EP0597840B1 - Herstellung von wellpappe - Google Patents

Herstellung von wellpappe Download PDF

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Publication number
EP0597840B1
EP0597840B1 EP91909478A EP91909478A EP0597840B1 EP 0597840 B1 EP0597840 B1 EP 0597840B1 EP 91909478 A EP91909478 A EP 91909478A EP 91909478 A EP91909478 A EP 91909478A EP 0597840 B1 EP0597840 B1 EP 0597840B1
Authority
EP
European Patent Office
Prior art keywords
mediums
corrugated
tip
liner
tips
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.)
Expired - Lifetime
Application number
EP91909478A
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English (en)
French (fr)
Other versions
EP0597840A1 (de
Inventor
Michael John 2 Sir William Lyons Road Cahill
Colin Stutt
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.)
Langston Machine Co Ltd
Original Assignee
Langston Machine Co Ltd
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 GB909010814A external-priority patent/GB9010814D0/en
Priority claimed from GB909010815A external-priority patent/GB9010815D0/en
Application filed by Langston Machine Co Ltd filed Critical Langston Machine Co Ltd
Publication of EP0597840A1 publication Critical patent/EP0597840A1/de
Application granted granted Critical
Publication of EP0597840B1 publication Critical patent/EP0597840B1/de
Anticipated expiration legal-status Critical
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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
    • B31F1/2813—Making corrugated cardboard of composite structure, e.g. comprising two or more corrugated layers

