EP1069235B1 - Bande de transfert pour une machine à papier - Google Patents

Bande de transfert pour une machine à papier Download PDF

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Publication number
EP1069235B1
EP1069235B1 EP99113193A EP99113193A EP1069235B1 EP 1069235 B1 EP1069235 B1 EP 1069235B1 EP 99113193 A EP99113193 A EP 99113193A EP 99113193 A EP99113193 A EP 99113193A EP 1069235 B1 EP1069235 B1 EP 1069235B1
Authority
EP
European Patent Office
Prior art keywords
transfer belt
layer
coating layer
inner layer
carrier
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
EP99113193A
Other languages
German (de)
English (en)
Other versions
EP1069235A1 (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 EP99113193A priority patent/EP1069235B1/fr
Priority to PT99113193T priority patent/PT1069235E/pt
Priority to ES99113193T priority patent/ES2192815T3/es
Priority to AT99113193T priority patent/ATE236290T1/de
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 BRPI0002537-2A priority patent/BR0002537B1/pt
Priority to MYPI20003081A priority patent/MY126045A/en
Priority to CA 2313664 priority patent/CA2313664C/fr
Priority to AU45128/00A priority patent/AU759498B2/en
Priority to MXPA00006750A priority patent/MXPA00006750A/es
Priority to ID20000570D priority patent/ID26472A/id
Priority to CN00120414A priority patent/CN1115438C/zh
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 liquid-impermeable Transfer belt for a paper machine with a carrier and with a coating on at least one flat side.
  • transfer ribbons transfer work
  • transfer work used the paper web through one or several presses of the press section together with each Pass the corresponding press felt and after detachment the press felt from the paper web to a place lead, where the paper web mostly with the help of a Suction roller detached from the transfer belt and from a taken over in the drying section circulating dryer becomes.
  • Examples of the guidance of transfer tapes in The press section of a paper machine is US-A-4,483,745 and FIGS. 1 to 3 of EP-A-0 576 115.
  • This document describes a transfer belt which having a carrier formed as a tissue, which ensures the structural strength of the transfer belt.
  • a transfer belt which having a carrier formed as a tissue, which ensures the structural strength of the transfer belt.
  • a liquid-impermeable coating of a polymeric material for example an acrylic radiator Polyurethane resin, provided, in which the carrier fabric partially embedded.
  • the carrier fabric partially embedded.
  • a transfer band must have two conflicting demands fulfill.
  • the transfer ribbon must have sufficient Apply adhesive force to the paper web, so that the Paper web in the area where the press felt lifts off not detached from the transfer belt.
  • the Adhesive force in the area where the paper web of the Transfer ribbon is lifted so low that the decrease not hindered.
  • drainage tapes for paper machines are known, which are liquid permeable.
  • the drainage tape according to EP-A-0 786 551 are passageways present over which the squeezed from the paper web Water can be diverted. The passageways become by communicating cavities formed in the manufacture of the web through Removal of soluble particles from the plastic layer arise.
  • EP-A-0 547 816 is a liquid-permeable Press felt disclosed in particular Way is constructed, with it the so-called impulse drying to carry out. It will be special Care is taken that the press felt is well off the paper web solve.
  • the invention is based on the object, a transfer belt to make that a good adhesion of the paper web is guaranteed, so that the lifting of the press felt not to release the paper web from the transfer belt leads.
  • the coating an inner layer and an adjacent thereto Outer layer, wherein the outer layer has a porous structure with open to the outside cavities having.
  • the basic idea of the invention is therefore a provide at least two-layer structure of the coating, wherein the inner layer is preferably elastic and liquid impermeable and the outer layer a should have porous structure. It has been shown that thereby the adhesion of the paper web after leaving the press nip is significantly improved and it even where the press felt lifts, not to a detachment the paper web comes from the transfer belt.
  • the Function of the transfer belt beneficial if it is in the longitudinal direction has a certain elasticity, hence the elasticity the inner layer also utilized in the longitudinal direction becomes.
  • the specific modulus of the carrier should be ⁇ 70 N / tex.
