EP1191144A1 - Appareil d'enduction du rideau - Google Patents

Appareil d'enduction du rideau Download PDF

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Publication number
EP1191144A1
EP1191144A1 EP01119808A EP01119808A EP1191144A1 EP 1191144 A1 EP1191144 A1 EP 1191144A1 EP 01119808 A EP01119808 A EP 01119808A EP 01119808 A EP01119808 A EP 01119808A EP 1191144 A1 EP1191144 A1 EP 1191144A1
Authority
EP
European Patent Office
Prior art keywords
material web
deflection
edge strip
application
curtain
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
Application number
EP01119808A
Other languages
German (de)
English (en)
Other versions
EP1191144B1 (fr
Inventor
Richard Bernert
Manfred Ueberschär
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 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 Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1191144A1 publication Critical patent/EP1191144A1/fr
Application granted granted Critical
Publication of EP1191144B1 publication Critical patent/EP1191144B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • D21H23/46—Pouring or allowing the fluid to flow in a continuous stream on to the surface, the entire stream being carried away by the paper
    • D21H23/48—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 applying liquid or pasty application medium on a running material web, comprising a Curtain application work, which the order medium as essentially gravity moving curtain or veil on the Dispenses material web, and a device which is at least a complete Covering at least one of the edge strips of the material web a predetermined width prevented.
  • Such a device is for example from WO 98/48113 known.
  • this device that is on the edge of the Excess application medium applied according to a material web the first embodiment is vacuumed off from these edge strips again, while according to an alternative second embodiment, panel elements are provided which the order medium in the area of Catch edge strips and so a wetting of the edge strips with application medium do not allow at all.
  • the desire for a reduction covering the edge strips with application medium or a complete one Avoiding such a covering of the verge is in the Justified by the fact that otherwise support elements, for example support rollers, Deflection elements, for example deflection rollers, or the like elements that come into contact with the material web laterally over themselves the application medium moving out the edges of the material web is dirty could become.
  • the devices in this case To clean these elements would be required, would not only be space need, but also increase the design effort and the Complicate the operation of the entire system.
  • a generic device solved in which the device, which at least a complete Covering at least one of the edge strips of the material web on one predetermined width prevents the at least one edge strip at least in the area of the curtain application from the material web level deflects.
  • the invention is based on the knowledge that only the Deflection of the edge strip from the material web level is sufficient to the degree of coverage or the coverage cross profile of the edge strip to determine or a covering of the verge fully avoid. Therefore, according to the invention can be susceptible to contamination Aperture elements as they are from the prior art discussed above were used to be completely dispensed with. As below will be explained in detail, the deflection device arranged and / or designed so that they are practically none Danger of contamination from the application medium curtain or application medium splash is exposed.
  • the Deflection device the amount and, if desired, the shape of the Deflection of the edge strip influenced.
  • edge strip is to remain completely uncovered, this can be done can be achieved in that the deflection device the edge strip deflects in such a way that it moves by one in the area of the application medium obtuse angle is deflected.
  • the margin is under the useful strip of the material web "folded” so that the useful strip quasi acts as a "panel element” that covers the edge strip prevented.
  • this "aperture element" is covered with
  • the application medium is not considered to be “dirt” to look at, but as a desired coating with Application medium.
  • the deflection device can Deflect edge strips mechanically.
  • the deflection device can comprise at least one deflection rod which from the side facing away from the direction of deflection onto the edge strip acts.
