EP1240021A1 - Sleeve comprising means for fixing printing plates and method for making same - Google Patents

Sleeve comprising means for fixing printing plates and method for making same

Info

Publication number
EP1240021A1
EP1240021A1 EP00990079A EP00990079A EP1240021A1 EP 1240021 A1 EP1240021 A1 EP 1240021A1 EP 00990079 A EP00990079 A EP 00990079A EP 00990079 A EP00990079 A EP 00990079A EP 1240021 A1 EP1240021 A1 EP 1240021A1
Authority
EP
European Patent Office
Prior art keywords
support
sticky
sleeve
layer
printing plates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00990079A
Other languages
German (de)
French (fr)
Other versions
EP1240021B1 (en
Inventor
Laurent Aubanel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MacDermid Graphics Solutions Europe SAS
Original Assignee
MacDermid Graphic Arts SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MacDermid Graphic Arts SAS filed Critical MacDermid Graphic Arts SAS
Publication of EP1240021A1 publication Critical patent/EP1240021A1/en
Application granted granted Critical
Publication of EP1240021B1 publication Critical patent/EP1240021B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N6/00—Mounting boards; Sleeves Make-ready devices, e.g. underlays, overlays; Attaching by chemical means, e.g. vulcanising
    • B41N6/02—Chemical means for fastening printing formes on mounting boards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1262—Devices for attaching printing elements or formes to supports for attaching flexible printing formes without tensioning means
    • B41F27/1275—Devices for attaching printing elements or formes to supports for attaching flexible printing formes without tensioning means by means of adhesives, staples
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F30/00—Devices for attaching coverings or make-ready devices; Guiding devices for coverings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2200/00—Printing processes
    • B41P2200/10—Relief printing
    • B41P2200/12—Flexographic printing

