EP0609664A1 - Dryer cloth and process for making the same - Google Patents

Dryer cloth and process for making the same Download PDF

Info

Publication number
EP0609664A1
EP0609664A1 EP19940100333 EP94100333A EP0609664A1 EP 0609664 A1 EP0609664 A1 EP 0609664A1 EP 19940100333 EP19940100333 EP 19940100333 EP 94100333 A EP94100333 A EP 94100333A EP 0609664 A1 EP0609664 A1 EP 0609664A1
Authority
EP
European Patent Office
Prior art keywords
threads
group
longitudinal threads
longitudinal
screen according
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
EP19940100333
Other languages
German (de)
French (fr)
Other versions
EP0609664B1 (en
Inventor
Sylvester Eschmann
Martin Hüser
Walter Halterbeck
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.)
Heimbach GmbH and Co KG
Original Assignee
Thomas Josef Heimbach and Co GmbH
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=6478927&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0609664(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Thomas Josef Heimbach and Co GmbH filed Critical Thomas Josef Heimbach and Co GmbH
Publication of EP0609664A1 publication Critical patent/EP0609664A1/en
Application granted granted Critical
Publication of EP0609664B1 publication Critical patent/EP0609664B1/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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3065—Including strand which is of specific structural definition
    • Y10T442/3089—Cross-sectional configuration of strand material is specified
    • Y10T442/3106—Hollow strand material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3179—Woven fabric is characterized by a particular or differential weave other than fabric in which the strand denier or warp/weft pick count is specified
    • Y10T442/322—Warp differs from weft

Definitions

  • the invention relates to a dryer fabric with longitudinal threads extending in the machine direction and transverse threads made of plastic material extending transversely thereto, a first group of longitudinal threads floating on the paper side over a plurality of transverse threads and a second group of longitudinal threads being present which binds differently from the first group of longitudinal threads .
  • Dryer fabrics are fabrics made of plastic threads with longitudinal threads extending in the machine direction and transverse threads extending transversely thereto. They are used in the drying area of a paper machine, where they guide the paper web over the hot drying cylinders. It is essential that the dryer fabrics ensure good heat transfer and condensation is prevented. It is therefore endeavored to make dryer fabrics as thin as possible and to provide large contact areas.
  • the known dryer fabric has a good contact area due to the use of very wide flat monofilaments, especially for the longitudinal threads of the first group.
  • these threads affect the flexibility of the dryer fabric.
  • the very wide flat monofilaments are special threads that are not easy to process and are expensive.
  • the invention has for its object to provide a dryer fabric of the type mentioned in such a way that good flexibility is achieved despite the large contact area on the paper side.
  • At least two adjacent longitudinal threads of the first group form subgroups of longitudinal threads running at least on the paper side and the longitudinal threads of a subgroup abut each other side by side.
  • the longitudinal threads of a subgroup should preferably also run in the same way in the rest.
  • the term is to be understood to mean a course in which the respective longitudinal threads bind identically into the fabric next to one another.
  • the two contact surfaces are thus produced with the aid of a plurality of longitudinal threads, which are combined to form sub-groups with the same course.
  • Normal longitudinal threads which are preferably designed as flat monofilaments with a cross-sectional ratio of 1.2: 1 to 3: 1, can be used for this purpose. Since the longitudinal threads are movable despite their grouping into subgroups and their mutual contact with one another, the flexibility of the dryer fabric is not impaired by this.
  • a longitudinal thread of the second group runs below two adjacent longitudinal threads of a subgroup. It is particularly preferred that no longitudinal threads of the second group run between two subgroups of longitudinal threads of the first group. If each subgroup consists of only two longitudinal threads, only two longitudinal threads of the first group have one longitudinal thread of the second group. On the one hand, this results in a concentration of the longitudinal threads on the paper side in order to achieve a large contact area; on the other hand, the dryer fabric on the machine side is comparatively open, so that good steam passage is achieved.
  • the longitudinal threads of the second group bind only on the paper side with such transverse threads via which the longitudinal threads of a subgroup float which run above this longitudinal thread of the second group. In this way, a crossing of the longitudinal threads of the first and the second group is avoided.
  • the corresponding is expediently also provided on the lower or machine side of the dryer fabric, in that the longitudinal threads of the second group float on the machine side via those transverse threads which tie in on the machine side with the longitudinal threads of a subgroup which run above the relevant longitudinal thread of the second group.
  • the longitudinal threads of the first group should float on the paper side each over at least three transverse threads before they tie again. However, the floatation can also take up to nine transverse threads.
  • the longitudinal threads of the first group should only be tied in with one cross thread. The same is also provided for the longitudinal threads of the second group, with a mirror image of the longitudinal threads of the first group then being offered.
  • the transverse threads are designed as open hollow monofilaments, as are known, for example, from US Pat. No. 4,251,588. It is possible to design all or only part of the transverse threads as open hollow monofilaments. In the latter case, the other part of the transverse threads should be designed as solid monofilaments, in which case the hollow monofilaments should alternate with the solid monofilaments, preferably always a hollow monofilament with a solid monofilament. The hollow monofilaments can then be flattened using a calendering process in order to achieve the thinnest possible dryer fabric.
  • cross threads of larger diameter alternate with cross threads which have a smaller diameter than that, preferably in such a way that a cross thread with a larger diameter always alternates with a cross thread of smaller diameter.
  • the longitudinal threads of a subgroup are expediently offset in relation to adjacent longitudinal threads of a subgroup in the machine running direction with regard to their integration.
  • the longitudinal threads of the first group should have identical cross-sectional shape and area.
  • the aim is to form a single-layer dryer fabric in order to keep the thickness of the dryer fabric as small as possible.
  • the dryer fabric according to the invention can be produced in a simple manner by using such shrinkable transverse threads for the weaving process and the dryer fabric after The weaving process is heat-treated in such a way that the longitudinal threads of a sub-group, which run in the same direction, lie side by side.
  • plastic threads such as polyester threads or the like are subject to shrinkage when exposed to heat.
  • the shrinkability is used specifically to lay the longitudinal threads of one subgroup together and also the longitudinal threads of two neighboring subgroups, which creates large-area and practically uninterrupted contact areas.
  • the dryer fabric (1) shown in Figure (1) is designed as a single-layer fabric and has a machine running direction in the directions of arrow A.
  • Round transverse threads run at right angles to this machine running direction A, for example designated (2). They are designed as hollow monofilaments, that is to say they have cavities in the untreated state - designated by (3) for example.
  • the transverse threads (2) consist of a plastic material that is highly shrinkable when heat is applied, for example polyester.
  • transverse threads (2) tie longitudinal threads in machine direction A, which are formed as flat monofilaments with a rectangular cross-section.
  • a first group of longitudinal threads - for example designated (4, 5, 6, 7) - floats in each case Via three transverse threads on the paper side, before the longitudinal threads (4, 5, 6, 7) tie in with a transverse thread (2) on the underside on the machine side.
  • Two longitudinal threads (4, 5) and (6, 7) lying next to each other run in the same direction, so they have an identical and always parallel path.
  • Two longitudinal threads (4, 5) and (6, 7) each form subgroups in the first group of longitudinal threads (4, 5, 6, 7), the subgroups running next to each other, but in the machine direction A each by two transverse threads (2nd ) are offset.
  • Another longitudinal thread (8, 9) runs, which together form a second group of longitudinal threads.
  • the longitudinal threads (8, 9) of the second group bind on the paper side only with transverse threads (2) via which the longitudinal threads (4, 5) or (6, 7) of the associated subgroup float.
  • Two longitudinal threads (8, 9) of the second group running alongside one another are also offset by two transverse threads (2) in machine direction A with regard to their integration.
  • Figure (1) shows the dryer fabric (1) in the state after the weaving process.
  • the longitudinal threads (4, 5) or (6, 7) of a subgroup are then at a distance from one another which is somewhat larger than the width of the longitudinal threads (8, 9) of the second group.
  • the drying fabric (1) thus produced is then subjected to a heat treatment at temperatures at which the transverse threads (2) shrink considerably. This has the consequence that the longitudinal threads (4, 5) and (6, 7) come to rest against each other, whereby they are on the paper side over the longitudinal threads (8, 9) of the second group and on the machine side between the respective transverse threads (2) and the longitudinal thread (8, 9) push.
  • the adjacent longitudinal threads (5, 6) of the two subgroups then also come into contact. This creates the fabric image according to Figure (2), which is characterized by large contact areas on the paper side.
  • the dryer fabric (1) is then subjected to a calendering treatment, as a result of which the transverse threads (2) are flattened in such a way that the inside of the cavities (3) come into contact with one another, so that there are no more cavities (3).

