EP1613439A1 - Device for coating a continuous web of material - Google Patents
Device for coating a continuous web of materialInfo
- Publication number
- EP1613439A1 EP1613439A1 EP04719370A EP04719370A EP1613439A1 EP 1613439 A1 EP1613439 A1 EP 1613439A1 EP 04719370 A EP04719370 A EP 04719370A EP 04719370 A EP04719370 A EP 04719370A EP 1613439 A1 EP1613439 A1 EP 1613439A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- curtain
- coating
- casting
- coating material
- guide
- 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
Links
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
-
- 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
-
- 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 invention relates to a device for coating a running material web with a casting container, the
- At least one distribution chamber extending transversely to the web running direction with a feed for coating material and an outlet slot on the casting surface
- curtain coaters are known for coating current material webs, such as paper or cardboard webs, plastic or metal foils, in which the coating material (plastic dispersions, pigment coating ink, etc.) is applied to the material web from a slot nozzle in a free-falling curtain.
- so-called slide hopper are preferably used, in which the different layers are first placed on top of each other on a sliding surface from which they run together in a freely falling curtain.
- the two curtain edges are each guided by a guide element that extends from the casting container into the vicinity of the material web.
- the guide elements are designed as part of the side plates of the casting container.
- a curtain coater is known from WO 01/47643, which makes it possible to set the coating width differently over a large area.
- a curtain area is separated on each side of the curtain, which always falls in a constant width, by means of transversely adjustable dividing elements. The separated coating material is removed. It has to be recirculated at great expense or it is lost.
- the invention is therefore based on the object of improving a coating device of the generic type in such a way that different coating widths can be set without coating material having to be recirculated or lost.
- lateral guide elements are curved at their upper end in accordance with the course of the pouring surface and are fastened transversely adjustable on the pouring surface, and in that the coating material feed opens into the distribution chamber in the central region of the pouring container.
- the solution according to the invention makes it possible to adjust the width of the coating material emerging from the outlet slot of the distribution chamber on the sliding surface and thus the width of the curtain to the desired coating width. It is therefore no longer necessary to cut off parts of the curtain or to dismantle parts of the nozzle when the coating width is reduced.
- the known elements can be arranged there for a uniform application with straight and sharp coating edges, as described in WO 02/081103; for example a suction element to avoid a bead on the material web.
- FIG. 1 shows a cross section through a slide hopper with two distribution chambers for applying two layers one above the other
- FIG. 2 shows an enlarged section in the region of the run-off edge of the sliding surface
- FIG. 3 shows the edge area of the slide hopper in a view against the web running direction
- FIGS. 4 and 5 each show a perspective view of a slide hopper with four distribution chambers and continuously adjustable curtain width adjustment
- Figure 6 shows one of the adjustable inserts to limit the
- the coating device shown in the figures serves z. B. in the production of self-adhesive labels or adhesive film strips for applying a dispersion pressure sensitive adhesive and other layers on a web-shaped carrier element, for example a paper web or a plastic film. Due to its advantageous properties, it can also be used to apply other dispersions to paper webs, as well as metal or plastic films, for example in the production of packaging materials or ink-jet papers and for coating paper or cardboard webs with coating color or microcapsules, as well as other special applications ,
- the coating device is designed as a slide hopper and contains a modular casting container 1, which has at least one has distribution chamber 2 extending transversely to the web running direction.
- the casting container 1, according to FIG. 1, is composed of three modules 3, 4, 5, as shown in FIG. 1.
- the module 3 facing the curtain is provided with a drain edge 6 and has a recess on the opposite side, which forms a first distribution chamber 2.
- a further module 4 which on the one hand partially seals the distribution chamber 2 of the module 3 and at the same time has a second distribution chamber 2 on the opposite side.
- the module 5 on the one hand seals the second distribution chamber 2 of the module 4 and on the other hand delimits the casting container 1.
- the surface of the casting container 1 is designed as a forwardly inclined casting surface 8, on which the various layers emerging from the respective distribution chamber 2 are placed one above the other.
