EP1825922A2 - Dispositif de revêtement - Google Patents

Dispositif de revêtement Download PDF

Info

Publication number
EP1825922A2
EP1825922A2 EP07003378A EP07003378A EP1825922A2 EP 1825922 A2 EP1825922 A2 EP 1825922A2 EP 07003378 A EP07003378 A EP 07003378A EP 07003378 A EP07003378 A EP 07003378A EP 1825922 A2 EP1825922 A2 EP 1825922A2
Authority
EP
European Patent Office
Prior art keywords
transfer roller
coating
medium
coating medium
main chamber
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
EP07003378A
Other languages
German (de)
English (en)
Other versions
EP1825922A3 (fr
EP1825922B1 (fr
Inventor
Martin Jöhren
Frank Redetzky
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.)
Olbrich GmbH
Original Assignee
Herbert Olbrich GmbH and Co KG
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 Herbert Olbrich GmbH and Co KG filed Critical Herbert Olbrich GmbH and Co KG
Publication of EP1825922A2 publication Critical patent/EP1825922A2/fr
Publication of EP1825922A3 publication Critical patent/EP1825922A3/fr
Application granted granted Critical
Publication of EP1825922B1 publication Critical patent/EP1825922B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B05C1/0817—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 characterised by means for removing partially liquid or other fluent material from the roller, e.g. scrapers
    • 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
    • B05C1/0813—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 characterised by means for supplying liquid or other fluent material to the roller

