EP0554336B1 - Textile for use as a paper machine - Google Patents

Textile for use as a paper machine Download PDF

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Publication number
EP0554336B1
EP0554336B1 EP91919258A EP91919258A EP0554336B1 EP 0554336 B1 EP0554336 B1 EP 0554336B1 EP 91919258 A EP91919258 A EP 91919258A EP 91919258 A EP91919258 A EP 91919258A EP 0554336 B1 EP0554336 B1 EP 0554336B1
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EP
European Patent Office
Prior art keywords
weft
ply
threads
warp
weft threads
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Expired - Lifetime
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EP91919258A
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German (de)
French (fr)
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EP0554336A1 (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 EP0554336A1 publication Critical patent/EP0554336A1/en
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    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00Wet end of machines for making continuous webs of paper
    • D21F1/0027Screen-cloths
    • D21F1/0036Multi-layer screen-cloths

Definitions

  • the invention relates to a fabric for use as paper machine clothing, with three weft layers, which are tied by a family of warp threads, the binding of the middle weft layer being carried out with the same warp thread system, which also binds the upper and lower layers.
  • a fabric is e.g. through the applicant's AT-PS 386.026.
  • Fabrics for use as paper machine clothing consisting of plastic monofilaments, have been made with two weft layers for several years. It is thus possible to design the barrel side so that the weft protrudes over the warp threads (weft runner) and is thus used as an abrasion carrier.
  • the mechanical longitudinal strength of the fabric is only weakened towards the end of the term, so that longer terms are achieved compared to the earlier single-layer fabric or screen constructions.
  • the paper side can be adapted to the requirements of sheet formation by means of different bindings of the warp threads with the upper layer of the weft threads, so that a longitudinal or transverse orientation of the surface supporting the nonwoven fabric arises and thus the sheet formation process and the sheet removal can be influenced.
  • the abrasion resistance of the fabrics is increased when the volume of the lower weft layer, which is in contact with the running elements of the paper machine, is increased. This can be done by increasing the diameter and the float length. By doubling the number of shafts of conventional double-layer screens from 7 or 8 to 14 or 16, the float length of the lower wefts can be increased. By tying the weft threads of this layer with two warp threads that lie quite close to one another, the diameter can also be increased, sufficient crimping of these reinforced weft threads being achieved, so that abrasion on the warp threads only occurs after the weft threads have been largely worn off. These strong weft arcs have the disadvantage, however, that microturbulence occurs on the underside of the fabric when running over the drainage elements, which leads to a dynamic drainage marking, which is particularly noticeable at higher speeds and thinner sheet weights.
  • the aim of the invention is therefore to create a tissue of the type mentioned in the introduction in which no troublesome microturbulence occurs.
  • the arrangement according to the invention dampens the effect of the microturbulence of the running weft in the upward direction on the underside of the fleece, but also controls the passage of water.
  • the size of the diameter of the middle weft layer lies between the diameters of the weft threads of the upper and lower layer.
  • the threads of the lower layer are each tied by two warp threads separated only by a warp thread.
  • the number of shafts is 14 or 16 and the weft threads of the upper layer are overflowed and undershot by the warp threads in rhythm 2-1-2 or the floating of the chain in the upper layer extends over three weft threads before the thread into the interior of the tissue to bind the middle and lower layers.
  • FIG. 1 and 2 show an embodiment in the warp and weft directions and FIG. 3 shows another embodiment in the warp direction.
  • a fabric with 60 warp threads / cm in 14-thread weave with a diameter of 0.17 mm in the upper weft layer 1 alternately has 38 weft threads / cm with a diameter of 0.16 / 0.17 mm.
  • the weft thread of the middle weft position 2 is 0.20 mm thick, the weft thread of the lower weft layer 3 0.30 mm; 19 threads / cm are arranged in each of these two layers.
  • the chain K 1 binds over the weft 3 1 of the lower layer 3 according to FIG. 1 from the upper layer 1 in rhythm 2/1/2 and then runs inside the fabric to tie the weft 3 5 of the lower layer 3 below.
  • This weft thread 35 is also tied off from the next but one warp thread K 3, so that, according to FIG.
  • the control of the effect of the turbulence and the dewatering performance of the screen construction can now be carried out by changing the diameter of the weft thread of the middle layer, the applicable diameter range in this example being from 0.17 to 0.30 mm, that is to say the weft diameters used for the upper and lower ones Location is.
  • FIG. 3 Another example shown in FIG. 3 in a 14-strand weave has a fabric whose warp thread count is 60 / cm and whose warp diameter is 0.17 mm.
  • the top layer 11 alternately consists of threads 11 G with diameters 0.18 mm and threads 11 K with diameters 0.12 mm, namely 42 / cm in total.
  • the warp thread K 1 runs above three threads of the upper layer 11 in the repeat and then passes through the middle layer 12 into the interior of the fabric in order to finally tie the lower weft layer 13 as in Example 1.
  • the thread diameters of the middle weft layer 12 and lower weft layer 13 are kept the same as in Example 1, the thread counts are each 21 / cm.
  • the number of warp threads is 44 / cm, the warp thread diameter is 0.23 mm.
  • the wefts of the top layer alternately have a diameter of 0.25 / 0.27 mm, there are 24 / cm.

