EP0473969B1 - Band zum Einsatz in Papiermaschinen - Google Patents

Band zum Einsatz in Papiermaschinen Download PDF

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Publication number
EP0473969B1
EP0473969B1 EP91113448A EP91113448A EP0473969B1 EP 0473969 B1 EP0473969 B1 EP 0473969B1 EP 91113448 A EP91113448 A EP 91113448A EP 91113448 A EP91113448 A EP 91113448A EP 0473969 B1 EP0473969 B1 EP 0473969B1
Authority
EP
European Patent Office
Prior art keywords
layer
band
textile product
ribbon
fibre layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91113448A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0473969A1 (de
Inventor
Janssen Dr. Eberhard
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
Application filed by Thomas Josef Heimbach and Co GmbH filed Critical Thomas Josef Heimbach and Co GmbH
Publication of EP0473969A1 publication Critical patent/EP0473969A1/de
Application granted granted Critical
Publication of EP0473969B1 publication Critical patent/EP0473969B1/de
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
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • D21F3/0227—Belts or sleeves therefor

Definitions

  • the invention relates to a belt for use in paper machines, in particular in wet presses with an extended press nip, which has a flexible, liquid-impermeable belt layer which is smooth on the back and in the front of which a textile product is only partially embedded to form open cavities.
  • wet presses with an extended press nip so-called “shoe presses” have been developed in which the paper web is exposed to high press pressure over a longer distance and thus for a correspondingly longer time, so that it runs out of the wet press with a higher dry content.
  • tapes in particular are used which have a flexible, liquid-impermeable tape layer which is smooth on the back. With this smooth back, they run in the press nip over a pressure shoe that is hydraulically actuated and presses the belt in the direction of an opposite pressure roller.
  • the paper web to be dewatered is passed through between this pressure roller and the belt, the paper web being accompanied on at least one side by an additionally running wet felt which removes the squeezed out water.
  • the invention is therefore based on the object of forming a belt of the type mentioned in such a way that it is distinguished on the one hand by high flexibility and large cavity volume for water removal, but on the other hand an improved bond between the textile product and the belt layer is achieved.
  • the textile product has a carrier web and a fiber layer fastened thereon, which is arranged on the side adjacent to the band layer, and in that the textile product is only let into the band layer with the fiber layer and the carrier web lies outside the band layer.
  • a textile product is used for the production of the band, which - as is known per se - has a carrier web suitable for the tensile forces, but additionally has a fiber layer attached to it at least on one side, the textile product alone being embedded in the band layer with the fiber layer, the carrier web therefore comes to lie completely outside the strip layer.
  • This training has the advantage that even with a relatively thin carrier web - for example, a single layer Woven or knitted fabrics - a comparatively high void volume can be formed because it lies completely outside the band layer. Accordingly, the carrier web hampers the flexibility of the belt. It has surprisingly been found that the bond between the textile product and the strip layer is better than in the known solutions in which a carrier web is partially embedded in the strip layer, even though the bond is produced solely via the fiber layer. The shear strength is thus improved.
  • the fiber layer is able to absorb to a certain extent different changes in length of the band layer on the one hand and the carrier web on the other hand, as they can occur due to different materials for these parts.
  • the most suitable materials for the strip layer and the carrier web can therefore be used largely independently of their physical properties.
  • This tape thus has significantly improved properties compared to all previously known tapes of this type.
  • the side of the textile product facing away from the tape layer also carries a fiber layer. This provides additional padding on the paper side. With appropriate training of this fiber layer, it is even possible to dispense with the previously required wet felt running between the belt and the paper web. This can save considerable costs.
  • the fiber layer (s) is or are expediently designed as needled nonwoven web (s), in particular with longitudinally oriented fibers.
  • Each fiber layer can also consist of several needled nonwoven webs.
  • Single or multi-layer fabrics, knitted fabrics or scrim or a combination thereof, but also others, are suitable as the carrier web textile carrier webs as far as they can absorb tensile forces.
  • reinforcing threads running in the longitudinal and / or transverse direction are inserted into the fiber layer (s).
  • the carrier web is composed of two or more woven or knitted fabrics which are connected to one another by needling of the fiber layer (s).
  • the invention is illustrated in more detail using an exemplary embodiment schematically shown in longitudinal section. It shows a tape (1) which has a tape layer (2) with a front (3) and a back (4).
  • the back (4) is ground smooth. When used as intended in the wet press of a paper machine with an extended press nip, this rear side (4) slides past the pressure shoe in the press nip.
  • a textile product (5) is provided on the front side (3) of the strip layer (2), which has a carrier web (6) in the form of a double-layer fabric with longitudinal threads - denoted by (7) for example - and transverse threads - denoted by (8) as an example - has, in the top and bottom of each a fiber layers (9, 10 ⁇ ) is needled.
  • the fiber layer (9, 10 ⁇ ) form the outer layers of the textile product (5).
  • the overlying fiber layer (9) is partially embedded in the strip layer (2), in such a way that the carrier web (6) is still completely outside the strip layer (2). In this way, the connection between the carrier web (6) and the strip layer (2) is produced solely by the fiber layer (9). Nevertheless, this creates an extremely shear-resistant connection between the textile product (5) and the strip layer (2).
  • the carrier web (6) itself absorbs the tensile forces acting on the belt (1).
  • the lower band layer (10 ⁇ ) serves as a cushion against an adjacent, running wet felt, which in turn carries the paper web. With appropriate formation of the fiber layer (10 ⁇ ) can even be dispensed with the wet felt, so that the paper web directly on the belt (1), d. H. the fiber layer (10 ⁇ ), can rest.
  • polyamide, polyester, PPS and PAN can be used for the fiber layers (9, 10 ⁇ ) in particular polyamide, polyester, PPS and PAN.

