EP0643168B1 - Dispositif de l'enduction d'une bande de papier - Google Patents

Dispositif de l'enduction d'une bande de papier Download PDF

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Publication number
EP0643168B1
EP0643168B1 EP19940111844 EP94111844A EP0643168B1 EP 0643168 B1 EP0643168 B1 EP 0643168B1 EP 19940111844 EP19940111844 EP 19940111844 EP 94111844 A EP94111844 A EP 94111844A EP 0643168 B1 EP0643168 B1 EP 0643168B1
Authority
EP
European Patent Office
Prior art keywords
paper web
air
drying
air support
roller slot
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.)
Revoked
Application number
EP19940111844
Other languages
German (de)
English (en)
Other versions
EP0643168A1 (fr
Inventor
Rudolf Beisswanger
Martin Dr. Kustermann
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.)
Voith Patent GmbH
Original Assignee
JM Voith 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27205968&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0643168(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from EP93112695A external-priority patent/EP0643167A1/fr
Application filed by JM Voith GmbH filed Critical JM Voith GmbH
Priority to EP19940111844 priority Critical patent/EP0643168B1/fr
Publication of EP0643168A1 publication Critical patent/EP0643168A1/fr
Application granted granted Critical
Publication of EP0643168B1 publication Critical patent/EP0643168B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/04—Physical treatment, e.g. heating, irradiating
    • D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/001—Drying webs by radiant heating
    • D21F5/002—Drying webs by radiant heating from infrared-emitting elements
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/18—Drying webs by hot air
    • D21F5/185—Supporting webs in hot air dryers
    • D21F5/187—Supporting webs in hot air dryers by air jets