Abstract

A textile for use in a paper machine has three weft layers (1, 2, 3) joined by a set of warp threads (K). The central weft layer (2) is bound by the same warp system which also joins the upper (1) and lower (3) layers. In order to avoid microturbulence, the weft threads of the central layer (2) lie beneath the even-numbered warp threads (11, 12 ...) of the upper layer (1) and the weft threads of the lower layer (3) lie under the odd-numbered warp threads (11, 12 ...) of the upper layer (1), so that the weft threads of the central layer (2) are staggered with respect to the warp threads of the lower layer (3) in the direction of the thickness of the textile and in the longitudinal direction.

Description

Die Erfindung bezieht sich auf ein Gewebe zum Einsatz als Papiermaschinenbespannung, mit drei Schußlagen, die durch eine Schar von Kettfäden abgebunden sind, wobei das Einbinden der mittleren Schußlage mit demselben Kettfadensystem erfolgt, das auch die obere und untere Lage abbindet. Ein derartiges Gewebe ist z.B. durch die AT-PS 386.026 der Anmelderin bekannt geworden.The invention relates to a fabric for use as paper machine clothing, with three weft layers, which are tied by a family of warp threads, the binding of the middle weft layer being carried out with the same warp thread system, which also binds the upper and lower layers. Such a fabric is e.g. through the applicant's AT-PS 386.026.

Gewebe für den Einsatz als Papiermaschinenbespannung, bestehend aus Kunststoffmonofilamenten, werden seit mehreren Jahren mit zwei Schußlagen ausgeführt. Es ist damit möglich, die Laufseite so auszubilden, daß der Schußfaden über die Kettfäden vorragt (Schußläufer) und damit als Abriebträger eingesetzt wird. Die mechanische Längsfestigkeit des Gewebes wird dadurch erst gegen Ende der Laufzeit geschwächt, sodaß gegenüber den früheren einlagigen Gewebe- bzw. Siebkonstruktionen längere Laufzeiten erzielt werden.Fabrics for use as paper machine clothing, consisting of plastic monofilaments, have been made with two weft layers for several years. It is thus possible to design the barrel side so that the weft protrudes over the warp threads (weft runner) and is thus used as an abrasion carrier. The mechanical longitudinal strength of the fabric is only weakened towards the end of the term, so that longer terms are achieved compared to the earlier single-layer fabric or screen constructions.

Die Papierseite kann dabei durch unterschiedliche Bindungen der Kettfäden mit der oberen Lage der Schußfäden den Erfordernissen der Blattbildung angepaßt werden, sodaß eine Längs- oder Querorientierung der das Faservlies unterstützenden Oberfläche entsteht und damit der Blattbildungsvorgang und die Blattabnahme beeinflußt werden kann.The paper side can be adapted to the requirements of sheet formation by means of different bindings of the warp threads with the upper layer of the weft threads, so that a longitudinal or transverse orientation of the surface supporting the nonwoven fabric arises and thus the sheet formation process and the sheet removal can be influenced.