  • a material should be used at tensile stresses of 4 to 8 daN / cm of the carrier is elastic in the width direction. Come for this in particular according to elastically adjusted materials such as PBT, PES, PA6, PA6.6, PA6.10, PA6.12, PA11, PA12 and PTT in question, these materials also with each other can be combined.
  • the carrier secures - as with all tapes for a paper machine -
  • the structural strength of the transfer belt may be constructed of threads, for example in the form of a woven, knitted or laid fabric. But there are also appropriately trained Nonwoven fabrics, for example in impregnated or compressed Form, in question, where possible a should have uniform thickness.
  • the coating should be applied to the surface smooth, e.g. ground, be trained. To one establish firm connection between carrier and coating, It is beneficial if the carrier is in the coating at least partially embedded. Also one full embedding is possible.
  • the material used for the inner layer is natural rubber or an elastomer in question.
  • inorganic filler particles for example TiO 2 or clay
  • inorganic filler particles for example TiO 2 or clay
  • the material for the outer layer is preferably polyurethane and / or silicone elastomer and / or polyester elastomer in question.
  • the cavities in a conventional manner can be prepared by sprinkling on them and stored in them soluble particles which can be dissolved out with a solvent against which the outer layer is resistant (see EP-A 0 786 551).
  • water-soluble particles in the form of salts such as NaCl, KCl and / or CaCO 3 are suitable.
  • the particles should have a diameter of ⁇ 2 ⁇ m in order to produce 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.
  • the nanoparticles may be applied in a suspension of a water-alcohol mixture, the mixture then being evaporated.
  • the nanoparticles may be provided with fluorocarbon chains to impart a hydrophobic character to surface areas of the outer layer, thereby facilitating separation 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. This is especially true Silicones or polyurethanes in question in one Water-surfactant mixture are emulsified, the electron beam curing is evaporated.
  • the Outer layer on the outside is made of materials, the areas different hydrophilicity or hydrophobicity form. Both should be the detachment of the paper web from the Facilitate transfer ribbon, the areas and the differences in terms of hydrophilicity or hydrophobicity so should be arranged and designed that still sufficient adhesion of the paper web in the area of Lifting the press felt is secured.
  • the transfer belt 1 to be seen in FIG. 1 has a carrier 2, which in this case from a tissue using consists of polyamide threads.
  • the carrier 2 has an inner layer 3 at the top and a base layer at the bottom 4, wherein 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 applied, which has a porous structure and a smooth surface 6 has.
  • the surface 6 is for the plant a paper web provided while the bottom the base layer 4 over the rolls of a paper machine running.
  • the outer layer 5 essentially of a cast polyurethane layer 7.
  • the polyurethane material salt particles prior to application - exemplified by 9 - evenly distributed and in an average Size ⁇ 2 microns has been stored.
  • those salt particles 9 are washed out by means of water that has not been completely removed from the polyurethane layer 7 were so enclosed, so connection to the outside had.
  • cavities 8 have been created, their depth of the previous penetration depth of the salt particles 9 corresponds.
  • Those salt particles 9, which with Distance to the surface 6 were stored are not 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 a plane as well interconnected and smooth.
  • the paper web Thus, a large contact surface is offered, which a correspondingly high adhesive force is created.
  • the Cavities 8 generate due to their expansion after passing through the press nip a negative pressure, the liability supports the paper web on the surface 6.
  • the starting material is also polyurethane.
  • this material is in powder form applied and then sintered so that Again, a polyurethane layer 10 with a smooth surface 11 has formed.
  • Embedded salt particles see insofar as in EP-A 0 786 551 described method
  • washing process have been completely dissolved out, so that a porous structure under formation to the surface 11 open cavities - exemplified with 12 - originated.
  • the effect of the polyurethane layer 10 is the same as for the polyurethane layer 7 according to FIG FIG. 2.
  • FIG. 4 shows a Outer layer 5, which consists of an emulsion of prepolymers has been produced.
  • This emulsion is on the inner layer 3 and then electron beam cured Service.

