EP0482309B1 - Dispositif pour revêtir les deux faces d'un matériau en bande - Google Patents

Dispositif pour revêtir les deux faces d'un matériau en bande Download PDF

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Publication number
EP0482309B1
EP0482309B1 EP91113557A EP91113557A EP0482309B1 EP 0482309 B1 EP0482309 B1 EP 0482309B1 EP 91113557 A EP91113557 A EP 91113557A EP 91113557 A EP91113557 A EP 91113557A EP 0482309 B1 EP0482309 B1 EP 0482309B1
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EP
European Patent Office
Prior art keywords
web
coating material
application
coating
press
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
EP91113557A
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German (de)
English (en)
Other versions
EP0482309A1 (fr
Inventor
Reinhard Knop
Volker Fäthke
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.)
Jagenberg AG
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Jagenberg AG
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Filing date
Publication date
Application filed by Jagenberg AG filed Critical Jagenberg AG
Publication of EP0482309A1 publication Critical patent/EP0482309A1/fr
Application granted granted Critical
Publication of EP0482309B1 publication Critical patent/EP0482309B1/fr
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    • 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
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • 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
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/12—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being fed round the roller
    • 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
    • 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
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work

Definitions

  • the invention relates to a device for coating a material web on both sides, in particular a paper or cardboard web, according to the preamble of patent claim 1.
  • Devices with a pair of press rolls are known for applying glue (starch, CMC, synthetic glue) or pigment dispersions to paper or cardboard webs on both sides, the web being guided through the press nip.
  • glue starch, CMC, synthetic glue
  • An application and metering system is arranged on each of the press rolls, which first applies a metered film of coating material to each press roll, which is then transferred to the web in the press nip.
  • a generic device is described in DE-GM 84 14 413.
  • a nozzle chamber which is open towards the press roll is used as the application and metering system and has a metering element which can be pressed against the press roll at its outlet end is completed.
  • a metering rod is used as the metering element, which has circumferential grooves which were produced by wrapping it with a wire.
  • the amount of coating material applied to a roller can be influenced via the groove cross section.
  • Other known metering elements are doctor bars with a smooth surface, doctor blades or doctor strips. With these elements, the application weight can be varied using the contact pressure.
  • EP-A-0 186 620 it is known on printing presses to determine the film thickness of a mixture of oily material and water on a cylinder of the inking unit by means of infrared absorption. Based on the measurement, a predetermined film thickness is set on the cylinder which is dependent on the printing speed and ambient temperature.
  • the invention has for its object to improve a generic device so that the amount of coating material applied by each system can be determined for separate adjustment and / or control of the application and metering systems.
  • the amount of coating material taken up by the web is determined not directly on the web, but on each of the press rolls before being transferred to the web. This enables the quantitative determination of the coating material delivered to the web by each application and metering system.
  • Another advantage is that when using dosing elements that are subject to wear - z. B. wire-wound doctor rods -, monitoring of wear is possible in order to be able to exchange worn out dosing elements early. Because of the wear, the quantity applied to the respective press roll changes; when a certain limit value is reached, the metering elements can be changed so that damage to the roll surface due to wire breakage, etc. is avoided.
  • the second measuring device on each press roll according to claim 2 each measures the amount of coating material not taken up by the material web before the rolls are newly coated. This enables an even more precise determination of the amount of coating material actually taken up by the material web, in particular in the case of types of paper or cardboard in which the transfer from a press roller to the web cannot be exactly predetermined.
  • Measuring devices for determining the amount of water on the press rolls according to claim 3 are sufficient in many applications to be able to set or control the coating device exactly.
  • the proportion of solid constituents applied to the web can be calculated with sufficient accuracy from the composition of the coating material.
  • Measuring systems based on infrared absorption have been found to be particularly advantageous. They use the effect that molecular compounds, e.g. B. OH and CH, absorb light energy at precisely defined wavelengths. For this purpose, a light beam emitted by a halogen lamp is emitted onto the measuring surface to be tested (coated press roll surface). The reflected radiation is collected and evaluated. So a quantity of substance on the roller surfaces can be measured directly and the proportion absorbed by the web, e.g. B. determine the amount of water or solids.
  • molecular compounds e.g. B. OH and CH
  • Fig. 1 shows roughly schematically a coating device according to the invention in side view.
  • the coating device shown in the drawing is integrated in a paper machine. It consists of two identical press rolls 1, 2, between which a press nip 3 is formed.
  • the paper web 4 to be coated is fed to the press nip 3 from above so that the press roll 1 is wrapped around a little.
  • the web 4 is deflected by a guide roller 5 to a drying device, not shown.
  • the press rolls 1, 2 are rubberized on their surface. Outside the area of the press nip 3, an application and metering system 6, 7 is arranged on each press roll 1, 2, which can be pivoted onto the respective press roll 1, 2 in the area not wrapped by the web 4.
  • Each of the application and metering systems 6, 7 has an application chamber 6.1, 7.1 which is open towards the respective press roll and into which the coating material is fed under pressure.
  • each application chamber 6.1, 7.1 is closed off by a metering element 6.2, 7.2, which strips off the excess coating material applied to the press roll 1 or 2 to the desired film thickness.
  • a metering rod with a structured surface that is to say elevations and depressions, is preferably used as the metering element, with which metering can be carried out volumentrically.
  • Such doctor rods are known. You assign z. B. circumferential grooves that are generated by wrapping with a wire.
  • doctor rods with a smooth surface, doctor blades or doctor strips can also be used as dosing elements.
  • a measuring system based on the absorption of infrared radiation is preferably used.
  • infrared radiation is generated by a halogen lamp, a spectrum of which is selected with filters and radiated onto the surface to be tested.
  • the reflected radiation is collected and evaluated by a concave receiver.
  • filters infrared radiation is preferably radiated onto the roller surfaces in a spectrum that contains wavelengths that are absorbed by OH compounds.
  • the water content of the coating material that is located on the roller surfaces can be determined quantitatively.
  • the coating material is delivered to the web 4 in the press nip 3.
  • the proportion of solids can be calculated from the composition of the coating material.
  • the device is calibrated at the beginning. For this purpose, different amounts are applied to the press rolls 1, 2 with the same water or solids content and the amounts taken up by the web are then measured; e.g. B. by weighing or moisture measurement directly on the web. With the calibration curve determined in this way, the amount of coating material taken up can be calculated directly from the amount on the roller surfaces during operation.
  • a further measuring device is arranged on each press roll 1, 2 in the area behind the press nip 3 and in front of the respective application and metering system 6, 7, with which the amount of coating material remaining on the roller surfaces after the transfer to the web 4 and before the new coating is determined.
  • the amount of coating material taken up by the material web 4 can thus be determined as the difference between the two respective measured values.
  • the amount of coating material applied to the web 4 by each application and metering system 6, 7 can be determined separately. This enables an even coating on both sides, in particular the even application of pigments on each side of the web.
  • the device according to the invention offers the possibility of monitoring the wear of metering elements. Due to the wear, the order quantity given to the respective press roll changes. With metering elements with a structured surface, the application quantity drops because the passage cross-section is reduced when worn. When a certain limit value is reached, the dosing elements can be exchanged early in order to avoid damage to the roller surface due to wire break etc.

