EP1069235A1 - Bande de transfert pour une machine à papier - Google Patents

Bande de transfert pour une machine à papier Download PDF

Info

Publication number
EP1069235A1
EP1069235A1 EP99113193A EP99113193A EP1069235A1 EP 1069235 A1 EP1069235 A1 EP 1069235A1 EP 99113193 A EP99113193 A EP 99113193A EP 99113193 A EP99113193 A EP 99113193A EP 1069235 A1 EP1069235 A1 EP 1069235A1
Authority
EP
European Patent Office
Prior art keywords
transfer belt
belt according
carrier
layer
coating layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99113193A
Other languages
German (de)
English (en)
Other versions
EP1069235B1 (fr
Inventor
Walter Dr. Best
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
Priority to DE59904851T priority Critical patent/DE59904851D1/de
Priority to PT99113193T priority patent/PT1069235E/pt
Priority to EP99113193A priority patent/EP1069235B1/fr
Priority to AT99113193T priority patent/ATE236290T1/de
Priority to ES99113193T priority patent/ES2192815T3/es
Priority to DE20006376U priority patent/DE20006376U1/de
Priority to TW89112206A priority patent/TW538175B/zh
Priority to US09/610,984 priority patent/US6962885B1/en
Priority to MYPI20003081A priority patent/MY126045A/en
Priority to BRPI0002537-2A priority patent/BR0002537B1/pt
Priority to CA 2313664 priority patent/CA2313664C/fr
Priority to CN00120414A priority patent/CN1115438C/zh
Priority to ID20000570D priority patent/ID26472A/id
Priority to MXPA00006750A priority patent/MXPA00006750A/es
Priority to AU45128/00A priority patent/AU759498B2/en
Priority to KR10-2000-0039132A priority patent/KR100391386B1/ko
Publication of EP1069235A1 publication Critical patent/EP1069235A1/fr
Application granted granted Critical
Publication of EP1069235B1 publication Critical patent/EP1069235B1/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
    • D21F1/0063—Perforated sheets