Definitions

  • This invention is concerned with the manufacture of corrugated board comprising two layers of corrugated medium adhering to one another, with no intermediate liner, and at least one liner adhering to the outer tips of one of the two corrugated mediums.
  • Board of this type is described and illustrated in Australian patent applications Nos. 62323/86 and 2271/85, and a machine for manufacturing such board is described in European patent application No. 279609, all in the name of Amcor Limited. A further development of the machine is described in our British patent application No. PCT/GB 89/01290, to which reference is directed.
  • the present invention achieves accurate and reliable tip-to-tip registration of the mediums by conveying them together between linear conveyors which press the tips of the two mediums together while the adhesive joining the mediums is being caused or allowed to set at least partially.
  • a process for manufacturing corrugated board comprising two layers of corrugated medium joined together with tip-to-tip registration between the corrugations of the two mediums, without an intermediate liner, and with at least one outer liner, comprises separately and identically corrugating two webs of corrugating material, applying adhesive to the tips of one of the mediums to permit adhesion with the tips of the other medium, bringing the two mediums together with tip-to-tip registration and from then on conveying them along adjacent linear paths with tip-to-tip registration between the corrugations of the two mediums while the adhesive is caused or allowed to set at least partially, at least one outer liner being applied either before or after the corrugated mediums are conveyed along the linear paths in which the tips of their corrugations are secured together, whereby the corrugating mediums are corrugated by being passed between separate pairs of corrugating rolls and that, after leaving the corrugating rolls, upon being brought together at the beginning of their linear paths, they are pressed together by pressing the tips of the two mediums into
  • apparatus for carrying out the above process may comprise means for forming two single-faced webs each comprising a corrugated medium attached to a liner, means for applying adhesive to the tips of one of the corrugated mediums, and means for bringing the corrugated mediums into contact with one another and for then conveying the two mediums along linear paths with tip-to-tip registration between their corrugations while the adhesive is being caused or allowed to set at least partially, characterised by opposed linear conveyors which apply pressure to the mediums urging them together while they are moving along the linear paths.
  • Apparatus for carrying out the above process may alternatively comprise means for separately corrugating the two webs of corrugating medium, means for applying adhesive to the tips of one corrugated medium, and means for bringing the corrugated mediums together and for then conveying them along adjacent linear paths with tip-to-tip registration while the adhesive is being caused or allowed to set at least partially, and including means for applying at least one outer liner to the joined corrugated mediums, characterised by opposed linear conveyors which apply pressure to the two corrugated mediums urging them together while they are moving along the linear paths.
  • one single-faced corrugated web 2 is formed by a single-facer machine 3 comprising heated upper and lower corrugating rolls 4 and 5 and a heated press roll 6.
  • a web 7 of corrugating medium passes around a pre-conditioner guide 8 by which it is moistened prior to entry into the nip between the corrugating rolls 4 and 5.
  • a gluing device comprising a metering roll 9 and an applicator roll 10 applies glue to the tips of the corrugated medium to cause adhesion with a liner web 11 conveyed around the press roll 6, thus forming a single-faced corrugated web 2 in which the corrugated medium lies above the liner.
  • An infrared heater 12 applies more heat to the web as it passes towards a pressure device indicated generally by the reference numeral 13.
  • a similar single-facer machine (not shown), effectively a mirror image of the single facer machine 3 mounted above the machine 3 and slightly further to the left, forms a second single-faced corrugated web 19 of which the corrugated medium lies below the liner.
  • the single-faced web 2 passes towards the pressure device 13 via a tensioning roll 14 which is movable up and down so as to form a loop of variable lengths between guide rolls 15 and 16.
  • the roll 14 may be of lightweight construction, being in contact with the corrugated material, or may be mounted at its opposite ends on two pivoted levers with counter balance weights so that it applies a limited force to the web 2.
  • an upwardly urged tensioning roll 17 tensions and produces a path of variable length for the second single-faced corrugated web 18.
  • Corrugated register rolls 19 and 20 associated with the pressure device 13 engage in corrugations of the respective webs 2 and 18 and control the movement of the webs beyond the tensioning devices.
  • the webs pass around the register rolls and around lead rolls 21 and 22 and then converge towards parallel paths extending between sets of upper and lower belts 23 and 24 arranged in upper and lower pairs.
  • These belts are driven by drive rolls 25 and 26 and are tensioned by rolls 27 and 28.
  • the lower belts 24 are supported by a platen 29 having grooves of just sufficient depth to accommodate the belts, the lands between the grooves being at a level such as to support the lower web 2 during its passage through the pressure device.
  • An air pressure chamber 30 urges the upper single faced corrugated web 18 downwards on to the lower web to cause adhesion between the tips of the corrugated medium, adhesive having been applied to the upper corrugated medium by a device comprising a metering roll 32 and an applicator roll 33.
