and 7 in the lower layer.
  • the weft threads of the middle layer expediently consist of a high molecular weight polyester material with an elongation at break of less than 30% and a viscosity index of the polymer of above 0.90.
  • Fig.l shows a section parallel to the chain and Fig.2 parallel to the weft of the fabric.
  • the Fig.3 shows the Bind ⁇ ster of a 14-strand fabric again.
  • two of the weft threads of the upper layer 1, 3, 4, 7, 6, 10 etc. are assigned to one weft thread of the middle layer 2, 6, 9, 13 and so on.
  • For each weft thread of the middle layer there is a weft thread of the lower layer 5, 12, 19 etc.
  • Four weft threads of the upper layer, two of the middle and one of the lower layer form a weft group.
  • the warp threads 2 ', 4 1 , 6', 8 'etc. are arranged so that they
  • each weft thread of the lower layer is tied by two warp threads.
  • the warp threads 1 'then lie between the weft thread of the lower layer 5 and that of the middle layer 6. 3 ', 6', 8 'and 13', which deform the bow of the weft thread 5 to the barrel side during weaving and even more when the sieve is therefrom.
  • the warp threads that run between the middle and lower weft layers (1 ' f 3', 6 ', 8', 13 'in Fig.
  • the warp threads 1 ', 3', 6 ', 8', 13 ' which run through in the space between the middle and the lower weft layer are distributed as evenly as possible between the binding points of the lower weft (10', 12 '). Furthermore, the material of the middle weft thread is chosen so that it is as little deformed and stiff as possible during the weaving and ther of ixieringes.
  • the table shows a too soft position for the assignment of warp thread numbers and diameters! to the thread counts and diameters of the three weft layers, which results in a constant narrowing of the free space between the weft threads from the running side to the paper side, which causes the damping effect of the individual weft layers.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Woven Fabrics (AREA)
  • Paper (AREA)
  • Artificial Filaments (AREA)

Abstract

PCT No. PCT/AT91/00060 Sec. 371 Date Oct. 20, 1992 Sec. 102(e) Date Oct. 20, 1992 PCT Filed Apr. 23, 1991 PCT Pub. No. WO91/17292 PCT Pub. Date Nov. 14, 1991.A fabric of synthetic monofilaments for making a draining wire in a paper machine includes a plurality of warp threads an three layers of weft threads. Each four weft threads of the top layer, two weft threads of the middle layer and all weft thread of the bottom layer form a respective group characterized by warp threads running through the two top layer and the other warp threads running through all three layers.