Definitions

  • the invention relates to a device for coating a paper web. On the preamble of claim 1 is referred to.
  • the invention is based on document (6), in particular on its figure 1.
  • Two application rollers are provided, which form a gap with one another form, through which a paper web runs.
  • Both application rollers are ever a nozzle applicator assigned, each a coating color film on the Applying the outer surface of the roller in question.
  • the nozzle applicator points a nozzle with two nozzle lips, one of which is at its free end carries a roller squeegee. This is a dosed application of coating color on the Shell surface of the roller in question is possible. It is about this accordingly, an indirect order process, since the line first applied the outer surface of the roller and from there to the paper web is transmitted.
  • both sides of the paper web need not be deleted to become. So it is e.g. conceivable to only coat one side and the others not at all, or to paint in installments, whereby several of the roller pairs mentioned with the assigned applicators be provided, the paper web after receiving a stroke is dried in each case.
  • the invention has for its object a coating device according to to design the preamble of claim 1 such that the Orange peel effect without any significant additional effort in even better Way is reduced or completely eliminated.
  • one parameter is the trigger angle, i.e. the angle at which the paper web after the application of the Dash leaves the nip and the other parameter is the Web tension that prevails in the paper web after the nip. Both must be precisely adjustable.
  • the second parameter makes it special Difficulties because the coated paper web, which is still damp, cannot pass through a pair of draw rollers, i.e. a pair of driven rollers that clamp the web between them and the web thus transferring a certain traction.
  • This measure consists of the characteristic Features of claim 1.
  • it is at least one Air-air bar immediately downstream of the nip, the Removal of the immediately downstream air bar from Roll gap of the two rolls 0.3 to 1 times the roll diameter is.
  • a distance on the order of 0.5 to 0.8 times the roll diameter is aimed for. It has been shown that so that ideal conditions can be established.
  • Adding the Infrared is particularly cheap because the infrared rays go deep into the Penetrate paper web, have a high energy density and that in the Heat up water contained in the paper web, so that in the downstream Suspended drying line the evaporation relatively easy can be made.
  • first infrared dryer that followed the nip Drying facilities.
  • this first infrared dryer immediately behind the (at least) one Air beam arranged.
  • a special infrared dryer provided the one between himself and the coated paper web Can generate air cushion.
  • Figure 1 shows a coating system with two coating stations and with in between located drying facilities.
  • Figures 2 to 5 show coating stations, the guide organs in different embodiment and different arrangement are connected downstream.
  • first coating station 1 shows a first coating station 1, which has two rollers.
  • a coating unit 1.1 is assigned to one of these two rollers.
  • a pulling device comprising two Lifting air beams 2 and 3.
  • This is followed by an infrared drying section 4, a short one Dryer section 5 with three drying cylinders 5.1, 5.2 and 5.3, one Suction guide roller 5.4 and a number of guide rollers.
  • a second Coating station 6 again has two rollers.
  • One roller is one Assigned work 6.1.
  • An infrared drying section then follows again 7 and an end dryer group 8.
  • the system shown in Figure 2 comprises a two-row Cylinder dryer section 1, of which one can still see the end, also a Smoothing unit 3, a first coating station 5, one of these downstream Dryer 6, a dryer section 7 with drying cylinders, a second Coating station 8, another dryer 9, a dryer section 9.1 with Drying cylinders and a take-up station 10.
  • the two coating stations 5 and 8 each have two Nozzle coater 5.1, 5.2 or 8.1 and 8.2. This means that the Paper web can be coated on both sides in each coating station.
  • the Dryers 6 and 9 are levitation dryers that carry the web freely and up bring such a dry content (at least 70% dry) that the line in the subsequent cylinder dry groups 7 and 9.1 is touchable.
  • Figures 3-6 each show schematically application stations, downstream control organs and these downstream Drying facilities.
  • the application station according to Figure 3 comprises two rollers 10, 20.
  • One of these two application rollers, namely roller 10, is one Nozzle applicator 10.1 assigned.
  • the other roller 20 is free of one such commissioned work.
  • the paper web 11 is in the direction of the arrow by a Roll nip passed out of the outer surfaces of the two Rollers 10 and 20 is formed.
  • a guide element in follows the roller gap Shape of an air bar 12.
  • the air bar is only schematic shown. It consists of a hollow profile beam that is on its Paper web 11 facing side has a plurality of holes 12.1. The holes 1 extend over the entire length of the Air bar 12, and thus over the entire width of the paper web 11th
  • An infrared drying section 13 connects to the air-air beam 12, followed by a floating dry section 14. This also points Support air bars 14.1, 14.2, 14.3, which are only indicated in outline.
  • the paper web 11 is guided as follows: the paper web 11 after the apex of the two rollers, first wraps around the Roller 10 by a certain wrap angle x. Wraps around her then the air beam 12, again a slight one Experiences redirection. Further redirections take place within the Floating dry section as it passes through the Lifting air beam 14.1,14.2,14.3.
  • the floating drying section 14 is a further infrared drying section 15 downstream.
  • Two air gaps 22 and 23 follow the application gap. These are open opposite sides arranged. There follow one Infrared section 24, a floating drying section 25 and another Infrared section 26. In this case, the three drying sections mentioned are - seen in the running direction of the paper web 11 - the same length.
  • the paper web 11 leaves the nip, it being only very slight wraps around the roller 10.
  • the wrap angle x is thus so small that you don't recognize him in the illustration.
  • the wrap is also the Air struts 22 and 23 only a very slight, so that you can also does not recognize.
  • the paper web 11 again deleted on both sides.
  • the nip follows first an air beam 40 located on one side of the web, followed by a bank arranged on the other side of the paper web 11 Trag air beams 41 and 42.
  • roller 10 can have a softer surface have a back-up roller 20. This is quite unusual because normally the path follows the harder roller, so that the harder roller wraps around becomes.
  • FIG. 7 shows an inventive device of special construction.
  • the two rollers 10, 20 are arranged such that the paper web 11 at an angle of about 20 ° to the vertical through the nip runs through.
  • the air girders 50 follow. This is followed by the Drying device, the elements of which are not specified in detail, but are easily recognizable.
  • the paper web thus takes off a V-shaped course.
  • the two legs of this V can under different angles, each at an angle of between 10 and 60 ° against the horizontal.
  • the paper web 11 runs in the essentially straight through the entire facility, starting with the two rollers 10, 20 to the last drying section, which in turn is an IR drying section is.
  • the arrangement according to FIG. 11 again has a straight line Paper web guide on. There are different drying sections towards each other.
  • Figure 12 shows a system similar to that of Figure 9.
  • the special here is that air elements in the elements of the drying section are integrated.
  • the individual infrared dryer elements designed so that they between themselves and the coated paper web Can generate air cushion.
  • Figure 13 shows an embodiment in which the web from bottom to runs through the nip at the top.
  • the train doesn't need to do that necessarily run vertically; it can also work against the vertical be inclined. Again, there is one-sided or two-sided Application of coating color possible.
  • FIGS. 14a to 14d show embodiments of air bar beams.
  • the wing of the air bar according to Figure 14a has a single line from holes from which the air flows out.
  • the holes are arranged along a straight line.
  • the bores are opposite one another transferred.
  • the web running direction is through an arrow A indicated.
  • the two air beams 50, 60 have slots on. These can extend across the entire width of the web (i.e. across the the entire length of the individual bar); however, per bar also several such slots can be arranged one behind the other. How one see, the slot is located upstream in each bar on the incoming paper web 11 related. An air curtain emerges from the slots off - see arrows B.
  • an air bar 60 can be seen. This in turn has air slots in its two edge areas, the over the entire width of the paper web and thus over the entire Extend the length of the air beam. Arrows B are again here shown, each of which is intended to illustrate an "air curtain”.
  • Within Trag air beam 60 is a box-like hollow body 60.1, which is also extends across the width of the paper web. This box is with one Provide row of holes 60.2. Through these holes, the air that was brought out of the slots, sucked in again and then laterally - not shown here - discharged from box 60.1. This Arrangement is used to create a stable air cushion.
  • hollow Support air beam 60 provided a perforated plate.

