EP0266786B1 - Tissu en hélices combinées comprenant des hélices doubles - Google Patents

Tissu en hélices combinées comprenant des hélices doubles Download PDF

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Publication number
EP0266786B1
EP0266786B1 EP87116401A EP87116401A EP0266786B1 EP 0266786 B1 EP0266786 B1 EP 0266786B1 EP 87116401 A EP87116401 A EP 87116401A EP 87116401 A EP87116401 A EP 87116401A EP 0266786 B1 EP0266786 B1 EP 0266786B1
Authority
EP
European Patent Office
Prior art keywords
component
spiral
link belt
spiral link
helices
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.)
Expired - Lifetime
Application number
EP87116401A
Other languages
German (de)
English (en)
Other versions
EP0266786A2 (fr
EP0266786A3 (en
Inventor
Johannes Lefferts
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.)
Siteg Siebtechnik GmbH
Original Assignee
Siteg Siebtechnik 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
Application filed by Siteg Siebtechnik GmbH filed Critical Siteg Siebtechnik GmbH
Priority to AT87116401T priority Critical patent/ATE66261T1/de
Publication of EP0266786A2 publication Critical patent/EP0266786A2/fr
Publication of EP0266786A3 publication Critical patent/EP0266786A3/de
Application granted granted Critical
Publication of EP0266786B1 publication Critical patent/EP0266786B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0072—Link belts
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249922—Embodying intertwined or helical component[s]

