EP0094638A2 - Bande à chaînons et son procédé de fabrication - Google Patents

Bande à chaînons et son procédé de fabrication Download PDF

Info

Publication number
EP0094638A2
EP0094638A2 EP83104732A EP83104732A EP0094638A2 EP 0094638 A2 EP0094638 A2 EP 0094638A2 EP 83104732 A EP83104732 A EP 83104732A EP 83104732 A EP83104732 A EP 83104732A EP 0094638 A2 EP0094638 A2 EP 0094638A2
Authority
EP
European Patent Office
Prior art keywords
spirals
spiral
polyester
consist
polyamide
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.)
Ceased
Application number
EP83104732A
Other languages
German (de)
English (en)
Other versions
EP0094638A3 (fr
Inventor
Georg Dipl.-Ing. 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
Application filed by Herman Wangner GmbH and Co KG filed Critical Herman Wangner GmbH and Co KG
Publication of EP0094638A2 publication Critical patent/EP0094638A2/fr
Publication of EP0094638A3 publication Critical patent/EP0094638A3/fr
Ceased 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
    • D21F1/0072—Link belts

Definitions

  • the invention relates to a spiral band made of a plurality of spirals, the turns of which are joined together in a zipper-like manner and are secured by plug-in wires.
  • spiral tapes are known from DE-AS 24 19 751, DE-OS 29 38 221 and EU-AO 018 200.
  • the spirals - these are coils - are usually made of polyester-plastic monofilaments.
  • the spiral belts serve as transport and filter belts and have recently also been used in particular conventional dry felts in the dryer section of paper machines.
  • the application in papermaking has so far been limited to the dryer section because the requirements for marking properties, mechanical abrasion and resistance to compression are the least in this part of the paper machine.
  • the sheet formation of the paper web has already been completed in the dryer section and the paper web has been compressed to such an extent that it is no longer susceptible to marking.
  • the fineness of the spiral belt can be selected according to the type of paper and the construction of the dryer section. Air permeability is controlled by filling the cavities of the spirals with voluminous yarns.
  • the aim is to use particularly fine spiral screens in the sheet forming part of a paper machine.
  • the main advantage of the spiral tapes is that there is no seam and the spiral tapes can be delivered open and can only be made endless in the paper machine by inserting the last plug-in wire.
  • the spiral belts are particularly advantageous if there is not a conventional press with a practically linear press zone, but a press with an extended press nip zone, which is referred to as an "extended nip press".
  • the spiral belts are particularly advantageous here because of the free volume inside the spirals when they are used between the press roller and the dewatering felt.
  • An open "fabric press” made of spirals can often make the expensive grooved roller superfluous.
  • the invention has for its object to improve the abrasion resistance of a spiral tape without resorting to complex, multi-layer spiral systems.
  • spirals are made partly of polyamide or of another abrasion-resistant plastic material partly made of polyester and the plug wires are made of polyester.
  • spirals can consist of these two materials alternately or in any other order.
  • a further increase in the running time results from the fact that the spirals made of polyamide are made of thicker material than the spirals made of polyester.
  • the volume of abrasion can be increased further by the highest points of the spirals lying on one level on the paper side, while the polyamide spirals protrude accordingly on the running side.
  • the invention furthermore relates to the production of a spiral belt in the last-mentioned embodiment, in that the spiral belt is guided over a heated fixing roller or a heated, curved support table during heat setting under high longitudinal tension.
  • inventive spiral belt as S tützband in the press section of a paper machine it is of importance that the inventive spiral belt and has an improved pressure resistance because of largely pressure-resistant polyamide spirals both the required abrasion resistance.
  • the D jerk resistance of the spiral belt can be further increased by additional filler wires.
  • This F ülldrähte composed of monofilament polyester, polyamide or other plastic material.
  • the diameter of the ülldrähte F is equal to or greater than the diameter of the plug wires.
  • spiral tape is used in a so-called "extended nip press", it is provided on at least one side with a polyurethane layer, which has a smoothly ground surface, so that the pressure fluid is sealed off in the pressure area.
  • the open hinge side facing the paper web offers sufficient volume to absorb the squeezed water and to transport it out of the press zone.
  • the spiral tapes have been made exclusively from polyester monofilaments for reasons of stability.
  • polyamide is more resistant to abrasion than polyester
  • no spiral tapes made of polyamide have been used so far, because such spiral tapes cannot be expected to have sufficient longitudinal stability, ie they stretch too much.
  • a high elongation is to be expected in particular in the paper machine.
  • the width of the spiral belt would also change considerably. Depending on the water absorption, the change in width can be along the spiral band be different. Because of the high longitudinal tension exerted piralband in a paper machine to such S, such a fluctuation in width of the spiral belt in the formation of waves in the S would lead piralband which easily cause longitudinal folds and to make the spiral belt unusable.
  • the polyester spirals and the plug wires which are also made of polyester, have a stabilizing effect on the width of the spiral tape and give it sufficient transverse stability.