  • This deflecting rod can for example be one to the direction of travel the material web is pivotable substantially parallel axis be arranged, it at certain pivoting intervals or also infinitely swiveling can be fixed in the desired swivel positions can to adjust the degree of deflection of the edge strip.
  • Gradually increasing around the edge strip in the direction of travel of the material web can be a plurality such one arranged consecutively in the running direction of the material web Deflection rods may be provided.
  • the deflection device can also comprise at least one deflection bar, that of the direction of deflection opposite side acts on the edge strip and the edge strip increasingly in the direction of travel of the material web from the material web level deflects.
  • a deflection bar is particularly suitable for Influencing the shape of the deflection of the edge strip.
  • the at least one deflection bar or the at least one deflection bar are in sliding contact with the material web, it is preferred if it is made of a wear-resistant material are formed.
  • the at least one deflection rod or the at least one deflection bar on a holder preferably detachable, to be appropriate.
  • the at least one deflection bar or at least one deflection bar in Direction of the material web seen before the position of the curtain applicator is arranged or ends, preferably between about 1 cm and about 20 cm before the position of the curtain applicator.
  • the deflection device influences the edge strip in the area of the edge strip prevailing pressure, preferably air pressure.
  • the deflection device can, for example, at least one blowing device comprise, the blow nozzle preferably on the edge strip is directed.
  • the blowing nozzle at least one blowing device facing the direction of deflection Side of the material web to be directed to this transition area.
  • blowing devices can be used for deflection the edge strip and / or to stabilize the transition area between the edge strips and the remaining material web also suction devices be used.
  • the deflection device a web moisture influencing device which comprises the web of material specifically moistened in predetermined material web areas and / or dries.
  • This web moisture influencing device can advantageously on the transition area between the edge strips and the rest Act on material web.
  • the material web on their surface facing away from the direction of deflection is specifically moistened so that it swells up locally. Additionally or alternatively, it can be on your the surface facing the direction of deflection is specifically dried, so that it contracts there. This targeted moistening or / and Drying leads to a deformation causing the desired deflection the material web.
  • the relative position of the deflection device is adjustable with respect to the material web. It is possible to optimize the relative position during operation. Further the deflection device can also be used for the course of the material web certain area can be swiveled, for example around the retraction to enable or facilitate the material web.
  • a deflection or feedback device can basically be the same as those described above Alternative designs of the deflection device, just with the difference, that they are not the edge strip from the web level deflects, but leads back into this.
  • Fig. 1 is a first embodiment of an inventive Application device generally designated 10. It includes one in FIG. 1 only schematically shown curtain application work 12, which Application medium 14 in the form of a curtain or veil 16 essentially releases to the material web 18 due to gravity.
  • the web of material 18 moves in a direction essentially orthogonal to the plane of the drawing Direction L, in the illustrated embodiment in the drawing plane into it.
  • the aim of using such a curtain applicator 12 is to Material web 18 to apply exactly the amount of application medium that this should also remain (1: 1 order). This is different from that previously widespread way of working, in which the order medium with large excess was applied to the material web, the excess order medium then again from the Material web was scraped off.
  • the goal of this larger dimension is to have only one central section the application medium curtain 16 for coating the material web 18 use because the thickness of the application medium curtain 16 in the running direction L in the area of its edges 16a by constriction effects and the same is influenced and thus a coating of the material web 18 in the desired thickness or with the desired surface or Line weight cannot be ensured.