Definitions

  • the invention relates to a transfer belt for a paper machine with a carrier and with a coating at least one flat side.
  • transfer belts used that the paper web by one or several presses of the press section together with the pass the associated press felt and after detachment of the press felt from the paper web to one point lead where the paper web mostly with the help of a Suction roller detached from the transfer belt and from one in the dryer section rotating dryer sieve taken over becomes. Examples of the management of transfer belts in the press section of a paper machine are shown in FIGS to 3 of EP-A 0 576 115.
  • This document describes a transfer belt that a carrier formed as a fabric, which ensures the structural strength of the transfer belt.
  • a carrier formed as a fabric, which ensures the structural strength of the transfer belt.
  • On the flat side intended for the installation of the paper web is a coating made of a polymeric material, for example an acrylic or polyurethane resin, in which the carrier fabric is partially embedded.
  • a non-woven fabric can be placed on the carrier to be needled.
  • a transfer belt must have two contradicting requirements fulfill. On the one hand, the transfer belt must be sufficient Apply adhesive force to the paper web so that the Paper web in the area where the press felt lifts off does not detach from the transfer belt. On the other hand, the Holding force in the area where the paper web from the Transfer ribbon is lifted off, so low that the decrease is not hindered.
  • the transfer belt after EP 0 576 115 attempts to meet these requirements by means of a Roughening of the paper web Surface to comply. To explain the effect of Roughening indicates that the roughness of the surface decrease in the press nip of a press and consequently the Surface become smoother, so that there is a thin film of water between paper web and surface.
  • the invention is therefore based on the object To design the transfer belt so that good adhesion of the Paper web is guaranteed so that the lifting of the Press felt does not cause the paper web to come off the Transfer ribbon leads.
  • the coating an inner layer and an adjacent one Has outer layer that has a porous structure has open cavities to the outside.
  • the invention is therefore an at least two-layer To provide structure of the coating, the Inner layer preferably elastic and impermeable to liquids be and the outer layer a porous structure should have. It has been shown that the Liability of the paper web after leaving the press nip is significantly improved and even where the press felt lifts off, not to detach the paper web comes from the transfer belt.
  • the Function of the transfer belt is advantageous if it is in the longitudinal direction has a certain elasticity so the elasticity the inner layer is also used in the longitudinal direction becomes.
  • the carrier's specific module should ⁇ 70 N / tex.
  • a material should be used be that at tensile stresses of 4 to 8 daN / cm of the carrier is elastic in the width direction. Come for this in particular materials with a corresponding elasticity like PBT, PES, PA6, PA6.6, PA6.10, PA6.12, PA11, PA12 and PTT in question, these materials also together can be combined.
  • the carrier secures - as with all belts for a paper machine -
  • the structural strength of the transfer belt can be constructed from threads, for example in the form of a fabric, knitted fabric or laid scrim. But there are also appropriately trained people Non-woven fabrics, for example in impregnated or compressed Form, in question, where possible a should have a uniform thickness. On the side, on of which the coating is applied should be the surface smooth, e.g. be ground, be trained. To one to establish a firm connection between the substrate and the coating, it is beneficial if the carrier is in the coating is at least partially embedded. Also one full embedding is possible.
  • Natural rubber is used as the material for the inner layer or an elastomer in question.
  • silicone elastomer is particularly suitable Silicone elastomer, polyester elastomer and polyurethane.
  • Organic filler particles for example TiO 2 or clay, can also be embedded in the inner layer in order to influence their hardness.
  • the inner layer it is advantageous if it has a thickness tolerance of a maximum of 100 ⁇ m. In order to achieve such a thickness tolerance, it can be turned and sanded accordingly before the outer layer is applied.
  • the cavities can be produced in a manner known per se by sprinkling and storing soluble particles on them, which can be dissolved out with a solvent to which the outer layer is resistant (cf. EP-A 0 786 551).
  • Water-soluble particles in the form of salts such as NaCl, KCl and / or CaCO 3 are particularly suitable for this.
  • the particles should have a diameter of ⁇ 2 ⁇ m in order to create correspondingly large cavities.
  • the outer layer To improve the wear resistance of the outer layer, it is proposed to provide it with a layer of nanoparticles on its surface.
  • These particles previously used in chemistry as pigments for color effects, cosmetics and data storage layers, whose particle sizes are in the nano range, effectively protect the outer layer against wear, especially if the nanoparticles consist of SiO 2 or metals, for example.
  • the nanoparticles can be applied in a suspension of a water-alcohol mixture, the mixture then being evaporated.
  • the nanoparticles can be provided with fluorocarbon chains in order to give surface areas of the outer layer a hydrophobic character and thereby facilitate the detachment of the paper web from the transfer belt.
  • Another alternative for the production of the outer layer is an electron beam hardened To use prepolymer emulsion.
  • prepolymer emulsion For this come in particular Silicones or polyurethanes in question in one Water-surfactant mixture are emulsified, which is used in electron beam curing is evaporated.
  • the Outer layer on the outside consists of materials that are areas different hydrophilicity or hydrophobicity form. Both are intended to detach the paper web from the Transfer ribbon facilitate, the areas and the differences with regard to hydrophilicity or hydrophobicity should be arranged and trained that still adequate adhesion of the paper web in the area of Lifting off the press felt is secured.
  • the transfer belt 1 seen in FIG. 1 has a carrier 2, which in this case is made from a fabric of polyamide threads.
  • the carrier 2 has an inner layer 3 on the top and a base layer on the bottom 4, with the carrier 2 in both layers 3, 4 is embedded.
  • Inner layer 3 and base layer 4 consist of a silicone elastomer.
  • an outer layer 5 On top of the inner layer 3 is an outer layer 5 applied, which has a porous structure and a has smooth surface 6.
  • the surface 6 is for the system a paper web is provided while the bottom the base layer 4 over the rollers of a paper machine running.
  • the outer layer 5 essentially from a cast polyurethane layer 7.
  • To in this polyurethane layer 7 for Cavities open on the outside - designated by way of example with 8 - To be produced are in the polyurethane material before the application salt particles - designated 9 by way of example - evenly distributed and in an average Size ⁇ 2 ⁇ m has been stored.
  • After training the polyurethane layer 7 on the inner layer 3 those salt particles 9 are washed out with water that has not been completely removed from the polyurethane layer 7 were enclosed, i.e. connection to the outside had. In this way, cavities 8 were created the depth of the previous penetration depth of the salt particles 9 corresponds.
  • Those salt particles 9 that with Distance to surface 6 were not stored has been removed and therefore still in the polyurethane layer 7 available.
  • the cavities 8 interrupt the surface 6. Nevertheless, remain between the openings of the cavities Areas of the surface 6 which lie in one plane as well connected and smooth. The paper web a large investment area is thus offered, whereby a correspondingly high adhesive force is created.
  • the Cavities 8 generate due to their expansion after passing through of the press nip a negative pressure that the liability supports the paper web on the surface 6.
  • Outer layer 5 is also the starting material polyurethane.
  • this material is in powder form applied and then sintered so that here also a polyurethane layer 10 with a smooth surface 11 has trained.
  • the polyurethane powder were Salt particles stored (cf. in this respect that in EP-A 0 786 551 described method), which then by a Washing process have been completely extracted so that a porous structure forming from the surface 11 open cavities - exemplified by 12 - came into being.
  • the effect of the polyurethane layer 10 is the same as for the polyurethane layer 7 according to FIG Figure 2.
  • FIG. 4 shows one Outer layer 5, which consists of an emulsion of prepolymers has been manufactured. This emulsion is on the inner layer 3 has been applied and then electron beam hardened been. As a result, individual, with each other in Related polymer particles - exemplary with 13 designated - emerged, between which there are cavities - designated 14 by way of example - have formed. All in all is also a porous structure with a comparatively smooth surface 15 arose.

