EP1831465B1 - Systeme pour appliquer une masse de revetement sur une bande de papier - Google Patents

Systeme pour appliquer une masse de revetement sur une bande de papier Download PDF

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Publication number
EP1831465B1
EP1831465B1 EP05849247.1A EP05849247A EP1831465B1 EP 1831465 B1 EP1831465 B1 EP 1831465B1 EP 05849247 A EP05849247 A EP 05849247A EP 1831465 B1 EP1831465 B1 EP 1831465B1
Authority
EP
European Patent Office
Prior art keywords
paper web
roller
metering
limiting element
deflection 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.)
Not-in-force
Application number
EP05849247.1A
Other languages
German (de)
English (en)
Other versions
EP1831465A1 (fr
Inventor
Walter Müller
Heinrich Kuschnik
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 Technology GmbH
Original Assignee
Vits Technology 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 Vits Technology GmbH filed Critical Vits Technology GmbH
Publication of EP1831465A1 publication Critical patent/EP1831465A1/fr
Application granted granted Critical
Publication of EP1831465B1 publication Critical patent/EP1831465B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • D21H25/12—Rearranging applied substances, e.g. metering, smoothing; Removing excess material 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
    • 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
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • D21H23/40—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper only one side of the paper being in contact with 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
    • 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
    • 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
    • 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
    • D21H27/30—Multi-ply