Eine Verbesserung dieser zweilagigen Gewebe konnte durch die Anwendung von dreilagigen Geweben erzielt werden, wobei zwei Gewebelagen mit einem Bindefadensystem, das als "dritte Lage" bezeichnet wird, verbunden werden. Die obere Lage ist ein feines Gewebe, das den Faseraufbau bewirkt, die untere Lage ist relativ grob, mit starken Fadendurchmessern ausgeführt, die den Abriebwiderstand erhöhen. Der Nachteil dieser Konstruktion ist das Auftreten von Scherkräften in der Ebene zwischen den beiden Gewebelagen, die den Bindefaden bei Gewebeverformung stark beanspruchen. Es kommt dabei zu einer "inneren Reibung" im Gewebe, die zum Verschleiß an den Berührungspunkten der Bindefäden mit den Gewebelagen führt. Siebe dieser Konstruktion werden oft durch diesen inneren Verschleiß zerstört, bevor sie an der Laufseite abgeschliffen sind.An improvement of these two-ply fabrics could be achieved by using three-ply fabrics, two fabric layers being connected with a binding thread system, which is referred to as the "third layer". The upper layer is a fine fabric that creates the fibers, the lower layer is relatively coarse, with large thread diameters, which increase the abrasion resistance. The disadvantage of this construction is the occurrence of shear forces in the plane between the two fabric layers, which put a lot of strain on the binding thread when the fabric is deformed. There is an "internal friction" in the tissue, which leads to wear at the points of contact of the binding threads with the fabric layers. Sieves of this construction are often destroyed by this internal wear before they are ground down on the barrel side.

Allgemein kann festgestellt werden, daß die Abriebbeständigkeit der Gewebe dann erhöht wird, wenn das Volumen der unteren Schußlage, die mit den Laufelementen der Papiermaschine in Kontakt ist, vergrößert wird. Dies kann durch Erhöhung des Durchmessers und der Flottierungslänge erfolgen. Durch Verdoppelung der Schaftzahl der konventionellen doppellagigen Siebe von 7 oder 8 auf 14 oder 16 kann die Flottierungslänge der unteren Schußfäden erhöht werden. Durch ein Abbinden der Schußfäden dieser Lage mit zwei Kettfäden, die recht nahe aneinanderliegen, kann auch der Durchmesser erhöht werden, wobei ein ausreichendes Durchkrippen dieser verstärkten Schußfäden erreicht wird, sodaß ein Abrieb an den Kettfäden erst nach weitgehendem Abrieb der Schußfäden entsteht.
Diese starken Schußbögen haben allerdings den Nachteil, daß an der Unterseite des Gewebes beim Lauf über die Entwässerungselemente Mikroturbulenzen entstehen, die zu einer dynamischen Entwässerungsmarkierung führen, welche sich vor allem bei höheren Geschwindigkeiten und dünneren Blattgewichten störend bemerkbar macht.
In general, it can be stated that the abrasion resistance of the fabrics is increased when the volume of the lower weft layer, which is in contact with the running elements of the paper machine, is increased. This can be done by increasing the diameter and the float length. By doubling the number of shafts of conventional double-layer screens from 7 or 8 to 14 or 16, the float length of the lower wefts can be increased. By tying the weft threads of this layer with two warp threads that lie quite close to one another, the diameter can also be increased, sufficient crimping of these reinforced weft threads being achieved, so that abrasion on the warp threads only occurs after the weft threads have been largely worn off.
These strong weft arcs have the disadvantage, however, that microturbulence occurs on the underside of the fabric when running over the drainage elements, which leads to a dynamic drainage marking, which is particularly noticeable at higher speeds and thinner sheet weights.

Die Erfindung hat es sich daher zum Ziel gesetzt, ein Gewebe der eingangs genannten Art zu schaffen, bei dem keine störenden Mikroturbulenzen entstehen. Dies wird dadurch erreicht, daß die Schußfäden der mittleren Lage jeweils unter den Schußfäden der oberen Lage mit geraden Nummern, die Schußfäden der unteren Lage unter den Schußfäden der oberen Lage mit den ungeraden Nummern liegen, sodaß die Schußfäden der mittleren Lage in bezug auf die Siebdicke und die Längsrichtung versetzt zu den Schußfäden der unteren Lage angeordnet sind. Durch die erfindungsgemäße Anordnung wird die Wirkung der Mikroturbulenzen des laufseitigen Schußfadens in Richtung nach oben auf die Unterseite des Vlieses gedämpft, aber auch der Wasserdurchtritt gesteuert.The aim of the invention is therefore to create a tissue of the type mentioned in the introduction in which no troublesome microturbulence occurs. This is achieved in that the wefts of the middle layer are each under the wefts of the upper layer with even numbers, the wefts of the lower layer under the wefts of the upper layer with odd numbers, so that the wefts of the middle layer are in relation to the sieve thickness and the longitudinal direction is offset from the wefts of the lower layer. The arrangement according to the invention dampens the effect of the microturbulence of the running weft in the upward direction on the underside of the fleece, but also controls the passage of water.

