EP2158044A1 - Rakelvorrichtung - Google Patents
RakelvorrichtungInfo
- Publication number
- EP2158044A1 EP2158044A1 EP08760213A EP08760213A EP2158044A1 EP 2158044 A1 EP2158044 A1 EP 2158044A1 EP 08760213 A EP08760213 A EP 08760213A EP 08760213 A EP08760213 A EP 08760213A EP 2158044 A1 EP2158044 A1 EP 2158044A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- doctor
- transfer element
- bed
- doctor blade
- application medium
- 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.)
- Ceased
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
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
- B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
-
- 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
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/06—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with a blast of gas or vapour
Definitions
- the invention relates to a Rakelvorhchtung for metering and / or leveling of a liquid applied to a transfer element to pasty
- the transfer element such as an applicator roll or an endless belt
- the application medium transfers to a tangent to the transfer element and to be coated paper, cardboard, or other fibrous web.
- the doctor device has a doctor bed clamped in a holder with a groove in which a rotating, cylindrical doctor bar is accommodated, the doctor bed and thus the doctor bar being pressed or pressed against the carrier element.
- Such a device is known for example from DE 296 12 843.
- the machine speeds for producing and refining the fibrous web are very high today for reasons of economy. Therefore, it comes at these high machine speeds and beyond at high solids contents of the application medium (which may be pigmented coating color, but also a starch solution) for so-called rod spitting, during the doctoring or dosing of the previously applied in an indirect manner medium where the im Doctor blade recorded rotating doctor blade rolls on also rotating transfer element.
- the application medium which may be pigmented coating color, but also a starch solution
- EP 0 460 771 B1 discloses a solution which is applicable to direct-acting coating devices.
- the coated paper web is guided along a scraper or scraper blade along.
- stalagmite consisting of stripped coating compound mixed with fibrous particles from the paper web.
- stalagmites can break off, fall onto the paper web and cause damage there as well as on web-guiding or treating rollers.
- a Stalagmitöning liquid preferably water vapor
- the invention has for its object to provide a squeegee working with a doctor blade device for metering or leveling a applied to a transfer element application medium in which a so-called rod spitting and deposits do not occur, but at least are greatly reduced.
- the object of the invention is achieved in that a vapor deposition is provided with the steam jets are selectively directed to the outer circumference of the metering rod or on the top of the doctor bed, whereby so-called rod spitting and deposits of the coating medium on the doctor bed avoidable, or at least reduced ,
- the steam jets are preferably made of water vapor, which is abundant in the fibrous web making machine and is easier to handle Transfer via a suction and transport pipe system to the doctor device.
- the vapor deposition device is preferably arranged above the doctor bed. From this position, it is easiest to control the steam jets to be dispensed on the doctor blade outer circumference or on the upper side of the doctor bed.
- the vapor deposition device is designed as a tube rotatable about its longitudinal axis and is provided with at least one discharge opening for the steam jets.
- the vapor jets can be selectively directed either only to the top of the doctor bed - to avoid deposits there - or to the doctor rod circumference - here to avoid the said rod spitting - act.
- the steaming device or the tube corresponds approximately to the length of the doctor bed and the metering rod received therein and has a multiplicity of discharge openings arranged next to one another. It is conceivable that individual beams can be emitted with different intensity.
- the vaporization device or the tube has a substantially smaller length than the doctor bed and the metering rod received therein.
- This short tube then has, for example, only one or a few vapor discharge openings and is traversing over the said length of the doctor bed and of the doctor bar (ie transversely to the longitudinal extent of the doctor device and also to the running direction of the fibrous web). This makes it possible to react very quickly to zonal deposits of different degrees or bar pudding.
- the device according to the invention is particularly suitable for film presses with which an application medium is applied in an indirect manner to one or both sides of the web of a paper, board or other fibrous web.
- the operating window can thus be extended considerably. This means that there are higher solids contents of the application medium (coating color with predominantly carbonate content greater than 65%, coating color with predominantly kaolin content greater than 58%) and also higher machine speeds (for example up to more than 2000 m / min) than hitherto possible.
- the metering rod used can thereby exercise its function longer in the doctor bed, which extend cleaning cycles and thus operating stoppages are less frequently necessary.
- line errors in the indirectly applied to the fibrous web layer can be significantly reduced.
