EP2792478B1 - Anordnung und Verfahren für die Herstellung von Wellpappe - Google Patents

Anordnung und Verfahren für die Herstellung von Wellpappe Download PDF

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Publication number
EP2792478B1
EP2792478B1 EP13164476.7A EP13164476A EP2792478B1 EP 2792478 B1 EP2792478 B1 EP 2792478B1 EP 13164476 A EP13164476 A EP 13164476A EP 2792478 B1 EP2792478 B1 EP 2792478B1
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EP
European Patent Office
Prior art keywords
gluing
corrugation
calender
unit
spreading
Prior art date
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Active
Application number
EP13164476.7A
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English (en)
French (fr)
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EP2792478A1 (de
Inventor
Giuseppe Brivio
Renato Rossi
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Quantum Corrugated SRL
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BP Agnati SRL
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Application filed by BP Agnati SRL filed Critical BP Agnati SRL
Priority to EP13164476.7A priority Critical patent/EP2792478B1/de
Publication of EP2792478A1 publication Critical patent/EP2792478A1/de
Application granted granted Critical
Publication of EP2792478B1 publication Critical patent/EP2792478B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2818—Glue application specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2831—Control
    • B31F1/284—Warp prevention
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2845—Details, e.g. provisions for drying, moistening, pressing
    • B31F1/285—Heating or drying equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2845—Details, e.g. provisions for drying, moistening, pressing
    • B31F1/2877—Pressing means for bringing facer sheet and corrugated webs into contact or keeping them in contact, e.g. rolls, belts
    • B31F1/2881—Pressing means for bringing facer sheet and corrugated webs into contact or keeping them in contact, e.g. rolls, belts for bringing a second facer sheet into contact with an already single faced corrugated web

