EP1392926A2 - Auftragsvorrichtung - Google Patents
AuftragsvorrichtungInfo
- Publication number
- EP1392926A2 EP1392926A2 EP02732368A EP02732368A EP1392926A2 EP 1392926 A2 EP1392926 A2 EP 1392926A2 EP 02732368 A EP02732368 A EP 02732368A EP 02732368 A EP02732368 A EP 02732368A EP 1392926 A2 EP1392926 A2 EP 1392926A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- application
- medium
- lip
- control channel
- 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
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0283—Flat jet coaters, i.e. apparatus in which the liquid or other fluent material is projected from the outlet as a cohesive flat jet in direction of the work
-
- 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
- B05C5/001—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work incorporating means for heating or cooling the liquid or other fluent material
-
- 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
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0254—Coating heads with slot-shaped outlet
- B05C5/0262—Coating heads with slot-shaped outlet adjustable in width, i.e. having lips movable relative to each other in order to modify the slot width, e.g. to close it
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
-
- 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
- B05C5/005—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 invention relates to a device for direct or indirect application of a liquid or pasty medium to a running material web, in particular made of paper or cardboard, with a metering gap designed as an application nozzle, which is formed between an inlet-side lip and an outlet-side lip of the application device.
- curtain coater ie a curtain application device with which the application medium essentially follows gravity and reaches the surface to be coated from a dispensing nozzle.
- Both types of application devices have a distribution pipe for the application medium. From the distribution pipe, the medium passes through passage openings into a supply gap and from there into the metering gap forming the application nozzle, from which the medium subsequently exits.
- the metering gap is formed by two nozzle lips.
- the outlet width can be varied by adjusting one or both lips.
- a material web runs past the dispensing nozzle and the medium is directly applied to it.
- the material web usually runs over a support surface, for example a support roller.
- the application medium is first applied to the surface of a counter element (e.g. an application roller or an endless circulating belt) in order to be transferred from there to the material element in a nip through which the material web runs ,
- a counter element e.g. an application roller or an endless circulating belt
- the lip on the inlet side That of the two lips forming the metering gap, which lies on the side of the metering gap on which the material web runs towards the application device, is referred to as the lip on the inlet side.
- the lip on the side of the metering gap on which the material web runs away from the application device is referred to as the lip on the outlet side.
- All of the above-mentioned components are machine-wide (that is, they extend across the entire width of the machine for producing and / or finishing the paper or cardboard web). These components are essentially adapted to the width of the material web to be treated, a width of approximately 10 m and more being currently not uncommon. In addition, with the ever increasing machine speeds, it is becoming increasingly difficult to apply the medium evenly. In addition, such elongated components tend to bend.
- the invention is therefore based on the object of further developing an application device in which, on the one hand, the setting of particles at the delivery area of the application nozzle and, on the other hand, thermal deflection of components of the application device can be avoided, or at least minimized.
- both objects are achieved in that at least one temperature control channel through which a fluid flows is integrated in at least one of the two nozzle lips of the application device. Water or air is used as the temperature control fluid.
- the first task avoid or reducing deposits and deposits of particles in the critical areas of the application nozzle
- the second task reducing or reducing ⁇ preventing thermal deflection of the components of the application device responsible for the application result
- the application medium is usually up to approx. 60 ° C warm, causing the application device, in particular the nozzle lips, to heat up with the metering gap.
- the inventors have recognized that a temperature difference can be generated with a cool or cooled fluid between outer surfaces and inner surfaces of the nozzle lips. This causes condensation to form on the medium-carrying surfaces of the metering gap, the condensate formed preventing, or at least considerably reducing, the "sticking" of particles.
- the device thus works almost self-cleaning without machine shutdowns being necessary and the application device being immediately ready for use even after a long break in operation. Flaws in the application layer are avoided.
- the at least one temperature control channel is positioned in the immediate vicinity of the nozzle end, that is to say at the outlet end or the delivery area of the device, since this area represents the critical area for the “caking”.
- the at least one temperature control channel is arranged on the side of the nozzle lip (lips) facing the free environment, the wall thickness of the nozzle lip being smaller in the area of the temperature control channel on the side pointing towards the free environment, than on the Page that is touched by the medium.
- this outer wall section of the nozzle lip forms a thin-walled component, which also seals the temperature control channel to the outside.
- the component for example a sheet metal strip, only needs to have a thickness of 0.1 to 3 mm, preferably 0.2 to 1 mm.
- the metal parts i.e. nozzle lip and sheet metal strip, are connected to one another by means of laser welding or by gluing or by soldering. This technology enables a high-precision and tight connection. This also prevents unwanted distortion of the nozzle lips.
- the device according to the invention is of simple construction. Apart from fluid feeds, which are already present on machines for producing or finishing a material web, in particular paper or cardboard web, for example for cooling channels and / or walls, it does not require any additional components.
- a corresponding branching of the fluid supply line can be accomplished in a simple manner.
- Figure 1 a schematic overall cross-sectional view of the application device according to the invention in the form of a free jet nozzle.
- Figure 2 a second embodiment of the nozzle lips according to the invention in detail.
