EP0704752B1 - Procédé et appareil pour le revêtement par rideau d'un support en mouvement. - Google Patents

Procédé et appareil pour le revêtement par rideau d'un support en mouvement. Download PDF

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Publication number
EP0704752B1
EP0704752B1 EP94810560A EP94810560A EP0704752B1 EP 0704752 B1 EP0704752 B1 EP 0704752B1 EP 94810560 A EP94810560 A EP 94810560A EP 94810560 A EP94810560 A EP 94810560A EP 0704752 B1 EP0704752 B1 EP 0704752B1
Authority
EP
European Patent Office
Prior art keywords
curtain
substrate
pouring
opening
air
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
EP94810560A
Other languages
German (de)
English (en)
Other versions
EP0704752A1 (fr
Inventor
Markus Gueggi
Maurice Pasquier
Peter Schweizer
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.)
Ilford Imaging Switzerland GmbH
Original Assignee
Ilford Imaging Switzerland 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
Application filed by Ilford Imaging Switzerland GmbH filed Critical Ilford Imaging Switzerland GmbH
Priority to EP94810560A priority Critical patent/EP0704752B1/fr
Priority to DE59409768T priority patent/DE59409768D1/de
Priority to US08/534,842 priority patent/US5624715A/en
Priority to JP24955595A priority patent/JP3681443B2/ja
Publication of EP0704752A1 publication Critical patent/EP0704752A1/fr
Application granted granted Critical
Publication of EP0704752B1 publication Critical patent/EP0704752B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/74—Applying photosensitive compositions to the base; Drying processes therefor
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S118/00—Coating apparatus
    • Y10S118/04—Curtain coater

Definitions

  • the present invention relates to a method and a device for coating a moving curtain Carrier with a liquid coating material.
  • a liquid coating material especially when the width of the Machines and high speed result in a large number of problems to close the liquid curtain stabilize and as evenly as possible on the surface bring to.
  • One of these problems is that the free falling liquid film to the front, i.e. in the direction of the moving carrier is deformed. This deviation from the vertical direction of fall is made with the Carrier moving air boundary layer.
  • Figure 1 shows the essential part of the invention Coating plant in section with a schematic illustrated pourer 1, which opens into a pouring lip 2, of which the liquid film 3, in the following curtain called, falls freely towards the casting roll 4, on the schematically the carrier 5 is recorded, which is in Moved in the direction of the arrow, see also Figure 2.
  • the curtain is delimited on both sides by side guides 6.
  • the thickness c of the boundary layer 25, which on the The curtain bounces minimized.
  • Distance a squeegee / carrier see Figure 2
  • keeps very small for example 0.1-1.0 mm, preferably 0.1-0.5 mm and the distance b squeegee / dynamic wetting line to 5 - 30 mm, preferably 10 - 20 mm, can be entered a residual air volume and the formation of the boundary layer cannot be avoided entirely.
  • the area in front of the curtain is defined by the bottom 9 the pouring lip 2, below through the carrier 5, opposite the Curtain through the front 8 of the squeegee, and on both sides limited by the side guides 6 and therefore arises as a practically closed room 10. Without special Measures would be taken by the air boundary layer 11 along the falling curtain, see Figure 2, rotating air vortices 12 arise that are divided into individual unstable cells can divide. This will make the flow of the curtain disturbed and restless, leading to a diminished Baste quality leads.
  • the air supply opening 22 opens at the Bottom 9 of the pouring lip 2, so that there with air arriving at low speed down distracted and finally from the squeegee, or its Slot 17 is suctioned off.
  • a very uniform Flow is generated, with the supplied air is preferably preheated.
  • the appropriate Settings of the supplied and extracted air volume can the line of impact of the curtain on the support that dynamic wetting line 26, at the desired location can be set. Since the squeegee, as above explained for a stabilization of the dynamic Wetting line is ensured by a combination of described measures a uniform coating achieved.
  • the air extraction and Feeders combined into one unit and to be controlled.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)

Claims (8)