- each distribution chamber 2 has an outlet slot 9 which extends over the length of the distribution chamber 2 and which ends on the casting surface 8.
- the supply of coating material into the respective distribution chamber 2 takes place in each case via a channel 10 which is arranged in the central region of the casting container 1 at a sufficient distance from the sealing plates, from which the distribution chambers 2 are closed laterally.
- the feed channels 10 preferably end exactly in the middle of the respective viewed over the web width
- Distribution chamber 2 so that the coating material in the distribution chamber 2 is evenly distributed to the sides regardless of the set coating width.
- the casting container 1 according to FIG. 1 contains two distribution chambers 2 for applying the layers, the casting container 1 according to FIGS. 4 and 5 for applying four layers corresponding to four distribution chambers 2.
- the number of distribution chambers 2 is directly determined by the number of modules 3, 4 , 5 determined.
- Guide element 7, 12 arranged for the respective curtain edge, which is curved at its upper end according to the course of the casting surface 8.
- Each guide element 7, 12 extends over the length of the casting surface 8 and beyond its end parallel to the curtain C, downward, see FIG. 4, into the vicinity of the web 13 to be coated.
- the guide elements 7, 12 can be transversely adjusted on the casting surface 8 attached, the lateral adjustment can be done either manually or automatically, e.g. B. done via a linear actuator pneumatically, electrically or hydraulically.
- the guide elements 7, 12 serve to counteract a constriction of the free-falling curtain C at its edges due to the surface tension of the coating material.
- the strip-shaped guide elements 7, 12 have an inner side facing the curtain C, which is flat.
- the inside of each guide element 7, 12 can be rinsed with an auxiliary liquid which reduces the surface tension, for example with water or the curtain liquid itself.
- the auxiliary liquid flowing down from top to bottom on the guide elements 7, 12 causes the curtain C to adhere to the guide elements 7, 12.
- the auxiliary liquid is supplied via a channel 14 which opens a short distance above the run-off edge 6 of the casting surface 8 and is connected to a supply line 15, as shown in FIG. 2.
- a suction element 16 is attached, the inside of which faces the curtain C is flush with the inside of the guide element 12.
- the suction slot 18 runs perpendicular to the curtain C, its length measured in the web running direction is 0.5 mm to 15 mm, preferably 5 mm to 12 mm, so that the suction function is guaranteed in the event of corresponding fluctuations in the curtain C. Its height is 0.1 mm to 2 mm, preferably 0.5 mm to 1 mm, and it is arranged on the underside of the suction element 16 so that its distance from the web 13 is 0.5 mm to 3 mm.
- the suction channel is closed at the bottom with a thin bottom 19 which is only slightly inclined against the web and which ends in the suction slot 18 in a sharp edge.
- the thickened edge of the coating material is thus suctioned off essentially in a horizontal direction.
- the sharp edge ensures a reliable detachment of the coating material without the so-called "teapot effect" occurring.
- the suction slot 18 is additionally rinsed with a suitable rinsing liquid, for example with water. Two rinsing lines lead to this 20 essentially parallel to the suction line to the suction slot 18. The rinsing liquid is led away together with the suctioned coating material via the suction line 17.
- the two guide elements 12 in their lower part, which delimit the curtain C are made from a limitedly flexible, elastically bendable material, preferably from spring steel such as shown in Figure 3.
- a support bar 21 extends downward at a small distance parallel to the guide element 12.
- the support bar 21 is in any case made of a stiffer material than the guide element and z. B. made of stainless steel and ends at a short distance in front of the suction element 16.
- an adjustable screw 22 is mounted against the guide element 12.
- the adjusting screw 22 makes it possible to adjust the free end of the guide element 12 with the suction element 16 attached to it to a limited extent transversely to the web running direction in order to be able to adjust the position of the suction slot 18 exactly.
- the course of the guide element 12 can also be varied to a limited extent with the adjusting screw 22 in order to optimally adjust the guidance and adhesion of the curtain edge.
- Casting surface 8 mounted transversely and continuously adjustable, as shown in Figure 4.
- the lower guide element 12 is attached to a cover plate 23.
