EP0463213A1 - Procédé de traitement en surface de bande de papier en mouvement et dispositif pour la mise en oeuvre du procédé - Google Patents

Procédé de traitement en surface de bande de papier en mouvement et dispositif pour la mise en oeuvre du procédé Download PDF

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Publication number
EP0463213A1
EP0463213A1 EP90112262A EP90112262A EP0463213A1 EP 0463213 A1 EP0463213 A1 EP 0463213A1 EP 90112262 A EP90112262 A EP 90112262A EP 90112262 A EP90112262 A EP 90112262A EP 0463213 A1 EP0463213 A1 EP 0463213A1
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EP
European Patent Office
Prior art keywords
paper web
water
heating
moistening
paper
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.)
Withdrawn
Application number
EP90112262A
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German (de)
English (en)
Inventor
Hans-Joachim Dipl.-Ing. Hiedemann
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.)
Jean Hiedemann GmbH and Co KG
Original Assignee
Jean Hiedemann GmbH and Co KG
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 Jean Hiedemann GmbH and Co KG filed Critical Jean Hiedemann GmbH and Co KG
Priority to EP90112262A priority Critical patent/EP0463213A1/fr
Publication of EP0463213A1 publication Critical patent/EP0463213A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • D21H25/04—Physical treatment, e.g. heating, irradiating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/007—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing with heat treatment before printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/02—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by dampening