  • pads formed by flexible bristles may be arranged to press down on the upper web in areas lying between the upper belts, one such bristle being shown for example at 34.
  • the register rolls are driven by separate motors which are electronically timed with respect to one another to ensure that the flute alignment occurs between the two webs. This timing is achieved with the aid of flute count encoders 35 and 36. Similar encoders are mounted adjacent to the exposed portion of the middle roll of each single-facer machine; Figure 1 shows such an encoder 37 adjacent to the corrugator roll 5 of the lower single-facer 3.
  • a drive motor for the lower single-facer machine is controlled as to its speed so as to maintain an appropriate web speed.
  • This control need not be as accurate as the control between the two register rolls.
  • Means (not shown) are provided for detecting when the tension roll 14 moves upwards beyond a desired upper limit, whereupon the speed of the drive to the single-facer 3 is increased, movement of the tension roll 14 below a desired lower limit being similarly arranged to reduce the speed of the drive to the single-facer 3.
  • a similar control exists between the register roll 20 and the upper single-facer machine.
  • the double-faced web 50 may pass through a conventional double-facer arrangement (not shown) for applying pressure, pneumatically or by means of weighted conveyors, to opposite faces of the web 50 over a more extended distance while the adhesive fully sets.
  • the gap between the conveyor bands 23 and 24 of the pressure device may be adjustable so that, for example, conventional double-faced board (with just one corrugated medium) can be manufactured by feeding a simple liner in place of the single-faced web 18.
  • a third liner may be fed between the two single-faced corrugated webs to form a "double double" board.
  • the apparatus may be modified in the region of the pressure device in the manner shown in Figure 2.
  • a larger angle of convergence between the two single-faced webs 2 and 18 is provided to facilitate the conveyance between them of a third liner 37.
  • a further adhesive applicator comprising rolls 38 and 39 for applying adhesive to the tips of the corrugator medium of the lower web 2.
  • Figures 3 to 5 show a different machine.
  • Figure 3 shows webs 101 and 102 of corrugating medium which are corrugated respectively by corrugating rolls 103, 104 and 105, 106. After being corrugated the webs may be held on the respective rolls 104 and 105 by suction supplied through radial passages in the rolls from suction chambers 107 and 107'.
  • the corrugated medium 102 is further conveyed by a roll 108 which cooperates with the roll 104 in bringing together the tips of the respective corrugated mediums.
  • the roll 108 has a number of circumferential recesses 109 leaving relatively narrow corrugated surfaces 110 for pressing the corrugated mediums 102 against the medium 101.
  • Adhesive is applied to the tips of the corrugations of the medium 101 by an adhesive applicator unit 111.
  • the corrugated mediums are conveyed beyond the rolls 108 and 104 initially by conveyor belts 112 which are accommodated in the circumferential recesses in the roll 108 and are formed with external corrugated surfaces which are maintained in alignment with the roll corrugations by engagement with the corrugations of the roll 105.
  • the belts which may be in the form of moulded belts or may comprise chains, pass over a heater 113 and return around a roller 114.
  • the belts 115 are maintained in appropriate timed relation to the belts 112; for example, the belts 115 may have internal timing teeth meshing with teeth on the roll 116, which may in turn be driven from, for example, the roll 108 via gears or a timing belt.
  • a further heater 118 helps to dry the adhesive.
  • the conveyor belts 112 continue to support the corrugated mediums while adhesive is applied to the tips of the upper medium, by a device 119', prior to the application of a first liner 119.
  • the tips of the lower medium then receive adhesive from a device 120' in preparation for the application of a second liner 120.
  • Further heaters 121 and 122 apply heat to the complete product, and any suitable known means (not shown) may be used for applying pressure until the adhesive is substantially fully set.
  • Figure 5 shows an example of another way in which the two outer liners may be applied to the corrugated mediums.
  • the joined corrugated mediums remain on the roller 114, being held by suction from a suction chamber 121, until they are received by a further corrugated roll 122 on which they are held by suction transmitted from a chamber 123.
  • Adhesive is applied to the exposed outer tips of the lower corrugated medium by a device 124, and a liner 125 is then applied to the corrugated mediums, being pressed against them by a heated roll 126.
  • the single-faced corrugated board is then received by a further roll 127 having a smooth circumference, and is held on the roll 127 by suction transmitted from a chamber 128 while adhesive is being applied to the exposed outer tips of the upper corrugated medium by a device 129.
  • a second liner 130 is then applied with the aid of a heated roller 131 so as to form the desired board 132.
  • the board 132 may then pass through any conventional pneumatic or other pressure device for pressing the components of the board together along an extended distance while the adhesive is allowed to fully set.
  • quick adhesion between the corrugated mediums may be achieved by applying a quick-setting adhesive to the corrugated medium 101 along bands corresponding to the corrugated positions 110 of the roll 108. Between those bands a slower drying adhesive may be used.