Landscapes

  • Paper (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Woven Fabrics (AREA)
  • Drying Of Solid Materials (AREA)
  • Glass Compositions (AREA)
  • Ropes Or Cables (AREA)

Abstract

A dryer screen has a paper side and a machine side. A plurality of machine direction threads extend in the direction of movement of the screen. The machine direction threads are arrayed in first and second groups. The threads of the groups are bound to the screen through different binding pattern repeats. A plurality of cross threads extend generally transverse to the machine direction threads. The threads of the first group are arrayed in first and second subgroups offset with respect to the direction of movement of the screen. Each subgroup comprises at least two abutting contiguous machine direction threads having a binding pattern repeat floating on the paper side over a predetermined plurality of cross threads.

Description

Die Erfindung betrifft ein Trockensieb mit sich in Maschinenlaufrichtung erstreckenden Längsfäden und sich quer dazu erstreckenden Querfäden aus Kunststoffmaterial, wobei eine erste Gruppe von Längsfäden auf der Papierseite über mehrere Querfäden flottiert und eine zweite Gruppe von Längsfäden vorhanden ist, die unterschiedlich zur ersten Gruppe von Längsfäden einbindet.The invention relates to a dryer fabric with longitudinal threads extending in the machine direction and transverse threads made of plastic material extending transversely thereto, a first group of longitudinal threads floating on the paper side over a plurality of transverse threads and a second group of longitudinal threads being present which binds differently from the first group of longitudinal threads .

Trockensiebe sind aus Kunststoffäden bestehende Gewebe mit sich in Maschinenlaufrichtung erstreckenden Längsfäden und sich quer dazu erstreckenden Querfäden. Sie werden im Trockenbereich einer Papiermaschine eingesetzt und führen dort die Papierbahn über die heißen Trockenzylinder. Dabei ist es wesentlich, daß die Trockensiebe für einen guten Wärmeübergang sorgen und eine Kondensatbildung verhindert wird. Man ist deshalb bestrebt, Trockensiebe möglichst dünn auszubilden und große Kontaktflächen zur Verfügung zu stellen.Dryer fabrics are fabrics made of plastic threads with longitudinal threads extending in the machine direction and transverse threads extending transversely thereto. They are used in the drying area of a paper machine, where they guide the paper web over the hot drying cylinders. It is essential that the dryer fabrics ensure good heat transfer and condensation is prevented. It is therefore endeavored to make dryer fabrics as thin as possible and to provide large contact areas.

Für Trockensiebe sind eine Vielzahl von Gewebekonstruktionen bekannt. Lediglich beispielhaft wird auf die PCT-Anmeldung WO 91/190̸44 und den darin angegebenen Stand der Technik verwiesen. In dieser Druckschrift sind Papiermaschinengewebe offenbart, bei denen eine erste Gruppe von Längsfäden auf der Papierseite über mehrere Querfäden flottiert, wobei die Längsfäden als Flachmonofilamente ausgebildet sind. Diese Gruppe von Längsfäden verläuft oberhalb einer zweiten Gruppe von Längsfaden, die ebenfalls als Flachmonofilamente ausgebildet sein können.A large number of fabric constructions are known for dryer fabrics. By way of example only, reference is made to PCT application WO 91 / 190-44 and the prior art specified therein. This publication discloses paper machine fabrics in which a first group of longitudinal threads floats on the paper side over a plurality of transverse threads, the longitudinal threads being designed as flat monofilaments. This group of longitudinal threads runs above a second group of longitudinal threads, which are also called flat monofilaments can be trained.

Das bekannte Trockensieb hat zwar eine gute Kontaktfläche auf Grund der Verwendung sehr breiter Flachmonofilamente insbesondere für die Längsfäden der ersten Gruppe. Diese Fäden beeinträchtigen jedoch die Flexibilität des Trockensiebes. Außerdem handelt es sich bei den sehr breiten Flachmonofilamenten um Spezialfäden, die nicht einfach zu verarbeiten und teuer sind.The known dryer fabric has a good contact area due to the use of very wide flat monofilaments, especially for the longitudinal threads of the first group. However, these threads affect the flexibility of the dryer fabric. In addition, the very wide flat monofilaments are special threads that are not easy to process and are expensive.

Der Erfindung liegt die Aufgabe zugrunde, ein Trockensieb der eingangs genannten Art so auszubilden, daß trotz großer Kontaktfläche auf der Papierseite eine gute Flexibilität erzielt wird.The invention has for its object to provide a dryer fabric of the type mentioned in such a way that good flexibility is achieved despite the large contact area on the paper side.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß jeweils mindestens zwei benachbarte Längsfäden der ersten Gruppe Untergruppen von zumindest auf der Papierseite gleichbindend verlaufenden Längsfäden bilden und die Längsfäden einer Untergruppe Seite an Seite aneinander anliegen. Bevorzugt sollten die Längsfäden einer Untergruppe auch im übrigen gleichbindend verlaufen. Dabei ist unter dem Begriff gleichbindend ein Verlauf zu verstehen, bei dem die betreffenden Längsfäden nebeneinander identisch in das Gewebe einbinden.This object is achieved according to the invention in that at least two adjacent longitudinal threads of the first group form subgroups of longitudinal threads running at least on the paper side and the longitudinal threads of a subgroup abut each other side by side. The longitudinal threads of a subgroup should preferably also run in the same way in the rest. In this context, the term is to be understood to mean a course in which the respective longitudinal threads bind identically into the fabric next to one another.

Nach der Erfindung werden also die beiden Kontaktflächen mit Hilfe mehrerer Längsfäden, die zu Untergruppen mit gleichbindendem Verlauf zusammengefaßt sind, erzeugt. Dabei können hierfür normale Längsfäden, die vorzugsweise als Flachmonofilamente mit einem Querschnittsverhältnis von 1,2:1 bis 3:1 ausgebildet sind, verwendet werden. Da die Längsfäden trotz ihrer Zusammenfassung in Untergruppen und ihrer gegenseitigen Berührung untereinander beweglich sind, wird hierdurch die Flexibilität des Trockensiebes nicht beeinträchtigt.According to the invention, the two contact surfaces are thus produced with the aid of a plurality of longitudinal threads, which are combined to form sub-groups with the same course. Normal longitudinal threads, which are preferably designed as flat monofilaments with a cross-sectional ratio of 1.2: 1 to 3: 1, can be used for this purpose. Since the longitudinal threads are movable despite their grouping into subgroups and their mutual contact with one another, the flexibility of the dryer fabric is not impaired by this.

