EP1346846B1 - Manchon pour l'impression flexographique - Google Patents

Manchon pour l'impression flexographique Download PDF

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Publication number
EP1346846B1
EP1346846B1 EP03004728A EP03004728A EP1346846B1 EP 1346846 B1 EP1346846 B1 EP 1346846B1 EP 03004728 A EP03004728 A EP 03004728A EP 03004728 A EP03004728 A EP 03004728A EP 1346846 B1 EP1346846 B1 EP 1346846B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
sleeve according
conductive
sleeve body
layer
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
EP03004728A
Other languages
German (de)
English (en)
Other versions
EP1346846A2 (fr
EP1346846A3 (fr
Inventor
Heinz W. Lorig
Stephan Lorig
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.)
Polywest Kunststofftechnik Saueressig und Partner GmbH and Co KG
Original Assignee
Polywest Kunststofftechnik Saueressig und Partner GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE20204412U external-priority patent/DE20204412U1/de
Priority claimed from DE10243183A external-priority patent/DE10243183C1/de
Application filed by Polywest Kunststofftechnik Saueressig und Partner GmbH and Co KG filed Critical Polywest Kunststofftechnik Saueressig und Partner GmbH and Co KG
Publication of EP1346846A2 publication Critical patent/EP1346846A2/fr
Publication of EP1346846A3 publication Critical patent/EP1346846A3/fr
Application granted granted Critical
Publication of EP1346846B1 publication Critical patent/EP1346846B1/fr
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
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/18—Curved printing formes or printing cylinders
    • B41C1/182—Sleeves; Endless belts
    • 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
    • B41F27/10—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders
    • B41F27/105—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders for attaching cylindrical printing formes
    • 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
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F5/00—Rotary letterpress machines
    • B41F5/24—Rotary letterpress machines for flexographic printing
    • 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
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/16—Curved printing plates, especially cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/18—Curved printing formes or printing cylinders
    • 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
    • B41N2207/02—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
    • B41N7/00—Shells for rollers of printing machines
    • 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 a sleeve for flexographic printing, with a Sleeve body from at least partially not electrically conductive material, with its inside on a as Air cylinder running, on the roller outer wall electrically conductive carrier roll of a printing press is mountable and in the assembled state at least one contact zone with the support roller having.
  • Sleeves working sleeves
  • the carrier rolls of the printing presses almost are consistently formed by steel cylinders, this is with an internal, leading to holes on the roller outer wall Air system provided, the axial sliding on and off
  • the sleeves (sleeves) are pressurized with compressed air to the Slightly stretch the sleeve body of the sleeve.
  • the sleeve body the sleeves consist in particular of glass fiber reinforced Plastics to accommodate these strains reversible.
  • Electrostatic charges can occur in different areas of the printing press. You can e.g. between the substrate to be printed such as e.g. a film and the printing form due to the lifting movement and caused by excessive charging of the paint. If none appropriate protective measures are taken, increase their potential with an increasing number of printing units the electrostatic Charges with the progress of the substrate to be printed in the machine, so that in the machine direction rear printing units discharge dangerous into the color boxes and or in the chambered doctor blade.
  • Electrostatic charges can be controlled by suitable Adjustment of environmental conditions, especially compliance a humidity of about 65% and / or Jonleiter the Limit air in the work space.
  • the object of the invention is to provide a sleeve for flexographic printing create, on the one hand, at least partially electric non-conductive material, so that their assembly after the Air cushion principle can be performed, and at the same time minimizes the problem of electrostatic charges or avoids.
  • the sleeves are made (partially) non-conductive material to an electrically conductive structure through which the inevitable electrostatic charges are derived directly over the support roller, so that the charging of the individual sleeves or applicator rolls in Printing unit can not reach a size suitable for a discharge, Ignition or deflagration of the solvent is sufficient, and also not passed on to subsequent printing units.
  • This is achieved in that the sleeve with an electric conductive surface is provided with the contact zone via at least one electrically conductive, in the sleeve body arranged element for dissipating electrostatic charges is connected in the roll outer wall of the support roller, and that also the element change its length in the radial direction can.