Definitions

  • the invention relates to a spiral link belt made of a plurality of intermeshing plastic spirals, which are connected to one another by inserted plug wires, at least part of the spirals consisting of two components.
  • Spiral link belts are known from DE-A-29 38 221. Only certain plastics can be used to produce the spirals, namely those that can be spiralized, e.g. Polyester. The production of spirals from polyamide already encounters considerable difficulties, since it is only possible with great effort to manufacture the spirals in such a way that the winding legs lie in one plane. Polyamide spirals are usually twisted. Spirals cannot be made from polyacrylic, and this material would be particularly suitable for spiral link belts used in the dryer section of paper machines due to its high hydrolysis resistance.
  • Spiral link belts are known from EP-A-0 018 200 and EP-A-0 168 554, in which at least some of the spirals consist of two components, in such a way that the spirals are designed as so-called double spirals.
  • Double spirals can be produced, for example, in such a way that two monofilaments, for example a polyester monofilament and a polyamide monofilament, are wound side by side on a mandrel.
  • Double spirals therefore consist of two spiral elements, each of which is itself a spiral.
  • the surface of such a spiral link belt is half of each of the two Components formed. The prerequisite for this is that both spiral components consist of heat-fixable material. The use of the material properties of special plastics is therefore only possible to a limited extent.
  • the invention has for its object to provide a spiral link belt that has a wider range of applications and allows a greater variation in properties.
  • the filament material of the at least part of the spirals consists over an entire length of the at least two components, the spirals being wound such that the first component on the inside of the spiral and the second component on the outside of the Spiral lies.
  • Component is on the inside of the spiral and the second component is on the outside of the spiral.
  • each spiral consists of two components, of which the first component lies on the inside of the spiral and the second component on the outside of the spiral.
  • the first component lying on the inside of the spiral generally consists of spiralable material, in particular polyester.
  • a particularly abrasion-resistant material e.g. Polyamide.
  • the second component lying on the outside of the spiral preferably consists of polyether ether ketone, since this material is highly resistant to hydrolysis.
  • An acrylic multifilament yarn can also be used as the hydrolysis-resistant second component, e.g. from Dralon-T (trademark of Bayer AG).
  • An embodiment is also advantageous in which the second component lying on the outside consists of polyester and the first component lying on the inside consists of polyether ether ketone.
  • Polyether ether ketone has a higher abrasion resistance than polyester. Nevertheless, this embodiment has the advantage that the hydrolysis-resistant material (polyether ether ketone) is not exposed to abrasion and is therefore retained in full cross-section until the end of the spiral link belt. This embodiment is therefore particularly expedient in cases where the life of the spiral link belt is limited more by hydrolysis than by abrasion.
  • the first component can be a PEEK monofilament with a diameter of 0.2 mm, which lies in a groove of the second component, which is a polyester monofilament with a diameter of 0.6 mm.
  • the first component (PEEK) has a weight fraction of approximately 7.5% by weight of the entire spiral link belt and a fraction of approximately 10% by weight of the spirals themselves. During the production of these spirals, both components are wound together on a
  • the interface between the two components can be smooth. There is normally no danger that the two components will move against one another, since the spirals mesh with one another in a zipper-like manner, so that the two components each lie on the winding arches closely between the winding arcs of the adjacent spiral and are fixed there in their mutual position. However, there is also the possibility of making one component convex and the other concave at the interface, so that there is a certain positive fit between the two components. If the second component has a very small diameter compared to the overall spiral, it is preferably embedded in a groove on the outside of the first component.
  • the one component When the spiral link belt is heat set, the one component, generally the second component lying on the outside, can also be deformed. If the second component lying on the outside is, for example, a relatively thick multifilament yarn, the spiral link belt can also be pressed over a large area during the heat setting. As a result, the second component spreads, thereby increasing the contact area.
  • the first component generally does not have a round cross-sectional profile, but e.g. is square or has a groove on the outside, care must be taken that the spiral wire is not rotated about its longitudinal axis when it is wound on the mandrel, so that it maintains its orientation. This is achieved in that the wire of the first component is guided through a guide adapted to the cross-sectional profile of this wire before it is wound onto the mandrel.
  • the second and any other components are wound onto the mandrel together with the first component. So that the yarn or the wire of the second component is wound exactly over the first component, the second component is also passed through a guide immediately before winding, which also corresponds to the profile of the second component if it does not have a round cross section.
  • the second component can also be added subsequently onto the spiral consisting of the first component.
  • the wire of the spirals continuously consists of at least two components over its entire length after winding.
  • Fig. 1 shows a spiral link belt in section in the longitudinal direction.
  • Each spiral 1 consists of a plurality of elongated windings with winding arcs 7 and winding legs 8.
  • the spirals 1 mesh with one another, so that the winding arches 7 of a spiral engage in a zipper-like manner with the winding arches 7 of the two adjacent spirals 1.
  • the interlocking winding arcs 7 overlap so far that they enclose a channel into which a plug wire 6 is inserted.
  • the plug wire 6 firmly connects the spirals 1 to one another.
  • the winding legs 8 form the top and the bottom of the spiral link belt.
  • each spiral 1 is divided and consists of a first, inner component 2 and a second, outer component 3, which is wound over the first component 2.
  • Both components have a flat, almost rectangular cross section. However, one or both components can also be a semicircular or have dome-shaped cross section, as shown in Fig. 2.
  • the inner component 2 is a polyester monofilament
  • the outer component 3 is a polyamide monofilament and as a result gives the spiral link belt a higher overall wear resistance.
  • the interface 4 between the two components 2, 3 can be curved in cross section, so that there is a certain positive fit between the two components 2, 3, see . Fig. 3.
  • the first, inner component 2 is a polyester monofilament with an overall round cross section of 0.6 mm in diameter and with a groove 5 which is open to the outside and has a depth of 0.2 mm.
  • a polyether ether ketone monofilament with a diameter of 0.2 mm is inserted into the channel 5.
  • polyether ether ketone has a very high resistance, which is considerably greater than e.g. which is of polyester. Because of the high material costs, polyether ether ketone has not been used to any significant extent for paper machine clothing.
  • the second component 3 made of polyether ether ketone in the exemplary embodiment of FIG. 4 has a much smaller diameter than the spiral 1 as a whole, the costs remain within a framework that is acceptable for many cases. Even if the first component 2 made of polyester is completely destroyed, the second component 3 made of a 0.2 mm thick polyetheretherketone monofilament is strong enough to hold the spiral link band together. This results in significantly longer terms.
  • a multifilament yarn or a spun fiber yarn can also be inserted into the channel 5 as the second component 3.
  • This yarn does not have to be heat-fixable, since the first component 2, consisting of polyester, acts as a support or holder for the multifilament or spun yarn.
  • the second component can therefore e.g. consist of an acrylic multi-filament yarn as it is sold under the trademark Dralon-T.
  • This acrylic multifilament yarn has a much higher resistance to hydrolysis than polyester.
  • Acrylic multifilament yarns alone cannot be formed into spirals because they cannot be heat set to a specific shape.
  • polyester and acrylic are therefore used in the embodiment of FIG. 4.
  • the polyester monofilament gives the required stability, while the acrylic multifilament yarn, which is located on the outside of the spiral 1, provides the resistance to hydrolysis.
  • the outside of the spirals is particularly vulnerable to hydrolysis.
  • the thickness of the acrylic multifilament yarn forming the second component 3 can be chosen so that it either fills the channel 5 of the first component 2 exactly or protrudes slightly beyond it. This gives the spiral link tape a soft surface, which leads to improved marking properties. This also increases the contact pressure of the paper compared to the heated drying cylinders of the paper machine.
  • the first, inner component is a polyester monofilament with an approximately square cross section of 0.6 ⁇ 0.6 mm.
  • the outwardly facing surface of the first component 2 is concave, so that a recess 9 with a maximum depth of 0.2 mm.
  • a multifilament yarn, a spun fiber yarn or a monofilament thread (for example 6 ⁇ 0.2 mm) can be placed in the recess 9 as the second component 3.
  • the second component 3 expediently consists of a thermoplastic, although this is not absolutely necessary.
  • the thickness of the inlay yarn of the second component 3 is preferably 0.6 to 0.7 mm, that is to say somewhat larger than the dimension of the approximately square component 2.
  • the insert yarn 3 lies on the polyester wire 2 and thereby significantly increases the overall dimension of the spiral 1.
  • a spiral link belt made of such a spiral 1 can be pressed during the heat setting, so that the inlay yarn 3 is deformed and flattened in cross section under the influence of the temperature and the pressing pressure, see FIG. Fig. 6.
  • the transverse dimension of the second component 3, i.e. of the inlay yarn increases, and it is possible to flatten the inlay yarn so much that the sections of the inlay yarn 3, which belong to adjacent winding legs 8 of a spiral 1, touch and form a closed surface of the spiral link belt. Thanks to a closed, soft surface, extensive freedom from marking is achieved and the contact area of the paper with the drying cylinders is increased. At the same time, the air permeability of the spiral link belt is reduced.
  • the second component lying on the outside of the spirals can also be a metal wire or a reflective material.
  • a metal wire can e.g. the static electricity can be reduced or the warming up of the paper can be improved.