Definitions

  • the invention relates to a device for applying a consisting of liquid resin and fine-grained abrasive material coating composition on a continuous pre-impregnated paper web according to the preamble of claim 1.
  • abrasive material is z. B. corundum used.
  • the problem with the use of such a coating composition is the tendency of the corundum particles to settle, d. H. the tendency of the coating mass to segregate.
  • the DE 195 08 797 C describes a method for producing decorative paper for abrasion resistant laminates.
  • a viscous mixture of melamine resin, corundum particles and alpha-cellulose is applied as a coating mass on the visible surface of a decorative paper.
  • the alpha-cellulose serves as a stiffening and suspending agent.
  • the corundum particles have a particle size of 15 to 50 microns.
  • the application rate is 80 to 200 g / m 2 , so that after drying results in a layer thickness of 20 to 65 microns.
  • the coating composition is applied by means of a wire bar, an anilox roll or a reverse coating system. It has been found that the components of such application systems which come into contact with the coating composition are worn by the abrasive corundum particles within a very short time.
  • a generic device for applying a coating composition to a pre-impregnated with resin, possibly even dried paper web, in which an application unit also has a slot nozzle is from the EP 1 084 298 B known.
  • This device is provided with a guide roller on which the paper web in a wrap region, and a metering roller, which is arranged parallel to the guide roller and includes a narrow gap with it.
  • the slot nozzle is arranged on the deflection roller or on the metering roller.
  • a method for impregnating decorative paper in which a layer of an amino resin treatment material with particulate abrasion material is applied to impregnated, wet decorative paper, is known from US Pat EP 1 068 394 B known. Also in this document it is pointed out that by the nozzle principle, in which the treatment mass with z. B. corundum particles is circulated and moved uniformly, settling phenomena are not observed. It can be dispensed with the admixture of viscosity-increasing substances.
  • the particulate abrasive material alumina and / or silicon carbide having a grain size of 60 to 160 ⁇ m can be used.
  • the GB 2 178 677 A discloses a device for coating webs, in which the web is guided around a deflection roller. On the web coating agent is applied by means of an applicator roll in excess. The applicator roll is arranged vertically below the deflection roller and forms with it a gap in which the coating agent is applied to the web. The applicator roll is associated with a guide plate which forms a channel with the applicator roll. For metering the coating agent, two metering devices are arranged one after the other behind the gap. The device is not suitable for applying coating materials containing abrasive material
  • the object of the invention is to develop a device for applying a coating composition to a continuous paper web according to the preamble of claim 1, in which segregation of the coating composition is avoided and complete wetting of the paper web is ensured and in which work is carried out with a slight excess of coating composition can.
  • the device should be less susceptible to wear.
  • the application unit of the device has a delimiting element which is arranged in the web running direction in front of the nip and extends below the nip, by which a gusset for receiving the coating mass is formed between the deflecting roller and the delimiting element.
  • a gusset for receiving the coating mass is formed between the deflecting roller and the delimiting element.
  • the gusset is the Filled coating.
  • the coating composition is received, dragged to the gap between the metering roller and the guide roller and adjusted at the exit of the gap to the desired amount, wherein a portion of the coating material is returned from the metering to the gap and the remaining part as Layer remains on the paper web.
  • only about a 1 to 3-fold excess of coating material from the gusset is taken up by the paper web.
  • the amount of coating composition is less than the amount adhered during the jetting and substantially less than the amount leaving a slot nozzle. The excess is jammed in front of the gap and can flow back into the gusset.
  • the inclusion of the coating composition in the gusset which is similar to a passage of the paper web through a supply of coating composition, ensures in a simple manner complete wetting of the paper web.
  • gusset only a slightly higher than the required amount of the coating composition can be dosed.
  • containers, lines and the circulation pump can be made smaller.
  • the investment and energy requirements are reduced.
  • the gusset forming limiting element is a very simple component and can optionally be easily replaced.
  • the coating mass is inevitably mixed by the movement of the paper web.
  • a possibly occurring, slight settling of the corundum particles in the gusset leads rather to an accumulation of the coating mass of corundum particles taken up by the paper web than to an impoverishment.
  • the reason for this is that corundum particles possibly settling in the gusset move onto the paper web.
  • a particular advantage of a device according to the invention is that it is versatile because of its simplicity. It is suitable for impregnating decor paper and also for impregnating overlay paper.
  • the paper web to be coated can by applying resin and dosing the amount of resin z. B. with metering or z. B. a squeegee and then directly the wet paper web are provided with coating material.
  • a prepreg paper web may be dried prior to application of coating composition.
  • viscosity-increasing substances such as, for example, can be used.
  • B. alpha-cellulose can be dispensed with.
  • such substances can also be added without problems.
  • As abrasive material all known particles can be used, for. As abrasive particles of alumina and / or silicon carbide with a particle size of 15 to 200 microns.
  • the thickness of the coating can be 20 to 250 ⁇ m.
  • the limiting element may according to claim 3 alternatively at its lower end to the paper web a narrow gap of z. B. 0.05 to 1 mm.
  • the coating material is taken out of the gap by the paper web up to a certain gap width, so that it does not flow through the gap.
  • a complete take is z. B. at a web speed of 60 m / min up to a gap width of about 0.3 mm.
  • For larger gap widths of z. B. 0.3 to 1 mm is a constant low flow through the gusset of coating material and thus allows a certain circulation.
  • the limiting element is designed as a largely planar, at an acute angle to the vertical component, and thus as a simple component, and arranged in front of the guide roller.
  • the metering roller can be arranged offset in height relative to the guide roller according to claim 5. This allows easy attachment of the limiting element.
  • the metering roller and the guide roller according to claim 6 form drivable opposite, allows for both rollers a movement in the web running direction and thus a dosing of the coating material with low risk of wear of the rollers.
