EP0224276A2 - Screen cloth for the wet end of a paper-making machine - Google Patents

Screen cloth for the wet end of a paper-making machine Download PDF

Info

Publication number
EP0224276A2
EP0224276A2 EP86117588A EP86117588A EP0224276A2 EP 0224276 A2 EP0224276 A2 EP 0224276A2 EP 86117588 A EP86117588 A EP 86117588A EP 86117588 A EP86117588 A EP 86117588A EP 0224276 A2 EP0224276 A2 EP 0224276A2
Authority
EP
European Patent Office
Prior art keywords
threads
longitudinal
transverse
transverse threads
upper layer
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
EP86117588A
Other languages
German (de)
French (fr)
Other versions
EP0224276B1 (en
EP0224276A3 (en
Inventor
Georg Borel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Herman Wangner GmbH and Co KG
Original Assignee
Herman Wangner GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25843524&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0224276(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE19863615304 external-priority patent/DE3615304A1/en
Application filed by Herman Wangner GmbH and Co KG filed Critical Herman Wangner GmbH and Co KG
Priority to AT86117588T priority Critical patent/ATE51427T1/en
Publication of EP0224276A2 publication Critical patent/EP0224276A2/en
Publication of EP0224276A3 publication Critical patent/EP0224276A3/en
Application granted granted Critical
Publication of EP0224276B1 publication Critical patent/EP0224276B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D21F1/0045—Triple layer fabrics

Definitions

  • the invention relates to a covering for the sheet-forming part of a paper machine, which is formed from a double-layer fabric with an upper and lower layer of transverse threads which are interwoven with longitudinal threads.
  • the transverse threads of the top layer and the longitudinal threads form bends directed towards the paper side, the highest points of which lie in one plane, the paper plane.
  • the longitudinal threads are bound twice in the upper layer of the transverse threads, and the number of transverse threads in the upper layer is twice as high as in the lower layer.
  • Such double-layered sheet-forming fabrics are known from DE-A-22 63 476, 25 40 490 and 27 06 235 and from EP-A-30 490.
  • the transverse thread density in the upper layer is also twice as high as in the lower layer.
  • the marking properties are achieved by extremely long shot floats, i.e. Cross thread floats, improved.
  • EP-A-30 490 as well as according to US-A-4 333 502, attempts are being made to achieve the same goal with long warp floats.
  • the invention has the object of providing a covering for the B latt Struktursteil to provide a paper machine having a particularly high labeling freedom.
  • this object is achieved in that first transverse threads of the upper layer having the paper plane tangent to offsets, which are supported in a Abkröpfungssattel a longitudinal thread, and in that alternately to the first transverse threads disposed second transverse threads of the upper layer has cranks b-plane of the paper tangent A, which are supported by two adjacent longitudinal threads, one of which rises from the inside of the fabric to the plane of the paper, while the other descends from the plane of the paper into the inside of the fabric.
  • a transverse thread is supported by an offset saddle of a longitudinal thread, the longitudinal thread runs under the relevant transverse thread, while it is guided over the preceding and the subsequent transverse thread. A resulting force acts on the cross thread and is directed upwards.
  • the first transverse threads of the upper layer are supported in this way.
  • the first Q are alternately arranged with the second transverse threads of the upper layer.
  • the second transverse threads are supported by adjacent, scissor-like longitudinal threads, ie one of the two longitudinal threads rises from the inside of the fabric to the plane of the paper, while the other descends from the plane of the paper into the inside of the fabric.
  • a support not only a force pointing upwards to the paper plane acts on a transverse thread, but also a torque which rotates it in the paper plane out of the transverse direction.
  • the longitudinal threads are guided directly before and after each cranking saddle over two transverse threads of the upper layer and adjacent longitudinal threads are offset in the longitudinal direction by six transverse threads of the upper layer.
  • the transverse threads of the lower layer are stronger than those of the upper layer to improve the abrasion resistance.
  • the abrasion resistance can be further improved if some of the transverse threads in the lower layer consist of a particularly abrasion-resistant material, for example polyamide.
  • the web process has not yet achieved a monoplanarity on the paper side. Only by thermofixing the fabric under longitudinal stretching is it achieved that the uppermost points of the offsets of the longitudinal threads and the transverse threads lie in one plane on the paper side, as is generally known.
  • the monoplanarity can be Open weave in general is more likely to reach than with endless weave.
  • the double-layer covering has an upper layer 1 of first transverse threads 3 and second transverse threads 4, which alternate with one another, and a lower layer 2 of transverse threads 5.
  • Longitudinal threads 6 are interwoven with the transverse threads 3, 4 of the upper layer 1 and the lower layer 2 and connect the two layers.
  • the transverse thread density in the upper layer 1 is twice as high as in the lower layer 2, and the covering is woven in such a way that the second transverse threads 4 of the upper layer 1 come to lie as precisely as possible over the transverse threads of the lower layer 2.
  • each longitudinal thread 6 is bound twice into the upper layer 1 by being looped in sequence over two transverse threads 3, 4 under a first transverse thread 3 and again over two transverse threads 4, 3.
  • the longitudinal thread 6 therefore forms a saddle, by means of which a first transverse thread 3 is supported, with essentially only an upward force acting on the transverse thread 3.
  • the longitudinal thread 6 runs over a distance of four transverse threads 3, 4 of the upper layer 1 or two transverse threads 5 of the lower layer 2 between the two layers 1, 2 and is then passed under a transverse thread 5 of the lower layer 2, so that it is also woven with the lower layer 2. It then runs again between the two layers 1, 2 until it rises again to the top within the next binding repeat.
  • adjacent longitudinal threads 6 are offset in the longitudinal direction by six transverse threads 3, 4 each of the upper layer 1. As can be seen in FIG. 1, adjacent longitudinal threads 6 therefore intersect below a second transverse thread 4 of the upper layer 1. This leads to a scissor-like support of this second transverse thread 4, by means of which the second transverse thread 4 is not only pressed upwards, but at the same time in the tissue plane is slightly rotated out of the transverse direction.
  • the bent portions 8 of the second transverse threads are not therefore parallel to the A-b cranks 7 of the first transverse threads 3 of the top sheet. 1
  • the weave of Figures 1 to 3 is a 7-strand weave, since it repeats itself after seven transverse threads 5 of the lower layer 2 and seven longitudinal threads 6.
  • a weave repeat thus comprises seven transverse threads 5 of the lower layer 2 and seven longitudinal threads 6 and fourteen transverse threads 3, 4 of the upper layer 1.
  • the first transverse threads 3 and the second transverse threads 4 can be made of the same material and have the same dimensions.
  • a softer material is preferably selected in connection with a larger diameter, so that the offsets 8 of these transverse threads 4 run at a larger angle to the transverse direction, which for the Labeling freedom can be advantageous.
  • Figures 4 to 6 show an embodiment analogous to that of Figures 1 to 3, but with an 8-strand binding.
  • Each longitudinal thread 6 in turn forms two offsets 9 in the upper layer 1, which are separated by an intermediate first transverse thread 3, which has an offset 7 extending in the transverse direction at this point.
  • the offsets 8 of the second transverse threads 4 again run at an angle to the transverse direction, since the second transverse threads 4 are supported in a scissor-like manner by adjacent longitudinal threads 6, which are offset from one another by six transverse threads.
  • each longitudinal thread 6 it is also possible to separate the two offsets 9 of each longitudinal thread 6 from one another not by a transverse thread 3, but by a total of three or five transverse threads of the upper layer 1.
  • the two different types of offsets are formed in each transverse thread of the upper layer 1 and run obliquely to one another. If the offsets 9 are separated by five transverse threads of the upper layer 1, the transverse threads float over four longitudinal threads and there is only a single type of offset, so that there is no longer any improvement with regard to the freedom of marking.
  • Figures 3 and 6 show the weave cartridges for the embodiments of Figures 1 and 2 or 4 and 5.
  • the numbers 1 to 7 of Fig. 3 and 1 to 8 of Fig. 6 at the bottom refer to the longitudinal threads, and the numbers 1 to 21 and 1 to 24 on the side edge refer to the cross threads of a repeat.
  • the transverse threads with the numbers 1, 4, 7, 10, etc. relate to the first transverse threads 3 supported by an offset saddle of a longitudinal thread, while the transverse threads with the numbers 2, 5, 8, etc. refer to the second transverse threads supported by scissor-shaped warp threads 4 concern.
  • the cross threads with the numbers 3, 6, 9, etc. relate to transverse threads 5 of the bottom layer 2.
  • the transverse threads with the numbers 2, 5, 8, 11, etc. belong to the lower layer, while the first transverse threads 3, supported by angled saddle, are designated with the numbers 1, 4, 7, etc., and the scissors-shaped, second transverse threads 4 with numbers 3, 6, 9, etc.
  • Each individual square of the Webpatrone provides a K Reuter wetting point between a longitudinal and a transverse thread is.
  • Black Filled squares thereby indicate that the longitudinal thread overlies the transverse thread, while white squares indicate that the transverse threads of the upper layer 1 via the longitudinal threads 6 run.
  • the squares with a black dot indicate that the transverse threads of the lower layer 2, viewed from the paper side, lie over the longitudinal threads 6.
  • the covering according to the invention is generally woven and heat-set in such a way that a longitudinal thread density of between 90 and 110% results.
  • a typical value for the longitudinal thread density is between 100 and 105%. However, lower values are appropriately chosen for tissue papers.
  • the papermaker's fabric as described herein can EP-A-0 are 048,962 also carried out accordingly, that only part of the longitudinal threads is included in the lower layer 2 of the transverse threads 5 6, while the remaining L ijnsfäden 16 only with the weft wires 3, 4 of upper layer 1 are woven so that they are not exposed to abrasion on the running side.
  • Such embodiments of the paper machine clothing according to the invention are shown in section in FIGS. 7 and 9.
  • the embodiment shown in FIG. 7 largely corresponds to that of FIG. 1, and the only difference is that every second longitudinal thread 16 is not woven into the lower layer 2.
  • Another ratio of the longitudinal threads 6 to the longitudinal threads 16 can also be selected.
  • the longitudinal threads 6 are bound twice in the upper layer 1 and once in the lower layer 2 within each weave repeat.
  • the longitudinal threads 16 are bound twice in the upper layer 1 within each weave repeat, but never in the lower layer 2. This results in very long transverse thread floats on the running side, namely those with 13 longitudinal threads, as shown in FIG. 8. There is no difference on the paper side compared to the embodiment of FIGS. 1 and 2.
  • FIGS. 9 and 10 show an embodiment of the paper machine clothing in which the one warp threads 6 are bound twice in the upper layer 1 and twice in the lower layer 2 within each weave repeat.
  • the other longitudinal threads 16 are bound twice in the upper layer 1 within each weave repeat, but never in the lower layer 2. This results in shorter transverse thread floats on the running side, namely those with 7 longitudinal threads, as shown in FIG. 10.
  • the paper side of this embodiment corresponds to that of FIGS. 4 and 5, since there are no differences with regard to the integration in the upper layer 1.
  • the paper machine clothing according to the invention can be designed in accordance with EP-A-0 120 337 so that the weave pattern in the two halves of the fabric separated by the longitudinal center line is mirror-symmetrical and the weave points form a V-pattern in the weave with a weave diagonal breaking in the middle of the weave.
  • the lateral running or A bdrif- th the running paper machine clothing in the paper machine is prevented.
  • Excessively long floats of the transverse threads are prevented by additional longitudinal threads 26 in the middle of the fabric, so that no substantially longer floats of the transverse threads occur at the boundary line of the two fabric halves than in the remaining fabric.
  • 11 shows a plan view of a section of such a paper machine clothing including some additional longitudinal threads 26.
  • F ig. 12 shows in longitudinal section an embodiment in which three layers of transverse threads are provided.
  • the upper layer 21 and the middle layer 22 of the transverse threads are interwoven with the longitudinal threads 6 as shown in FIG. 1 for the upper layer 1 and the lower layer 2.
  • the backsheet 23 of the transverse threads of FIG. 12 is an additional layer of transverse threads 25, which is woven with 27 of the middle layer 22 of the transverse threads 5 ssensfäden means of additional L. Overall, therefore, each longitudinal thread is only woven with the transverse threads of two successive layers.
  • the transverse threads 25 of the lower layer 23 expediently correspond in their arrangement to the transverse threads 5 of the middle layer 22.
  • Such a composite fabric is described and illustrated in detail in DE-A-32 25 599.
  • the paper side of this embodiment is as shown in FIG. 2.
  • a covering with a 7-shaft binding according to FIGS. 1 to 3 is produced in an open weave.
  • the longitudinal threads consist of polyester monofilament with a high modulus of elasticity and a diameter of 0.15 mm. After heat setting, the longitudinal thread density is 71 wires / cm.
  • the first transverse threads 3 of the top sheet 1 are polyester onofile M of 0.17 mm in diameter and have an average modulus of elasticity (elongation 19% at a load of 27 cN / tex).
  • the second transverse threads 4 are polyester monofilaments with a diameter of 0.185 mm and have a relatively low modulus of elasticity (elongation 23.4% at a load of 27 cN / tex).
  • the cross thread density in the top layer 1 is a total of 36 / cm.
  • the transverse threads 5 of the lower layer 2, which form the running side, are alternately particularly soft polyester monofilaments (elongation 23.4% with a load of 27 ' cN / tex) of 0.20 mm and soft polyamide 6 monofilaments of 0 , 21 mm in diameter, and after heat setting, the cross thread density in the lower layer 2 is a total of 18 / cm.
  • the fabric is heat-set in such a way that the bends 7 and 8 of the first transverse threads 3 and the second transverse threads 4 and the bends 9 of the longitudinal threads 6 lie in one plane on the paper side, so that the fabric is monoplan.
  • a covering with an 8-strand binding according to FIGS. 4 to 6 is produced in an open weave and, after being fixed, is made endless with a woven seam.
  • the fabric is woven with a longitudinal thread count of 54 / cm. During heat setting, the number of longitudinal threads increases to 60 / cm due to the transverse contraction of the fabric.
  • the longitudinal threads consist of polyester monofilament with a diameter of 0.17 mm and a longitudinally stable quality with a high modulus of elasticity.
  • the transverse threads 3 of the upper layer consist of polyester monofilament of 0.17 mm diameter with a relatively hard weft quality (type Trevira 902 with a relatively high modulus of elasticity for weft wires corresponding to an elongation of 8.5% under a load of 27 cN / tex).
  • the second weft threads 4 of the top sheet 1 are also polyester M onofile, however, 900 mm from the softer Type Trevira corresponding to an elongation of 23.4% at 27 cN / tex and a diameter of 0.20.
  • This fabric is woven with a transverse thread density of 35 / cm, wherein the T by the number of transverse threads hermofix Schlmofix Schlmofix Schlmofix Schlmofix Schlmofix Schlmofix Schlmofix Schlmofix Schlmofix Schlmofix Schlmofix Schlmofix Schlmofix Schlmofix Schlmofix Schlmofix Schlmofix Schlmofix Schlmofix Schlmofix Schl at 32 / cm in the upper layer 1 and at 16 / cm decreased in the lower tier.
  • the transverse threads 5 of the lower layer 2 are alternately polyester monofilaments with a diameter of 0.22 mm of the soft type Trevira 900 corresponding to an elongation of 23.5% at 27 cN / tex and polyamide monofilaments of the type PA 6.6 with a diameter of 0, 24 mm.
  • the fabric is fixed at 195 * C, whereby a maximum longitudinal tension of 95 N / cm is reached.
  • the longitudinal thread floats and the floats of the first transverse threads 3 and the second transverse threads 4 directed towards the paper side are all in one plane.
  • the longitudinal thread 6 forces the transverse threads 5 to bend strongly, so that in the finished covering alone, the floats of the transverse threads 5 form the outside, ie the running side, of the fabric in the lower layer 2.

