DE3535685A1 - Method and device for calendering sheets coated with varnish - Google Patents

Method and device for calendering sheets coated with varnish

Info

Publication number
DE3535685A1
DE3535685A1 DE19853535685 DE3535685A DE3535685A1 DE 3535685 A1 DE3535685 A1 DE 3535685A1 DE 19853535685 DE19853535685 DE 19853535685 DE 3535685 A DE3535685 A DE 3535685A DE 3535685 A1 DE3535685 A1 DE 3535685A1
Authority
DE
Germany
Prior art keywords
layer
lacquer
varnish
sheets
calendering
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
DE19853535685
Other languages
German (de)
Other versions
DE3535685C2 (en
Inventor
Oskar Greff
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.)
BILLHOEFER MASCHINENFABRIK GMBH & CO. KG, 90449 NU
Original Assignee
Billhoefer Maschinenfabrik 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 Billhoefer Maschinenfabrik GmbH filed Critical Billhoefer Maschinenfabrik GmbH
Priority to DE19853535685 priority Critical patent/DE3535685C2/en
Publication of DE3535685A1 publication Critical patent/DE3535685A1/en
Application granted granted Critical
Publication of DE3535685C2 publication Critical patent/DE3535685C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • D21H25/14—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod the body being a casting drum, a heated roll or a calender
    • 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
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
    • B05C9/12—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed after the application

Abstract

A method for calendering sheets coated with varnish, wherein the sheets are coated with a cold-curing, e.g. aqueous, varnish, and the surface of the still pasty layer of varnish is smoothed and fixed by a cooled high-gloss roller.

Description

Das übliche Kalandrierverfahren zur Erzielung von Hochglanz­ oberflächen bei lackbeschichteten Bogen besteht darin, daß zunächst eine Schicht aus einem thermisch erweichbaren Lack auf die Bogenoberfläche aufgebracht wird und daß nach dem Er­ härten dieser Lackschicht der Bogen durch einen Kalander ge­ führt wird, der eine beheizte Hochglanzwalze und eine ihr ge­ gegenüberliegende Gegendruckwalze aufweist. Diese erhitzte Hoch­ druckwalze erweicht eine dünne Oberflächenschicht der Lack­ schicht und glättet sie unter der Wirkung der Gegendruck­ walze. Anschließend wird der Bogen durch ein Heißluftrakel von der Hochdruckwalze abgelöst und unter Wiederabkühlugn der Deckschicht wegtransportiert.The usual calendering process to achieve high gloss Surfaces with paint-coated sheets consists in that first a layer of a thermally softenable lacquer is applied to the sheet surface and that after the Er harden the varnish layer of the sheets using a calender is a heated high-gloss roller and a ge has opposite pressure roller. This heated high pressure roller softens a thin surface layer of the varnish layer and smooth it under the effect of back pressure roller. The sheet is then passed through a hot air squeegee detached from the high pressure roller and with the cooling Surface layer transported away.

Dieses Verfahren ist relativ umständlich, indem zunächst der Lack aufgebracht und gehärtet und dann beim Kalandrieren wie­ der erneut erweicht und geglättet wird. Der Erfindung liegt daher die Aufgabe zugrunde, ein Kalandrierverfahren zu schaf­ fen, welches einfacher, ohne die mehrfache Erwärmung des Lacks arbeitet. This procedure is relatively cumbersome, first of all by the Lacquer applied and hardened and then like during calendering which is softened and smoothed again. The invention lies hence the task of creating a calendering process fen, which is easier without the multiple heating of the paint is working.  

Zur Lösung dieser Aufgabe ist erfindungsgemäß vorgesehen, daß die Bogen mit einem kältehärtenden, z.B. wasserhaltigen, Lack beschichtet werden und daß die Oberfläche der noch pastösen Lackschicht durch eine gekühlte Hochglanzwalze geglättet und be­ festigt wird.To achieve this object, the invention provides that the sheets with a thermosetting, e.g. hydrated, Paint coated and that the surface of the still pasty Paint layer smoothed by a cooled high-gloss roller and be is consolidated.

Durch das erfindungsgemäße Verfahren wird also das bisher übliche vorherige Aushärten des Lacks vor der Kalandrierung vermieden und das Kalandrieren erfolgt in die pastöse Lackschicht unmittelbar nach deren Auftrag, wobei in diesem Fall allerdings eine andere Art von Hochglanzwalze verwendet werden muß, nämlich eine gekühlte Walze, anstelle der bisher üblichen erhitzten Hoch­ druckwalze. Durch dieses Verfahren erspart man nicht nur Zeit und Arbeitsschritte, sondern man spart auch erhebliche Energie, da ja nicht ein mehrfaches Erwärmen der Lackschicht erforderlich ist.So far, this has been achieved by the method according to the invention usual curing of the lacquer prior to calendering avoided and calendering takes place in the pasty lacquer layer immediately after their order, although in this case another type of high gloss roller must be used, namely a cooled roller, instead of the previously used heated high pressure roller. This process not only saves time and work steps, but you also save considerable energy, since it is not necessary to heat the lacquer layer several times is.

