EP0051099B1 - Method and device for making continuous mailing envelope forms or others - Google Patents

Method and device for making continuous mailing envelope forms or others Download PDF

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Publication number
EP0051099B1
EP0051099B1 EP80401573A EP80401573A EP0051099B1 EP 0051099 B1 EP0051099 B1 EP 0051099B1 EP 80401573 A EP80401573 A EP 80401573A EP 80401573 A EP80401573 A EP 80401573A EP 0051099 B1 EP0051099 B1 EP 0051099B1
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EP
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Prior art keywords
web
station
entrainment
entrance
speed
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EP80401573A
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German (de)
French (fr)
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EP0051099A1 (en
Inventor
Arthur Dallaserra
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Herve Et Fils SA SA
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Herve Et Fils SA SA
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Priority to DE8080401573T priority Critical patent/DE3067569D1/en
Priority to EP80401573A priority patent/EP0051099B1/en
Priority to AT80401573T priority patent/ATE7123T1/en
Publication of EP0051099A1 publication Critical patent/EP0051099A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42C—BOOKBINDING
    • B42C3/00—Making booklets, pads, or form sets from multiple webs
    • 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/002—Flexible containers made from sheets or blanks, e.g. from flattened tubes by joining superimposed sheets, e.g. with separate bottom sheets
    • 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2170/00—Construction of flexible containers
    • B31B2170/20—Construction of flexible containers having multi-layered walls, e.g. laminated or lined

Definitions

  • this tape was mainly intended to collect all of the information typed by the printer in order to allow a possible later control, hence the name of the tape, but at present the capacity of the memories of the computers make this function unnecessary and the control strip still exists only to "retain" information which should not appear on the upper sheet, that is to say most often all information other than the addresses of the recipients who are transferred to said upper sheet by means of carbonaceous pads judiciously placed on the back of the control strip.
  • Detachable perforation lines and / or breaking points allow the recipients to open the folds and extract the interior documents.
  • the bundle After the passage in the printer the bundle is brought to a unitizing device where after removal of the possible strip of cover, the folds are separated from each other along the folding lines in screen either by breaking by either by cutting (cutter). Very often, at the entry of the device, longitudinal cutting wheels detach the marginal zones carrying the drive perforations, but this arrangement is not compulsory, the separation of these zones can be carried out on each fold by its recipient if longitudinal lines of detachable perforations have been provided.
  • the invention relates only to the mode of insertion of the sheet or sheets intended to form the interior documents and before assembly each sheet is capable of receiving the most diverse treatments or shapings.
  • the sealing device varies according to the means provided.
  • the joining of the lower and upper sheets on the periphery of each of their flaps can result from a simple embossing or crimplockage, or stapling or sewing. Sealing can also be obtained by welding with or without the addition of material. Most often, however, the joining will be by bonding, either by simple bonding, threads of adhesive being deposited on at least one of the upper and lower sheets, or by self-bonding, threads of self-adhesive substance being deposited on each of the two lower and upper sheets, or else by heat-bonding after coating with threads of heat-activated adhesive on at least one of the sheets.
  • each intermediate sheet can be carried out by any known means: instant accelerator cooperating with a break-in knife, rotary cutting device, or even conventional breaker printing a strong acceleration of the sheet considered, but followed by '' at least one pair of drive and regulation rollers whose speed, variable, is regulated by a scrolling detector.
  • the assembly comprises three sheets, namely, a lower sheet 11, an upper sheet 12 and an intermediate sheet 10.
  • Each of said sheets comprises along at least one of its longitudinal edges marginal perforations ( 10b, 11b, 12b) and is guided and driven along a respective circuit, symbolized here by a support roller (14, 15, 16), by spike trainers (17, 18, 19).
  • Each sheet carries equidistant transverse weakening lines (10a, 11a, 12a), two successive lines delimiting a flap corresponding to a unitary fold.
  • the spacing E l of the weakening lines is greater than that E 2 presented by the weakening lines 10a of the intermediate sheet 10.
  • the intermediate sheet 10 is a little narrower than the sheets 11 and 12.
  • the height E 2 of the flaps of the sheet 10 is less than the height E 1 of the flaps of the sheets 11 and 12.
  • the difference in width and height of the flaps of strip 10 compared to those of strips 11 and 12 is at least twice the width of a sealing thread so that the inner document can fit entirely inside the sealing frame. It suffices then that the upper edge of a flap of the sheet 10 is engaged between the driving rollers 13 slightly later than the upper edges of the flaps of the sheets 11 and 12 and that said intermediate flap is detached from the continuous strip 10 to fit properly between the sheets 11 and 12.
  • the rollers 13 have a tangential speed equal to the running speed V 1 of the sheets 11 and 12, while the running speed V 2 of the sheet 10 imposed by the coaches such as 17 is less than V, and such that
  • a cutter 26 can be provided upstream of the knife 23.
  • these various positions can slide along the slideways provided on the machine and be locked in relative position, the sliding paths of the sheet 10 or 110 then sections of this sheet being constituted by belts which can be unwound from reels at elastic reminder as shown by way of example le, in FIG. 2, with the sliding belts 137 and 138 and their respective reels 139 and 140.

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  • Making Paper Articles (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

1. A method of making continuous mailing or similar closed envelope forms with inserts consisting of uniting a lower continuous web (11, 111) and an upper continuous web (12, 112) by sealing along their longitudinal edges and along transverse bands overlapping corresponding weakening lines (11a, 12a) with a constant spacing E1 and intended for separating the continuous forms into single envelopes, this sealing being achieved in particular by pressure in a station having at its entrance at least one pair of entrainment rolls (13, 113) between which the two above mentioned webs are engaged, moved towards said entrance at the same speed V1 equal to the tangential speed of the entrainment rolls, along separate paths, characterised in that it consists of guiding and entraining at least one intermediate web (10, 110) with a width less than that of the lower web (11, 111) and the upper web (12, 112) and provided with weakening lines (10a) having a constant spacing E2 less than E1 towards the entrainment rolls (13, 113) at the entrance to the sealing station at a speed V2 less than V1 along respective paths, all this being done such that V2 /V1 = E2 /E1 , and of dividing said intermediate web (10, 110) along each of its weakening lines (10a) at the moment when they pass into a dividing station located upstream of the sealing station, and lastly, successively bringing each of the sections of the intermediate web (10, 110) in question thus formed into engagement with the entrainment rolls (13, 113) at the entrance of the sealing station between the lower web (11, 111) and the upper web (12, 112) mentioned above at an average speed substantially equal to V1 .

Description

L'invention concerne les plis qui se présentent en bande continue pour la correspondance ou la diffusion d'informations confidentielles (bulletins de paye par exemple).The invention relates to folds which are presented in a continuous strip for correspondence or the dissemination of confidential information (pay slips for example).