Definitions

  • the present invention relates to an assembly and a process for manufacturing corrugated board from sheets of paper material, of the type described in the preamble of claim 1.
  • Corrugated board is composed of a plurality of coupled sheets, alternately corrugated and smooth, so as to lend structural resistance to the finished material, called namely corrugated board.
  • corrugated board is composed of two flat sheets enclosing a corrugated sheet, or of three flat sheets with two corrugated sheets interspersed between them.
  • corrugated board starting from sheets which pass through corrugation units and a gluing unit.
  • the corrugation units provide for the heating of two sheets, the corrugation of at least one of the two sheets which constitutes an intermediate corrugated sheet and the immediate gluing, with simultaneous heating, of the two sheets to form a compound corrugated sheet.
  • the corrugation units provide a first corrugation calender, composed of two rollers with corrugated surfaces suitable to corrugate the paper, and a second gluing calender, composed of one of the two rollers of the corrugation calender and of one smooth roller.
  • Each of said rollers with corrugated surfaces is preferably made from steel and heated inside by means of vapour, so as to perform the said formation and said hot gluing of the corrugated sheet.
  • a gluing roller is positioned between the two calenders, suitable to supply itself with glue and spread it on the crests of the corrugated paper.
  • the compound corrugated paper made passes through a long portion of the plant for a period of time varying from 10s to 100s and is fed into a gluing unit where it is glued to a smooth cover and, if necessary, to other compound corrugated sheets.
  • the compound corrugated sheet is first heated, by the passage of a roller heated internally with steam, and then moved to a further gluing roller, also suitable to supply itself with glue and spread it on the remaining crests of the corrugated paper, after which it is lastly moved to a flats unit where one or more compound corrugated sheets and a cover are physically joined.
  • the joining of the compound corrugated sheets and the cover is performed by a joining calender and by means of a so-called flats unit.
  • the latter contributes further heat and steam which helps to complete the gluing and define further properties, such as the correct planarity.
  • the units described for making corrugated board provide for two subsequent heating steps of the sheets of paper: one to make the corrugated sheet and join it to a first cover and smooth sheet, and another to join it to the second cover.
  • the technical purpose of the present invention is to develop a unit and a method for making corrugated board able to substantially overcome the inconveniences mentioned above.
  • one important aim of the invention is to obtain a unit and a method for making corrugated board requiring a reduced supply of thermal energy.
  • Another important aim of the invention is to make a unit and a method for making corrugated board which permits high quality of the finished product to be achieved.
  • a further aim of the invention is to make a unit for making corrugated board which occupies less space.
  • reference numeral 1 globally denotes the unit for processing corrugated board according to the invention.
  • corrugated board 105 comprising at least one corrugated sheet enclosed by two covers, starting from sheets of paper material. 100 .
  • sheets of paper material 100 is understood to mean any sheet or compound of sheets, at any stage of processing.
  • the unit 1 comprises, in brief: corrugation means 2 suitable to heat-corrugate sheets of paper material 100, heating means 3 suitable to heat sheets of paper material 100 to provide the heat needed to optimise at least the processing performed by the corrugation means 2, first gluing means 4 and second gluing means 5 , suitable for joining, by hot gluing, a plurality of sheets of paper material 100 to each other.
  • the first gluing means 4 and the second gluing means 5 are positioned next to the corrugation means 2, as specified further below, so that the first heating means 3 are suitable to supply at least a predominant part, and preferably the totality, of the heat needed by the first gluing means 4 and the second gluing means 5.
  • the term predominant is understood as preferably more than 50%.
  • the corrugation means 2 comprise a corrugation calender 7 composed of a first and a second corrugation roller 8 and 9 preferably hollow on the inside and made from steel. They are suitable to heat-corrugate a first sheet of paper material 101 to make a corrugated sheet 101a .
  • the heating means 3 are controlled by the corrugation means 2 and appropriately comprise a pre-heating station 6 , in itself known, suitable for heating the second sheet of paper material 102 before it reaches the corrugation means 2.
  • the corrugation means 2 comprise then a heating device 10 which heats said corrugation rollers 8 and 9 by means of pressurised steam fed into said rollers.
  • Said heating means 3, and in particular the station 6 and the device 10 are preferably the only heating means present in the unit 1 and are therefore suitable to supply heat to the gluing means 4 and 5.
  • some of the subsequent rollers described and illustrated in Fig. 2 can also be heated internally by steam.
  • Said inserted steam is preferably at a temperature of between 120°C and 190°C and at a pressure varying from 1 bar to 14 bar and preferably from 2 bar to 8 bar, such latter range in particular for paper having a paper density of 40g/m 2 to 440g/m 2 .
  • first gluing means 4 Downstream of the corrugation means 2 the first gluing means 4 are positioned, which in turn include first spreading means 11 suitable to spread the glue on the corrugated sheet 101a, and a first gluing calender 12 suitable to join the corrugated sheet 101a including glue to a second smooth sheet in paper material 102 or cover, to form a compound corrugated sheet 103 .
  • the first spreading means 11 are suitable to spread glue on the side of the corrugated sheet 101a coming into contact with the second sheet of paper material 102. These are positioned upstream of the first gluing calender 12 and next to it, so that the glue does not react before contact with the sheets.
