EP1208996B1 - Appareil pour la production de blanchets d'impression tubulaires - Google Patents

Appareil pour la production de blanchets d'impression tubulaires Download PDF

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Publication number
EP1208996B1
EP1208996B1 EP01126529A EP01126529A EP1208996B1 EP 1208996 B1 EP1208996 B1 EP 1208996B1 EP 01126529 A EP01126529 A EP 01126529A EP 01126529 A EP01126529 A EP 01126529A EP 1208996 B1 EP1208996 B1 EP 1208996B1
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EP
European Patent Office
Prior art keywords
layer
sleeve
printing
continuous casting
blanket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01126529A
Other languages
German (de)
English (en)
Other versions
EP1208996A3 (fr
EP1208996A2 (fr
Inventor
Roland Thomas Palmatier
James Brian Vrotacoe
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.)
Goss International Americas LLC
Original Assignee
Goss International Americas LLC
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Filing date
Publication date
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Publication of EP1208996A2 publication Critical patent/EP1208996A2/fr
Publication of EP1208996A3 publication Critical patent/EP1208996A3/fr
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Publication of EP1208996B1 publication Critical patent/EP1208996B1/fr
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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
    • B41N10/00—Blankets or like coverings; Coverings for wipers for intaglio printing
    • B41N10/02—Blanket structure
    • 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
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/04—Intermediate layers
    • 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
    • B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings
    • B41N2210/02—Top layers
    • 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
    • B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings
    • B41N2210/04—Intermediate layers
    • 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
    • B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings
    • B41N2210/14—Location or type of the layers in multi-layer blankets or like coverings characterised by macromolecular organic compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/909—Resilient layer, e.g. printer's blanket
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49544—Roller making
    • Y10T29/4956—Fabricating and shaping roller work contacting surface element
    • Y10T29/49563—Fabricating and shaping roller work contacting surface element with coating or casting about a core