  1. Procédé pour le revêtement par rideau d'un support en mouvement avec une matière de revêtement liquide, plus particulièrement des émulsions photographiques, l'air entraíné par ledit support en mouvement étant évacué avant le rideau, vu en direction de mouvement du support, caractérisé en ce que l'aspiration est effectuée par une fente (17) s'étendant sur la longueur entière de la racle et dont l'ouverture se trouve immédiatement derrière l'arête avant de la racle.
  2. Procédé selon la revendication 1, caractérisé en ce que de l'air est constamment admis à l'espace (10) situé devant le rideau de coulée, vu en direction de mouvement du support, constitué par la face inférieure (9) de la lèvre de coulée (2), les délimitations latérales (6), le support en mouvement (5) et la face frontale (8) du dispositif d'aspiration, ledit air étant évacué près du support.
  3. Procédé selon la revendication 2, caractérisé en ce que l'air admis est préchauffé.
  4. Procédé selon la revendication 2 ou 3, caractérisé en ce que la quantité d'air admis et évacué est réglée afin d'ajuster l'emplacement de la ligne de mouillage dynamique du rideau sur le support.
  5. Appareil pour la mise en oeuvre du procédé selon la revendication 1, comprenant un verseur (1) muni d'une lèvre de coulée (2) ainsi qu'un rouleau de coulée (4) porteur d'un support (5), caractérisé en ce que ledit appareil comporte un dispositif d'aspiration disposé devant le rideau (3) et comprenant une racle (7) aspirante dont l'arête avant en regard du rideau (3) présente une fente (17) s'étendant sur la largeur du support et reliée à une installation de vide, l'ouverture de ladite fente (17) étant située près de la surface du support (5) et de la ligne de mouillage dynamique (26) du rideau (3).
  6. Appareil selon la revendication 5, caractérisé en ce que la distance a entre l'ouverture de la fente (17) et la surface du support sur le rouleau de coulée est comprise entre 0,1 et 1,0 mm, préférablement entre 0,1 et 0,5 mm, et que la distance b entre l'ouverture de la fente (17) et la ligne de mouillage dynamique (26) est comprise entre 5 et 40 mm, préférablement entre 10 et 20 mm.
  7. Appareil selon la revendication 5 pour la mise en oeuvre du procédé selon la revendication 1, comprenant un verseur (1) constitué de la plaque de coulée (21) et muni d'une lèvre de coulée (2), ainsi qu'un rouleau de coulée (4) porteur d'un support (5), caractérisé en ce qu'une ouverture (22) disposée parallèlement au rideau (3) est prévue à l'endroit de la dernière plaque de coulée (21) sous la lèvre de coulée (2), ladite ouverture étant reliée à une installation d'admission d'air.
  8. Appareil selon l'une des revendications 5 à 9, caractérisé en ce que l'ouverture (22) est constituée par une fente entre le face arrière (15) de la racle aspirante, opposée au rideau, et la face frontale de la dernière plaque de coulée (21).
EP94810560A 1994-09-27 1994-09-27 Procédé et appareil pour le revêtement par rideau d'un support en mouvement. Expired - Lifetime EP0704752B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP94810560A EP0704752B1 (fr) 1994-09-27 1994-09-27 Procédé et appareil pour le revêtement par rideau d'un support en mouvement.
DE59409768T DE59409768D1 (de) 1994-09-27 1994-09-27 Verfahren und Vorrichtung zur Vorhangbeschichtung eines bewegten Trägers
US08/534,842 US5624715A (en) 1994-09-27 1995-09-27 Method and apparatus for curtain coating a moving support
JP24955595A JP3681443B2 (ja) 1994-09-27 1995-09-27 移動する支持体に幕状にコーテイングする方法および装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94810560A EP0704752B1 (fr) 1994-09-27 1994-09-27 Procédé et appareil pour le revêtement par rideau d'un support en mouvement.

Publications (2)

Publication Number Publication Date
EP0704752A1 EP0704752A1 (fr) 1996-04-03
EP0704752B1 true EP0704752B1 (fr) 2001-05-30

Family

ID=8218314

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94810560A Expired - Lifetime EP0704752B1 (fr) 1994-09-27 1994-09-27 Procédé et appareil pour le revêtement par rideau d'un support en mouvement.

Country Status (4)

Country Link
US (1) US5624715A (fr)
EP (1) EP0704752B1 (fr)
JP (1) JP3681443B2 (fr)
DE (1) DE59409768D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104549797A (zh) * 2013-10-28 2015-04-29 沈阳芯源微电子设备有限公司 一种带清洗部件的液体喷洒装置