Le plus souvent, de telles bandes sont constituées par des liasses de feuillets continus, pliées en paravent dont chaque volet constitue un pli unitaire. Ces produits auxquels on donné généralement la dénomination anglaise de «mailers» permettent une édition sur une machine imprimante telle que l'imprimante d'un ordinateur, d'un matériel électro comptable ou autre. Le feuillet inférieur de la liasse est destiné à former pour chacun des volets du pliage en paravent, c'est-à-dire pour chacun des plis unitaires, le dos de l'enveloppe du pli considéré, tandis que le feuillet supérieur forme les faces des enveloppes. Tous les feuillets intermédiaires sont destinés à constituer les documents intérieurs ou inserts de chacun des plis. Selon des dispositions connues (plages carbonées, papiers chimiques ou autore- producteurs éventuellement zonés, etc) la frappe de l'imprimante est reportée sélectivement sur certains des feuillets, donc sur certains des documents intérieurs, tandis que des mentions non personnalisées, c'est-à-dire identiques pour tous les plis, sont imprimées sur un ou plusieurs feuillets avant leur assemblage. Presque toujours la liasse comporte en outre une bande de couverture, dite d'archives ou de contrôle, qui recouvre le feuillet supérieur. A l'origine cette bande était principalement destinée à recueillir la totalité des mentions frappées par l'imprimante afin d'en permettre un contrôle éventuel ultérieur, d'où le nom de bande contrôle, mais à l'heure actuelle la capacité des mémoires des ordinateurs rend cette fonction inutile et la bande contrôle n'existe encore que pour «retenir» les informations qui ne doivent pas apparaître sur le feuillet supérieur, c'est-à-dire le plus souvent toutes les informations autres que les adresses des destinataires qui sont reportées sur ledit feuillet supérieur grâce à des plages carbonées judicieusement placées au verso de la bande de contrôle.Most often, such strips are formed by bundles of continuous sheets, folded in a screen, each component of which constitutes a unitary fold. These products, which are generally given the English name of "mailers", allow editing on a printing machine such as a computer printer, electro-accounting equipment or the like. The lower sheet of the bundle is intended to form, for each of the flaps of the folding screen, that is to say for each of the unit folds, the back of the envelope of the fold considered, while the upper sheet forms the faces envelopes. All the intermediate sheets are intended to constitute the interior documents or inserts of each of the folds. According to known arrangements (carbonaceous areas, chemical or self-producing papers, possibly zoned, etc.), the typing of the printer is selectively reported on some of the sheets, therefore on some of the interior documents, while non-personalized mentions are ie identical for all the folds, are printed on one or more sheets before their assembly. Almost always the bundle also has a cover strip, called an archive or control strip, which covers the upper sheet. Originally, this tape was mainly intended to collect all of the information typed by the printer in order to allow a possible later control, hence the name of the tape, but at present the capacity of the memories of the computers make this function unnecessary and the control strip still exists only to "retain" information which should not appear on the upper sheet, that is to say most often all information other than the addresses of the recipients who are transferred to said upper sheet by means of carbonaceous pads judiciously placed on the back of the control strip.

Les feuillets inférieur et supérieur au moins sont réunis par collage le long de leurs bords latéraux. En outre, chacun des volets ou plis est scellé en tête et en pied par des filets de colle transversaux réunissant les feuillets supérieur et inférieur à travers des découpes transversales ménagées surtous les feuillets intermédiaires.The lower and upper sheets at least are joined by gluing along their lateral edges. In addition, each of the flaps or folds is sealed at the head and at the bottom by transverse adhesive threads joining the upper and lower sheets through transverse cutouts made on all the intermediate sheets.

Des lignes de perforations détachables et/ou d'amorce de rupture permettent l'ouverture des plis par les destinataires et l'extraction des documents intérieurs.Detachable perforation lines and / or breaking points allow the recipients to open the folds and extract the interior documents.

Enfin, sur chacun de ses côtés latéraux, la liasse est munie de perforations d'entraînement situées dans une zone marginale détachable. Ces perforations servent à l'entraînement de la liasse dans la machine imprimante puis ensuite dans le dispositif de mise à l'unité.Finally, on each of its lateral sides, the bundle is provided with drive perforations located in a detachable marginal zone. These perforations are used to drive the bundle into the printing machine and then into the uniting device.

Après le passage dans l'imprimante la liasse est amenée à un dispositif de mise à l'unité où après enlèvement de la bande éventuelle de couverture, les plis sont séparés les uns des autres le long des lignes de pliage en paravent soit par rupture par traction soit par coupe (massicot). Très souvent, à l'entrée du dispositif, des molettes de coupe longitudinale détachent les zones marginales portant les perforations d'entraînement, mais cette disposition n'est pas obligatoire, la séparation de ces zones pouvant être effectuée sur chaque pli par son destinataire si des lignes longitudinales de perforations détachables ont été prévues.After the passage in the printer the bundle is brought to a unitizing device where after removal of the possible strip of cover, the folds are separated from each other along the folding lines in screen either by breaking by either by cutting (cutter). Very often, at the entry of the device, longitudinal cutting wheels detach the marginal zones carrying the drive perforations, but this arrangement is not compulsory, the separation of these zones can be carried out on each fold by its recipient if longitudinal lines of detachable perforations have been provided.

Il existe de nombreux types de tels assemblages de plis unitaires; ils diffèrent entre eux parfois par l'agencement des documents intérieurs, mais le plus souvent par la disposition des lignes de perforations détachables et d'amorce de rupture, de manière à permettre une simplification du mode d'ouverture du pli et d'extraction des inserts.There are many types of such unit fold assemblies; they sometimes differ from each other by the arrangement of the interior documents, but most often by the arrangement of the lines of detachable perforations and of initiation of rupture, so as to allow a simplification of the mode of opening of the fold and extraction of the inserts.

Ces assemblages sont utilisés de plus en plus fréquemment pour la diffusion d'informations confidentielles personnalisées ou pour la correspondance de masse: publicité, avis d'échéance, factures, relevés, règlements, etc. Cependant, ils présentent tous un certain nombre d'inconvénients:

  • a) aucun des inserts n'étant en position d'original ne peut être exploité en lecture optique ou magnétique, ce qui interdit en particulier l'utilisation de tels articles pour l'expédition des titres universels de paiement.
  • b) comme il a été dit ci-avant une bande de couverture doit être prévue lorsque certains mentions frappées par l'imprimante ne doivent pas être reproduites sur la face de l'enveloppe, ce qui est le cas le plus fréquent, alors que cette bande inutile par la suite est détruite presqu'aussitôt,
  • c) pour permettre une lecture claire de la frappe de l'imprimante sur les documents intérieurs et surtout sur les derniers, il faut utiliser pour la bande supérieure (face des enveloppes) un papier de faible grammage, ce qui est incompatible avec certaines contraintes et, par exemple, celles qui sont liées aux matériels de tri postal,
  • d) les découpes transversales des feuillets intermédiaires constituent un façonnage onéreux nécessitant un outil spécial coûteux,
  • e) ces découpes font que la surépaisseur due aux feuilles intermédiaires est localisée dans les angles, d'où la formation, au pliage, de cornes et donc risque d'incidents et de détérioration lors du passage dans l'imprimante.
These assemblies are used more and more frequently for the dissemination of personalized confidential information or for mass correspondence: advertising, due notice, invoices, statements, regulations, etc. However, they all have a number of disadvantages:
  • a) none of the inserts being in the original position can be used in optical or magnetic reading, which in particular prohibits the use of such articles for the shipment of universal payment vouchers.
  • b) as mentioned above, a cover strip must be provided when certain indications struck by the printer are not to be reproduced on the face of the envelope, which is the most frequent case, whereas this useless tape is destroyed almost immediately,
  • c) to allow a clear reading of the typing of the printer on the interior documents and especially on the last, it is necessary to use for the upper band (face of the envelopes) a paper of light grammage, which is incompatible with certain constraints and , for example, those related to postal sorting equipment,
  • d) the transverse cuts of the intermediate sheets constitute an expensive shaping requiring an expensive special tool,
  • e) these cutouts cause the extra thickness due to the intermediate sheets to be located in the corners, hence the formation, when folded, of horns and therefore risk of incidents and deterioration when passing through the printer.

Pour obvier aux inconvénients d et e, il a été imaginé de constituer les documents intérieurs (ou inserts), non à partir de feuillets continus intermédiaires convenablement découpés, mais par des feuillets ayant des dimensions inférieures à celles d'un pli unitaire et rapportés par collage sur la bande continue formée par le feuillet inférieur (brevet US-A-4095695). Ces dispositions entraînent certaines difficultés de fabrication, de repérage, éventuellement l'avancement pas à pas dans la machine d'assemblage et dans tous les cas une notable diminution de la cadence. Pour obvier aux inconvénients a, b et c, il a été imaginé de prévoir le scellement des plis unitaires, chez l'utilisateur, après le passage dans l'imprimante, ce qui permet la frappe directe d'au moins un document intérieur et la supression de la bande contrôle, soit avec une liasse de feuillets continus avec découpes transversales classiques, soit suivant des modes particuliers de réalisation selon le brevet US-A-4095695 susmentionné.To obviate the drawbacks d and e, it has been imagined to constitute the interior documents (or inserts), not from continuous continuous sheets suitably cut, but by sheets having dimensions smaller than those of a unitary fold and reported by collage on the continuous strip formed by the lower sheet (US-A-4095695). These provisions cause certain difficulties in manufacturing, tracking, possibly step-by-step advancement in the assembly machine and in all cases a significant decrease in the rate. To obviate the drawbacks a, b and c, it has been imagined to provide for the sealing of unit folds, at the user's place, after passing through the printer, which allows direct typing of at least one interior document and the removal of the control strip, either with a bundle of continuous sheets with conventional transverse cuts, or according to particular embodiments according to the patent US-A-4095695 mentioned above.