  • the electrically conductive surface of the sleeve and thus the sleeve for flexographic printing is above that in the sleeve body arranged element and the roller outer wall of the support roller grounded.
  • the sleeves of the invention receive an electrical conductive structure without their weight increases.
  • the user desired low weight can also with the invention Sleeves can be achieved or maintained.
  • a sleeve with a non-conductive, cylindrical layer or intermediate layer is the element in a radially extending recess arranged in the sleeve body.
  • the recess can in this case in particular be formed by a radial bore.
  • the discharge element for the electrostatic charge not the compressibility the layer of non-conductive material hinders, is particularly advantageous in this embodiment, that the element can change its length in the radial direction and independently after installation on electric Set connection necessary length. This can preferably be achieved in that the element is a spring-loaded Having contact body. It is particularly advantageous if the contact body is arranged such that it is prior to assembly protrudes beyond the inside of the sleeve body.
  • the element may be an electrically conductive housing, e.g. made of metal have, which receives the spring and the contact body and with its caseback with the conductive surface connected is.
  • an electrically conductive housing e.g. made of metal have, which receives the spring and the contact body and with its caseback with the conductive surface connected is.
  • the element can be in the Through hole or the recess in particular screwed or glued.
  • a complete derivative to ensure the resulting electrostatic charge can have several elements for the discharge of the electrostatic Charging arranged in particular rotationally symmetrical be.
  • the contact zone does not necessarily have to be on the inside of the Sleeve lie.
  • Most support rollers are with a centering projection provided for the register setting at which the sleeve is centered during assembly with a centering recess. In such support rollers, therefore, the contact zone Part of the centering be, with the other Advantage results that the compressibility of the intermediate layer is not affected.
  • To contact the contact zone With the centering projection to ensure safe, can in provided the centering recess spring-loaded contact elements become.
  • electrically conductive substances or materials may also include those which are electrically dissipative and whose resistivity is between 10 4 ⁇ m and about 10 9 ⁇ m. Accordingly, substances and materials whose resistivity is greater than 10 4 ⁇ m or which are neither conductive nor dissipative are not conductive.
  • the electrically conductive surface of the sleeve can be different Sages are formed or applied.
  • the sleeve body on its outer surface with a conductive surface forming the sleeve Lack be provided.
  • a paint can be made by mixing with conductive particles such as carbon black or with metal pigments such as silver or copper and the like. the desired conductivity receive.
  • the surface of the sleeve body from a conductive plastic layer, in particular one conductive polyurethane layer, which already exist at Construction (build-up) of the sleeve is provided or later is applied.
  • the plastic layer can in particular also made of glass fiber reinforced plastic (GRP) with conductive matrix or one due to the carbon fibers conductive carbon fiber reinforced plastic (CFRP) exist.
  • GRP glass fiber reinforced plastic
  • CFRP carbon fibers conductive carbon fiber reinforced plastic
  • the sleeve body on its outer surface with a metallic coating forming the surface of the sleeve be provided. This is useful, for example to steam the sleeve body with suitable metal. Either the application of the conductive ink as well as the application of a allow metallic coating, already existing Retrofit sleeves for flexographic printing and in a sleeve service subsequently to make conductive.
  • the electrical conductivity of the sleeve may alternatively be achieved in that the sleeve body made of a composite material with electrically conductive, a mesh of Connecting elements forming deposits exists.
  • the sleeve body can be made of a metal fiber or carbon fiber reinforced plastic (CFRP) consist, wherein Care should be taken in the manufacture of the sleeve that the deposits or fibers not only axially, but also extend radially from the contact surface to the surface.
  • CFRP carbon fiber reinforced plastic
  • a completely made of CFK sleeve is only at low Wall thicknesses up to about 5 mm mountable. For larger wall thicknesses This is usually about widening the sleeve for mounting or disassembly to ensure the sleeve body with at least a layer of non-conductive compressible material Mistake.
  • the invention provides that the layer of non-conductive material of the Element for discharging electrostatic charges is.