  • this is in the running direction L before the position of the curtain applicator 12 a deflection rod 20 by one to the running direction L in Axis A, which runs essentially parallel, is pivotably arranged.
  • This Deflection rod 20 can, as can be seen in FIGS. 1, 3 and 5, in different Swivel positions are fixed to different degrees to be able to act on the edge strip 18a of the material web 18.
  • the deflection rod 20 is with the material web 18 or with their edge strips 18a not yet in contact. This has 2 result that the material web 18 over its entire width, i.e. also in the area of the edge strip 18a with the same layer thickness of application medium 14 is covered.
  • the edge strip 18a with the material web Plane E includes an acute angle ⁇ . Due to the inclined position of the edge strip 18a relative to the direction of fall of the application medium curtain 16, this leads to a lower, ie more precisely to a decrease in the coverage of the material web 18 with application medium 14 towards the edge of the material web 18b (see FIG. 4).
  • the deflecting rod 20 becomes so strong against the edge strip 18a employed that this bent back under their usable area 1 8c is (obtuse angle ⁇ ; see FIG. 5), this usable area 1 8c acts quasi as a "panel element", which covers the edge strip 18a prevented while it is in a transition portion 18d between the Edge strip 18a and the useful strip 18c for a decreasing coverage the material web 18 comes with application medium 14 (see FIG. 6).
  • the edge strip 18a the material web 18 as it moves onto the curtain applicator 12 too kinked gradually to an excessive load the material web 18 by abruptly kinking the edge strip 18a to avoid. It is not necessary that the Edge strips 1 8a in the state of maximum deflection under the useful strips 1 8c of the material web 18 is folded back, as shown in FIG. 5 is.
  • the gradual deflection of the edge strip 18a can, for example by a plurality of one behind the other in the running direction L of the material web 18 arranged deflection bars 20 take place.
  • this plurality of deflecting rods 20 into a single one To summarize deflection bar, its angle of attack against the material web 18 or their edge strips 18a with progressive approach the position of the curtain applicator 12 increases.
  • the edge strip 18a is influenced in the direction of arrow R by influencing the air pressure which prevails in the region of the edge strip 18a on the surface 18e or / and the surface 18f of the material web 18 facing the application medium curtain 16 deflected.
  • a first blowing device 22 is provided which, on the side of the surface 18e, ejects the air (or another gas compatible with the application operation, for example nitrogen, carbon dioxide or the like) under pressure in the direction of the arrow P, onto the edge strip 18a.
  • Another blowing device 24 discharges compressed air on the side of the surface 18f in the direction of the arrow P 2 onto the transition region 18d between the edge strip 18a and the useful strip 18c of the material web 18 in order to ensure that the edge strip 18a bends at the desired location.
  • This stabilization of the transition region 18d can in principle also be ensured by a suction device 26 which sucks air out of this transition region 18d in the direction of the arrow P 3 .
  • a suction device 26 which sucks air out of this transition region 18d in the direction of the arrow P 3 .
  • the function of the blowing device 22 can also be replaced by a corresponding suction device on the other side of the material web 18.
  • the edge strip 18a is cut through targeted moistening or drying of the material web 18 deflected.
  • a moistening device 28 is provided on the side of the material web 18, which a humidification medium 30, preferably water, as a spray releases to the surface 18e of the material web 18.
  • the aim of this humidification is to target the material web 18 in the transition region 18d Bring sources.
  • a heating device 32 is on the other side associated with surface 18f the material web 18, which dries the material web 18 in a targeted manner. By this drying is intended to produce a desired contraction of the material web 18 be achieved.
  • the swelling of the material web associated with the moistening 18 and / or the contraction associated with the drying of the Material web 18 in the area of the respective surfaces 18e or 18f Material web 18 cause the material web 18 to bend in the direction of the arrow R.