- the curtain-side edge of the cover plate 23 simultaneously forms the upper guide element 7.
- angles 24 are fastened, which are mounted on one side on a linear unit 25.
- the linear unit 25 is in turn attached to a carrier plate 26.
- the carrier plate 26 can be moved manually or automatically via a linear guide unit 27.
- the inclusion of the carrier plate 26 in the linear guide unit 27 can be seen in FIG. 5.
- FIG. 5 also shows that a further lateral support plate 28 is attached to the angled lower region of the support plate 26.
- the side support plate 28 is used to guide and attach
- the guide rods 29 extend into the distribution chambers 2 and are circumferentially guided in radial seals in a sealing plate 30.
- the cover plate 23 is moved forward in the web running direction by means of the linear unit 25.
- the carrier plate 26, 28 is now moved transversely to the curtain C. The method can be carried out manually, by simply pulling or pushing on the carrier plate 26, 28 or via a drive (not shown). During the displacement of the carrier plate 26, 28, the carrier plate 26, 28 slides in guides which are connected to the linear guide unit 27.
- the guide rods 29 are moved into the sealing plate 30 or out of the sealing plate 30.
- the inserts 31 are attached.
- the inserts 31 are guided in the distribution chambers 2 and limit the distribution chambers 2, right up to the inner edge of the cover plate, which in turn forms the upper guide element 7.
- the insert 31 is preferably made of plastic and is provided with threaded inserts 32 in which the guide rods 29 are fastened.
- the insert 31 delimits the distribution chambers transversely to the curtain and thus limits the width of the outlet slots 9.
- the cavity formed behind the inserts 31 in the distribution chambers 2, i. H. the area facing away from the curtain C can optionally be filled with auxiliary liquid.
- the nozzle can be operated with or without auxiliary liquid in the cavity behind the inserts 31.
- an angle screw connection 33 is introduced into the sealing plate 30, via which the distribution chambers 2 are supplied with the auxiliary liquid, the auxiliary liquid also being connected to the via the guide rods 29
- the structure of the insert 31 is shown in FIG. 6.
- the insert 31 consists, for. B. made of plastic and preferably has metallic thread inserts 32.
- On a thin base plate 34 a wedge-shaped 35 and a cuboid 36 body is formed.
- the upper part of the base plate 34 extends into the outlet slot 9 and the attached elements 35, 36 run as sealing bodies in the distribution chambers 2.
- the guide rods 29 are screwed into the threaded inserts 32.
- the opposite end of the insert 31 limits the distribution chamber 2 to the coating width of the curtain.
- the insert 31 thus forms a lateral seal between the outlet slot 9 and the distribution chamber 2, which is filled with the casting solution for the curtain C, the auxiliary liquid located behind the insert 31 being intended to prevent the insert 31 from becoming stuck.
- the inserts 31 are each displaced by means of two guide rods 29 which are fastened on the one hand on one side of the insert 31 and on the other hand on the side carrier plate 28.
- the lateral support plate 28 is located laterally next to the casting container 1 and is fixedly connected to the support plate 26 so that it can be moved by a drive transversely to the web running direction.
- the inserts 31 fastened to the guide rods 29 are positioned such that their inside is aligned with the inner surface of the guide elements 7, so that the width of the distribution chambers 2 corresponds exactly to the width of the casting surface 8 and the curtain C. Thus, only coating material emerges in the width that corresponds to the desired width of the coating. This ensures that no coating material is lost or has to be recirculated for every coating width set.
- the inserts 31 do not stick in the distribution chambers 2 during operation and can therefore no longer be moved, they are rinsed from the outside with a rinsing liquid, for example water or a solvent.
- a rinsing liquid for example water or a solvent.
- Sealing wall 30 channels arranged that lead to the individual distribution chambers 2 and are externally connected to a feed with an elbow fitting 33 for the rinsing liquid.
- the inserts 31 are preferably arranged with little play in the distribution chambers 2, so that some washing liquid can pass through and also exit through the outlet slots 9 onto the casting surface 8, preferably the washing liquid is introduced into the distribution chambers with an overpressure.
