EP2846930B1 - Dispositif pour niveler et établir l'épaisseur d'une couche d'agent liquide étalée sur une matière - Google Patents

Dispositif pour niveler et établir l'épaisseur d'une couche d'agent liquide étalée sur une matière Download PDF

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Publication number
EP2846930B1
EP2846930B1 EP13728260.4A EP13728260A EP2846930B1 EP 2846930 B1 EP2846930 B1 EP 2846930B1 EP 13728260 A EP13728260 A EP 13728260A EP 2846930 B1 EP2846930 B1 EP 2846930B1
Authority
EP
European Patent Office
Prior art keywords
web
liquid agent
blade
knife
module
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.)
Active
Application number
EP13728260.4A
Other languages
German (de)
English (en)
Other versions
EP2846930A1 (fr
Inventor
Jan KRÓL
Krzysztof WNEK
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.)
Schattdecor Sp zoo
Original Assignee
Schattdecor Sp zoo
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 Schattdecor Sp zoo filed Critical Schattdecor Sp zoo
Priority to PL13728260T priority Critical patent/PL2846930T3/pl
Publication of EP2846930A1 publication Critical patent/EP2846930A1/fr
Application granted granted Critical
Publication of EP2846930B1 publication Critical patent/EP2846930B1/fr
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Anticipated expiration legal-status Critical