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Publication number Priority date Publication date Assignee Title
US5780109A (en) * 1997-01-21 1998-07-14 Minnesota Mining And Manufacturing Company Die edge cleaning system
US5976630A (en) * 1997-09-29 1999-11-02 Eastman Kodak Company Method and apparatus for curtain coating
DE59704675D1 (de) * 1997-10-03 2001-10-25 Tse Troller Schweizer Engineer Verfahren und Vorrichtung zur Vorhangbeschichtung eines bewegten Trägers
DE19803240A1 (de) 1998-01-28 1999-07-29 Voith Sulzer Papiertech Patent Farbvorhang-Auftragsvorrichtung
DE19808159A1 (de) 1998-02-27 1999-09-02 Agfa Gevaert Ag Vorrichtung zum Vorhangbeschichten
DE19829449A1 (de) * 1998-07-01 2000-01-05 Voith Sulzer Papiertech Patent Auftragsvorrichtung und Auftragsverfahren
JP4113985B2 (ja) * 1998-07-22 2008-07-09 富士フイルム株式会社 塗布方法及び装置
FI115295B (fi) 1999-09-01 2005-04-15 Metso Paper Inc Verhopäällystin ja verhopäällystysmenetelmä
DE10027034A1 (de) 2000-06-02 2001-12-13 Mitsubishi Hitec Paper Flensbu Verfahren und Vorrichtung zur Vorhangbeschichtung
US6669993B2 (en) * 2000-09-19 2003-12-30 Honeywell International Inc. High speed yarn finish application
US6666946B2 (en) * 2001-03-14 2003-12-23 3M Innovative Properties Company Method of high speed coating pigment-containing liquid coating materials
AU2002357208A1 (en) * 2001-12-13 2003-07-09 Dow Global Technologies Inc. Method and apparatus for curtain coating
DE60209434T2 (de) 2002-12-12 2006-10-19 Metso Paper, Inc. Verfahren und Vorrichtung zum Vorhang- Beschichten
FI115407B (fi) * 2003-06-26 2005-04-29 Metso Paper Inc Paperi-/kartonkikoneen verhopäällystinyksikkö
DE10358754B4 (de) * 2003-12-12 2011-07-14 M-Real Oyj Bahnfördervorrichtung
DE102004056271A1 (de) 2004-11-22 2006-05-24 Basf Ag Anordnung und Verfahren zur Vorhangbeschichtung bewegter Substrate
DE102005027700A1 (de) 2005-06-15 2006-12-21 Basf Ag Vorhangbeschichter mit Grenzschichtablösevorrichtung
US20070045896A1 (en) * 2005-08-31 2007-03-01 Fuji Photo Film Co., Ltd. Method and apparatus for producing film
KR101244674B1 (ko) * 2006-05-02 2013-03-25 다우 코닝 아일랜드 리미티드 웹 밀봉 장치
WO2007128947A1 (fr) * 2006-05-02 2007-11-15 Dow Corning Ireland Limited Système de remplacement de fluides
DE502006003618D1 (de) * 2006-09-01 2009-06-10 Mitsubishi Hitec Paper Bielefe Vorhangbeschichtungsverfahren sowie eine dafür verwendete Vorrichtung
JP5510785B2 (ja) * 2009-09-25 2014-06-04 大日本印刷株式会社 塗布装置および塗布方法
DE102009054737A1 (de) * 2009-12-16 2011-06-22 Voith Patent GmbH, 89522 Vorhang-Auftragswerk
DE102016209336B4 (de) * 2016-05-30 2021-08-05 Voith Patent Gmbh Vorhangauftragswerk
DE102017124280A1 (de) 2017-10-18 2019-04-18 Voith Patent Gmbh Vorhang-Auftragswerk und Verfahren zum Auftragen eines Auftragsmediums

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US3508947A (en) * 1968-06-03 1970-04-28 Eastman Kodak Co Method for simultaneously applying a plurality of coated layers by forming a stable multilayer free-falling vertical curtain
US3867901A (en) * 1968-06-03 1975-02-25 Eastman Kodak Co Apparatus for production of photographic elements
US3632374A (en) * 1968-06-03 1972-01-04 Eastman Kodak Co Method of making photographic elements
US4128667A (en) * 1974-01-10 1978-12-05 Polaroid Corporation Manipulation of coating streams with air foils
GB1559701A (en) * 1976-05-26 1980-01-23 Ciba Geigy Ag Curtain coating
JPS62186966A (ja) * 1986-02-12 1987-08-15 Fuji Photo Film Co Ltd 塗布方法及び装置
WO1992002851A2 (fr) * 1990-07-30 1992-02-20 Eastman Kodak Company Procede et appareil pour le couchage par voile
EP0489978B1 (fr) * 1990-12-12 1996-03-20 Agfa-Gevaert N.V. Enduiseuse à rideau
US5206057A (en) * 1992-01-10 1993-04-27 Eastman Kodak Company Method and apparatus for adjusting the curtain impingement line in a curtain coating apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104549797A (zh) * 2013-10-28 2015-04-29 沈阳芯源微电子设备有限公司 一种带清洗部件的液体喷洒装置
CN104549797B (zh) * 2013-10-28 2017-01-18 沈阳芯源微电子设备有限公司 一种带清洗部件的液体喷洒装置

Also Published As

Publication number Publication date
JPH08173879A (ja) 1996-07-09
US5624715A (en) 1997-04-29
EP0704752A1 (fr) 1996-04-03
DE59409768D1 (de) 2001-07-05
JP3681443B2 (ja) 2005-08-10

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