EP1593439A2 - Dispositif pour appliquer un produit de revêtement liquide ou pateux sur une bande en mouvement - Google Patents

Dispositif pour appliquer un produit de revêtement liquide ou pateux sur une bande en mouvement Download PDF

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Publication number
EP1593439A2
EP1593439A2 EP05101954A EP05101954A EP1593439A2 EP 1593439 A2 EP1593439 A2 EP 1593439A2 EP 05101954 A EP05101954 A EP 05101954A EP 05101954 A EP05101954 A EP 05101954A EP 1593439 A2 EP1593439 A2 EP 1593439A2
Authority
EP
European Patent Office
Prior art keywords
metering
metering rod
doctor device
sealing
doctor
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Withdrawn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
EP05101954A
Other languages
German (de)
English (en)
Other versions
EP1593439A3 (fr
Inventor
Martin Kustermann
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.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Voith Paper Patent 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 Voith Patent GmbH, Voith Paper Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1593439A2 publication Critical patent/EP1593439A2/fr
Publication of EP1593439A3 publication Critical patent/EP1593439A3/fr
Withdrawn legal-status Critical Current

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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
    • B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
    • B05C3/18—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material only one side of the work coming into contact with 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
    • 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
    • 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
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/10—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with blades

Definitions

  • the invention relates to a device for applying a liquid or pasty Application medium on a running surface, with the substrate in direct Order is the surface of a paper, cardboard or other fibrous web or for indirect application, the surface of a transmission element, for example a transfer roller, which is the application medium to the fibrous web transfers, with the application medium in an application chamber on the current Substrate is applicable, and the application chamber in the direction of the ground considered, inlet side of a sealing doctor device and the outlet side of a Dosierrakelvorraum, each provided with a metering rod is limited.
  • DE 202 18 781 U1 and EP 1 070 550 A2 are generic Devices known. These devices arrive at the inlet side Doctor blade contaminants, such as fibers in the application chamber. and gather there. Because only a limited proportion of the accumulated Contaminants can leave the application chamber on the outlet-side metering rod, increases the density of impurities in the application chamber. If the Impurities in the application chamber have reached a certain density decreases the quality of the coating layer resulting from the application chamber. The consequence of this, for example, a streaky order, defects and to be like that.
  • the invention has the object of a device of the type mentioned be improved so that in the future of existing in the contracting chamber Impurities resulting quality losses in the applied Application layer can be reduced.
  • the invention solves this problem by a device of the generic type, in which according to the invention the outlet side arranged metering rod of Dosierrakelvorraum has a higher passability for the applied liquid to pasty application medium, as the inlet side arranged metering rod.
  • the metering rod of the metering doctor device that is to say the metering rod arranged on the outlet side, having a larger diameter than the metering rod of the sealing doctor device.
  • the inventor has realized that the larger the diameter of the metering rod of the metering doctor device, the gentler the inlet gap between the running substrate and said metering rod diameter. This results in an elongated, shallow channel in which no or hardly any backflow of the application medium is possible at the end.
  • the doctor blade of the metering doctor device and the doctor blade of the sealing doctor device can both have a smooth surface or both have a profiled surface.
  • the profiled metering rod of the sealing doctor device has the advantage that it better prevents the entry of contaminants into the application chamber, since it comes with its profile tips either directly into contact with the running ground or forms only a small gap between the metering rod and the running underground.
  • the smooth doctor rod of the doctor blade device has a constant gap over its entire length in the cross-machine direction, which thus ensures reliable discharge of the impurities from the application chamber.
  • the root of the Ratios of the diameter of the metering rod of the doctor blade device and the Diameter of the metering rod of the sealing doctor device a value of at least 1.15. If this value is at least 1.15 with the inventive Device achieved a good quality of the applied layer.
  • the diameter of the metering rod the metering blade device with 24 mm and the metering rod of the sealing doctor device with 10 mm is selected.
  • the invention relates to a generic device in which According to the invention, the metering rod of the sealing doctor device with a higher Line pressing against the running underground is pressable as the squeegee bar Dosierrakelvorraum.
  • the gap between the running underground and the doctor blade of the sealing doctor device as small as possible, so as small as possible Impurities enter the application chamber and the gap between the running surface and the doctor bar of Dosierrakelvorraum as large as possible, so that the impurities which have entered the application chamber are optimally removed can be.
  • This solution is useful if it is not for some reason it is possible to use a metering rod of the metering doctor device, which is larger as the metering rod of the sealing doctor device.
  • the invention relates to a further generic device in which according to the invention at the sealing doctor blade a metering rod with a profiled Surface and on the metering doctor blade a doctor blade with a smooth Surface is arranged. Since the doctor rod with the profiled, in particular grooved surface the surface of the running underground only partially (to the Grooved outer surfaces) touched, whereas the smooth doctor rod always on one floats continuous film and thus always has gap, is therefore the Entry of impurities reduced and leakage of impurities improved. This optimizes the quality of the applied layer.
  • doctor bar of the sealing doctor device has only a small profile height, can be achieved by him an increased sealing effect.
  • the unwanted entry This can significantly reduce contamination in the application chamber become.
  • the surface of the coated layer can be improved if the Doctor blade of Dosierrakelvorplatz has a larger diameter than the Doctor blade of the sealing doctor device.
  • the metering rod of the sealing doctor device be rotated opposite to the direction of the ground. Then the to the gap between the surface of the metering rod of the sealing doctor device and the surface of the running underground supplied by the Doctor blade carried away from the gap, so they are not in the application chamber can reach.
  • the squeegee bar the sealing doctor device As reliable as possible from the gap to the impurities by the metering rod between the surface of the metering rod of the sealing doctor device and the Surface of the running underground to be able to carry away, the squeegee bar the sealing doctor device a speed of more than 50 revolutions per minute exhibit. Particularly good results are achieved when the doctor bar of the Sealing device with a speed of rotation of at least 150 Turns per minute.
  • An application device 1 according to the invention is used for applying a Application medium 2; on a moving in the direction of arrow L underground 3 as a coating layer 4.
  • the substrate 3 is as shown here in the example, the surface of a fibrous web of paper or cardboard.
  • the application device 1 comprises an assembly 5, which is attached to a support body 6. In the support body 6 a in the transverse direction Q of the fibrous web or the substrate extending manifold 7 is arranged. This serves to supply and uniform distribution of the application medium 2 over the working width of the substrate 3.
  • the assembly 5 comprises two doctor devices, which together define an application chamber 8. The one doctor device is referred to as the "inlet side" sealing doctor device 9 with respect to the running direction of the substrate 3, where the substrate 3 of the doctor device approaches, and because this limits only the application chamber and exerts no actual squeegee function.
  • the other squeegee device is a real metering blade that strips off excess applied medium, that is, scrapes off.
  • the metering doctor device 10 is arranged at the point where the substrate 3 runs off the doctor device 10.
  • Both devices 9 and 10 have a roller blade, which can also be referred to as rotatable metering rod 11 and 12. So that in the application chamber 8 and especially in the application layer 4 no particles, impurities, etc. can accumulate as chunks, the outlet or outlet side is located at the Dosierrakelvoriques 10 with the metering rod 12 is designed so that here a higher passability the order medium is given. This can be practiced in various ways. So it is possible both doctor bars 11 and 12 smooth or profiled, ie grooved form.
  • the metering rod 12 has a larger diameter on the outlet side, that is to say that of the metering doctor device 10.
  • the diameter is then for example 24 mm, while the diameter of the sealing blade is only 10 mm.
  • different contact forces can be set.
  • Another way to achieve a higher passability on the drain side can also be done with differently shaped surface properties.
  • a metering rod 11 with a profiled and at the Dosierrakelvorraum 10 a metering rod 12 is arranged with a smooth surface on the sealing doctor device 9.
  • a direction of rotation of the inlet-side metering rod 9 in opposite directions to the direction of rotation of the substrate 3 is advantageous.
  • its speed should be higher than 50, especially higher than 150 1 / min.