In Ausbildung der Erfindung ist vorgesehen, daß von der Papierseite her gesehen unterhalb von zwei benachbarten Längsfäden einer Untergruppe ein Längsfaden der zweiten Gruppe verläuft. Dabei ist besonders bevorzugt, daß zwischen zwei Untergruppen von Längsfäden der ersten Gruppe keine Längsfäden der zweiten Gruppe verlaufen. Sofern jede Untergruppe nur aus zwei Längsfäden besteht, kommen auf zwei Längsfäden der ersten Gruppe nur ein Längsfaden der zweiten Gruppe. Einerseits wird hierdurch eine Konzentrierung der Längsfäden auf der Papierseite zwecks Erzielung einer großen Kontaktfläche erreicht, andererseits ist das Trockensieb auf der Maschinenseite vergleichsweise offen, wodurch ein guter Dampfdurchgang erzielt wird.In an embodiment of the invention, as seen from the paper side, a longitudinal thread of the second group runs below two adjacent longitudinal threads of a subgroup. It is particularly preferred that no longitudinal threads of the second group run between two subgroups of longitudinal threads of the first group. If each subgroup consists of only two longitudinal threads, only two longitudinal threads of the first group have one longitudinal thread of the second group. On the one hand, this results in a concentration of the longitudinal threads on the paper side in order to achieve a large contact area; on the other hand, the dryer fabric on the machine side is comparatively open, so that good steam passage is achieved.

In weiterer Ausgestaltung der Erfindung ist vorgesehen, daß die Längsfäden der zweiten Gruppe nur mit solchen Querfäden papierseitig einbinden, über die die Längsfäden einer Untergruppe flottieren, welche oberhalb dieses Längsfadens der zweiten Gruppe verlaufen. Auf diese Weise wird eine Kreuzung der Längsfäden der ersten und der zweiten Gruppe vermieden. Entsprechendes ist zweckmäßigerweise auch an der Unter- bzw. Maschinenseite des Trockensiebes vorgesehen, indem die Längsfäden der zweiten Gruppe über diejenigen Querfäden maschinenseitig flottieren, die mit den Längsfäden einer Untergruppe maschinenseitig einbinden, welche oberhalb des betreffenden Längsfadens der zweiten Gruppe verlaufen.In a further embodiment of the invention it is provided that the longitudinal threads of the second group bind only on the paper side with such transverse threads via which the longitudinal threads of a subgroup float which run above this longitudinal thread of the second group. In this way, a crossing of the longitudinal threads of the first and the second group is avoided. The corresponding is expediently also provided on the lower or machine side of the dryer fabric, in that the longitudinal threads of the second group float on the machine side via those transverse threads which tie in on the machine side with the longitudinal threads of a subgroup which run above the relevant longitudinal thread of the second group.

Die Längsfäden der ersten Gruppe sollten papierseitig jeweils über mindestens drei Querfäden flottieren, bevor sie erneut einbinden. Die Flottierung kann jedoch auch über bis zu neun Querfäden gehen. Maschinenseitig sollten die Längsfäden der ersten Gruppe nur mit einem Querfaden einbinden. Entsprechendes ist auch für die Längsfäden der zweiten Gruppe vorgesehen, wobei sich dann ein spiegelbildlicher Verlauf zu den Längsfäden der ersten Gruppe anbietet.The longitudinal threads of the first group should float on the paper side each over at least three transverse threads before they tie again. However, the floatation can also take up to nine transverse threads. On the machine side, the longitudinal threads of the first group should only be tied in with one cross thread. The same is also provided for the longitudinal threads of the second group, with a mirror image of the longitudinal threads of the first group then being offered.

Nach einem weiteren Merkmal der Erfindung ist vorgesehen, daß die Querfäden als offene Hohlmonofilamente ausgebildet sind, wie sie beispielsweise aus der US-PS 4 251 588 bekannt sind. Dabei besteht die Möglichkeit, entweder sämtliche oder nur einen Teil der Querfäden als offene Hohlmonofilamente auszubilden. Im letzteren Fall sollte der andere Teil der Querfäden als massive Monofilamente ausgebildet sein, wobei sich dann die Hohlmonofilamente mit den massiven Monofilamenten abwechseln sollten, und zwar vorzugsweise immer ein Hohlmonofilament mit einem massiven Monofilament. Zwecks Erzielung eines möglichst dünnen Trockensiebes können dann die Hohlmonofilamente mit Hilfe eines Kalandriervorgangs abgeplattet ausgebildet sein.According to a further feature of the invention, it is provided that the transverse threads are designed as open hollow monofilaments, as are known, for example, from US Pat. No. 4,251,588. It is possible to design all or only part of the transverse threads as open hollow monofilaments. In the latter case, the other part of the transverse threads should be designed as solid monofilaments, in which case the hollow monofilaments should alternate with the solid monofilaments, preferably always a hollow monofilament with a solid monofilament. The hollow monofilaments can then be flattened using a calendering process in order to achieve the thinnest possible dryer fabric.

In weiterer Ausgestaltung der Erfindung ist vorgesehen, daß sich Querfäden größeren Durchmessers mit Querfäden abwechseln, die dem gegenüber einen kleineren Durchmesser haben, und zwar vorzugsweise in der Weise, daß immer ein Querfaden mit einem größere Durchmesser sich mit einem Querfaden kleineren Durchmessers abwechselt.In a further embodiment of the invention it is provided that cross threads of larger diameter alternate with cross threads which have a smaller diameter than that, preferably in such a way that a cross thread with a larger diameter always alternates with a cross thread of smaller diameter.

Die Längsfäden einer Untergruppe sind zweckmäßigerweise gegenüber benachbarten Längsfäden einer Untergruppe in Maschinenlaufrichtung hinsichtlich ihrer Einbindung versetzt. Außerdem sollten die Längsfäden der ersten Gruppe identische Querschnittsform und -fläche haben.The longitudinal threads of a subgroup are expediently offset in relation to adjacent longitudinal threads of a subgroup in the machine running direction with regard to their integration. In addition, the longitudinal threads of the first group should have identical cross-sectional shape and area.

Obwohl für das Trockensieb auch mehrlagige Ausführungen in Frage kommen, wird die Ausbildung als einlagiges Trockensieb angestrebt, um die Dicke des Trockensiebes möglichst gering zu halten.Although multi-layer designs are also possible for the dryer fabric, the aim is to form a single-layer dryer fabric in order to keep the thickness of the dryer fabric as small as possible.

