EP1475477A3 - Apparatus for applying directly a fluid or pasty coating onto a moving web - Google Patents

Apparatus for applying directly a fluid or pasty coating onto a moving web Download PDF

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Publication number
EP1475477A3
EP1475477A3 EP04101894A EP04101894A EP1475477A3 EP 1475477 A3 EP1475477 A3 EP 1475477A3 EP 04101894 A EP04101894 A EP 04101894A EP 04101894 A EP04101894 A EP 04101894A EP 1475477 A3 EP1475477 A3 EP 1475477A3
Authority
EP
European Patent Office
Prior art keywords
support surface
material web
web
gusset
blade element
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
Application number
EP04101894A
Other languages
German (de)
French (fr)
Other versions
EP1475477A2 (en
Inventor
Ingo Gottwald
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
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 filed Critical Voith Patent GmbH
Publication of EP1475477A2 publication Critical patent/EP1475477A2/en
Publication of EP1475477A3 publication Critical patent/EP1475477A3/en
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/32—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming a linkage containing silicon in the main chain of the macromolecule
    • 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
    • D21H23/30—Pretreatment of the paper

Abstract

Die Erfindung betrifft eine Vorrichtung zum direkten Auftragen eines flüssigen oder pastösen Mediums (M) auf eine laufende Materialbahn (2), insbesondere eine Faserstoffbahn aus Papier oder Karton. Diese Vorrichtung umfasst eine von der Materialbahn (2) teilweise umschlungene drehbare Stützfläche (3), wie beispielsweise ein Stützband oder eine Stützwalze, welche eine der Stützfläche (3) zugewandte Seite (2a) der Materialbahn (2) stützt, wobei die Stützfläche (3) und die Materialbahn (2) einen sich keilförmig verjüngenden Einlaufzwickel (4) und einen Auslaufzwickel (5) bilden. Die Vorrichtung umfasst außerdem wenigstens ein der Stützfläche (3) zugeordnetes Auftragswerk (6) und eine, bezogen auf die Drehrichtung der Stützfläche (3) vor dem Auftragswerk (6) angeordnete Einrichtung (7) zur Entfernung, zumindest aber Schwächung einer von der Stützfläche (3) und/oder der Materialbahn (2) mitgeführten Luftgrenzschicht (10), wobei die Einrichtung (7) zwischen der Stützfläche (3) und der der Stützfläche (3) zugewandten Seite (2a) der Materialbahn (2) im Einlaufzwickel (4) angeordnet ist.
Erfindungsgemäß ist vorgesehen, dass die Einrichtung (7) als eine den Einlaufzwickel (4) in annähernd radialer Richtung zur Stützfläche (3) überspannende Baugruppe aufgebaut ist, bestehend aus einer die Materialbahnseite (2a) berührenden Leiste (8) und einem Klingenelement (11). Die Leiste (8) und das Klingenelement (11) erstrecken sich quer zur Bahnlaufrichtung (L) und sind mindestens der Breite des Auftragswerkes (6) angepasst. Das Klingenelement (11) ragt mit seiner stromabwärtigen Seite (11a) derart in den Einlaufzwickel (4) hinein, dass zwischen seinem stromabwärtigen Ende (11a) und der Stützfläche (3) ein minimaler Spalt (12) verbleibt.

Figure imgaf001
The invention relates to a device for direct application of a liquid or pasty medium (M) on a moving material web (2), in particular a fibrous web of paper or cardboard. This device comprises a rotatable support surface (3) partially looped around by the material web (2), such as a support belt or a support roller which supports a side (2a) of the material web (2) facing the support surface (3), the support surface (3 ) and the material web (2) form a wedge-shaped tapering inlet gusset (4) and an outlet gusset (5). The apparatus further comprises at least one application unit (6) associated with the support surface (3) and a device (7) arranged in front of the applicator unit (6) with respect to the direction of rotation of the support surface (3) for removal, or at least weakening, of one of the support surface (3). 3) and / or the material web (2) entrained air boundary layer (10), wherein the means (7) between the support surface (3) and the support surface (3) facing side (2a) of the material web (2) in the inlet gusset (4) is arranged.
According to the invention, the device (7) is constructed as an assembly spanning the inlet gusset (4) in an approximately radial direction to the support surface (3), consisting of a strip (8) which contacts the material web side (2a) and a blade element (11). , The strip (8) and the blade element (11) extend transversely to the web running direction (L) and are at least the width of the commissioned work (6) adapted. The blade element (11) projects with its downstream side (11a) into the inlet gusset (4) in such a way that a minimal gap (12) remains between its downstream end (11a) and the support surface (3).
Figure imgaf001
EP04101894A 2003-05-06 2004-05-04 Apparatus for applying directly a fluid or pasty coating onto a moving web Ceased EP1475477A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003119992 DE10319992A1 (en) 2003-05-06 2003-05-06 Device for the direct application of a liquid or pasty medium to a running material web
DE10319992 2003-05-06

Publications (2)

Publication Number Publication Date
EP1475477A2 EP1475477A2 (en) 2004-11-10
EP1475477A3 true EP1475477A3 (en) 2009-07-22

Family

ID=32981220

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04101894A Ceased EP1475477A3 (en) 2003-05-06 2004-05-04 Apparatus for applying directly a fluid or pasty coating onto a moving web

Country Status (2)

Country Link
EP (1) EP1475477A3 (en)
DE (1) DE10319992A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0855464A2 (en) * 1997-01-24 1998-07-29 Voith Sulzer Papiermaschinen GmbH Apparatus and process for applying directly or indirectly a liquid or pasty medium onto a moving web
DE19827712A1 (en) * 1998-06-22 1999-12-23 Voith Sulzer Papiertech Patent Device for the direct or indirect application of a liquid or pasty application medium to a running material web
DE19829449A1 (en) * 1998-07-01 2000-01-05 Voith Sulzer Papiertech Patent Application device and application method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI93377C (en) 1993-01-13 1995-03-27 Valmet Paper Machinery Inc A method and arrangement for preventing air from entering between a moving material web and a roll
DE19502605A1 (en) * 1995-01-29 1996-08-01 Henrich Heidemaria Dipl Ing Fh Jacketed heat exchanger with lid and container

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0855464A2 (en) * 1997-01-24 1998-07-29 Voith Sulzer Papiermaschinen GmbH Apparatus and process for applying directly or indirectly a liquid or pasty medium onto a moving web
DE19827712A1 (en) * 1998-06-22 1999-12-23 Voith Sulzer Papiertech Patent Device for the direct or indirect application of a liquid or pasty application medium to a running material web
DE19829449A1 (en) * 1998-07-01 2000-01-05 Voith Sulzer Papiertech Patent Application device and application method

Also Published As

Publication number Publication date
DE10319992A1 (en) 2004-11-25
EP1475477A2 (en) 2004-11-10

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