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  • Paper (AREA)

Claims (8)

  1. Dispositif d'enduction d'une bande de papier
    1.1 avec deux rouleaux (10, 20) qui sont placés parallèles l'un à l'autre et forment conjointement une fente de rouleaux destinée au passage de la bande de papier (10) ;
    1.2 avec au moins une buse d'application (1.1, 5.1, 5.2, 8.1, 8.2, 10.1, 10.2) destinée à l'application d'une couche de peinture sur la surface d'enveloppe d'au moins l'un des rouleaux (10, 11) à des fins de transfert de la couche de peinture, dans la fente de rouleaux, de la surface d'enveloppe sur une face de la bande de papier (11) :
    1.3 avec des organes de guidage placés après la fente de rouleaux et guidant la bande de papier ;
    1.4 les organes de guidage étant :
    des barres pneumatiques porteuses (2, 3, 12, 14.1, 14.2, 14.3, 22, 23, 30, 31, 32, 40, 41, 42, 50, 60), qui produisent un coussin d'air porteur entre la bande de papier (11) et la surface de la barre pneumatique porteuse qui est tournée vers la bande de papier ;
    1.5 les barres pneumatiques porteuses (2, 3, 12, 14.1, 14.2, 14.3, 22, 23, 30, 31, 32, 40, 41, 42, 50, 60) étant placées de telle manière que la bande de papier (11) est déviée au moins une fois après la fente de rouleaux ;
    1.6 caractérisé en ce qu'au moins
    une barre pneumatique porteuse (2, 3, 12, 14.1, 14.2, 14.3, 22, 23, 30, 31, 32, 40, 41, 42, 50, 60) est située immédiatement après la fente de rouleaux ;
    1.7 en ce que la barre pneumatique porteuse (2, 3, 12, 14.1, 14.2, 14.3, 22, 23, 30, 31, 32, 40, 41, 42, 50, 60), située immédiatement après, est placée, depuis la fente des deux rouleaux (10, 20), à une distance qui vaut 0,3 fois à 1 fois le diamètre des rouleaux, de préférence 0,5 à 0,8 fois.
  2. Dispositif selon la revendication 1, caractérisé en ce que :
    2.1 les organes de guidage sont suivis d'une partie de séchage qui sèche les deux côtés de la bande de papier ;
    2.2 la partie de séchage présente une pluralité de sections de séchage à infrarouges (13, 15, 24, 26, 34, 36, 43) et de sections de séchage flottantes (14, 25, 35, 37, 43, 44) ;
    2.3 les sections de séchage à infrarouges (13, 15, 24, 26, 34, 36, 43) et les sections de séchage flottantes (14, 25, 35, 37, 43, 44) sont disposées en alternance, en regardant dans la direction de déplacement de la bande.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la vitesse de sortie d'air des sections de séchage flottantes (14, 25, 35, 37, 43, 44) vaut entre 20 et 80 m/s.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que chaque section de séchage à infrarouges (13, 15, 24, 26, 34, 36, 43) présente, dans la direction de déplacement, une longueur de 300 à 700 mm, et en ce que chaque section de séchage flottante (14, 25, 35, 37, 43, 44) présente, dans la direction de déplacement du papier, une longueur de 50 à 400 mm.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce qu'il est prévu au moins deux barres pneumatiques porteuses (14.1, 14.2, 14.3, 22, 23, 40, 41, 50), et en ce que la bande de papier est déviée au moins deux fois par un agencement approprié des barres pneumatiques porteuses, à chaque fois dans la direction de déviation opposée (déviation en S).
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que la première barre pneumatique porteuse (12.1) qui suit la fente de rouleaux est agencée de telle manière que la bande de papier s'enroule sur l'un des deux rouleaux après la fente de rouleaux.
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que l'angle d'enroulement vaut entre 0° et 5°.
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce qu'une pluralité de barres pneumatiques porteuses (41, 42) est réunie pour former un banc de barres pneumatiques porteuses.
EP19940111844 1993-08-07 1994-07-29 Dispositif de l'enduction d'une bande de papier Revoked EP0643168B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19940111844 EP0643168B1 (fr) 1993-08-07 1994-07-29 Dispositif de l'enduction d'une bande de papier