Beim erfindungsgemäßen Verfahren wird also die Lackschicht zwischen dem Auftrag und der Kalandrierung nur angetrocknet und gelangt in noch pastösem Zustand an die Kalanderwalze. Durch die gekühlte Oberfläche der Kalanderwalze wird zumindest eine ausreichend dicke Oberflächenschicht der Lackschicht ver­ festigt. Um Mißverständnisse zu vermeiden sei an dieser Stelle darauf hingewiesen, daß Kältehärten zwar bedeutet, daß die pastöse Schicht durch Abkühlen aushärtet, daß es sich dabei aber nicht notwendigerweise um eine thermoplastische Schicht handeln muß, die bei einer nachträglichen Erwärmung auch wieder erweichen würde.In the method according to the invention, therefore, the lacquer layer just dried between application and calendering and reaches the calender roller in a pasty state. By the cooled surface of the calender roll becomes at least one sufficiently thick surface layer of the lacquer layer ver consolidates. In order to avoid misunderstandings at this point pointed out that cold hardening means that the pasty Layer hardens by cooling, but it does not must necessarily be a thermoplastic layer, which soften when heated up again would.

Zur Durchführung des Verfahrens eignet sich ein herkömmlicher Kalander, bei dem die Hochglanzwalze mit einer Kühlvorrichtung verbunden ist, wobei dem Kalander eine Lackiervorrichtung zum Beschichten von Bogen mit einer pastösen Schicht eines kälte­ härtenden, z.B. wasserhaltigen, Lacks vorgeschaltet ist.A conventional method is suitable for carrying out the method Calender, in which the high-gloss roller with a cooling device is connected, wherein the calender a painting device for Coating sheets with a pasty layer of a cold curing, e.g. water-containing, lacquers upstream.

Die Erfindung soll nachstehend an einem Ausführungsbeispiel sowie anhand der Zeichnung näher erläutert werden. The invention is based on an exemplary embodiment and be explained in more detail with reference to the drawing.  

Dem eigentlichen Kalander 1 ist dabei eine Lackiervorrichtung 2 unmittelbar vorgeschaltet, wobei diese Lackiervorrichtung aus einem nur schematisch angedeuteten Vorratsbehälter 3 über mehrere Walzen 4, 5, 6 sowie eine Gegenwalze 7 eine pastöse Schicht eines kältehärtenden, z.B. wasserhaltigen, Lacks auf die über die Einzugsvorrichtung 8 ankommenden Bogen aufbringt. Diese Bogen mit der noch pastösen Lackschicht laufen in den Kalander 1 ein und gelangen mit obenliegender Lackschicht zwi­ schen die Hochdruckwalze 9 und die Gegendruckwalze 10. Die Hoch­ druckwalze 9 ist mit einer in Form von Kühlschlangen angedeuteten Kühlvorrichtung 11 versehen. Durch diese gekühlte Oberfläche der Hochdruckwalze 9 erfolgt mit dem Glätten der pastösen Lack­ schicht auf den Bogen auch eine oberflächliche Aushärtung des Lacks. Mit Hilfe des Kaltluftrakels 12 werden die Bogen von der Hochdruckwalze 11 abgelöst und über die automatische Bogenabnahme 13 aus dem Kalander 1 herausgeführt.The actual calender 1 is a painting device 2 immediately upstream of said painting device, a pasty layer of a cold-curing hydrous from an only schematically indicated reservoir 3 via a plurality of rollers 4, 5, 6 and a counter roll 7, for example, the coating on the on the drawing-in device 8 arriving bow. These sheets with the still pasty lacquer layer run into the calender 1 and reach with the top lacquer layer between the high pressure roller 9 and the counter pressure roller 10 . The high pressure roller 9 is provided with a cooling device 11 indicated in the form of cooling coils. Due to this cooled surface of the high-pressure roller 9 , with the smoothing of the pasty lacquer layer on the sheet, there is also a surface hardening of the lacquer. With the help of the cold air squeegee 12 , the sheets are detached from the high-pressure roller 11 and guided out of the calender 1 via the automatic sheet removal 13 .

Claims (2)

1. Verfahren zum Kalandrieren mit Lack beschichteter Bogen, dadurch gekennzeichnet, daß die Bogen mit einem kälte­ härtenden, z.B. wasserhaltigen, Lack beschichtet werden und daß die Oberfläche der noch pastösen Lackschicht durch eine gekühlte Hochglanzwalze geglättet und befestigt wird.1. A method for calendering sheets coated with lacquer, characterized in that the sheets are coated with a cold-curing, for example water-containing, lacquer and that the surface of the still pasty lacquer layer is smoothed and fixed by a cooled high-gloss roller. 2. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, gekennzeichnet durch eine einem Kalander (1) mit gekühlter Hochglanzwalze (9) vorgeschaltete Lackiervorrichtung (2) zum Beschichten von Bogen mit einer pastösen Schicht eines kältehärtenden, z.B. wasserhaltigen, Lacks.2. Device for performing the method according to claim 1, characterized by a calender ( 1 ) with a cooled high-gloss roller ( 9 ) upstream painting device ( 2 ) for coating sheets with a pasty layer of a cold-curing, for example water-containing, lacquer.
DE19853535685 1985-10-05 1985-10-05 Method and device for calendering sheets coated with lacquer Expired - Fee Related DE3535685C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19853535685 DE3535685C2 (en) 1985-10-05 1985-10-05 Method and device for calendering sheets coated with lacquer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853535685 DE3535685C2 (en) 1985-10-05 1985-10-05 Method and device for calendering sheets coated with lacquer