Definitions

  • the present invention relates to an apparatus for producing a sleeve-shaped blanket according to the preamble of claim 1. Furthermore, the present invention relates to a method for producing a sleeve-shaped printing blanket according to the preamble of claim 14. Furthermore, the present invention relates to a sleeve-shaped printing blanket for offset printing according to the preamble of claim 24 and according to the preamble of claim 31.
  • blankets or such methods are known from EP388 740.
  • a web offset printing press typically includes a plate cylinder, a blanket cylinder, and a printing cylinder stored for rotation in the machine. The plate cylinder carries a printing plate with an inelastic surface which defines an image to be printed.
  • the blanket cylinder carries a blanket having an elastic surface that contacts the printing plate at a gap between the plate cylinder and the blanket cylinder.
  • a web to be printed moves through a gap between the blanket cylinder and the printing cylinder. Paint is applied to the surface of the printing plate on the plate cylinder.
  • a colored image is picked up by the blanket at the nip between the blanket cylinder and the plate cylinder and transferred to the web by the blanket at the nip between the blanket cylinder and the impression cylinder.
  • the impression cylinder may be another blanket cylinder for printing the opposite side of the web.
  • a conventional blanket is made as a flat cover.
  • a blanket of this type is mounted on a blanket cylinder by wrapping the blanket around the blanket cylinder and securing the opposite ends of the blanket to the blanket cylinder in an axially extending channel in the blanket cylinder.
  • the adjacent opposite ends of the coating define a channel that extends axially along the blanket. The channel moves with each rotation of the blanket cylinder through the gap between the blanket cylinder and the plate cylinder and also through the gap between the blanket cylinder and the impression cylinder.
  • the Applicant of the present invention has developed neckless, sleeve-shaped blankets. These channelless, sleeve-shaped blankets are described for example in US 5,768,990, US 5,553,541, US 5,440,981, US 5,429,048, US 5,323,702 and US 5,304,267.
  • US 5,304,267 deals with a method of making a canalless, sleeve-shaped blanket.
  • a preferred method for making a channelless, sleeve-shaped blanket is described as "coating a compressible thread with a mixture of rubber solution and microspheres and wrapping the coated thread in a helix around the cylindrical sleeve” to form a compressible layer.
  • a channelless, sleeve-shaped blanket having a circumferentially inextensible backsheet comprising a continuous piece of plastic film which spirally extends through the elastomeric material of an inextensible layer and around a compressible layer.
  • the plastic film preferably has a width approximately equal to the length of the sleeve-shaped blanket and a thickness of only 0.00254 cm (0.001 inches), so that the narrow seam defined by the 0.00254 cm (0.001 inch) wide edge of the the top layer of the same does not interrupt the smooth, continuous cylindrical contour of an overlying print layer.
  • DE 197 20 549 A1 describes a method for producing a cylinder carrier by winding a continuous strip on the surface of a carrier mandrel.
  • the strip is unwound from a spool which is mounted so that it can rotate so that the winding angle of the strip can self-align.
  • the strip tension is maintained during the winding process.
  • a pretreatment and coating of the strip with an adhesive takes place between the unwinding and winding of the strip.
  • the pretreatment stations are mounted on a support wall which is installed so that it can rotate in relation to the cylinder surface.
  • the cylindrical carrier sleeve is coated with an integrated layer of plastic material.
  • the carrier sleeve is shown as a fixed length sleeve.
  • No. 6,257,140 describes channelless, sleeve-shaped blankets which are produced in flow production and cut to the desired length.
  • the sleeve and print layer are formed "continuously" by the sleeve forming station continuing to form an additional portion of the sleeve while the print layer forming station applies the pressure layer to the previously formed portion of the sleeve.
  • winding tapes or crosshead extruder are used.
  • the invention is therefore based on the object to provide a channelless, sleeve-shaped blanket.
  • the blanket can have different layers.
  • the present invention provides a method of casting ribbons for forming ribbons to form different layers of a sleeve-shaped blanket.
  • Strip casting as defined herein, may mean applying a liquid material from a stationary source to a rotating and advancing substrate, or applying a liquid from a circulating source to a moving substrate , In this way, a continuous band of liquid material can be applied to the substrate.
  • liquid material may be any flowable material, including a semi-solid material.
  • the liquid material is preferably a polymer which does not require a separate curing step, ie a self-curing material. Because the liquid is out can be dispensed to a single mouthpiece of the source, the application of the material for forming the blanket is easier than in a crosshead extruder, in which material is pressed outwards so that the entire circumference of the substrate is touched. In addition, liquid materials are easier to use than strip materials.