Le procédé selon l'invention permet d'obtenir un ensemble continu de plis avec documents intérieurs libres, à partir de feuillets continus ne comportant pas de découpes transversales, ce qui élimine totalement les inconvénients d et e. Ce procédé peut être mis en oeuvre avec un matériel simple, chez l'utilisateur, donc éventuellement après le passage d'au moins l'un des feuillets continus dans l'imprimante, ce qui permet d'éliminer les inconvénients a, b et c.The method according to the invention makes it possible to obtain a continuous set of folds with free interior documents, from continuous sheets not comprising transverse cuts, which totally eliminates the drawbacks d and e. This process can be implemented with simple equipment, at the user's place, therefore possibly after the passage of at least one of the continuous sheets in the printer, which makes it possible to eliminate the drawbacks a, b and c .

L'invention selon la revendication 1 prévoit un procédé de fabrication comportant de façon classique (voir ledit brevet US-A-4095695) la solidarisation d'un feuillet continu inférieur et d'un feuillet continu supérieur, par scellement le long de leurs bords longitudinaux et le long de bandes transversales chevauchant des lignes d'affaiblissement concordantes, d'espacement constant E1 et destinées à la séparation de l'ensemble en plis unitaires, scellement réalisé notamment par pression dans un poste comprenant à l'entrée au moins une paire de rouleaux entraîneurs entre lesquels sont engagés les deux feuillets acheminés vers ladite entrée à la même vitesse V1 de défilement, égale à la vitesse tangentielle des rouleaux entraîneurs, le long de parcours distincts. Il est remarquable en ce qu'il consiste à guider et entraîner vers les rouleaux entraîneurs du poste de scellement à une vitesse V2 inférieure à V1 et le long de parcours respectifs, au moins un feuillet intermédiaire de largeur inférieure à celle des feuillets inférieur et supérieur et muni de lignes d'affaiblissement ayant un espacement constant E2 inférieur à E1' le tout de manière telle que

Figure imgb0001
à sectionner ledit feuillet intermédiaire le long de chacune de ses lignes d'affaiblissement au moment de leur passage dans un poste de sectionnement situé en amont du poste de scellement, et, enfin à amener successivement, à une vitesse moyenne sensiblement égale à VI, chacun des tronçons du feuillet intermédiaire considéré ainsi formés, en prise avec les rouleaux entraîneurs d'entrée du poste de scellement entre les deux feuillets inférieur et supérieur sus-mentionnés.The invention according to claim 1 provides a manufacturing method comprising conventionally (see said patent US-A-4095695) the joining of a lower continuous sheet and an upper continuous sheet, by sealing along their longitudinal edges and along transverse bands overlapping lines of weakening concordant, of constant spacing E 1 and intended for the separation of the assembly into unitary plies, sealing carried out in particular by pressure in a station comprising at the entry at least one pair of driving rollers between which are engaged the two sheets routed towards said entry at the same speed V 1 of movement, equal to the tangential speed of the driving rollers, along separate paths. It is remarkable in that it consists in guiding and driving towards the driving rollers of the sealing station at a speed V 2 less than V 1 and along the respective routes, at least one intermediate sheet of width less than that of the lower sheets and higher and provided with weakening lines having a constant spacing E 2 less than E 1 ' all so that
Figure imgb0001
 sectioning said intermediate sheet along each of its lines of weakness at the time of their passage through a sectioning station located upstream of the sealing station, and finally bringing successively, at an average speed substantially equal to V I , each of the sections of the intermediate sheet considered thus formed, in engagement with the input driving rollers of the sealing station between the two lower and upper sheets mentioned above.

Il est clair que le sectionnement de chaque feuillet intermédiaire peut être réalisé de différentes façons, connues par exemple par coupe à l'aide de couteaux rotatifs, ou par rupture après incision grâce à une accélération brusque mais très brève, ou encore par rupture classique obtenue par une vive accélération de défilement déterminant l'éclatement des lignes d'affaiblissement.It is clear that the sectioning of each intermediate sheet can be carried out in different ways, known for example by cutting using rotary knives, or by breaking after incision by means of abrupt but very brief acceleration, or by conventional break obtained by a sharp acceleration of scrolling determining the bursting of the weakening lines.

L'invention ne concerne que le mode d'insertion du ou des feuillets destinés à former les documents intérieurs et avant l'assemblage chaque feuillet est susceptible de recevoir des traitements ou des façonnages les plus divers.The invention relates only to the mode of insertion of the sheet or sheets intended to form the interior documents and before assembly each sheet is capable of receiving the most diverse treatments or shapings.

Le plus fréquemment, les divers feuillets seront guidés et entraînés le long de leurs parcours respectifs par des entraîneurs à picots coopérant avec des perforations marginales desdits feuillets. Lorsque les documents intérieurs ne doivent pas comporter de telles perforations, on disposera un dispositif classique de coupe de rives sur le parcours de feuillet intermédiaire en amont du poste de sectionnement.Most frequently, the various sheets will be guided and driven along their respective paths by pinned coaches cooperating with marginal perforations of said sheets. When the interior documents must not include such perforations, there will be a conventional device for cutting edges on the intermediate sheet path upstream of the sectioning station.

Le dispositif de scellement varie selon les moyens prévus. La solidarisation des feuillets inférieur et supérieur sur la périphérie de chacun de leurs volets peut résulter d'un simple gaufrage ou crimplockage, ou encore d'agrafage ou de couture. Le scellement peut encore être obtenu par soudure avec ou sans apport de matière. Le plus souvent cependant, la solidarisation se fera par collage, soit par collage simple, des filets de colle étant déposés sur au moins l'un des feuillets supérieur et inférieur, soit par auto-collage, des filets de substance auto-adhésive étant déposés sur chacun des deux feuillets inférieur et supérieur, soit encore par thermocollage après enduction de filets de colle activable par la chaleur sur l'un au moins des feuillets. Dans le cas de collage simple ou d'auto-collage, le dispositif comprendra, en aval des rouleaux entraîneurs, au moins une paire de rouleaux presseurs et, dans le cas de thermocollage, au moins l'une des paires de rouleaux presseurs sera constituée par des rouleaux chauffants. Lorsque le ou les documents intérieurs représentent une faible épaisseur, les rouleaux presseurs, éventuellement chauffants, peuvent être des cylindres lisses, mais lorsque l'épaisseur totale des documents intérieurs devient importante, il est avantageux de prévoir des rouleaux à empreintes creuses, le développement de chaque empreinte correspondant à l'intérieur du cadre de scellement d'un pli unitaire.The sealing device varies according to the means provided. The joining of the lower and upper sheets on the periphery of each of their flaps can result from a simple embossing or crimplockage, or stapling or sewing. Sealing can also be obtained by welding with or without the addition of material. Most often, however, the joining will be by bonding, either by simple bonding, threads of adhesive being deposited on at least one of the upper and lower sheets, or by self-bonding, threads of self-adhesive substance being deposited on each of the two lower and upper sheets, or else by heat-bonding after coating with threads of heat-activated adhesive on at least one of the sheets. In the case of simple bonding or self-bonding, the device will comprise, downstream of the driving rollers, at least one pair of pressure rollers and, in the case of heat-bonding, at least one of the pairs of pressure rollers will be formed by heated rollers. When the interior document (s) represent a small thickness, the pressure rollers, possibly heating, can be smooth cylinders, but when the total thickness of the interior documents becomes large, it is advantageous to provide hollow impression rollers, the development of each imprint corresponding to the interior of the sealing frame of a unitary fold.