  • the offset of the plug-in wires also contributes to the transverse stability, which is formed during the heat-setting of the spiral belt as a result of the effect of the elevated temperature and the tension exerted on the sieve belt by the fact that the head bends of the spirals penetrate somewhat into the material of the plug-in wires, so that these become roughly wavy.
  • the finished spiral band there is a partly form-fitting and partly force-engaging engagement between the plug wires and the spirals.
  • adjacent spirals overlap each other to such an extent that they jointly delimit a transverse channel through which plug-in wires 3 are inserted, which secure the spirals.
  • the distances between the plug wires 3 are generally the same. In individual cases, however, the distances can also be different. Be used for the polyamide spirals 2 M onofile of greater diameter than polyester spirals for 1 so can marking problems arise because the distance between the individual windings then in the polyamide spirals 2 is smaller than that of the polyester spirals 1 This can be compensated in part by the fact that the polyester spirals 1 are shorter in the longitudinal direction of the spiral band and the distance between the corresponding plug wires 3 within a polyester spiral 1 is smaller than within a polyamide spiral 2.
  • the open area between two successive ones Windings of a polyester spiral 1 can thus be selected to be the same size as the open area between two successive windings of a polyamide spiral 2.
  • the diameter of the polyamide monofilament can be up to 30% larger than that of the polyester monofilament.
  • the larger material cross section of the polyamide spirals 2 increases the material volume available for abrasion and at the same time reduces the bottom differed in the elongation at break and the elongation in the longitudinal direction of the spiral band between the polyester spirals 1 and the polyamide spirals 2.
  • the greater material thickness of the polyamide spirals 2 largely removes the polyester spirals 1 from abrasion. This effect can be enhanced by the fact that the uppermost points of both types of spirals on the paper side lie in one plane and that the polyamide spirals 2 protrude further on the running side. If the top of the spirals lies on one level on the paper side, the spiral band is referred to as "monoplan". In this case, the polyamide spirals on the barrel side protrude by twice the diameter difference. 2 shows the protrusion of the polyamide spirals 2, the dimension a being smaller than the dimension b. The difference in the wire diameter is shown exaggeratedly large in FIGS. 1 and 2 for clarification.
  • the one-sided smoothing (monoplanarity) of the spiral belt can be achieved by heat-fixing it with the side that will later serve as the paper side, with a high longitudinal tension over a heated fixing roller 4 (FIG. 3) or a heated, curved support table.
  • FIG. 4 shows the spirals with a symmetrical arrangement before fixing in enlarged form
  • FIG. 5 shows the mutual displacement of the spirals after fixing.
  • a complete monoplanarity of the spiral band cannot be achieved when fixing alone. If necessary, the paper side must be smoothed further by sanding.
  • the X-direction is the running or longitudinal direction of the spiral belt, see F ig. 6.
  • the plug wires are hardly deformed in conventional spiral bands, because the forces acting during fixing lie exclusively in the X - Y plane, ie act in the X direction (Fig. 7) .
  • the spiral tape can be provided with a dirt-repellent coating.
  • the spiral belt is chemically cleaned to remove grease residues from the material surface.
  • the dirt-repellent substance for example, fluorocarbon resin, either alone or together with other applied chemicals and condensed at 16 0 ° C. Spiral tapes provided with such a dirt-repellent coating do not have to be cleaned as often, as a result of which the downtimes and the Be reduced R agreement cost.
  • the cored wires 5 run in the cavities of the spirals and their diameter is equal to or larger than that of the plug wires 3.
  • a spiral tape with spirals which alternately consist of polyamide and polyester in a ratio of 1: 1 and with polyester plug wires, is assembled in the usual way.
  • the polyester spirals consist of a longitudinally stable, i.e. low-stretch, polyester monofilament and have a diameter of 0.7 mm, the distance between the plug wires is even and is 5 mm.
  • the dimension of the spirals perpendicular to the plane of the spiral band is 2.5 mm, so the spirals have an oval cross-section.
  • the polyamide spirals consist of a monofilament with a diameter of 0.8 mm and are therefore approx. 15% thicker than the polyester monofilament. While the dimension of the polyamide spirals in the longitudinal direction is 5 mm and is therefore equal to the corresponding dimension of the polyester spirals, the dimension perpendicular to the plane of the spiral band is 2.65 mm.
  • the polyamide spirals are on the paper side (top) of the spiral tape 0.04 mm higher than the polyester spirals. On the running side (bottom), the polyamide spirals protrude approximately 0.11 mm beyond the polyester spirals.
  • the division of the spirals in the transverse direction of the spiral album that is about 6 turns / cm.
  • the plug wires consist of a polyester monofilament type that is easily deformable under pressure and heat and have a diameter of 0.9 mm.
  • the finished spiral belt weighs about 139 0 g / m2.
  • the spiral band is of the type known from DE-OS 29 38 221, i.e. the spirals have no tension, the spirals are made in such a way that the plastic monofilament has no torsion and the sieve belt is heat-set so that the spirals penetrate the material of the plug wires somewhat and give them a wave shape.

