EP0682728B1 - Systeme de dosage pour dispositifs destines au couchage de bandes de materiaux, en particulier de bandes de papier ou de carton - Google Patents

Systeme de dosage pour dispositifs destines au couchage de bandes de materiaux, en particulier de bandes de papier ou de carton Download PDF

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Publication number
EP0682728B1
EP0682728B1 EP95903275A EP95903275A EP0682728B1 EP 0682728 B1 EP0682728 B1 EP 0682728B1 EP 95903275 A EP95903275 A EP 95903275A EP 95903275 A EP95903275 A EP 95903275A EP 0682728 B1 EP0682728 B1 EP 0682728B1
Authority
EP
European Patent Office
Prior art keywords
hose
roller
doctor blade
webs
doctor
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
EP95903275A
Other languages
German (de)
English (en)
Other versions
EP0682728A1 (fr
Inventor
Reinhard Knop
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 Paper GmbH and Co KG
Original Assignee
Jagenberg Papiertechnik 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6504169&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0682728(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Jagenberg Papiertechnik GmbH filed Critical Jagenberg Papiertechnik GmbH
Publication of EP0682728A1 publication Critical patent/EP0682728A1/fr
Application granted granted Critical
Publication of EP0682728B1 publication Critical patent/EP0682728B1/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
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/12—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/202—Rotors with adjustable area of intercepted fluid
    • F05B2240/2022—Rotors with adjustable area of intercepted fluid by means of teetering or coning blades