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  • Paper (AREA)
  • Ropes Or Cables (AREA)
  • Decoration Of Textiles (AREA)
  • Reinforcement Elements For Buildings (AREA)

Claims (8)

  1. Tissu en hélices combinées avec un grand nombre d'hélices en matière plastique (1), formées de branches d'enroulement plates (8) et de coudes d'enroulement (7), dans lequel les coudes d'enroulement (7) d'une hélice (1) engrènent à la manière d'une fermeture éclair avec les coudes d'enroulement (7) des hélices voisines (1) et avec les fils insérés (6), qui sont insérés dans les canaux formés par les coudes d'enroulement (7) de chaque groupe de deux hélices (1), qui engrènent les uns avec les autres, dans lequel au moins une partie des hélices (1) est formée de deux constituants, caractérisé en ce que le matériau du filament d'au moins une partie des hélices (1) est formé sur toute sa longueur d'au moins deux constituants dans lequel les hélices sont enroulées de façon à ce que le premier constituant (2) se trouve sur la face intérieure des hélices (1) et le deuxième constituant (3) sur la face extérieure des hélices (1).
  2. Tissu en hélices combinées selon la revendication 1, caractérisé en ce que l'hélice (1) est formée de deux constituants(2, 3) et que ceux-ci sont situés l'un à côté de l'autre le long d'une surface limite 4.
  3. Tissu en hélices combinées selon la revendication 2, caractérisé en ce que la surface limite (4) a une forme concave ou convexe.
  4. Tissu en hélices combinées selon l'une des revendications 1 à 3, caractérisé en ce que le deuxième constituant (3) situé sur la face extérieure, est encastré dans une rainure (5) du premier constituant (2).
  5. Tissu en hélices combinées selon l'une des revendications 1 à 4, caractérisé en ce que le premier constituant (2) est formé de polyester et que le deuxième constituant (3) est formé de polyétheréthercétone.
  6. Tissu en hélices combinées selon l'une des revendications 1 à 4, caractérisé en ce que le premier constituant (2) est formé de polyester et que le deuxième constituant (3) est un fil à multifilament acrylique ou un fil de fibres de filage.
  7. Tissu en hélices combinées selon l'une des revendications 1 à 3, caractérisé en ce que le deuxième constituant (2) a une section plate avec une dimension transversale supérieure à celle du premier constituant (2).
  8. Tissu en hélices combinées selon d'une des revendications 1 à 3, caractérisé en ce que le premier constituant (2), situé sur la face intérieure, est un monofilament de polyétheréthercétone, qui est encastré dans une rainure du deuxième constituant (3) située sur la face extérieure et qui est un monofilament de polyester.
EP87116401A 1986-11-07 1987-11-06 Tissu en hélices combinées comprenant des hélices doubles Expired - Lifetime EP0266786B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87116401T ATE66261T1 (de) 1986-11-07 1987-11-06 Spiralgliederband mit geteilten spiralen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3638036 1986-11-07
DE19863638036 DE3638036A1 (de) 1986-11-07 1986-11-07 Spiralgliederband mit geteilten spiralen