Landscapes

  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Package Frames And Binding Bands (AREA)
  • Paper (AREA)
  • Belt Conveyors (AREA)
EP83104732A 1982-05-14 1983-05-13 Bande à chaínons et son procédé de fabrication Ceased EP0094638A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3218295 1982-05-14
DE3218295 1982-05-14

Publications (2)

Publication Number Publication Date
EP0094638A2 true EP0094638A2 (fr) 1983-11-23
EP0094638A3 EP0094638A3 (fr) 1986-02-05

Family

ID=6163667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83104732A Ceased EP0094638A3 (fr) 1982-05-14 1983-05-13 Bande à chaínons et son procédé de fabrication

Country Status (2)

Country Link
EP (1) EP0094638A3 (fr)
ES (1) ES279978U (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3411112A1 (de) * 1984-03-26 1985-10-03 Fa. F. Oberdorfer, 7920 Heidenheim Spiralsiebband
GB2196927A (en) * 1986-11-08 1988-05-11 Edward W Andrew Ltd Conveyor belt or surface
EP0230228A3 (fr) * 1986-01-21 1989-07-26 Bayer Ag Procédé pour la fabrication d'une bande constituée de spirales et bande constituée de spirales obtenue selon ce procédé
EP1507039A1 (fr) * 2003-08-13 2005-02-16 Heimbach GmbH & Co. Toile pour machine à papier
JP2015020855A (ja) * 2013-07-18 2015-02-02 太陽金網株式会社 段差表面付きメッシュベルト
CN118065167A (zh) * 2022-11-24 2024-05-24 维美德技术有限公司 压榨毛布

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2255364A (en) * 1939-08-07 1941-09-09 Clarence E Pink Conveyer belt
DE2419751C3 (de) * 1974-04-24 1982-01-21 Kerber, geb. Poth, Hella, 6731 Weidenthal Drahtgliederband z.B. für Papiermaschinen
NZ193441A (en) * 1979-04-21 1983-11-30 Scapa Porritt Ltd Link conveyor formed from plurality of helical coils