Le procédé selon l'invention peut s'appliquer à la fabrication d'un ensemble continu de plis scellés, destiné à passer dans une imprimante mécanographique, mais il est particulièrement indiqué dans le cas où les documents intérieurs doivent recevoir une frappe directe, c'est-à-dire les cas où l'assemblage est effectué chez l'utilisateur.The method according to the invention can be applied to the manufacture of a continuous set of sealed folds, intended to pass through a mechanical printer, but it is particularly indicated in the case where the interior documents must receive a direct strike, it that is to say the cases where the assembly is carried out at the user's place.

L'invention a encore pour objet un dispositif de mise en oeuvre du procédé selon la revendication 1 comportant un dispositif pour l'assemblage d'un ensemble continu de plis, (voir la revendication 6), postaux ou similaires, à partir d'une pluralité de feuillets continus, à savoir un feuillet supérieur, un feuillet inférieur et au moins un feuillet intermédiaire, chaque feuillet portant un alignement de perforations marginales disposées le long d'au moins l'un de ses bords longitudinaux et destinées à coopérer avec des entraîneurs à picots pour le guidage et l'entraînement du feuillet considéré, le long d'un circuit respectif aboutissant à une paire de rouleaux entraîneurs roulant l'un contre l'autre qui constitue l'entrée d'un poste de scellement par pression, chaque feuillet portant également des lignes transversales équidistantes d'affaiblissement dont l'espacement ou «pas» est prédéterminé, caractérisé en ce que les entraîneurs à picots de chaque feuillet intermédiaire tournent plus lentement que ceux des feuillets inférieur et supérieur, tandis que le pas des lignes d'affaiblissement d'un feuillet est directement proportionnel à la vitesse de défilement dudit feuillet, que vers la fin du parcours d'approche du poste de scellement de chaque feuillet intermédiaire, est disposé un poste de coupe de rive pour l'élimination des marges perforées d'entraînement, puis un poste de mise à l'unité par sectionnement le long des lignes d'affaiblissement et que l'acheminement des tronçons successifs du feuillet intermédiaire ainsi formés jusqu'aux rouleaux entraîneurs d'entrée du poste de scellement, où ils sont introduits entre lesdits rouleaux et entre les deux feuillets inférieur et supérieur, est assuré par des moyens transporteurs tels que la vitesse moyenne entre l'instant de la rupture et celui de l'entrée au poste de scellement est sensiblement égale à la vitesse de défilement V1 des feuillets inférieur et supérieur susmentionnés.The invention also relates to a device for implementing the method according to claim 1 comprising a device for assembling a continuous set of plies, (see claim 6), postal or similar, from a plura bed of continuous sheets, namely an upper sheet, a lower sheet and at least one intermediate sheet, each sheet carrying an alignment of marginal perforations arranged along at least one of its longitudinal edges and intended to cooperate with coaches with pins for guiding and driving the sheet in question, along a respective circuit leading to a pair of driving rollers rolling against each other which constitutes the entrance to a pressure sealing station, each sheet also carrying equidistant transverse lines of attenuation whose spacing or "pitch" is predetermined, characterized in that the spikes of each intermediate sheet rotate more slowly than those of the lower and upper sheets, while the pitch of the lines weakening of a sheet is directly proportional to the running speed of said sheet, that towards the end of the approach course of the post cementing of each intermediate sheet, is arranged a bank cutting station for the elimination of the perforated drive margins, then a unit for uniting by sectioning along the weakening lines and that the routing of the sections successive of the intermediate sheet thus formed up to the entry driving rollers of the sealing station, where they are introduced between said rollers and between the two lower and upper sheets, is provided by transport means such that the average speed between the instant of the break and that of the entry to the sealing station is substantially equal to the running speed V 1 of the lower and upper sheets mentioned above.

Pour la fabrication d'un «mailer» traditionnel livré à l'utilisateur sous la forme d'un ensemble continu de plis scellés, le dispositif selon l'invention sera disposé entre la sortie d'une machine classique de façonnage comportant tout ou partie de postes d'impression, de perforations, de coupe, d'enduction de moyen de scellement, et l'entrée d'un poste de pliage en paravant. Cependant, ce dispositif peut être mis à la disposition d'un utilisateur. Dans ce cas, il est disposé en amont d'une machine de mise à l'unité (rupteur par exemple) et chacun de ses circuits est alors alimenté par un feuillet continu approprié, plié en paravent, après passage de l'un au moins des feuillets intermédiaires dans une imprimante mécanographique, le feuillet supérieur comportant de préférence une découpe rectangulaire en regard de l'emplacement d'identification du destinataire afin d'éviter toute nécessité de repérage.For the manufacture of a traditional “mailer” delivered to the user in the form of a continuous set of sealed folds, the device according to the invention will be disposed between the outlet of a conventional shaping machine comprising all or part of printing stations, perforations, cutting, coating sealing means, and the entry of a folding station in front. However, this device can be made available to a user. In this case, it is arranged upstream of a unitization machine (breaker for example) and each of its circuits is then fed by an appropriate continuous sheet, folded in screen, after passage of at least one intermediate sheets in a machine printer, the upper sheet preferably comprising a rectangular cut out opposite the recipient's identification location in order to avoid any need for tracking.

La mise à l'unité de chaque feuillet intermédiaire peut être effectuée par tout moyen connu: accélérateur instantané coopérant avec un couteau d'amorce de rupture, dispositif de coupe rotatif, ou encore rupteur classique imprimant une forte accélération du feuillet considéré, mais suivi d'au moins une paire de rouleaux d'entraînement et de régulation dont la vitesse, variable, est réglée par un détecteur de défilement.The unitization of each intermediate sheet can be carried out by any known means: instant accelerator cooperating with a break-in knife, rotary cutting device, or even conventional breaker printing a strong acceleration of the sheet considered, but followed by '' at least one pair of drive and regulation rollers whose speed, variable, is regulated by a scrolling detector.

L'invention sera mieux comprise à la lecture de la description qui va suivre et qui se réfère au dessin annexé dans lequel:

  • la figure 1 est un schéma de la partie terminale d'un dispositif d'assemblage de feuillets continus selon l'invention,
  • la figure 2 est une variante du dispositif avec modification du poste de sectionnement ainsi que du poste de scellement.
The invention will be better understood on reading the description which follows and which refers to the appended drawing in which:
  • FIG. 1 is a diagram of the terminal part of a device for assembling continuous sheets according to the invention,
  • Figure 2 is a variant of the device with modification of the sectioning station as well as the sealing station.

Sur les deux figures, les organes semblables ou jouant des rôles similaires sont repérés par des références qui diffèrent de 100.In the two figures, similar bodies or playing similar roles are identified by references which differ from 100.