Definitions

  • the invention relates to the field of printing and more particularly the fixing of printing plates or plates on cylinders supporting printing machines or on sleeves provided on these cylinders.
  • These printing plates conventionally comprise a layer of photopolymer, placed on a support. Before the printing plate is used, the photopolymer layer is developed to obtain a layer with reliefs which will make it possible to reproduce the image to be printed.
  • the printing plates are generally reused several times. It is therefore desirable to have fixing means which effectively maintain the plates during printing, while allowing their removal from the plate cylinder or from the sleeve fixed on the cylinder, for subsequent reuse.
  • Known means for fixing the printing plates consist of strips of double-sided adhesive.
  • Each strip of adhesive is fixed by an adhesive side, directly on the plate cylinder or on a sleeve fixed on the cylinder, while one or more printing plates are fixed on the other side of the strip.
  • the object of the invention is to overcome these drawbacks by proposing a sleeve, intended to be fixed to a cylinder and comprising means for fixing printing plates which are of simple manufacture and of low cost price.
  • the invention thus relates to an endless sleeve, comprising at least one support of substantially cylindrical shape and the outer surface of which is covered with at least one layer of a sticky and permanently adherent material, said sleeve being intended to be mounted. on a support cylinder, while its outer surface allows removable fixing by adhesion of printing plates.
  • the term “sticky and permanently adherent material” is understood to mean a material whose bonding and adhesion properties last over time, typically for a period of at least 8 to 12 months.
  • the sleeve according to the invention after its mounting on a support cylinder or plate holder, avoids the use of double-sided adhesive.
  • the entire outer surface of the assembly, consisting of the cylinder and the sleeve, is permanently sticky and adherent, which allows printing plates to be fixed directly to it. No prior positioning and fixing operation of a double-sided adhesive is therefore necessary.
  • the printing plates can be easily removed from the outer surface of the sleeve for later use.
  • This sleeve has a much lower cost price than double-sided adhesives, thanks to specific manufacturing processes.
  • the continuity of the sleeve according to the invention makes it possible to eliminate the drawbacks linked to the use of fixing means comprising seals. Indeed, the presence of seals conventionally causes printing defects and therefore loss of paper.
  • the sticky and permanently adherent material is based on polymers.
  • this material is a crosslinked photopolymer.
  • the total thickness of the sticky and permanently adherent materials is preferably between 10 and 500 ⁇ m (microns).
  • the support of the sleeve according to the invention is advantageously compressible.
  • the invention also relates to a method for obtaining a sleeve as described above, this method consisting in: placing a support of substantially cylindrical shape in an annular coating machine and in
  • the support is arranged vertically in said machine, the latter comprising an annular container containing said material and placed around said support, the support and the container being driven in a relative movement of vertical translation in order to deposit said layer. on the support.
  • FIG. 2 is a schematic view of a machine for applying the material by spraying.
  • the reference 1 designates means for holding a substantially cylindrical support 2 in a vertical position. These means 1 may in particular consist of a cylinder.
  • the support 2 is in particular made of a composite material such as an epoxy resin matrix reinforced with fibers.
  • the machine also includes an annular reservoir 3 which contains a sticky and permanently adherent material.
  • the support 2 is fixed and the machine comprises means 5 associated with the container 3 for moving it vertically or even along the axis 20 of the support 2.
  • a machine could also be provided with a fixed annular container 3 and means for moving the support 2 along its axis 20.
  • the means of translation of the annular container 3 are for example constituted by two nuts 6,7 fixed to the container 3, in diametrically opposite positions, each of these nuts being designed to cooperate with a threaded rod 8,9. Furthermore, suitable means 10, 11 are provided for driving each of these threaded rods 8, 9.
  • the coating of the support 2 is carried out by controlling the drive means 10, 11 of the threaded rods 8, 9, so that the annular container 3 moves along the axis 20, for example from top to bottom.
  • the annular container 3 is designed to deposit, on the support 2, a layer of the sticky and adherent material which it contains, the thickness of which is between 10 and 250 ⁇ m (microns). It is of course possible to repeat the operation to increase the total thickness of the sticky materials on the support 2.
  • This material is advantageously based on polymers.
  • means 12 are provided for crosslinking the polymer deposited on the support 2.
  • polymers based on carboxylated nitrile polymers based on carboxylated nitrile, polyisoprene, acrylic resin, silicone, polychloroprene, ethylene vinyl acetate, butyl and polyurethane.
  • Cross-linking can be obtained by various means, in particular by exposure to UV light in the case of photopolymers, or also by application of heat.
  • these materials After crosslinking, these materials have a sticky nature, allowing the removable fixing of printing plates, which is characterized by a "sticky” or “tack” expressed in g / cm and measured for example on a device of the MONSANTO brand and of the type “TELTAK” with procedures known per se.
  • the "sticky” values corresponding to adhesives according to the invention are typically in the range of about 50 to 500 g / cm.
  • a printing plate previously fixed on a support, can be removed therefrom without part of the adhesive layer remaining fixed on the plate.
  • the crosslinking of the polymer is not necessarily carried out in the induction machine itself, but this mode of implementation has obvious advantages.
  • annular coating process allows the application of layers of material whose thickness is relatively thin.
  • the sticky and permanently adherent material which is deposited on the support 2 is relatively expensive.
  • the possibility of applying relatively thin layers of material makes it possible to reduce the cost price of the sleeve according to the invention, compared with known fixing means and in particular double-sided adhesives.
  • FIG. 2 schematically illustrates an installation for projecting the sticky material and adhering to the support cylinder Z capable of being driven in rotation, as indicated by arrows.
  • the material is projected onto the exterior surface of the cylinder 2 by a projection head 14 movable along a guide device 15 extending parallel to the axis of the support, under the effect of a control device 16.
  • a control device 16 Such a device is known per se and does not need to be explained in more detail.
  • the sleeve only comprises a layer of a sticky and permanently adherent material.
  • the invention is not limited to this example and in particular, the sleeve may comprise different layers, applied successively, produced or not with the same sticky material and permanently adhered.
  • the application of several successive layers on the support, during the manufacture of the sleeve according to the invention, can make it possible to obtain a determined thickness or particular performances.
  • different materials can be used depending on their physical properties, in particular in terms of hardness, chemical resistance or even stickiness.
  • the support of the sleeve according to the invention can be made of a compressible material to improve the quality of printing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Coating Apparatus (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)

Abstract

The invention concerns an endless sleeve comprising at least a substantially cylindrical support and whereof the outer surface is coated with at least a layer of bonding and permanently adhesive material. Said sleeve is designed to be mounted on a support cylinder, while its outer surface enables printing plates to be removably fixed by adhesion. The invention is applicable for flexographic printing.