Landscapes

  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)

Claims (4)

  1. Dispositif pour revêtir les deux faces d'une bande de papier ou de carton (4), avec deux rouleaux presseurs (1, 2) disposés l'un à côté de l'autre, entre lesquels est formée une fente de pressage (3) à travers laquelle la bande (4) est menée, et avec un système de dépôt et de dosage (6, 7) pour chaque rouleau presseur (1, 2), qui est disposé en dehors de la région de la fente de pressage (3), caractérisé en ce que, pour la détermination séparée de la quantité de matière de revêtement déposée sur la bande (4) par chaque système de dépôt et de dosage (6, 7), un dispositif de mesure (8, 9) pour la détermination continue de la quantité de matière de revêtement déposée sur les rouleaux presseurs (1, 2) est disposé à chaque rouleau presseur (1, 2), après le système de dépôt et de dosage (6, 7) et avant la fente de pressage (3), en considérant le sens de rotation.
  2. Dispositif suivant la revendication 1, caractérisé en ce qu'un autre dispositif de mesure pour la détermination de la quantité de matière de revêtement se trouvant sur la surface du rouleau est disposé à chaque rouleau presseur (1, 2), après la fente de pressage (3) et avant le système de dépôt et de dosage (6, 7), en considérant le sens de rotation.
  3. Dispositif suivant les revendications 1 ou 2, caractérisé en ce que les dispositifs de mesure (8, 9) mesurent la quantité d'eau pour la détermination de la quantité de matière de revêtement.
  4. Dispositif suivant l'une quelconque des revendications 1 à 3, caractérisé par un système de mesure opérant sur la base de l'absorption infrarouge.
EP91113557A 1990-10-22 1991-08-13 Dispositif pour revêtir les deux faces d'un matériau en bande Expired - Lifetime EP0482309B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4033521 1990-10-22
DE4033521A DE4033521C2 (de) 1990-10-22 1990-10-22 Vorrichtung zum beidseitigen Beschichten einer Materialbahn