In manchen Fällen ist es ferner notwendig, den Wasserdurchtritt des Gewebes, besonders in der Primärentwässerungszone, zu steuern, um den Aufbau des Primärvlieses, das für die nachfolgende Entwässerung der Suspension maßgebend ist, zu beieinflussen.In some cases it is also necessary to control the water penetration of the fabric, especially in the primary drainage zone, in order to build up the primary fleece, which is necessary for the subsequent one Drainage of the suspension is crucial to influence.

Um die Entwässerungsleistung des Gewebes zu steuern und die von der unteren Lage herrührenden Mikroturbulenzen in ihrer Auswirkung auf die Blattbildung zu beeinflussen, liegt nach einem weiteren Merkmal der Erfindung die Größe des Durchmessers der mittleren Schußfadenlage zwischen den Durchmessern der Schußfäden der oberen und unteren Lage.In order to control the drainage performance of the fabric and to influence the effect of the microturbulence from the lower layer on the sheet formation, according to a further feature of the invention the size of the diameter of the middle weft layer lies between the diameters of the weft threads of the upper and lower layer.

Um einen langen Bogen für den laufseitigen Abrieb zu erzeugen, sind die Fäden der unteren Lage von jeweils zwei, nur durch einen Kettfaden getrennten Kettfäden abgebunden.In order to produce a long sheet for the abrasion on the running side, the threads of the lower layer are each tied by two warp threads separated only by a warp thread.

Gegenüber einem Gewebe nach der eingangs genannten Patentschrift wird neben dem Vorteil einer Vermeidung bzw. wesentlichen Verminderung von Mikroturbulenzen erreicht, daß für die Fertigung des Gewebes nur ein Kettbaum benötigt wird, wogegen für die Fertigung des bekannten Gewebes, bei dem zwei verschiedene Gruppen von Kettfäden vorliegen, zwei Kettbäume erforderlich sind. Außerdem liegt bei einem erfindungsgemäßen Gewebe im Vergleich zum bekannten Gewebe in der unteren Lage die doppelte schußfadenzahl mit dem Vorteil des höheren Abriebvolumens. Der Mittelschuß kontrolliert dabei durch Variation des Durchmessers dann entsprechend die Dämpfung der Turbulenzen des Unterschusses.Compared to a fabric according to the patent mentioned at the beginning, in addition to the advantage of avoiding or substantially reducing microturbulence, the fact that only one warp beam is required for the manufacture of the fabric is achieved, whereas for the manufacture of the known fabric, in which two different groups of warp threads are present , two warp beams are required. In addition, in the case of a fabric according to the invention, compared to the known fabric in the lower layer, there is twice the number of weft threads with the advantage of the higher abrasion volume. The center shot then controls the damping of the turbulence of the deficit by varying the diameter.

Bei einem zweckmäßigen Ausführungsbeispiel der Erfindung beträgt die Schaftzahl 14 oder 16 und die Schußfäden der oberen Lage werden durch die Kettfäden im Rythmus 2-1-2 über- und unterlaufen oder die Flottierung der Kette in der oberen Lage reicht über drei Schußfäden, ehe der Faden in das Gewebeinnere zum Abbinden der mittleren und unteren Lage verläuft.In an expedient embodiment of the invention, the number of shafts is 14 or 16 and the weft threads of the upper layer are overflowed and undershot by the warp threads in rhythm 2-1-2 or the floating of the chain in the upper layer extends over three weft threads before the thread into the interior of the tissue to bind the middle and lower layers.

Nachstehend ist die Erfindung an Hand von in den Zeichnungen dargestellten Ausführungsbeispielen näher beschrieben. Dabei zeigen die Fig.1 und Fig.2 in Kett- und in Schußrichtung ein Ausführungsbeispiel und Fig.3 stellt in Kettrichtung ein weiteres Ausführungsbeispiel dar.The invention is described in more detail below on the basis of exemplary embodiments illustrated in the drawings. 1 and 2 show an embodiment in the warp and weft directions and FIG. 3 shows another embodiment in the warp direction.