Description

"Manchon comportant des moyens de fixation de plaques d'impression et procédé d'obtention" "Sleeve comprising means for fixing printing plates and process for obtaining it"
L'invention concerne le domaine de l'impression et plus particulièrement la fixation de plaques d'impression ou de clichés sur des cylindres support de machines d'impression ou sur des manchons prévus sur ces cylindres .The invention relates to the field of printing and more particularly the fixing of printing plates or plates on cylinders supporting printing machines or on sleeves provided on these cylinders.
On sait que de telles plaques d'impression sont notamment utilisées pour l'impression flexographique .It is known that such printing plates are used in particular for flexographic printing.
Ces plaques d'impression comprennent classiquement une couche de photopolymère, placée sur un support. Avant que la plaque d'impression ne soit utilisée, la couche de photopolymère est développée pour obtenir une couche avec des reliefs qui permettra de reproduire l'image à imprimer .These printing plates conventionally comprise a layer of photopolymer, placed on a support. Before the printing plate is used, the photopolymer layer is developed to obtain a layer with reliefs which will make it possible to reproduce the image to be printed.
Les plaques d'impression sont généralement réutilisées à plusieurs reprises. Il est donc souhaitable de disposer de moyens de fixation maintenant efficacement les plaques lors de l'impression, tout en permettant leur enlèvement du cylindre porte-plaques ou du manchon fixé sur le cylindre, en vue d'une réutilisation ultérieure.The printing plates are generally reused several times. It is therefore desirable to have fixing means which effectively maintain the plates during printing, while allowing their removal from the plate cylinder or from the sleeve fixed on the cylinder, for subsequent reuse.
Des moyens connus pour la fixation des plaques d'impression consistent en des bandes d'adhésif double- face.Known means for fixing the printing plates consist of strips of double-sided adhesive.
Chaque bande d'adhésif est fixée par un côté adhésif, directement sur le cylindre porte-plaques ou sur un manchon fixé sur le cylindre, tandis qu'une ou plusieurs plaques d'impression sont fixées de l'autre côté de la bande.Each strip of adhesive is fixed by an adhesive side, directly on the plate cylinder or on a sleeve fixed on the cylinder, while one or more printing plates are fixed on the other side of the strip.
Ces adhésifs double-face présentent de nombreux inconvénients .These double-sided adhesives have many disadvantages.
Tout d'abord, il arrive qu'une partie de l'adhésif reste fixée à la plaque d'impression après que celle-ci a été retirée du cylindre ou du manchon fixé sur le cylindre. Il est alors nécessaire de nettoyer la plaque pour retirer l'adhésif résiduel, avant toute nouvelle utilisation de la plaque.First, it happens that part of the adhesive remains attached to the printing plate after it has been removed from the cylinder or from the sleeve fixed to the cylinder. It is then necessary to clean the plate to remove the residual adhesive, before each new use of the plate.
Par ailleurs, l'utilisation d'adhésif double-face se révèle coûteuse, compte tenu du prix de l'adhésif lui- même et des opérations qu'elle nécessite.Furthermore, the use of double-sided adhesive proves to be expensive, taking into account the price of the adhesive itself and the operations which it requires.
L'invention a pour objet de pallier ces inconvénients en proposant un manchon, destiné à être fixé sur un cylindre et comportant des moyens de fixation de plaques d'impression qui sont d'une fabrication simple et d'un faible prix de revient.The object of the invention is to overcome these drawbacks by proposing a sleeve, intended to be fixed to a cylinder and comprising means for fixing printing plates which are of simple manufacture and of low cost price.
L'invention concerne ainsi un manchon sans fin, comportant au moins un support de forme sensiblement cylindrique et dont la surface extérieure est recouverte d'au moins une couche d'un matériau collant et adhérent de façon permanente, ledit manchon étant destiné à être monté sur un cylindre support, tandis que sa surface extérieure permet la fixation amovible par adhérence de plaques d'impression.The invention thus relates to an endless sleeve, comprising at least one support of substantially cylindrical shape and the outer surface of which is covered with at least one layer of a sticky and permanently adherent material, said sleeve being intended to be mounted. on a support cylinder, while its outer surface allows removable fixing by adhesion of printing plates.
Dans l'ensemble de la description, on comprend par matériau collant et adhérent de façon permanente, un matériau dont les propriétés de collage et d'adhérence durent dans le temps, typiquement pendant une durée d'au moins 8 à 12 mois.Throughout the description, the term “sticky and permanently adherent material” is understood to mean a material whose bonding and adhesion properties last over time, typically for a period of at least 8 to 12 months.
Ainsi, le manchon selon l'invention, après son montage sur un cylindre support ou porte-plaques, permet d'éviter l'utilisation d'adhésif double-face. En effet, toute la surface extérieure de l'ensemble, constitué par le cylindre et le manchon, est collante et adhérente de façon permanente, ce qui permet d'y fixer directement des plaques d'impression. Aucune opération préalable de positionnement et de fixation d'un adhésif double-face n'est donc nécessaire.Thus, the sleeve according to the invention, after its mounting on a support cylinder or plate holder, avoids the use of double-sided adhesive. In fact, the entire outer surface of the assembly, consisting of the cylinder and the sleeve, is permanently sticky and adherent, which allows printing plates to be fixed directly to it. No prior positioning and fixing operation of a double-sided adhesive is therefore necessary.
