(19)
(11) EP 1 771 334 B1

(12) EUROPEAN PATENT SPECIFICATION

(45) Mention of the grant of the patent:
16.02.2011 Bulletin 2011/07

(21) Application number: 05775580.3

(22) Date of filing: 25.07.2005
(51) International Patent Classification (IPC): 
B65B 9/02(2006.01)
B65B 51/28(2006.01)
(86) International application number:
PCT/US2005/026217
(87) International publication number:
WO 2006/014843 (09.02.2006 Gazette 2006/06)

(54)

METHOD AND DEVICE FOR WRAPPING MULTI-SHEET PRINTED PRODUCTS

VERFAHREN UND VORRICHTUNG ZUM UMPACKEN VON MEHRBLATTDRUCKERZEUGNISSEN

PROCEDE ET DISPOSITIF POUR L'EMBALLAGE DE PRODUITS IMPRIMES EN FEUILLES MULTIPLES


(84) Designated Contracting States:
CH DE FR GB LI

(30) Priority: 28.07.2004 US 901619

(43) Date of publication of application:
11.04.2007 Bulletin 2007/15

(73) Proprietor: Goss International Americas, Inc.
Dover, NH 03820-3290 (US)

(72) Inventors:
  • KAYA, Mehmet, Oktay
    Lee, NH 03824 (US)
  • GUARALDI, Glenn, Alan
    Kingston, NH 03848 (US)

(74) Representative: Domenego, Bertrand et al
Cabinet Lavoix 2, place d'Estienne d'Orves
75441 Paris Cedex 09
75441 Paris Cedex 09 (FR)


(56) References cited: : 
WO-A-00/64738
GB-A- 488 824
GB-A- 1 206 163
US-A- 2 886 931
DE-A1- 3 438 828
GB-A- 681 869
US-A- 2 828 590
US-A- 6 115 997
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description


    [0001] The present invention is directed to a method and device for wrapping multi-sheet printed products, for example wrapping newspapers with plastic for protection, according to the preamble of claims 1 and 13.

    BACKGROUND



    [0002] U.S. Patent No. 5,189,865 describes a method and device for wrapping a multi-sheet printed article, such a bundle of signatures of a newspaper. GB488,824 discloses wrapping articles with a rubber container structure. WO00/64738, which is the closest prior art discloses a device for wrapping newspapers.

    SUMMARY OF THE INVENTION



    [0003] An object of the present invention is to improve the throughput of devices for wrapping multi-sheet printed products.

    [0004] The present invention provides a device for wrapping multi-sheet printed products comprising the features of claim 1, namely:

    [0005] a conveyor carrying a multi-sheet printed product;

    [0006] a first rotating drum having a first exterior surface with at least one surface indentation;

    [0007] a second rotating drum having a second exterior surface, the second rotating drum interacting with the first rotating drum at a first nip;

    [0008] a first wrapping supply providing first wrapping to the first nip on one side of a multi-sheet printed product; and

    [0009] a second wrapping supply providing second wrapping to the first nip on another side of the multi-sheet printed product.

    [0010] By using rotating drums to wrap the multi-sheet printed products, faster speeds are possible than with reciprocating wrappers.

    [0011] The second rotating drum may have a second indentation on its outer surface, and the printed product may fit within the first and second indentation as it passes through the nip.

    [0012] One of the first or second rotating drums has a knife to cut the wrapping material, and the other drum has an anvil to interact with the knife.

    [0013] One of the first and second rotating drums also are heated at their exterior surfaces to melt the first and second wrapping together around the printed product.

    [0014] The first wrapping and second wrapping may be delivered as a continuous film. The wrapping may be made of plastic or thermoplastic material.

    [0015] The exterior surfaces may be ribbed and interact with each other so as to crimp the first and second wrappings together.

    [0016] The conveyor may be a gripper conveyor, and the grippers can drop the printed products into the nip.