- Figure 3 a highly schematic cross-sectional view of the application device according to the invention in the form of a curtain application nozzle.
- Figure 4 a third embodiment of the nozzle lips according to the invention in detail.
- the application device for coating a running paper web B comprises a support structure or support beam 1 which extends over the entire machine width (width of the paper manufacturing or finishing machine or width of the application device).
- the paper web runs over a support roller W and is to be coated directly with the application medium M.
- the support beam 1 includes a manifold be 2 (so-called color distribution) for the open zutragende liquid or pasty application medium M, such as pigment-containing Streichfar ⁇ , glue or starch.
- This distribution tube 2 is followed by an equalizing space 3, which continues into a feed channel 4.
- the feed channel 4 opens into a metering gap 5, which is formed between a lip 6 on the inlet side and a lip 7 on the outlet side.
- the lip 6 on the inlet side is the one on which the surface to be coated (here paper web B) runs towards the metering gap 5. Accordingly, the drain-side lip 7 is the one on which the web runs.
- the free end of the inlet-side lip 6 extends beyond the free end of the outlet-side lip 7 and is provided with a concavely curved deflection surface 8 for the purpose of degassing the application medium.
- FIGS. 1 to 4 only one channel is integrated into the corresponding nozzle lip. riert.
- the arrangement of individual chambers or parallel channels would also be conceivable.
- the wall thickness Wi of the nozzle lip 6 and 7 in the region of the temperature control channel 11 and 12 on the free environment facing side is less than the wall thickness W 2 of the nozzle lip 6 and 7, which points to the medium-contacting side 5a and 5b. This means that there are hardly any deformations of the nozzle ends.
- gap changes due to thermal stresses at the nozzle ends are only very minimal. With a gap width of 0.8 mm, for example, they are less than 5%.
- arrows Z are shown in FIG. 2, which are intended to indicate the supply of a fluid, such as water or air, into the temperature control channel 11 or 12.
- the respectively selected fluid water or air
- the respectively selected fluid can be passed through the channels 11, 12 in the start-up phase and / or in the operating phase of the device.
- the fluid is used for cooling, it should be colder than the environment.
- the above-mentioned wall thicknesses Wi are advantageously formed by thin components 14 and 15, so that the entire nozzle lip heated by the application medium, dryers etc. can thermally deform only insignificantly when a cooling fluid flows through the temperature control channels 11 and 12.
- the component 14 can also be formed in one piece, as shown in FIGS. 2 to 4.
- the temperature control channel 11, 12 is closed with the components 14, 15 using a thin sheet metal strip of 0.7 mm thickness.
- connection with the metallic component of the nozzle lip 6, 7 is made with high precision.
- a laser welding method is provided as an example, in particular with a high-power diode laser in the power range from 1.2 to 3.0 kilowatts. With such a weld seam there is no risk of heat distortion of the nozzle lip.
- the length of the two nozzle lips 6 and 7 can be of the same length (see FIGS. 3 and 4) or can also be embodied in such a way that the inlet-side lip 6 - as shown in FIGS. 1 and 2 - extends beyond the free end of the outlet-side lip 7.
- FIG. 3 shows an application device for curtain coating, which is essentially the same as the device according to FIG. Figure 1 is constructed and is therefore provided with the same reference numerals.
- the die lips 6 and 7 of cooling channels 11 and 12 and thinwithmén ⁇ Figures 14 and 15 are in this case arranged pointing vertically downwards and are formed of equal length.
- the dosing gap 5 between the lips 6 and 7 in the selected example gives the application medium downwards, directly onto the material web B (as in FIG. 3 shown), from which the medium M flows out of the nozzle under the influence of gravity.