Abstract

1. A clothing for the sheet-forming section of a papermaking machine, said clothing comprising an upper and a lower layer (1, 2) of transverse threads (3, 4, 5) interwoven with longitudinal threads (6), within each weave repeat each longitudinal thread (6) being interwoven two times with the upper layer (1) of transverse threads (3, 4), the transverse threads (3, 4) of the upper layer (1) and the longitudinal threads (6) forming crimps (7, 8, 9) disposed in a plane, the paper plane (10), and the crimps (7) tangential to the paper plane (10) of first transverse threads (3) of the upper layer (1) being supported in a crimp saddle of the longitudinal threads (6), and the crimps (8) tangential to the paper plane of second transverse threads (4) of the upper layer (1) being supported by two adjacent longitudinal threads (6) one of which ascends from the fabric interior to the paper plane (10), while the other one descends from the paper plane (10) into the fabric interior characterized in that the first transverse threads (3) and the second transverse threads (4) are arranged in alternating sequence.

Description

Die Erfindung betrifft eine Bespannung für den Blattbildungsteil einer Papiermaschine, die aus einem doppellagigen Gewebe mit einer oberen und unteren Lage von Querfäden gebildet ist, die mit Längsfäden verwebt sind. Die Querfäden der oberen Lage und die Längsfäden bilden dabei zur Papierseite hin gerichtete Abkröpfungen, deren höchste Punkte in einer Ebene, der Papierebene, liegen. Innerhalb jedes Bindungsrapports sind die Längsfäden zweimal in die obere Lage der Querfäden eingebunden, und die Querfadenzahl ist in der oberen Lage doppelt so hoch wie in der unteren Lage.The invention relates to a covering for the sheet-forming part of a paper machine, which is formed from a double-layer fabric with an upper and lower layer of transverse threads which are interwoven with longitudinal threads. The transverse threads of the top layer and the longitudinal threads form bends directed towards the paper side, the highest points of which lie in one plane, the paper plane. Within each weave repeat, the longitudinal threads are bound twice in the upper layer of the transverse threads, and the number of transverse threads in the upper layer is twice as high as in the lower layer.

Derartige doppellagige Blattbildungsgewebe sind aus DE-A-22 63 476, 25 40 490 und 27 06 235 sowie aus EP-A-30 490 bekannt. Bei dem in Fig. 2F von DE-A-27 06 235 dargestellten Gewebe ist dabei auch die Querfadendichte in der oberen Lage doppelt so hoch wie in der unteren Lage. Obwohl derartige Blattbildungssiebe gegenüber einlagigen Blattbildungssieben verbesserte Markierungseigenschaften haben, sind sie dennoch zur Herstellung extrem markierungsempfindlicher Papiersorten nicht geeignet.Such double-layered sheet-forming fabrics are known from DE-A-22 63 476, 25 40 490 and 27 06 235 and from EP-A-30 490. In the fabric shown in FIG. 2F of DE-A-27 06 235, the transverse thread density in the upper layer is also twice as high as in the lower layer. Although such sheet forming screens have improved marking properties compared to single-layer sheet forming screens, they are nevertheless not suitable for producing extremely marking-sensitive paper types.

Nach DE-A-27 06 235 werden die Markierungseigenschaften durch extrem lange Schußflottungen, d.h. Querfadenflottungen, verbessert. Nach EP-A-30 490 ebenso wie nach US-A-4 333 502 wird versucht, das gleiche Ziel mit langen Kettflottungen zu erreichen.According to DE-A-27 06 235, the marking properties are achieved by extremely long shot floats, i.e. Cross thread floats, improved. According to EP-A-30 490 as well as according to US-A-4 333 502, attempts are being made to achieve the same goal with long warp floats.