  • a device according to the invention for producing a sleeve-shaped printing blanket with a sleeve conveying device for moving a carrier sleeve is characterized by at least one strip casting device which applies a flowable material, wherein the applied flowable material forms a layer arranged above the carrier sleeve.
  • the present invention provides a more cost effective and faster manufacture of blankets.
  • the cost of sleeve blankets is a large factor in the total cost of ownership of a printing machine that uses sleeve-shaped blankets.
  • the at least one strip casting device preferably comprises a strip casting device for producing a compressible layer having a first flowable material supply region and a compressibility generating device, which may be, for example, a compressible microsphere delivery region or a blowing or foaming device.
  • a compressibility generating device which may be, for example, a compressible microsphere delivery region or a blowing or foaming device.
  • the foam structure or microspheres can provide the compressibility desired for the compressible layer.
  • the at least one strip casting apparatus preferably further comprises a strip casting apparatus for producing a reinforcing layer and a strip casting apparatus for producing a printing layer.
  • Strip casting machines preferably each have a single nozzle through which the flowable material flows onto the respective substrate.
  • the belt casting devices are stationary, while the sleeve conveying device is a moving and rotating device is on which an endless support sleeve is formed, for example by using a metal strip.
  • the belt casting apparatuses may rotate in a circular motion about the substrate while the sleeve advancing means may continuously advance a sleeve substrate past the belt casting apparatuses.
  • the inventive method for producing a sleeve-shaped blanket, wherein a carrier sleeve is conveyed in a first direction is characterized by tape casting a compressible layer, a reinforcing layer and / or a pressure layer around the carrier sleeve, while the carrier sleeve moves on.
  • the method further comprises rotating the carrier sleeve during the step of advancing.
  • the step of strip casting preferably comprises strip casting a compressible layer, a reinforcing layer and / or a printing layer.
  • the tape casting step may include rotating a tape casting apparatus about the carrier sleeve as the carrier sleeve advances.
  • rubber could be used for strip casting, it is usually cured thereafter in a separate step. It is extremely advantageous to use a polymer which does not require a separate curing step in the tape casting process, such polymer being defined herein as a "self-curing polymer". It is most advantageous when urethane is used to form blankets of the invention. Urethane has the advantage that it flows well during strip casting and hardens quickly. However, the self-curing polymer could also be a self-vulcanizing rubber, such as room temperature curing rubber.
  • the step of strip casting therefore preferably comprises tap casting urethane to form the at least one layer.
  • the blankets are continuously made to have an indeterminate length.
  • the method also includes a step of cutting the sleeve to the desired length to form the blanket.
  • the present invention also provides a sleeve-shaped blanket having a carrier sleeve, a compressible layer and a printing layer, wherein the compressible layer and / or the printing layer are made of urethane.
  • both the compressible layer and the printing layer are made of urethane, and a reinforcing layer is disposed between the compressible layer and the printing layer.
  • the reinforcing layer is preferably also made of urethane.
  • the compressible layer is made from urethane foam which is formed by blowing carbon dioxide, air or other propellant into the urethane before it exits the die of a belt caster.
  • compressible microspheres can also be embedded in the urethane to obtain compressibility.
  • the reinforcing layer is preferably made of urethane having high hardness test values of greater than 80 Shore A, or better, about 100 Shore A.
  • the reinforcing layer is preferably thinner than the compressible layer.
  • the print layer is preferably urethane having hardness test values of less than 80 Shore A, with values of about 60 Shore A being most preferred.
  • the layers are preferably made by a tape casting process that produces a helically wound form that is more uniform, channelless, to form Layers together.
  • the carrier sleeve is preferably made of steel, preferably formed in a continuous process by a belt.
  • the term "continuous process” indicates that the process produces an endless, sleeve-shaped blanket of indefinite axial length.
  • Apparatus 1 comprises a turning and further conveying device 11 for moving the printing blanket 100 continuously from right to left in Fig. 1.
  • the device 11 has a driving section 300, the movable bars 201, 202, 203, 204, 205, 206, etc. continuously rotates and advances, as described below with reference to Fig. 2a and Fig. 2b.
  • a belt 32 which preferably consists of steel and may have two overlapping pieces of belt, is fed to the device 11, which unwinds the belt to form a carrier sleeve 33.
  • a first belt casting apparatus 20 associated with apparatus 1 for producing a compressible layer comprises a urethane feed 21 and a blowing device 22.
  • the urethane feed 21 may comprise a plurality of separate sections, for example an isocyanate section, a vulcanization section and a mixing chamber, as well further material sections.