  • the sleeve body as an element for the Electrostatic discharge at least one tendon of conductive Material, in particular of metal, have.
  • reference numeral 10 is a sleeve for the Flexo printing refers to the air cushion principle on a exclusively shown in Fig. 3, as an air cylinder executed support roller 1 of a flexographic printing press, not shown further can be mounted.
  • the sleeve 10 has a cylindrical Sleeve body 2 with multi-layered construction. At the sleeve 10 may be in particular a so-called build-up sleeve act.
  • the sleeve body 10 may e.g. a base sleeve glass fiber reinforced plastic, with several Layers, such as compressible flexible foam, LD casting compound, Hard foam and a hardcoat or softcoat topcoat, provided is. After selecting the topcoat then depends the type and attachment of the used for printing, not illustrated printing forms.
  • the sleeve body 2 either completely made of electrically non-conductive material, or the sleeve body 2 has a continuous intermediate layer made of electrically non-conductive material, the one Insulation between the outside 3 of the sleeve body 2 and its inside 4 causes.
  • a layer 5 of electrical applied conductive material On the outside 3 of the sleeve body 2 is according to the invention a layer 5 of electrical applied conductive material. At layer 5 it can e.g. around a vapor-deposited metal coating or one Leitlack act. Due to the layer 5, the sleeve 10th over the entire circumference and its entire axial length one electrically conductive surface 6.
  • the sleeve body 2 is at least one total with reference numerals 20 designated element for dissipation of electrostatic Charges from the surface 6 of the sleeve 10 to its inside 4 provided.
  • the element 20 is in a radial bore 23 arranged in the sleeve body 2, which on the inside of the 4 Sleeve body 2 is open and to the outside of the electric conductive layer 5 is covered.
  • the element 20 comprises a contact body shown here as a ball 21, with a spring 22 in the direction of the inside 4 of the adapter sleeve is biased. Ball 21 and spring 22, both are electrically conductive, are in a further not shown, arranged electrically conductive housing, which in the radial bore 23 is inserted.
  • the sleeve 10 In the unmounted state the sleeve 10, as shown in Figs. 1 and 2, the projecting Ball 21 with a part of its surface on the inside 4 of the sleeve body 2 addition.
  • the housing and the associated radial bore However, 23 are designed such that the ball 21st by applying a force in the radial direction completely in can immerse the sleeve body 2. This force in the radial direction inevitably arises after the assembly of the sleeve 10 the support roller 1, as shown in FIG. 3.
  • the end collar of the housing is preferably arranged such that he does not reach to the inside 4 of the sleeve body. 2 zoom ranges. Furthermore, the through hole 23 should be with a Countersink or be provided a step to the sleeve assembly on the support roller 1, a release or displacement of the element 20 by the air cushion to prevent.
  • Fig. 3 shows the sleeve 10 in the assembled state on the support roller 1. Since the inside 4 of the sleeve 10 and the roller outer wall 7 of the support roller 1 are cylindrical, formed on the full axial length a contact zone between sleeve 10 and Supporting roller 1. The air system of the support roller 1 is not shown. As can be clearly seen in FIG. 3, the ball 21 dives completely into the radial bore 23, but by means of the spring 22 is pressed against the roller outer wall 7 of the support roller 1. Electrostatic charges are over the surface 6 and the layer 5, the spring 22 and the ball 23 to Outside wall 7 of the support roller 1 forwarded and from there via the shell of the support roller 1, as with the line 8 in Fig. 3 symbolically clarified, derived from all printing works.
  • the embodiment shown in the figures is only an example and is intended to be the scope of protection of the claimed invention do not limit.
  • the invention may be with new sleeves be realized.
  • the element for dissipation of electrostatic Boots can also be retrofitted into existing ones Sleeves are made of non-conductive material. From the idea of the invention Therefore, a method is included, with which sleeves can be subsequently made conductive, by putting the outside with an electrically conductive layer is provided and installed in the sleeve body an element which is the electrically conductive connection between the Ensured inside of the sleeve and its surface.
  • the invention is not limited to that the sleeve is arranged directly on the air cylinder.
  • the sleeve below Intermediate layer of a so-called adapter sleeve on the air cylinder a printing press can be mounted.
  • the adapter sleeve is electric conductive and the element is located at the contact zone between the inside of the sleeve and the outside of the adapter sleeve, or the adapter sleeve is electrically non-conductive and the element for dissipating electrostatic charges extends to the roll outer wall of the support roller.
  • the derivative of the electrostatic charging effecting element be arranged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Elimination Of Static Electricity (AREA)