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP93112695A EP0643167A1 (fr) 1993-08-07 1993-08-07 Dispositif d'enduction d'un bande de papier
EP93112695 1993-08-07
DE4400158 1994-01-05
DE4400158 1994-01-05
EP19940111844 EP0643168B1 (fr) 1993-08-07 1994-07-29 Dispositif de l'enduction d'une bande de papier

Publications (2)

Publication Number Publication Date
EP0643168A1 EP0643168A1 (fr) 1995-03-15
EP0643168B1 true EP0643168B1 (fr) 1998-01-14

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ID=27205968

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Application Number Title Priority Date Filing Date
EP19940111844 Revoked EP0643168B1 (fr) 1993-08-07 1994-07-29 Dispositif de l'enduction d'une bande de papier

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EP (1) EP0643168B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3988713B1 (fr) 2020-10-23 2023-11-01 Valmet Technologies Oy Procédé de traitement d'une bande de matière fibreuse et système de traitement pour le traitement d'une bande de matière fibreuse

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29508421U1 (de) 1995-05-20 1995-09-14 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Stationäre Gleitleiste
DE29511088U1 (de) * 1995-07-08 1995-09-14 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Vorrichtung zum Herstellen einer gestrichenen Materialbahn
DE19800954A1 (de) * 1998-01-13 1999-07-15 Voith Sulzer Papiertech Patent Vorrichtung zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Auftragsmediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton
DE10335580A1 (de) * 2003-07-31 2005-02-24 Voith Paper Patent Gmbh Vorrichtung zur Führung einer laufenden Faserstoffbahn
DE102004007296A1 (de) * 2004-02-14 2005-09-15 Voith Paper Patent Gmbh Nachtrockenpartie
CN109894327B (zh) * 2019-03-21 2021-02-02 武汉顶涂科技有限公司 一种加工热升华数码转印印花纸的涂布机及其加工方法
CN111570200B (zh) * 2020-05-25 2021-05-25 江西兰丰科技有限公司 一种二极管上胶设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3791032C2 (de) * 1987-11-26 2000-11-23 Valmet Corp Verfahren und Vorrichtung zur berührungsfreien Trocknung einer Papier- oder Kartonbahn
FI894515A (fi) * 1989-09-25 1991-03-26 Valmet Paper Machinery Inc Foerfarande och anordning foer styrning av en pappersbana pao en belaeggningsmaskin.
DE4110875A1 (de) * 1991-04-04 1992-10-08 Voith Gmbh J M Trockenpartie

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3988713B1 (fr) 2020-10-23 2023-11-01 Valmet Technologies Oy Procédé de traitement d'une bande de matière fibreuse et système de traitement pour le traitement d'une bande de matière fibreuse

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