Beispiel 1example 1

Gemäß den Fig.1 und 2 weist ein Gewebe mit 60 Kettfäden/cm in 14-schäftiger Bindung im Durchmesser 0,17 mm in der oberen Schußlage 1 abwechselnd 38 Schußfäden/cm mit einem Durchmesser von 0,16/0,17 mm auf. Der Schußfaden der mittleren Schußlage 2 ist 0,20 mm stark, der Schußfaden der unteren Schußlage 3 0,30 mm; in jeder dieser beiden Lagen sind 19 Fäden/cm angeordnet.According to FIGS. 1 and 2, a fabric with 60 warp threads / cm in 14-thread weave with a diameter of 0.17 mm in the upper weft layer 1 alternately has 38 weft threads / cm with a diameter of 0.16 / 0.17 mm. The weft thread of the middle weft position 2 is 0.20 mm thick, the weft thread of the lower weft layer 3 0.30 mm; 19 threads / cm are arranged in each of these two layers.

Die Kette K 1 bindet über dem Schußfaden 3₁ der unteren Lage 3 nach der Fig.1 die obere Lage 1 im Rhytmus 2/1/2 ab und verläuft dann im Gewebeinneren, um den Schußfaden 3₅ der unteren Lage 3 unten abzubinden. Dieser Schußfaden 3₅ wird auch vom übernächsten Kettfaden K 3 abgebunden, sodaß nach der Fig.2 ein stark zur Laufseite gerichteter Schußbogen entsteht.The chain K 1 binds over the weft 3 ₁ of the lower layer 3 according to FIG. 1 from the upper layer 1 in rhythm 2/1/2 and then runs inside the fabric to tie the weft 3 ₅ of the lower layer 3 below. This weft thread 3₅ is also tied off from the next but one warp thread K 3, so that, according to FIG.

Die Steuerung der Wirkung der Turbulenzen und der Entwässerungsleistung der Siebkonstruktion kann nun durch Veränderung des Durchmessers des Schußfadens der mittleren Lage erfolgen, wobei der anwendbare Durchmesserbereich in diesem Beispiel von 0,17 bis 0,30 mm, also den verwendeten Schußdurchmessern der oberen bzw. unteren Lage liegt.The control of the effect of the turbulence and the dewatering performance of the screen construction can now be carried out by changing the diameter of the weft thread of the middle layer, the applicable diameter range in this example being from 0.17 to 0.30 mm, that is to say the weft diameters used for the upper and lower ones Location is.

Beispiel 2Example 2

Ein anderes, in Fig.3 gezeigtes Beispiel in 14-schäftiger Bindung weist ein Gewebe auf, dessen Kettfadenzahl 60/cm und dessen Kettdurchmesser 0,17 mm beträgt. Hier besteht die obere Lage 11 abwechselnd aus Fäden 11G mit Durchmessern 0,18 mm und Fäden 11K mit Durchmessern 0,12 mm, und zwar 42/cm insgesamt. Der Kettfaden K 1 verläuft oberhalb von drei Fäden der oberen Lage 11 im Rapport und geht dann durch die mittlere Lage 12 in das Gewebeinnere, um letzlich die untere Schußlage 13 wie im Beispiel 1 abzubinden. Die Fadendurchmesser der mittleren Schußlage 12 und unteren Schußlage 13 sind gleichgehalten wie im Beispiel 1, die Fadenzahlen betragen je 21/cm.Another example shown in FIG. 3 in a 14-strand weave has a fabric whose warp thread count is 60 / cm and whose warp diameter is 0.17 mm. Here, the top layer 11 alternately consists of threads 11 G with diameters 0.18 mm and threads 11 K with diameters 0.12 mm, namely 42 / cm in total. The warp thread K 1 runs above three threads of the upper layer 11 in the repeat and then passes through the middle layer 12 into the interior of the fabric in order to finally tie the lower weft layer 13 as in Example 1. The thread diameters of the middle weft layer 12 and lower weft layer 13 are kept the same as in Example 1, the thread counts are each 21 / cm.

Beispiel 3Example 3

Bei einem vierzehnschäftigen Gewebe beträgt die Kettfadenzahl 44/cm, der Kettfadendurchmesser 0,23 mm. Die Schußfäden der oberen Lage haben abwechselnd die Durchmesser 0,25/0,27 mm, es sind 24/cm vorhanden.In the case of a fourteen-shaft fabric, the number of warp threads is 44 / cm, the warp thread diameter is 0.23 mm. The wefts of the top layer alternately have a diameter of 0.25 / 0.27 mm, there are 24 / cm.