- the production of the fibrous web is significantly more economical than before and the quality of the produced web material.
- Figure 1 a schematic representation of a doctor device according to the invention in section
- FIG. 2 shows an application example of the device shown in FIG. 1 in a schematic side view
- FIG. 1 shows a squeegee device 1 which bears a contact force F against a transfer element 2, i. an applicator roll 3 is pressed.
- the doctor device 1 has a holder 4, in which a doctor bed 5 is clamped in the example at its foot part 5.1.
- the doctor bed 5 points in the example chosen also an opposite the foot part 5.1 extended head section 5.2 with a concave groove 5.3 on.
- the groove 5.3 is limited by an outlet-side and inlet-side lip 5.4 and 5.5.
- a cylindrical metering rod 6 is rotatably received, with which the metered onto the transfer element 2 and the applicator roll 3 (or on an endless belt) in excess application medium 7 dosed or scraped and / or homogenized.
- the direction of rotation of the metering rod 6 is indicated by a double arrow DR.
- the direction of rotation DL) of the transfer element 2 is indicated by an arrow.
- an above the doctor bed 5 and arranged in parallel to this evaporation device 11 is provided with a Dampfzu réelletechnisch 12 steam jets 13 optional - depending on the set rotational position of the device 11 to the desired area are directable.
- a Dampfzu réelletechnisch 12 steam jets 13 optional - depending on the set rotational position of the device 11 to the desired area are directable.
- rays 12 deposits 9 of the coating medium 7 on the doctor bed 5 avoided, or at least reduced.
- the position Il is shown in dashed lines in Figure 1.
- the vapor deposition device 11 is formed as a pipe 11 b rotatable about its longitudinal axis 11 a and with at least one discharge opening 11 c for the steam jets 12 provided.
- the vapor deposition device 11 or the tube 11 b is made in accordance with the length of the doctor blade bed 5 and the metering rod 6 accommodated therein and has a multiplicity of discharge openings 11 c arranged next to one another.
Landscapes
- Paper (AREA)
- Coating Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710027817 DE102007027817A1 (de) | 2007-06-13 | 2007-06-13 | Rakelvorrichtung |
PCT/EP2008/056622 WO2008151943A1 (de) | 2007-06-13 | 2008-05-29 | Rakelvorrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2158044A1 true EP2158044A1 (de) | 2010-03-03 |
Family
ID=39768676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08760213A Ceased EP2158044A1 (de) | 2007-06-13 | 2008-05-29 | Rakelvorrichtung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2158044A1 (de) |
JP (1) | JP3165023U (de) |
DE (1) | DE102007027817A1 (de) |
WO (1) | WO2008151943A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009026495A1 (de) | 2009-05-27 | 2010-12-02 | Voith Patent Gmbh | Rakelvorrichtung |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5106655A (en) * | 1989-01-27 | 1992-04-21 | Measurex Corporation | Cross-directional smoothness controller and method of using the same |
NL9001303A (nl) | 1990-06-08 | 1992-01-02 | Knp Papier Bv | Inrichting en werkwijze voor het voorkomen van aangroei op het afstrijkorgaan van een papierstrijkmachine. |
FI925704A (fi) * | 1992-12-15 | 1994-06-16 | Valmet Paper Machinery Inc | Menetelmä ja laitteisto telan pinnan päällystämiseksi |
FI93242C (fi) * | 1993-03-25 | 1995-03-10 | Valmet Paper Machinery Inc | Menetelmä ja laitteisto päällystysleveyden rajoittamiseksi ja/tai telapäätyjen vaurioitumisen estämiseksi paperin tai vastaavan rainamateriaalin päällystyksessä tai pintaliimauksessa |
AT830U1 (de) * | 1995-07-03 | 1996-06-25 | Voith Ag J M | Luftmesserstreichaggregat |
DE29612843U1 (de) | 1996-07-24 | 1996-09-26 | Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim | Auftragwerk zum direkten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton |
DE19722159A1 (de) * | 1997-05-27 | 1998-12-03 | Voith Sulzer Papiermasch Gmbh | Verfahren und Vorrichtung zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Auftragsmediums auf eine laufende Oberfläche |