Par ailleurs, après leur utilisation, les plaques d'impression peuvent être facilement retirées de la surface extérieure du manchon en vue d'une utilisation ultérieure . Ce manchon est d'un prix de revient très inférieur à celui des adhésifs double-face, grâce à des procédés de fabrication spécifiques.Furthermore, after use, the printing plates can be easily removed from the outer surface of the sleeve for later use. This sleeve has a much lower cost price than double-sided adhesives, thanks to specific manufacturing processes.
On peut encore noter que la continuité du manchon selon l'invention permet d'éliminer les inconvénients liés à l'utilisation de moyens de fixation comportant des joints. En effet, la présence de joints entraîne classiquement des défauts d'impression et donc des pertes de papier. De façon avantageuse, le matériau collant et adhérent de façon permanente est à base de polymères .It may also be noted that the continuity of the sleeve according to the invention makes it possible to eliminate the drawbacks linked to the use of fixing means comprising seals. Indeed, the presence of seals conventionally causes printing defects and therefore loss of paper. Advantageously, the sticky and permanently adherent material is based on polymers.
De façon préférée, ce matériau est un photopolymère réticulé .Preferably, this material is a crosslinked photopolymer.
L'épaisseur totale des matériaux collants et adhérents de façon permanente est, de préférence, comprise entre 10 et 500 μm (microns) .The total thickness of the sticky and permanently adherent materials is preferably between 10 and 500 μm (microns).
Par ailleurs, le support du manchon selon l'invention est avantageusement compressible.Furthermore, the support of the sleeve according to the invention is advantageously compressible.
L'invention concerne également un procédé d'obtention d'un manchon tel que décrit précédemment, ce procédé consistant à : placer un support de forme sensiblement cylindrique dans une machine d'enduction annulaire et àThe invention also relates to a method for obtaining a sleeve as described above, this method consisting in: placing a support of substantially cylindrical shape in an annular coating machine and in
- mettre en action ladite machine pour obtenir le dépôt d'au moins une couche d'un matériau collant et adhérent de façon permanente .- Putting said machine into action to obtain the deposition of at least one layer of a sticky and permanently adherent material.
De préférence, le support est disposé verticalement dans ladite machine, celle-ci comportant un récipient annulaire contenant ledit matériau et placé autour dudit support, le support et le récipient étant animés d'un mouvement relatif de translation verticale pour réaliser le dépôt de ladite couche sur le support .Preferably, the support is arranged vertically in said machine, the latter comprising an annular container containing said material and placed around said support, the support and the container being driven in a relative movement of vertical translation in order to deposit said layer. on the support.
Par ailleurs, lorsque le matériau déposé est du type polymérique, et notamment un photopolymère, le procédé consiste également à réaliser une reticulation dudit matériau. L'invention sera mieux comprise et d'autres buts, avantages et caractéristiques de celle-ci apparaîtront plus clairement à la lecture de la description qui suit et qui est faite au regard du dessin annexé, sur lequel - la Figure 1 est une vue en coupe d'une machine à enduction annulaire et verticale etFurthermore, when the material deposited is of the polymeric type, and in particular a photopolymer, the method also consists in carrying out crosslinking of said material. The invention will be better understood and other objects, advantages and characteristics thereof will appear more clearly on reading the description which follows and which is given with reference to the appended drawing, in which - Figure 1 is a view in section of an annular and vertical coating machine and
- la Figure 2 est une vue schématique d'une machine d'application du matériau par projection.- Figure 2 is a schematic view of a machine for applying the material by spraying.
La référence 1 désigne des moyens pour tenir un support 2 sensiblement cylindrique, dans une position verticale. Ces moyens 1 peuvent notamment consister en un cylindre .The reference 1 designates means for holding a substantially cylindrical support 2 in a vertical position. These means 1 may in particular consist of a cylinder.
Le support 2 est notamment réalisé en un matériau composite comme une matrice en résine époxy renforcée par des fibres.The support 2 is in particular made of a composite material such as an epoxy resin matrix reinforced with fibers.
La machine comporte également un réservoir annulaire 3 qui contient un matériau collant et adhérent de façon permanente.The machine also includes an annular reservoir 3 which contains a sticky and permanently adherent material.
Dans l'exemple illustré, le support 2 est fixe et la machine comporte des moyens 5 associés au récipient 3 pour le déplacer verticalement ou encore selon l'axe 20 du support 2.In the example illustrated, the support 2 is fixed and the machine comprises means 5 associated with the container 3 for moving it vertically or even along the axis 20 of the support 2.
Bien entendu, on pourrait également prévoir une machine avec un récipient annulaire 3 fixe et des moyens pour déplacer le support 2 selon son axe 20.Of course, a machine could also be provided with a fixed annular container 3 and means for moving the support 2 along its axis 20.