In der mittleren Lage werden 12 Fäden/cm mit 0,30 mm Durchmesser, in der unteren Lage 12 Fäden/cm mit 0,40 mm eingeschlagen. Das Bindungsbild ist gleich wie bei Beispiel 1.In the middle layer 12 threads / cm with a diameter of 0.30 mm are knocked in, in the lower layer 12 threads / cm with 0.40 mm. The bond pattern is the same as in Example 1.

Claims (4)

  1. Fabric covering for insertion into a paper machine, with three weft plies (1, 2, 3) bound by one group of warp threads (K1, K2, K3), in which the middle weft ply (2) is bound by the same warp thread system that binds the top (1) and bottom (3) ply, characterized in that the weft threads of the middle ply (2) are situated below the even-numbered weft threads (1₁, 1₂, ...) of the top ply (1) while the weft threads of the bottom ply (3) are situated below the odd-numbered weft threads (1₁, 1₂, ...) of the top ply (1), so that the weft threads of the middle ply (2) are displaced, regarding fabric thickness and longitudinal orientation, with respect the weft threads of the bottom ply (3).
  2. Fabric according to Claim 1, characterized in that the diameter size of the middle weft thread ply (2) is of a dimension between that of the diameters of the weft threads of the top (1) and bottom (3) plies so as to control the dehydrating performance of the fabric and to influence the effect of the micro-turbulences caused by the bottom ply (3) on sheet formation.
  3. Fabric according to Claims 1 or 2, characterized in that the weft threads of the bottom ply (3) are bound by two warp threads (K2, K3) each, which are separated by only one warp thread (K1) so as to generate a long curve facing the outside of the machine.
  4. Fabric according to one of the Claims 1 to 3, characterized in that the heald shaft number is 14 or 16, and the warp threads (K1, ...) pass above and below the weft threads (1₁, 1₂, ...) of the top ply (1) with a pattern of 1-2-1, or that the floating of the warp in the top ply (1) spans three weft threads before the thread passes into the inside of the screen in order to bind the middle (2) and bottom (3) plies.
EP91919258A 1990-10-25 1991-10-17 Textile for use as a paper machine Expired - Lifetime EP0554336B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0216090A AT394869B (en) 1990-10-25 1990-10-25 FABRICS FOR USE AS PAPER MACHINE COVERING
AT2160/90 1990-10-25
PCT/AT1991/000111 WO1992008000A1 (en) 1990-10-25 1991-10-17 Textile for use as a paper machine

Publications (2)

Publication Number Publication Date
EP0554336A1 EP0554336A1 (en) 1993-08-11
EP0554336B1 true EP0554336B1 (en) 1994-12-28

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EP91919258A Expired - Lifetime EP0554336B1 (en) 1990-10-25 1991-10-17 Textile for use as a paper machine

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EP (1) EP0554336B1 (en)
AT (1) AT394869B (en)
DE (1) DE59104097D1 (en)
WO (1) WO1992008000A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT400854B (en) * 1994-07-01 1996-04-25 Hutter & Schrantz Papiermaschi FABRICS FOR USE AS PAPER MACHINE COVERING

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3224187C2 (en) * 1982-06-29 1989-01-12 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Bandage fabric as a covering for the sheet forming area of a paper machine
DE3426264A1 (en) * 1984-07-17 1986-01-30 Franz F. 5160 Düren Kufferath DRAINAGE TAPE FOR PRESSES IN THE WET OF A PAPER MACHINE
EP0224276B1 (en) * 1986-05-06 1990-03-28 Hermann Wangner GmbH & Co. KG Screen cloth for the wet end of a paper-making machine
US4709732A (en) * 1986-05-13 1987-12-01 Huyck Corporation Fourteen harness dual layer weave
AT386026B (en) * 1986-05-15 1988-06-27 Hutter & Schrantz Ag Multilayer fabric made of plastic monofilaments
FI78329B (en) * 1987-02-10 1989-03-31 Tamfelt Oy Ab PAPPERSMASKINDUK.

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ATA216090A (en) 1991-12-15
AT394869B (en) 1992-07-10
DE59104097D1 (en) 1995-02-09
EP0554336A1 (en) 1993-08-11
WO1992008000A1 (en) 1992-05-14

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