EP1084298A1 - Dispositif pour appliquer une matiere de recouvrement sur une bande de papier continue - Google Patents

Dispositif pour appliquer une matiere de recouvrement sur une bande de papier continue

Info

Publication number
EP1084298A1
EP1084298A1 EP99917837A EP99917837A EP1084298A1 EP 1084298 A1 EP1084298 A1 EP 1084298A1 EP 99917837 A EP99917837 A EP 99917837A EP 99917837 A EP99917837 A EP 99917837A EP 1084298 A1 EP1084298 A1 EP 1084298A1
Authority
EP
European Patent Office
Prior art keywords
paper web
roller
applying
deflector roll
metering roller
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
EP99917837A
Other languages
German (de)
English (en)
Other versions
EP1084298B1 (fr
Inventor
Ernst Klas
Gisbert Krossa
Willi Erkelenz
Heinz MÖRTL
Udo Unger
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.)
Vits Maschinenbau GmbH
Kronospan GmbH
Original Assignee
Vits Maschinenbau GmbH
Kronospan 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
Priority claimed from DE1998114212 external-priority patent/DE19814212C1/de
Application filed by Vits Maschinenbau GmbH, Kronospan GmbH filed Critical Vits Maschinenbau GmbH
Publication of EP1084298A1 publication Critical patent/EP1084298A1/fr
Application granted granted Critical
Publication of EP1084298B1 publication Critical patent/EP1084298B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/009—Tools not otherwise provided for
    • 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
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • B05C1/0834—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets the coating roller co-operating with other rollers, e.g. dosing, transfer rollers
    • 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
    • B05C11/028—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with a body having a large flat spreading or distributing surface
    • 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
    • B05C11/045—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 the blades themselves
    • 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
    • D21H23/50—Spraying or projecting
    • 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
    • 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
    • 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
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0245—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to a moving work of indefinite length, e.g. to a moving web
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/18—Paper- or board-based structures for surface covering
    • D21H27/22—Structures being applied on the surface by special manufacturing processes, e.g. in presses
    • D21H27/26—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures
    • D21H27/28—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures treated to obtain specific resistance properties, e.g. against wear or weather