Ausgehend von der DE-A-27 06 235, Fig. 2F, liegt der Erfindung die Aufgabe zugrunde, eine Bespannung für den Blattbildungsteil einer Papiermaschine zu schaffen, die eine besonders hohe Markierungsfreiheit besitzt.Starting from DE-A-27 06 235 Fig. 2F, the invention has the object of providing a covering for the B lattbildungsteil to provide a paper machine having a particularly high labeling freedom.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß erste Querfäden der oberen Lage die Papierebene tangierende Abkröpfungen aufweisen, die in einem Abkröpfungssattel eines Längsfadens abgestützt sind, und daß alternierend zu den ersten Querfäden angeordnete zweite Querfäden der oberen Lage die Papierebene tangierende Ab-kröpfungen aufweist, die von zwei benachbarten Längsfäden abgestützt werden, von denen einer aus dem Gewebeinneren zur Papierebene aufsteigt, während der andere von der Papierebene ins Gewebeinnere absteigt.According to the invention this object is achieved in that first transverse threads of the upper layer having the paper plane tangent to offsets, which are supported in a Abkröpfungssattel a longitudinal thread, and in that alternately to the first transverse threads disposed second transverse threads of the upper layer has cranks b-plane of the paper tangent A, which are supported by two adjacent longitudinal threads, one of which rises from the inside of the fabric to the plane of the paper, while the other descends from the plane of the paper into the inside of the fabric.

Wird ein Querfaden durch einen Abkröpfungssattel eines Längsfadens abgestützt, so verläuft der Längsfaden unter dem betreffenden Querfaden, während er über den vorausgehenden und über den nachfolgenden Querfaden geführt ist. Auf den Querfaden wirkt dabei eine resultierende Kraft, die nach oben gerichtet ist. Bei der erfindungsgemäßen Bespannung werden die ersten Querfäden der oberen Lage auf diese Weise abgestützt.If a transverse thread is supported by an offset saddle of a longitudinal thread, the longitudinal thread runs under the relevant transverse thread, while it is guided over the preceding and the subsequent transverse thread. A resulting force acts on the cross thread and is directed upwards. In the covering according to the invention, the first transverse threads of the upper layer are supported in this way.

Die ersten Querfäden sind abwechselnd mit zweiten Querfäden der oberen Lage angeordnet. Die zweiten Querfäden werden von benachbarten, scherenartig verlaufenden Längsfäden abgestützt, d.h., einer der beiden Längsfäden steigt aus dem Gewebeinneren zur Papierebene auf, während der andere von der Papierebene ins Gewebeinnere absteigt. Bei einer derartigen Abstützung wirkt auf einen Querfaden nicht nur eine nach oben zur Papierebene zeigende Kraft, sondern zugleich ein Drehmoment, das ihn in der Papierebene aus der Querrichtung heraus dreht.Uerfäden the first Q are alternately arranged with the second transverse threads of the upper layer. The second transverse threads are supported by adjacent, scissor-like longitudinal threads, ie one of the two longitudinal threads rises from the inside of the fabric to the plane of the paper, while the other descends from the plane of the paper into the inside of the fabric. With such a support, not only a force pointing upwards to the paper plane acts on a transverse thread, but also a torque which rotates it in the paper plane out of the transverse direction.

Durch diese beiden verschiedenen Arten der Abstützung der Querfäden ergibt sich, daß die Flottungen der Querfäden nicht alle parallel ausgerichtet sind, sondern, daß zwei Arten von Querfadenflottungen existieren, die unter einem Winkel zueinander angeordnet sind. Die Regelmäßigkeit der Papiermarkierung wird dadurch zerstört, so daß die Papiermarkierung etwas verschwimmt und weniger auffällt.As a result of these two different types of support for the transverse threads, it follows that the floats of the transverse threads are not all aligned in parallel, but that two types of transverse thread floats exist which are arranged at an angle to one another. This destroys the regularity of the paper marking, so that the paper marking blurs somewhat and is less noticeable.

Nach einer bevorzugten Ausgestaltung der Erfindung sind die Längsfäden unmittelbar vor und nach jedem Abkröpfungssattel über zwei Querfäden der oberen Lage geführt und sind benachbarte Längsfäden um sechs Querfäden der oberen Lage in Längsrichtung gegeneinander versetzt.According to a preferred embodiment of the invention, the longitudinal threads are guided directly before and after each cranking saddle over two transverse threads of the upper layer and adjacent longitudinal threads are offset in the longitudinal direction by six transverse threads of the upper layer.

Hierbei erhält man zahlreiche und kurze Längs- und Querfadenflottungen und somit eine große Anzahl von Stützpunkten für das Papiervlies. Es hat sich gezeigt, daß die kurzen Längs- und Querfadenflottungen die Markierungsfreiheit weiter verbessern.This gives numerous and short longitudinal and transverse thread floats and thus a large number of support points for the paper fleece. It has been shown that the short longitudinal and transverse thread floatings further improve the freedom of marking.

Zweckmäßig bestehen die Längs- und die Querfäden aus Kunststoffmonofilen, insbesondere Polyestermonofil. Die Querfäden der unteren Lage sind zur Verbesserung der Abriebbeständigkeit dabei stärker als die der oberen Lage. Die Abriebbeständigkeit läßt sich weiter verbessern, indem ein Teil der Querfäden der unteren Lage aus besonders abriebbeständigem Material, z.B. Polyamid, besteht.Suitably consist unststoffmonofilen the longitudinal and the transverse threads of K, in particular polyester monofilament. The transverse threads of the lower layer are stronger than those of the upper layer to improve the abrasion resistance. The abrasion resistance can be further improved if some of the transverse threads in the lower layer consist of a particularly abrasion-resistant material, for example polyamide.

Eine Monoplanität der Papierseite wird durch den Webprozeß noch nicht erreicht. Erst durch Thermofixieren der Bespannung unter Längsdehnung wird erreicht, daß die obersten Punkte der Abkröpfungen der Längsfäden und der Querfäden auf der Papierseite in einer Ebene liegen, wie dies allgemein bekannt ist. Die Monoplanität läßt sich bei einer offen gewebten Bespannung im allgemeinen eher erreichen als bei endloser Webart.The web process has not yet achieved a monoplanarity on the paper side. Only by thermofixing the fabric under longitudinal stretching is it achieved that the uppermost points of the offsets of the longitudinal threads and the transverse threads lie in one plane on the paper side, as is generally known. The monoplanarity can be Open weave in general is more likely to reach than with endless weave.

Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung erläutert. Es zeigen:

  • Fig. 1 einen Schnitt in Längsrichtung, wobei der Verlauf von zwei Längsfäden bei einer 7-schäftigen Bindung dargestellt ist.
  • Fig. 2 in Draufsicht die Bespannung nach Fig. 1;
  • Fig. 3 die Bindungspatrone für die Bespannung nach den Figuren 1 und 2;
  • Fig. 4 bis 6 Darstellungen analog denen der Figuren 1 bis 3 jedoch für eine 8-schäftige Bindung;
  • Fig. 7 und 8 im Schnitt in Längsrichtung bzw. in einer Ansicht der Laufseite von unten eine Ausführungsform der Papiermaschinenbespannung, bei der ein Teil der Längsfäden nur in die obere Lage eingebunden ist;
  • Fig. 9 und 10 eine Ausführungsform ähnlich der der Fig. 7 und 8, jedoch mit einer höherschäftigen Bindung;
  • Fig. 11 in Draufsicht eine Papiermaschinenbespannung, deren Gewebehälften spiegelsymmetrische Bindungsmuster haben und
  • Fig. 12 im Längsschnitt eine Papiermaschinenbespannung mit drei Lagen von Querfäden.
Embodiments of the invention are explained below with reference to the drawing. Show it:
  • F ig. 1 shows a section in the longitudinal direction, the course of two longitudinal threads with a 7-strand binding being shown.
  • Fig. 2 in plan view of the covering of Fig. 1;
  • 3 shows the binding cartridge for the covering according to FIGS. 1 and 2;
  • 4 to 6 representations analogous to those of FIGS. 1 to 3 but for an 8-strand binding;
  • FIGS. 7 and 8 in cross-section in the longitudinal direction or in a view of the running side of the bottom an embodiment of the P apiermaschinenbespannung, in which a part of the longitudinal threads is embedded only in the upper layer;
  • F ig. 9 and 10 show an embodiment similar to that of FIGS. 7 and 8, but with a heavy-duty binding;
  • 11 is a plan view of a paper machine clothing, the fabric halves of which have mirror-symmetrical weave patterns, and
  • Fig. 12 in longitudinal section a paper machine clothing with three layers of transverse threads.

Wie im Längsschnitt von Fig. 1 erkennbar, weist die doppellagige Bespannung eine obere Lage 1 von ersten Querfäden 3 und zweiten Querfäden 4, die abwechselnd aufeinander folgen, und eine untere Lage 2 von Querfäden 5 auf. Längsfäden 6 sind mit den Querfäden 3, 4 der oberen Lage 1 und der unteren Lage 2 verwebt und verbinden beide Lagen.As can be seen in the longitudinal section of FIG. 1, the double-layer covering has an upper layer 1 of first transverse threads 3 and second transverse threads 4, which alternate with one another, and a lower layer 2 of transverse threads 5. Longitudinal threads 6 are interwoven with the transverse threads 3, 4 of the upper layer 1 and the lower layer 2 and connect the two layers.

Die Querfadendichte ist in der oberen Lage 1 doppelt so hoch wie in der unteren Lage 2, und die Bespannung wird so gewebt, daß die zweiten Querfäden 4 der oberen Lage 1 möglichst genau über den Querfäden der unteren Lage 2 zu liegen kommen.The transverse thread density in the upper layer 1 is twice as high as in the lower layer 2, and the covering is woven in such a way that the second transverse threads 4 of the upper layer 1 come to lie as precisely as possible over the transverse threads of the lower layer 2.