Claims (20)

  1. Manchon pour l'impression flexographique comportant un corps en forme de manchon (2), réalisé au moins en partie en matière non conductrice de l'électricité, qui par sa face intérieure (4), peut être monté sur la paroi extérieure (7) d'un cylindre porteur (1) électriquement conducteur réalisé sous forme de cylindre d'air d'une machine d'impression, présentant au moins une zone de contact avec le cylindre porteur (1) et présentant une surface extérieure (6) électriquement conductrice qui est reliée à la zone de contact par au moins un élément (20) électriquement conducteur disposé dans le corps en forme de manchon (2) pour décharger les charges électrostatiques dans la paroi extérieure (7) du cylindre porteur (1), caractérisé en ce que l'élément (20) a une longueur qui peut varier dans la direction radiale.
  2. Manchon selon la revendication 1, caractérisé en ce que l'élément (20) est disposé dans un évidement (23) s'étendant radialement dans le corps de manchon (2).
  3. Manchon selon la revendication 1 ou 2, caractérisé en ce que l'élément (20) présente un corps de contact (21) sollicité par un ressort.
  4. Manchon selon l'une des revendications 1 à 3, caractérisé en ce que l'élément (20) présente un corps de contact (21) qui, avant le montage, fait saillie par rapport à la face intérieure (4) du corps de manchon (2).
  5. Manchon selon la revendication 3 ou 4, caractérisé en ce que le corps de contact est une sphère (21) ou présente une extrémité de contact en forme de demi-sphère.
  6. Manchon selon l'une des revendications 3 à 5, caractérisé en ce que l'élément présente un boitier qui reçoit le ressort (22) et le corps de contact (21) et qui est relié par son fond avec la surface supérieure conductrice.
  7. Manchon selon l'une des revendications 1 à 6, caractérisé par un corps de manchon en matière non conductrice comportant en outre, au moins un perçage traversant radial dans lequel est inséré l'élément pour décharger les charges électrostatiques avant l'application de la surface extérieure conductrice.
  8. Manchon selon l'une des revendications 2 à 7, caractérisé en ce que l'élément est vissé ou fixé par collage dans l'évidement ou le perçage radial correspondant.
  9. Manchon selon l'une des revendications 2 à 8, caractérisé en ce que l'évidement (23) ou le perçage radial présente une dépression venant de l'intérieur.
  10. Manchon selon l'une des revendications 1 à 9, caractérisé par plusieurs éléments, en particulier disposés symétriquement en rotation pour décharger les charges électrostatiques.
  11. Manchon selon l'une des revendications 1 à 10, caractérisé en ce que la zone de contact est un constituant d'un évidement centré avec lequel le manchon se laisse centrer avec une saillie de centrage du cylindre de support pour leur position enregistrée.
  12. Manchon selon l'une des revendications 1 à 11, caractérisé en ce que le corps de manchon (2) comporte sur sa face extérieure une laque conductrice formant la surface supérieure (6) du manchon (10).
  13. Manchon selon l'une des revendications 1 à 11, caractérisé en ce que la surface supérieure est constituée par une couche de matière synthétique conductrice, en particulier par une couche conductrice de polyuréthane.
  14. Manchon selon la revendication 13, caractérisé en ce que la couche de matière synthétique est constituée de matière synthétique renforcée de fibres de verre avec une matrice conductrice, ou constituée par une matière synthétique renforcée de fibres de carbone.
  15. Manchon selon l'une des revendications 1 à 11, caractérisé en ce que le corps de manchon (2) comporte sur sa face extérieure une couche métallique (5) constituant ta surface extérieure du manchon.
  16. Manchon selon l'une des revendications 1 à 15, caractérisé en ce que le corps de manchon est constitué par une matière liée comportant des inserts formant les éléments électriquement conducteurs pour décharger les charges électrostatiques.
  17. Manchon selon la revendication 16, caractérisé en ce que le corps de manchon est constitué par de la matière synthétique renforcée de fibres de carbone.
  18. Manchon selon l'une des revendications 1 à 17, caractérisé en ce que le corps de manchon (22) comporte au moins une couche de matière non conductrice qui est traversée radialement par l'élément (20).
  19. Manchon selon l'une des revendications 1, 2, ou 7 à 18, caractérisé en ce que le corps de manchon présente en tant qu'élément pour la décharge élastique au moins une corde en matière conductrice, en particulier en métal.
  20. Manchon selon l'une des revendications 1 à 19, caractérisé en ce que le manchon est un manchon d'adaptation ou que le manchon peut être monté sur le cylindre de support en intercalant un manchon d'adaptation.
EP03004728A 2002-03-19 2003-03-04 Manchon pour l'impression flexographique Expired - Lifetime EP1346846B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE20204412U 2002-03-19
DE20204412U DE20204412U1 (de) 2002-03-19 2002-03-19 Hülse für den Flexodruck
DE10243183A DE10243183C1 (de) 2002-03-19 2002-09-11 Hülse für den Flexodruck
DE10243183 2002-09-11