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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 (10)

  1. Verfahren zum Herstellen von Wellpappe aus zwei Schichten gewellten Materials, die bei gegenseitiger Ausrichtung der Wellenberge der beiden Materialen miteinander verbunden sind ohne Zwischenkaschierung und mit mindestens einer Außenkaschierung, bei dem zwei Bahnen (7,101,102) aus Wellmaterial getrennt und in gleicher Weise gewellt werden, auf die Wellenberge eines der Materialien Klebstoff aufgetragen wird, um sie an den Wellenbergen des anderen Materials haften zu lassen, die beiden Materialien mit gegenseitiger Ausrichtung der Wellenberge zusammengebracht und auf benachbarten geradlinigen Förderbahnen mit gegenseitiger Ausrichtung der Wellenberge der beiden Materialien gefördert werden, während man den Klebstoff zumindest teilweise aushärtet oder aushärten läßt, mindestens eine Außenkaschierung (11;119,120) aufgebracht wird, und zwar entweder bevor oder nachdem die Wellmaterialien auf den linearen Förderbahnen, auf denen ihre Wellenberge aneinander befestigt werden, gefördert werden, wobei die Materialien in der Weise gewellt werden, daß sie zwischen getrennten Paaren von Wellrollen (5,6;103,104,105,106) hindurchgeführt und nach Verlassen der Wellrollen und Zusammenbringen am Anfang ihrer linearen Förderbahnen zusammengepreßt werden, indem die Wellenberge der beiden Materialien miteinander in Anlage gedrückt werden, während man den Klebstoff zumindest teilweise aushärtet oder aushärten läßt, dadurch gekennzeichnet, daß durch gegenüberliegende, geradlinige Förderer (23,24,112,115) zusätzlich Druck ausgeübt wird.
  2. Verfahren nach Anspruch 1, bei dem zwei Außenkaschierungen (7) an den gewellten Materialien (11) angebracht werden, bevor die Materialien zum Verbinden zusammengebracht werden.
  3. Verfahren nach Anspruch 1, bei dem zwei Außenkaschierungen (119,120) mit den gewellten Materialien (101,102) verbunden werden, nachdem die gewellten Materialien miteinander verbunden wurden.
  4. Vorrichtung zur Herstellung von Wellpappe aus zwei Schichten gewellten Materials, die bei gegenseitiger Ausrichtung der Wellenbergen der beiden Materialien miteinander verbunden werden ohne Zwischenkaschierung und mit zumindest einer Außenkaschierung, wobei die Vorrichtung aufweist: Mittel (4-6) zum Bilden zweier einseitiger Bahnen (2;18) mit je einem gewellten Material (7) auf einer Kaschierung (11), Mittel (9,10) zum Klebstoffauftrag auf die Wellenberge eines gewellten Materials und Mittel (19 bis 22), um die gewellten Materialien in Kontakt zu bringen und sie entlang einer geradlinigen Bahn mit zueinander ausgerichteten Wellenbergen zu fordern, während der Klebstoff zumindest teilweise ausgehärtet wird oder aushärten kann, gekennzeichnet durch gegenüberliegende, geradlinige Förderer (23,24), die auf die Materialien Druck ausüben, um sie gegeneinander zu drücken, während sie sich auf der geradlinigen Förderbahn bewegen.
  5. Vorrichtung nach Anspruch 4, bei der die gegenüberliegenden Förderer mehrere Paare gegenüberliegender Förderbänder (23,24) aufweisen.
  6. Verfahren nach Anspruch 4 oder 5, bei dem die gegenüberliegenden Förderer (23,24) so ausgebildet sind, daß sie sich entlang einer Druckkammer (30) bewegen, die dem die Kaschierung einer der einseitigen Wellpappen (18) tragenden Förderer (23) benachbart ist.
  7. Verfahren nach Anspruch 6, bei dem mehrere parallele, die Kaschierung außerhalb der Druckkammer (23) führende Förderbänder (24) so angeordnet sind, daß sie durch Nuten in einer Trägerplatte laufen, welche die benachbarten Kaschierungen in Bereichen zwischen den Bändern unterstützt.
  8. Vorrichtung nach einem der Ansprüche 4 bis 7, bei dem jede der einseitigen Bahnen aus ihrer einseitigen Herstellvorrichtung (3) über einen Justierförderer (19,20) und entlang einer Förderbahn einstellbarer Länge mit einer Spannrolle (14,17) gefördert wird, wobei Geschwindigkeit und Timing der Justierförderer gesteuert werden, um die Wellenberge der Materialien zueinander auszurichten, und wobei die Geschwindigkeit jeder einseitigen Herstellvorrichtung abhängig von der Stellung der entsprechenden Spannrolle gesteuert wird.
  9. Vorrichtung nach Anspruch 8, bei der die Mittel zur Steuerung der Umdrehung der beiden Justierförderer (19,20) Wellenzählvorrichtungen (35,36) an den entsprechenden Justierförderer aufweisen.
  10. Vorrichtung zur Herstellung von Wellpappe aus zwei Schichten gewellten Materials, die bei gegenseitiger Ausrichtung der Wellenberge der gewellten Materialien miteinander verbunden sind, ohne dazwischenliegende Kaschierung und mit zumindest einer Außenkaschierung, wobei die Vorrichtung aufweist: Mittel (103,104,105,106), um die zwei Bahnen (102,101) des Wellmaterials getrennt zu wellen, Mittel (111), um Klebstoff auf die Wellenberge eines gewellten Materials aufzutragen und Mittel (104,108), um die gewellten Materialien zusammenzubringen und sie entlang einer geradlinigen Förderbahn mit zueinander ausgerichteten Wellenbergen zu fördern, während der Klebstoff zumindest teilweise ausgehärtet wird oder aushärten kann, und ferner Mittel, um zumindest eine Außenkaschierung (119,120) auf die verbundenen, gewellten Materialien aufzubringen, gekennzeichnet durch gegenüberliegende, geradlinige Förderer (102,114), die Druck auf die zwei gewellten Materialien ausüben, um sie zusammenzudrücken, während sie sich entlang der geradlinigen Bahn bewegen.
EP91909478A 1990-05-15 1991-05-14 Herstellung von wellpappe Expired - Lifetime EP0597840B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB9010814 1990-05-15
GB909010814A GB9010814D0 (en) 1990-05-15 1990-05-15 Corrugated board manufacture
GB909010815A GB9010815D0 (en) 1990-05-15 1990-05-15 Corrugrated board manufacture
GB9010815 1990-05-15
PCT/GB1991/000758 WO1991017881A1 (en) 1990-05-15 1991-05-14 Corrugated board manufacture