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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
    • 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
    • B05C11/04—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 blades
    • B05C11/041—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 blades characterised by means for positioning, loading, or deforming the blades
    • 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
    • D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
    • D21H23/56—Rolls
    • 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 subject of the invention is a device for levelling and establishing the thickness of a liquid agent layer applied to a web of moving coated or lacquered material.
  • This solution relates in particular to levelling and establishing the thickness of a layer of lacquer or impregnating agent applied to pre-impregnated decorative paper or to film base.
  • the device may also be used for coating other papers, films and materials.
  • the known devices for the implementation of this goal consist of: a module applying a liquid agent to a web of moving material, comprising, inter alia, applying elements and rollers, a module pulling the web with the applied layer of the liquid agent, ensuring relative movement between the material and the module applying the liquid agent with the use of a system of rollers, and a blade placed behind the module applying the agent in the direction of movement of the material, ensuring a resistance of the flow and wiping off the excess of the agent from the material in such a manner as to ensure a layer with a defined surface and thickness.
  • the module applying a liquid agent comprises, inter alia, a roll applying a liquid agent to the material, called an applicator roll and a tank with a liquid agent.
  • Blades are used for wiping off the excess of a liquid agent and controlling both its quantity and thickness of the coat and they are in the form of steel round rotary rods made of stainless steel, wound tightly with nickel-chromium steel wire of varying diameter.
  • the wet layer thickness after scraping depends on the diameter of the wire used to wind the roller and is approximately 0.1 times the wire diameter.
  • the dry layer thickness of the applied agent depends on the solids concentration of the coating agents.
  • the module pulling the web with the applied layer of a liquid agent in the Meyer Bar method consists of multiple drive rollers for guiding, pulling and supporting and distributing the web of material to subsequent modules of the device.
  • the blade is mounted on a supporting cradle and placed in the space between the applicator roll of the module for applying the liquid agent from the tank to the material and the pulling roll which is an element of the pulling module of the device, located on the opposite side of the blade in relation to the applicator roll.
  • the disadvantages of the Meyer Bar method are considered to include the limited evenness of the applied agent, low speed of its application, sensitivity to the aquaplaning phenomenon at higher speeds and lack of elimination of defects of the base material.
  • the second known method the so-called blade chamber, consists in applying lacquer to material using an applying screen roll, to which a blade chamber is pressed and to which the applied agent is fed under pressure.
  • the applying screen roll with ink carriers placed on its surface and filled with the applied agent, rotates in a direction reverse to a travel direction of the material web.
  • the material is placed against the screen roll by a press roller at a specific distance, but without pressure, and the applied agent is rubbed into the coated material.
  • the module applying a liquid agent comprises: a Blade chamber, a screen roll and a press roller (positioning roller), and the module pulling the web with the applied layer of a liquid agent consists of at least a drive roller and guide rollers.
  • the blades are knife-shaped and form the edges of the pressure chamber. After pressing the screen roll they form a hermetic dosing system.
  • the disadvantages of this method include relatively difficult and complicated operations related to the retooling, part replacement and maintenance of the device, sensitivity to contamination and lack of sufficient elimination of defects of the base material.
  • the apparatus in this case does not have a roll applying a liquid agent from the tank, but an applicator module with a narrow orifice-slot extending in a cross-machine direction for facilitating high-speed laminar flow of coating mix into a gap region defined by confronting surfaces of the applicator apparatus and the web.
  • the applicator apparatus has a member for directing the ejected coating mix in the gap region in a direction reverse to a travel direction of the web so that only a predetermined portion of the ejected coating mix is allowed to form an applied coat on the web.
  • This accurate premetering of the coating mix by the applicator apparatus permits an operator to readily optimize the subsequent process of doctoring the applied coating with an air knife. This method requires very complicated equipment and high process precision as well as the use of multiple control and regulation devices ensuring the maintaining of extremely high operating parameters.
  • the goal of the invention is the creation of a device enabling the maximum elimination of defects and unevenness of the created coat, related to the teleportation of defects and contamination of the rolls guiding the web and rolls cooperating with the blade, the ensuring the self-cleaning of the blade, the elimination of negative effects of aquaplaning and the use of this phenomenon as a method for establishing an even thickness of the applied coat.
  • a device for levelling and establishing the thickness of a liquid agent layer applied to coated or lacquered material according to claim 1 is provided.
  • the angle of positioning of the knife is within a range of 5°to 80°.
  • the width of the working area of the knife blade is within a range of 0.01mm to 15 mm.
  • Fig. 1 shows a schematic view of the device.
  • Fig. 2 presents the positioning of the knife against the material web, with the following marked: a liquid agent layer and a zone of increased hydrodynamic pressure, as well as a schematic run of scraping of the excess lacquer.
  • the device in the embodiment is designed to apply lacquer in a lacquering machine.
  • the material in the form of a preimpregnated foil web 1 is moved with a system of pulling, supporting and guiding rollers, located both in the part which forms the module pulling the web and the applicator module of the lacquering machine.
  • a blade in the form of a knife 4 is located between the applicator roll 2 of the lacquer applicator module and the pulling roller 3 of the module pulling the web 1 . It is located directly next to the pulling roller 3, however outside the space of wrapping of this roller by the web.
  • the applicator roll 2 is placed above the lacquering tank 5 with lacquer 6, located directly under the material web 1.
  • both the pulling module and the applicator module are equipped with additional guiding and supporting rollers.
  • the knife 4 is mounted on the adjustment mechanism 7 enabling the change of its positioning against the material web (up-down; front-rear; and angle of inclination).
  • the material web with a width of 2540 mm travels with a speed of 280 m/min. through the following elements of the lacquering machine: unwinding machine, pulling in station, lacquering module, guiding and pulling rollers, dryer, pulling out station and rewinding machine.
  • the device uses the linear placement of the knife against the moving, appropriately tensioned and coated material, which by creating a zone of increased hydrodynamic pressure 8 and specific stable surface hydrodynamic overpressure of the liquid material (aquaplaning) applies the lacquer evenly to the entire surface.
  • material web travel speed - 280 m/min material web tension for its full width - 850 N
  • viscosity of the applied agent - 16 seconds measurement with a Ford cup DIN - 4 mm DIN 53211
  • knife positioning at an angle of ⁇ 45° in relation to the material web
  • knife with a working area width (D) 0.25 mm.