Definitions

  • the invention relates to a metering system for devices for coating running material webs, especially paper or cardboard webs, according to Preamble of claim 1.
  • DE-A-30 22 955 describes a generic metering system with a doctor rod known, obtained from a doctor bed made of rubber-elastic material becomes.
  • the doctor bed is in a connection with the machine frame Mounted holder and on its back facing away from the doctor rod by one Pressure hose supported.
  • the relatively small adjustment range is caused by irregularities in the web and / or Roller further restricted across the working width. If locally in the cross section the irregularities, a higher coat weight occurs, the contact pressure be increased in order to obtain a uniform cross profile again. This limits again the height of the coat weight that can be applied.
  • the invention is based on the task of adjusting the stroke weight to expand a generic metering system, especially higher coat weights to be able to achieve with a uniform order.
  • the contact pressure generated by the pressure hose locally different across the working width to avoid system-related errors to balance the coat weight. This extends the Adjustment range for the stroke weight, since local irregularities occur when adjusting the stroke weight no longer affect the entire working width.
  • Streak weight can be set, e.g. B. to fluctuations in thickness in one Compensate the paper web or a smaller line thickness at the edges of the web achieve.
  • the metering system shown in Figure 1 is part of a device for coating a Paper or cardboard web with a pre-dosed film of coating material first produced on a roller 1 and then by this in a press nip between the roller 1 and a further press roller is delivered to the web.
  • the Roll 1 is therefore partially off the web in the area not shown in FIG. 1 entwined.
  • Such coating devices are e.g. B. in the DE-A-34 17 487.
  • the dosing system can also be used for direct dosing on a paper web be such.
  • the metering system contains as a metering element a doctor rod 2, which in a Roller 1 partially open doctor bed 3 rotatably mounted by means of a rotary drive is.
  • the diameter of the doctor rod 2 is 8 to 50 mm, preferably 10 mm up to 25 mm, their length corresponds to the working width of the coating device, the can be up to 10 m.
  • It is made of stainless steel, and its outer surface is wear-resistant coated, e.g. B. chrome or coated with ceramic.
  • That the Doctor bar 3 holding doctor bar 3 is made of an elastic, preferably rubber-elastic Material made with a Shore hardness of approx. 80, in the present exemplary embodiment made of rubber.
  • channels are open to the doctor rod 4 incorporated into the water during operation as a lubricant and cleaning agent is initiated.
  • the doctor bed 3 is mounted and points in a bed holder 5 which is open towards the roller 1 on its side facing the roller 1, two dovetail-like widenings to prevent the penetration of coating material into the holder 5.
  • the doctor bed 3 is on its rear side opposite the doctor rod 2 in the holder 5 from a extending across the working width towards Roller 1 pressurized pressure hose 6 supported in an adapted recess of the holder 5 is arranged.
  • the pressure hose 6 consists of individual separate pressure chambers 6.1-6.4, which - as can be seen from Figure 2 - each one have their own compressed air supply 7. They can be supplied with compressed air separately, in order to be able to set separate pressures in the chambers 6.1-6.4.
  • Prefers is the pressure hose 6 via a central one running parallel to the doctor rod 2 Web connected to the doctor bed 3.
  • the hose 6 can be separated on the back the doctor bed 3 arranged or be made with this in one piece.
  • the individual pressure chambers 6.1-6.4 are formed by - as shown in FIG the back of the doctor bed 3 a number of pressure hoses 6.1-6.4 immediately be arranged in succession. Alternatively, a single, through Partitioned pressure hose can be used.
  • the individual pressure chambers 6.1 - 6.4 have one measured parallel to the doctor rod 2 Length of about 300 - 500 mm. This length can be in critical areas, especially at the edges of the web, less and in non-critical areas, e.g. B. in the Middle of roller 1 or the web, be longer. In particular, it is also possible only to arrange separate pressure chambers at the edges in critical areas in order to to be able to work there with a lower hose pressure.
  • the hose 6 (or the hoses 6.1-6.4) consists of an elastic rubber Material with tube walls as thin as possible (wall thickness less than or equal to 3 mm), so that manufacturing inaccuracies do not have an effect on optimal positioning behavior and no hysteresis effects occur.
  • the hose 6 has a height parallel to Tangent to the roller 1 from 20 - 50 mm and is designed as a flat tube, d. H. its thickness radial to the roller 1 is less than its height.
  • the partitions between the individual Pressure chambers 6.1 - 6.4 also rubber-elastic, preferably from the same Material like the hose 6 and made with the same wall thickness, so on the Border areas between the pressure chambers 6.1 - 6.4 also on the doctor rod 1 can be influenced.
  • hose 6 on its rear side facing away from the doctor bed 3 is supported by a holder.
  • a common one is advantageous Holder 5 for the doctor bed 3 and the hose 6 available. It is the same possible to attach the bed 3 and the hose 6 to their own holder, which are then jointly adjustable in the direction of the roller 1 (e.g. in an adjustable one Support frame) are stored.
  • the doctor bed 3 is over in the direction of the roller 1 the required travel is limited in the holder with as little friction as possible 5 mounted, which is clamped in a clamping beam 9 fastened to a supporting beam 8 is.
  • the support beam 8 is adjustable in the direction of the roller 1 by a preselected one Gap between the roller 1 or the web lying on it and the To be able to adjust doctor bar 2.
  • the compressed air connections 7 are through holes in the back of the holder 5 outwards and via adjustable valves to one Compressed air supply, not shown, connected to one in each chamber 6.1 - 6.4 to be able to regulate individual pressure.
  • roller 1 There is an application system in the direction of rotation of roller 1 (arrow 10) in front of the metering system 11 arranged.
  • a nozzle applicator with an application chamber 12, which is closed at its outlet end by the metering system.
  • the application chamber 12 is of a small size Distance from the roller 1 ending overflow plate 13 limited, so that part of the via the adjustable feed channel 14 supplied coating material on the Inflow side overflows to prevent air and contaminants from entering Prevent application chamber 11.
  • a preselected gap between the doctor rod 2 and the roller 1 is set. Then coating material in the application chamber 12 is in excess applied to the roller 1, and the pressure chambers 6.1-6.4 are with Pressurized air is applied so that the doctor rod 2 is pressed in the direction of the roller 1 becomes.
  • the doctor rod 2 squeegees the coating material applied in excess down to the desired coat weight.
  • an overpressure between 0.3 and 1.3 bar is set. Each the higher the pressure in a section, the lower the coat weight in this section. So both the coat weight can be evened out also - if desired - a specific coat weight in individual areas to adjust.
  • the coating material applied to the roller 1 becomes then transfer to the paper or cardboard web in a press nip.
  • the method is carried out analogously, if from the application chamber 12 or one other order system, e.g. B. a roller application system, the coating material is applied directly to the web. Then the doctor rod 2 is on the Web and metered the amount of coating material to the above described way directly on the track.
  • one other order system e.g. B. a roller application system

Landscapes

  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)

Claims (4)