Publications (2)

Publication Number Publication Date
EP0597840A1 EP0597840A1 (de) 1994-05-25
EP0597840B1 true EP0597840B1 (de) 1998-07-22

Family

ID=26297075

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91909478A Expired - Lifetime EP0597840B1 (de) 1990-05-15 1991-05-14 Herstellung von wellpappe

Country Status (6)

Country Link
EP (1) EP0597840B1 (de)
JP (1) JPH05506825A (de)
AU (1) AU664018B2 (de)
DE (1) DE69129863T2 (de)
NZ (1) NZ238143A (de)
WO (1) WO1991017881A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4420958A1 (de) * 1994-06-16 1995-12-21 Bhs Corr Masch & Anlagenbau Maschine zur Herstellung einer einseitig kaschierten Wellpappebahn
AUPN367095A0 (en) * 1995-06-20 1995-07-13 Amcor Limited Corrugated board manufacture
JP2786620B2 (ja) * 1996-08-23 1998-08-13 三菱重工業株式会社 段ボールシートの製造装置
WO1998018614A1 (en) * 1996-10-30 1998-05-07 Best Carton, Ltd. Production of corrugated board structures
DE19828124A1 (de) * 1998-06-25 1999-12-30 Bhs Corr Masch & Anlagenbau Anlage zur Herstellung von 5-lagiger Wellpappe
DE19954301A1 (de) * 1999-11-11 2001-05-17 Bhs Corr Masch & Anlagenbau Verfahren und Anlage zur Herstellung von mindestens 4-lagiger Wellpappe

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR12081E (fr) * 1910-07-05 Societe L. Sutre Et J. Tardieu Emballage et matériel pour le fabriquer
FR1494318A (fr) * 1966-07-29 1967-09-08 Creusot Forges Ateliers Procédé et machine pour la fabrication continue de carton ondulé rigide, à ondulations croisées
US3700518A (en) * 1971-03-17 1972-10-24 Honshu Paper Co Ltd Method for manufacturing a composite corrugated paper board
CA1312540C (en) * 1987-12-18 1993-01-12 Peter Gordon Bennett Forming corrugated board structures
AU615053B2 (en) * 1988-03-31 1991-09-19 Amcor Limited Manufacturing corrugated board
JP2724894B2 (ja) * 1988-03-31 1998-03-09 アムコー・リミテツド 片面段ボール製造装置

Also Published As

Publication number Publication date
DE69129863T2 (de) 1998-12-03
WO1991017881A1 (en) 1991-11-28
DE69129863D1 (de) 1998-08-27
EP0597840A1 (de) 1994-05-25
NZ238143A (en) 1993-04-28
JPH05506825A (ja) 1993-10-07
AU7874191A (en) 1991-12-10
AU664018B2 (en) 1995-11-02

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