Landscapes

  • Paper (AREA)
  • Laminated Bodies (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Making Paper Articles (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Package Closures (AREA)
EP99113193A 1999-07-08 1999-07-08 Bande de transfert pour une machine à papier Expired - Lifetime EP1069235B1 (fr)

Priority Applications (16)

Application Number Priority Date Filing Date Title
DE59904851T DE59904851D1 (de) 1999-07-08 1999-07-08 Transferband für eine Papiermaschine
PT99113193T PT1069235E (pt) 1999-07-08 1999-07-08 Fita de transferencia para uma maquina de papel
EP99113193A EP1069235B1 (fr) 1999-07-08 1999-07-08 Bande de transfert pour une machine à papier
AT99113193T ATE236290T1 (de) 1999-07-08 1999-07-08 Transferband für eine papiermaschine
ES99113193T ES2192815T3 (es) 1999-07-08 1999-07-08 Cinta de transferencia para una maquina papelera.
DE20006376U DE20006376U1 (de) 1999-07-08 2000-04-06 Transferband für eine Papiermaschine
TW89112206A TW538175B (en) 1999-07-08 2000-06-21 Transfer belt for a paper making machine
BRPI0002537-2A BR0002537B1 (pt) 1999-07-08 2000-07-06 cinta de transferência para uma máquina para papel.
US09/610,984 US6962885B1 (en) 1999-07-08 2000-07-06 Transfer belt for a paper machine
MYPI20003081A MY126045A (en) 1999-07-08 2000-07-06 Transfer belt for a paper machine
CN00120414A CN1115438C (zh) 1999-07-08 2000-07-07 造纸机用的传送带
ID20000570D ID26472A (id) 1999-07-08 2000-07-07 Sabuk pemindahan untuk mesin kertas
MXPA00006750A MXPA00006750A (es) 1999-07-08 2000-07-07 Banda de transferencia para una maquina para fabricar papel.
CA 2313664 CA2313664C (fr) 1999-07-08 2000-07-07 Courroie de transmission pour machine a papier
AU45128/00A AU759498B2 (en) 1999-07-08 2000-07-07 Transfer belt for a paper machine
KR10-2000-0039132A KR100391386B1 (ko) 1999-07-08 2000-07-08 제지 기계용 이송 벨트

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99113193A EP1069235B1 (fr) 1999-07-08 1999-07-08 Bande de transfert pour une machine à papier

Publications (2)

Publication Number Publication Date
EP1069235A1 true EP1069235A1 (fr) 2001-01-17
EP1069235B1 EP1069235B1 (fr) 2003-04-02

Family

ID=8238534

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99113193A Expired - Lifetime EP1069235B1 (fr) 1999-07-08 1999-07-08 Bande de transfert pour une machine à papier

Country Status (6)