Les moyens de translation du récipient annulaire 3 sont par exemple constitués par deux écrous 6,7 fixés au récipient 3, selon des positions diamétralement opposées, chacun de ces écrous étant conçu pour coopérer avec une tige filetée 8,9. Par ailleurs, des moyens appropriés 10, 11 sont prévus pour entraîner chacune de ces tiges filetées 8, 9.The means of translation of the annular container 3 are for example constituted by two nuts 6,7 fixed to the container 3, in diametrically opposite positions, each of these nuts being designed to cooperate with a threaded rod 8,9. Furthermore, suitable means 10, 11 are provided for driving each of these threaded rods 8, 9.
L' enduction du support 2 est réalisée en commandant les moyens d'entraînement 10, 11 des tiges filetées 8, 9, de telle sorte que le récipient annulaire 3 se déplace selon l'axe 20, par exemple du haut vers le bas. Le récipient annulaire 3 est conçu pour déposer, sur le support 2, une couche du matériau collant et adhérent qu'il contient, dont l'épaisseur est comprise entre 10 et 250 μm (microns) . Il est bien sûr possible de répéter l'opération pour augmenter l'épaisseur totale des matériaux collants sur le support 2.The coating of the support 2 is carried out by controlling the drive means 10, 11 of the threaded rods 8, 9, so that the annular container 3 moves along the axis 20, for example from top to bottom. The annular container 3 is designed to deposit, on the support 2, a layer of the sticky and adherent material which it contains, the thickness of which is between 10 and 250 μm (microns). It is of course possible to repeat the operation to increase the total thickness of the sticky materials on the support 2.
Ce matériau est avantageusement à base de polymères .This material is advantageously based on polymers.
Il convient donc de le réticuler. C'est pourquoi, dans l'exemple illustré sur la figure, des moyens 12 sont prévus pour assurer la reticulation du polymère déposé sur le support 2.It should therefore be cross-linked. This is why, in the example illustrated in the figure, means 12 are provided for crosslinking the polymer deposited on the support 2.
A titre d'exemple, on peut citer les matériaux suivants : polymères à base de nitrile carboxylé, polyisoprène, résine acrylique, silicone, polychloroprène, éthylène vinyl acétate, butyl et polyuréthane .By way of example, mention may be made of the following materials: polymers based on carboxylated nitrile, polyisoprene, acrylic resin, silicone, polychloroprene, ethylene vinyl acetate, butyl and polyurethane.
La reticulation peut être obtenue par différents moyens, notamment par exposition à la lumière UV dans le cas de photopolymères, ou encore par application de chaleur.Cross-linking can be obtained by various means, in particular by exposure to UV light in the case of photopolymers, or also by application of heat.
Après reticulation, ces matériaux présentent un caractère collant, permettant la fixation amovible de plaques d'impression, qui est caractérisé par un "collant" ou "tack" exprimé en g/cm et mesuré par exemple sur un appareil de marque MONSANTO et de type "TELTAK" avec des modes opératoires connus en soi . Les valeurs de "collant" correspondant à des adhésifs conformes à 1 ' invention sont typiquement comprises dans une fourchette d'environ 50 à 500 g/cm.After crosslinking, these materials have a sticky nature, allowing the removable fixing of printing plates, which is characterized by a "sticky" or "tack" expressed in g / cm and measured for example on a device of the MONSANTO brand and of the type "TELTAK" with procedures known per se. The "sticky" values corresponding to adhesives according to the invention are typically in the range of about 50 to 500 g / cm.
Dans cette gamme de valeurs, une plaque d'impression, préalablement fixée sur un support, peut en être retirée sans qu'une partie de la couche d'adhésif reste fixée sur la plaque. Bien entendu, la reticulation du polymère n'est pas obligatoirement réalisée dans la machine d'induction elle-même, mais ce mode de mise en oeuvre présente des avantages évidents.Within this range of values, a printing plate, previously fixed on a support, can be removed therefrom without part of the adhesive layer remaining fixed on the plate. Of course, the crosslinking of the polymer is not necessarily carried out in the induction machine itself, but this mode of implementation has obvious advantages.
On peut encore noter que le procédé d' enduction annulaire permet l'application de couches de matériau dont l'épaisseur est relativement fine.It may also be noted that the annular coating process allows the application of layers of material whose thickness is relatively thin.
Le matériau collant et adhérent de façon permanente qui est déposé sur le support 2 est d'un coût relativement élevé. Ainsi, la possibilité d'appliquer des couches de matériau relativement fines permet de réduire le prix de revient du manchon selon l'invention, par rapport aux moyens de fixation connus et notamment les adhésifs double-face.The sticky and permanently adherent material which is deposited on the support 2 is relatively expensive. Thus, the possibility of applying relatively thin layers of material makes it possible to reduce the cost price of the sleeve according to the invention, compared with known fixing means and in particular double-sided adhesives.
Ceci est particulièrement vrai pour les matériaux du type photopolymère qui sont d'un coût de revient élevé.This is particularly true for materials of the photopolymer type which are of high cost price.