    [0017] A sensor can be provided downstream from the nip to check the completed bag formed by the two wrappings encloses a printed product. If so, the full bag may be delivered to a further conveyor. If the bag is empty, the empty bag may be blown away using a blower. The sensor may also check for skewed bags.

    [0018] The present invention also provides a method for forming bags around multi-sheet printed products comprising the steps of claim 13, namely:

    [0019] delivering a multi-sheet printed product to a nip of two drums between two wrappings passing through the nip;

    [0020] passing the multi-sheet printed product and two wrappings through the drum; and

    [0021] sealing the two wrappings around the printed product using the nip so as to form a bag around the multi-sheet printed product.

    [0022] The method includes further cutting the bag.

    [0023] The bag may remain open at one or both ends, or may be closed at both ends.

    [0024] The multi-sheet printed product may enter the nip horizontally, vertically or at any other angle.

    [0025] The present invention may have particular applicability to wrapping newspapers, leaflets, and jackets or a combination thereof, which form collated packs and can be delivered for example with a gripper conveyor.

    BRIEF DESCRIPTION OF THE DRAWINGS



    [0026] A preferred embodiment of the present invention is described on the basis of the following figures, as well as their descriptions, in which:

    [0027] Figure 1 shows a side view of the embodiment in which a gripper conveyor delivers newspapers to two drums;

    [0028] Figure 2 shows a perspective view of the outer surface of the drums;

    [0029] Figure 3 shows a schematic cross-sectional view A-A from Fig. 2 of the nip of the drums; and

    [0030] Figure 4 shows a schematic view of a wrapped printed product formed by the device of Figs. 1 to 3.

    DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT



    [0031] Figure 1 shows a side view of a preferred embodiment in which a gripper conveyor 10 having a plurality of grippers 12 conveys newspapers 14 to a nip area 20 of a first drum 22 and a second drum 24. Each drum 22, 24 in this embodiment has eight indentations 32, 34, respectively, on its exterior surface, as shown more clearly in Fig. 2.

    [0032] Referring again to Fig. 1, a film of a first wrapping 52 is unrolled from a roll 42 and delivered to the outer surface of drum 22, and a film of a second wrapping 54 is unrolled from a roll 44 and delivered to the outer surface of drum 24. Wrapping 52, 54 may be made for example of plastic or a thermoplastic material. While wrappings 52, 54 are shown here as continuous films, they also might be able to be delivered as individual sheets in some embodiments.

    [0033] The wrappings 52, 54 are crimped together and heated by crimping surfaces 36, 38 of drums 22, 24 respectively, as shown in Fig. 2. Thus bags are being continuously formed by the drums, and the indentations 32, 34 provide an uncrimped area of the wrappings 52, 54 which forms a pocket in the bag for the newspaper to enter.

    [0034] A serrated or flat knife 46 interacts with an anvil 48 to cut the bags, so that separated full bags 60 are formed after the nip area 20, as shown in Fig. 1.

    [0035] A sensor at a chute 80 can determine, for example by using a scale to measure weight. A blower can blow away bags which are not full.

    [0036] A conveyor 70 can then carry away full bags.

    [0037] Figure 3 shows a schematic cross-sectional view A-A from Fig. 2 of the nip of the drums. Crimping surfaces 36, 38 are shown in more detail, and interact so that elevations of one surface mesh with depressions of the other surface. Heating elements 72 may be provided to provide heat to the surfaces 36, 38.
    sealed printed product causes a raised or bulging area 62 on the wrapping matenal. A printed area 64 may be provided on the wrapping material. For example the wrappings may be preprinted.

    [0038] Rotating drum as defined herein may be cylindrical or oblong, for example through the use of a rotating belt.