Die Herstellung des erfindungsgemäßen Trockensiebes kann in einfacher Weise dadurch geschehen, daß für den Webprozeß derart schrumpffähige Querfäden verwendet und das Trockensieb nach dem Webprozeß derart wärmebehandelt wird, daß sich die jeweils gleichbindend verlaufenden Längsfäden einer Untergruppe Seite an Seite aneinander anlegen. Bekannt ist, daß Kunststoffäden wie beispielsweise Polyesterfäden oder dergleichen bei Beaufschlagung mit Hitze einem Schrumpf unterliegen. Die Schrumpffähigkeit wird hier zum Aneinanderanlegen der Längsfäden einer Untergruppe und auch der Längsfäden von zwei benachbarten Untergruppen gezielt genutzt, wodurch großflächige und praktisch nicht unterbrochene Kontaktflächen entstehen.The dryer fabric according to the invention can be produced in a simple manner by using such shrinkable transverse threads for the weaving process and the dryer fabric after The weaving process is heat-treated in such a way that the longitudinal threads of a sub-group, which run in the same direction, lie side by side. It is known that plastic threads such as polyester threads or the like are subject to shrinkage when exposed to heat. The shrinkability is used specifically to lay the longitudinal threads of one subgroup together and also the longitudinal threads of two neighboring subgroups, which creates large-area and practically uninterrupted contact areas.

In der Zeichnung ist die Erfindung an Hand eines Ausführungsbeispiels näher veranschaulicht. Es zeigen:

Figur (1)
einen Ausschnitt eines erfindungsgemäßen Trockensiebes in perspektivischer Ansicht auf dessen Papierseite nach dem Webprozeß und vor dem Schrumpfprozeß und
Figur (2)
der Ausschnitt gemäß Figur (1) nach dem Schrumpfprozeß in gleicher Ansicht.
In the drawing, the invention is illustrated in more detail using an exemplary embodiment. Show it:
Figure (1)
a section of a dryer fabric according to the invention in a perspective view on its paper side after the weaving process and before the shrinking process and
Figure (2)
the section according to Figure (1) after the shrinking process in the same view.

Das in Figur (1) dargestellte Trockensieb (1) ist als einlagiges Gewebe ausgebildet und hat eine in den Richtungen des Pfeils A gehende Maschinenlaufrichtung. Quer zu dieser Maschinenlaufrichtung A verlaufen runde Querfäden - beispielhaft mit (2) bezeichnet -. Sie sind als Hohlmonofilamente ausgebildet, weisen also im unbehandelten Zustand Hohlräume - beispielhaft mit (3) bezeichnet - auf. Die Querfäden (2) bestehen aus einem bei Anwendung von Hitze hochschrumpffähigen Kunststoffmaterial, beispielsweise Polyester.The dryer fabric (1) shown in Figure (1) is designed as a single-layer fabric and has a machine running direction in the directions of arrow A. Round transverse threads run at right angles to this machine running direction A, for example designated (2). They are designed as hollow monofilaments, that is to say they have cavities in the untreated state - designated by (3) for example. The transverse threads (2) consist of a plastic material that is highly shrinkable when heat is applied, for example polyester.

Mit den Querfäden (2) binden in Maschinenlaufrichtung A gehende Längsfäden ein, die als Flachmonofilamente mit rechteckigem Querschnitt ausgebildet sind. Eine erste Gruppe von Längsfäden - beispielhaft mit (4, 5, 6, 7) bezeichnet - flottiert jeweils über drei Querfäden auf der Papierseite, bevor die Längsfäden (4, 5, 6, 7) mit einem Querfaden (2) untenseitig auf der Maschinenseite einbinden. Dabei verlaufen jeweils zwei nebeneinanderliegende Längsfäden (4, 5) bzw. (6, 7) gleichbindig, haben also einen identischen und immer parallel zueinander gehenden Verlauf. Jeweils zwei Längsfäden (4, 5) bzw. (6, 7) bilden damit Untergruppen in der ersten Gruppe von Längsfäden (4, 5, 6, 7), wobei die Untergruppen nebeneinander verlaufen, jedoch in Maschinenlaufrichtung A jeweils um zwei Querfäden (2) versetzt sind.With the transverse threads (2) tie longitudinal threads in machine direction A, which are formed as flat monofilaments with a rectangular cross-section. A first group of longitudinal threads - for example designated (4, 5, 6, 7) - floats in each case Via three transverse threads on the paper side, before the longitudinal threads (4, 5, 6, 7) tie in with a transverse thread (2) on the underside on the machine side. Two longitudinal threads (4, 5) and (6, 7) lying next to each other run in the same direction, so they have an identical and always parallel path. Two longitudinal threads (4, 5) and (6, 7) each form subgroups in the first group of longitudinal threads (4, 5, 6, 7), the subgroups running next to each other, but in the machine direction A each by two transverse threads (2nd ) are offset.

Zwischen zwei eine Untergruppe bildenden Längsfäden (4, 5) bzw. (6, 7) verläuft jeweils ein weiterer Längsfaden (8, 9), die zusammen eine zweite Gruppe von Längsfäden bilden. Sie haben einen zu den Längsfäden (4, 5) bzw. (6, 7) der ersten Gruppe spiegelbildlichen Verlauf, d. h. sie binden jeweils nur mit einem Querfaden (2) an der Papierseite ein und flottieren dann maschinenseitig über drei Querfäden (2). Die Längsfäden (8, 9) der zweiten Gruppe binden dabei papierseitig nur mit solchen Querfäden (2) ein, über die die Längsfäden (4, 5) bzw. (6, 7) der zugehörigen Untergruppe flottieren. Zwei nebeneinander verlaufende Längsfäden (8, 9) der zweiten Gruppe sind hinsichtlich ihrer Einbindung ebenfalls um jeweils zwei Querfäden (2) in Maschinenlaufrichtung A versetzt.Between two longitudinal threads (4, 5) and (6, 7) forming a subgroup, respectively, another longitudinal thread (8, 9) runs, which together form a second group of longitudinal threads. You have a mirror image of the longitudinal threads (4, 5) or (6, 7) of the first group, d. H. they bind each with only one transverse thread (2) on the paper side and then float on the machine side via three transverse threads (2). The longitudinal threads (8, 9) of the second group bind on the paper side only with transverse threads (2) via which the longitudinal threads (4, 5) or (6, 7) of the associated subgroup float. Two longitudinal threads (8, 9) of the second group running alongside one another are also offset by two transverse threads (2) in machine direction A with regard to their integration.

Figur (1) zeigt das Trockensieb (1) im Zustand nach dem Webprozeß. Die Längsfäden (4, 5) bzw. (6, 7) einer Untergruppe haben dann einen Abstand zueinander, der etwas größer ist als die Breite der Längsfäden (8, 9) der zweiten Gruppe. Das so hergestellte Trockensieb (1) wird dann einer Wärmebehandlung bei Temperaturen unterzogen, bei denen die Querfäden (2) erheblich schrumpfen. Dies hat zur Folge, daß die Längsfäden (4, 5) bzw. (6, 7) gegenseitig zur Anlage kommen, wobei sie sich an der Papierseite über die Längsfäden (8, 9) der zweiten Gruppe und an der Maschinenseite zwischen den jeweiligen Querfaden (2) und den jeweils dort flottierenden Längsfaden (8, 9) schieben. Auch die benachbarten Längsfäden (5, 6) der beiden Untergruppen kommen dann zur Anlage. Es entsteht auf diese Weise das Gewebebild gemäß Figur (2), das durch große Kontaktflächen auf der Papierseite gekennzeichnet ist.Figure (1) shows the dryer fabric (1) in the state after the weaving process. The longitudinal threads (4, 5) or (6, 7) of a subgroup are then at a distance from one another which is somewhat larger than the width of the longitudinal threads (8, 9) of the second group. The drying fabric (1) thus produced is then subjected to a heat treatment at temperatures at which the transverse threads (2) shrink considerably. This has the consequence that the longitudinal threads (4, 5) and (6, 7) come to rest against each other, whereby they are on the paper side over the longitudinal threads (8, 9) of the second group and on the machine side between the respective transverse threads (2) and the longitudinal thread (8, 9) push. The adjacent longitudinal threads (5, 6) of the two subgroups then also come into contact. This creates the fabric image according to Figure (2), which is characterized by large contact areas on the paper side.