Innerhalb jedes Bindungsrapports ist jeder Längsfaden 6 zweimal in die obere Lage 1 eingebunden, indem er in Reihenfolge über zwei Querfäden 3, 4 unter einem ersten Querfaden 3 und wieder über zwei Querfäden 4, 3 geschlungen ist. Innerhalb der oberen Lage 1 bildet der Längsfaden 6 daher einen Sattel, durch den ein erster Querfaden 3 abgestützt wird, wobei auf den Querfaden 3 im wesentlichen nur eine nach oben gerichtete Kraft wirkt. Anschließend verläuft der Längsfaden 6 über eine Distanz von vier Querfäden 3, 4 der oberen Lage 1 bzw. zwei Querfäden 5 der unteren Lage 2 zwischen den beiden Lagen l, 2 und ist dann unter einem Querfaden 5 der unteren Lage 2 hindurchgeführt, so daß er auch mit der unteren Lage 2 verwebt ist. Er verläuft dann wieder zwischen den beiden Lagen 1, 2, bis er innerhalb des nächsten Bindungsrapportes wieder zur Oberseite aufsteigt.Within each weave repeat, each longitudinal thread 6 is bound twice into the upper layer 1 by being looped in sequence over two transverse threads 3, 4 under a first transverse thread 3 and again over two transverse threads 4, 3. Within the upper layer 1, the longitudinal thread 6 therefore forms a saddle, by means of which a first transverse thread 3 is supported, with essentially only an upward force acting on the transverse thread 3. Then the longitudinal thread 6 runs over a distance of four transverse threads 3, 4 of the upper layer 1 or two transverse threads 5 of the lower layer 2 between the two layers 1, 2 and is then passed under a transverse thread 5 of the lower layer 2, so that it is also woven with the lower layer 2. It then runs again between the two layers 1, 2 until it rises again to the top within the next binding repeat.

Durch Thermofixieren der Bespannung unter Längsspannung wird erreicht, daß die obersten Punkte der Abkröpfungen 7 der ersten Querfäden 3, der Abkröpfungen 8 der zweiten Querfäden 4 und der Abkröpfungen 9 der Längsfäden 6 in einer Ebene, der Papierebene 10, liegen. Infolge der bei der Thermofixierung der Bespannungen ausgeübten Längsspannung wird ferner der Querfaden 5 der unteren Lage 2, unter dem der Längsfaden 6 hindurchgeschlungen ist, etwas angehoben, so daß der unterste Punkt der Abkröpfung des Längsfadens 6 in der unteren Lage 2 etwas über der von den übrigen Querfäden 5 der unteren Lage 2 gebildeten Laufseite liegt und dadurch dem Abrieb weitgehend entzogen ist. Die Bespannung ist also ein sog. Querfadenläufer (Schußläufer bei offener Webart).By thermofixing the fabric under longitudinal tension, it is achieved that the uppermost points of the crooks 7 of the first transverse threads 3, the crooks 8 of the second transverse threads 4 and the crooks 9 of the longitudinal threads 6 in one level, the paper level 10. As a result of espannungen in the heat-setting of B applied longitudinal tension of the transverse thread is further raised 5 of the bottom layer 2 under which the longitudinal thread is hindurchgeschlungen 6 somewhat, so that the lowermost point of the offset portion of the longitudinal thread 6 in the lower layer 2 is slightly higher than that of the other transverse threads 5 of the lower layer 2 formed running side and is thus largely removed from abrasion. The covering is therefore a so-called cross thread runner (weft runner with open weave).

Gemäß Fig. 2 sind benachbarte Längsfäden 6 in Längsrichtung um jeweils sechs Querfäden 3, 4 der oberen Lage l versetzt. Wie in Fig. 1 erkennbar, kreuzen sich benachbarte Längsfäden 6 daher unterhalb eines zweiten Querfadens 4 der oberen Lage 1. Dies führt zu einer scherenartigen Abstützung dieses zweiten Querfadens 4, durch die der zweite Querfaden 4 nicht nur nach oben gedrückt wird, sondern zugleich in der Gewebeebene etwas aus der Querrichtung herausgedreht wird. Die Abkröpfungen 8 der zweiten Querfäden liegen daher nicht parallel zu den Ab-kröpfungen 7 der ersten Querfäden 3 der oberen Lage 1.2, adjacent longitudinal threads 6 are offset in the longitudinal direction by six transverse threads 3, 4 each of the upper layer 1. As can be seen in FIG. 1, adjacent longitudinal threads 6 therefore intersect below a second transverse thread 4 of the upper layer 1. This leads to a scissor-like support of this second transverse thread 4, by means of which the second transverse thread 4 is not only pressed upwards, but at the same time in the tissue plane is slightly rotated out of the transverse direction. The bent portions 8 of the second transverse threads are not therefore parallel to the A-b cranks 7 of the first transverse threads 3 of the top sheet. 1

Die Gewebebindung der Figuren 1 bis 3 ist eine 7-schäftige Bindung, da sie sich nach sieben Querfäden 5 der unteren Lage 2 und sieben Längsfäden 6 wiederholt. Ein Bindungsrapport umfaßt also sieben Querfäden 5 der unteren Lage 2 und sieben Längsfäden 6 sowie vierzehn Querfäden 3, 4 der oberen Lage 1. Die ersten Querfäden 3 und die zweiten Querfäden 4 können dabei aus dem gleichen Material sein und gleiche Abmessungen aufweisen. Für die zweiten Querfäden 4 wird vorzugsweise ein weicheres Material zweckmäßig in Verbindung mit einem größeren Durchmesser gewählt, damit die Abkröpfungen 8 dieser Querfäden 4 unter einem größeren Winkel zur Querrichtung verlaufen, was für die Markierungsfreiheit vorteilhaft sein kann.The weave of Figures 1 to 3 is a 7-strand weave, since it repeats itself after seven transverse threads 5 of the lower layer 2 and seven longitudinal threads 6. A weave repeat thus comprises seven transverse threads 5 of the lower layer 2 and seven longitudinal threads 6 and fourteen transverse threads 3, 4 of the upper layer 1. The first transverse threads 3 and the second transverse threads 4 can be made of the same material and have the same dimensions. For the second transverse threads 4, a softer material is preferably selected in connection with a larger diameter, so that the offsets 8 of these transverse threads 4 run at a larger angle to the transverse direction, which for the Labeling freedom can be advantageous.

Die Figuren 4 bis 6 zeigen ein Ausführungsbeispiel analog dem der Figuren 1 bis 3, jedoch mit einer 8-schäftigen Bindung. Jeder Längsfaden 6 bildet wiederum zwei Abkröpfungen 9 in der oberen Lage 1, die durch einen dazwischenliegenden ersten Querfaden 3 getrennt sind, der an dieser Stelle eine in Querrichtung verlaufende Abkröpfung 7 aufweist.Figures 4 to 6 show an embodiment analogous to that of Figures 1 to 3, but with an 8-strand binding. Each longitudinal thread 6 in turn forms two offsets 9 in the upper layer 1, which are separated by an intermediate first transverse thread 3, which has an offset 7 extending in the transverse direction at this point.

Die Abkröpfungen 8 der zweiten Querfäden 4 verlaufen wiederum unter einem Winkel zur Querrichtung, da die zweiten Querfäden 4 scherenartig durch benachbarte Längsfäden 6 abgestützt werden, die um sechs Querfäden gegeneinander versetzt sind.The offsets 8 of the second transverse threads 4 again run at an angle to the transverse direction, since the second transverse threads 4 are supported in a scissor-like manner by adjacent longitudinal threads 6, which are offset from one another by six transverse threads.

Wie man aus einem Vergleich der Figuren 2 und 5 ersieht, sind die Abkröpfungen 9 der Längsfäden 6 sehr gleichmäßig verteilt. Durch die schräg zueinander verlaufenden Abkröpfungen 7 und 8 entsteht jedoch keine Monotonie und entstehen insbesondere keine in Diagonalrichtung verlaufenden Gassen, die sich im Papier als Markierung bemerkbar machen.As can be seen from a comparison of Figures 2 and 5, the bends 9 of the longitudinal threads 6 are distributed very evenly. However, due to the obliquely offset crankings 7 and 8, there is no monotony and, in particular, there are no alleys running in the diagonal direction, which are noticeable as markings in the paper.

Es besteht auch die Möglichkeit, die beiden Abkröpfungen 9 jedes Längsfadens 6 nicht durch einen Querfaden 3, sondern durch insgesamt drei oder fünf Querfäden der oberen Lage 1 voneinander zu trennen. Bei einer Trennung durch drei Querfäden werden in jedem Querfaden der oberen Lage 1 die zwei verschiedene Arten von Abkröpfungen gebildet, die schräg zueinander verlaufen. Bei einer Trennung der Abkröpfungen 9 durch fünf Querfäden der oberen Lage 1 flottieren die Querfäden über vier Längsfäden und besteht nur noch eine einzige Art von Abkröpfungen, so daß sich bezüglich der Markierungsfreiheit keine Verbesserung mehr ergibt.It is also possible to separate the two offsets 9 of each longitudinal thread 6 from one another not by a transverse thread 3, but by a total of three or five transverse threads of the upper layer 1. When separated by three transverse threads, the two different types of offsets are formed in each transverse thread of the upper layer 1 and run obliquely to one another. If the offsets 9 are separated by five transverse threads of the upper layer 1, the transverse threads float over four longitudinal threads and there is only a single type of offset, so that there is no longer any improvement with regard to the freedom of marking.

