EP0942833B1 - Rouleau de traitement couleur - Google Patents

Rouleau de traitement couleur Download PDF

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Publication number
EP0942833B1
EP0942833B1 EP96946063A EP96946063A EP0942833B1 EP 0942833 B1 EP0942833 B1 EP 0942833B1 EP 96946063 A EP96946063 A EP 96946063A EP 96946063 A EP96946063 A EP 96946063A EP 0942833 B1 EP0942833 B1 EP 0942833B1
Authority
EP
European Patent Office
Prior art keywords
roller
per
coating material
coating
core
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
EP96946063A
Other languages
German (de)
English (en)
Other versions
EP0942833A1 (fr
Inventor
Achim Siebert
Andreas Haakmann
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.)
Westland Gummiwerke GmbH and Co
Original Assignee
Westland Gummiwerke GmbH and Co
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 Westland Gummiwerke GmbH and Co filed Critical Westland Gummiwerke GmbH and Co
Priority claimed from PCT/DE1996/002368 external-priority patent/WO1998024631A1/fr
Publication of EP0942833A1 publication Critical patent/EP0942833A1/fr
Application granted granted Critical
Publication of EP0942833B1 publication Critical patent/EP0942833B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Definitions

  • the invention relates to a roller for color processing rotationally symmetrical core and one applied to the core single layer coating, the coating material from an elastomeric material or from a reactive resin is made and adheres to the rotationally symmetrical Core is connected.
  • the invention further relates to the use of this roller.
  • rollers are mostly used for uniform distribution a pressure medium coming into contact with the roller and for even transfer of this medium to other flat surfaces Objects used.
  • Such rollers are used in particular as a distribution cylinder for printing presses in which to produce a thin, printable color film of a transfer roller and roller system having roller cylinders from the storage vessel of the pressure medium to the pressure plate promoted and "rubbed" by means of the distribution cylinder.
  • the distribution cylinders generally consist of a comparatively hard, but the transfer rollers from one comparatively soft material.
  • the workability of the with the medium brought into contact with the rollers depends on the one hand the properties of the roller coating, in particular of their wettability and surface quality.
  • There are also special requirements for roller coatings for example with regard to abrasion behavior and mechanical Stability and chemical resistance compared to the applied medium, cleaning agents to deliver.
  • the temperature is on the Rolls of applied printing medium during the printing process often in the range of 25 to 35 ° C to keep an optimal Achieve print image.
  • Temperature control of the print medium is done by heat dissipation via the roller, this for example, water-cooled. It must be taken into account that the coating material is mostly thermally insulating acts and the heat dissipation from that applied to the roller Medium hindered towards the roller core. This problem will especially at high print speeds or when using tightened by print media without dampening solution.
  • thermoplastic polyamides are applied to the by means of a powder coating process Roll applied, with subsequent sintering a homogeneous Roll coating is generated.
  • the coating is due to the cooling of the thermoplastic material shrinkage associated with the roll core.
  • thermoplastic material at room temperature or at Temperature is comparatively brittle during the printing process is to avoid mechanical damage Coating material in the above-mentioned layer thickness to apply the roller core.
  • a reduction in the layer thickness of the thermoplastic material with a thermal conductivity ⁇ of approx. 0.2 w / mK to improve heat dissipation to the roll core thus separates due to the mechanical Properties of the coating material.
  • DE 195 17 653 A1 describes a roller for Printing machines known, which consist of a cylindrical body and a coat of one firmly connected to this elastomeric material is made with the help of an adhesion promoter is connected to the base body.
  • the coat is off prefabricated a hose section or a sleeve and for Application to the base body with the help of a under pressure set medium expanded. To achieve the final dimensions the jacket must be subjected to a fine machining process.
  • DE-A-40 28 417 describes inking rollers for printing press inking units known from a part made of base rubber with a predetermined indentation hardness and from spiral rubber inserts with a lower indentation hardness than that of the base rubber part consist. Due to the fluid pressure between the inking roller and the intermediate roller lying against it of the inking unit, the soft rubber spiral grooves deform the nip to pockets, which color from the opposite Move the end parts to the middle part of the inking roller.
  • the single-layer Coating has a layer thickness that is compared dimensioned thin with a layer thickness of 500 microns.
  • the roller coating becomes a very precise temperature control of the print medium on the roller, since only a comparatively low thermal insulation of the roller and thus there is good heat dissipation. Because of the exact Tempering the print medium can be a particularly uniform one Print image are generated.