  • the metering roller and the guide roller may be designed to be drivable in the same direction. This makes it possible to smooth the surface of the recorded layer by the metering roller rolling counter to the direction of web travel.
  • the metering roller according to claim 8 downstream of a smoothing unit allows smoothing of the surface of the recorded layer and is particularly in a metering roll, which rolls according to claim 6 in the direction of paper travel and from which tears off the remaining on the paper web, advantage.
  • FIGURE shows a device according to the invention for applying coating material to a paper web.
  • a device for applying a coating composition consisting of liquid resin and fine-grained abrasive material to a preimpregnated paper web 1 has a deflection roller 2, a metering roller 3 and an application unit.
  • the paper web 1 is fed according to the figure in the horizontal direction of the guide roller 2 and is applied to this in a wrap, and that in the range of an arc of 180 °. Then it is in the horizontal direction, as symbolized by an arrow A, led to a dryer, not shown.
  • the guide roller 2 is rotatably mounted with a horizontal axis in a machine frame, not shown.
  • the metering roller 3 is rotatably mounted in the machine frame, that the axes of rotation of the guide roller 2 and the metering roller 3 are parallel and between them a narrow gap 4 is formed.
  • the width of this gap 4 is z. B. 0.05 to 0.5 mm.
  • the axis of rotation of the metering roller 3 is higher than that of the deflection roller 2, d. H.
  • the metering roller 3 is arranged at a height offset from the guide roller 2.
  • the bearing of one of the rollers 2, 3 is displaceable parallel to a connecting line of its axes of rotation, so that a width of the narrow gap 4 between the rollers 2, 3 is variable.
  • the metering roller 3 is provided with a smooth roll shell.
  • the guide roller 2 and the metering roller 3 are each connected to a drive so that their directions of rotation arrows B and C are in the same direction with the web running direction of the paper web 1. Ie. the two rollers 2, 3 themselves are driven in opposite directions.
  • the drives of the two rollers 2, 3 are mechanically or electrically coupled so that the rollers 2, 3 rotate synchronously or approximately synchronously.
  • the application unit has a limiting element 5, which is arranged below the metering roller 3 so that between the guide roller 2 and the limiting element 5, a gusset 6 is formed.
  • the limiting element 5 is formed as a substantially planar component and extends parallel to the guide roller 2.
  • the limiting element 5 is a metal z. B. made of stainless steel, flat sheet metal, which is arranged at an acute angle to the vertical in the wrapping area in front of the guide roller 2. The lower end of the limiting element 5 is guided so close to the jacket of the guide roller 2 that it touches the paper web 1 and thus seals the gusset 6 down.
  • the limiting element 5 extends by a length of at least a few millimeters beyond the line of contact with the paper web 1 downwards, d. H. it is tangent to the paper web 1 on.
  • the gusset 6 is open.
  • the application unit further has a supply line 7 for the coating composition and a manifold 8, in which the supply line 7 opens.
  • the also parallel to the guide roller 2 extending manifold 8 is located in the upper region of the gusset 6 and is provided on its underside with spaced holes.
  • the application unit additionally comprises a collecting trough 9 arranged underneath the deflecting roller 2, as well as means, not shown, of a circulating system for the coating compound with a storage container, a pump and lines to which the collecting trough 9 and the supply line 7 are connected. Possibly. a bypass arrangement to the gusset 6 is provided.
  • a smoothing unit with a parallel to the guide roller 2 extending retaining strip 10 and a rectangular lobes 11 of flexible, rubbery material is arranged.
  • the tab 11 is attached to the rear edge of the retaining strip 10 so that a strip-shaped part of the tab 11 loosely rests on the top of the running of the guide roller 1 paper web 1.
  • the tab 11 extends over the entire width of the paper web 1.
  • the paper web 1 is at a web speed between about 10 to 70 m / min, z. B. of 50 m / min, the guide roller 2 supplied in a horizontal direction from below, led to the guide roller 2 and further approximately horizontally in the direction of arrow A of the dryer.
  • the coating composition is metered through the supply line 7 and the manifold 8, which contains homogeneously distributed the abrasion-resistant particles.
  • the coating composition is largely uniformly distributed over the width of the paper web 1.
  • the amount supplied corresponds at least and as exactly as possible to the predetermined desired quantity corresponding to a selected coating thickness. If necessary, small amounts of excess coating material flow over the open sides of the gusset 6, are collected in the sump 9 and returned to the reservoir.
  • the paper web 1 takes from the gusset 6, the coating composition.
  • the inclusion of the coating composition takes place with a 1 to 3-fold excess, ie with a substantially lower excess than in a spraying of the paper web 1.
  • the on the paper web. 1 adhere adhering coating mass.
  • Excess coating composition, and indeed retained in front of the gap 4 and carried by the metering roller 3 coating mass accumulates in front of the gap 4 and flows back into the gusset 6. A small portion of the coating mass entrained by the metering roller 3 can drip into the trough 9 and be circulated with the remaining coating compound.
  • a portion of the coating composition may be circulated through the bypass arrangement such that the total amount circulated may be three to ten times greater than the amount required. Also, this circulated amount is much lower than the amount that is necessary when using slot nozzles.
  • the tearing off of the coating 1 adhering to the paper web 1 from the surface of the metering roller 3 at the exit of the gap 4 can lead to slight unevenness of the layer, for. B. to longitudinal stripes lead. These are smoothed by the following, resting on the surface of the layer of flaps 11.
  • the thus coated paper web 1 is then dried in the dryer to a predetermined residual moisture and then z. B. wound on a roll or cut into sheets.
  • the supply line 7 and the manifold 8 can be replaced by a plurality of supply lines, which open at a distance from each other in the upper region of the gusset 6.
  • the limiting element 5 is arranged so that it forms a narrow gap of 0.05 to 1 mm with the paper web 1.
  • the gusset 6 may be closed by lateral sheets on the sides. In operation, a small amount of coating material continuously flows through this gap of the gusset 6 and drips into the sump 9.
  • the drives of the deflection roller 2 and the metering roller 3 are connected so that the direction of rotation of the metering roller 3 is in opposite directions to that of the guide roller 2 and to the web running direction. Since, in this embodiment, the metering roller 3 smoothes the surface of the layer, the smoothing unit can optionally be dispensed with.
  • the limiting element 5 and possibly elements on the sides of plastic z. B. be made of Teflon.