Description

Gewebe aus Kunststof f-Monof ilamenten für den Einsatz als Entwässerungssieb einer Papiermaschine Fabric made of plastic monofilaments for use as a drainage screen in a paper machine
Die Erfindung bezieht sich auf ein Gewebe aus Kunststof f-Monof ilamenten für den Einsatz als Entwässerungssieb einer Papiermaschine, aufbauend auf einer Schar von Kettfäden und drei Lagen von Schußfäden, die "durch diese Kettfäden verbunden sind. Um das Verschleißvolumen der Laufseite der Siebe zu erhöhen, wurdenThe invention relates to a fabric made of plastic monofilaments for use as a drainage screen of a paper machine, based on a family of warp threads and three layers of weft threads, which are " connected by these warp threads. To increase the wear volume of the running side of the sieves , were
Siebe mit höherer Schaftzahl ausgeführt wodurch bei weitgehend gleichem Aussehen der papierseitigen Auf lagegeometrie eine längere Flottierung der Schußfäden an der Laufseite erreicht wird. Es steht dadurch im Verhältnis ein größerer Teil der Länge der laufseitigen Schußfäden zum Abrieb zur Verfügung. Probleme bei dieser Konstruktion treten dadurch auf, daß die über längere Strecken flottierenden Schußfäden vor allem bei rascher laufenden Maschinen durch Turbulenzw rkung bei der Bewegung des Siebes über stehende Entwässerungselemente wie Foils, Naßsauger oder Sauger eine deutliche Papiermarkierung bewirken. Ein drei lagiges Gewebe entsprechend der eingangs genannten Art ist aus der DE-A-2 455 185 bekannt. Jeweils zwei benachbarte Lagen, die durch eigene Kettfäden gebunden sind, sind durch gesonderte Bindefäden verbunden, wobei die als Kettfäden ausgebildeten Bindefäden die beiden Lagen derart miteinan¬ der verbinden, daß beim fertigen Sieb die obere Lage nicht absolut plan in ihrer Oberflächenlage ausgeführt ist, so daß durch das unterschiedlicheSieves with a higher number of shafts, which results in a longer floatation of the weft threads on the barrel side with largely the same appearance of the paper-side bearing geometry. As a result, a larger part of the length of the running weft threads is available for abrasion. Problems with this construction occur in that the weft threads floating over longer distances, especially in the case of faster-running machines, cause a clear paper marking due to turbulence when the screen is moved over standing drainage elements such as foils, wet vacuum cleaners or vacuum cleaners. A three-layer fabric corresponding to the type mentioned is known from DE-A-2 455 185. Two adjacent layers each, which are bound by their own warp threads, are connected by separate binding threads, the binding threads designed as warp threads connecting the two layers to one another in such a way that the upper layer of the finished sieve is not absolutely flat in its surface position, so that through the different
Niveau der Auflage Siebmarkierungen in stärkerem Ausmaß hervorgerufen werden.The level of circulation of the sieve markings can be caused to a greater extent.
Ziel der vorliegenden Erfindung ist es, Markierungen zu verhindern undThe aim of the present invention is to prevent markings and
Siebe mit länger flottierenden Schußfäden auf der Laufseite auch bei schnei laufenden Maschinen mit Geschwindigkeiten über ΛOOm/min einsetzen zu können. Erreicht wird dies dadurch, daß die in Gruppen zu sarrmenge faßten Schußfäden durch, die oberen zwei Lagen durchlau ende Kettfäden und alle drei Lagen durchlaufende Kettfäden gebunden sind. Die derart gebundene mittlere Schußlage erzeugt einen größeren Abstand zwischen der Vliesoberfläche und den stehenden Tragelementen der Papier¬ maschine, scdaß die Turbulenzwirkungen der lange flottierenden unteren Schußfäden nicht mehr auf das Vlies durchschlagen. Sie bewirkt deimach eine Störung dieser Turbulenzen und