Publications (3)

Publication Number Publication Date
EP0266786A2 EP0266786A2 (fr) 1988-05-11
EP0266786A3 EP0266786A3 (en) 1988-07-27
EP0266786B1 true EP0266786B1 (fr) 1991-08-14

Family

ID=6313427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87116401A Expired - Lifetime EP0266786B1 (fr) 1986-11-07 1987-11-06 Tissu en hélices combinées comprenant des hélices doubles

Country Status (15)

Country Link
US (1) US4796749A (fr)
EP (1) EP0266786B1 (fr)
JP (1) JPS63126989A (fr)
AR (1) AR243248A1 (fr)
AT (1) ATE66261T1 (fr)
AU (1) AU587349B2 (fr)
BR (1) BR8705972A (fr)
CA (1) CA1279503C (fr)
DE (2) DE3638036A1 (fr)
ES (1) ES2025127B3 (fr)
FI (1) FI87377C (fr)
GR (1) GR3002569T3 (fr)
NZ (1) NZ222449A (fr)
PT (1) PT86084B (fr)
ZA (1) ZA878310B (fr)

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Publication number Priority date Publication date Assignee Title
JPH01207464A (ja) * 1988-02-09 1989-08-21 Kanto Yakin Kogyo Kk 高温下搬送手段用構成部品
US5296276A (en) * 1990-12-28 1994-03-22 Okura Industrial Co., Ltd. Seamless endless belt
DE4218884C2 (de) * 1992-06-09 1995-09-14 Siegfried Herrmann Förderband aus Drahtwendeln und Verfahren zu dessen Herstellung
GB9420216D0 (en) * 1994-10-06 1994-11-23 Scapa Group Plc Dewatering process
GB2294948B (en) * 1994-10-06 1998-02-25 Scapa Group Plc Dewatering process
DE19534486C1 (de) * 1995-09-16 1997-03-27 Heimbach Gmbh Thomas Josef Gliederband insbesondere für Papiermaschinen
US6736714B2 (en) * 1997-07-30 2004-05-18 Praxair S.T. Technology, Inc. Polishing silicon wafers
US6514301B1 (en) 1998-06-02 2003-02-04 Peripheral Products Inc. Foam semiconductor polishing belts and pads
US7718102B2 (en) * 1998-06-02 2010-05-18 Praxair S.T. Technology, Inc. Froth and method of producing froth
CN1175141C (zh) * 1999-09-21 2004-11-10 阿斯坦私人有限公司 造纸机的干燥网
US6666328B2 (en) * 2001-08-07 2003-12-23 Stapell/Guider Corporation Long wear conveyor assembly
US6722765B2 (en) * 2002-03-11 2004-04-20 Hewlett-Packard Development Company, L.P. Non-reactive ink vehicle formulation
GB0224561D0 (en) * 2002-10-23 2002-11-27 Voith Fabrics Heidenheim Gmbh Conveyor belt for use in the manufacture of fibre glass mats
US20040127127A1 (en) * 2002-12-30 2004-07-01 Dana Eagles Bicomponent monofilament
WO2004094275A1 (fr) * 2003-04-17 2004-11-04 Cambridge International, Inc. Bande transporteuse spirale tissee en plastique
ATE486995T1 (de) * 2003-08-13 2010-11-15 Heimbach Gmbh & Co Papiermaschinenbespannung
GB2498922A (en) * 2011-12-14 2013-08-07 Madison Filter 981 Ltd Antistatic link belt
WO2024102246A1 (fr) * 2022-11-09 2024-05-16 Laitram, L.L.C. Bande transporteuse à treillis métallique hélicoïdal