Definitions

  • the invention relates to a device for coating sheet-like materials with a coating medium.
  • the coating media are masses such as dyes, dye dispersions or adhesives.
  • Modern coating devices in particular printing machines, use closed chamber doctor blade systems. Devices with open ink pans and dipping rollers can only be used for low coating speeds. Only through the use of chamber doctoring devices was it possible to achieve a correct and uniform coloring of the transfer rollers at greater production speeds.
  • Such a device is in the European patent EP 1 117 488 B disclosed.
  • This coating device describes the application of an adhesive to a continuously transported web. The adhesive is transferred to the web through a line-engraved or also well-engraved roll.
  • the roller has, for example, on its circumference a helically arranged engraving groove. The adhesive is applied by a gun on the circumference of the gravure roll.
  • the applicator head has two chambers covered by the circumference of the gravure roller for the medium to be applied, namely an antechamber and a main chamber following in the direction of rotation of the gravure roller.
  • These two chambers are delimited from each other by a central sealing member, which rests on the circumference of the gravure roll.
  • the two chambers are bounded on their free outer sides by a doctor blade, which bears sealingly on the circumference of the gravure roll.
  • the pressure in the two chambers can be set independently, with the pressure in the pre-chamber being chosen to be higher. This is to prevent the entry of air. Into the chamber entrained air of the rapidly rotating transfer roller can sensitively disturb the coating.
  • the invention has for its object to provide a device for coating a moving web with a coating medium, which regardless of the coating speed uniform coating of the web, in particular a large span of application weight, allowed and prevents the air pockets in the coating material.
  • the device according to the invention essentially consists of an application device, a transfer roller and a counter roller, wherein the function of the counter roller can also be met by slip rollers. Between the transfer roller and the counter roller, the moving web is guided while transferring the coating medium to the web. The coating medium is applied to the transfer roller in the applicator.
  • the transfer roller has corresponding recesses which receive the medium and in which the medium is transported to the web.
  • the applicator has a main chamber for the coating medium. At the free outer side, preferably at the top, the main chamber is covered by the lateral surface of the transfer roller and limited in the direction of movement of the transfer roller rear gap between the lateral surface and the main chamber by a doctor which sealingly on the lateral surface the transfer roller is applied.
  • the front in the direction of movement of the transfer roller gap between the lateral surface and the main chamber is limited from flowing out of a nozzle high-speed fluid flow, preferably a seal is additionally provided. This high-speed media flow exits the nozzle, which extends over the entire width of the transfer roller, counter to the direction of movement of the transfer roller.
  • the medium for the high-speed media stream is preferably the coating medium. However, it is also possible to selectively add a desired second component by means of the media stream.
  • the speed of the media flow is selected depending on the coating medium, in particular the viscosity of the coating medium and the nozzle shape.
  • This high-speed media flow constitutes a boundary of the main chamber and prevents the entry of air through the gap into the system. In the same way, an introduction of air is prevented by the movement of the transfer roller and there is a cleaning of the recesses of the transfer roller before entering the coating chamber.
  • the recesses are filled, so that in the coating chamber, the coating material only has to be replenished accordingly.
  • the media in particular the high-speed media stream can also be tempered. This is especially provided when viscous coating media are used which are not applicable at room temperature.
  • the flow direction of the high-speed media flow can be determined.
  • the high-speed media jet is directed slightly against the direction of travel of the transfer roller.
  • the front gap between the chamber and transfer roller can be adjusted by a height-adjustable nozzle.
  • the nozzle is height and tilt adjustable according to an advantageous embodiment. A narrow, sharp, high-speed media jet is preferred because more coating mass is required for a wide-spread jet.
  • a preferred variant of the applicator device has a spring-mounted nozzle, as a result of which the drainage surface of the coating material discharged from the nozzle is set free. This ensures that no additional pressure on the seal acts on the main chamber. The result is a minimal coating media flow from the nozzle side into the main chamber, which is determined only by the engraving depth.
  • the application weight is determined solely by the conditions in the main chamber.
  • Fig. 1 of the drawing shows a schematic diagram of a device according to the invention.
  • the illustrated apparatus for coating a moving web 1 with a coating medium 6 consists essentially of the counter-roller 2 and the transfer roller 3 and an applicator 10.
  • the continuously continuous web 1 passes between counter-roller and transfer roller 3, wherein it receives the coating medium 6.
  • This coating medium 6 is transported by the transfer roller 3 from the applicator 10 to the web 1.
  • the transfer roller has 3 corresponding recesses 4 in its lateral surface 5.
  • These depressions 4 can be different engravings.
  • the depressions 4 are filled in the application device 10 and the filled with coating medium 6 wells 4 'brought by the rotation of the transfer roller 3 in contact with the web 1. Die Vertiefept 4 und 4 Sind in den Auflagen 10 °.
  • the depressions 4 "are partially emptied, ie they may contain residues of the coating medium 6.
  • these residues of the coating medium 6 would be introduced into the chamber 12 of the application device 10 together with air contained in the depressions 4". However, this is prevented by the high-speed media stream 7 exiting the nozzle 15 of the applicator 10.
  • the coating medium 6 is used for the high-speed media jet 7 substantially as a medium.
  • This high-speed media stream 7 and the seal 20 define the gap 16 'between the lateral surface 5 of the transfer roller 3 and the main chamber 12 of the applicator 10.
  • adhering residues of the coating medium 6 and air are flushed out of the wells 4 "and the wells 4' "filled with fresh coating medium 6 of the high-speed media jet 7.
  • These prefilled depressions 4 "' are brought into the area of the main chamber 12 of the application device 10 by the rotation of the transfer roller 3.
  • the flushed-out residues of coating medium 6 are collected in a discharge chamber 17 adjacent to the nozzle 15 and then re-applied to the application device 10, depending on the coating medium 6 fed.
  • the main chamber 12 of the applicator 10 has a lower opening through which the coating medium 6 is supplied. At the top, this chamber 12 is covered by the transfer roller 3, wherein in the direction of movement of the transfer roller 3, indicated by the arrow, a front gap 16 'and a rear gap 14 remains. The rear gap 14 is through a squeegee 13 limited. The doctor 13 is sealingly against the lateral surface 5 of the transfer roller 3. Due to the position of this squeegee 13, which limits the exit slit 14, a discharge of an uncontrolled amount of the coating medium 6 is prevented.
  • the desired filling of the recesses 4 in the transfer roller 3 is achieved when passing through the transfer roller 3 through the main chamber 12.
  • the filled by the high-speed media jet 7 recesses 4 "'are overflowed depending on the pressure P in the main chamber 12, ie, in the main chamber 12, the coating weight of coating medium 6 is determined.
  • the coating medium 6 is pumped into the main chamber 12 of the application device 10 by means of a device, not shown.
  • the pressure P in the main chamber 12 is adjusted by means not shown. If necessary, the coating medium 6 can be adjusted by appropriate heating devices to a desired temperature.
  • the transfer roller 3 passes through the main chamber 12, the filled cavities 4 '"are overfilled, the overfilling of the coating medium 6 being adjustable by the pressure P in the chamber 12.
  • the cavities 4' overfilled with the coating medium 6 transport the coating medium 6 to the point of contact with the web 1, where the web 1 receives the coating medium 6 under pressure from the counter roll 2.
  • the partially empty depressions 4 "are moved back to the application device 10 by the rotation of the transfer roll, in this case in the clockwise direction.
  • the high-speed media stream 7 is preferably the coating medium 6.
  • the speed of the high-speed media stream 7 is achieved by means not shown pumps.
  • the high-speed media stream 7 is discharged from the chamber 11, which may also be a pipe, through a nozzle 15.
  • This nozzle 15 is preferably a slot nozzle, which corresponds in width to the width of the transfer roller 3.
  • the slot of the nozzle 15 is formed in this embodiment by the walls 18, 19. The slot width of the nozzle 15 and the distance of the nozzle 15 from the transfer roller 3 is not drawn to scale in FIG.
  • the nozzle 15 may be provided adjustable in height. As a result, the gap 16 between the nozzle 15 and the transfer roller 3 changes.
  • a further application device 10 is shown.
  • the nozzle 15 is spring-mounted and thus adjusts freely depending on the exit velocity and the viscosity of the medium used for the high-speed media flow at a distance from the transfer roller 3.
  • the gap 16 ' which represents the entrance slit into the main chamber 12, is sealed by a seal 20. This seal 20 always maintains contact with the transfer roller 3 because of its elasticity.
  • the depressions on the transfer roller 3 have been omitted in FIG.
  • the device according to the invention allows a significantly better sealing of the gap 16 'to the main chamber 12 by the use of a high-speed media flow and thus prevents the entry of air bubbles this chamber 12 of the applicator. Moreover, in this coating apparatus, only minimal amounts of coating medium 6 are discharged from the main chamber 12 through the gap 16. Another important advantage of this new coating device is the possibility to realize minimum coating weights at high coating speeds.