Das Trockensieb (1) wird anschließend einer Kalandrierbehandlung unterworfen, wodurch die Querfäden (2) derart flachgedrückt werden, daß die Innenseiten der Hohlräume (3) zur gegenseitigen Anlage kommen, also keine Hohlräume (3) mehr vorhanden sind. Dabei entsteht dann ein sehr dünnes Trockensieb (1) mit günstigen Wärmeübertragungseigenschaften.The dryer fabric (1) is then subjected to a calendering treatment, as a result of which the transverse threads (2) are flattened in such a way that the inside of the cavities (3) come into contact with one another, so that there are no more cavities (3). This creates a very thin dryer fabric (1) with favorable heat transfer properties.

Claims (21)

Trockensieb (1) mit sich in Maschinenlaufrichtung (A) erstreckenden Längsfäden (4, 5, 6, 7, 8, 9) und sich quer dazu erstreckenden Querfäden (2) aus Kunststoffmaterial, wobei eine erste Gruppe von Längsfäden (4, 5, 6, 7) auf der Papierseite über mehrere Querfäden (2) flottiert und eine zweite Gruppe von Längsfäden (8, 9) vorhanden ist, die unterschiedlich zur ersten Gruppe von Längsfäden (4, 5, 6, 7) einbindet,
dadurch gekennzeichnet, daß jeweils mindestens zwei benachbarte Längsfäden (4, 5) bzw. (6, 7) der ersten Gruppe Untergruppen von zumindest auf der Papierseite gleichbindend verlaufenden Längsfäden (4, 5) bzw. (6, 7) bilden und die Längsfäden (4, 5) bzw. (6, 7) einer Untergruppe Seite an Seite aneinander anliegen.Dryer screen (1) with longitudinal threads (4, 5, 6, 7, 8, 9) extending in machine direction (A) and transverse threads (2) made of plastic material extending transversely thereto, a first group of longitudinal threads (4, 5, 6 , 7) floated on the paper side over a plurality of transverse threads (2) and a second group of longitudinal threads (8, 9) is present which integrates differently from the first group of longitudinal threads (4, 5, 6, 7),
characterized in that in each case at least two adjacent longitudinal threads (4, 5) or (6, 7) of the first group form subgroups of longitudinal threads (4, 5) or (6, 7) which run identically at least on the paper side, and the longitudinal threads ( 4, 5) or (6, 7) of a subgroup side by side. Trockensieb nach Anspruch (1),
dadurch gekennzeichnet, daß die Längsfäden (4, 5) bzw. (6, 7) einer Untergruppe auch im übrigen gleichbindend verlaufen.Dryer screen according to claim (1),
characterized in that the longitudinal threads (4, 5) or (6, 7) of a sub-group also run identically in the rest. Trockensieb nach Anspruch (1) oder (2),
dadurch gekennzeichnet, daß von der Papierseite her gesehen unterhalb von zwei benachbarten Längsfäden (4, 5) bzw. (6, 7) einer Untergruppe ein Längsfaden (8, 9) der zweiten Gruppe verläuft.Dryer screen according to claim (1) or (2),
characterized in that, seen from the paper side, a longitudinal thread (8, 9) of the second group runs beneath two adjacent longitudinal threads (4, 5) or (6, 7) of a sub-group. Trockensieb nach einem der Ansprüche (1) bis (3),
dadurch gekennzeichnet, daß zwischen zwei Untergruppen von Längsfäden (4, 5) bzw. (6, 7) der ersten Gruppe keine Längsfäden der zweiten Gruppe verlaufen.Dryer screen according to one of claims (1) to (3),
characterized in that between two subgroups of Longitudinal threads (4, 5) or (6, 7) of the first group run no longitudinal threads of the second group. Trockensieb nach einem der Ansprüche (1) bis (4),
dadurch gekennzeichnet, daß die Längsfäden (8, 9) der zweiten Gruppe nur mit solchen Querfäden (2) papierseitig einbinden, über die die Längsfäden (4, 5) bzw. (6, 7) einer Untergruppe flottieren, welche oberhalb dieses Längsfadens (8, 9) der zweiten Gruppe verlaufen.Dryer screen according to one of claims (1) to (4),
characterized in that the longitudinal threads (8, 9) of the second group bind on the paper side only with such transverse threads (2) via which the longitudinal threads (4, 5) or (6, 7) float of a sub-group which above this longitudinal thread (8 , 9) of the second group. Trockensieb nach einem der Ansprüche (1) bis (5),
dadurch gekennzeichnet, daß die Längsfäden (8, 9) der zweiten Gruppe über diejenigen Querfäden (2) maschinenseitig flottieren, die mit den Längsfäden (4, 5) bzw. (6, 7) einer Untergruppe maschinenseitig einbinden, welche oberhalb des betreffenden Längsfadens (8, 9) der zweiten Gruppe verlaufen.Dryer screen according to one of claims (1) to (5),
characterized in that the longitudinal threads (8, 9) of the second group float on the machine side via those transverse threads (2) which tie in on the machine side with the longitudinal threads (4, 5) or (6, 7) of a subgroup which are above the relevant longitudinal thread ( 8, 9) of the second group. Trockensieb nach einem der Ansprüche (1) bis (6),
dadurch gekennzeichnet, daß die Längsfäden (8, 9) der ersten Gruppe papierseitig jeweils über drei bis neun Querfäden (2) flottieren.Dryer screen according to one of claims (1) to (6),
characterized in that the longitudinal threads (8, 9) of the first group float on the paper side in each case via three to nine transverse threads (2). Trockensieb nach einem der Ansprüche (1) bis (7),
dadurch gekennzeichnet, daß die Längsfäden (4, 5, 6, 7) der ersten Gruppe maschinenseitig jeweils nur mit einem Querfaden (2) einbinden.Dryer screen according to one of claims (1) to (7),
characterized in that the longitudinal threads (4, 5, 6, 7) of the first group each have only one transverse thread (2) on the machine side. Trockensieb nach einem der Ansprüche (1) bis (8),