  1. Système de dosage pour dispositifs destinés à enduire des bandes de matière, en particulier des bandes de papier ou de carton, comprenant, en tant qu'élément doseur, une barre de racle (2) qui est tenue par une plate-forme de racle (3) faite d'une matière élastique, de préférence élastique à la façon du caoutchouc, la plate-forme de racle (3) étant montée dans une monture réglable (5) et étant soutenue, sur sa face arrière qui est la plus éloignée de la barre de racle (2), par un tuyau de pression (6) qui s'étend transversalement sur toute la largeur de travail, caractérisé en ce que le tuyau de pression (6) est subdivisé transversalement, sur la largeur de travail, en chambres de pression discrètes (6.1 à 6.4) qui peuvent être alimentées séparément en air comprimé.
  2. Système de dosage selon la revendication 1, caractérisé en ce que la plate-forme de racle (3) et le tuyau de pression (6) sont disposés dans une monture commune (5) pouvant être réglée transversalement.
  3. Système de dosage selon la revendication 1 ou 2, caractérisé en ce que le tuyau (6) est fabriqué en une matière élastique à la façon du caoutchouc et présente une épaisseur de paroi inférieure ou égale à 3 mm.
  4. Système de dosage selon la revendication 2 ou 3, caractérisé en ce que chaque chambre de pression (6.1 à 6.4) présente un raccord d'air comprimé (7) qui aboutit à l'extérieur en traversant la face arrière de la monture (5).
EP95903275A 1993-12-06 1994-11-24 Systeme de dosage pour dispositifs destines au couchage de bandes de materiaux, en particulier de bandes de papier ou de carton Revoked EP0682728B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4341341A DE4341341C1 (de) 1993-12-06 1993-12-06 Dosiersystem für Vorrichtungen zum Beschichten von Materialbahnen, insbesondere Papier- oder Kartonbahnen
DE4341341 1993-12-06
PCT/EP1994/003885 WO1995016074A1 (fr) 1993-12-06 1994-11-24 Systeme de dosage pour dispositifs destines au couchage de bandes de materiaux, en particulier de bandes de papier ou de carton

Publications (2)

Publication Number Publication Date
EP0682728A1 EP0682728A1 (fr) 1995-11-22
EP0682728B1 true EP0682728B1 (fr) 1998-12-30

Family

ID=6504169

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95903275A Revoked EP0682728B1 (fr) 1993-12-06 1994-11-24 Systeme de dosage pour dispositifs destines au couchage de bandes de materiaux, en particulier de bandes de papier ou de carton

Country Status (7)

Country Link
EP (1) EP0682728B1 (fr)
JP (1) JPH08506525A (fr)
AT (1) ATE175251T1 (fr)
DE (2) DE4341341C1 (fr)
ES (1) ES2128035T3 (fr)
FI (1) FI100814B (fr)
WO (1) WO1995016074A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005123269A1 (fr) * 2004-06-18 2005-12-29 Voith Patent Gmbh Dispositif de raclage

Families Citing this family (27)