  • the first spreading means 11 are preferably in themselves known and used in the manufacturing apparatus of membranes in corrugated board 105.
  • they are composed of a first spreading calender 13 composed of a first gluing cylinder 14 and of the second corrugation roller 9.
  • the gluing cylinder 14 is suitable to fish into a first glue tank 15 and to place a layer of glue on the corrugated sheet 101a.
  • the glue in the first glue tank 15 is preferably in a liquid state at ambient temperature.
  • the first gluing calender 12 is instead positioned downstream of the corrugation calender 7 and of the gluing calender 13, and is suitable for providing the pressure, and even the heat, for joining the corrugated sheet 101a including glue to the second sheet of paper material 102. It is composed of the second corrugation roller 9 and of a pressure roller 16 , preferably internally heated.
  • corrugation means 2 and first gluing means 4 described are structurally placed within a corrugation apparatus 17 , in itself known and described for example in the European patent in EP-B-0970805 , by the same applicant. Downstream of the first gluing means 4 and outside the corrugation apparatus 17 are the second gluing means 5.
  • second spreading means 18 suitable for spreading glue on the compound corrugated sheet 103
  • second gluing calender 19 suitable to join the compound corrugated sheet 103 including glue to a final sheet 104 to make corrugated board 105.
  • the final sheet 104 may be a simple cover, in such case the corrugated board 105 has a single corrugation and two covers, or a sheet in turn including one or more corrugations interspersed with covers and flat sheets, in which case the corrugated board 105 comprises a plurality of corrugations interspersed with flat sheets and covered by covers on the sides facing onto the corrugated board 105.
  • the second gluing calender 19 is positioned downstream of the second spreading means 18, and is suitable to provide the pressure, and even to provide the heat by means of internal steam, to join the compound corrugated sheet 103 including glue to the final sheet 104. It is composed of a first and a second pressure roller 20 and 21 .
  • the second spreading means 18 are suitable to spread glue on the side of the compound corrugated sheet 103 coming into contact with the final sheet 104. These are positioned upstream of the second gluing calender 19 and next to it, so that the glue does not react before contact between the sheets.
  • the second spreading means 18 are preferably in themselves known and the same as the first spreading means 11. They are composed of a second spreading calender 22 composed of a second gluing cylinder 23 and of the first pressure roller 20.
  • the gluing cylinder 23 is suitable to fish into a second glue tank 26 and to place a layer of glue on the compound corrugated sheet 103.
  • the glue in the second glue tank 26 is preferably also in a liquid state at ambient temperature.
  • the corrugated board 105 thus produced is sent to a flats unit 24 , in itself known and suitable to complete the gluing and adjust the planarity of the corrugated board 105 by supplying heat and pressure.
  • the unit 1 is lastly completed by a plurality of straightening rollers 25 positioned all along the unit 1 and suitable to adjust the trajectory of the sheets of paper 100 and of the compound corrugated sheet.
  • the unit 1 is activated and the first and second sheet of paper material 101 and 102 are inserted in the paths provided defined by the straightening rollers 25.
  • the first sheet of paper material 101 is heated by the heating means 3 and corrugated by the corrugation means 2; the second sheet of paper material 102 passes through the station 6, is pre-heated and enters the corrugation apparatus 17 where it is heated once again by the heating means 3 reaching the first gluing means 4, which join it to the corrugated sheet 101a forming the compound corrugated sheet 103 which subsequently comes out of the corrugation apparatus 17.
  • the second gluing means 5 are positioned at a distance of less than 10m and preferably less than 5m from the apparatus 17 which the compound corrugated sheet 103 therefore reaches in less than 5s after coming out of the apparatus 17.
  • the compound corrugated sheet 103 then reaches the second gluing means 5 and is glued to the final sheet 104 forming the corrugated board 105 which is then sent to the flats unit 24.
  • the unit 1 is part of a plant for manufacturing corrugated board 105 and, if the corrugated board has several corrugated layers, the same unit 1 is appropriately replicated in a number of units equal to the number of corrugated layers.
  • the invention thus indicates a new method of manufacturing corrugated board 105 which substantially copies the functioning described of the unit globally denoted by reference numeral 1.
  • the method comprises: a heating step in which the sheets of paper material 100 are heated to provide the heat needed to optimise at least the processing performed in said corrugation step, a corrugation step in which a first sheet of paper material 101 is heat-corrugated to make a corrugated sheet 101a, a first gluing step in which the corrugated sheet 101a is joined to a second sheet of smooth paper material 102 by hot gluing to make a compound corrugated sheet 103, a second gluing step in which the compound corrugated sheet 103 is joined to a final sheet 104 by hot gluing, to make the corrugated board 105.
  • the heating step is suitable to supply at least a predominant part of the heat needed for said first gluing step and said second gluing step.
  • the sheets 100 are then transferred by said heating means 3 to the second gluing means 5 in less than 5 seconds.
  • the invention achieves some important advantages.
  • the gluing may in fact be facilitated by a further contribution of heat, not predominant, given by the heated rollers or even by non-heated rollers but made from non-conductive material, such as polymer matrix composite fibre materials or the like.
  • the lack of the second heating reduces the deterioration of the paper improving the quality thereof.
  • a further advantage of no lesser importance is the fact that the plant occupies less space given that the first and second gluing stations are substantially joined spatially.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Laminated Bodies (AREA)