    Claims

    1. A device for wrapping multi-sheet printed products comprising:

    a conveyor (10) carrying a multi-sheet printed product;

    a first rotating drum (22) having a first exterior surface (36);

    a second rotating drum (24) having a second exterior surface (38), the second rotating drum interacting with the first rotating drum at a first nip (20);

    a first wrapping supply (42) providing first wrapping to the first nip on one side of a multi-sheet printed product; and

    a second wrapping supply (44) providing second wrapping to the first nip on another side of the multi-sheet printed product wherein one of the first or second rotating drums has a knife (46) to cut the first and second wrappings,

    characterized

    - in that the other of the first and second rotating drums has an anvil (48) interacting with the knife, the knife interacting with the anvil to cut bags, so that separated full bags are formed,

    - in that the first rotating drum has at least one surface indentation (32) within which the printed product fits as it passes through the nip,

    - in that at least one of the first and second rotating drums are heated to melt the first and second wrapping together around the printed product, whereby the device comprises heat elements (72) for providing heat to the first and second exterior surfaces (36, 38), and

    - in that the first and second exterior surfaces are crimping surfaces that crimp the first and second wrappings together.


     
    2. The device as recited in claim 1 wherein the second exterior surface has a second indentation, the first and second indentations lining up in the nip, in particular the printed product fitting within the first and second indentation as it passes through the nip.
     
    3. The device as recited in any of claims 1 to 3 wherein the first wrapping and second wrapping are continuous films.
     
    4. The device as recited in any of claims 1 to 3, wherein the crimping surfaces (36, 38) interact so that elevations of one crimping surface (36) mesh with depressions of the other crimping surface (38).
     
    5. The device as recited in any of claims 1 to 4 wherein the conveyor is a gripper conveyor.
     
    6. The device as recited in claim 5 wherein the gripper conveyor has grippers (12) releasing the printed products (14) above the nip.
     
    7. The device as recited in any of claims 1 to 6 further comprising a full bag sensor downstream from the nip.
     
    8. The device as recited in any of the preceding claims wherein the first and second wrapping are formed from a thermoplastic material.
     
    9. The device as recited in any of the preceding claims wherein the wrapping comprises a printed area (64).
     
    10. The device as recited in any of the preceding claims comprising further a conveyor (70) adapted to carry away full bags.
     
    11. The device as recited in any of the preceding claims wherein the multi-sheet product comprises a newspaper, leaflets, and jackets or a combination thereof.
     
    12. The device as recited in any of the preceding claims comprising a blower adapted to blow away bags that are not full.
     
    13. A method for forming bags around multi-sheet printed products comprising the steps of:

    delivering a multi-sheet printed product, in particular a newspaper, to a nip of two drums between two wrappings passing through the nip;

    passing the multi-sheet printed product and two wrappings through the drum; and

    sealing the two wrappings around the printed product using the nip so as to form a bag around the multi-sheet printed product

    cutting the bag.


     
    14. The method as recited in claim 13 wherein the bag is closed at both ends.
     


    Ansprüche

    1. Vorrichtung zum Umverpacken von Mehrblattdruckerzeugnissen, mit:

    einer Fördereinrichtung (10), die ein Mehrblattdruckerzeugnis transportiert;

    einer ersten rotierenden Trommel (22) mit einer ersten Außenoberfläche (36);

    einer zweiten rotierenden Trommel (24) mit einer zweiten Außenoberfläche (38), wobei die zweite rotierende Trommel mit der ersten rotierenden Trommel an einem ersten Walzenspalt (20) zusammenwirkt;

    einem ersten Umverpackungsvorrat (42), der dem ersten Walzenspalt an einer Seite des Mehrblattdruckerzeugnisses eine erste Umverpackung bereitstellt; und

    einem zweiten Umverpackungsvorrat (44), der dem ersten Walzenspalt an der anderen Seite des Mehrblattdruckerzeugnisses eine zweite Umverpackung bereitstellt, wobei eine der ersten oder zweiten rotierenden Trommel ein Messer (46) hat, um die erste und zweite Umverpackung abzuschneiden,

    dadurch gekennzeichnet, dass

    - die andere der ersten und zweiten rotierenden Trommel einen mit dem Messer zusammenwirkenden Amboss (48) hat, wobei das Messer so mit dem Amboss zusammenwirkt, dass Taschen abgeschnitten werden, um getrennte volle Taschen zu bilden,