däπpft sie in ihrer Wirkung auf das Vlies durch den sich verengenden freien Raum der Siebkonstruktion in vertikaler Richtung nach oben. Markierungen treten praktisch nicht mehr auf.To be able to use sieves with longer floating weft threads on the running side even with machines running at speeds above ΛOOm / min. This is achieved in that the wefts contained in groups of too large quantities are bound by, the upper two layers of continuous warp threads and all three layers of continuous warp threads are bound. The middle weft layer bound in this way creates a greater distance between the nonwoven surface and the standing support elements of the paper machine, so that the turbulence effects of the long floating lower weft threads no longer strike the nonwoven. It therefore causes a disturbance of this turbulence and reduces its effect on the fleece in a vertical direction due to the narrowing free space of the screen construction. Markings practically no longer appear.
Ein weiteres Ziel der Erfindung ist es, den Bcgen der unteren Schußlage zur Laufseite hin stärker hervortreten zu lassen, damit mehr Volumen des unteren Schußfadens abgeschliffen werden kann, bevor die Kettknöchel an der Laufseite zum Anschliff kct ien. Bei einem erfindungsgeπäßen Gewebe wird hiezu jeder Schußfaden der unteren Lage von zwei, vorzugsweise nicht nebeneinander liegenden Kettfäden von unten erfaßt und gegen die zwischen dem Schußfaden der mittleren Lage und ihm selbst liegenden Kettfäden als Auflage hochgezo- gen, sodaß der zur Siebaußenseite hin gerichtete Bogen maximal ausgebildet werden kann.A further object of the invention is to make the bow of the lower weft layer protrude more towards the barrel side so that more volume of the lower weft thread can be ground down before the chain knuckles on the barrel side come to be ground. In the case of a fabric according to the invention, each weft thread of the lower layer is gripped from below by two, preferably not adjacent warp threads and pulled up against the warp threads lying between the weft thread of the middle layer and itself as a support, so that the sheet directed towards the outside of the sieve is maximal can be trained.
Bei einer bevorzugten Ausführungsform der Erfindung bilden jeweils vier Schußfäden der oberen Lage mit zwei Schußfäden der mittleren Lage und einem Schußfaden der unteren Lage eine Gruppe, wobei von zwei nebeneinander liegenden Kettfäden ein Faden von den Schußfäden der oberen Lage zwei oberhalb, einen unterhalb, und zwei oberhalb abbindet, dann die mittlere Lage passiert und den Schußfaden der unteren Lage der dritten Gruppe unten passiert, sodann wieder nach der halben Rapportlänge die obere Lage wie zuvor abbindet, dann durch die mittlere Lage läuft und den unteren Schußfaden der siebenten Gruppe abbindet, während jeder zweite Kettfaden im Rapportanstieg versetzt die obere Lage bindet, dann aber unter den Schußfäden der mittleren Lage und in der zweiten Rapporthälfte gleichartig verläuft.In a preferred embodiment of the invention, four wefts of the upper ply with two wefts of the middle ply and one weft of the lower ply form a group, two of the warp threads lying next to each other forming one thread from the wefts of the upper ply two above, one below and two binds above, then passes the middle layer and passes the weft of the lower layer of the third group below, then again binds the upper layer after half the repeat length as before, then runs through the middle layer and ties the lower weft of the seventh group, while everyone second warp thread in the repeat increase offset the upper layer binds, but then runs in the same way under the weft threads of the middle layer and in the second half of the repeat.