Claims (7)

  1. Einheit (1) zum Herstellen von Wellpappe (105) aus Papiermaterialbögen (100), umfassend:
    - Wellungsmittel (2), die geeignet sind, um Papiermaterialbögen (100) zu erwärmen,
    - wobei die Wellungsmittel (2) einen Wellungskalander (7) umfassen, der aus einer ersten und einer zweiten Wellungsrolle (8) und (9) besteht,
    - Heizmittel (3), die geeignet sind, um Papiermaterialbögen (100) zu erwärmen, um die Wärme bereitzustellen, die benötigt wird, um mindestens die Verarbeitung zu optimieren, die durch das Wellungsmittel (2) ausgeführt wird,
    - wobei die Heizmittel (3) eine Vorheizstation (6) und eine Heizvorrichtung (10) umfassen,
    - erste Klebemittel (4) und zweite Klebemittel (5), die geeignet sind, um eine Vielzahl von Papiermaterialbögen (100) durch Heißkleben miteinander zu verbinden,
    - wobei die ersten Klebemittel (4) und die zweiten Klebemittel (5) stromabwärts der Wellungsmittel (2) und neben diesen angeordnet sind, sodass die Heizmittel (3) geeignet sind, um 50 % bis 100 % der von den ersten Klebemitteln (4) und den zweiten Klebemitteln (5) benötigten Wärme zuzuführen,
    - wobei das erste Klebemittel (4) erste Spreizmittel (11) und einen ersten Klebekalander (12) beinhaltet,
    - wobei die ersten Spreizmittel (11) stromaufwärts des ersten Klebekalanders (12) und neben diesem angeordnet sind,
    - wobei das erste Spreizmittel (11) aus einem ersten Spreizkalander (13) besteht,
    - wobei der erste Klebekalander (12) stromabwärts von dem Wellungskalander (7) und dem ersten Spreizkalander (13) angeordnet ist und aus der zweiten Wellungsrolle (9) und einer Anpressrolle (16) besteht,
    - wobei das zweite Klebemittel (5) zweite Spreizmittel (18) beinhaltet, und einen zweiten Klebekalander (19), der geeignet ist, um den gewellten Verbundbogen (103), der Klebstoff beinhaltet, mit einem Endbogen (104) zu verbinden,
    - wobei der zweite Klebkalander (19) stromabwärts von dem zweiten Spreizmittel (18), neben diesem, positioniert ist und aus einer ersten und einer zweiten Anpressrolle (20, 21) besteht,
    - wobei das zweite Spreizmittel (18) aus einem zweiten Spreizkalander (22) besteht, der aus einem zweiten Klebezylinder (23) besteht,
    - wobei die Einheit (1) ferner eine Vielzahl von Richtwalzen (25) umfasst, die entlang der Einheit (1) positioniert und geeignet sind, den Verlauf der Papierbögen (100) und des gewellten Verbundbogens (103) einzustellen,
    dadurch gekennzeichnet, dass der zweite Spreizkalander (22) ferner die erste Anpressrolle (20) umfasst.
  2. Einheit (1) nach Anspruch 1, dadurch gekennzeichnet, dass sie ferner eine Abflachungseinheit (24) umfasst, die stromabwärts von dem Paar weiterer Anpressrollen (20, 21) angeordnet ist, die geeignet sind, die Klebung abzuschließen und die Ebenheit der doppelwandigen gewellten Pappe durch Zuführen von Wärme und Druck einzustellen.
  3. Einheit (1) nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das erste Spreizmittel (11) und das zweite Spreizmittel (18) jeweils einen Klebstoffbehälter (15, 26) umfassen, wobei der Klebstoff in den Klebstoffbehältern (15, 26) bei Umgebungstemperatur in einem flüssigen Zustand ist.
  4. Einheit (1) nach Anspruch 3, dadurch gekennzeichnet, dass die Heizvorrichtung (10) Dampf unter Druck bei einer Temperatur zwischen 120 °C und 190 °C und einem Druck, der zwischen 1 bar und 14 bar variiert, in die hohlen gewellten Rollen (8, 9) zuführt.
  5. Einheit (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Heizmittel (3) durch die Wellungsmittel (2) gesteuert werden, wobei die Heizvorrichtung (10) in den Wellungsmitteln (2) enthalten ist.
  6. Anlage zur Herstellung von Wellpappe (105), umfassend mindestens eine Einheit (1) zum Herstellen von Wellpappe (105) aus Papiermaterialbögen (100) nach einem der vorherigen Ansprüche.
  7. Verfahren zur Herstellung von Wellpappe (105) aus Papiermaterialbögen (100), dadurch gekennzeichnet, dass es mit einer Einheit nach einem der Ansprüche 1 bis 5 ausgeführt wird.
EP13164476.7A 2013-04-19 2013-04-19 Anordnung und Verfahren für die Herstellung von Wellpappe Active EP2792478B1 (de)