Bien sûr, l'invention n'est pas limitée au mode de mis en oeuvre qui vient d'être décrit. Le dépôt du matériau collant et adhérent de façon permanente pourrait également être réalisé par projection, comme en peinture, ou par tout autre moyen approprié. La Figure 2 illustre schématiquement une installation de projection du matériau collant et adhérant sur le cylindre de support Z susceptible d'être entraîné en rotation, comme cela est indiqué par des flèches. Le matériau est projeté sur la surface extérieure du cylindre 2 par une tête de projection 14 déplaçable le long d'un dispositif de guidage 15 s 'étendant parallèlement à l'axe du support, sous l'effet d'un dispositif de commande 16. Un tel dispositif est connu en soi et n'a pas besoin d'être expliqué plus en détail.Of course, the invention is not limited to the mode of implementation which has just been described. The deposition of the sticky and adherent material permanently could also be carried out by projection, as in painting, or by any other appropriate means. FIG. 2 schematically illustrates an installation for projecting the sticky material and adhering to the support cylinder Z capable of being driven in rotation, as indicated by arrows. The material is projected onto the exterior surface of the cylinder 2 by a projection head 14 movable along a guide device 15 extending parallel to the axis of the support, under the effect of a control device 16. Such a device is known per se and does not need to be explained in more detail.
Les procédés qui viennent d'être décrits permettent donc d'obtenir un manchon comportant un support de forme sensiblement cylindrique et dont la surface extérieure est recouverte d'un matériau collant et adhérent de façon permanente . Des plaques d'impression peuvent alors être fixées en un emplacement quelconque de sa surface extérieure et ceci, directement.The methods which have just been described therefore make it possible to obtain a sleeve comprising a support of substantially cylindrical shape and the outer surface of which is covered with a sticky material and which adheres permanently. Printing plates can then be fixed at any location on its outer surface and this, directly.
Il n'est donc plus nécessaire de procéder à des opérations préalables de positionnement de moyens de fixation, comme des bandes d'adhésif double-face.It is therefore no longer necessary to carry out prior operations for positioning fastening means, such as strips of double-sided adhesive.
Ceci réduit donc de façon considérable le temps de mise en oeuvre et le coût de la main d'oeuvre.This therefore considerably reduces the implementation time and the cost of labor.
Par ailleurs, lorsqu'il est nécessaire de retirer les plaques d'impression, ce retrait s'effectue sans qu'une partie de l'adhésif reste fixée aux plaques d'impression. Il n'est donc pas nécessaire de procéder à une opération ultérieure de nettoyage des plaques d'impression, en vue de leur réutilisation. Par ailleurs, la surface extérieure du manchon n'est pas détériorée, et d'autres plaques d'impression pourront ultérieurement y être fixées de façon amovible.Furthermore, when it is necessary to remove the printing plates, this removal is carried out without part of the adhesive remaining attached to the printing plates. It is therefore not necessary to carry out a subsequent operation of cleaning the printing plates, with a view to their reuse. Furthermore, the outer surface of the sleeve is not deteriorated, and other printing plates may subsequently be fixed therein in a removable manner.
Dans les exemples qui ont été décrits précédemment, le manchon ne comporte qu'une couche d'un matériau collant et adhérent de façon permanente. L'invention n'est pas limitée à cet exemple et en particulier, le manchon peut comporter différentes couches, appliquées successivement, réalisées ou non avec le même matériau collant et adhérent de façon permanente. L'application de plusieurs couches successives sur le support, lors de la fabrication du manchon selon l'invention, peut permettre d'obtenir une épaisseur déterminée ou des performances particulières. A cet égard, des matériaux différents peuvent être utilisés en fonction de leurs propriétés physiques, notamment en termes de dureté, de résistance chimique ou encore de caractère collant.In the examples which have been described previously, the sleeve only comprises a layer of a sticky and permanently adherent material. The invention is not limited to this example and in particular, the sleeve may comprise different layers, applied successively, produced or not with the same sticky material and permanently adhered. The application of several successive layers on the support, during the manufacture of the sleeve according to the invention, can make it possible to obtain a determined thickness or particular performances. In this regard, different materials can be used depending on their physical properties, in particular in terms of hardness, chemical resistance or even stickiness.
Par ailleurs, le support du manchon selon l'invention peut être réalisé en une matière compressible pour améliorer la qualité de l'impression.Furthermore, the support of the sleeve according to the invention can be made of a compressible material to improve the quality of printing.
Enfin, dans l'ensemble de la description, seules des plaques d'impression ont été mentionnées, mais le manchon selon l'invention pourrait également servir à la fixation de plaques d'héliogravure, de typographie, de plaques offset ou de films divers.Finally, throughout the description, only printing plates have been mentioned, but the sleeve according to the invention could also be used for fixing rotogravure plates, letterpress, offset plates or various films.
Les signes de référence insérés après les caractéristiques techniques figurant dans les revendications ont pour seul but de faciliter la compréhension de ces dernières et ne sauraient en limiter la portée. The reference signs inserted after the technical characteristics appearing in the claims have the sole purpose of facilitating the understanding of the latter and should not limit their scope.