Definitions

  • the invention relates to a method for the flat treatment of moving paper webs, in particular for changing the elongation properties and / or the web tension of the paper web.
  • the optimal web tensions are at different values.
  • the optimal web tensions depend on the paper properties, i.e. they differ from paper to paper, even from batch to batch.
  • successive rotogravure rollers In order to maintain sufficient paper tension between the individual inking units, successive rotogravure rollers, for example, have circumferences that are several thousandths of a millimeter larger.
  • the change in length that the paper experiences through the embossing is much larger and strongly dependent on pattern to pattern and from type of paper to type of paper.
  • the change in length cannot be calculated, but can only be determined experimentally.
  • the correspondingly determined size of the printing rollers only applies to exactly the paper quality used in the respective test.
  • the invention is based on the object to provide a method by which it is possible with simple means to make a precise length adjustment and in particular to compensate for length errors and to improve the stretchability of the paper.
  • the object is achieved in that the paper web is subjected to a treatment process for moistening and / or a treatment process for heating, and that the degree of moistening and / or the heating temperature are adjustable.
  • the elongation properties of the paper can be changed very quickly in such a way, for example with a given web tension, that a pre precise lengthwise processing of the paper web is possible.
  • both humidification and subsequent heating are carried out.
  • a corresponding moistening or heating alone may be sufficient.
  • the invention further relates to a device for carrying out the method, which is characterized in that adjustable devices for moistening and / or heating the paper web are provided.
  • Figure 1 illustrates a device in which a winding 1 is provided in the initial part, which consists of a very long wound paper web and from which the paper web 2 is pulled in the direction of arrow 3.
  • the paper web reaches a moistening device 4 via a guide roller 5.
  • the moistening device has a box 6 which is open on one side upwards.
  • the paper web 2 is guided tightly along this open side to a further guide roller 11.
  • the paper web is covered by a guide cover 7, which, although it leaves enough room for the paper web, prevents moisture from escaping from the box into the environment.
  • a water spray device 8 which is designed and arranged in such a way that water droplets 10 are sprayed onto the paper web 2 in a uniform distribution, specifically on the underside thereof.
  • the water spray device 8 can consist of one or more movable nozzles or of axially displaceable spray tubes.
  • the droplet jet 9 emerging from the water spray device 8 can be directed against a wall of the box 6, in the present exemplary embodiment against the right wall.
  • the wall is advantageously designed geometrically in such a way that the droplets 10 reflected from the wall, as said, are distributed as evenly as possible over the underside of the paper web 2.
  • the water spray device can also have ultrasound-excited resonators which act on the droplet jet in such a way that the droplets are, as it were, blown apart and distributed.
  • the humidification device 4 is followed by a heating device 12 which has a heating surface which is adjustable and controllable in temperature and with which the moving paper web 2 is brought into contact.
  • the heating surface can be a fixed curved metal plate, for example.
  • the heating surface according to the illustrated embodiment is advantageously formed by a driven heating roller 12, the peripheral speed of which corresponds to the conveying speed of the paper web 2.
  • the paper web wraps around the heating roller 12 on as large a part of its circumference as possible, namely from the run-up point following the guide roller 11 to the lifting point in front of the deflection roller 13. From here the paper web 2 arrives at a connection box 14 in which, for example, a dancer roller 15 is located, which ensures a certain bias.
  • the connection box 14 is closed by a hinged lid 16.
  • the paper web reaches the actual processing machine known per se, for example an embossing calender 17 or a register embossing machine with register embossing rollers 18 and 19, i. H. generally to a processing machine that depends on the precise length adjustment of the paper web.
  • FIG. 2 shows an advantageous exemplary embodiment of a supply unit for treating the water, which is intended for the humidification device 4.
  • An electric motor 21, which drives a water pump 22, is installed in a machine frame 20.
  • the speed of the electric motor and thus also the water pump can be regulated, so that precise regulation and thus also adjustment of the amount of water that can be supplied in the time unit is given.
  • a filter preferably a switchable double filter 26, 27, is also provided.
  • the changeover is effected by a changeover valve 25.
  • a pressure control valve 23 a pressure measuring device 28 and a display device 29 for the flow rate are present.
  • thermo statically controlled instantaneous water heater 24 connected.
  • the amount of water treated by this device exits through the connecting pipe 30 and reaches the actual moistening device 8, for example the nozzles or spray pipes explained.
  • the moistening device 4 can also be equipped with an automatic switch-on and switch-off device which is effective when the paper web exceeds or falls below a predetermined speed range. This device is not shown in the drawing.
  • the paper web 2 is guided from the moistening device 4 to the heating roller 12 in such a way that the sprayed web side bears against the heating roller 12.
  • the temperature of the heating roller 12 is advantageously selected so that the water not yet absorbed by the paper web 2 evaporates from the paper surface into the paper web and the paper surface is largely dry.