Definitions

  • the invention relates to a device for applying a coating composition consisting of liquid resin and fine-grained abrasive material, in particular corundum, to a continuous paper web which is intended for use in the production of abrasion-resistant laminates.
  • Alpha cellulose serves as a stiffening and suspending agent.
  • the corundum particles have a grain size of 15 to 50 ⁇ m.
  • the application rate is 80 to 200 g / m 2 , so that a layer thickness of 20 to 65 ⁇ m results after the final moisture has been reached.
  • the coating compound should be applied using a wire doctor, a reverse coating system or an anilox roller.
  • the invention has for its object to provide a device for applying a coating composition consisting of liquid resin and fine-grained abrasive material, in particular corundum, to a continuous paper web, which meets the following requirements:
  • a coating composition consisting of liquid resin and fine-grained abrasive material, in particular corundum
  • the coating composition should be applied in a relatively thick, uniform layer , as is required for papers intended for the production of abrasion-resistant laminates, in particular with an application amount of 80 to 200 g / m 2 .
  • the feature of claim 2 improves the uniformity of the applied layer even further.
  • the subject of claim 3 is a preferred embodiment of this feature.
  • An advantageous embodiment of the invention is the subject of claim 4 and in particular of claim 5.
  • the feature of claim 6 ensures that the coating composition applied to the metering roller can be observed much better. This makes pre-dosing easier. Since in the arrangement according to claim 6 the nozzle slot is at the bottom, it is possible to work with a low pump pressure. The settling of particles in the nozzle is completely avoided.
  • the feature of claim 7 prevents coating material from running into the nip when the machine is at a standstill and smearing the deflecting roller.
  • FIGS. 1 to 3 The drawing serves to illustrate the invention with reference to the exemplary embodiments shown schematically in FIGS. 1 to 3.
  • a paper web 1 which has already been pre-impregnated with resin, possibly also already dried, is fed to a deflecting roller 2 in the horizontal direction according to FIG. It wraps around the deflecting roller 2 in the region of an arc of 180 °, which is delimited on one side by the run-up line 3 and on the other side by the run-off line 4. Then it runs in the horizontal direction, as symbolized by arrow 5, to a dryer, not shown.
  • a metering roller 6 with a smooth roller jacket is arranged.
  • it has the same diameter as the deflecting roller 2.
  • the axes of the deflecting roller 2 and the metering roller 6 are mounted parallel to one another at the same height in a machine frame.
  • the mounting of one of the two rollers 2, 6 can be displaced in parallel in the horizontal direction, so that the width of the narrow gap existing between the two rollers 2, 6 is variable.
  • the metering roller 6, like the deflection roller 2, is provided with a drive.
  • the drives of the two rollers 2, 6 are mechanically or electrically coupled, so that the rollers 2, 6 rotate synchronously or approximately synchronously.
  • a slot nozzle 7 for applying the coating material is arranged under the deflection roller 2.
  • the nozzle slot is adjacent to the ramp line 3.
  • a holding strip 8 Arranged above the deflecting roller 2 is a holding strip 8 which is connected to the machine frame and is parallel to the axes of the two rollers 2, 6. Attached to this - seen in the direction of arrow 5 - is the rear edge of a rectangular flap 9 made of flexible, rubber-like material, which extends over the entire working width, ie the width of the paper web 1 to be coated. The remaining edges of the rectangular tab 9 are free. Therefore, a strip-shaped part of the slack flap 9 lying opposite the retaining strip 8 lies loosely on the upper run of the paper web 1 running off the deflecting roller 2 in the vicinity of the drain line 4.
  • the length of the flap 9 - viewed in the direction of the arrow 5 - is approximately between 5 and 50 cm, preferably between approximately 10 and 30 cm.
  • the flap 9 is about 2 to 5 mm thick.
  • the paper web 1 runs at a speed between approximately 10 and 70 m / min, preferably between 20 and 50 m / min.
  • coating composition consisting of liquid resin and fine corundum particles suspended therein is applied in excess.
  • the layer thus applied is split in the narrow gap between deflection roller 2 and metering roller 6, so that part of the coating composition sticks to the paper web and another part is carried along by the metering roller 6. Excess coating mass is stowed in the gap and drips off. Since the surface speeds of the two rollers 2, 6 match at least approximately, the abrasive particles contained in the coating material do not cause any significant wear on the metering roller 6.
  • the layer adhering to the paper web 1 - on average about 80 to 200 g / m 2 - is initially uneven, so that longitudinal stripes are clearly visible. Experience has shown that their width is usually around 5 mm. The distance between the strips is usually between about 10 and 30 mm. The unwanted
  • the exemplary embodiment illustrated in FIG. 2 differs from the previously described exemplary embodiment in particular in that the slot nozzle 7 is directed onto the outer surface of the metering roller 6.
  • the coating composition applied to the metering roller 6 is partially transferred to the paper web 1 in the gap between the two rollers 2, 6. Otherwise, the two exemplary embodiments correspond to such an extent that further explanations of FIG. 2 are unnecessary. 5
  • the slot nozzle 7 is arranged above the metering roller 6, so that the coating composition is applied from above. It is somewhat offset to the apex line of the metering roller 6 in the direction of rotation. In the drawing, it is shown approximately in the Elschreib position.
  • the retaining bar 8 is flexible or connected by flexible fasteners to the machine frame, not shown, so that it can perform small movements relative to the machine frame.
  • a compressed air turbine vibrator 10 sits on the holding bar 8. It essentially consists of a block-shaped housing with a cylindrical cavity. A rotor 11 is rotatably mounted in the cavity so that its axis of rotation is aligned parallel to the retaining strip 8. It is provided with an imbalance, which is symbolically indicated in the drawing by a black colored sector. Radial ribs sit on the jacket of the rotor, comparable to the blades of a Pelton turbine. Two channels 12, 13, the axes of which are oriented tangentially to the rotor 11, open into the cavity of the vibrator on opposite sides. The channel 12 is connected to a compressed air source.
  • the duct 13, which may be provided with a silencer, not shown, is the outlet for the exhaust air.
  • the vibrator 10 is supplied with compressed air via the channel 12.
  • the rotor 11 is rotated.
  • Circular vibrations are generated by the imbalance of the rotor 1 1, which are transmitted to the retaining strip 8.
  • the flap 9 is also set in vibration.
  • the frequency of the vibrations is determined by the pressure of the air supplied. It is preferably between 100 and 200 Hz.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paper (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

Lors de la fabrication de papier décoratif s'utilisant dans la production de laminés résistant à l'usure, on applique un mélange visqueux de résine de mélanine et d'alphacellulose, auquel sont ajoutées des particules de corindon, sur la surface visible d'une bande de papier continue. Ce nouveau dispositif comprend les parties suivantes : un rouleau de renvoi (2) sur lequel repose la bande de papier (1) dans une zone où elle forme une boucle autour ; un rouleau de dosage (6) disposé parallèlement au rouleau de renvoi (2), qui comprend une fente et est actionné de manière synchrone ou pratiquement synchrone avec le rouleau de renvoi (2) ; un ajutage fendu (7) pour appliquer la matière de recouvrement soit directement sur la bande de papier (1) située sur le rouleau de renvoi (2), soit sur le rouleau de dosage (6) ; une racle consistant principalement en une languette (9) rectangulaire en matériau souple de type caoutchouc, qui est fixée sur son arête arrière, parallèle aux axes des deux rouleaux (2, 6) et repose de manière lâche sur le brin supérieur de la bande de papier (1) qui part du rouleau de renvoi (2).
EP99917837A 1998-03-31 1999-03-23 Dispositif pour appliquer une matiere de recouvrement sur une bande de papier continue Expired - Lifetime EP1084298B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE1998114212 DE19814212C1 (de) 1998-03-31 1998-03-31 Vorrichtung zum Auftragen einer abrasiven Beschichtungsmasse auf eine durchlaufende Papierbahn
DE19814212 1998-03-31
DE19825156A DE19825156C1 (de) 1998-03-31 1998-06-05 Vorrichtung zum Auftragen einer Beschichtungsmasse auf eine durchlaufende Papierbahn
DE19825156 1998-06-05
PCT/EP1999/001946 WO1999050501A1 (fr) 1998-03-31 1999-03-23 Dispositif pour appliquer une matiere de recouvrement sur une bande de papier continue