  • Urethane from the supply 21 is foamed by the blower 22 in the mixing chamber and exits at a nozzle 23 with an end mouthpiece.
  • the foamed urethane is thus applied to the carrier sleeve 33 to form a compressible layer 34 which is shown for illustrative purposes with the applied liquid ribbons in the form of a spiral. In effect, the applied liquid ribbons flow together and harden to form a seamless, channelless compressible layer 34.
  • a squeegee or scraper 55 may contact the urethane layer 34, and a grinder 56 may flatten the layer 34 to reduce imperfections, such as curls, in the layer 34.
  • a reinforcing layer 42 is applied in a section 130 of a third station by a second strip casting device 30 of the device 1.
  • the strip casting apparatus 30 may include a urethane feed 31 and a nozzle 36 for applying the urethane.
  • the hardness test value of the urethane is preferably about 100 Shore A.
  • the applied urethane coalesces and hardens to form a seamless and channelless reinforcement layer 42.
  • a doctor blade 57 and a grinder 58 may be used.
  • a third tape casting apparatus 40 which is similar to apparatus 30, creates a tape Urethane to form a pressure layer 45 over the reinforcing layer 42.
  • the urethane of the print layer preferably has a hardness test value of about 60 Shore A.
  • the applied print layer forms a seamless and channelless layer upon curing. If desired, a doctor blade 51 and a grinder 50 for correcting or reducing imperfections, such as corrugations, may be used in the printing layer 45.
  • the blanket continues to move in the direction of the arrows 5 until a desired length is reached and the blanket is cut, for example, by a rotating knife or rotary saw.
  • the sleeve is supported by rods 201-210 (see Figs. 2a and 2b) and may be supported in sections 120, 130 and 140 by bottom brackets.
  • FIG. 2a is a closer view of the operation of rods 201, 202, 203, 204, 205, 206, 207 rotating in direction 218.
  • the bars rotate, nine of the ten bars move in the same direction.
  • a bar reaches an axially most distant point in the direction 5, it is pushed back in the opposite direction 5, as shown for bar 201 in Fig. 2a.
  • This movement does not hinder the further advancement of the sleeve in direction 5, since the other nine rods continue to push the sleeve in direction 5.
  • the rod 201 has been pushed back, it begins to move in direction 5 again.
  • 2b shows a cross-sectional view of the bars 201, 202, 203, 204, 205, 206, 207, 208, 209 and 210 together with the drive device 300 which rotates and advances the bars, for example by bearings 260.
  • Fig. 3 shows an alternative embodiment in which the sleeve is transported by a transport device 400 through three circulating belt casting devices 220, 230, 240, which respectively apply the compressible layer, the reinforcing layer and the printing layer.
  • the layers may be made of similar materials to those shown in FIG Layers 34, 42 and 45 be.
  • FIG 4 shows a cross-sectional view of the printing blanket 100 with the sleeve 33 formed as a carrier sleeve, the compressible layer 34, the reinforcing layer 42 and the printing layer 45.
  • compressible layer refers to a polymeric material which has been made compressible by any of the known processes, including, for example, the use of microspheres, blowing agents, foaming agents or leaching. Examples of these materials are disclosed, for example, in US 5,768,990, US 5,553,541, US 5,440,981, US 5,429,048, US 5,323,702 and US 5,304,267.
  • print layer or elastomeric print material refers to a polymeric material, such as urethane, suitable for transferring an image from an offset printing plate or other print substrate to a roll or sheet material of a print quality meeting the requirements of each Pressure application corresponds.
  • the preferred embodiments of the offset blanket of the present invention prepared in the continuous process have been illustrated herein to include a compressible layer, a reinforcing layer and a print layer, it will be understood that in the event that this is required for a particular application is that the blanket may also include a base coat layer between the carrier sleeve 33 and the compressible layer 34.
  • the blanket of the invention preferably comprises a compressible, a reinforcing and a printing layer
  • a printing blanket according to the invention may comprise a carrier sleeve and a printing layer, or a carrier sleeve, a compressible layer and a printing layer.
  • a printing blanket according to the invention also comprises a plurality of compressible layers, could comprise multiple build-up layers or multiple reinforcement layers.
  • the reinforcing layer is preferably formed from urethane, the reinforcing layer may also be formed of wrapping fabric or plastic tape, string or thread around the workpiece. Also, cross-spray extruder heads or strips can be used to form some of the layers that are not made by tape casting.
  • the temperature of the flowable material can be controlled by the respective belt casting machines.
  • the nozzles may have mouthpieces whose shape may be changed to effect a change in tape dimensions.
  • the temperature and shape of the nozzles are such that a steady stream of flowable material flows onto the substrate. Flow rate, temperature, nozzle shape and rotational speed of the substrate can be varied to obtain the desired properties for the different layers, for example the thickness of the layer.