DE19800955A1 (de) * | 1998-01-13 | 1999-07-15 | Voith Sulzer Papiertech Patent | Vorrichtung zum Auftragen eines flüssigen oder pastösen Auftragsmediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton |
DE19800954A1 (de) * | 1998-01-13 | 1999-07-15 | Voith Sulzer Papiertech Patent | Vorrichtung zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Auftragsmediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton |
FI111230B (fi) * | 1998-05-20 | 2003-06-30 | Metso Paper Inc | Filminsiirtopäällystimen applikointilaite ja menetelmä applikointikammion tulopuolen rajaavan elimen voitelemiseksi |
DE10245074A1 (de) * | 2002-09-27 | 2004-04-01 | Voith Paper Patent Gmbh | Rakeleinrichtung |
JP2004128214A (ja) * | 2002-10-02 | 2004-04-22 | Sharp Corp | 回転塗布装置および回転塗布方法 |
-
2007
- 2007-06-13 DE DE200710027817 patent/DE102007027817A1/de not_active Withdrawn
-
2008
- 2008-05-29 EP EP08760213A patent/EP2158044A1/de not_active Ceased
- 2008-05-29 JP JP2010600020U patent/JP3165023U/ja not_active Expired - Fee Related
- 2008-05-29 WO PCT/EP2008/056622 patent/WO2008151943A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2008151943A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP3165023U (ja) | 2011-01-06 |
DE102007027817A1 (de) | 2008-12-18 |
WO2008151943A1 (de) | 2008-12-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0533035B1 (de) | Vorrichtung zum Auftragen von Streichfarbe auf eine Faserstoffbahn | |
EP0928845A2 (de) | Vorrichtung zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Auftragsmediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton | |
EP2535450B1 (de) | Vorrichtung zum Auftragen von Oberflächenmitteln, insbesondere Schlichte oder Farbe, auf ein Textilgut in Fadenvorlage | |
DE112007001442B4 (de) | Verfahren und Vorrichtung zur Behandlung einer Faserbahn | |
EP3842591A1 (de) | Vorrichtung zum auftragen eines auftragsmediums | |
EP0919665A2 (de) | Vorrichtung zum indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine Materialbahn, insbesondere aus Papier oder Karton | |
DE19606459A1 (de) | Verfahren und Vorrichtungen zum Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn | |
DE69934899T2 (de) | Steuerungsverfahren der verschmutzung für zylindertrockner in papiermaschinen | |
DE4444779A1 (de) | Vorrichtung zum Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton | |
DE19634448A1 (de) | Verfahren und Vorrichtung zum Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn | |
EP2277630B1 (de) | Vorrichtung zum Beschichten einer durchlaufenden Bahn | |
DE4211401A1 (de) | Beschichtungseinrichtung für Bahnen aus Papier oder Karton | |
WO1994017244A1 (de) | Verfahren und vorrichtung zum streichen einer papierbahn | |
DE9111669U1 (de) | Vorrichtung zum Auftragen von Streichfarbe auf eine Faserstoffbahn | |
EP2158044A1 (de) | Rakelvorrichtung | |
EP0812957A1 (de) | Verfahren und Vorrichtung zur Beschichtung einer laufenden Materialbahn | |
DE4118076A1 (de) | Verfahren und vorrichtung zum schlichten von webketten aus textilen garnen | |
DE102009008589B4 (de) | Verfahren und Anordnung zur Herstellung von mehrschichtig gestrichenem Papier | |
EP0666370A1 (de) | Verfahren zum wenigstens einseitigen Beschichten einer Faserstoffbahn mit einem Auftragsmedium und Vorrichtung zur Durchführung des Verfahrens | |
EP1733802A1 (de) | Vorrichtung zum Auftragen von flüssigen bis pastösen Suspensionen auf Papier- oder Kartonbahnen | |
DE29610395U1 (de) | Vorrichtung zum aufeinanderfolgenden Auftragen von zwei Schichten von flüssigen oder pastösen Medien auf eine Seite einer laufenden Materialbahn | |
DE19960772A1 (de) | Auftragsverfahren | |
DE102022105518B4 (de) | Auftragsdüse, Auftragswerk und Verfahren | |
DE19743246A1 (de) | Kombinations-Auftragsvorrichtung | |
DE102022105510B4 (de) | Auftragsdüse, Auftragswerk und Verfahren |
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 |
|
17P | Request for examination filed |
Effective date: 20100113 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20101027 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R003 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
18R | Application refused |
Effective date: 20110425 |