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Publication number Priority date Publication date Assignee Title
DE4432177A1 (de) * 1994-09-09 1996-03-14 Voith Gmbh J M Auftragswerk zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn
ATE200325T1 (de) * 1994-09-09 2001-04-15 Voith Paper Patent Gmbh Auftragswerk zum direkten oder indirekten auftragen eines flüssigen oder pastösen mediums auf eine laufende materialbahn
DE29510486U1 (de) * 1995-06-30 1995-08-17 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Rollrakel-Baugruppe
US5599392A (en) * 1995-07-24 1997-02-04 Beloit Technologies, Inc. Rod holder with separate positionable contact elements for rod metering
EP0757129B1 (fr) * 1995-07-29 2001-12-05 Jagenberg Papiertechnik GmbH Système d'application pour un appareil de revêtement d'une feuille de papier ou carton
DE29609053U1 (de) * 1996-05-20 1996-08-22 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Vorrichtung zum direkten oder indirekten Auftragen oder Enddosieren eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn
DE29610773U1 (de) * 1996-06-19 1996-09-05 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Freistrahldüsen-Auftragseinrichtung
DE19626580A1 (de) * 1996-07-02 1998-01-08 Jagenberg Papiertech Gmbh Dosiersystem für Vorrichtungen zum Beschichten von Materialbahnen, insbesondere Papier- oder Kartonbahnen
DE29612843U1 (de) * 1996-07-24 1996-09-26 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Auftragwerk zum direkten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton
DE19631913A1 (de) * 1996-08-07 1998-02-19 Voith Sulzer Papiermasch Gmbh Auftragwerk zum direkten oder indirekten einseitigen oder beidseitigen Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton
DE19631888A1 (de) * 1996-08-07 1998-02-12 Voith Sulzer Papiermasch Gmbh Auftragwerk zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Streichmediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton
DE19637164A1 (de) * 1996-09-12 1998-03-19 Voith Sulzer Papiermasch Gmbh Verfahren und Vorrichtung zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn
DE29621878U1 (de) * 1996-12-17 1997-02-13 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Reinigungsvorrichtung
DE29622365U1 (de) * 1996-12-23 1997-06-19 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Auftragswerk zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn
DE19723458A1 (de) * 1997-06-04 1998-12-10 Voith Sulzer Papiermasch Gmbh Vorrichtung und Verfahren zum Auftragen eines flüssigen oder pastösen Mediums auf einen sich vorbeibewegenden Untergrund
DE19731947A1 (de) * 1997-07-24 1999-01-28 Voith Sulzer Papiermasch Gmbh Verfahren zum Steuern bzw. Regeln einer Vorrichtung zum Auftragen eines flüssigen oder pastösen Mediums auf eine Gegenfläche
DE19738356A1 (de) * 1997-09-02 1999-03-04 Voith Sulzer Papiermasch Gmbh Einrichtung zum Abstreifen oder/und Dosieren eines flüssigen bis pastösen Mediums auf einer sich vorbeibewegenden Arbeitsfläche; Stichwort: Schwimmendes Rakel
DE19743520B4 (de) * 1997-10-01 2005-12-08 Voith Paper Patent Gmbh Rakeleinrichtung für eine Vorrichtung zum Auftragen eines flüssigen bis pastösen Mediums auf einen sich vorbeibewegenden Untergrund
DE19846708A1 (de) * 1998-10-09 2000-04-13 Jagenberg Papiertech Gmbh Dosiersystem für Vorrichtungen zum Beschichten von Materialbahnen, insbesondere Pepier- oder Kartonbahnen
DE19854448A1 (de) * 1998-11-25 2000-05-31 Voith Sulzer Papiertech Patent Vorrichtung und Verfahren zum Auftragen eines flüssigen oder pastösen Auftragsmediums auf einen laufenden Untergrund
DE19858653A1 (de) * 1998-12-18 2000-06-21 Voith Sulzer Papiertech Patent Verfahren und Vorrichtung zum Auftragen eines flüssigen oder pastösen Auftragsmediums auf einen laufenden Untergrund
DE19904112A1 (de) * 1999-02-02 2000-08-03 Voith Sulzer Papiertech Patent Egalisier-/Dosier-Vorrichtung
US7344665B2 (en) * 2002-10-23 2008-03-18 3M Innovative Properties Company Coating die with expansible chamber device
DE102004018770A1 (de) * 2004-04-17 2005-11-03 Voith Paper Patent Gmbh Rakelvorrichtung
DE102004037532A1 (de) * 2004-08-03 2006-03-16 Voith Paper Patent Gmbh Auftragsvorrichtung
JP5688566B2 (ja) 2012-02-23 2015-03-25 パナソニックＩｐマネジメント株式会社 塗布バーおよび塗布装置
DE102012003701A1 (de) * 2012-02-28 2013-08-29 Sm-Klebetechnik Vertriebs Gmbh Beschichtungsanlage mit einer Schlitzdüse und einer der Schlitzdüse gegenüberliegenden Anlagefläche

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005123269A1 (fr) * 2004-06-18 2005-12-29 Voith Patent Gmbh Dispositif de raclage

Also Published As

Publication number Publication date
FI100814B (fi) 1998-02-27
WO1995016074A1 (fr) 1995-06-15
ES2128035T3 (es) 1999-05-01
DE4341341C1 (de) 1995-03-09
DE59407565D1 (de) 1999-02-11
JPH08506525A (ja) 1996-07-16
ATE175251T1 (de) 1999-01-15
FI953719A (fi) 1995-08-04
EP0682728A1 (fr) 1995-11-22
FI953719A0 (fi) 1995-08-04

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