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3411112A1 (de) * 1984-03-26 1985-10-03 Fa. F. Oberdorfer, 7920 Heidenheim Spiralsiebband
EP0168554A1 (fr) * 1984-03-26 1986-01-22 F. Oberdorfer GmbH & Co. KG Industriegewebe-Technik Tissu en hélices combinées
EP0230228A3 (fr) * 1986-01-21 1989-07-26 Bayer Ag Procédé pour la fabrication d'une bande constituée de spirales et bande constituée de spirales obtenue selon ce procédé
GB2196927A (en) * 1986-11-08 1988-05-11 Edward W Andrew Ltd Conveyor belt or surface
GB2196927B (en) * 1986-11-08 1990-09-05 Edward W Andrew Ltd Conveying non-conductive materials.
EP1507039A1 (fr) * 2003-08-13 2005-02-16 Heimbach GmbH & Co. Toile pour machine à papier
US7279074B2 (en) 2003-08-13 2007-10-09 Heimbach Gmbh & Co. Paper machine clothing
CN100513684C (zh) * 2003-08-13 2009-07-15 亨巴赫有限公司及两合公司 纸机织物
JP2015020855A (ja) * 2013-07-18 2015-02-02 太陽金網株式会社 段差表面付きメッシュベルト
CN118065167A (zh) * 2022-11-24 2024-05-24 维美德技术有限公司 压榨毛布

Also Published As

Publication number Publication date
EP0094638A3 (fr) 1986-02-05
ES279978U (es) 1985-06-01

Similar Documents

Publication Publication Date Title
EP0325167B1 (fr) Toile à deux couches pour la section de formation d'une machine à papier
EP0048962B1 (fr) Tamis double pour la section de transformation en feuille d'une machine à papier
EP0224276B1 (fr) Toile pour la partie humide d'une machine à papier
DE69526118T2 (de) Mehrschichtiges formgewebe
DE69129639T2 (de) Pressfilz und Verfahren zu dessen Herstellung
DE69203321T2 (de) Spiralkonstruktion eines Bandes für Langspaltpresse.
DE2540490B2 (de) Sieb für Papiermaschinen
DE69710807T2 (de) Papiermaschinegewebe mit geringer Luftdurchlässigkeit
DE69607708T2 (de) Spiralformiges Armierungsband für Pressbänder zum Einsatz in Langspaltpresse
DE68904141T2 (de) Nasspresse mit verlaengerter presszone.
DE69126545T2 (de) Papiermachergewebe mit flachen Längsfäden
DE3607613A1 (de) Saumverbindung zum endlosmachen von papiermaschinen-bespannungen
DE60123479T2 (de) Gerilltes band für langspaltpresse
EP3587664B1 (fr) Toile pour machines à papier ou pour machines de drainage de pâte à papier et utilisation d'une telle toile
DE69929767T2 (de) Multiaxiales Pressgewebe mit geformten Fäden
DE4137984C1 (fr)
DE3147115A1 (de) Spiralgliederband und verfahren zu dessen herstellung
EP1054097B1 (fr) Toile pour machine à papier, en particulier une toile de séchage
DE3914533A1 (de) Band fuer papiermaschinen
DE68911839T2 (de) Saumbildung für ein Papiermachergewebe.
WO2015018547A1 (fr) Toile de machine à papier dont le côté de passage comporte des fils transversaux de différentes longueurs de flotté
DE69822472T2 (de) Gewebenaht
EP0094638A2 (fr) Bande à chaînons et son procédé de fabrication
DE2455185A1 (de) Gewebe zur herstellung von papier
DE69313376T2 (de) Asymmetrisches Papiermachergewebe und ein solches Gewebe verwendende Vorrichtung zur Papierherstellung

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

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

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

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

17P Request for examination filed

Effective date: 19860804

17Q First examination report despatched

Effective date: 19871214

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

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19890126

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BOREL, GEORG DIPL.-ING.