Country Link
EP (1) EP1069235B1 (fr)
AT (1) ATE236290T1 (fr)
DE (2) DE59904851D1 (fr)
ES (1) ES2192815T3 (fr)
MY (1) MY126045A (fr)
PT (1) PT1069235E (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003027387A1 (fr) * 2001-09-26 2003-04-03 Albany International Corp. Tissu industriel
EP1443145A1 (fr) * 2003-01-29 2004-08-04 Ichikawa Co.,Ltd. Bande de transfert pour une bande de papier humide
WO2005090429A1 (fr) 2004-03-16 2005-09-29 Albany International Corp. Courroies revetues de polyurethane et recouvrements de rouleau comprenant des nanocharges
EP1586701A1 (fr) * 2004-04-13 2005-10-19 Voith Paper Patent GmbH Dispositif de séchage
WO2005124019A1 (fr) * 2004-06-14 2005-12-29 Kadant Web Systems, Inc. Elements plans destines a des machines a papier
WO2006072506A1 (fr) * 2005-01-05 2006-07-13 Voith Patent Gmbh Bande support
EP1793036A1 (fr) 2005-12-02 2007-06-06 Heimbach GmbH & Co. KG Procédé de fabrication de bandes imperméables pour machines à papier et dispositif de revêtement pour la mise en oeuvre du procédé
EP3002367A1 (fr) 2014-10-01 2016-04-06 Ichikawa Co., Ltd. Courroie de transfert d'une bande de papier humide, système et procédé de fabrication de papier et procédé de production d'une telle courroie
EP3098347A1 (fr) 2015-05-28 2016-11-30 Ichikawa Co., Ltd. Courroie de transfert d'une bande de papier humide

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005045428A1 (de) * 2005-09-23 2007-03-29 Voith Patent Gmbh Transferband
DE102006018846A1 (de) * 2006-04-22 2007-10-25 Voith Patent Gmbh Transportband zur Herstellung von Bahnmaterial, insbesondere Papier oder Karton

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0547816A1 (fr) * 1991-12-05 1993-06-23 Albany International Corp. Perfectionnements concernant les toiles pour machine à papier
EP0576115A1 (fr) 1992-06-11 1993-12-29 Albany International Corp. Bande de transfert
EP0786551A1 (fr) * 1996-01-25 1997-07-30 CONRAD MUNZINGER & CIE AG Procédé pour la fabrication d'une bande de matériau

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0547816A1 (fr) * 1991-12-05 1993-06-23 Albany International Corp. Perfectionnements concernant les toiles pour machine à papier
EP0576115A1 (fr) 1992-06-11 1993-12-29 Albany International Corp. Bande de transfert
EP0786551A1 (fr) * 1996-01-25 1997-07-30 CONRAD MUNZINGER & CIE AG Procédé pour la fabrication d'une bande de matériau

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6726809B2 (en) 2001-09-26 2004-04-27 Albany International Corp. Industrial process fabric
WO2003027387A1 (fr) * 2001-09-26 2003-04-03 Albany International Corp. Tissu industriel
EP1443145A1 (fr) * 2003-01-29 2004-08-04 Ichikawa Co.,Ltd. Bande de transfert pour une bande de papier humide
US7413633B2 (en) 2004-03-16 2008-08-19 Albany International Corp. Belts and roll coverings having a nanocomposite coating
WO2005090429A1 (fr) 2004-03-16 2005-09-29 Albany International Corp. Courroies revetues de polyurethane et recouvrements de rouleau comprenant des nanocharges
EP1586701A1 (fr) * 2004-04-13 2005-10-19 Voith Paper Patent GmbH Dispositif de séchage
WO2005124019A1 (fr) * 2004-06-14 2005-12-29 Kadant Web Systems, Inc. Elements plans destines a des machines a papier
WO2006072506A1 (fr) * 2005-01-05 2006-07-13 Voith Patent Gmbh Bande support
US7794569B2 (en) 2005-01-05 2010-09-14 Voith Patent Gmbh Support band
EP1793036A1 (fr) 2005-12-02 2007-06-06 Heimbach GmbH & Co. KG Procédé de fabrication de bandes imperméables pour machines à papier et dispositif de revêtement pour la mise en oeuvre du procédé
EP3002367A1 (fr) 2014-10-01 2016-04-06 Ichikawa Co., Ltd. Courroie de transfert d'une bande de papier humide, système et procédé de fabrication de papier et procédé de production d'une telle courroie
US9725850B2 (en) 2014-10-01 2017-08-08 Ichikawa Co., Ltd. Wet paper web transfer belt, papermaking system, papermaking method and method for producing a wet paper web transfer belt
EP3098347A1 (fr) 2015-05-28 2016-11-30 Ichikawa Co., Ltd. Courroie de transfert d'une bande de papier humide

Also Published As

Publication number Publication date
DE59904851D1 (de) 2003-05-08
ES2192815T3 (es) 2003-10-16
EP1069235B1 (fr) 2003-04-02
DE20006376U1 (de) 2000-11-23
ATE236290T1 (de) 2003-04-15
PT1069235E (pt) 2003-07-31
MY126045A (en) 2006-09-29

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