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  • Printing Plates And Materials Therefor (AREA)

Claims (32)

  1. Dispositif pour la production d'un blanchet d'impression tubulaire comprenant un système de réacheminement de tube (11) destiné à déplacer un tube de support (33),
    caractérisé par au moins un dispositif de coulée en bande (20), appliquant un matériau coulant, doté d'une buse (23) à travers laquelle s'écoule le matériau coulant, le matériau coulant appliqué formant une couche (34 ; 42 ; 45) disposée sur le tube de support (33),
    et un dispositif destiné à découper le blanchet d'impression tubulaire lorsque celui-ci atteint une longueur souhaitée.
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    le au moins un dispositif de coulée en bande (20) comporte un dispositif de coulée en bande destiné à produire une couche compressible (34), laquelle comprend une première zone d'amenée (21) pour un matériau coulant et un système générant une compressibilité.
  3. Dispositif selon la revendication 2,
    caractérisé en ce que
    le système générant la compressibilité est un moussant.
  4. Dispositif selon la revendication 2,
    caractérisé en ce que
    le au moins un dispositif de coulée en bande (40) comporte un dispositif de coulée en bande (40) destiné à produire une couche d'impression (45).
  5. Dispositif selon la revendication 2,
    caractérisé en ce que
    le au moins un dispositif de coulée en bande (20) comporte un dispositif de coulée en bande (30) destiné à produire une couche de renforcement (42) et un dispositif de coulée en bande (40) destiné à produire une couche d'impression (45).
  6. Dispositif selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le au moins un dispositif de coulée en bande (20) comprend une buse individuelle (23), à travers laquelle s'écoule le matériau coulant.
  7. Dispositif selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le au moins un dispositif de coulée en bande (20) est fixe, et le système de réacheminement de tube est un système de réacheminement et de rotation (11).
  8. Dispositif selon la revendication 7,
    caractérisé en ce que
    le tube de support (33) est un tube sans fin formé à partir d'une bande métallique.
  9. Dispositif selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que
    le au moins un dispositif de coulée en bande (20) peut être amené en rotation autour du tube (33).
  10. Dispositif selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le matériau coulant est un polymère autodurcissant.
  11. Dispositif selon la revendication 10,
    caractérisé en ce que
    le polymère autodurcissant est de l'uréthane.
  12. Dispositif selon la revendication 10,
    caractérisé en ce que
    le polymère autodurcissant est un caoutchouc durcissant à température ambiante.
  13. Dispositif selon l'une quelconque des revendications précédentes,
    lequel comporte en outre un poste de polissage (56), qui est disposé en aval du au moins un dispositif de coulée en bande (20).
  14. Procédé pour la production d'un blanchet d'impression tubulaire, un tube de support étant acheminé dans une première direction,
    caractérisé par
    la coulée en bande d'une couche compressible (34), d'une couche de renforcement (42) et/ou d'une couche d'impression (45) autour du tube de support (33) en utilisant au moins un dispositif de coulée en bande (20) appliquant un matériau coulant, doté d'une buse (23) à travers laquelle s'écoule le matériau coulant, tandis que le tube de support (33) continue de se déplacer, lequel comporte en outre le découpage du tube (33) à une longueur souhaitée.
  15. Procédé selon la revendication 14,
    lequel implique en outre une rotation du tube de support (33) pendant l'étape du réacheminement.
  16. Procédé selon la revendication 14,
    caractérisé en ce que
    l'étape de coulée en bande comporte une rotation d'un dispositif de coulée en bande (20) autour du tube (33), tandis que le tube de support (33) continue de se déplacer.