Landscapes

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

Claims (8)

  1. Dispositif d'application d'une masse de revêtement se composant de résine liquide et de matériau abrasif sur une bande de papier (1) préimprégnée continue qui est destinée à être utilisée lors de la fabrication de laminés résistant à l'abrasion, avec un rouleau de déviation (2), contre lequel la bande de papier roulante (1) repose dans une zone d'enroulement, avec un rouleau de dosage (3) qui est agencé parallèlement au rouleau de déviation (2) et inclut avec lui une fente étroite (4) pour le dosage de la masse de revêtement, et avec une unité d'application qui présente un élément de délimitation (5) qui forme avec le rouleau de déviation (2) un coin (6) pour la réception de la masse de revêtement qui est destiné à la réception par la bande de papier (1), l'élément de délimitation (5) étant agencé dans le sens de roulement de la bande devant la fente (4) et sous le rouleau de dosage (3).
  2. Dispositif selon la revendication 1, caractérisé en ce que l'élément de délimitation (5) est agencé sur son extrémité inférieure de manière étanche contre la bande de papier (1).
  3. Dispositif selon la revendication 1, caractérisé en ce que l'élément de délimitation (5) forme une fente étroite sur son extrémité inférieure avec la bande de papier (1).
  4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'élément de délimitation est réalisé comme un composant largement plan et est agencé dans la zone d'enroulement selon un angle aigu par rapport à la verticale.
  5. Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le rouleau de dosage (3) est agencé de manière décalée en hauteur par rapport au rouleau de déviation (2).
  6. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le rouleau de dosage (3) et le rouleau de déviation (2) peuvent être entraînés en sens inverse.
  7. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le rouleau de dosage (3) et le rouleau de déviation (2) peuvent être entraînés dans le même sens.
  8. Dispositif selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'une unité de lissage est montée en aval du rouleau de dosage (3).
EP05849247.1A 2004-12-22 2005-12-16 Systeme pour appliquer une masse de revetement sur une bande de papier Not-in-force EP1831465B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004063043A DE102004063043B3 (de) 2004-12-22 2004-12-22 Vorrichtung zum Auftragen einer Beschichtungsmasse auf eine Papierbahn
PCT/EP2005/013576 WO2006069646A1 (fr) 2004-12-22 2005-12-16 Systeme pour appliquer une masse de revetement sur une bande de papier

Publications (2)

Publication Number Publication Date
EP1831465A1 EP1831465A1 (fr) 2007-09-12
EP1831465B1 true EP1831465B1 (fr) 2016-03-09

Family

ID=36123115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05849247.1A Not-in-force EP1831465B1 (fr) 2004-12-22 2005-12-16 Systeme pour appliquer une masse de revetement sur une bande de papier

Country Status (5)

Country Link
US (1) US20080105197A1 (fr)
EP (1) EP1831465B1 (fr)
CN (1) CN101065539A (fr)
DE (1) DE102004063043B3 (fr)
WO (1) WO2006069646A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1960602B1 (fr) * 2006-12-14 2011-11-02 Grenzebach BSH GmbH Système d'application d'une pâte de revêtement fortement abrasive sur une bande transporteuse en déplacement
DE102008029861A1 (de) * 2008-06-25 2009-12-31 Vits Systems Gmbh Vorrichtung und Verfahren zum Bedrucken und Imprägnieren/Beschichten einer Bahn
DE102009034605B3 (de) * 2009-07-24 2011-01-27 Vits Technology Gmbh Vorrichtung zum Beschichten einer durchlaufenden Bahn
CN103894317A (zh) * 2014-03-28 2014-07-02 苏州市建诚装饰材料有限公司 一种喷涂装置
CN106835844B (zh) * 2017-03-22 2018-08-21 山东东宇鸿翔装饰材料有限公司 装饰纸用浸胶试验机

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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
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DE3010038A1 (de) * 1980-03-15 1981-09-24 Küsters, Eduard, 4150 Krefeld Vorrichtung zum kontinuierlichen behandeln von textilen u.ae. warenbahnen mit schaum
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DE19508797C1 (de) * 1995-03-15 1996-08-29 Graudenz & Partner Consultatio Verfahren zur Herstellung von Dekorpapier zur Verwendung bei der Herstellung von abriebfesten Laminaten
FR2745732B1 (fr) * 1996-03-08 1998-04-24 Lorraine Laminage Dispositif d'enduction de resine liquide sur une bande en defilement
DE19643742A1 (de) * 1996-10-23 1998-04-30 Vits Maschinenbau Gmbh Verfahren und Vorrichtung zum Beschichten einer Papierbahn
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Also Published As

Publication number Publication date
WO2006069646A1 (fr) 2006-07-06
CN101065539A (zh) 2007-10-31
EP1831465A1 (fr) 2007-09-12
US20080105197A1 (en) 2008-05-08
DE102004063043B3 (de) 2006-07-20

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