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EP13164476.7A EP2792478B1 (de) 2013-04-19 2013-04-19 Anordnung und Verfahren für die Herstellung von Wellpappe

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EP13164476.7A EP2792478B1 (de) 2013-04-19 2013-04-19 Anordnung und Verfahren für die Herstellung von Wellpappe

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EP2792478B1 true EP2792478B1 (de) 2019-03-20

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
US11852264B2 (en) 2021-07-30 2023-12-26 TemperPack Technologies, Inc. Insulation products and methods and machines for making insulation products
US12098800B2 (en) 2022-07-29 2024-09-24 TemperPack Technologies, LLC Insulation products and methods and machines for making insulation products

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IT201700099951A1 (it) * 2017-09-06 2019-03-06 Bp Agnati S R L Impianto per la produzione di cartone ondulato
DE102017216717A1 (de) * 2017-09-21 2019-03-21 Bhs Corrugated Maschinen- Und Anlagenbau Gmbh Wellpappe-Anlage
CN107984808B (zh) * 2017-11-28 2019-06-25 天津市正阳彩印有限公司 一种瓦楞纸板上胶装置
DE102018214853A1 (de) * 2018-08-31 2020-03-05 Bhs Corrugated Maschinen- Und Anlagenbau Gmbh Verfahren zum Einführen einer Materialbahn in eine Riffelvorrichtung
CN111685500B (zh) * 2020-05-29 2021-09-28 深圳市厚朴空间智能家具有限公司 一种智能熨平压紧文件柜
JP2024506727A (ja) 2021-02-23 2024-02-14 パペアー ゲーエムベーハー 紙から包装材料を製造する為の装置

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AU653431B2 (en) * 1991-08-19 1994-09-29 Amcor Limited panufacturing corrugated board
DE19755045A1 (de) * 1997-12-11 1999-06-17 Bhs Corr Masch & Anlagenbau Dampfbeheizte Walze, insbesondere für Wellpappenmaschinen
IT1305959B1 (it) 1998-05-11 2001-05-21 Agnati Spa Gruppo per l'accopiamento di fogli di materiale cartaceo nellemacchine per la fabbricazione di cartone ondualto.
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DE102006007290B3 (de) 2006-02-16 2007-11-22 Texmag Gmbh Vertriebsgesellschaft Gmbh Verfahren zur Einbringung von RFID-Tags in Wellpappe und Materialstück aus Pappe mit RFID-Tag

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US1796542A (en) * 1930-10-07 1931-03-17 Gen Fibre Box Co Corrugated paperboard and method of making the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11852264B2 (en) 2021-07-30 2023-12-26 TemperPack Technologies, Inc. Insulation products and methods and machines for making insulation products
US12098800B2 (en) 2022-07-29 2024-09-24 TemperPack Technologies, LLC Insulation products and methods and machines for making insulation products

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