  17. Procédé selon l'une quelconque des revendications 14 à 16,
    caractérisé en ce que
    la couche compressible (34), la couche de renforcement (42) ou la couche d'impression (45) sont fabriquées en uréthane.
  18. Procédé selon la revendication 17, lequel comporte les étapes de procédé suivantes :
    caractérisé en ce que
    la couche compressible (34) en uréthane est appliquée sur le tube de support (33) ; et
    la couche d'impression (45) en uréthane est appliquée sur la couche compressible (34).
  19. Procédé selon la revendication 17 ou 18,
    lequel comporte en outre l'application de la couche de renforcement (42) en uréthane sur la couche compressible (34).
  20. Procédé selon l'une quelconque des revendications 14 à 16,
    caractérisé en ce que
    la couche compressible (34), la couche de renforcement (42) ou la couche d'impression (45) est fabriquée à partir d'un polymère autodurcissant.
  21. Procédé selon l'une quelconque des revendications 14 à 20,
    caractérisé en ce que
    le tube de support (33) est formé de façon continue.
  22. Procédé selon l'une quelconque des revendications 14 à 21,
    lequel comporte en outre le polissage de la couche compressible (34), de la couche de renforcement (42) et/ou de la couche d'impression (45).
  23. Procédé selon l'une quelconque des revendications 14 à 22,
    caractérisé en ce que
    le blanchet d'impression (100) est formé de façon continue.
  24. Blanchet d'impression tubulaire pour impression offset comprenant :
    un tube de support (33) ;
    une couche compressible (34) disposée sur le tube de support (33) ; et
    une couche d'impression (45) disposée sur la couche compressible (34),
    caractérisé en ce que
    la couche compressible (34) et/ou la couche d'impression (45) sont fabriquées en uréthane et
    en ce que le blanchet d'impression est fabriqué d'après le procédé selon l'une quelconque des revendications 14 à 23.
  25. Blanchet d'impression selon la revendication 24,
    lequel comporte en outre une couche de renforcement (42) disposée entre la couche compressible (34) et la couche d'impression (45).
  26. Blanchet d'impression selon la revendication 25,
    caractérisé en ce que
    la couche de renforcement (42) est fabriquée en uréthane.
  27. Blanchet d'impression selon la revendication 25 ou 26,
    caractérisé en ce que
    la couche de renforcement (42) comprend une valeur de dureté supérieure à 80 Shore A.
  28. Blanchet d'impression selon l'une quelconque des revendications 25 à 27,
    caractérisé en ce que
    la couche de renforcement (42) est plus mince que la couche compressible.
  29. Blanchet d'impression selon la revendication 28,
    caractérisé en ce que
    la couche d'impression (45) est fabriquée en uréthane avec une valeur de dureté inférieure à 80 Shore A.
  30. Blanchet d'impression selon l'une quelconque des revendications 24 à 29,
    caractérisé en ce que
    le tube de support est fabriqué à partir d'une bande (32) enroulée en forme de spirale.
  31. Blanchet d'impression tubulaire pour impression offset comprenant :
    un tube de support (33) ;
    une couche compressible (34) disposée sur le tube de support (33) ; et
    une couche d'impression (45) disposée sur la couche compressible (34),
    caractérisé en ce que
    la couche compressible (34) et/ou la couche d'impression (45) sont fabriquées à partir d'un polymère autodurcissant et
    le blanchet d'impression est fabriqué d'après un procédé selon la revendication 20.
  32. Blanchet d'impression selon la revendication 31,
    caractérisé en ce que
    le polymère autodurcissant est du caoutchouc durcissant à température ambiante.
EP01126529A 2000-11-20 2001-11-14 Appareil pour la production de blanchets d'impression tubulaires Expired - Lifetime EP1208996B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US716696 2000-11-20
US09/716,696 US6615721B1 (en) 2000-11-20 2000-11-20 Method and device for manufacturing a tubular lithographic printing blanket