  • FIG. 4 shows another embodiment of a moistening device in the diagram, namely a screen roller 34, the circumferential surface of which is provided with a large number of small, identical depressions or cups of precisely defined volume, to which a water film is applied.
  • the anilox roller 34 is partially immersed in a water bath 32 which is located in a water basin 31.
  • the water basin can be connected to the connecting pipe 30 (FIG. 2).
  • a metering element acts on the anilox roller 34, preferably a doctor blade 35 or a squeeze roller 33 according to FIG. 3. This removes excess water and thereby precisely metered the amount of water transferred to the paper web.
  • the squeeze roller 33 can be designed as a rubber roller, which in turn partially dips into a water bath according to FIG.
  • the anilox roller 34 is driven in accordance with FIGS. 3 and 4 in most cases synchronously with the paper web 2.
  • the anilox roller 34 can optionally be driven in all three exemplary embodiments according to FIGS. 3 to 5 at a relative speed to the paper web 2, specifically either with a faster or slower advance or with an opposite direction, i.e. in the opposite direction to the direction of movement of the paper web 2.
  • the anilox roller 34 can be heated for heating or before this water film is heated.
  • the humidification and heating are expediently carried out in at least two mutually independent steps. These measures can be carried out in the case of multiple successive treatment processes on the paper web and consequently when using a plurality of successive processing machines in each case where it is important to change the elongation behavior of the paper and to adapt it to the respective treatment process.
  • the humidification and heating processes are controllable, separately from each other.
  • the fact that the moisture and the temperature in the paper can be set independently of one another has a very effective influence on the paper behavior. Thanks to the precisely adjustable and controllable humidification with a very even distribution of moisture in the paper and the precise setting of the heating, an almost complete utilization of the water and heat quantities is achieved.
  • the moistening is expediently carried out by spraying on small water droplets or water mist only on one side of the paper web.
  • the paper web is expediently guided over a heated surface.
  • the side of the paper web that was previously moistened should come into contact with the heated surface. Since the water drops on their way to the paper give off much less heat to the air than water vapor and because the heat of vaporization is only used for the amount of water on or in the paper web and is fully transferred to the fibers during condensation, this method according to the invention works with very little Heat loss. Decalcified and filtered water should be used for moistening.
  • cold water or water at room temperature or heated water can be used.
  • the water is then expediently heated to a temperature which is close to the evaporation temperature. If, according to a further proposal, the paper web is guided tightly over a box filled with spray droplets or water mist and opened to the paper web, with appropriate regulation practically no water vapor escapes to the outside, so that the water used is used almost completely to moisten the paper web.
  • the heating power of the heated surface or the heating roller is thus adjusted or regulated in such a way that the water applied penetrates or evaporates into the interior of the paper web and the outer surfaces of the paper web are dry.
  • paper webs that can be described as dry still contain a residual moisture content of about 5 percent by weight. With such a low moisture content, however, the stretching behavior of the paper is very inadequate.
  • Another major advantage is the low speed dependence of the moisture in the paper web. As long as the paper web runs slower than the operating speed, more water is supplied to it than at normal operating speed. But then there is also a longer dwell time on the heating surface or the heating roller, so that a corresponding part of the water is evaporated and emerges from the top of the paper web into the environment. Since these are generally only short-term operating states, the escape of the steam into the environment is irrelevant. If necessary, the escaping steam can also be collected from a cavity in the cover 7, sucked off and condensed.
  • the increase in paper moisture during the run-up and run-down phases of the machine remains within such tolerable limits that it is often possible to dispense with speed-dependent control of the water and heat supply.
  • an automatic switching on and off of the moistening device is sufficient when a certain speed threshold is exceeded or not reached.
  • the amount of water can be regulated more easily by speed control of the pump than would be possible with supplied steam.
  • web tension control can be carried out during and after moistening, for example by a tension measuring roller and electronically controlled drive of the heating roller.
  • the precise metering of humidification and / or heating according to the invention can on the one hand compensate for length errors in the paper web, and on the other hand improve the stretchability of the paper. In this way, errors in the determination or compliance with the printing roller circumferences can also be compensated for. The process even enables the processor to use papers of various origins. Because of its greater fault tolerance, the time-consuming and costly empirical determination of the pressure roller circumference can be replaced by an estimate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Paper (AREA)
EP90112262A 1990-06-27 1990-06-27 Procédé de traitement en surface de bande de papier en mouvement et dispositif pour la mise en oeuvre du procédé Withdrawn EP0463213A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP90112262A EP0463213A1 (fr) 1990-06-27 1990-06-27 Procédé de traitement en surface de bande de papier en mouvement et dispositif pour la mise en oeuvre du procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90112262A EP0463213A1 (fr) 1990-06-27 1990-06-27 Procédé de traitement en surface de bande de papier en mouvement et dispositif pour la mise en oeuvre du procédé