Landscapes
- Coating Apparatus (AREA)
- Eye Examination Apparatus (AREA)
- Massaging Devices (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Nozzles (AREA)
- Paper (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10118631 | 2001-04-12 | ||
DE10118631A DE10118631A1 (de) | 2001-04-12 | 2001-04-12 | Auftragsvorrichtung |
PCT/DE2002/001179 WO2002083324A2 (de) | 2001-04-12 | 2002-03-30 | Auftragsvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1392926A2 true EP1392926A2 (de) | 2004-03-03 |
EP1392926B1 EP1392926B1 (de) | 2010-03-03 |
Family
ID=7681610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02732368A Expired - Lifetime EP1392926B1 (de) | 2001-04-12 | 2002-03-30 | Auftragsvorrichtung |
Country Status (6)
Country | Link |
---|---|
US (2) | US6902621B2 (de) |
EP (1) | EP1392926B1 (de) |
JP (1) | JP2004524966A (de) |
AT (1) | ATE459754T1 (de) |
DE (3) | DE20122834U1 (de) |
WO (1) | WO2002083324A2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3180475B1 (de) | 2014-08-15 | 2018-10-10 | Voith Patent GmbH | Streichaggregat |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007056121B3 (de) * | 2007-11-15 | 2008-09-25 | Lindauer Dornier Gmbh | Breitschlitzdüse und Anlage zum Beschichten mit thermoplastischem Beschichtungsmaterial |
DE102015118084A1 (de) * | 2015-10-23 | 2017-04-27 | Kugler-Womako Gmbh | Vorrichtung zum Auftragen von im erwärmten Zustand viskosem oder flüssigem Klebstoff |
DE102016209336B4 (de) * | 2016-05-30 | 2021-08-05 | Voith Patent Gmbh | Vorhangauftragswerk |
EP3446792A1 (de) * | 2017-08-22 | 2019-02-27 | The Procter & Gamble Company | Verfahren und vorrichtung zur anwendung eines superabsorbierenden immobilisators |
US10550520B2 (en) | 2018-04-05 | 2020-02-04 | Gl&V Canada Inc. | Method with a horizontal jet applicator for a paper machine wet end |
DE102018110124A1 (de) * | 2018-04-26 | 2019-10-31 | Webasto SE | Verfahren zum Herstellen einer Antriebskabelhalterung für ein Fahrzeugdach und Bauteil für ein Fahrzeugdach |
CN109759284B (zh) * | 2019-03-21 | 2023-12-15 | 泉州市大疆涂布设备有限公司 | 便于垫片快速精准更换的涂布机涂布模头 |
DE102022105438A1 (de) | 2022-03-08 | 2023-09-14 | 4BoxProducer.com Ltd. | Verfahren zum Betrieb einer Kaltleim-Auftragungsvorrichtung und Vorrichtung zum Auftragen von Kaltleim |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB736747A (en) * | 1953-08-31 | 1955-09-14 | Arthur Ronald Trist | Improvements in and relating to means for applying fluent coatings to web material at open width |
US3151356A (en) * | 1961-08-02 | 1964-10-06 | Du Pont | Extrusion die |
US3302239A (en) * | 1963-05-24 | 1967-02-07 | Du Pont | Die |
NL6817090A (de) * | 1968-11-29 | 1970-06-02 | ||
US3690297A (en) * | 1969-07-22 | 1972-09-12 | Blandin Paper Co | Non-aqueous coating of webs |
US3767346A (en) * | 1971-07-22 | 1973-10-23 | Fmc Corp | Film extrusion die |
FR2542636B1 (fr) * | 1983-03-14 | 1985-07-12 | Saint Gobain Vitrage | Procede et dispositif de distribution reguliere d'un solide pulverulent sur un substrat en vue de son revetement et substrat ainsi revetu |
US4932353A (en) * | 1987-12-18 | 1990-06-12 | Mitsubishi Denki Kabushiki Kaisha | Chemical coating apparatus |
US6117237A (en) * | 1994-01-04 | 2000-09-12 | 3M Innovative Properties Company | Coater die enclosure system |
EP0701022B1 (de) * | 1994-09-09 | 2001-04-04 | Voith Paper Patent GmbH | Auftragswerk zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn |
US5792317A (en) * | 1996-02-07 | 1998-08-11 | Gl&V-Paper Machine Group, Inc. | Wet end starch application |
DE19755625A1 (de) * | 1997-12-15 | 1999-07-01 | Jagenberg Papiertech Gmbh | Schlitzdüse zum Beschichten von Materialbahnen, insbesondere Papier- oder Kartonbahnen mit Pigmentstreichfarbe |
DE10012345A1 (de) * | 2000-03-14 | 2001-09-20 | Voith Paper Patent Gmbh | Vorhang-Auftragsvorrichtung |
-
2001
- 2001-04-12 DE DE20122834U patent/DE20122834U1/de not_active Expired - Lifetime
- 2001-04-12 DE DE10118631A patent/DE10118631A1/de not_active Withdrawn
-
2002
- 2002-03-30 DE DE50214254T patent/DE50214254D1/de not_active Expired - Lifetime
- 2002-03-30 JP JP2002581117A patent/JP2004524966A/ja active Pending
- 2002-03-30 WO PCT/DE2002/001179 patent/WO2002083324A2/de active Application Filing
- 2002-03-30 AT AT02732368T patent/ATE459754T1/de active
- 2002-03-30 EP EP02732368A patent/EP1392926B1/de not_active Expired - Lifetime
-
2003
- 2003-10-09 US US10/682,003 patent/US6902621B2/en not_active Expired - Fee Related
-
2005
- 2005-01-18 US US11/037,716 patent/US7279043B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO02083324A2 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3180475B1 (de) | 2014-08-15 | 2018-10-10 | Voith Patent GmbH | Streichaggregat |
Also Published As
Publication number | Publication date |
---|---|
JP2004524966A (ja) | 2004-08-19 |
US7279043B2 (en) | 2007-10-09 |
EP1392926B1 (de) | 2010-03-03 |
DE50214254D1 (de) | 2010-04-15 |
DE20122834U1 (de) | 2008-03-27 |
US20040074442A1 (en) | 2004-04-22 |
ATE459754T1 (de) | 2010-03-15 |
US20050155546A1 (en) | 2005-07-21 |
WO2002083324A2 (de) | 2002-10-24 |
DE10118631A1 (de) | 2002-10-17 |
WO2002083324A3 (de) | 2003-05-08 |
US6902621B2 (en) | 2005-06-07 |
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