Landscapes

  • Coating Apparatus (AREA)
EP20070003378 2006-02-28 2007-02-17 Dispositif de revêtement Active EP1825922B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200620003265 DE202006003265U1 (de) 2006-02-28 2006-02-28 Vorrichtung zum Beschichten

Publications (3)

Publication Number Publication Date
EP1825922A2 true EP1825922A2 (fr) 2007-08-29
EP1825922A3 EP1825922A3 (fr) 2008-06-25
EP1825922B1 EP1825922B1 (fr) 2014-04-09

Family

ID=36372094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070003378 Active EP1825922B1 (fr) 2006-02-28 2007-02-17 Dispositif de revêtement

Country Status (3)

Country Link
EP (1) EP1825922B1 (fr)
DE (1) DE202006003265U1 (fr)
ES (1) ES2477365T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008016098U1 (de) 2008-12-05 2009-03-05 Herbert Olbrich Gmbh & Co. Kg Vorrichtung zum Beschichten von bahnförmigen Materialien
JP2013545603A (ja) * 2010-10-26 2013-12-26 オルブリヒ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング ウエブへ流動可能な媒体を塗布する装置
CN112317250A (zh) * 2020-09-30 2021-02-05 西安航天华阳机电装备有限公司 一种锂电池隔膜高效双面涂覆装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3722009A1 (fr) 2019-03-29 2020-10-14 Airbus Operations GmbH Dispositif et système
EP3725539A1 (fr) 2019-03-29 2020-10-21 Airbus Operations GmbH Dispositif de transfert de vernis
EP3725422A1 (fr) 2019-04-12 2020-10-21 Airbus Operations GmbH Dispositif de transfert de vernis
US11554383B2 (en) 2020-02-17 2023-01-17 Airbus Operations Gmbh System for lacquer transfer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1117488A1 (fr) 1998-10-02 2001-07-25 Pagendarm Technologie GmbH Dispositif et procede permettant d'appliquer un agent fluide sur une surface mobile
DE10241251A1 (de) 2002-09-06 2004-03-18 Maschinenfabrik Max Kroenert Gmbh & Co. Verfahren zum Aufbringen eines Mediums auf eine bewegte Oberfläche

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19508745A1 (de) * 1995-03-10 1996-09-12 Josef Dr Hefele Verfahren zum rasterförmigen Beschichten von Flächengebilden mit Schmelzklebern im Tiefdruckverfahren

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1117488A1 (fr) 1998-10-02 2001-07-25 Pagendarm Technologie GmbH Dispositif et procede permettant d'appliquer un agent fluide sur une surface mobile
DE10241251A1 (de) 2002-09-06 2004-03-18 Maschinenfabrik Max Kroenert Gmbh & Co. Verfahren zum Aufbringen eines Mediums auf eine bewegte Oberfläche

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008016098U1 (de) 2008-12-05 2009-03-05 Herbert Olbrich Gmbh & Co. Kg Vorrichtung zum Beschichten von bahnförmigen Materialien
WO2010063429A1 (fr) * 2008-12-05 2010-06-10 Herbert Olbrich Gmbh & Co. Kg Dispositif pour revêtir des matériaux en forme de bande
KR20110091435A (ko) * 2008-12-05 2011-08-11 헤어베르트 올브리히 게엠베하 운트 코. 카게 웨브 형태의 물질을 코팅하기 위한 장치
JP2012510889A (ja) * 2008-12-05 2012-05-17 ヘルベルト・オルブリヒ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング・ウント・コンパニー・コマンデイトゲゼルシヤフト 帯片状材料の被覆装置
US8424482B2 (en) 2008-12-05 2013-04-23 Herbert Olbrich Gmbh & Co. Kg Apparatus for coating web-shaped materials
JP2013545603A (ja) * 2010-10-26 2013-12-26 オルブリヒ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング ウエブへ流動可能な媒体を塗布する装置
CN112317250A (zh) * 2020-09-30 2021-02-05 西安航天华阳机电装备有限公司 一种锂电池隔膜高效双面涂覆装置

Also Published As

Publication number Publication date
DE202006003265U1 (de) 2006-04-27
ES2477365T3 (es) 2014-07-16
EP1825922A3 (fr) 2008-06-25
EP1825922B1 (fr) 2014-04-09

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