Landscapes

  • Paper (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Artificial Filaments (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
EP91113448A 1990-09-05 1991-08-10 Band zum Einsatz in Papiermaschinen Expired - Lifetime EP0473969B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4028085A DE4028085C1 (enrdf_load_stackoverflow) 1990-09-05 1990-09-05
DE4028085 1990-09-05

Publications (2)

Publication Number Publication Date
EP0473969A1 EP0473969A1 (de) 1992-03-11
EP0473969B1 true EP0473969B1 (de) 1994-12-14

Family

ID=6413608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91113448A Expired - Lifetime EP0473969B1 (de) 1990-09-05 1991-08-10 Band zum Einsatz in Papiermaschinen

Country Status (7)

Country Link
EP (1) EP0473969B1 (enrdf_load_stackoverflow)
AT (1) ATE115663T1 (enrdf_load_stackoverflow)
CA (1) CA2050663C (enrdf_load_stackoverflow)
DE (2) DE4028085C1 (enrdf_load_stackoverflow)
DK (1) DK0473969T3 (enrdf_load_stackoverflow)
ES (1) ES2065588T3 (enrdf_load_stackoverflow)
FI (1) FI93240C (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6027615A (en) * 1997-05-06 2000-02-22 Albany International Corp. Belts for compliant calendering
US6645420B1 (en) 1999-09-30 2003-11-11 Voith Sulzer Papiertechnik Patent Gmbh Method of forming a semipermeable membrane with intercommunicating pores for a pressing apparatus
DE50013312D1 (de) * 1999-09-30 2006-09-21 Voith Paper Patent Gmbh Verfahren zur Entwässerung einer Faserstoffbahn
DE50112624D1 (de) 2001-04-18 2007-07-26 Stowe Woodward Ag Schuhpressenbelt
EP1293601A1 (de) 2001-09-17 2003-03-19 Stowe Woodward Aktiengesellschaft Schuhpressenbelt
GB0204308D0 (en) 2002-02-23 2002-04-10 Voith Fabrics Heidenheim Gmbh Papermachine clothing
US7011730B2 (en) 2002-12-30 2006-03-14 Albany International Corp. Structure for process belt
DE102004011665A1 (de) * 2004-03-10 2005-10-06 Stowe Woodward Ag Integraler Schuhpressenbelt

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4271222A (en) * 1980-02-04 1981-06-02 Albany International Corp. Papermakers felt and method of manufacture
GB2106555B (en) * 1981-09-15 1985-10-02 Albany Int Corp Improvements relating to extended nip dewatering presses and to the manufacture of belts for use in such presses
NL185678C (nl) * 1981-09-24 1990-06-18 Albany Int Corp Persinrichting voor het ontwateren van een vezelbaan, alsmede werkwijze voor het vervaardigen van een eindloze band daarvoor.
JPS61252389A (ja) * 1985-04-25 1986-11-10 市川毛織株式会社 抄紙用加圧ベルト

Also Published As

Publication number Publication date
DK0473969T3 (da) 1995-05-08
FI914107L (fi) 1992-03-06
FI914107A0 (fi) 1991-09-02
DE59103872D1 (de) 1995-01-26
EP0473969A1 (de) 1992-03-11
CA2050663A1 (en) 1992-03-06
CA2050663C (en) 2004-04-13
ATE115663T1 (de) 1994-12-15
FI93240B (fi) 1994-11-30
DE4028085C1 (enrdf_load_stackoverflow) 1992-02-27
ES2065588T3 (es) 1995-02-16
FI93240C (fi) 1995-03-10

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