Claims (19)

  1. Bande de transfert imperméable aux liquides pour une machine à papier avec un support (2) et avec un revêtement (3, 5) sur au moins un côté plat, caractérisé en ce que le revêtement comporte une couche intérieure (3) et une couche extérieure (5) adjacente à cette dernière, la couche extérieur (5) présentant une structure poreuse avec des cavités (8, 12, 14) ouvertes sur le côté extérieur (6, 11, 15).
  2. Bande de transfert selon la revendication 1, caractérisée en ce que la couche intérieure (3) est imperméable aux liquides.
  3. Bande de transfert selon la revendication 1 ou 2, caractérisée en ce que la couche intérieure (3) est conçue élastique dans le sens longitudinal et/ou élastique sous compression.
  4. Bande de transfert selon l'une des revendications 1 à 3, caractérisée en ce que le support (2) a un module spécifique de ≤ 70 N/tex dans le sens longitudinal.
  5. Bande de transfert selon la revendication 4, caractérisée en ce que l'on utilise pour le support une matière qui est élastique à des contraintes de traction comprises entre 4 et 8 daN par cm de largeur du support (2).
  6. Bande de transfert selon l'une des revendications 1 à 5, caractérisée en ce que le support (2) est un tissu, un tissu à mailles, un tissu filé ou un non tissé ou une combinaison de ceux-ci.
  7. Bande de transfert selon l'une des revendications 1 à 6, caractérisée en ce que le support (2) est incorporé au moins partiellement dans la couche intérieure (3, 5).
  8. Bande de transfert selon l'une des revendications 1 à 7, caractérisée en ce que la couche intérieure (3) est constituée de caoutchouc naturel ou d'un élastomère, en particulier un élastomère de silicone, un polyuréthane et/ou un élastomère de polyester.
  9. Bande de transfert selon l'une des revendications 1 à 8, caractérisée en ce que la couche intérieure (3) a une dureté comprise entre 85 et 95 Shore A.
  10. Bande de transfert selon l'une des revendications 1 à 9, caractérisée en ce que la couche intérieure comporte des particules de charge inorganiques.
  11. Bande de transfert selon l'une des revendications I à 8, caractérisée en ce que la couche intérieure (3) a une tolérance d'épaisseur maximale de 100 µm.
  12. Bande de transfert selon l'une des revendications 1 à 11, caractérisée en ce que la couche extérieure (5) est constituée de polyuréthane et/ou d'un élastomère de silicone et/ou d'un élastomère de polyester.
  13. Bande de transfert selon l'une des revendications 1 à 12, caractérisée en ce que les cavités (8, 12, 14) dans la couche extérieure (5) ont un diamètre moyen de ≤ 2 µm.
  14. Bande de transfert selon l'une des revendications 1 à 13, caractérisée en ce que la couche extérieure (5) est pourvue de nanoparticules sur sa surface.
  15. Bande de transfert selon la revendication 14, caractérisée en ce que les nanoparticules sont constituées au moins partiellement de SiO2.
  16. Bande de transfert selon la revendication 14 ou 15, caractérisée en ce que les nanoparticules comportent des chaínes d'hydrocarbures fluorés.
  17. Bande de transfert selon l'une des revendications 1 à 11, caractérisée en ce que la couche extérieure (5) est constituée d'une émulsion de prépolymère durci par faisceaux électroniques.
  18. Bande de transfert selon l'une des revendications 1 à 17, caractérisée en ce que la couche extérieure (5) est constituée, à l'extérieur, de matières qui forment des zones d'hydrophilie ou d'hydrophobie différente.
  19. Bande de transfert selon l'une des revendications 1 à 18, caractérisée en ce que la couche extérieure a une épaisseur de ≤ 3 mm et la couche intérieure a une épaisseur comprise entre 1 et 3 mm.
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
EP99113193A EP1069235B1 (fr) 1999-07-08 1999-07-08 Bande de transfert pour une machine à papier
PT99113193T PT1069235E (pt) 1999-07-08 1999-07-08 Fita de transferencia para uma maquina de papel
ES99113193T ES2192815T3 (es) 1999-07-08 1999-07-08 Cinta de transferencia para una maquina papelera.
AT99113193T ATE236290T1 (de) 1999-07-08 1999-07-08 Transferband für eine papiermaschine
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
MYPI20003081A MY126045A (en) 1999-07-08 2000-07-06 Transfer belt for a paper machine
US09/610,984 US6962885B1 (en) 1999-07-08 2000-07-06 Transfer belt for a paper machine
BRPI0002537-2A BR0002537B1 (pt) 1999-07-08 2000-07-06 cinta de transferência para uma máquina para papel.
AU45128/00A AU759498B2 (en) 1999-07-08 2000-07-07 Transfer belt for a paper machine
MXPA00006750A MXPA00006750A (es) 1999-07-08 2000-07-07 Banda de transferencia para una maquina para fabricar papel.
ID20000570D ID26472A (id) 1999-07-08 2000-07-07 Sabuk pemindahan untuk mesin kertas
CA 2313664 CA2313664C (fr) 1999-07-08 2000-07-07 Courroie de transmission pour machine a papier
CN00120414A CN1115438C (zh) 1999-07-08 2000-07-07 造纸机用的传送带
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 EP1069235A1 (fr) 2001-01-17
EP1069235B1 true 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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1847646A1 (fr) * 2006-04-22 2007-10-24 Voith Patent GmbH Bande de transport destinée à la fabrication de matériaux en bande, en particulier du papier et du carton