- the rinsing liquid can thus also serve as an auxiliary liquid for the curtain edges, which improves the adherence to the guide elements 7.
- the separate supply of auxiliary liquid to the guide elements 7 can be spared.
- the rinsing and auxiliary liquid then runs over the pouring surface 8 on the inside of the guide elements 7 to the end of the lower guide elements 12 and ensures that the edge of the curtain adheres securely.
- Figures 1, 2 and 3 show the structure and the attachment of the guide element 12 to the cover plate 23.
- the guide element 12 is detachable, fastened to the cover plate 23 by means of a knurled screw 34. The operator is thus able to detach the lower guide element 12 from the cover plate 23 very quickly.
- the guide element 12 consists on both sides of two knurled screws 34, a receptacle 35, a support bar 21 with an adjusting screw 22 and the guide element 12 and the suction element 16 attached to the lower end of the guide element 12.
- the two knurled screws 34 are seated in recesses 36 and are sufficient their threads into the receptacles, as shown in section in Figure 2.
- the support bar 21 is rigidly attached.
- the lower guide element 12 is movable.
- the guide element 12 can be adjusted transversely to the curtain C by means of the adjusting screw 22 over a small angular range, designated W in FIG. 3.
Landscapes
- Coating Apparatus (AREA)
- Reverberation, Karaoke And Other Acoustics (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10316999A DE10316999A1 (en) | 2003-04-11 | 2003-04-11 | Device for coating a running material web |
PCT/EP2004/002481 WO2004089555A1 (en) | 2003-04-11 | 2004-03-11 | Device for coating a continuous web of material |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1613439A1 true EP1613439A1 (en) | 2006-01-11 |
EP1613439B1 EP1613439B1 (en) | 2007-05-02 |
Family
ID=33039072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04719370A Expired - Lifetime EP1613439B1 (en) | 2003-04-11 | 2004-03-11 | Device for coating a continuous web of material |
Country Status (6)
Country | Link |
---|---|
US (1) | US7556692B2 (en) |
EP (1) | EP1613439B1 (en) |
CN (1) | CN100398220C (en) |
AT (1) | ATE361153T1 (en) |
DE (2) | DE10316999A1 (en) |
WO (1) | WO2004089555A1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI117176B (en) * | 2005-01-27 | 2006-07-14 | Metso Paper Inc | A device for adjusting the application width of a level feed curtain wrapper |
DE102005059966B4 (en) * | 2005-12-15 | 2007-10-31 | Polytype Converting S.A. | Curtain coater with laterally adjustable fold |
FI118925B (en) * | 2006-10-03 | 2008-05-15 | Metso Paper Inc | Method and arrangement for fiber web curtain coating |
JP5239008B2 (en) * | 2007-07-13 | 2013-07-17 | ボイス パテント ゲーエムベーハー | Coating width adjustment device for coating machine |
JP5228226B2 (en) * | 2007-07-20 | 2013-07-03 | ボイス パテント ゲーエムベーハー | Thermal paper manufacturing equipment |
JP2009101321A (en) * | 2007-10-25 | 2009-05-14 | Voith Patent Gmbh | Coating width adjustment device |
DE102008040406A1 (en) * | 2008-07-15 | 2010-01-21 | Voith Patent Gmbh | Curtain applicator |
DE102008040403A1 (en) * | 2008-07-15 | 2010-01-21 | Voith Patent Gmbh | Curtain applicator |
DE102009054737A1 (en) * | 2009-12-16 | 2011-06-22 | Voith Patent GmbH, 89522 | Curtain applicator |
EP2412446A1 (en) | 2010-07-30 | 2012-02-01 | Polytype Converting S.A. | Lateral edge guide for curtain coating method |