    - die erste rotierende Trommel mindestens eine Oberflächenvertiefung (32) hat, in die das Druckerzeugnis passt, wenn es den Walzenspalt passiert,

    - die mindestens eine der ersten und zweiten rotierenden Trommel erwärmt wird, um die erste und zweite Umverpackung um das Druckerzeugnis herum miteinander zu verschmelzen, wobei die Vorrichtung Heizelemente (72) aufweist, um die erste und zweite Außenoberfläche (36, 38) zu erwärmen, und

    - die erste und zweite Außenoberfläche Crimp-Oberflächen sind, die die erste und zweite Umverpackung zusammencrimpen.


     
    2. Vorrichtung nach Anspruch 1, bei der die zweite Außenoberfläche eine zweite Vertiefung hat, wobei die erste und zweite Vertiefung im Walzenspalt aufeinander ausgerichtet sind, insbesondere so, dass das Druckerzeugnis in die erste und zweite Vertiefung passt, wenn es den Walzenspalt passiert.
     
    3. Vorrichtung nach einem der Ansprüche 1 bis 3, bei der die erste und die zweite Umverpackung Endlosfolien sind.
     
    4. Vorrichtung nach einem der Ansprüche 1 bis 3, bei der die Crimp-Oberflächen (36, 38) zusammenwirken, so dass Erhöhungen einer Crimp-Operfläche (36) in Vertiefungen der anderen Crimp-Oberfläche (38) eingreifen.
     
    5. Vorrichtung nach einem der Ansprüche 1 bis 4, bei der die Fördereinrichtung ein Greiferförderer ist.
     
    6. Vorrichtung nach Anspruch 5, bei der der Greiferförderer Greifer (12) hat, die die Druckerzeugnisse (14) oberhalb des Walzenspalts freigeben.
     
    7. Vorrichtung nach einem der Ansprüche 1 bis 6, die ferner einen Sensor für volle Taschen nach dem Walzenspalt aufweist.
     
    8. Vorrichtung nach einem der vorigen Ansprüche, bei der die erste und zweite Umverpackung aus einem thermoplastischen Material bestehen.
     
    9. Vorrichtung nach einem der vorigen Ansprüche, bei der die Umverpackung einen bedruckten Bereich (64) aufweist.
     
    10. Vorrichtung nach einem der vorigen Ansprüche, die ferner eine Fördereinrichtung (70) aufweist, um die vollen Taschen abzutransportieren.
     
    11. Vorrichtung nach einem der vorigen Ansprüche, bei der das Mehrblattdruckerzeugnis Zeitungen, Prospekte und Schutzumschläge oder eine Kombination derselben aufweist.
     
    12. Vorrichtung nach einem der vorigen Ansprüche, die ein Gebläse aufweist, das dazu eingerichtet ist, nicht gefüllte Taschen wegzublasen.
     
    13. Verfahren zum Bilden von Taschen um Mehrblattdruckerzeugnisse, mit den Schritten:

    Zuführen eines Mehrblattdruckerzeugnisses, insbesondere einer Zeitung, zu einem Walzenspalt zweier Trommeln zwischen zwei den Walzenspalt passierende Umverpackungen;

    Durchführen des Mehrblattdruckerzeugnisses und der beiden Umverpackungen durch die Trommel; und

    Verschließen der beiden Umverpackungen um das Druckerzeugnis mittels des Walzenspalts, um eine Tasche um das Mehrblattdruckerzeugnis zu bilden, und Abschneiden der Tasche.