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)

Claims (3)

  1. Un dispositif pour niveler et établir l'épaisseur d'une couche d'agent liquide appliquée sur un matériau revêtu ou laqué, consistant en un module appliquant l'agent liquide sur une bande mobile (1) du matériau, un module tirant la bande du matériau et au moins une lame essuyant l'excès d'agent liquide, positionnée sur le côté revêtu de la bande du matériau, dans lequel la lame a la forme d'un couteau (4) et dans lequel la lame de couteau (4) est reliée à un dispositif (7) pour régler la pression de la zone de travail de la lame de couteau (4) sur la bande (1), et donc la tension de la bande (1), et l'angle (α) de positionnement de la lame de couteau (4), caractérisé en ce que la lame de couteau (4) est montée à l'extérieur de l'espace d'enroulement de tout rouleau (3) du module tirant.
  2. Un dispositif selon la revendication 1, caractérisé en ce que l'angle (α) de positionnement de la lame de couteau (4) est compris entre 5° et 80°.
  3. Un dispositif selon la revendication 1, caractérisé en ce que la largeur (D) de la zone de travail de la lame de couteau (4) est comprise entre 0,01 et 15 mm.
EP13728260.4A 2012-05-09 2013-05-08 Dispositif pour niveler et établir l'épaisseur d'une couche d'agent liquide étalée sur une matière Active EP2846930B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13728260T PL2846930T3 (pl) 2012-05-09 2013-05-08 Urządzenie do wyrównywania i ustalania grubości warstwy środka płynnego nanoszonego na materiał

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL399127A PL231007B1 (pl) 2012-05-09 2012-05-09 Urządzenie do wyrównywania i ustalania grubości warstwy środka płynnego nanoszonego na materiał
PCT/PL2013/000062 WO2013169128A1 (fr) 2012-05-09 2013-05-08 Procédé et dispositif pour niveler et établir l'épaisseur d'une couche d'agent liquide étalée sur une matière

Publications (2)

Publication Number Publication Date
EP2846930A1 EP2846930A1 (fr) 2015-03-18
EP2846930B1 true EP2846930B1 (fr) 2019-01-16

Family

ID=48607339

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13728260.4A Active EP2846930B1 (fr) 2012-05-09 2013-05-08 Dispositif pour niveler et établir l'épaisseur d'une couche d'agent liquide étalée sur une matière

Country Status (4)

Country Link
EP (1) EP2846930B1 (fr)
ES (1) ES2717275T3 (fr)
PL (2) PL231007B1 (fr)
WO (1) WO2013169128A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013007602A1 (de) * 2013-05-03 2014-11-06 Schattdecor Ag Verfahren zur Herstellung einer bedruckbaren ein- oder mehrschichtigen Materialbahn sowie eine danach hergestellte Materialbahn und eine zugehörige Anlage zur Herstellung einer derartigen Materialbahn
CN112221870A (zh) * 2020-09-17 2021-01-15 陈冻 一种超级电容器生产的具有浆料回收结构的涂布装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE424511B (sv) * 1975-08-26 1982-07-26 Inventing Ab Sett och anordning att bestryka en lopande bana - foretredesvis av papper
SE424510B (sv) * 1975-08-26 1982-07-26 Inventing Ab Sett och anordning for dubbelsidig beleggning av en lopande bana
US5520731A (en) * 1990-10-20 1996-05-28 Zanders Feinpapiere Ag Doctor blade for use in coating continuous strips of material or similar substrates
FI97817C (fi) 1993-10-27 1997-02-25 Valmet Paper Machinery Inc Menetelmä ja sovitelma liikkuvan radan päällystämiseksi
US5609686A (en) * 1995-08-30 1997-03-11 Minnesota Mining And Manufacturing Company Flexible adjustable smoothing blade

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ES2717275T3 (es) 2019-06-20
PL399127A1 (pl) 2013-11-12
WO2013169128A1 (fr) 2013-11-14
PL231007B1 (pl) 2019-01-31
EP2846930A1 (fr) 2015-03-18
PL2846930T3 (pl) 2019-08-30

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