Publications (3)

Publication Number Publication Date
EP1346846A2 EP1346846A2 (fr) 2003-09-24
EP1346846A3 EP1346846A3 (fr) 2004-09-08
EP1346846B1 true EP1346846B1 (fr) 2005-08-03

Family

ID=27789758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03004728A Expired - Lifetime EP1346846B1 (fr) 2002-03-19 2003-03-04 Manchon pour l'impression flexographique

Country Status (5)

Country Link
EP (1) EP1346846B1 (fr)
JP (1) JP2003291298A (fr)
AT (1) ATE301044T1 (fr)
DE (1) DE10261955A1 (fr)
ES (1) ES2243820T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005067364A2 (fr) * 2004-01-15 2005-07-28 Windmöller & Hölscher Kg Cylindre pour recevoir une forme d'impression
CN111491801B (zh) 2017-12-13 2022-04-19 富林特集团德国有限公司 气动夹紧的适配器
EP3640031A1 (fr) 2018-10-17 2020-04-22 Flint Group Germany GmbH Cylindre pourvu de broche mobile

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4493256A (en) * 1984-02-29 1985-01-15 American Roller Company Voltage applicator for limiting charge distribution in ESA printing equipment
US5840386A (en) * 1996-02-22 1998-11-24 Praxair S.T. Technology, Inc. Sleeve for a liquid transfer roll and method for producing it
EP0943432B1 (fr) * 1998-02-23 2001-11-07 FGM Fritz Gradert Maschinenbau GmbH & Co. KG Cylindre d'impression avec un noyeau et une chemise glissée là-dessus
DE19820498C2 (de) * 1998-05-07 2000-07-06 Saueressig Gmbh & Co Verfahren zum Herstellen einer Hülse, insbesondere für die Druckindustrie
DE19944136A1 (de) * 1998-11-05 2000-05-11 Sogewa Walzen Sonnwald Gmbh Druckwalze oder Druckwalzenhülse und deren Verwendung für den Flexodruck

Also Published As

Publication number Publication date
ES2243820T3 (es) 2005-12-01
ATE301044T1 (de) 2005-08-15
EP1346846A2 (fr) 2003-09-24
EP1346846A3 (fr) 2004-09-08
JP2003291298A (ja) 2003-10-14
DE10261955A1 (de) 2003-11-13

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