Claims

REVENDICATIONS
1. Manchon sans fin, comportant au moins un support (2) de forme sensiblement cylindrique et dont la surface extérieure est recouverte d'au moins une couche d'un matériau collant et adhérent de façon permanente et réalisée sous forme d'une couche sans fin, ledit manchon étant destiné à être monté sur un cylindre support, tandis que sa surface extérieure permet la fixation amovible par adhérence de plaques d'impression.1. Endless sleeve, comprising at least one support (2) of substantially cylindrical shape and the outer surface of which is covered with at least one layer of a sticky and permanently adherent material and produced in the form of a layer without end, said sleeve being intended to be mounted on a support cylinder, while its outer surface allows removable fixing by adhesion of printing plates.
2. Manchon selon la revendication 1, dans lequel ledit matériau collant et adhérent de façon permanente est a base de polymères .2. Sleeve according to claim 1, wherein said sticky and permanently adherent material is based on polymers.
3. Manchon selon la revendication 2, dans lequel le matériau est un photopolymère réticulé.3. The sleeve of claim 2, wherein the material is a crosslinked photopolymer.
4. Manchon selon l'une des revendications 1 à 3, dans lequel l'épaisseur totale des matériaus collants et adhérents est comprise entre 10 et 500 μm (microns)4. Sleeve according to one of claims 1 to 3, in which the total thickness of the sticky and adherent materials is between 10 and 500 μm (microns)
5. Manchon selon l'une des revendications 1 à 4 dont le support est compressible.5. Sleeve according to one of claims 1 to 4 whose support is compressible.
6. Procédé d'obtention d'un manchon selon l'une des revendications 1 à 5, consistant à réaliser la couche de matériau collant et adhérent de façon permanente par application sur la surface extérieure du support, du matériau collant et adhérent.6. Method for obtaining a sleeve according to one of claims 1 to 5, consisting in producing the layer of sticky and adherent material permanently by applying to the outer surface of the support, the sticky and adherent material.
7. Procédé selon la revendication 6, consistant à : placer un support (2) de forme sensiblement cylindrique dans une machine d' enduction annulaire et à7. The method of claim 6, comprising: placing a support (2) of substantially cylindrical shape in an annular coating machine and
- mettre en action ladite machine pour obtenir le dépôt d'au moins une couche d'un matériau collant et adhérent de façon permanente .- Putting said machine into action to obtain the deposition of at least one layer of a sticky and permanently adherent material.
8. Procédé selon la revendication 7, dans lequel le support (2) est disposé verticalement, la machine comprenant un récipient (3) annulaire, contenant ledit matériau et placé autour du support, ledit support et ledit récipient étant animés d'un mouvement relatif de translation pour réaliser le dépôt de ladite couche sur le support (2) .8. The method of claim 7, wherein the support (2) is arranged vertically, the machine comprising a container (3) annular, containing said material and placed around the support, said support and said container being moved in relative movement. of translation to deposit said layer on the support (2).
9. Procédé selon la revendication 7 ou 8 , dans lequel le matériau déposé sur le support est du type polymérique, et notamment un photopolymère, le procédé consistant également à réaliser une reticulation dudit matériau.9. The method of claim 7 or 8, wherein the material deposited on the support is of the polymeric type, and in particular a photopolymer, the method also consisting in carrying out crosslinking of said material.
10. Procédé selon la revendication 6, dans lequel la couche du matériau collant et adhérent est obtenue par projection du matériau collant et adhérent sur la face extérieure du support . 10. The method of claim 6, wherein the layer of sticky and adherent material is obtained by spraying the sticky and adherent material on the outer face of the support.
EP00990079A 1999-12-20 2000-12-20 Sleeve comprising means for fixing printing plates and method for making same Expired - Lifetime EP1240021B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9916072A FR2802465B1 (en) 1999-12-20 1999-12-20 SLEEVE COMPRISING MEANS FOR FIXING PRINTING PLATES AND PROCESS FOR OBTAINING SAME
FR9916072 1999-12-20
PCT/FR2000/003611 WO2001045951A1 (en) 1999-12-20 2000-12-20 Sleeve comprising means for fixing printing plates and method for making same