DE102012004875B3 (en) * | 2012-03-10 | 2012-07-19 | Andritz Küsters Gmbh | Device for curtain coating current material web e.g. paper web, has guide comprising suction apparatus with suction channel, and nozzle provided at channel, where steam at rear side of suction slot is injected into channel via nozzle |
DE102014102610A1 (en) * | 2014-02-27 | 2015-08-27 | Windmöller & Hölscher Kg | Suction channel for a suction device for conveying cut waste strips of a film web |
WO2016165740A1 (en) | 2015-04-14 | 2016-10-20 | Hewlett-Packard Indigo B.V. | Fluid application |
CN112657764B (en) * | 2020-12-18 | 2022-08-09 | 领驰慧润滑科技(河北)有限公司 | Oil immersion device capable of fully immersing oil and avoiding oil waste for processing automobile parts |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1300746A (en) | 1969-03-26 | 1972-12-20 | Kodak Ltd | Coating apparatus |
FR2039983A5 (en) * | 1969-03-26 | 1971-01-15 | Eastman Kodak Co | Photographic coating unit |
GB1429260A (en) | 1973-10-12 | 1976-03-24 | Ciba Geigy Ag | Coating apparatus |
US4135477A (en) | 1975-09-22 | 1979-01-23 | Ciba-Geigy Ag | Curtain coating apparatus |
GB2165784B (en) * | 1984-10-24 | 1988-01-06 | Nippon Kokan Kk | Nozzle header for producing a flat laminar flow |
US4659302A (en) * | 1985-01-22 | 1987-04-21 | Jyohoku Seiko Co., Ltd. | Deckle structure for a film extrusion die |
US4851268A (en) * | 1988-01-29 | 1989-07-25 | Eastman Kodak Company | Curtain coating start-up method and apparatus |
KR100272064B1 (en) | 1992-10-27 | 2000-12-01 | 미우라 아끼라 | Die coater |
DE4328626A1 (en) * | 1993-08-27 | 1995-03-02 | Motan Verfahrenstechnik | Method for operating a conveyor pipeline with dense-stream conveyance and apparatus for carrying out the method |
DE19513531A1 (en) * | 1995-04-10 | 1996-10-17 | Du Pont Deutschland | Method and apparatus for reducing curtain casting interference |
JPH09253552A (en) * | 1996-03-21 | 1997-09-30 | Konica Corp | Curtain coating device |
US6423144B1 (en) * | 1996-08-07 | 2002-07-23 | Matsushita Electric Industrial Co., Ltd. | Coating apparatus and coating method |
JP3903080B2 (en) * | 1997-09-26 | 2007-04-11 | 富士フイルム株式会社 | Slide bead coating method and apparatus, and multilayer coating method and apparatus |
JP2000254567A (en) * | 1999-03-09 | 2000-09-19 | Mitsubishi Paper Mills Ltd | Method and apparatus for application |
DE19962844A1 (en) | 1999-12-23 | 2001-07-05 | Bachofen & Meier Ag Maschf | Method and device for coating a running material web |
DE10117668A1 (en) * | 2001-04-09 | 2002-10-10 | Bachofen & Meier Ag Buelach | Device for coating a running material web |
-
2003
- 2003-04-11 DE DE10316999A patent/DE10316999A1/en not_active Withdrawn
-
2004
- 2004-03-11 EP EP04719370A patent/EP1613439B1/en not_active Expired - Lifetime
- 2004-03-11 WO PCT/EP2004/002481 patent/WO2004089555A1/en active IP Right Grant
- 2004-03-11 DE DE502004003691T patent/DE502004003691D1/en not_active Expired - Lifetime
- 2004-03-11 US US10/552,822 patent/US7556692B2/en not_active Expired - Fee Related
- 2004-03-11 CN CNB2004800057748A patent/CN100398220C/en not_active Expired - Fee Related
- 2004-03-11 AT AT04719370T patent/ATE361153T1/en active
Non-Patent Citations (1)
Title |
---|
See references of WO2004089555A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1613439B1 (en) | 2007-05-02 |
US7556692B2 (en) | 2009-07-07 |
DE10316999A1 (en) | 2004-10-28 |
CN1756604A (en) | 2006-04-05 |
CN100398220C (en) | 2008-07-02 |
US20060201421A1 (en) | 2006-09-14 |
DE502004003691D1 (en) | 2007-06-14 |
ATE361153T1 (en) | 2007-05-15 |
WO2004089555A1 (en) | 2004-10-21 |
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