dadurch gekennzeichnet, daß die Längsfäden (8, 9) der zweiten Gruppe maschinenseitig über drei bis neun Querfäden (2) flottieren.Dryer screen according to one of claims (1) to (8),
characterized in that the longitudinal threads (8, 9) of the second group float on the machine side via three to nine transverse threads (2). Trockensieb nach einem der Ansprüche (1) bis (9),
dadurch gekennzeichnet, daß die Längsfäden (8, 9) der zweiten Gruppe papierseitig jeweils nur mit einem Querfaden (2) einbinden.Dryer screen according to one of claims (1) to (9),
characterized in that the longitudinal threads (8, 9) of the second group each have only one transverse thread on the paper side (2) integrate. Trockensieb nach einem der Ansprüche (1) bis (10̸),
dadurch gekennzeichnet, daß die Längsfäden (4, 5, 6, 7) der ersten Gruppe spiegelbildlich zu den Längsfäden (8, 9) der zweiten Gruppe einbinden.Dryer screen according to one of claims (1) to (10̸),
characterized in that the longitudinal threads (4, 5, 6, 7) of the first group incorporate a mirror image of the longitudinal threads (8, 9) of the second group. Trockensieb nach einem der Ansprüche (1) bis (11),
dadurch gekennzeichnet, daß die Querfäden (2) als offene Hohlmonofilamente ausgebildet sind.Dryer screen according to one of claims (1) to (11),
characterized in that the transverse threads (2) are designed as open hollow monofilaments. Trockensieb nach einem der Ansprüche (1) bis (11),
dadurch gekennzeichnet, daß sich Querfäden, die als offene Hohlmonofilamente ausgebildet sind, mit Querfäden abwechseln, die als massive Monofilamente ausgebildet sind.Dryer screen according to one of claims (1) to (11),
characterized in that cross threads, which are designed as open hollow monofilaments, alternate with cross threads, which are designed as solid monofilaments. Trockensieb nach Anspruch (12) oder (13),
dadurch gekennzeichnet, daß die als Hohlmonofilamente ausgebildeten Querfäden (2) abgeplattet sind.Dryer screen according to claim (12) or (13),
characterized in that the transverse threads (2) designed as hollow monofilaments are flattened. Trockensieb nach einem der Ansprüche (1) bis (14),
dadurch gekennzeichnet, daß sich Querfäden größeren Durchmessers mit Querfäden abwechseln, die demgegenüber einen kleineren Durchmesser haben.Dryer screen according to one of claims (1) to (14),
characterized in that transverse threads of larger diameter alternate with transverse threads which, in contrast, have a smaller diameter. Trockensieb nach einem der Ansprüche (1) bis (15),
dadurch gekennzeichnet, daß wenigstens die Längsfäden (4, 5, 6, 7) der ersten Gruppe als Flachmonofilamente ausgebildet sind, deren Erstreckung in der Gewebeebene größer ist als senkrecht dazu.Dryer screen according to one of claims (1) to (15),
characterized in that at least the longitudinal threads (4, 5, 6, 7) of the first group are formed as flat monofilaments, the extension of which in the plane of the fabric is greater than perpendicular to it. Trockensieb nach Anspruch (16),
dadurch gekennzeichnet, daß die Längsfäden (4, 5, 6, 7) ein Querschnittsverhältnis von 1,2:1 bis 3:1 haben.Dryer screen according to claim (16),
characterized in that the longitudinal threads (4, 5, 6, 7) have a cross-sectional ratio of 1.2: 1 to 3: 1. Trockensieb nach einem der Ansprüche (1) bis (17),
dadurch gekennzeichnet, daß die Längsfäden (4, 5) bzw. (6, 7) einer Untergruppe gegenüber benachbarten Längsfäden (4, 5) bzw. (6, 7) einer Untergruppe in Maschinenlaufrichtung hinsichtlich ihrer Einbindung versetzt sind.Dryer screen according to one of claims (1) to (17),
characterized in that the longitudinal threads (4, 5) or (6, 7) of a subgroup are offset in relation to adjacent longitudinal threads (4, 5) or (6, 7) of a subgroup in the machine running direction with regard to their integration. Trockensieb nach einem der Ansprüche (1) bis (18),
dadurch gekennzeichnet, daß die Längsfäden (4, 5, 6, 7) der ersten Gruppe identische Querschnittsform und -fläche aufweisen.Dryer screen according to one of claims (1) to (18),
characterized in that the longitudinal threads (4, 5, 6, 7) of the first group have identical cross-sectional shape and area. Trockensieb nach einem der Ansprüche (1) bis (19),
dadurch gekennzeichnet, daß das Trockensieb einlagig ausgebildet ist.Dryer screen according to one of claims (1) to (19),
characterized in that the dryer fabric is formed in one layer. Verfahren zur Herstellung eines Trockensiebs nach einem der Ansprüche (1) bis (20̸),
dadurch gekennzeichnet, daß für den Webprozeß derart schrumpffähige Querfäden (2) verwendet und das Trockensieb (1) nach dem Webprozeß derart wärmebehandelt wird, daß sich die jeweils gleichbindend verlaufenden Längsfäden (4, 5) bzw. (6, 7) einer Untergruppe Seite an Seite aneinander anlegen.Method for producing a dryer fabric according to one of claims (1) to (20̸),
characterized in that such shrinkable transverse threads (2) are used for the weaving process and the dryer fabric (1) is heat-treated after the weaving process in such a way that the longitudinal threads (4, 5) or (6, 7), respectively, which run in the same direction, adhere to a subgroup side Lay the page together.
EP19940100333 1993-01-26 1994-01-12 Dryer cloth and process for making the same Expired - Lifetime EP0609664B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4302031 1993-01-26
DE4302031A DE4302031C1 (en) 1993-01-26 1993-01-26 Fourdrinier for paper mfg. machine for large contact surface area - comprises oven plastics filaments with gp. in sub-gps. shrunk for longitudinal filaments side by side, for flexibility