Publications (2)

Publication Number Publication Date
DE3535685A1 true DE3535685A1 (en) 1987-04-09
DE3535685C2 DE3535685C2 (en) 1997-03-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853535685 Expired - Fee Related DE3535685C2 (en) 1985-10-05 1985-10-05 Method and device for calendering sheets coated with lacquer

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DE (1) DE3535685C2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0514595A1 (en) * 1991-05-20 1992-11-25 Union Camp Corporation Method of making coated paper and paperboard utilizing impulse drying
US5172853A (en) * 1990-11-30 1992-12-22 Siemens Aktiengesellschaft Method for applying solder to printed wiring boards and printed wiring board to which solder has been applied
US5315070A (en) * 1991-12-02 1994-05-24 Siemens Aktiengesellschaft Printed wiring board to which solder has been applied
DE4322644C1 (en) * 1993-07-07 1994-09-29 Billhofer Maschf Gmbh Device for applying dispersions containing wax

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE853402C (en) * 1949-07-07 1952-10-23 Dynamit Nobel Ag Process and device for the continuous production and treatment of preferably flat materials
AT189392B (en) * 1954-12-03 1957-03-25 Heinrich Pichler Process for the production of surface layers on carrier plates
US3472674A (en) * 1966-07-13 1969-10-14 Mead Corp Pressure sensitive paper and method of producing same
DE2310891A1 (en) * 1972-03-08 1973-09-20 Star Paper Ltd PROCESS FOR PRODUCING HIGH-GLOSS PLASTIC COVERINGS ON SUBSTRATE WEB
DE3438643A1 (en) * 1983-10-22 1985-05-02 Konishiroku Photo Industry Co., Ltd., Tokio/Tokyo METHOD FOR SMOOTHING A COATING AND DEVICE FOR CARRYING OUT THIS METHOD

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE853402C (en) * 1949-07-07 1952-10-23 Dynamit Nobel Ag Process and device for the continuous production and treatment of preferably flat materials
AT189392B (en) * 1954-12-03 1957-03-25 Heinrich Pichler Process for the production of surface layers on carrier plates
US3472674A (en) * 1966-07-13 1969-10-14 Mead Corp Pressure sensitive paper and method of producing same
DE2310891A1 (en) * 1972-03-08 1973-09-20 Star Paper Ltd PROCESS FOR PRODUCING HIGH-GLOSS PLASTIC COVERINGS ON SUBSTRATE WEB
DE3438643A1 (en) * 1983-10-22 1985-05-02 Konishiroku Photo Industry Co., Ltd., Tokio/Tokyo METHOD FOR SMOOTHING A COATING AND DEVICE FOR CARRYING OUT THIS METHOD

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DE-B: KITTEL, Hans Dr.: "Lehrbuch der Lacke und Beschichtungen", Verlag W.A. Colomb, in der Heenemann Verlagsgesellschaft mbH, Berlin und Oberschwandorf, 1979, Bd. VII, S. 197 *
DE-B: Ullmanns Encyklopädie der technischen Chemie, 4. Auflage, Verlag Chemie, Weinheim, New York, 1978, Bd. 15, S. 638-640 *
STOECKHERT, K.: Kunststoff-Lexikon, 7. Aufl., Carl Hanser-Verlag, München, Wien 1981, S. 256-258 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5172853A (en) * 1990-11-30 1992-12-22 Siemens Aktiengesellschaft Method for applying solder to printed wiring boards and printed wiring board to which solder has been applied
EP0514595A1 (en) * 1991-05-20 1992-11-25 Union Camp Corporation Method of making coated paper and paperboard utilizing impulse drying
US5315070A (en) * 1991-12-02 1994-05-24 Siemens Aktiengesellschaft Printed wiring board to which solder has been applied
DE4322644C1 (en) * 1993-07-07 1994-09-29 Billhofer Maschf Gmbh Device for applying dispersions containing wax
US5637147A (en) * 1993-07-07 1997-06-10 Billhoefer Maschinenfabrik Gmbh Calendar for producing a sheet having wax-containing dispersion thereon

Also Published As

Publication number Publication date
DE3535685C2 (en) 1997-03-27

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Legal Events

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8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: BILLHOEFER MASCHINENFABRIK GMBH & CO. KG, 90449 NU

8339 Ceased/non-payment of the annual fee