Families Citing this family (10)

* 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
JP4036765B2 (ja) * 2003-01-29 2008-01-23 イチカワ株式会社 湿紙搬送用ベルト
ZA200607840B (en) 2004-03-16 2008-05-28 Albany Int Corp Polyurethane coated belts and roll coverings comprising nanofillers
DE102004017818A1 (de) * 2004-04-13 2005-11-03 Voith Paper Patent Gmbh Trockenanordnung
KR20070045192A (ko) * 2004-06-14 2007-05-02 카단트 웹 시스템즈, 인코포레이티드 제지 기계에 사용하기 위한 편평 소자
DE102005000793A1 (de) * 2005-01-05 2006-07-13 Voith Paper Patent Gmbh Stützband
DE102005045428A1 (de) * 2005-09-23 2007-03-29 Voith Patent Gmbh Transferband
ES2514466T3 (es) 2005-12-02 2014-10-28 Heimbach Gmbh & Co. Kg Procedimiento para fabricar cintas de máquina papelera impermeables a líquido y dispositivo de revestimiento para el mismo
JP6392060B2 (ja) 2014-10-01 2018-09-19 イチカワ株式会社 湿紙搬送ベルト、抄紙システム、抄紙方法および湿紙搬送ベルトの製造方法
JP6298011B2 (ja) 2015-05-28 2018-03-20 イチカワ株式会社 湿紙搬送ベルト

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9125889D0 (en) * 1991-12-05 1992-02-05 Albany Research Uk Improvements in and relating to paper machine clothing
US5298124A (en) 1992-06-11 1994-03-29 Albany International Corp. Transfer belt in a press nip closed draw transfer
EP0786551B1 (fr) * 1996-01-25 2000-01-19 CONRAD MUNZINGER & CIE AG Procédé pour la fabrication d'une bande de matériau

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1847646A1 (fr) * 2006-04-22 2007-10-24 Voith Patent GmbH Bande de transport destinée à la fabrication de matériaux en bande, en particulier du papier et du carton

Also Published As

Publication number Publication date
DE59904851D1 (de) 2003-05-08
MY126045A (en) 2006-09-29
ATE236290T1 (de) 2003-04-15
DE20006376U1 (de) 2000-11-23
ES2192815T3 (es) 2003-10-16
PT1069235E (pt) 2003-07-31
EP1069235A1 (fr) 2001-01-17

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