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Publication number Priority date Publication date Assignee Title
NZ193441A (en) * 1979-04-21 1983-11-30 Scapa Porritt Ltd Link conveyor formed from plurality of helical coils
AU531985B2 (en) * 1979-04-23 1983-09-15 Textiel Techniek Haaksbergen B.V. Sieve belt for papermaking machine
NL7903176A (nl) * 1979-04-23 1980-10-27 Johannes Lefferts Werkwijze voor het vervaardigen van een zeefband, bij- voorbeeld een zeefband voor een papiermachine.
DE2921491A1 (de) * 1979-05-26 1980-12-04 T T Haaksbergen B V I O Verfahren zur herstellung eines gliederbandes
DE3039873C2 (de) * 1980-10-22 1986-02-06 Siteg Siebtechnik GmbH, 4422 Ahaus Verfahren zum Herstellen eines mit Füllmaterial versehenen Siebbandes
FR2494318B1 (fr) * 1980-11-14 1986-10-10 Feutres Papeteries Tissus Indl Bande constituee de spirales
US4395308A (en) * 1981-06-12 1983-07-26 Scapa Dyers Inc. Spiral fabric papermakers felt and method of making
DE3221255C2 (de) * 1982-06-04 1986-07-24 Siteg Siebtechnik GmbH, 4422 Ahaus Spiralband aus Grundspiralen und Hilfsspiralen
DE3224760A1 (de) * 1982-07-02 1984-01-05 Thomas Josef Heimbach GmbH & Co, 5160 Düren Band zum einsatz in nasspressen von papiermaschinen
DE3228033A1 (de) * 1982-07-27 1984-02-02 Siteg Siebtechnik GmbH, 4422 Ahaus Spirale grosser laenge zur herstellung eines spiralbandes und verfahren und vorrichtung zum einbringen von fuellmaterial in diese spiralen
DE3304459A1 (de) * 1983-02-09 1984-08-16 Siteg Siebtechnik GmbH, 4422 Ahaus Doppelspirale, verfahren zu deren herstellung, verwendung der doppelspirale zur herstellung eines siebbandes und aus diesen doppelspiralen hergestelltes spiralband
DE3416234A1 (de) * 1983-06-13 1984-12-13 Albany International Corp., Menands, N.Y. Papiermaschinenbespannung
DE3411112A1 (de) * 1984-03-26 1985-10-03 Fa. F. Oberdorfer, 7920 Heidenheim Spiralsiebband
US4500590A (en) * 1984-06-25 1985-02-19 Wangner Systems Corporation Dryer fabric having reduced permeability in the area of the pintle joint
CA1221614A (fr) * 1984-08-10 1987-05-12 Asten, Inc. Toiles lamifiees a tissage spiral et face lisse pour la fabrication du papier
DE3501981A1 (de) * 1985-01-22 1986-07-24 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Spiralgliederband mit geschuetzten kanten
US4654122A (en) * 1985-03-26 1987-03-31 Asten Group, Inc. Endless wire belt for paper machines or the like
DE3511166A1 (de) * 1985-03-27 1986-10-09 Siteg Siebtechnik GmbH, 4422 Ahaus Spiralgliederband mit verminderter luftdurchlaessigkeit und verfahren zu dessen herstellung
DE3534264A1 (de) * 1985-09-26 1987-04-02 Siteg Siebtech Gmbh Spiralgliederband mit fuellspiralen, die um den steckdraht gewickelt sind

Also Published As

Publication number Publication date
CA1279503C (fr) 1991-01-29
AU587349B2 (en) 1989-08-10
AR243248A1 (es) 1993-07-30
AU8063587A (en) 1988-05-12
DE3772155D1 (de) 1991-09-19
ES2025127B3 (es) 1992-03-16
ATE66261T1 (de) 1991-08-15
FI87377B (fi) 1992-09-15
GR3002569T3 (en) 1993-01-25
US4796749A (en) 1989-01-10
BR8705972A (pt) 1988-06-14
ZA878310B (en) 1988-05-02
PT86084A (pt) 1988-12-15
NZ222449A (en) 1989-03-29
FI87377C (fi) 1992-12-28
DE3638036A1 (de) 1988-05-11
EP0266786A2 (fr) 1988-05-11
FI874837A (fi) 1988-05-08
JPS63126989A (ja) 1988-05-30
FI874837A0 (fi) 1987-11-03
EP0266786A3 (en) 1988-07-27
PT86084B (pt) 1994-09-30

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