Die Figuren 3 und 6 zeigen die Webpatronen zu den Ausführungsbeispielen der Figuren 1 und 2 bzw. 4 und 5. Die Zahlen 1 bis 7 von Fig. 3 bzw. 1 bis 8 von Fig. 6 am unteren Rand beziehen sich auf die Längsfäden, und die am seitlichen Rand angegebenen Zahlen 1 bis 21 bzw. 1 bis 24 beziehen sich auf die Querfäden eines Rapports.Figures 3 and 6 show the weave cartridges for the embodiments of Figures 1 and 2 or 4 and 5. The numbers 1 to 7 of Fig. 3 and 1 to 8 of Fig. 6 at the bottom refer to the longitudinal threads, and the numbers 1 to 21 and 1 to 24 on the side edge refer to the cross threads of a repeat.

In Fig. 3 beziehen sich die Querfäden mit den Nummern 1, 4, 7, 10 usw. auf die durch einen Abkröpfungssattel eines Längsfadens abgestützten ersten Querfäden 3, während die Querfäden mit den Nummern 2, 5, 8 usw. die durch scherenförmig geführte Kettfäden abgestützten zweiten Querfäden 4 betreffen. Die Querfäden mit den Nummern 3, 6, 9 usw. beziehen sich auf Querfäden 5 der unteren Lage 2. In Fig. 6 gehören die Querfäden mit den Nummern 2, 5, 8, 11 usw. zur unteren Lage, während die durch Abkröpfungssattel abgestützten, ersten Querfäden 3 mit den Nummern 1, 4, 7 usw. bezeichnet sind und die scherenförmig abgestützten, zweiten Querfäden 4 mit den Nummern 3, 6, 9 usw. betreffen.Strength in F. 3, the transverse threads with the numbers 1, 4, 7, 10, etc. relate to the first transverse threads 3 supported by an offset saddle of a longitudinal thread, while the transverse threads with the numbers 2, 5, 8, etc. refer to the second transverse threads supported by scissor-shaped warp threads 4 concern. The cross threads with the numbers 3, 6, 9, etc. relate to transverse threads 5 of the bottom layer 2. In F ig. 6, the transverse threads with the numbers 2, 5, 8, 11, etc. belong to the lower layer, while the first transverse threads 3, supported by angled saddle, are designated with the numbers 1, 4, 7, etc., and the scissors-shaped, second transverse threads 4 with numbers 3, 6, 9, etc.

Jedes einzelne Quadrat der Webpatrone stellt einen Kreu- zungspunkt zwischen einem Längs- und einem Querfaden dar. Schwarzausgefüllte Quadrate geben dabei an, daß der Längsfaden über dem Querfaden liegt, während weiße Quadrate angeben, daß die Querfäden der oberen Lage 1 über den Längsfäden 6 verlaufen. Die Quadrate mit einem schwarzen Punkt geben an, daß die Querfäden der unteren Lage 2 von der Papierseite her betrachtet über den Längsfäden 6 liegen. Dies sind die Abbindestellen der unteren Lage 2 mit den Längsfäden 6.Each individual square of the Webpatrone provides a K Reuter wetting point between a longitudinal and a transverse thread is. Black Filled squares thereby indicate that the longitudinal thread overlies the transverse thread, while white squares indicate that the transverse threads of the upper layer 1 via the longitudinal threads 6 run. The squares with a black dot indicate that the transverse threads of the lower layer 2, viewed from the paper side, lie over the longitudinal threads 6. These are the binding points of the lower layer 2 with the longitudinal threads 6.

Die erfindungsgemäße Bespannung wird im allgemeinen so gewebt und thermofixiert, daß sich eine Längsfadendichte zwischen 90 und 110 % ergibt. Ein typischer Wert für die Längsfadendichte liegt zwischen 100 und 105 %. Für Tissue-Papiere werden jedoch zweckmäßig niedrigere Werte gewählt.The covering according to the invention is generally woven and heat-set in such a way that a longitudinal thread density of between 90 and 110% results. A typical value for the longitudinal thread density is between 100 and 105%. However, lower values are appropriately chosen for tissue papers.

Die hier beschriebene Papiermaschinenbespannung kann entsprechend EP-A-0 048 962 auch so ausgeführt werden, daß lediglich ein Teil der Längsfäden 6 in die untere Lage 2 der Querfäden 5 eingebunden wird, während die übrigen Längsfäden 16 nur mit den Schußdrähten 3, 4 der oberen Lage 1 verwoben sind, so daß sie nicht dem Abrieb auf der Laufseite ausgesetzt sind. Derartige Ausführungsformen der erfindungsgemäßen Papiermaschinenbespannung sind in Fig. 7 und 9 im Schnitt darstellt. Die in Fig. 7 dargestellte Ausführungsform stimmt dabei weitgehend mit der nach Fig. 1 überein, und der einzige Unterschied besteht darin, daß jeder zweite Längsfaden 16 nicht in die untere Lage 2 eingewoben ist. Es kann auch ein anderes Verhältnis der Längsfäden 6 zu den Längsfäden 16 gewählt werden. Die Längsfäden 6 werden innerhalb jedes Bindungsrapportes zweimal in die obere Lage 1 und einmal in die untere Lage 2 eingebunden. Die Längsfäden 16 werden innerhalb jedes Bindungsrapportes zweimal in die obere Lage 1 eingebunden, jedoch niemals in die untere Lage 2. Dadurch ergeben sich auf der Laufseite sehr lange Querfadenflottungen, nämlich solche über 13 Längsfäden, wie es in Fig. 8 dargestellt ist. Auf der Papierseite ergibt sich kein Unterschied gegenüber der Ausführungsform der Fig. 1 und 2.The papermaker's fabric as described herein can EP-A-0 are 048,962 also carried out accordingly, that only part of the longitudinal threads is included in the lower layer 2 of the transverse threads 5 6, while the remaining L ängsfäden 16 only with the weft wires 3, 4 of upper layer 1 are woven so that they are not exposed to abrasion on the running side. Such embodiments of the paper machine clothing according to the invention are shown in section in FIGS. 7 and 9. The embodiment shown in FIG. 7 largely corresponds to that of FIG. 1, and the only difference is that every second longitudinal thread 16 is not woven into the lower layer 2. Another ratio of the longitudinal threads 6 to the longitudinal threads 16 can also be selected. The longitudinal threads 6 are bound twice in the upper layer 1 and once in the lower layer 2 within each weave repeat. The longitudinal threads 16 are bound twice in the upper layer 1 within each weave repeat, but never in the lower layer 2. This results in very long transverse thread floats on the running side, namely those with 13 longitudinal threads, as shown in FIG. 8. There is no difference on the paper side compared to the embodiment of FIGS. 1 and 2.

Die Fig. 9 und 10 zeigen eine Ausführungsform der Papiermaschinenbespannung, bei der die einen Kettfäden 6 innerhalb jedes Bindungsrapportes zweimal in die obere Lage 1 und zweimal in die untere Lage 2 eingebunden sind. Die anderen Längsfäden 16 sind innerhalb jedes Bindungsrapportes zweimal in die obere Lage l, jedoch niemals in die untere Lage 2 eingebunden. Es ergeben sich dabei auf der Laufseite kürzere Querfadenflottungen, nämlich solche über 7 Längsfäden, wie es in Fig. 10 dargestellt ist. Die Papierseite dieser Ausführungsform entspricht der der Fig. 4 und 5, da sich bezüglich der Einbindung in die obere Lage 1 keine Unterschiede ergeben.FIGS. 9 and 10 show an embodiment of the paper machine clothing in which the one warp threads 6 are bound twice in the upper layer 1 and twice in the lower layer 2 within each weave repeat. The other longitudinal threads 16 are bound twice in the upper layer 1 within each weave repeat, but never in the lower layer 2. This results in shorter transverse thread floats on the running side, namely those with 7 longitudinal threads, as shown in FIG. 10. The paper side of this embodiment corresponds to that of FIGS. 4 and 5, since there are no differences with regard to the integration in the upper layer 1.

Die erfindungsgemäße Papiermaschinenbespannung kann entsprechend EP-A-0 120 337 so ausgestaltet werden, daß das Bindungsmuster in den beiden durch die in Längsrichtung verlaufende Mittellinie getrennten Gewebehälften spiegelsymmetrisch ist und die Bindungspunkte ein V-Muster im Gewebe mit in der Gewebemitte brechender Bindungsdiagonale bilden. Dadurch wird das seitliche Verlaufen oder Abdrif- ten der laufenden Papiermaschinenbespannung in der Papiermaschine verhindert. Durch zusätzliche Längsfäden 26 in der Gewebemitte werden übermäßig lange Flottungen der Querfäden verhindert, so daß auch an der Grenzlinie der beiden Gewebehälften keine wesentlich längeren Flottungen der Querfäden auftreten als im übrigen Gewebe. Fig. 11 zeigt in Draufsicht einen Ausschnitt aus einer derartigen Papiermaschinenbespannung einschließlich einiger zusätzlicher Längsfäden 26.The paper machine clothing according to the invention can be designed in accordance with EP-A-0 120 337 so that the weave pattern in the two halves of the fabric separated by the longitudinal center line is mirror-symmetrical and the weave points form a V-pattern in the weave with a weave diagonal breaking in the middle of the weave. Thus, the lateral running or A bdrif- th the running paper machine clothing in the paper machine is prevented. Excessively long floats of the transverse threads are prevented by additional longitudinal threads 26 in the middle of the fabric, so that no substantially longer floats of the transverse threads occur at the boundary line of the two fabric halves than in the remaining fabric. 11 shows a plan view of a section of such a paper machine clothing including some additional longitudinal threads 26.