Das Maß der Verengung des freien Raumes zwischen den Fäden der einzelnen Schußlagen kann durch den Wert A = (10 - Schußfadenzahl pro cm x Schußdurchmesser in πm) dargestellt werden und ergibt die freie Fläche zwischen den Schußfäden auf 10 nrm Sieblänge gesehen. Dieser Wert soll in der oberen Lage zwischen 3,2 und 4,5, in der mittleren Lage zwischen 5,1 und 5,2 und in der unteren Lage zwischen 6,2 und 7 betragen. Zweckmäßig bestehen die Schußfäden der mittleren Lage aus einem hochmolekularen Polyesteπraterial mit einer Bruchdehnung kleiner als 30% und einem Viskositätsindex des Polymers über 0.90.The measure of the narrowing of the free space between the threads of the individual weft layers can be represented by the value A = (10 - weft thread number per cm x weft diameter in πm) and results in the free area between the weft threads at a sieve length of 10 nm. This value should be between 3.2 and 4.5 in the upper layer, between 5.1 and 5.2 in the middle layer and between 6.2 and 7 in the lower layer. The weft threads of the middle layer expediently consist of a high molecular weight polyester material with an elongation at break of less than 30% and a viscosity index of the polymer of above 0.90.
Die Schaftzahl beträgt vorteilhaft 14 oder 16. Nachstehend ist die Erfindung an Hand eines in der Zeichnung darge¬ stellten Ausführungsbeispie es näher beschrieben, ohne auf dieses beschränkt zu sein. Dabei zeigt Fig.l einen Schnitt parallel zur Kette und Fig.2 parallel zum Schuß des Gewebes. Die Fig.3 gibt das Bindungsπ ster eines 14-schäftigen Gewebes wieder. Gemäß Fig.l sind von den Schußfäden der oberen Lage 1, 3, 4, 7, 6, 10 usf. jeweils zwei einem Schußfaden der mittleren Lage 2, 6, 9, 13 usf. zugeordnet. Auf je zwei Schußfäden der mittleren Lage kommt dann ein Schußfaden der unteren Lage 5, 12, 19 usf. Vier Schußfäden der oberen Lage, zwei der mittleren und einer der unteren Lage bilden eine Schußgruppe. Die Kettfäden 2', 41 , 6', 8' usf. sind so angeordnet, daß sie dieThe number of shafts is advantageously 14 or 16. The invention is described in more detail below on the basis of an exemplary embodiment shown in the drawing, without being limited to this. Fig.l shows a section parallel to the chain and Fig.2 parallel to the weft of the fabric. The Fig.3 shows the Bindππ ster of a 14-strand fabric again. According to FIG. 1, two of the weft threads of the upper layer 1, 3, 4, 7, 6, 10 etc. are assigned to one weft thread of the middle layer 2, 6, 9, 13 and so on. For each weft thread of the middle layer there is a weft thread of the lower layer 5, 12, 19 etc. Four weft threads of the upper layer, two of the middle and one of the lower layer form a weft group. The warp threads 2 ', 4 1 , 6', 8 'etc. are arranged so that they
Schußfäden der oberen Lage im Rhythnrus 2/1/2 abbinden, dann durch die mittlere Lage verlaufen und den Schuß der unteren Lage abbinden, bevor sie wieder nach oben gehen. Dieser Verlauf wiederholt sich im Bindungsrapport noch einmal. Eine zweite Kettfadenschar 1', 3', 5', 7' usf. wird in der oberen Lage gleich wie 2', 4', 6' usf. geführt, sie läuft dann allerdings nur unter den Schußfäden der mittleren Gruppe, ohne einen Faden der unteren Gruppe abzubinden. Der nächste Kettfaden der ersten Gruppe 4' (nach 2' ) wird so geführt, daß er in der unteren Lage denselben Schußfaden 19 abbindet. Als zweiten Schußfaden in der unteren Lage bindet dieser Kettfaden allerdings dann den Schußfaden 40 der unteren Lage ab. Auf diese Weise ergibt sich, daß jeder Schußfaden der unteren Lage von zwei Kettfäden abgebunden wird. Wie im Querschnitt der Bindung (Fig.2) dargestellt, liegen dann zwischen dem Schußfaden der unteren Lage 5 und dem der mittleren Lage 6 die Kettfäden 1'. 