A la figure 1, l'assemblage comporte trois feuillets, à savoir, un feuillet inférieur 11, un feuillet supérieur 12 et un feuillet intermédiaire 10. Chacun desdits feuillets comporte le long de l'un au moins de ses bords longitudinaux des perforations marginales (10b, 11b, 12b) et est guidé et entraîné le long d'un circuit respectif, symbolisé ici par un rouleau support (14, 15, 16), par des entraîneurs à picots (17, 18, 19). Chaque feuillet porte des lignes transversales d'affaiblissement (10a, 11a, 12a) équidistantes, deux lignes successives délimitant un volet correspondant à un pli unitaire. Sur les feuillets inférieur 11 et supérieur 12, l'espacement El des lignes d'affaiblissement est plus grand que celui E2 présenté par les lignes d'affaiblissement 10a du feuillet intermédiaire 10. L'un au moins des feuillets inférieur 11 et supérieur 12 porte des moyens de scellement le long de ses bords longitudinaux (à l'intérieur par rapport aux marges perforées d'entraînement) et des moyens de scellement chevauchant les lignes transversales d'affaiblissement 11a, 12a, ces moyens de scellement étant activables par pression ou par chaleur et pression. L'assemblage s'effectue dans un poste 20 de scellement dont l'entrée est constituée par une paire de rouleaux entraîneurs 13 roulant l'un sur l'autre, et entre lesquels sont engagés les divers feuillets, éventuellement après passage sur des rouleaux de renvoi 21. Dans le poste de scellement les feuillets supérieur et inférieur sont solidarisés, sur toute la périphérie de chacun de leurs volets grâce à des cylindres presseurs 22 éventuellement chauffants (dans le cas où les moyens de scellement sont constitués par des filets de colle thermo-adhésive). Comme il a été dit, les cylindres presseurs 22 peuvent être à empreintes creuses lorsque l'épaisseur des documents intérieurs de chacun des plis l'exige.In FIG. 1, the assembly comprises three sheets, namely, a lower sheet 11, an upper sheet 12 and an intermediate sheet 10. Each of said sheets comprises along at least one of its longitudinal edges marginal perforations ( 10b, 11b, 12b) and is guided and driven along a respective circuit, symbolized here by a support roller (14, 15, 16), by spike trainers (17, 18, 19). Each sheet carries equidistant transverse weakening lines (10a, 11a, 12a), two successive lines delimiting a flap corresponding to a unitary fold. On the lower 11 and upper 12 sheets, the spacing E l of the weakening lines is greater than that E 2 presented by the weakening lines 10a of the intermediate sheet 10. At least one of the lower 11 and upper sheets 12 carries sealing means along its longitudinal edges (inside with respect to the perforated drive margins) and sealing means straddling the transverse weakening lines 11a, 12a, these sealing means being activatable by pressure or by heat and pressure. The assembly is carried out in a sealing station 20, the inlet of which consists of a pair of driving rollers 13 rolling one on top of the other, and between which the various sheets are engaged, possibly after passing over rollers. reference 21. In the sealing station, the upper and lower sheets are joined together, over the entire periphery of each of their flaps by means of pressing cylinders 22 which may be heated (in the case where the sealing means are constituted by threads of thermo glue -adhesive). As has been said, the pressing cylinders 22 can be hollow impressions when the thickness of the interior documents of each of the folds requires it.

Pour disposer un document intérieur dans chacun des plis, c'est-à-dire pour introduire un tronçon de feuille entre les feuillets supérieur et inférieur, sans que ledit tronçon puisse être «pris» par le scellement, mais au contraire reste libre à l'intérieur du pli scellé afin de ne pas gêner son extraction par le destinataire, les dispositions suivantes ont été prises.To have an interior document in each of the folds, that is to say to introduce a section of sheet between the upper and lower sheets, without said section being able to be "taken" by the sealing, but on the contrary remains free to 'inside the sealed fold so as not to hinder its extraction by the recipient, the following arrangements have been made.

Le feuillet intermédiaire 10 est un peu moins large que les feuillets 11 et 12. Comme il a été dit, la hauteur E2 des volets du feuillet 10 est inférieur à la hauteur E1 des volets des feuillets 11 et 12. La différence de largeur et de hauteur des volets de la bande 10 par rapport à ceux des bandes 11 et 12 est au moins égale à deux fois la largeur d'un filet de scellement pour que le document intérieur puisse tenir entièrement à l'intérieur du cadre de scellement. Il suffit alors que le bord supérieur d'un volet du feuillet 10 soit engagé entre les rouleaux entraîneurs 13 légèrement plus tard que les bords supérieurs des volets des feuillets 11 et 12 et que ledit volet intermédiaire se soit détaché de la bande continue 10 pour se loger convenablement entre les feuillets 11 et 12. Pour cela, les rouleaux 13 ont une vitesse tangentielle égale à la vitesse de défilement V1 des feuillets 11 et 12, tandis que la vitesse de défilement V2 du feuillet 10 imposée par les entraîneurs tels que 17 est inférieure à V, et telle queThe intermediate sheet 10 is a little narrower than the sheets 11 and 12. As has been said, the height E 2 of the flaps of the sheet 10 is less than the height E 1 of the flaps of the sheets 11 and 12. The difference in width and height of the flaps of strip 10 compared to those of strips 11 and 12 is at least twice the width of a sealing thread so that the inner document can fit entirely inside the sealing frame. It suffices then that the upper edge of a flap of the sheet 10 is engaged between the driving rollers 13 slightly later than the upper edges of the flaps of the sheets 11 and 12 and that said intermediate flap is detached from the continuous strip 10 to fit properly between the sheets 11 and 12. For this, the rollers 13 have a tangential speed equal to the running speed V 1 of the sheets 11 and 12, while the running speed V 2 of the sheet 10 imposed by the coaches such as 17 is less than V, and such that

Figure imgb0002
Figure imgb0002

En outre, lorsque le bord supérieur de chaque volet du feuillet 10 est pincé par les rouleaux 13, le feuillet 10 est soumis à une très brusque accélération qui entraîne l'éclatement dudit feuillet le long de la ligne d'affaiblissement 10a la plus proche, libérée des picots. Afin de faciliter cet éclatement, il est avantageux de prévoir une amorce de rupture par incision de cette ligne 10a, de façon connue, grâce à un couteau 23 placé en amont des rouleaux 13 et à une distance de ces derniers au moins égale à E2 pour que l'incision soit effectuée avant le début de l'accélération mais inférieure à deux fois cette longueur E2 pour qu'au moment de l'accélération, une seule ligne 10a soit incisée.In addition, when the upper edge of each flap of the sheet 10 is pinched by the rollers 13, the sheet 10 is subjected to a very sudden acceleration which causes the said sheet to burst along the nearest line of weakness 10a, released from the pins. In order to facilitate this bursting, it is advantageous to provide an incipient fracture by incision of this line 10a, in known manner, by virtue of a knife 23 placed upstream of the rollers 13 and at a distance from the latter at least equal to E 2 so that the incision is made before the start of acceleration but less than twice this length E 2 so that at the time of acceleration, a single line 10a is incised.

L'éclatement se produit au moment de l'accélération et une ondulation temporaire se forme immédiatement en aval du moyen accélérateur, sans qu'il y ait modification du défilement tant à la vitesse V2 en amont, qu'à la vitesse V1 en aval. L'accélérateur instantané peut être constitué par exemple par une paire de rouleaux 24, 25 dont l'un au moins 24 est à la fois moteur et à section elliptique, et dont la vitesse tangentielle à l'extrémité du grand axe est, par exemple, égale à deux fois V2.The bursting occurs at the time of acceleration and a temporary ripple is formed immediately downstream of the accelerator means, without there being any modification of the scrolling both at speed V 2 upstream and at speed V 1 in downstream. The instantaneous accelerator can be constituted for example by a pair of rollers 24, 25 of which at least one 24 is both motor and of elliptical section, and whose tangential speed at the end of the major axis is, for example , equal to twice V 2 .

Si les perforations marginales sont gênantes pour le document intérieur, un coupe-rive 26 peut être prévu en amont du couteau 23.If the marginal perforations are inconvenient for the interior document, a cutter 26 can be provided upstream of the knife 23.

Lorsque l'on parle d'un «feuillet» intermédiaire 10, il doit être bien compris qu'il s'agit d'un ensemble continu dont chaque tronçon doit être logé à l'intérieur d'un pli unitaire respectif, mais que ce «feuillet» peut comporter plusieurs épaisseurs, soit parce qu'il forme lui-même une liasse mince de plusieurs bandes continues, soit parce qu'il résulte de pliage longitudinal d'une bande large. Dans ce dernier cas, un guide de pliage (non représenté) est disposé à l'entrée du circuit du feuillet 10.When we speak of an intermediate “sheet” 10, it must be understood that it is a continuous assembly, each section of which must be housed inside a respective unitary fold, but that this "Sheet" may have several thicknesses, either because it itself forms a thin bundle of several continuous strips, or because it results from longitudinal folding of a wide strip. In the latter case, a folding guide (not shown) is arranged at the entrance to the circuit of the sheet 10.