Publications (3)

Publication Number Publication Date
EP1208996A2 EP1208996A2 (fr) 2002-05-29
EP1208996A3 EP1208996A3 (fr) 2004-07-28
EP1208996B1 true EP1208996B1 (fr) 2006-06-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01126529A Expired - Lifetime EP1208996B1 (fr) 2000-11-20 2001-11-14 Appareil pour la production de blanchets d'impression tubulaires

Country Status (7)

Country Link
US (1) US6615721B1 (fr)
EP (1) EP1208996B1 (fr)
JP (1) JP4593849B2 (fr)
CN (1) CN1355099A (fr)
AT (1) ATE331634T1 (fr)
DE (2) DE10155681A1 (fr)
HK (1) HK1047262A1 (fr)

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US20020119323A1 (en) * 2000-12-15 2002-08-29 Johann Weinert Compressible polyurethane layer and process for the preparation therof
US6779451B2 (en) 2001-06-27 2004-08-24 Heidelberger Druckmaschinen Ag Flexible tubular printing blanket
US6874232B2 (en) * 2003-05-21 2005-04-05 Stowe Woodward, Llc Method for forming cover for industrial roll
US10287731B2 (en) * 2005-11-08 2019-05-14 Stowe Woodward Licensco Llc Abrasion-resistant rubber roll cover with polyurethane coating
US20080034998A1 (en) * 2006-08-08 2008-02-14 Byers Joseph L Method of making a printing blanket or sleeve including cast polyurethane layers
US7976658B2 (en) * 2006-08-14 2011-07-12 Eastman Kodak Company Method of manufacturing a low cost intermediate transfer member
US20080038025A1 (en) * 2006-08-14 2008-02-14 Eastman Kodak Company Intermediate transfer member
US20080070042A1 (en) * 2006-09-20 2008-03-20 Day International, Inc. Printing blanket or sleeve including thermoplastic polyurethane or thermoplastic polyurethane alloy layers
FR2922154B1 (fr) * 2007-10-11 2010-01-15 Goss Int Montataire Sa Unite d'impression et son utilisation
US8409698B2 (en) * 2007-11-30 2013-04-02 Day International, Inc. Image transfer product including a thin printing surface layer
US20100307356A1 (en) * 2008-02-04 2010-12-09 Felice Rossini Bridged sleeve/cylinder and method of making same for web offset printing machines
US20090193991A1 (en) * 2008-02-04 2009-08-06 Felice Rossini Blanket sleeve and cylinder and method of making same
DE102017128894B4 (de) * 2017-12-05 2024-01-25 Tampoprint Ag Vorrichtung und Verfahren zur Herstellung eines Endlosbands als Druckzwischenträger
KR102124156B1 (ko) * 2018-08-21 2020-06-17 김순호 효율적인 옵셋인쇄기 블랭킷 제조 시스템 및 그 시스템으로 교체수리한 블랭킷을 갖는 옵셋인쇄장치

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DE3908999A1 (de) * 1989-03-18 1990-09-20 Roland Man Druckmasch Traegerhuelse, insbesondere fuer den offsetzylinder einer rotationsdruckmaschine
US5553541A (en) 1989-10-05 1996-09-10 Heidelberg Harris Inc Gapless tubular printing blanket
US5429048A (en) 1989-10-05 1995-07-04 Gaffney; John M. Offset lithographic printing press
US5352507A (en) * 1991-04-08 1994-10-04 W. R. Grace & Co.-Conn. Seamless multilayer printing blanket
CA2068629C (fr) 1991-05-14 1996-05-07 James B. Vrotacoe Blanchet d'imprimerie tubulaire sans passage
DE4123920C2 (de) * 1991-07-19 1994-04-14 Bayer Ag Verfahren und Vorrichtung zum Herstellen von gewickelten Rohren
US5206992A (en) * 1992-06-12 1993-05-04 American Roller Company Compressible roller
US5301610A (en) * 1993-04-30 1994-04-12 E. I. Du Pont De Nemours And Company Method and apparatus for making spiral wound sleeves for printing cylinders and product thereof
US5544584A (en) * 1994-12-09 1996-08-13 Thompson Urethane Products Process for producing polymer-covered flexographic printing sleeves
US5798019A (en) * 1995-09-29 1998-08-25 E. I. Du Pont De Nemours And Company Methods and apparatus for forming cylindrical photosensitive elements
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DE19720549A1 (de) * 1997-05-16 1998-11-19 Heidelberger Druckmasch Ag Verfahren zur Herstellung von zylindrischen Beschichtungsträgern
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US6257140B1 (en) * 1999-12-27 2001-07-10 Heidelberger Druckmaschinen Ag Continuous process gapless tubular lithographic printing blanket

Also Published As

Publication number Publication date
HK1047262A1 (zh) 2003-02-14
DE10155681A1 (de) 2002-07-11
EP1208996A3 (fr) 2004-07-28
EP1208996A2 (fr) 2002-05-29
JP2002200860A (ja) 2002-07-16
ATE331634T1 (de) 2006-07-15
DE50110319D1 (de) 2006-08-10
US6615721B1 (en) 2003-09-09
JP4593849B2 (ja) 2010-12-08
CN1355099A (zh) 2002-06-26

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