3', 6', 8' und 13', die den Bogen des Schußfadens 5 zur Laufseite beim Weben und noch mehr beim Ther of ixieren des Siebes nach außen verformen. Es werden demgemäß durch diejenigen Kettfäden, die zwischen der mittleren und unteren Schußlage verlaufen (l'f 3', 6', 8', 13' in Fig.2) für den unteren Schuß Auflagepunkte gebildet, die zur Bildung eines stärkeren Bogens des unteren Schußfadens zur Lauf Seite hin führen, wodurch auch das Abriebvolumen des Siebes erhöht wird, da ein größeres Volumen des unteren Schußfadens angeschliffen werden kann, bevor die Kettfäden lauf seit ig zum Anschliff korrmen. Die im Raum zwischen der mittleren und der unteren Schußlage durchlaufenden Kettfäden 1', 3', 6', 8', 13' sind möglichst gleichmäßig zwischen den Abbindestellen des unteren Schusses (10', 12') verteilt. Weiters wird das Material des mittleren Schußfadens so gewählt, daß sich dieser während des Web- und Ther of ixiervorganges möglichst wenig verformt und steif verhält.Tie the wefts of the top layer in rhythm 2/1/2, then run through the middle layer and tie the weft of the bottom layer before going up again. This course is repeated once more in the bond repeat. A second warp thread sheet 1 ', 3', 5 ', 7' etc. is guided in the upper position in the same way as 2 ', 4', 6 'etc., but then runs only under the weft threads of the middle group, without a thread the lower group. The next warp thread of the first group 4 '(after 2') is guided so that it ties the same weft thread 19 in the lower layer. As a second weft thread in the lower layer, however, this warp thread then binds off the weft thread 40 of the lower layer. In this way it follows that each weft thread of the lower layer is tied by two warp threads. As shown in the cross section of the binding (FIG. 2), the warp threads 1 'then lie between the weft thread of the lower layer 5 and that of the middle layer 6. 3 ', 6', 8 'and 13', which deform the bow of the weft thread 5 to the barrel side during weaving and even more when the sieve is therefrom. Accordingly, the warp threads that run between the middle and lower weft layers (1 ' f 3', 6 ', 8', 13 'in Fig. 2) form support points for the lower weft, which form a stronger arch of the lower one Guide the weft thread to the barrel side, which also increases the abrasion volume of the sieve, since a larger volume of the lower weft thread can be sanded before the warp threads run to the sanding side. The warp threads 1 ', 3', 6 ', 8', 13 'which run through in the space between the middle and the lower weft layer are distributed as evenly as possible between the binding points of the lower weft (10', 12 '). Furthermore, the material of the middle weft thread is chosen so that it is as little deformed and stiff as possible during the weaving and ther of ixieringes.
In der Tabelle findet sich eine Zu sanmen Stellung der Zuordnung von Kettfadenzahlen und -durchmessen! zu den Fadenzahlen und Durchmessern der drei Schußlagen, die von der Laufseite zur Papierseite hin eine stetige Verengung des freien Raumes zwischen den Schußfäden ergibt, wodurch die Därrpfungswirkung der einzelnen Schußlagen hervorgerufen wird. The table shows a too soft position for the assignment of warp thread numbers and diameters! to the thread counts and diameters of the three weft layers, which results in a constant narrowing of the free space between the weft threads from the running side to the paper side, which causes the damping effect of the individual weft layers.
Tabelle 1Table 1
Kettfaden^* Schußfadenzahl Schußfaden- Kennzahl A zahl (cm ) (cm ) durchmesser 10 - Zs.ds Kettfaden- (mm) durchm. (mm)Warp thread ^ * weft thread number weft thread number A number (cm) (cm) diameter 10 - Zs.ds warp thread (mm) diam. (mm)
70/cm 0,15 0,15 0,20 0,3570 / cm 0.15 0.15 0.20 0.35
0/cm 0,17 ,17 0,22 0,400 / cm 0.17, 17 0.22 0.40
6/cm 0,20 ,20 0,25 0,456 / cm 0.20, 20 0.25 0.45
4/cm 0,23 ,23 0,32 0,504 / cm 0.23, 23 0.32 0.50
6/cm 0,25 ,25 0,45 0,55 6 / cm 0.25, 25 0.45 0.55