Fig. 12 zeigt im Längsschnitt eine Ausführungsform, bei der drei Lagen von Querfäden vorgesehen sind. Die obere Lage 21 und die mittlere Lage 22 der Querfäden sind dabei mit den Längsfäden 6 so verwoben, wie es in Fig. 1 für die obere Lage 1 und die untere Lage 2 dargestellt ist. F ig. 12 shows in longitudinal section an embodiment in which three layers of transverse threads are provided. The upper layer 21 and the middle layer 22 of the transverse threads are interwoven with the longitudinal threads 6 as shown in FIG. 1 for the upper layer 1 and the lower layer 2.

Die untere Lage 23 der Querfäden von Fig. 12 ist eine zusätzliche Lage von Querfäden 25, die mittels zusätzlicher Längsfäden 27 mit der mittleren Lage 22 der Querfäden 5 verwoben ist. Insgesamt ist daher jeder Längsfaden nur mit den Querfäden zweier aufeinanderfolgender Lagen verwebt. Zweckmäßig entsprechen dabei die Querfäden 25 der unteren Lage 23 in der Dichte ihrer Anordnung den Querfäden 5 der mittleren Lage 22. Ein derartiges Verbund-Gewebe ist im einzelnen in DE-A-32 25 599 beschrieben und dargestellt. Die Papierseite dieser Ausführungsform ist so wie in Fig. 2 dargestellt.The backsheet 23 of the transverse threads of FIG. 12 is an additional layer of transverse threads 25, which is woven with 27 of the middle layer 22 of the transverse threads 5 ängsfäden means of additional L. Overall, therefore, each longitudinal thread is only woven with the transverse threads of two successive layers. The transverse threads 25 of the lower layer 23 expediently correspond in their arrangement to the transverse threads 5 of the middle layer 22. Such a composite fabric is described and illustrated in detail in DE-A-32 25 599. The paper side of this embodiment is as shown in FIG. 2.

Beispiel 1:Example 1:

Es wird eine Bespannung mit einer 7-schäftigen Bindung gemäß den Figuren 1 bis 3 in offener Webart hergestellt. Die Längsfäden bestehen aus Polyester-Monofil mit hohem Elastizitätsmodul und einem Durchmesser von 0,15 mm. Nach dem Thermofixieren beträgt die Längsfadendichte 71 Drähte/cm.A covering with a 7-shaft binding according to FIGS. 1 to 3 is produced in an open weave. The longitudinal threads consist of polyester monofilament with a high modulus of elasticity and a diameter of 0.15 mm. After heat setting, the longitudinal thread density is 71 wires / cm.

Die ersten Querfäden 3 der oberen Lage 1 sind Polyester- Monofile von 0,17 mm Durchmesser und haben einen mittleren Elastizitätsmodul (Dehnung 19 % bei einer Belastung von 27 cN/tex). Die zweiten Querfäden 4 sind Polyester-Monofile von 0,185 mm Durchmesser und haben einen relativ geringen Elastizitätsmodul (Dehnung 23,4 % bei einer Belastung von 27 cN/tex). Nach dem Thermofixieren beträgt die Querfadendichte in der oberen Lage 1 insgesamt 36/cm. Die Querfäden 5 der unteren Lage 2, die die Laufseite bilden, sind abwechselnd besonders weiche Polyester-Monofile (Dehnung 23,4 % bei einer Belastung von 27'cN/tex) von 0,20 mm und weiche Polyamid-6-Monofile von 0,21 mm Durchmesser, und nach dem Thermofixieren beträgt die Querfadendichte in der unteren Lage 2 insgesamt 18/cm.The first transverse threads 3 of the top sheet 1 are polyester onofile M of 0.17 mm in diameter and have an average modulus of elasticity (elongation 19% at a load of 27 cN / tex). The second transverse threads 4 are polyester monofilaments with a diameter of 0.185 mm and have a relatively low modulus of elasticity (elongation 23.4% at a load of 27 cN / tex). After heat setting, the cross thread density in the top layer 1 is a total of 36 / cm. The transverse threads 5 of the lower layer 2, which form the running side, are alternately particularly soft polyester monofilaments (elongation 23.4% with a load of 27 ' cN / tex) of 0.20 mm and soft polyamide 6 monofilaments of 0 , 21 mm in diameter, and after heat setting, the cross thread density in the lower layer 2 is a total of 18 / cm.

Das Gewebe wird so thermofixiert, daß auf der Papierseite die Abkröpfungen 7 und 8 der ersten Querfäden 3 und der zweiten Querfäden 4 und die Abkröpfungen 9 der Längsfäden 6 in einer Ebene liegen, so daß das Gewebe monoplan ist.The fabric is heat-set in such a way that the bends 7 and 8 of the first transverse threads 3 and the second transverse threads 4 and the bends 9 of the longitudinal threads 6 lie in one plane on the paper side, so that the fabric is monoplan.

Auf der Laufseite ergab sich dabei ein Monoplanitätsunterschied zwischen den Querfäden 5 und den Längsfäden 6 von 7,5/100 mm, so daß die Bespannung ein Schußläufer ist. Beim Weben und Fixieren wurde darauf geachtet, daß die ersten Querfäden 3 der oberen Lage 1 genau über den Querfäden 5 der unteren Lage 2 liegen.On the running side there was a monoplanarity difference between the transverse threads 5 and the longitudinal threads 6 of 7.5 / 100 mm, so that the covering is a weft runner. When weaving and fixing, care was taken to ensure that the first transverse threads 3 of the upper layer 1 lie exactly above the transverse threads 5 of the lower layer 2.

Beispiel 2:Example 2:

Es wird eine Bespannung mit einer 8-schäftigen Bindung gemäß den Figuren 4 bis 6 in offener Webart hergestellt und nach dem Fixieren mit einer Webnaht endlosgemacht. Das Gewebe wird mit einer Längsfadenzahl von 54/cm gewebt. Beim Thermofixieren erhöht sich die Längsfadenzahl infolge der Querkontraktion des Gewebes auf 60/cm. Die Längsfäden bestehen aus Polyester-Monofil von 0,17 mm Durchmesser und einer längsstabilen Qualität mit hohem Elastizitätsmodul.A covering with an 8-strand binding according to FIGS. 4 to 6 is produced in an open weave and, after being fixed, is made endless with a woven seam. The fabric is woven with a longitudinal thread count of 54 / cm. During heat setting, the number of longitudinal threads increases to 60 / cm due to the transverse contraction of the fabric. The longitudinal threads consist of polyester monofilament with a diameter of 0.17 mm and a longitudinally stable quality with a high modulus of elasticity.

Die Querfäden 3 der oberen Lage bestehen aus Polyester- Monofil von 0,17 mm Durchmesser einer relativ harten Schußqualität (Type Trevira 902 mit einem für Schußdrähte relativ hohen Elastizitätsmodul entsprechend einer Dehnung von 8,5 % bei einer Belastung von 27 cN/tex). Die zweiten Schußfäden 4 der oberen Lage 1 sind ebenfalls Polyester- Monofile, jedoch von der weicheren Type Trevira 900 entsprechend einer Dehnung von 23,4 % bei 27 cN/tex und einem Durchmesser von 0,20 mm. Dieses Gewebe wird mit einer Querfadendichte von insgesamt 35/cm gewoben, wobei sich durch das Thermofixieren die Querfadenzahl auf 32/cm in der oberen Lage 1 und auf 16/cm in der unteren Lage 2 erniedrigt. Die Querfäden 5 der unteren Lage 2 sind abwechselnd Polyester-Monofile mit 0,22 mm Durchmesser der weichen Type Trevira 900 entsprechend einer Dehnung von 23,5 % bei 27 cN/tex und Polyamid-Monofile der Type PA 6.6 mit einem Durchmesser von 0,24 mm. Das Gewebe wird bei 195*C fixiert, wobei eine maximale Längsspannung von 95 N/cm erreicht wird. Während des Fixiervorganges erfolgt eine Umkröpfung der Längs- und Querfäden: Die ursprünglich an der Außenseite des gewobenen Siebtuches liegenden Längsfäden (Kette) strecken sich unter dem Einfluß der Fixierspannung und Wärme und werden infolge dieser Umkröpfung im Inneren des Gewebes eingebettet. Bei der fertigen Bespannung liegen die Längsfadenflottungen sowie die zur Papierseite gerichteten Flottungen der ersten Querfäden 3 und der zweiten Querfäden 4 alle in einer Ebene. Auf der Laufseite zwingt der Längsfaden 6 die Querfäden 5 zum starken Abkröpfen, so daß in der fertigen Bespannung alleine die Flottungen der Querfäden 5 die Außenseite, d.h. die Laufseite, des Gewebes in der unteren Lage 2 bilden. Auf der Laufseite werden dabei Höhenunterschiede zwischen den Querfäden und den Längsfäden von 8,5/100 mm Höhenunterschied gemessen, d.h., erst nach einem Durchschliff des Querfadenmaterials von 8,5/100 mm kommen die Längsfäden 6 erstmals in Berührung mit den Elementen der Siebpartie der Papiermaschine.The transverse threads 3 of the upper layer consist of polyester monofilament of 0.17 mm diameter with a relatively hard weft quality (type Trevira 902 with a relatively high modulus of elasticity for weft wires corresponding to an elongation of 8.5% under a load of 27 cN / tex). The second weft threads 4 of the top sheet 1 are also polyester M onofile, however, 900 mm from the softer Type Trevira corresponding to an elongation of 23.4% at 27 cN / tex and a diameter of 0.20. This fabric is woven with a transverse thread density of 35 / cm, wherein the T by the number of transverse threads hermofixieren at 32 / cm in the upper layer 1 and at 16 / cm decreased in the lower tier. 2 The transverse threads 5 of the lower layer 2 are alternately polyester monofilaments with a diameter of 0.22 mm of the soft type Trevira 900 corresponding to an elongation of 23.5% at 27 cN / tex and polyamide monofilaments of the type PA 6.6 with a diameter of 0, 24 mm. The fabric is fixed at 195 * C, whereby a maximum longitudinal tension of 95 N / cm is reached. During the fixing operation is performed a U mkröpfung the longitudinal and transverse yarns: The longitudinal threads (warp) originally located on the outer side of the woven screen cloth stretch under the influence of Fixierspannung and heat, and are embedded as a result of this Umkröpfung inside the tissue. At of the finished covering, the longitudinal thread floats and the floats of the first transverse threads 3 and the second transverse threads 4 directed towards the paper side are all in one plane. On the running side, the longitudinal thread 6 forces the transverse threads 5 to bend strongly, so that in the finished covering alone, the floats of the transverse threads 5 form the outside, ie the running side, of the fabric in the lower layer 2. On the running side, height differences between the transverse threads and the longitudinal threads of 8.5 / 100 mm height difference are measured, ie, only after grinding through the transverse thread material of 8.5 / 100 mm do the longitudinal threads 6 come into contact with the elements of the wire section for the first time Paper machine.