Publications (2)

Publication Number Publication Date
EP1240021A1 true EP1240021A1 (en) 2002-09-18
EP1240021B1 EP1240021B1 (en) 2003-10-29

Family

ID=9553485

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00990079A Expired - Lifetime EP1240021B1 (en) 1999-12-20 2000-12-20 Sleeve comprising means for fixing printing plates and method for making same

Country Status (7)

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EP (1) EP1240021B1 (en)
AT (1) ATE252982T1 (en)
AU (1) AU2688301A (en)
DE (1) DE60006285T2 (en)
ES (1) ES2210029T3 (en)
FR (1) FR2802465B1 (en)
WO (1) WO2001045951A1 (en)

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CN114174069A (en) * 2019-08-30 2022-03-11 德莎欧洲股份公司 Tubular adhesive plate attachment layer, method for manufacturing same

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US6954291B2 (en) 2001-09-04 2005-10-11 Esko-Graphics A/S Method, apparatus, and computer program for reducing plate material waste in flexography plate making
US6823793B2 (en) 2003-01-06 2004-11-30 Esko Graphics, Nv Method and apparatus for mounting flexographic plate segments

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FR2763888B1 (en) * 1997-05-28 1999-07-16 Rollin Sa IMPROVED SLEEVE FOR A CYLINDER OF A PRINTING MACHINE OR THE LIKE AND METHOD FOR FITTING THEREOF
IT1293502B1 (en) * 1997-07-29 1999-03-01 Gabriella Cacchi PROCEDURE FOR ASSEMBLING CLICHE 'ON SLEEVES AND RELATIVE ASSEMBLY OF SLEEVES ON ROLLS OF FLEXOGRAPHIC PRINTING MACHINES

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Publication number Priority date Publication date Assignee Title
CN114174069A (en) * 2019-08-30 2022-03-11 德莎欧洲股份公司 Tubular adhesive plate attachment layer, method for manufacturing same
CN114174069B (en) * 2019-08-30 2023-05-23 德莎欧洲股份公司 Tubular adhesive printing plate attachment layer and method for manufacturing same
US11951732B2 (en) 2019-08-30 2024-04-09 Tesa Se Adhesive printing form attachment layer in tube shape, method for its manufacture, and method of printing using the same

Also Published As

Publication number Publication date
EP1240021B1 (en) 2003-10-29
ES2210029T3 (en) 2004-07-01
DE60006285T2 (en) 2004-07-22
FR2802465A1 (en) 2001-06-22
WO2001045951A1 (en) 2001-06-28
FR2802465B1 (en) 2002-10-25
DE60006285D1 (en) 2003-12-04
AU2688301A (en) 2001-07-03
ATE252982T1 (en) 2003-11-15

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