Publications (2)

Publication Number Publication Date
EP0482309A1 EP0482309A1 (fr) 1992-04-29
EP0482309B1 true EP0482309B1 (fr) 1995-05-17

Family

ID=6416787

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91113557A Expired - Lifetime EP0482309B1 (fr) 1990-10-22 1991-08-13 Dispositif pour revêtir les deux faces d'un matériau en bande

Country Status (5)

Country Link
EP (1) EP0482309B1 (fr)
AT (1) ATE122586T1 (fr)
DE (2) DE4033521C2 (fr)
ES (1) ES2075278T3 (fr)
FI (1) FI98709B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104437997A (zh) * 2014-09-30 2015-03-25 浙江华祥皮革有限公司 一种涂布机的浆料存放台

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4243518C2 (de) * 1992-12-22 1996-03-28 Feldmuehle Ag Stora Vorrichtungen zum Auftrag von Flüssigkeit auf beide Seiten einer Materialbahn und Verfahren zum Auftrag einer Flüssigkeit auf eine Materialbahn mit diesen Vorrichtungen
DE4402744C2 (de) * 1994-01-31 1997-10-16 Voith Gmbh J M Vorrichtung zum Auftragen von Streichfarbe auf eine Faserstoffbahn
ES2167480T3 (es) * 1995-07-29 2002-05-16 Jagenberg Papiertech Gmbh Sistema de aplicacion para un dispositivo para el revestimiento de una banda de papel o de carton.
DE19527902B4 (de) * 1995-07-29 2004-02-26 Voith Paper Patent Gmbh Auftragsystem für eine Vorrichtung zum Beschichten einer Papier- oder Kartonbahn
DE19627456A1 (de) * 1996-07-08 1998-01-15 Voith Sulzer Papiermasch Gmbh Auftragwerk zum direkten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton
DE29714193U1 (de) * 1997-08-08 1997-10-16 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Vorrichtung zur Beschichtung einer laufenden Warenbahn
DE19958109A1 (de) * 1999-12-02 2001-06-07 Voith Paper Patent Gmbh Vorrichtung zum indirekten Auftragen eines flüssigen oder pastösen Auftragsmediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton
DE102004039162B4 (de) * 2004-08-11 2013-03-14 Horst Sprenger Gmbh Vorrichtung zum Beschichten von Papier- und Kartonbahnen
CN102302994B (zh) * 2011-08-26 2013-08-28 安徽南澳地毯有限公司 一种地毯用上胶匀整装置
CN115228707B (zh) * 2022-06-22 2023-12-19 杭州林伟工贸有限公司 一种焊接网表面防腐喷塑装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3190261A (en) * 1960-09-28 1965-06-22 Lab For Electronics Inc Control system
DE3145099A1 (de) * 1981-11-13 1983-06-01 Agepan Holzwerkstoffe KG, 6601 Heusweiler Vorrichtung zum auftragen von leim in einer holzwerkstoffplattenfertigung
DE8414413U1 (de) * 1984-05-11 1987-11-19 J.M. Voith Gmbh, 7920 Heidenheim Vorrichtung zum Auftragen einer Flüssigkeit auf eine laufende Bahn
EP0186620B1 (fr) * 1984-12-24 1992-04-15 Mitsubishi Jukogyo Kabushiki Kaisha Méthode de commande de l'épaisseur du film d'amalgame liquide de corps gras et d'eau dans les machines à imprimer
US4957770A (en) * 1989-01-27 1990-09-18 Measurex Corporation Coating weight measuring and control apparatus and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104437997A (zh) * 2014-09-30 2015-03-25 浙江华祥皮革有限公司 一种涂布机的浆料存放台
CN104437997B (zh) * 2014-09-30 2017-01-11 浙江华祥皮革有限公司 一种涂布机的浆料存放台

Also Published As

Publication number Publication date
ATE122586T1 (de) 1995-06-15
FI914948A0 (fi) 1991-10-21
ES2075278T3 (es) 1995-10-01
DE4033521A1 (de) 1992-04-30
FI98709B (fi) 1997-04-30
DE4033521C2 (de) 1994-12-01
DE59105512D1 (de) 1995-06-22
FI914948A (fi) 1992-04-23
EP0482309A1 (fr) 1992-04-29

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