Publications (2)

Publication Number Publication Date
EP0609664A1 true EP0609664A1 (en) 1994-08-10
EP0609664B1 EP0609664B1 (en) 1998-04-01

Family

ID=6478927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940100333 Expired - Lifetime EP0609664B1 (en) 1993-01-26 1994-01-12 Dryer cloth and process for making the same

Country Status (7)

Country Link
US (1) US5465764A (en)
EP (1) EP0609664B1 (en)
AT (1) ATE164648T1 (en)
CA (1) CA2113985C (en)
DE (2) DE4302031C1 (en)
FI (1) FI96885C (en)
NO (1) NO940262L (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0837179A2 (en) * 1996-10-11 1998-04-22 Albany International Corp. Papermaker's fabric having paired identical machine-direction yarns weaving as one
EP0851057A2 (en) * 1996-12-02 1998-07-01 Albany International Corp. Papermaker's fabric having paired different machine-direction yarns weaving as one
DE19923088C1 (en) * 1999-05-20 2000-10-12 Heimbach Gmbh Thomas Josef Woven blanket for drying section of papermaking machine has paired longitudinal filaments pulled out into long and short loops at end sides for smooth surface on paper side when locked together by inserted wire

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9807704D0 (en) * 1998-04-09 1998-06-10 Scapa Group Plc Fabric and seam construction
US5996378A (en) * 1998-05-20 1999-12-07 Guilford Mills, Inc. Knitted textile fabric with integrated fluid-containing or -conveying tubular segments
US6585006B1 (en) 2000-02-10 2003-07-01 Weavexx Corporation Papermaker's forming fabric with companion yarns
FI107550B (en) 2000-05-18 2001-08-31 Tamfelt Oyj Abp Drier wire
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
CN100357508C (en) * 2001-07-05 2007-12-26 阿斯坦约翰逊公司 Industrial fabric including yarn assemblies
US20080260744A1 (en) * 2002-09-09 2008-10-23 Omeros Corporation G protein coupled receptors and uses thereof
US7048012B2 (en) * 2002-10-24 2006-05-23 Albany International Corp. Paired warp triple layer forming fabrics with optimum sheet building characteristics
US6834684B2 (en) * 2002-10-24 2004-12-28 Albany International Corp. Paired warp triple layer forming fabrics with optimum sheet building characteristics
US6837277B2 (en) 2003-01-30 2005-01-04 Weavexx Corporation Papermaker's forming fabric
US6860969B2 (en) 2003-01-30 2005-03-01 Weavexx Corporation Papermaker's forming fabric
US7059357B2 (en) 2003-03-19 2006-06-13 Weavexx Corporation Warp-stitched multilayer papermaker's fabrics
US6896009B2 (en) 2003-03-19 2005-05-24 Weavexx Corporation Machine direction yarn stitched triple layer papermaker's forming fabrics
US7243687B2 (en) 2004-06-07 2007-07-17 Weavexx Corporation Papermaker's forming fabric with twice as many bottom MD yarns as top MD yarns
DE102004035523A1 (en) * 2004-07-22 2006-02-09 Voith Fabrics Patent Gmbh Paper machine clothing
DE102004035519A1 (en) * 2004-07-22 2006-02-09 Voith Fabrics Patent Gmbh Paper machine clothing
DE102004035522A1 (en) * 2004-07-22 2006-03-16 Voith Fabrics Patent Gmbh Paper machine clothing
US7523626B2 (en) * 2004-10-01 2009-04-28 Saint-Gobain Performance Plastics Corporation Conveyor belt
US7195040B2 (en) 2005-02-18 2007-03-27 Weavexx Corporation Papermaker's forming fabric with machine direction stitching yarns that form machine side knuckles
DE102005029573A1 (en) * 2005-06-25 2007-01-04 Voith Patent Gmbh Papermaking fabric
US7484538B2 (en) 2005-09-22 2009-02-03 Weavexx Corporation Papermaker's triple layer forming fabric with non-uniform top CMD floats
US7219701B2 (en) 2005-09-27 2007-05-22 Weavexx Corporation Papermaker's forming fabric with machine direction stitching yarns that form machine side knuckles
DE102005055785A1 (en) * 2005-11-21 2007-05-24 Voith Patent Gmbh papermaker
DE102005060301A1 (en) * 2005-12-16 2007-06-21 Voith Patent Gmbh Paper machine clothing
DE102005060299A1 (en) * 2005-12-16 2007-06-21 Voith Patent Gmbh papermaker
US7360560B2 (en) * 2006-01-31 2008-04-22 Astenjohnson, Inc. Single layer papermakers fabric
US7275566B2 (en) 2006-02-27 2007-10-02 Weavexx Corporation Warped stitched papermaker's forming fabric with fewer effective top MD yarns than bottom MD yarns
US7580229B2 (en) 2006-04-27 2009-08-25 Hitachi Global Storage Technologies Netherlands B.V. Current-perpendicular-to-the-plane (CPP) magnetoresistive sensor with antiparallel-free layer structure and low current-induced noise
US7617846B2 (en) * 2006-07-25 2009-11-17 Albany International Corp. Industrial fabric, and method of making thereof
DE102006061114A1 (en) * 2006-12-22 2008-06-26 Voith Patent Gmbh Fabric tape for a machine for producing web material and method for producing such a fabric tape
US7487805B2 (en) 2007-01-31 2009-02-10 Weavexx Corporation Papermaker's forming fabric with cross-direction yarn stitching and ratio of top machined direction yarns to bottom machine direction yarns of less than 1
US7624766B2 (en) * 2007-03-16 2009-12-01 Weavexx Corporation Warped stitched papermaker's forming fabric
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
CA2748789A1 (en) * 2011-08-15 2013-02-15 Derek Chaplin Embossing fabric including warp yarn sets
US8808506B2 (en) * 2012-02-13 2014-08-19 Voith Patent Gmbh Structured fabric for use in a papermaking machine and the fibrous web produced thereon
EP2631360B1 (en) * 2012-02-24 2014-05-14 Heimbach GmbH & Co. KG Fabric for forming a paper web having an embossed surface
CA2773501A1 (en) * 2012-04-02 2013-10-02 Derek Chaplin Single layer through-air dryer fabrics
CN104704167B (en) * 2012-07-27 2016-12-07 福伊特专利公司 dryer fabric
CN104818642B (en) * 2015-05-22 2016-08-17 安平县鑫鹏网带有限公司 A kind of technical fabric
DE102016200230A1 (en) * 2016-01-12 2017-08-17 Voith Patent Gmbh dryer
WO2018222370A2 (en) 2017-05-30 2018-12-06 Astenjohnson, Inc. High stability stacked warp yarn dryer fabric with long warp floats
DE102017007127A1 (en) * 2017-07-31 2019-01-31 Gkd - Gebr. Kufferath Ag Filter fabric and use of a filter fabric
US20240191431A1 (en) * 2022-12-07 2024-06-13 Voith Patent Gmbh Structured fabric with discrete elements

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3167281A (en) * 1962-06-13 1965-01-26 Cheney Bigelow Wire Works Inc Fourdrinier wire cloth
EP0044053A1 (en) * 1980-07-11 1982-01-20 Huyck Corporation Double layer endless papermaking fabric
US4636426A (en) * 1985-01-04 1987-01-13 Huyck Corporation Papermaker's fabric with yarns having multiple parallel monofilament strands
EP0232708A1 (en) * 1986-01-08 1987-08-19 Huyck Corporation Sixteen harness dual layer weave
EP0325167A1 (en) * 1988-01-15 1989-07-26 Hermann Wangner GmbH & Co. KG Double-layer screen for the forming section of a paper machine

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE454092C (en) * 1927-12-29 H G Waldhelm Filztuchfabrik Woven dewatering felt for paper machines
BE530871A (en) *
DE680111C (en) * 1934-06-22 1939-08-22 Eastwood Nealley Corp Screen, especially for paper machines
US2088447A (en) * 1936-03-23 1937-07-27 Encor Corp Woven wire belt for paper making machines
US2168928A (en) * 1937-07-13 1939-08-08 Lawrence Duck Company Single ply asbestos faced drier felt
US2180054A (en) * 1937-08-23 1939-11-14 Hindle Thomas Paper maker's drier felt
US2172430A (en) * 1937-10-14 1939-09-12 Lawrence Duck Company Single ply drier felt with asbestos facing
US2269869A (en) * 1940-07-31 1942-01-13 Eastwood Nealley Corp Woven wire belt for papermaking machines
DE1267960B (en) * 1960-05-18 1968-05-09 Appleton Wire Works Corp Paper machine screen
DE2847327C2 (en) * 1978-05-17 1984-02-23 JWI Ltd., Montreal, Quebec Drying fabrics for paper machines
DE2907488C2 (en) * 1979-02-26 1982-07-01 Dürener Metalltuch Schoeller, Hoesch & Co, 5160 Düren Paper machine fourdrinier
DE3146385C2 (en) * 1981-11-23 1985-10-31 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Double-layer fabric as a covering for paper machines
SE435739B (en) * 1983-02-23 1984-10-15 Nordiskafilt Ab DOUBLE TEXTILE TYPE FORMATION WIRES
DE3329740C2 (en) * 1983-08-17 1986-07-03 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Two- or multi-layer fabric as a covering for the sheet forming part of a paper machine
US4654052A (en) * 1985-06-24 1987-03-31 Daryl Sharp Variable molecular separator
CA1277209C (en) * 1986-11-28 1990-12-04 Dale B. Johnson Composite forming fabric
DE3923938A1 (en) * 1989-07-19 1991-01-31 Oberdorfer Fa F FORMING FABRICS FOR THE WET SECTION OF A PAPER MACHINE
US4949993A (en) * 1989-07-31 1990-08-21 Laguna Tectrix, Inc. Exercise apparatus having high durability mechanism for user energy transmission
US5025839A (en) * 1990-03-29 1991-06-25 Asten Group, Inc. Two-ply papermakers forming fabric with zig-zagging MD yarns
US5117865A (en) * 1990-06-06 1992-06-02 Asten Group, Inc. Papermakers fabric with flat high aspect ratio yarns
US5092373A (en) * 1990-06-06 1992-03-03 Asten Group, Inc. Papermakers fabric with orthogonal machine direction yarn seaming loops
DK0612882T3 (en) * 1990-06-06 1999-06-28 Asten S C V Textile for paper making and with flat yarns in the longitudinal direction of the machine
US5116478A (en) * 1990-11-05 1992-05-26 Nippon Filcon Co., Ltd. Extendable and heat shrinkable polyester mono-filament for endless fabric