A la figure 2, on retrouve un assemblage 136 de trois feuillets, à savoir un feuillet inférieur 111, un feuillet supérieur 112 et un feuillet intermédiaire 110. Chacun de ces feuillets suit un parcours distinct l'amenant, éventuellement après passage sur des rouleaux de renvoi 121, à l'entrée 144d'un poste de scellement où il est pris entre deux rouleaux entraîneurs 113. Dans l'exemple représenté, les volets de l'un au moins des feuillets inférieur 111 et supérieur 112, comportent chacun un cadre périphérique d'enduction thermofusible et le poste de scellement est un poste de thermo- soudage avec un four 143 et des rouleaux presseurs 122 à empreintes creuses comme il a été dit ci-avant. Sur leurs parcours respectifs, les feuillets 111 et 112 défilent à la même vitesse Vi imposée par des entraîneurs à picots (non représentés) qui coopèrent avec des perforations marginales desdits feuillets, les rouleaux entraîneurs 113 ont une vitesse tangentielle égale à V1 et l'ensemble des deux feuillets 111 et 112 enserrant les feuillets intermédiaires tels que 110 est repris, immédiatement en aval des rouleaux 113, par des transporteurs à picots 141 tournant à la vitesse VI. Les rouleaux presseurs 122 tournent à cette même vitesse qui est la vitesse de défilement de l'assemblage 136 à la sortie du poste de scellement. Sauf si l'assemblage 136 doit passer ultérieurement dans des machines de traitement comportant des entraîneurs à picots, les perforations marginales superposées des feuillets 111 et 112 deviennent inutiles dès lé début du processus d'assemblage et dans l'exemple représenté, on a disposé un dispositif coupe-rives 142 semblable au dispositif 126 placé sur le parcours du feuillet intermédiaire 110 et qui sera décrit plus en détail ci-après.In FIG. 2, there is an assembly 136 of three sheets, namely a lower sheet 111, an upper sheet 112 and an intermediate sheet 110. Each of these sheets follows a separate path leading it, possibly after passing over rollers of reference 121, at the entry 144 of a sealing station where it is caught between two driving rollers 113. In the example shown, the flaps of at least one of the lower 111 and upper 112 sheets, each have a peripheral frame of hot-melt coating and the sealing station is a heat-welding station with an oven 143 and pressing rollers 122 with hollow impressions as has been said above. On their respective routes, the sheets 111 and 112 pass at the same speed V i imposed by spike coaches (not shown) which cooperate with marginal perforations of said sheets, the driving rollers 113 have a tangential speed equal to V 1 and l 'the set of two sheets 111 and 112 enclosing the intermediate sheets such as 110 is taken up, immediately downstream of the rollers 113, by spiked conveyors 141 rotating at speed V I. The pressure rollers 122 rotate at the same speed which is the running speed of the assembly 136 at the outlet of the sealing station. Unless the assembly 136 has to pass later in processing machines comprising spindle drives, the superimposed marginal perforations of the sheets 111 and 112 become unnecessary from the start of the assembly process and in the example shown, a edge-cutting device 142 similar to device 126 placed on the path of the intermediate sheet 110 and which will be described in more detail below.

Comme précédemment, le feuillet 110 est moins large que les feuillets 111 et 112 qui, eux, sont de même largeur pour pouvoir se superposer exactement. Chaque feuillet présente des lignes transversales d'affaiblissement équidistantes. L'écartement de ces lignes est de E1 sur les feuillets 111 et 112 et de E2<El sur le feuillet 110. Enfin, le feuillet 110 défile à une vitesse V2, imposée par des entraîneurs à picots 117, telle queAs before, the sheet 110 is narrower than the sheets 111 and 112 which, themselves, are of the same width in order to be able to overlap exactly. Each sheet has equidistant transverse lines of weakening. The spacing of these lines is E 1 on the sheets 111 and 112 and E 2 <E l on the sheet 110. Finally, the sheet 110 scrolls at a speed V 2 , imposed by spike trainers 117, such that

Figure imgb0003
Figure imgb0003

Comme dans le mode de réalisation précédent, l'invention réside dans le mode d'insertion du feuillet intermédiaire 110 ou, plus précisément, des tronçons provenant de l'éclatement du feuillet 110 le long de ses lignes transversales d'affaiblissement. Après le dernier entraîneur à picots 117, le feuillet 110 passe dans un coupe-rive 126 simple ou double selon que le feuillet présente des perforations marginales d'entraînement le long d'un seul bord (par exemple, feuillet large plié longitudinalement à l'entrée de son parcours respectif) ou le long de ses deux longitudinaux. Le coupe-rive 126 comporte, de façon connue, un dispositif à molettes 126a pour couper de façon continue la zone marginale correspondante et un tronçonneur rotatif 126b pour réduire en morceaux de faible longueur la bande continue détachée par les molettes 126a. En aval du coupe-rive 126, le feuillet 110 passe dans un «éclateur» ou rupteur constitué essentiellement, de façon traditionnelle, d'une part, par deux paires de rouleaux, à savoir une première paire 130 dont la vitesse tangentielle est sensiblement égale à V2 et une seconde paire de rouleaux 131 dont la vitesse tangentielle est sensiblement égale à 2 V2 et, d'autre part, par un coin 133 d'amorce de rupture disposé entre les deux paires de rouleaux précitées et destiné à s'abaisser au passage de chaque ligne d'affaiblissement de manière à l'<<enforcen> sur au moins une partie de sa longueur. Après le rupteur, chaque tronçon du feuillet 10 est repris par des rouleaux ralentisseurs 132 dont la vitesse est réglée automatiquement par les signaux provenant d'un indicateur de position 135 de manère telle que l'espacement entre deux tronçons de feuillets successifs soit constant et égal à El-E2, ce qui revient à dire que les rouleaux ralentisseurs 132 ramènent la vitesse moyenne entre le moment de la rupture et l'entrée 144 du poste de scellement à une valeur sensiblement égale à V1. Il est avantageux de prévoir, sur le parcours des tronçons de feuillet, au moins un indicateur 134 de présence et/ou de bourrage.As in the previous embodiment, the invention resides in the mode of insertion of the intermediate sheet 110 or, more precisely, of sections coming from the bursting of the sheet 110 along its transverse lines of weakness. After the last pin driver 117, the sheet 110 passes through a single or double edge cutter 126 depending on whether the sheet has marginal drive perforations along a single edge (for example, wide sheet folded longitudinally at the entry of its respective course) or along its two longitudinal ones. The edge cutter 126 comprises, in known manner, a knurling device 126a for continuously cutting the corresponding marginal zone and a rotary cutter 126b for cutting into short pieces the continuous strip detached by the knobs 126a. Downstream of the edge cutter 126, the sheet 110 passes through a "spark gap" or breaker constituted essentially, in the traditional way, on the one hand, by two pairs of rollers, namely a first pair 130 whose tangential speed is substantially equal at V 2 and a second pair of rollers 131 whose speed tan gential is substantially equal to 2 V 2 and, on the other hand, by a wedge 133 of initiation of rupture arranged between the two pairs of rollers mentioned above and intended to be lowered with the passage of each line of weakening so as to '<<enforcen> over at least part of its length. After the breaker, each section of the sheet 10 is taken up by retarder rollers 132 the speed of which is automatically adjusted by the signals coming from a position indicator 135 so that the spacing between two sections of successive sheets is constant and equal at E 1 -E 2 , which amounts to saying that the retarder rollers 132 reduce the average speed between the moment of failure and the input 144 of the sealing station to a value substantially equal to V 1 . It is advantageous to provide, on the route of the sheet sections, at least one indicator 134 of presence and / or jamming.