Landscapes

  • Coating Apparatus (AREA)
  • Saccharide Compounds (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Formation And Processing Of Food Products (AREA)
EP01119808A 2000-09-22 2001-08-16 Appareil d'enduction du rideau Expired - Lifetime EP1191144B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10047167A DE10047167A1 (de) 2000-09-22 2000-09-22 Vorhang-Auftragsvorrichtung
DE10047167 2000-09-22

Publications (2)

Publication Number Publication Date
EP1191144A1 true EP1191144A1 (fr) 2002-03-27
EP1191144B1 EP1191144B1 (fr) 2003-11-26

Family

ID=7657347

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01119808A Expired - Lifetime EP1191144B1 (fr) 2000-09-22 2001-08-16 Appareil d'enduction du rideau

Country Status (5)

Country Link
US (1) US6454859B1 (fr)
EP (1) EP1191144B1 (fr)
JP (1) JP2002102769A (fr)
AT (1) ATE255189T1 (fr)
DE (2) DE10047167A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007000777A1 (de) 2007-09-27 2009-04-02 Voith Patent Gmbh Auftragsvorrichtung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10359677A1 (de) 2003-12-18 2005-07-14 Voith Paper Patent Gmbh Verfahren zum einseitigen oder beidseitigen Vorhang- oder Schleierauftrag auf die Oberfläche einer laufenden Materialbahn, insbesondere aus Papier oder Karton
DE102005036667A1 (de) 2005-08-04 2007-02-08 Voith Patent Gmbh Auftragsverfahren
JP5292623B2 (ja) * 2007-09-12 2013-09-18 ボイス パテント ゲーエムベーハー カーテンコータのエッジ処理装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998048113A1 (fr) * 1997-04-21 1998-10-29 Jagenberg Papiertechnik Gmbh Procede et dispositif pour appliquer un bain de couchage au pigment sur une bande de papier ou de carton
WO1998047630A1 (fr) * 1997-04-21 1998-10-29 Bachofen + Meier Ag Maschinenfabrik Procede et dispositif pour appliquer des dispersions sur une bande de materiau
WO1999009253A2 (fr) * 1997-08-15 1999-02-25 Jagenberg Papiertechnik Gmbh Procede et dispositif permettant d'appliquer un enduit pigmente sur une bande de papier ou de carton
JP2001087694A (ja) * 1999-09-22 2001-04-03 Ishikawajima Harima Heavy Ind Co Ltd カーテンコータのカラー裏回り防止方法及び装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3300150A1 (de) * 1983-01-04 1984-07-05 Agfa-Gevaert Ag, 5090 Leverkusen Verfahren und vorrichtung zur stabilisierung von frei fallenden fluessigkeitsvorhaengen
US4559896A (en) * 1983-09-15 1985-12-24 Ciba Geigy Corporation Coating apparatus
FI81400C (fi) 1984-10-25 1990-10-10 Valmet Oy Foerfarande och anordning i en pappersmaskin i kilutrymmet mellan inloppslaodans laeppbalk och broestvalsen.
DE3605613A1 (de) 1986-02-21 1987-08-27 Jagenberg Ag Streichvorrichtung zum beschichten von warenbahnen
US4830887A (en) * 1988-04-22 1989-05-16 Eastman Kodak Company Curtain coating method and apparatus
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
DE19735588A1 (de) * 1997-04-21 1999-02-18 Jagenberg Papiertech Gmbh Verfahren und Vorrichtung zum Auftragen einer Pigmentstreichfarbe auf eine Papier- oder Kartonbahn

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998048113A1 (fr) * 1997-04-21 1998-10-29 Jagenberg Papiertechnik Gmbh Procede et dispositif pour appliquer un bain de couchage au pigment sur une bande de papier ou de carton
WO1998047630A1 (fr) * 1997-04-21 1998-10-29 Bachofen + Meier Ag Maschinenfabrik Procede et dispositif pour appliquer des dispersions sur une bande de materiau
WO1999009253A2 (fr) * 1997-08-15 1999-02-25 Jagenberg Papiertechnik Gmbh Procede et dispositif permettant d'appliquer un enduit pigmente sur une bande de papier ou de carton
JP2001087694A (ja) * 1999-09-22 2001-04-03 Ishikawajima Harima Heavy Ind Co Ltd カーテンコータのカラー裏回り防止方法及び装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 200133, Derwent World Patents Index; Class F09, AN 2001-314590, XP002179456 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007000777A1 (de) 2007-09-27 2009-04-02 Voith Patent Gmbh Auftragsvorrichtung

Also Published As

Publication number Publication date
DE10047167A1 (de) 2002-04-11
US20020035964A1 (en) 2002-03-28
ATE255189T1 (de) 2003-12-15
JP2002102769A (ja) 2002-04-09
EP1191144B1 (fr) 2003-11-26
US6454859B1 (en) 2002-09-24
DE50101017D1 (de) 2004-01-08

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