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3167281A (en) * 1962-06-13 1965-01-26 Cheney Bigelow Wire Works Inc Fourdrinier wire cloth
EP0044053A1 (en) * 1980-07-11 1982-01-20 Huyck Corporation Double layer endless papermaking fabric
US4636426A (en) * 1985-01-04 1987-01-13 Huyck Corporation Papermaker's fabric with yarns having multiple parallel monofilament strands
EP0232708A1 (en) * 1986-01-08 1987-08-19 Huyck Corporation Sixteen harness dual layer weave
EP0325167A1 (en) * 1988-01-15 1989-07-26 Hermann Wangner GmbH & Co. KG Double-layer screen for the forming section of a paper machine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0837179A2 (en) * 1996-10-11 1998-04-22 Albany International Corp. Papermaker's fabric having paired identical machine-direction yarns weaving as one
EP0837179A3 (en) * 1996-10-11 1998-08-05 Albany International Corp. Papermaker's fabric having paired identical machine-direction yarns weaving as one
CN1048770C (en) * 1996-10-11 2000-01-26 阿尔巴尼国际公司 Papermaker's fabric having paired identical machine-direction yarns weaving as one
EP0851057A2 (en) * 1996-12-02 1998-07-01 Albany International Corp. Papermaker's fabric having paired different machine-direction yarns weaving as one
EP0851057A3 (en) * 1996-12-02 1998-08-19 Albany International Corp. Papermaker's fabric having paired different machine-direction yarns weaving as one
CN1046768C (en) * 1996-12-02 1999-11-24 阿尔巴尼国际公司 Papermaker's fabric having paired different machine-direction yarns weaving as one
DE19923088C1 (en) * 1999-05-20 2000-10-12 Heimbach Gmbh Thomas Josef Woven blanket for drying section of papermaking machine has paired longitudinal filaments pulled out into long and short loops at end sides for smooth surface on paper side when locked together by inserted wire
US6332480B1 (en) 1999-05-20 2001-12-25 Thomas Josef Heimbach Gesellschaft Mit Beschrankter Haftung & Co. Paper machine clothing having loop-forming longitudinal threads, at its ends

Also Published As

Publication number Publication date
CA2113985C (en) 2005-07-26
FI940377A0 (en) 1994-01-26
ATE164648T1 (en) 1998-04-15
CA2113985A1 (en) 1994-07-27
US5465764A (en) 1995-11-14
FI940377A (en) 1994-07-27
EP0609664B1 (en) 1998-04-01
DE4302031C1 (en) 1993-12-16
DE59405551D1 (en) 1998-05-07
FI96885C (en) 1996-09-10
NO940262L (en) 1994-07-27
FI96885B (en) 1996-05-31
NO940262D0 (en) 1994-01-25

Similar Documents

Publication Publication Date Title
DE4302031C1 (en) Fourdrinier for paper mfg. machine for large contact surface area - comprises oven plastics filaments with gp. in sub-gps. shrunk for longitudinal filaments side by side, for flexibility
EP0164434B1 (en) Papermachine cloth
EP0264001B1 (en) Double layer fabric for a paper making machine having a coarse wear side structure and a fine sheet surface structure
DE60318713T2 (en) FORMING LOOK IN THE FORM OF A COMPOSITE TISSUE WITH TRIPLE CHAIN
DE2540490B2 (en) Screen for paper machines
EP2922995B1 (en) Paper machine wire having floats of different length on the machine side
DE20122178U1 (en) Compound woven material, for the fourdrinier of a papermaking machine, has upper and lower warp layers with a structured weaving pattern with paired wefts at the upper side forming intermediate filament bridges with the lower layer
EP1054097B1 (en) Papermaking fabric, in particular a dryer cloth
DE2747160A1 (en) PAPER MACHINE TOWEL
EP0079431B2 (en) Single-layer paper-making fabric
DE2722023A1 (en) GROOVED OR UN-GROOVED ROLLER COVERING IN A PAPER MACHINE
DE2263476B2 (en) Fabrics for paper machine screens
DE10253491B3 (en) Paper machine sieve, consists of at least one single fabric for the single paper side, binding fibres and a single fabric for the running side
EP2067895B1 (en) Forming fabric for use in a paper making machine
EP0195835B1 (en) Endless screen cloth for paper machines or the like
DE2455185A1 (en) FABRIC FOR THE MAKING OF PAPER
DE102011054163B3 (en) papermaker
EP2510151B1 (en) Fabric band for a machine for producing web material, in particular paper or carton
EP1452639A1 (en) Paper machine clothing
DE3044762C2 (en) Papermaker's fabric
EP2004903B1 (en) Upper side, in particular paper side, for a paper machine forming fabric and paper machine forming fabric
DE112015001650T5 (en) Paper machine clothing fabric
DE102006008812A1 (en) Fabric tape for web material e.g. paper, manufacturing machine, has web material-sided fabric layer and machine-sided fabric layer, where machine-sided fabric layer is woven with irregular sateen interlace
EP3366835B1 (en) Drying fabric, dryer section of a paper machine equipped with same and use of the drying fabric in this dryer section
DE3924890A1 (en) LID SET FOR A CARD

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: A1

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

17P Request for examination filed

Effective date: 19940721

17Q First examination report despatched

Effective date: 19951009

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19980401

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19980401

REF Corresponds to:

Ref document number: 164648

Country of ref document: AT

Date of ref document: 19980415

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59405551

Country of ref document: DE

Date of ref document: 19980507

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19980515

PLAV Examination of admissibility of opposition

Free format text: ORIGINAL CODE: EPIDOS OPEX

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAV Examination of admissibility of opposition

Free format text: ORIGINAL CODE: EPIDOS OPEX

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: ASTEN INC.

Effective date: 19981229

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBL Opposition procedure terminated

Free format text: ORIGINAL CODE: EPIDOS OPPC

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: 19991121

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: SE

Payment date: 20110121

Year of fee payment: 18

Ref country code: AT

Payment date: 20110120

Year of fee payment: 18

Ref country code: CH

Payment date: 20110125

Year of fee payment: 18

Ref country code: FR

Payment date: 20110201

Year of fee payment: 18

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

Ref country code: GB

Payment date: 20110121

Year of fee payment: 18

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20120112

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20120928

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

Ref country code: CH

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

Effective date: 20120131

Ref country code: LI

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

Effective date: 20120131

Ref country code: SE

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

Effective date: 20120113

Ref country code: GB

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

Effective date: 20120112

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 164648

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120112

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

Ref country code: FR

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

Effective date: 20120131

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: 20120112

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

Ref country code: DE

Payment date: 20121026

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59405551

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59405551

Country of ref document: DE

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

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20140114