Bien entendu, dans les deux modes de réalisation, que ce soit celui de la figure 1, avec accélération ponctuelle instantanée sur la partie amont d'un volet dont la tête est entraînée à la vitesse V1, ou celui de la figure 2, avec accélération puis ralentissement de chaque tronçon et contrôle de sa position relative par rapport au tronçon précédent, chaque tronçon doit être pris par un moyen d'entraînement aval au plus tard à l'instant où il échappe à un moyen d'entraînement amont, c'est-à-dire qu'il faut pouvoir régler l'écartement des différents postes (26, 23, 24, 13 et 126, 133, 131, 132, 113) en fonction du format E2 des volets du feuillet 10 ou 110. Pour cela, ces divers postes peuvent coulisser le long de glissières prévues sur la machine et être bloqués en position relative, les chemins de glissement du feuillet 10 ou 110 puis des tronçons de ce feuillet étant constitués par des tapis pouvant se dévider d'enrouleurs à rappel élastique comme cela est représenté à titre d'exemple, à la figure 2, avec les tapis de glissement 137 et 138 et leurs enrouleurs respectifs 139 et 140.Of course, in the two embodiments, whether that of FIG. 1, with instantaneous point acceleration on the upstream part of a flap whose head is driven at speed V 1 , or that of FIG. 2, with acceleration then deceleration of each section and control of its relative position with respect to the previous section, each section must be taken by a downstream drive means at the latest when it escapes from an upstream drive means, this that is to say, it is necessary to be able to adjust the spacing of the different stations (26, 23, 24, 13 and 126, 133, 131, 132, 113) according to the format E 2 of the flaps of sheet 10 or 110. For this, these various positions can slide along the slideways provided on the machine and be locked in relative position, the sliding paths of the sheet 10 or 110 then sections of this sheet being constituted by belts which can be unwound from reels at elastic reminder as shown by way of example le, in FIG. 2, with the sliding belts 137 and 138 and their respective reels 139 and 140.

Dans le cadre de la fabrication d'un mailer traditionnel, le dispositif de la figure 1 ou de la figure 2 est incorporé à la chaîne de fabrication et constitue une partie de la machine de façonnage. Chaque feuillet se déroule d'une bobine respective et passe par les divers postes traditionnels d'impression, de perforations, de coupes, d'encollage ou autres enductions pour arriver à la partie terminale représentée. Cependant, bien évidemment, le défilement des feuillets intermédiaires doit être moins rapide que celui des feuillets supérieur et inférieur d'un bout à l'autre du façonnage. En aval du poste de scellement le façonnage est achevé dans un poste de pliage en paravent, éventuellement après adjonction par gaufrage latéral d'une bande de couverture.In the context of the manufacture of a traditional mailer, the device of FIG. 1 or of FIG. 2 is incorporated into the production line and constitutes a part of the shaping machine. Each sheet takes place from a respective reel and passes through the various traditional printing, perforating, cutting, gluing or other coating stations to arrive at the terminal part shown. However, of course, the scrolling of the intermediate sheets must be slower than that of the upper and lower sheets from one end of the shaping to the other. Downstream of the sealing station, the shaping is completed in a folding folding station, possibly after addition by lateral embossing of a cover strip.

Cependant, le procédé d'insertion des documents intérieurs avec le dispositif décrit ci-avant, se prête particulièrement bien à la mise en oeuvre chez l'utilisateur, ce qui permet de résoudre bien des problèmes. En effet, il suffit à l'utilisateur d'alimenter le dispositif à partir de «paravents» des divers feuillets, les feuillets 11 et 12 (ou 111 et 112) lui étant fournis, éventuellement avec impressions diverses, prêts à l'emploi et les feuillets 10 (ou 110) ayant été préalablement remplis par son imprimante mécanographique (en frappe simple, ou en Y avec pliage longitudinal). Ainsi, au moins un, mais éventuellement tous les documents intérieurs peuvent recevoir une frappe directe permettant une exploitation par lecture optique ou magnétique. Pour cette nise en oeuvre par l'utilisateur, on évitera le scellement par colle ordinaire (nécessitant un poste d'encollage dans le dispositif) et l'on préférera un poste de ther- mosoudage pour l'activation de filets thermo- adhésifs déposés de fabrication sur le feuillet 11 et/ou le feuillet 12 (ou 111 et 112). En aval du poste de scellement, l'assemblage est acheminé directement ou non vers un appareil de mise à l'unité et éventuellement d'affranchissement. Afin d'éviter tout besoin de repérage, le feuillet supérieur 12 (ou 112) est muni de fenêtres 27 correspondant à l'emplacement de l'identification du destinataire sur le feuillet 10 (ou 110); cependant, pour éliminer une gâche éventuelle, il est utile de prévoir en divers points des circuits des divers feuillets des indicateurs de présence (palpeurs ou cellules photo-électriques).However, the method of inserting interior documents with the device described above, lends itself particularly well to implementation by the user, which makes it possible to solve many problems. Indeed, it suffices for the user to feed the device from “screens” of the various sheets, sheets 11 and 12 (or 111 and 112) being supplied to him, possibly with various prints, ready to use and sheets 10 (or 110) having been previously filled in by its machine printer (by simple typing, or in Y with longitudinal folding). Thus, at least one, but possibly all interior documents can receive a direct strike allowing an exploitation by optical or magnetic reading. For this installation by the user, we will avoid sealing with ordinary glue (requiring a gluing station in the device) and we will prefer a thermosoldering station for the activation of thermo-adhesive nets deposited from manufacturing on sheet 11 and / or sheet 12 (or 111 and 112). Downstream of the sealing station, the assembly is routed directly or not to a uniting unit and possibly franking. In order to avoid any need for tracking, the upper sheet 12 (or 112) is provided with windows 27 corresponding to the location of the identification of the recipient on the sheet 10 (or 110); however, to eliminate possible waste, it is useful to provide at various points with circuits of the various sheets of presence indicators (feelers or photocells).

Dans le cas le plus courant où l'on prévoit des fenêtres 27 et où le feuillet 10 (ou 110) est unique, avec pliage longitudinal éventuel, il faut remarquer que, non seulement le document intérieur ou les deux documents intérieurs reçoivent une frappe directe, avec tous les avantages que cela comporte (netteté, exploitation par lecture optique ou magnétique) mais, en outre, il n'y a besoin d'aucun report de la frappe d'un élément à l'autre. Ainsi, tous les feuillets sont en papier ordinaire, ce qui correspond à une importante économie par rapport aux articles similaires actuellement connus.In the most common case where windows 27 are provided and where the sheet 10 (or 110) is unique, with possible longitudinal folding, it should be noted that not only the interior document or the two interior documents receive a direct strike , with all the advantages that this entails (sharpness, exploitation by optical or magnetic reading) but, moreover, there is no need for any transfer of the striking from one element to another. Thus, all the sheets are made of plain paper, which corresponds to a significant saving compared to similar articles currently known.

L'invention n'est pas limitée à l'exemple de réalisation décrit et représenté. Tout d'abord elle concerne uniquement le mode d'insertion du ou des documents intérieurs, quels que soient les traitements et façonnages subis par les feuillets continus avant leur mise en superposition et quel que soit le moyen d'assemblage des feuillets supérieur et inférieur (collage, soudure, thermocollage par cylindres chauffants ou par passage dans un four ou par tout autre moyen de chauffage etc.). En outre, des modifications peuvent être apportées aux moyens mécaniques utilisés pour la mise en oeuvre du procédé, sans pour cela sortir du cadre de l'invention.The invention is not limited to the embodiment described and shown. First of all, it only concerns the mode of insertion of the interior document (s), whatever the treatments and shapings undergone by the continuous sheets before they are superimposed and whatever the means of assembling the upper and lower sheets ( bonding, welding, heat sealing by heating cylinders or by passage through an oven or by any other heating means, etc.). In addition, modifications can be made to the mechanical means used for implementing the method, without thereby departing from the scope of the invention.