     
    14. Verfahren nach Anspruch 13, bei dem die Tasche an beiden Enden geschlossen wird.
     


    Revendications

    1. Dispositif pour l'emballage de produits imprimés en feuilles multiples, comprenant:

    un tapis roulant (10) transportant un produit imprimé en feuilles multiples ;

    un premier tambour rotatif (22) ayant une première surface extérieure (36) ;

    un second tambour rotatif (24) ayant une seconde surface extérieure (38), le second tambour rotatif venant en interaction avec le premier tambour rotatif au niveau d'un premier espacement (20) ;

    une première unité d'alimentation d'emballage (42) fournissant un premier emballage au premier espacement sur un premier côté du produit imprimé en feuilles multiples ; et

    une seconde unité d'alimentation d'emballage (44) fournissant un second emballage au premier jeu sur un autre côté du produit imprimé en feuilles multiples, un premier tambour parmi les premier et second tambours rotatifs comportant une lame (46) pour couper les premier et second emballages,

    caractérisé en ce que

    - l'autre tambour parmi les premier et du second tambours rotatifs a une enclume (48) interagissant avec la lame, la lame interagissant avec l'enclume pour couper des sacs, de sorte que les sacs pleins séparés sont formés,

    - le premier tambour rotatif a au moins un renfoncement dans sa surface (32) dans lequel le produit imprimé vient se loger lorsqu'il passe à travers l'espacement;

    - au moins un des premier et second tambours rotatifs est chauffé pour faire fondre les premier et second emballages ensemble autour du produit imprimé, de sorte que le dispositif comprend des éléments chauffants (72) pour fournir de la chaleur aux première et seconde surfaces extérieures (36, 38), et

    - les première et seconde surfaces extérieures sont des surfaces de sertissage qui sertissent les premier et second emballages l'un avec l'autre.


     
    2. Dispositif selon la revendication 1, dans lequel la seconde surface extérieure présente un second renfoncement, les premier et second renfoncements s'alignant dans l'espacement, le produit imprimé venant en particulier se loger dans les premier et second renfoncements lorsqu'il passe à travers l'espacement.
     
    3. Dispositif selon l'une quelconque des revendications 1 à 3, dans lequel le premier emballage et le second emballage sont des films continus.
     
    4. Dispositif selon l'une quelconque des revendications 1 à 3, dans lequel les surfaces de sertissage (36, 38) interagissent de sorte que les élévations d'une surface de sertissage (36) viennent s'engrener avec des creux de l'autre surface de sertissage (38).
     
    5. Dispositif selon l'une quelconque des revendications 1 à 4, dans lequel le tapis roulant est un tapis de préhension.
     
    6. Dispositif selon la revendication 5, dans lequel le tapis de préhension possède des pinces (12) relâchant les produits imprimés (14) au-dessus de l'espacement.
     
    7. Dispositif selon l'une quelconque des revendications 1 à 6, comprenant en outre un capteur de sac plein en aval de l'espacement.
     
    8. Dispositif selon l'une quelconque des revendications précédentes, dans lequel les premier et second emballages sont formés de matériau thermoplastique.
     
    9. Dispositif selon l'une quelconque des revendications précédentes, dans lequel l'emballage comprend une zone imprimée (64).
     
    10. Dispositif selon l'une quelconque des revendications précédentes, comprenant en outre un tapis roulant (70) adapté pour le transport de sacs pleins.
     
    11. Dispositif selon l'une quelconque des revendications précédentes, dans lequel le produit en feuilles multiples comprend un journal, des brochures, et des couvertures ou une combinaison de ces derniers.
     
    12. Dispositif selon l'une quelconque des revendications précédentes, comprenant une soufflante adaptée pour éloigner les sacs qui ne sont pas pleins par soufflage.
     
    13. Procédé de formation de sacs autour de produits imprimés en feuilles multiples, comprenant les étapes consistant à :

    fournir un produit imprimé en feuilles multiples, en particulier un journal, à un espacement de deux tambours, entre deux emballages passant à travers l'espacement ;

    faire passer le produit imprimé en feuilles multiples et deux emballages à travers le tambour ; et

    sceller les deux emballages autour du produit imprimé en utilisant l'espacement afin de former un sac autour du produit imprimé en feuilles multiples pour couper le sac.


     
    14. Procédé selon la revendication 13, dans lequel le sac est fermé aux deux extrémités.
     




    Drawing














    Cited references

    REFERENCES CITED IN THE DESCRIPTION



    This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

    Patent documents cited in the description