Claims (2)

1. Bespannung für den Blattbildungsteil einer Papiermaschine mit einer oberen und einer unteren Lage (1, 2) von Querfäden (3, 4, 5), die mit Längsfäden (6) verwebt sind, wobei die Querfadenzahl in der oberen Lage (1) doppelt so hoch ist wie die in der unteren Lage (2), innerhalb eines Bindungsrapports jeder Längsfaden (6) zweimal in die obere Lage (1) der Querfäden (3, 4) eingewebt ist und die Querfäden (3, 4) der oberen Lage (1) und die Längsfäden (6) Abkröpfungen (7, 8, 9) bilden, die in einer Ebene, der Papierebene (10), liegen, dadurch gekennzeichnet, daß erste Querfäden (3) der oberen Lage (1) die Papierebene (10) tangierende Abkröpfungen (7) aufweisen, die in einem Abkröpfungssattel eines Längsfadens (6) abgestützt sind, und daß alternierend zu den ersten Querfäden (3) angeordnete zweite Querfäden (4) der oberen Lage (1) die Papierebene (10) tangierende Abkröpfungen (8) aufweisen, die von zwei benachbarten Längsfäden (6) abgestützt werden, von denen einer aus dem Gewebeinneren zur Papierebene (10) aufsteigt, während der andere von der Papierebene (10) ins Gewebeinnere absteigt.1. covering for the sheet forming part of a paper machine with an upper and a lower layer (1, 2) of transverse threads (3, 4, 5), which are interwoven with longitudinal threads (6), the number of transverse threads in the upper layer (1) twice is as high as that in the lower layer (2), within a weave repeat each longitudinal thread (6) is woven twice into the upper layer (1) of the transverse threads (3, 4) and the transverse threads (3, 4) of the upper layer ( 1) and the longitudinal threads (6) form offsets (7, 8, 9) which lie in one plane, the paper plane (10), characterized in that first transverse threads (3) of the upper layer (1) form the paper plane (10 ) have tangent bends (7) which are supported in a bend saddle of a longitudinal thread (6), and that alternate to the first transverse threads (3) arranged second transverse threads (4) of the upper layer (1) which affect the paper plane (10) 8), which are supported by two adjacent longitudinal threads (6), one of which is from the inside of the fabric r paper plane (10) rises while the other descends from the paper plane (10) into the interior of the fabric. 2. Bespannung nach Anspruch 1, dadurch geken- zeichnet, daß die Längsfäden (6) unmittelbar vor und nach jedem Abkröpfungssattel über zwei Querfäden (3, 4) der oberen Lage (1) geführt sind und daß benachbarte Längsfäden (6) um sechs Querfäden (3, 4) der oberen Lage (1) in Längsrichtung gegeneinander versetzt sind.2. covering according to claim 1, characterized in that the longitudinal threads (6) immediately before and after each cranking saddle are guided over two transverse threads (3, 4) of the upper layer (1) and that adjacent longitudinal threads (6) around six transverse threads (3, 4) of the upper layer (1) are mutually offset in the longitudinal direction.
EP19860117588 1986-05-06 1986-12-17 Screen cloth for the wet end of a paper-making machine Expired - Lifetime EP0224276B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86117588T ATE51427T1 (en) 1986-05-06 1986-12-17 CLOTHING FOR THE SHEET FORMING PART OF A PAPER MACHINE.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3615304 1986-05-06
DE19863615304 DE3615304A1 (en) 1986-05-06 1986-05-06 COVER FOR THE SHEET FORMING PART OF A PAPER MACHINE
US06/905,424 US4739803A (en) 1986-05-06 1986-09-10 Fabric for the sheet forming section of a papermaking machine
US905424 1992-06-29

Publications (3)

Publication Number Publication Date
EP0224276A2 true EP0224276A2 (en) 1987-06-03
EP0224276A3 EP0224276A3 (en) 1987-08-26
EP0224276B1 EP0224276B1 (en) 1990-03-28

Family

ID=25843524

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860117588 Expired - Lifetime EP0224276B1 (en) 1986-05-06 1986-12-17 Screen cloth for the wet end of a paper-making machine

Country Status (8)

Country Link
EP (1) EP0224276B1 (en)
JP (1) JPH07122228B2 (en)
AR (1) AR247260A1 (en)
AU (1) AU7132587A (en)
CA (1) CA1281615C (en)
FI (1) FI87666C (en)
GR (1) GR3000442T3 (en)
NO (1) NO871864L (en)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3801051A1 (en) * 1988-01-15 1989-07-27 Wangner Gmbh Co Kg Hermann DOUBLE-DAY LOADING FOR THE SHEETING AREA OF A PAPER MACHINE
EP0390005A2 (en) * 1989-03-28 1990-10-03 Andreas Kufferath GmbH & Co. KG Multi-layer screen-cloth for paper machine
WO1991014813A1 (en) * 1990-03-29 1991-10-03 Asten Group, Inc. Two-ply papermakers forming fabric
WO1992008000A1 (en) * 1990-10-25 1992-05-14 Hutter & Schrantz Ag. Textile for use as a paper machine
EP0698682A1 (en) * 1994-08-23 1996-02-28 Albany International Corp. Triple layer papermaking fabric providing improved fiber support
EP0702108A1 (en) * 1994-09-16 1996-03-20 Huyck Licensco, Inc. Papermaker's forming fabric
US5709250A (en) * 1994-09-16 1998-01-20 Weavexx Corporation Papermakers' forming fabric having additional fiber support yarns
US5881764A (en) * 1997-08-01 1999-03-16 Weavexx Corporation Multi-layer forming fabric with stitching yarn pairs integrated into papermaking surface
EP0905310A2 (en) * 1997-09-19 1999-03-31 Nippon Filcon Co., Ltd. Industrial fabric
US5937914A (en) * 1997-02-20 1999-08-17 Weavexx Corporation Papermaker's fabric with auxiliary yarns
US5967195A (en) * 1997-08-01 1999-10-19 Weavexx Corporation Multi-layer forming fabric with stitching yarn pairs integrated into papermaking surface
US5983953A (en) * 1994-09-16 1999-11-16 Weavexx Corporation Paper forming progess
WO1999061698A1 (en) * 1998-05-23 1999-12-02 Jwi Ltd. Warp-tied composite forming fabric
US6112774A (en) * 1998-06-02 2000-09-05 Weavexx Corporation Double layer papermaker's forming fabric with reduced twinning.
US6123116A (en) * 1999-10-21 2000-09-26 Weavexx Corporation Low caliper mechanically stable multi-layer papermaker's fabrics with paired machine side cross machine direction yarns
US6179013B1 (en) 1999-10-21 2001-01-30 Weavexx Corporation Low caliper multi-layer forming fabrics with machine side cross machine direction yarns having a flattened cross section
US6223780B1 (en) 1998-11-18 2001-05-01 Thomas Josef Heimbach Gesellschaft Mit Beschrankter Haftung & Co. Textile planar structure having machine and cross-machine direction binding yarns
US6244306B1 (en) 2000-05-26 2001-06-12 Weavexx Corporation Papermaker's forming fabric
US6253796B1 (en) 2000-07-28 2001-07-03 Weavexx Corporation Papermaker's forming fabric
US6585006B1 (en) 2000-02-10 2003-07-01 Weavexx Corporation Papermaker's forming fabric with companion yarns
US6745797B2 (en) 2001-06-21 2004-06-08 Weavexx Corporation Papermaker's forming fabric
US6837277B2 (en) 2003-01-30 2005-01-04 Weavexx Corporation Papermaker's forming fabric

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI89819C (en) * 1992-02-24 1993-11-25 Tamfelt Oy Ab Wiper for paper machine
JP3883275B2 (en) * 1997-11-28 2007-02-21 日本フイルコン株式会社 Industrial two-layer fabric with auxiliary weft arranged on the upper layer fabric
US6227256B1 (en) * 1999-12-13 2001-05-08 Albany International Corp. Multi-layer papermaking fabric having long weft floats on its support and machine surfaces
JP3925915B2 (en) * 2002-05-24 2007-06-06 日本フイルコン株式会社 Industrial two-layer fabric
US7059360B1 (en) * 2005-03-03 2006-06-13 Albany International Corp. Double layer forming fabric with paired warp binder yarns
US20090183795A1 (en) 2008-01-23 2009-07-23 Kevin John Ward Multi-Layer Papermaker's Forming Fabric With Long Machine Side MD Floats
US7766053B2 (en) 2008-10-31 2010-08-03 Weavexx Corporation Multi-layer papermaker's forming fabric with alternating paired and single top CMD yarns
US8251103B2 (en) 2009-11-04 2012-08-28 Weavexx Corporation Papermaker's forming fabric with engineered drainage channels