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  • Coating Apparatus (AREA)
EP05101954A 2004-04-23 2005-03-14 Dispositif pour appliquer un produit de revêtement liquide ou pateux sur une bande en mouvement Withdrawn EP1593439A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004019960A DE102004019960A1 (de) 2004-04-23 2004-04-23 Vorrichtung zum Auftragen eines flüssigen oder pastösen Auftragsmediums auf einen laufenden Untergrund
DE102004019960 2004-04-23

Publications (2)

Publication Number Publication Date
EP1593439A2 true EP1593439A2 (fr) 2005-11-09
EP1593439A3 EP1593439A3 (fr) 2010-12-29

Family

ID=34938964

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05101954A Withdrawn EP1593439A3 (fr) 2004-04-23 2005-03-14 Dispositif pour appliquer un produit de revêtement liquide ou pateux sur une bande en mouvement

Country Status (2)

Country Link
EP (1) EP1593439A3 (fr)
DE (1) DE102004019960A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1896259B2 (fr) † 2005-05-13 2014-10-29 Basf Se Procede de production d'elements composites a base de materiaux isolants thermiques mineraux ou organiques, au moyen d'un adhesif

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3620374A1 (de) * 1985-08-07 1987-02-12 Valmet Oy Vorrichtung zur beschichtung einer materialbahn
DE19652289A1 (de) * 1996-12-16 1998-06-18 Voith Sulzer Papiermasch Gmbh Vorrichtung zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton
EP1070550A2 (fr) * 1999-07-22 2001-01-24 Voith Paper Patent GmbH Dispositif pour appliquer directement ou indirectement un produit de revêtement liquide ou pateux sur une bande en mouvement, notamment une bande de papier ou de carton
DE20218781U1 (de) * 2001-12-04 2003-02-27 Metso Paper Inc Wiege
US20040009299A1 (en) * 1992-09-11 2004-01-15 Damrau Wayne A. Apparatus for decreasing skip coating on a peper web
US20080063805A1 (en) * 2003-01-17 2008-03-13 Fujifilm Corporation Coating apparatus and coating method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3620374A1 (de) * 1985-08-07 1987-02-12 Valmet Oy Vorrichtung zur beschichtung einer materialbahn
US20040009299A1 (en) * 1992-09-11 2004-01-15 Damrau Wayne A. Apparatus for decreasing skip coating on a peper web
DE19652289A1 (de) * 1996-12-16 1998-06-18 Voith Sulzer Papiermasch Gmbh Vorrichtung zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton
EP1070550A2 (fr) * 1999-07-22 2001-01-24 Voith Paper Patent GmbH Dispositif pour appliquer directement ou indirectement un produit de revêtement liquide ou pateux sur une bande en mouvement, notamment une bande de papier ou de carton
DE20218781U1 (de) * 2001-12-04 2003-02-27 Metso Paper Inc Wiege
US20080063805A1 (en) * 2003-01-17 2008-03-13 Fujifilm Corporation Coating apparatus and coating method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1896259B2 (fr) † 2005-05-13 2014-10-29 Basf Se Procede de production d'elements composites a base de materiaux isolants thermiques mineraux ou organiques, au moyen d'un adhesif

Also Published As

Publication number Publication date
EP1593439A3 (fr) 2010-12-29
DE102004019960A1 (de) 2005-11-17

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