Publications (1)

Publication Number Publication Date
EP0463213A1 true EP0463213A1 (fr) 1992-01-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90112262A Withdrawn EP0463213A1 (fr) 1990-06-27 1990-06-27 Procédé de traitement en surface de bande de papier en mouvement et dispositif pour la mise en oeuvre du procédé

Country Status (1)

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EP (1) EP0463213A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0699529A1 (fr) * 1994-09-02 1996-03-06 V.I.B. Apparatebau GmbH Procédé et dispositif pour imprimer une bande
WO1998024720A2 (fr) * 1996-12-06 1998-06-11 Maschinenfabrik Ravenstein Gmbh Adaptation des longueurs de section de bandes a imprimer
WO1999067466A1 (fr) * 1998-06-22 1999-12-29 Valmet Corporation Procede et appareil de traitement de la surface d'une bande
EP1095886A2 (fr) * 1999-10-29 2001-05-02 Dittler Brothers, Inc. Dispositif et méthode pour l'apprêtage de papier pré-imprimé de plusieurs bandes
EP1285754A3 (fr) * 2001-08-07 2004-01-07 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif pour la réhumidification d'une bande
CN103898250A (zh) * 2014-03-03 2014-07-02 南通思瑞机器制造有限公司 一种多功能熨光压花机
DE102015101858A1 (de) * 2015-02-10 2016-10-20 Océ Printing Systems GmbH & Co. KG Verfahren zur Steuerung einer Substrattemperatur sowie Druckanordnung zum Bedrucken eines Substrats
DE102022100057A1 (de) 2022-01-03 2023-07-06 Frank Dörmer Verfahren und vorrichtung zur herstellung eines flächigen polstermaterials aus papier, sowie polstermaterial

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"PULP AND PAPER Chemistry and Chemical Technology, vol.2" 1980, JAMES P. CASEY, NEW YORK, U.S.A: *
"PULP AND PAPER Chemistry and Chemical Technology, vol.3" 1981, JAMES P. CASEY, NEW YORK, U.S.A. *
DATABASE PIRA, no.9123136 Pira International, Leatherhead, GB, A. THORPE : "Electronic tension control" *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0699529A1 (fr) * 1994-09-02 1996-03-06 V.I.B. Apparatebau GmbH Procédé et dispositif pour imprimer une bande
WO1998024720A2 (fr) * 1996-12-06 1998-06-11 Maschinenfabrik Ravenstein Gmbh Adaptation des longueurs de section de bandes a imprimer
WO1998024720A3 (fr) * 1996-12-06 1998-07-23 Ravenstein Gmbh Maschf Adaptation des longueurs de section de bandes a imprimer
WO1999067466A1 (fr) * 1998-06-22 1999-12-29 Valmet Corporation Procede et appareil de traitement de la surface d'une bande
EP1095886A2 (fr) * 1999-10-29 2001-05-02 Dittler Brothers, Inc. Dispositif et méthode pour l'apprêtage de papier pré-imprimé de plusieurs bandes
EP1095886A3 (fr) * 1999-10-29 2002-06-26 Dittler Brothers, Inc. Dispositif et méthode pour l'apprêtage de papier pré-imprimé de plusieurs bandes
EP1285754A3 (fr) * 2001-08-07 2004-01-07 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif pour la réhumidification d'une bande
US6923121B2 (en) 2001-08-07 2005-08-02 Goss Contiweb B.V. Apparatus and method for remoistening a product web
CN103898250A (zh) * 2014-03-03 2014-07-02 南通思瑞机器制造有限公司 一种多功能熨光压花机
CN103898250B (zh) * 2014-03-03 2015-09-30 南通思瑞机器制造有限公司 一种多功能熨光压花机
DE102015101858A1 (de) * 2015-02-10 2016-10-20 Océ Printing Systems GmbH & Co. KG Verfahren zur Steuerung einer Substrattemperatur sowie Druckanordnung zum Bedrucken eines Substrats
US9487029B2 (en) 2015-02-10 2016-11-08 Océ Printing Systems GmbH & Co. KG Method to control a substrate temperature, as well as printing system to print to a substrate
DE102022100057A1 (de) 2022-01-03 2023-07-06 Frank Dörmer Verfahren und vorrichtung zur herstellung eines flächigen polstermaterials aus papier, sowie polstermaterial
EP4215353A1 (fr) 2022-01-03 2023-07-26 Frank Dörmer Procédé et dispositif pour la fabrication d'un matériau de rembourrage en papier et matériau de rembourrage

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