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2198012A1 (en) * 1972-09-01 1974-03-29 Nordiska Maskinfilt Ab
EP0010311A1 (en) * 1978-10-23 1980-04-30 JWI Ltd. Paper forming fabric
EP0093096A2 (en) * 1982-04-26 1983-11-02 Nordiskafilt Ab A forming fabric
DE3224236A1 (en) * 1982-06-29 1984-03-08 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Composite fabric as a covering for the sheet-forming region of a paper machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6037235A (en) * 1983-08-09 1985-02-26 Mitsubishi Heavy Ind Ltd Extrusion working method of hollow parts

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2198012A1 (en) * 1972-09-01 1974-03-29 Nordiska Maskinfilt Ab
EP0010311A1 (en) * 1978-10-23 1980-04-30 JWI Ltd. Paper forming fabric
EP0093096A2 (en) * 1982-04-26 1983-11-02 Nordiskafilt Ab A forming fabric
DE3224236A1 (en) * 1982-06-29 1984-03-08 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Composite fabric as a covering for the sheet-forming region of a paper machine

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3801051A1 (en) * 1988-01-15 1989-07-27 Wangner Gmbh Co Kg Hermann DOUBLE-DAY LOADING FOR THE SHEETING AREA OF A PAPER MACHINE
EP0390005A2 (en) * 1989-03-28 1990-10-03 Andreas Kufferath GmbH & Co. KG Multi-layer screen-cloth for paper machine
EP0390005A3 (en) * 1989-03-28 1991-09-11 Andreas Kufferath GmbH & Co. KG Multi-layer screen-cloth for paper machine
WO1991014813A1 (en) * 1990-03-29 1991-10-03 Asten Group, Inc. Two-ply papermakers forming fabric
AU642012B2 (en) * 1990-03-29 1993-10-07 Astenjohnson, Inc. Two-ply papermakers forming fabric
WO1992008000A1 (en) * 1990-10-25 1992-05-14 Hutter & Schrantz Ag. Textile for use as a paper machine
AU700918B2 (en) * 1994-08-23 1999-01-14 Albany International Corp. Triple layer papermaking fabric providing improved fibre support
EP0698682A1 (en) * 1994-08-23 1996-02-28 Albany International Corp. Triple layer papermaking fabric providing improved fiber support
US5983953A (en) * 1994-09-16 1999-11-16 Weavexx Corporation Paper forming progess
US5709250A (en) * 1994-09-16 1998-01-20 Weavexx Corporation Papermakers' forming fabric having additional fiber support yarns
EP0702108A1 (en) * 1994-09-16 1996-03-20 Huyck Licensco, Inc. Papermaker's forming fabric
US6073661A (en) * 1994-09-16 2000-06-13 Weavexx Corporation Process for forming paper using a papermaker's forming fabric
US5937914A (en) * 1997-02-20 1999-08-17 Weavexx Corporation Papermaker's fabric with auxiliary yarns
US5881764A (en) * 1997-08-01 1999-03-16 Weavexx Corporation Multi-layer forming fabric with stitching yarn pairs integrated into papermaking surface
US5967195A (en) * 1997-08-01 1999-10-19 Weavexx Corporation Multi-layer forming fabric with stitching yarn pairs integrated into papermaking surface
USRE40066E1 (en) * 1997-08-01 2008-02-19 Weavexx Corporation Multi-layer forming fabric with stitching yarn pairs integrated into papermaking surface
US6145550A (en) * 1997-08-01 2000-11-14 Weavexx Corporation Multilayer forming fabric with stitching yarn pairs integrated into papermaking surface
EP0905310A2 (en) * 1997-09-19 1999-03-31 Nippon Filcon Co., Ltd. Industrial fabric
EP0905310A3 (en) * 1997-09-19 2000-04-05 Nippon Filcon Co., Ltd. Industrial fabric
WO1999061698A1 (en) * 1998-05-23 1999-12-02 Jwi Ltd. Warp-tied composite forming fabric
US6112774A (en) * 1998-06-02 2000-09-05 Weavexx Corporation Double layer papermaker's forming fabric with reduced twinning.
US6223780B1 (en) 1998-11-18 2001-05-01 Thomas Josef Heimbach Gesellschaft Mit Beschrankter Haftung & Co. Textile planar structure having machine and cross-machine direction binding yarns
US6123116A (en) * 1999-10-21 2000-09-26 Weavexx Corporation Low caliper mechanically stable multi-layer papermaker's fabrics with paired machine side cross machine direction yarns
US6179013B1 (en) 1999-10-21 2001-01-30 Weavexx Corporation Low caliper multi-layer forming fabrics with machine side cross machine direction yarns having a flattened cross section
US6585006B1 (en) 2000-02-10 2003-07-01 Weavexx Corporation Papermaker's forming fabric with companion yarns
US6244306B1 (en) 2000-05-26 2001-06-12 Weavexx Corporation Papermaker's forming fabric
US6253796B1 (en) 2000-07-28 2001-07-03 Weavexx Corporation Papermaker's forming fabric
US6745797B2 (en) 2001-06-21 2004-06-08 Weavexx Corporation Papermaker's forming fabric
US6837277B2 (en) 2003-01-30 2005-01-04 Weavexx Corporation Papermaker's forming fabric

Also Published As

Publication number Publication date
FI871230A (en) 1987-11-07
JPH07122228B2 (en) 1995-12-25
AU7132587A (en) 1987-11-12
AR247260A1 (en) 1994-11-30
CA1281615C (en) 1991-03-19
NO871864D0 (en) 1987-05-05
FI87666C (en) 1994-10-10
JPS62268893A (en) 1987-11-21
EP0224276B1 (en) 1990-03-28
NO871864L (en) 1987-11-09
FI87666B (en) 1992-10-30
FI871230A0 (en) 1987-03-20
GR3000442T3 (en) 1991-06-28
EP0224276A3 (en) 1987-08-26

Similar Documents

Publication Publication Date Title
EP0224276B1 (en) Screen cloth for the wet end of a paper-making machine
EP0048962B2 (en) Two-layered sieve for the sheet forming zone of a paper machine
DE3615304A1 (en) COVER FOR THE SHEET FORMING PART OF A PAPER MACHINE
DE3146385C2 (en) Double-layer fabric as a covering for paper machines
EP0164434B1 (en) Papermachine cloth
EP0097966B1 (en) Compound tissue for paper machines
EP0114656B1 (en) Compound fabric as a machine clothing for the sheet forming part of a paper machine
EP0264001B1 (en) Double layer fabric for a paper making machine having a coarse wear side structure and a fine sheet surface structure
EP0432413B1 (en) Compound tissue for paper-making machine fabrics
DE2735750C2 (en) Flat-woven papermaker's fabric
EP0116945B1 (en) Covering cloth for the wet end of a papermaking machine
DE3329739C1 (en) Multi-layer covering for paper machines
EP0264881B1 (en) Fabric for the wet end of a paper-making machine
EP0528852B1 (en) Woven fabric made of synthetic monofilaments for use as a dewatering screen in a paper-manufacturing machine
DE60129391T2 (en) Three-layer paper machine fabrics
DE3801739C2 (en)
DE60008999T2 (en) Three-ply paper machine screen
DE60318713T2 (en) FORMING LOOK IN THE FORM OF A COMPOSITE TISSUE WITH TRIPLE CHAIN
DE69727944T2 (en) PAPERMAKER TISSUE WITH BOTH-SIDED ALTERNATIVE TAPES
DE69909628T2 (en) DOUBLE-PAGED FORMING FABRIC FOR PAPER MACHINES
DE2747160A1 (en) PAPER MACHINE TOWEL
DE2902880A1 (en) MULTILAYER, CONTINUOUS DRAINAGE SCREEN AND METHOD FOR ENDLESSING A MULTIPLE DRAINAGE SCREEN
CH659676A5 (en) Ply paper machine.
DE2455185A1 (en) FABRIC FOR THE MAKING OF PAPER
EP0349779B1 (en) Double-layer fabric for use in the wet end section of a papermachine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB GR IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB GR IT LI NL SE

17P Request for examination filed

Effective date: 19870827

17Q First examination report despatched

Effective date: 19881208

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: MARCHI & MITTLER S.R.L.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI NL SE

REF Corresponds to:

Ref document number: 51427

Country of ref document: AT

Date of ref document: 19900415

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3669902

Country of ref document: DE

Date of ref document: 19900503

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3000442

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: ANDREAS KUFFERATH GMBH & CO. KG

Effective date: 19900927

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

NLR1 Nl: opposition has been filed with the epo

Opponent name: ANDREAS KUFFERATH GMBH & CO. KG

26 Opposition filed

Opponent name: ANDREAS KUFFERATH GMBH & CO. KG

Effective date: 19900927

Opponent name: F. OBERDORFER GMBH & C0. KG INDUSTRIEGEWEBE-TECHNI

Effective date: 19901214

NLR1 Nl: opposition has been filed with the epo

Opponent name: F. OBERDORFER GMBH & CO. KG INDUSTRIEGEWEBE-TECHNI

ITTA It: last paid annual fee
PLBM Termination of opposition procedure: date of legal effect published

Free format text: ORIGINAL CODE: 0009276

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: OPPOSITION PROCEDURE CLOSED

27C Opposition proceedings terminated

Effective date: 19911214

NLR2 Nl: decision of opposition
EAL Se: european patent in force in sweden

Ref document number: 86117588.3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19991118

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 19991130

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19991210

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19991223

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19991230

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19991231

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001231

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001231

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001231

BERE Be: lapsed

Owner name: HERMANN WANGNER G.M.B.H. & CO. K.G.

Effective date: 20001231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010701

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20010701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011218

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20020112

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20051220

Year of fee payment: 20

Ref country code: GB

Payment date: 20051220

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20051222

Year of fee payment: 20

Ref country code: SE

Payment date: 20051222

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20051229

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20061216

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

EUG Se: european patent has lapsed