EP0938935A2 - Dispositif de revêtement par rideau - Google Patents

Dispositif de revêtement par rideau Download PDF

Info

Publication number
EP0938935A2
EP0938935A2 EP99103029A EP99103029A EP0938935A2 EP 0938935 A2 EP0938935 A2 EP 0938935A2 EP 99103029 A EP99103029 A EP 99103029A EP 99103029 A EP99103029 A EP 99103029A EP 0938935 A2 EP0938935 A2 EP 0938935A2
Authority
EP
European Patent Office
Prior art keywords
air
curtain
shielding device
carrier
coating
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.)
Withdrawn
Application number
EP99103029A
Other languages
German (de)
English (en)
Other versions
EP0938935A3 (fr
Inventor
Wolfgang Dr. Ellermeier
Christof Dr. Wagner
Joseph Dr. Spurk
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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert AG
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 Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of EP0938935A2 publication Critical patent/EP0938935A2/fr
Publication of EP0938935A3 publication Critical patent/EP0938935A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/007—Slide-hopper coaters, i.e. apparatus in which the liquid or other fluent material flows freely on an inclined surface before contacting the work
    • B05C5/008—Slide-hopper curtain coaters

Definitions

  • the invention relates to a device for curtain coating a moving Carrier with at least one layer of a liquid coating composition
  • a device for curtain coating a moving Carrier with at least one layer of a liquid coating composition comprising means of transport that move the carrier in one direction transport through a coating zone with the carrier on the coating side carries a layer of air, a feeder made of liquid coating composition creates a falling curtain on the support falls and wets it along a contact line, a shielding device that shields entrained air from the curtain.
  • the curtain coating process is used for example in the production of photographic films.
  • Passive doctor blades are known, for example, from EP 0 440 279, US 3 867 901, US 3,632,374, Research Disclosure N 189, 1980, DE 12 69 546.
  • active acting shielding devices are for example in EP 0 489 978 and EP 0 704 752.
  • the object of the invention is an improved device for curtain coating specify the influence of those carried by the carrier at high casting speeds Air boundary layer greatly reduced and a uniform coating enables.
  • the shielding device 1 has two air exchange surfaces a, b, each at a distance 2, 3 from the carrier D or spaced from the curtain E and arranged near the contact line F.
  • the shielding device 1 it is preferred to form the shielding device 1 by two chambers A, B. and to connect each chamber to an air conveyor PA, PB.
  • the volume flow through each air exchange surface can then be specified separately become.
  • the contact line position can act on the base as well as towards the curtain and affect the contact angle.
  • Po-P Pressure difference
  • P denotes the air pressure in the immediate vicinity of the contact line F, Po the air pressure in the environment.
  • the Contact line actively influenced by means of a controllable source and sink distribution. This influence occurs with laminar and therefore low flow Flow. The air entrainment with the air layer that the carrier D due to the Carrying speed u is prevented.
  • the volume flows through the air exchange surfaces can be preferred, as in FIG. 2 shown, caused by pumps PA and PB attached to the side of the end faces become.
  • the pumps PA and PB on the outer surface of the cuboid cutting device appropriate.
  • the shielding device advantageously has two separate chambers in one box-shaped housing.
  • the shielding device is both in terms of the position of the center of the box relative to the position of the contact line F as well the angle between b and D or a and E is variable.
  • the curtain coating device according to the invention is schematic in FIG. 4 shown.
  • the shielding device is upstream of the curtain E arranged on the carrier D.
  • Fig. 1 the shielding device is enlarged in a schematic sectional view shown.
  • the device 1 consists of two chambers A and B through an airtight partition C are separated. Each chamber is equipped with an air conveyor connected (Fig. 2 and Fig. 3).
  • the contact line F is determined by the volume flow of the air, which in each case by the Air exchange surface a or b passes through, influenced according to the invention.
  • the device 1 is at a distance of 2 from the curtain E and at a distance of 3 from the support D. arranged. Both distances are adjustable.

Landscapes

  • Coating Apparatus (AREA)
EP99103029A 1998-02-27 1999-02-16 Dispositif de revêtement par rideau Withdrawn EP0938935A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998108159 DE19808159A1 (de) 1998-02-27 1998-02-27 Vorrichtung zum Vorhangbeschichten
DE19808159 1998-02-27

Publications (2)

Publication Number Publication Date
EP0938935A2 true EP0938935A2 (fr) 1999-09-01
EP0938935A3 EP0938935A3 (fr) 2000-05-03

Family

ID=7859013

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99103029A Withdrawn EP0938935A3 (fr) 1998-02-27 1999-02-16 Dispositif de revêtement par rideau

Country Status (3)

Country Link
EP (1) EP0938935A3 (fr)
JP (1) JPH11290748A (fr)
DE (1) DE19808159A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2529927A2 (fr) 2007-07-20 2012-12-05 Bayer Innovation Gmbh Matériau composite polymère ayant une fonctionnalité biocide
US8372417B2 (en) 2007-07-20 2013-02-12 Bayer Innovation Gmbh Polymer composite film with barrier functionality
US8383549B2 (en) 2007-07-20 2013-02-26 Bayer Cropscience Lp Methods of increasing crop yield and controlling the growth of weeds using a polymer composite film