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Gewebe aus Kunst st off-Monof ilamenten für den Einsatz als Entwässe¬ rungssieb einer Papiermaschine, aufbauend auf einer Schar von Kettfäden und drei Lagen von Schußfäden, die durch diese Kettfäden verbunden sind, dadurch gekennzeichnet, daß die in Gruppen zusaπmengefaßten Schußfäden (z.B. 15,17,18,21 ;16,20;19) durch die oberen zwei Lagen durchlaufende Kettfäden (!', 3') und alle drei Lagen durchlaufende Kettfäden (2', 4') gebunden sind.1. Fabric made of st-off monofilaments for use as drainage sieve in a paper machine, based on a group of warp threads and three layers of weft threads which are connected by these warp threads, characterized in that the weft threads combined in groups (e.g. 15,17,18,21; 16,20; 19) through the upper two layers of continuous warp threads (! ', 3') and all three layers of continuous warp threads (2 ', 4') are bound.
2. Gewebe nach Anspruch 1, dadurch gekennzeichnet , daß jeder Schußfaden der unteren Lage (z.B. 5) von zwei vorzugsweise nicht nebeneinander liegenden Kettfäden (10', 12') von unten erfaßt wird und gegen die zwischen dem Schußfaden der mittleren Lage (6) und ihm selbst liegenden Kettfäden (1', 3', 6', 8', 13') als Auflage hochgezogen wird, sodaß der zur Siebaußenseite hin gerichtete Bcgen maxirral ausgebildet werden kann.2. Fabric according to claim 1, characterized in that each weft thread of the lower layer (eg 5) of two preferably not adjacent warp threads (10 ', 12') is grasped from below and against the between the weft thread of the middle layer (6) and the warp threads (1 ', 3', 6 ', 8', 13 ') lying on it itself are pulled up as a support, so that the arch directed towards the outside of the sieve can be formed to a maximum.
3. Gewebe nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß jeweils vier Schußfäden der oberen Lage (z.B. 1, 3, 4, 7) mit zwei Schußfäden der mittleren Lage (z.B. 2, 6) und einem Schußfaden der unteren Lage (5) eine Gruppe bilden, wobei von zwei nebeneinander liegenden Kettfäden (1', 2') ein Faden (2' ) von den Schußfäden der oberen Lage zwei (3 und 4) oberhalb, einen (7) unterhalb, und zwei (8, 10) oberhalb abbindet, dann die mittlere Lage passiert und den Schußfaden der unteren Lage (19) der dritten Gruppe unten passiert, sodann wieder nach der halben Rapportlänge die obere Lage (28, 29, 31, 32, 35) wie zuvor abbindet, dann durch die mittlere Lage läuft und den unteren Schußfaden der siebenten Gruppe (47) abbindet, während jeder zweite Kettfaden (z.B.l') im Rapportanstieg versetzt die obere Lage (17, 18, 21, 22, 24) bindet, dann aber unter den Schußfäden der mittleren Lage (30, 34) und in der zweiten Rapporthälfte gleichartig verläuft. 3. Fabric according to claims 1 and 2, characterized in that four wefts of the upper layer (eg 1, 3, 4, 7) with two wefts of the middle layer (eg 2, 6) and a weft of the lower layer (5th ) form a group, with two warp threads (1 ', 2') lying next to each other, one thread (2 ') from the weft threads of the upper layer two (3 and 4) above, one (7) below, and two (8, 10 ) sets above, then passes through the middle layer and passes through the weft thread of the lower layer (19) of the third group below, then again after half the repeat length sets the upper layer (28, 29, 31, 32, 35) as before, then through the middle layer runs and ties the lower weft thread of the seventh group (47), while every second warp thread (eg 1 '), offset in the repeat increase, ties the upper layer (17, 18, 21, 22, 24), but then under the weft threads of the middle one Location (30, 34) and the same in the second half of the repeat.
4. Gewebe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Wert A = 10 - Schußzahl pro cm x Schußdurchmesser in πrn in der oberen Lage 2_wi sehen 3,2 und 4,5, in der mittleren Lage zwischen 5,1 und 5,2 und in der unteren Lage zwischen 6,2 und 7 beträgt. 4. Fabric according to one of claims 1 to 3, characterized in that the value A = 10 - number of wefts per cm x weft diameter in πrn in the upper layer 2_wi see 3.2 and 4.5, in the middle layer between 5.1 and 5.2 and in the lower layer between 6.2 and 7.
5. Gewebe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet , daß die Schußfäden der mittleren Lage aus einem hochmolekularen Polyesteπmterial mit einer Bruchdehnung kleiner als 30% und einem Viskositätsindex des Polymers über 0,90 bestehen.5. Fabric according to one of claims 1 to 4, characterized in that the wefts of the middle layer consist of a high molecular weight Polyesteπmterial with an elongation at break less than 30% and a viscosity index of the polymer over 0.90.
6. Gewebe nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet , daß die Schaftzahl 14 oder 16 beträgt. 6. Tissue according to one of claims 1 to 5, characterized in that the number of shafts is 14 or 16.
EP91908667A 1990-05-08 1991-04-23 Woven fabric made of synthetic monofilaments for use as a dewatering screen in a paper-manufacturing machine Expired - Lifetime EP0528852B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT1037/90A AT393521B (en) 1990-05-08 1990-05-08 PLASTIC MONOFILAMENT FABRICS FOR USE AS A DRAINAGE SCREEN OF A PAPER MACHINE
AT1037/90 1990-05-08
PCT/AT1991/000060 WO1991017292A1 (en) 1990-05-08 1991-04-23 Woven fabric made of synthetic monofilaments for use as a dewatering screen in a paper-manufacturing machine

Publications (2)

Publication Number Publication Date
EP0528852A1 true EP0528852A1 (en) 1993-03-03
EP0528852B1 EP0528852B1 (en) 1994-07-13

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US (1) US5358014A (en)
EP (1) EP0528852B1 (en)
JP (1) JPH05506894A (en)
AT (2) AT393521B (en)
CA (1) CA2080811A1 (en)
DE (1) DE59102193D1 (en)
WO (1) WO1991017292A1 (en)

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Also Published As

Publication number Publication date
DE59102193D1 (en) 1994-08-18
CA2080811A1 (en) 1991-11-09
US5358014A (en) 1994-10-25
ATE108495T1 (en) 1994-07-15
WO1991017292A1 (en) 1991-11-14
JPH05506894A (en) 1993-10-07
AT393521B (en) 1991-11-11
EP0528852B1 (en) 1994-07-13
ATA103790A (en) 1991-04-15

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