Claims (10)

1. A method of making continuous mailing or similar closed envelope forms with inserts consisting of uniting a lower continuous web (11, 111) and an upper continuous web (12, 112) by sealing along their longitudinal edges and along transverse bands overlapping corresponding weakening lines (11a, 12a) with a constant spacing E1 and intended for separating the continuous forms into single envelopes, this sealing being achieved in particular by pressure in a station having at its entrance at least one pair of entrainment rolls (13, 113) between which the two above mentioned webs are engaged, moved towards said entrance at the same speed V1 equal to the tangential speed of the entrainment rolls, along separate paths, characterised in that it consists of guiding and entraining at least one intermediate web (10, 110) with a width less than that of the lower web (11, 111) and the upper web (12, 112) and provided with weakening lines (10a) having a constant spacing E2 less than E1 towards the entrainment rolls (13, 113) at the entrance to the sealing station at a speed V2 less than V1 along respective paths, all this being done such that V2/ VI=E2/El, and of dividing said intermediate web (10,110) along each of its weakening lines (10a) at the moment when they pass into a dividing station located upstream of the sealing station, and lastly, successively bringing each of the sections of the intermediate web (10, 110) in question thus formed into engagement with the entrainment rolls (13, 113) at the entrance of the sealing station between the lower web (11, 111) and the upper web (12, 112) mentioned above at an average speed substantially equal to V1.
2. A method as in claim 1, characterised in that in the dividing station for an intermediate web an incision to start the break is made in each of the weakening lines (10a) at a distance from the entrance of the sealing station equal to between 1 and 2 times the spacing E2 of the weakening lines (10a) of the intermediate web (10, 110) in question and in that the intermediate web in question is subjected to an instant acceleration produced, at the earliest, at the same time as the incision, at a distance from the above-mentioned entrance of less than E2-
3. A method as in claim 1, characterised in that in the dividing station the separation of the intermediate web in question is the result of a cut and in that the instant at which the cutting of a section ends coincides with that of engagement of the opposite end of said section between the rolls at the entrance of the sealing station, i.e. coincides with the start of entrainment of the section in question at the speed V1.
4. A method as in claim 1, characterised in that at a distance from the entrainment rolls (13, 113) at the entrance of the sealing station greater than E2, each intermediate web (10, 110) is firstly subjected to a sudden acceleration imparting to it a speed V3 considerably greater than V2 so as to ensure clean separation of the successive sections of said web by bursting along the weakening lines (10a), then to a controlled deceleration bringing the average speed of each section substantially down to the value V1 in this last part of the path before its entry in the sealing station.
5. A method as in any one of the claims 1 to 4, characterised in that at least one of the intermediate webs is formed by longitudinally folding a wider web, this folding being achieved in a known manner at the entrance to the respective path of said web.
6. A device for assembling continuous mailing or similar envelope forms by the method indicated in claim 1 from a plurality of continuous webs, namely an upper web (12, 112), a lower web (11, 111) and at least one intermediate web (10, 110), each web having a line of marginal perforations (10b, 11b, 12b) disposed along at least one of its longitudinal edges and intended to co-operate with tractor feeds (17-19, 117) for guidance and entrainment of the web in question along a respective circuit ending at a pair of contra rotating entrainment rolls (13, 113) constituting the entrance of a pressure sealing station (20), each web also exhibiting equidistant transverse weakening lines (10a, 11a, 12a) with a predetermined spacing or «pitch», characterised in that the tractor feeds (17, 117) for each intermediate web (10, 110) turn more slowly than those (18, 19) for the lower web (11, 111) and the upper web (12, 112) whereas the spacing of the weakening lines of a web is directly proportional to the speed of movement of said web, in that towards the end of the path leading up to the sealing station for each intermediate web (10, 110) there is an edge cutting station (26, 126) to eliminate the perforated entrainment margins, then a station for division into units by separation along the weakening lines (10a) and in that the movement of the successive sections of the intermediate web thus formed up to the entrainment rolls (13, 113) at the entrance of the sealing station where they are introduced between said rolls and between the lower web (11, 111) and the upper web (12,112) is effected by conveying means such that the average speed between the moment of break and that of entering the sealing station is substantially equal to the speed of passage V1 of the lower web (11, 111) and the upper web (12, 112) mentioned above.
7. A device as in claim 6 for assembling continuous forms by the method described in claim 2, characterised in that the station for splitting each intermediate web (10, 110) into units consists firstly of a knife (23) to start the breaking of the weakening lines (10a) located upstream of the entrainment rolls (13) at the entrance of the sealing station at a distance from the latter of between 1 and 2 times the pitch of said weakening lines, and secondly of a means (24) for instantaneous acceleration working intermittently essentially in synchronisation with the knife and located between said entrainment rolls (13) and said knife (23) to start the break.
8. A device as in claim 6 for assembling continuous forms by the method described in claim 3, characterised in that the station for separating each intermediate web into units is constituted by a rotary cutting device the tangential speed of which is equal to the speed of passage of the web in question upstream of said station and in that it is disposed in such a way that the instant at which the cutting of a section ends coincides with the start of entrainment of said section between the lower and the upper web.
9. A device as in claim 6 for assembling continuous forms as in claim 4, characterised in that the station for separating each intermediate web into units is constituted by a breaking unit from which each section of the web in question, subjected to sharp acceleration, emerges at a speed greater than V1 and in that said breaking means is followed by at least one pair of entrainment and control rolls the speed of rotation of which is regulated automatically by the signals supplied by a sensor located downstream so as to adjust the mean speed between the break and the entrance of the sealing station to a value substantially equal to V1.
10. A device as in any one of claims 6 to 9, characterised in that a device for longitudinal folding is disposed at the entrance to the path of at least one intermediate web.
EP80401573A 1980-11-04 1980-11-04 Method and device for making continuous mailing envelope forms or others Expired EP0051099B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8080401573T DE3067569D1 (en) 1980-11-04 1980-11-04 Method and device for making continuous mailing envelope forms or others
EP80401573A EP0051099B1 (en) 1980-11-04 1980-11-04 Method and device for making continuous mailing envelope forms or others
AT80401573T ATE7123T1 (en) 1980-11-04 1980-11-04 METHOD AND APPARATUS FOR MAKING AN ENDLESS WEB OF ENVELOPES OR THE LIKE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80401573A EP0051099B1 (en) 1980-11-04 1980-11-04 Method and device for making continuous mailing envelope forms or others

Publications (2)

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EP0051099A1 EP0051099A1 (en) 1982-05-12
EP0051099B1 true EP0051099B1 (en) 1984-04-18

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EP80401573A Expired EP0051099B1 (en) 1980-11-04 1980-11-04 Method and device for making continuous mailing envelope forms or others

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AT (1) ATE7123T1 (en)
DE (1) DE3067569D1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE457714B (en) * 1983-01-25 1989-01-23 Ragnar Winberg PREDICTED LETTER SHIPPING AND PROCEDURES FOR ITS PREPARATION
US4668212A (en) * 1984-12-19 1987-05-26 Iseto Shiko Co. Ltd. Process for manufacturing sealed postal envelope assemblies
ATE58706T1 (en) * 1986-08-12 1990-12-15 Herve & Fils Sa APPARATUS AND METHOD FOR FOLDING A WEB INTO CONTINUOUS THREE-PIECE FOLDERS.
DE3930708A1 (en) * 1989-09-14 1991-03-21 Bernhard Ehret DEVICE FOR GATHERING FLAT-ORIGINAL RAILS
JPH0790676B2 (en) * 1990-10-12 1995-10-04 東洋食品機械株式会社 Method and apparatus for manufacturing communication body such as postcards and envelopes

Citations (1)

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US4095695A (en) * 1977-04-18 1978-06-20 Wallace Business Forms, Inc. Stuffed sealed envelope assembly and method of making

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US3526562A (en) * 1965-10-22 1970-09-01 Ernest A Dahl Jr Magnetically actuatable business machine card,method of making the same and apparatus therefor
US3902655A (en) * 1974-05-13 1975-09-02 Harold W Huffman Method of producing multi-panel mailing envelope forms in side-by-side interconnected series
US3941308A (en) * 1974-10-31 1976-03-02 The Standard Register Company Continuous mailer envelope assembly with inserts and method
FR2365491A1 (en) * 1976-09-28 1978-04-21 Herve & Fils Sa STACKABLE ASSEMBLIES FOR THE CONSTITUTION OF POSTAL OR OTHER CASES
DE2809472A1 (en) * 1978-03-04 1979-09-06 Haag & Sohn Gmbh R ENDLOCK POCKET STRIP AND METHOD OF MANUFACTURING THE SAME
GB1595018A (en) * 1978-05-19 1981-08-05 Moore Business Forms Ltd Apparatus for folding heat sealing and detaching webs

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US4095695A (en) * 1977-04-18 1978-06-20 Wallace Business Forms, Inc. Stuffed sealed envelope assembly and method of making

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DE3067569D1 (en) 1984-06-28
EP0051099A1 (en) 1982-05-12
ATE7123T1 (en) 1984-05-15

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