Publications (2)

Publication Number Publication Date
EP1084298A1 true EP1084298A1 (fr) 2001-03-21
EP1084298B1 EP1084298B1 (fr) 2003-06-04

Family

ID=26045126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99917837A Expired - Lifetime EP1084298B1 (fr) 1998-03-31 1999-03-23 Dispositif pour appliquer une matiere de recouvrement sur une bande de papier continue

Country Status (8)

Country Link
US (1) US6432201B1 (fr)
EP (1) EP1084298B1 (fr)
AT (1) ATE242357T1 (fr)
CA (1) CA2326527C (fr)
DE (2) DE19825156C1 (fr)
ES (1) ES2201706T3 (fr)
PT (1) PT1084298E (fr)
WO (1) WO1999050501A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19901525C2 (de) * 1999-01-16 2001-02-08 Vits Maschinenbau Gmbh Anlage zum Imprägnieren und Beschichten von Papier
DE59907803D1 (de) 1999-01-26 2003-12-24 Kronospan Tech Co Ltd Verfahren zum imprägnieren von dekorpapieren
EP1174738A3 (fr) * 2000-07-11 2004-05-26 Optiva, Inc. Appareillage technologique pour la production de polariseurs
RU2226285C2 (ru) * 2000-07-11 2004-03-27 ОПТИВА, Инк. Устройство формирования поляризатора, устройство локального удаления материала пленки поляризатора и технологическая линия формирования поляризаторов
US6818062B2 (en) * 2001-10-29 2004-11-16 Fuji Photo Film Co., Ltd. Coating method and apparatus
US6582769B2 (en) * 2001-11-28 2003-06-24 Meadwestvaco Corporation Method for conditioning a metering blade
US6942904B2 (en) * 2001-12-11 2005-09-13 Ultra Technology Europe Ab Dry end surface treatment using ultrasonic transducers
DE102004063043B3 (de) * 2004-12-22 2006-07-20 Vits Systems Gmbh Vorrichtung zum Auftragen einer Beschichtungsmasse auf eine Papierbahn
JP4536555B2 (ja) * 2005-03-02 2010-09-01 三菱電機株式会社 検索表示装置
TWI453071B (zh) 2011-08-03 2014-09-21 Nat Univ Chung Cheng Coating thickness adjustment device
CN104907221A (zh) * 2015-06-21 2015-09-16 李亚光 一种涂布系统及涂布方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB674149A (en) 1949-06-30 1952-06-18 Herbert John Mallabar Improvements in the manufacture of decorative laminae
US3373071A (en) * 1964-03-26 1968-03-12 Gen Electric Laminates
AT325005B (de) * 1967-11-20 1975-09-25 Benno Saladin Verfahren und vorrichtung zum beschichten als endlose bahnen oder in formatzuschnitten auftretender unterlagen mit pulverförmigenwerkstoffen
KR920006265B1 (ko) * 1987-10-01 1992-08-01 미쓰비시덴기 가부시기가이샤 간격판의 제조장치
AU5421794A (en) 1992-11-06 1994-06-08 Robert Donnelly Method and apparatus for coating paper or the like
DE19508797C1 (de) * 1995-03-15 1996-08-29 Graudenz & Partner Consultatio Verfahren zur Herstellung von Dekorpapier zur Verwendung bei der Herstellung von abriebfesten Laminaten
FR2743580B1 (fr) 1996-01-11 1998-04-03 Mead Corp Procede pour fabriquer des recouvrements a resistance elevee a l'abrasion
DE19643742A1 (de) * 1996-10-23 1998-04-30 Vits Maschinenbau Gmbh Verfahren und Vorrichtung zum Beschichten einer Papierbahn
DE19901525C2 (de) * 1999-01-16 2001-02-08 Vits Maschinenbau Gmbh Anlage zum Imprägnieren und Beschichten von Papier

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9950501A1 *

Also Published As

Publication number Publication date
CA2326527A1 (fr) 1999-10-07
ES2201706T3 (es) 2004-03-16
CA2326527C (fr) 2004-06-22
PT1084298E (pt) 2003-10-31
DE59905852D1 (de) 2003-07-10
WO1999050501A1 (fr) 1999-10-07
EP1084298B1 (fr) 2003-06-04
DE19825156C1 (de) 1999-10-07
US6432201B1 (en) 2002-08-13
ATE242357T1 (de) 2003-06-15

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