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10027034A1 (de) 2000-06-02 2001-12-13 Mitsubishi Hitec Paper Flensbu Verfahren und Vorrichtung zur Vorhangbeschichtung
DE10245075A1 (de) * 2002-09-27 2004-04-01 Voith Paper Patent Gmbh Auftragswerk
DE502006003618D1 (de) * 2006-09-01 2009-06-10 Mitsubishi Hitec Paper Bielefe Vorhangbeschichtungsverfahren sowie eine dafür verwendete Vorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632374A (en) 1968-06-03 1972-01-04 Eastman Kodak Co Method of making photographic elements
DE1269546B (de) 1963-09-20 1974-11-14 4100 Duisburg Dipl Ing Jürgen Schol ten Maschine zum Aufbringen eines Lack , Leim- oder ähnlichen Flussigkeitsfilmes
US3867901A (en) 1968-06-03 1975-02-25 Eastman Kodak Co Apparatus for production of photographic elements
EP0440279A1 (fr) 1990-01-29 1991-08-07 Agfa-Gevaert N.V. Dispositif pour l'enduction sous forme de rideau d'éléments photographiques
EP0489978A1 (fr) 1990-12-12 1992-06-17 Agfa-Gevaert N.V. Enduiseuse à rideau
EP0704752A1 (fr) 1994-09-27 1996-04-03 Ilford Ag Méthode et dispositif d'enduire du rideau sur un support en mouvement

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1652272C3 (de) * 1967-02-24 1975-06-12 Agfa-Gevaert Ag, 5090 Leverkusen Verfahren und Vorrichtung zum Beschichten von Bändern, insbesondere mit photographischen Emulsionen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1269546B (de) 1963-09-20 1974-11-14 4100 Duisburg Dipl Ing Jürgen Schol ten Maschine zum Aufbringen eines Lack , Leim- oder ähnlichen Flussigkeitsfilmes
US3632374A (en) 1968-06-03 1972-01-04 Eastman Kodak Co Method of making photographic elements
US3867901A (en) 1968-06-03 1975-02-25 Eastman Kodak Co Apparatus for production of photographic elements
EP0440279A1 (fr) 1990-01-29 1991-08-07 Agfa-Gevaert N.V. Dispositif pour l'enduction sous forme de rideau d'éléments photographiques
EP0489978A1 (fr) 1990-12-12 1992-06-17 Agfa-Gevaert N.V. Enduiseuse à rideau
EP0704752A1 (fr) 1994-09-27 1996-04-03 Ilford Ag Méthode et dispositif d'enduire du rideau sur un support en mouvement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"research disclosure n 189", 1980

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2529927A2 (fr) 2007-07-20 2012-12-05 Bayer Innovation Gmbh Matériau composite polymère ayant une fonctionnalité biocide
US8372418B2 (en) 2007-07-20 2013-02-12 Bayer Innovation Gmbh Polymer composite film with biocide functionality
US8372417B2 (en) 2007-07-20 2013-02-12 Bayer Innovation Gmbh Polymer composite film with barrier functionality
US8383549B2 (en) 2007-07-20 2013-02-26 Bayer Cropscience Lp Methods of increasing crop yield and controlling the growth of weeds using a polymer composite film

Also Published As

Publication number Publication date
JPH11290748A (ja) 1999-10-26
DE19808159A1 (de) 1999-09-02
EP0938935A3 (fr) 2000-05-03

Similar Documents

Publication Publication Date Title
AT396555B (de) Beschichtungsvorrichtung zum beschichten einer bewegten bahn aus papier oder pappe
EP0740197B1 (fr) Procédé et appareil pour le revêtement par rideau d'un support en mouvement
DE69323474T2 (de) Randleisten mit zwei Drähten für die Vorhangsbeschichtung
DE2804982A1 (de) Anordnung zum zufuehren eines kohaerenten kuehlfluessigkeits-vorhanges
DE1067204T1 (de) Anlage und Verfahren zur Vermeidung von Bandvibrationen in den Gaseinblaszonen insbesondere in den Kühlzonen
DE1652329A1 (de) Verfahren und Vorrichtung zur Aufbringung einer Fluessigkeit auf einer Oberflaeche
DE3513063C2 (fr)
DE69221697T2 (de) Vorhangbeschichtungsmethode und Vorrichtung
EP0938935A2 (fr) Dispositif de revêtement par rideau
DE2504701A1 (de) Beschichtungsverfahren und -vorrichtung
EP0287759A1 (fr) Appareil pour le revêtement d'une matière en feuille
DE4024229C1 (fr)
EP0249234B1 (fr) Dispositif d'évacuation pour couvrir bilatéralement en continu un ruban à métaux
DE3435501A1 (de) Vorrichtung zum kontinuierlichen kuehlen einer erwaermten, waagerecht liegenden metallplatte
DE2857330T1 (de) Method and apparatus for applying liquid to a moving surface
EP2006029B1 (fr) Dispositif d'application d'un produit d'application sur un substrat
DE60200587T2 (de) Verfahren und vorrichtung zur beschichtung der zylindern einer metallbandgiessanlage
DE3040503A1 (de) Verfahren und vorrichtung zum fortlaufenden beschichten eines metallbandes
DE2206147B2 (de) Vorrichtung zum Erzeugen eines auf eine Materialbahn zu übertragenden Flussigkeitsfilms
DE69422261T2 (de) Auffangbehälter mit Seitenwänden zur Vorbereitung von Vorhangbegiessern
DE2628120C2 (de) Verfahren zum Abscheiden von aufgelösten Faserflocken aus einem Transportluftstrom und Vorrichtungen zur Durchführung des Verfahrens
DE2326023B2 (de) Verfahren zum Emaillieren der Ränder von Sanitarartikeln
DE19827712A1 (de) Vorrichtung zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Auftragsmediums auf eine laufende Materialbahn
DE19905387A1 (de) Falztrichter eines Falzapparats einer Rotationsdruckmaschine
DE3048133A1 (de) Beschichtungsvorrichtung mit luftduesenanordnung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 20000721