  • elastomeric materials for roll coating especially natural or synthetic rubber, as reactive resins, for example conventional primer systems can be used. Due to the adhesive connection especially this Coating materials is also with thin layers adequate mechanical resistance of the roller coating given, the coating materials the Chemical resistance and wettability requirements to print media and cleaning agents in meet special dimensions. Through the adhesive connection with the roller core and due to the small layer thickness the roller coating also under that during the printing process introduced heat and mechanical stresses high strength as this is essentially from the roll core be included and not like this at comparative thick roller coatings is the case from the roller coating are to be caught.
  • the thermal conductivity of the coating material preferably has compared to conventional coating materials high values, for example 0.4 W / mK on .
  • rollers according to the invention can thus be reduced the layer thickness of the coating material of 0.5 mm to 0.1 mm and a thermal conductivity of the invention Coating material of 0.4 W / mK compared to approx. 0.2 W / mK of conventional coating materials the heat flow from the roll surface to the roll core and thus the cooling capacity the roller can be improved by a factor of 10 without additional Cooling devices are necessary.
  • the rollers can also use coating material Cooling devices are provided and thus the heat dissipation be further improved while using additional Cooling devices using conventional coating materials due to their thermally insulating properties appears to be of little use.
  • the coating material preferably contains thermally crosslinkable Hard rubber, which advantageously has a high hardness and has a high degree of crosslinking.
  • the coating material advantageously contains polymer Nitrile butadiene, phenolic resins, epoxy resins, polyurethanes, reactive Primer systems, polyester resin, silicone resin, acrylic resin, Acrylates or a mixture of two or more of these Components.
  • the coating material Fillers preferably in proportions of less than 50 percent by weight, in particular contain 20 to 25 percent by weight.
  • silanized Silicic acid can be used.
  • the layer thickness of the coating material can be smaller 100 microns, preferably 5 to 40 microns.
  • rollers according to the invention are in particular as distribution cylinders can be used in printing machines.
  • the rollers according to the invention are in particular as distribution cylinders can be used in printing machines.
  • due to the thin layer thickness and the adhesive connection with the long service life of the rolls due to the roll core is advantageous, because they are used as distribution cylinders in printing machines Rolls are very expensive to replace.
  • rollers are also available in other shapes, for example processing, for example when mixing print media under a defined temperature, advantageous applicable.
  • rollers according to the invention are advantageously characterized by this producible that the coating material in a liquid Medium is dissolved or dispersed that the solution or dispersion is applied to the roller core that the solution or dispersant removed and the coating material adheres to the surface of the rotationally symmetrical roller core is associated.
  • This is in contrast to conventional powder coatings with subsequent sintering the coating material in a very thin and accurate definable layer can be applied to the roll core.
  • the roll core can be applied before the coating material containing solution or dispersion with an adhesion promoter be treated.
  • Solvent or dispersant can be sprayed, dipped, Brush or by knife application.
  • Spraying is a coating with a particularly uniform layer thickness and high surface quality can be produced.
  • the roller provided with the coating material is advantageously to remove the solvent or dispersant and / or for crosslinking a thermally crosslinkable Coating material thermally post-treated.
  • the coating material is applied in a thin layer thickness Roll core applied, so is a mechanical post-processing the coating for surface treatment and for achieving a roller with sufficiently dimensionally accurate external dimensions, as with conventional, with thermoplastic polyamides coated rollers mostly by grinding the im Excess coating material carried out becomes dispensable.
  • the coating material has, for example, the following composition: Nitrile butadiene 100 parts Phenolic resin 100 parts zinc oxide 5 parts Stearic acid 1st chapter soot 70 parts Vulcanizing agent 30 parts accelerator 1st chapter Hexamethylenetetraamine 6 parts
  • the components are used in the rubber processing industry usual devices mixed and as 30 percent Solution of a suitable organic solvent by spraying applied to the roll core, which was previously by means of known processes degreased and from superficial oxide layers was liberated. After flashing off the solvent the applied compound is supplied with heat in a warm air oven networked.
  • the heat can be supplied by means of a warm air oven or by means of IR radiation.

Landscapes

  • Rolls And Other Rotary Bodies (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (12)

  1. Rouleau pour le traitement couleur ayant un coeur à symétrie de révolution ainsi qu'un revêtement monocouche appliqué sur le coeur, la matière de revêtement étant constituée d'une matière élastomère ou d'une résine réactive et étant liée de façon adhésive au coeur à symétrie de révolution, caractérisé en ce que l'épaisseur de couche du revêtement est évaluée comme étant mince par rapport à une épaisseur de couche de 500 µm.
  2. Rouleau selon la revendication 1, caractérisé en ce que la couche présente une conductivité thermique supérieure à 0,2 W/mK.
  3. Rouleau selon la revendication 1 ou 2, caractérisé en ce que la matière de revêtement comprend un caoutchouc dur thermiquement réticulable.
  4. Rouleau selon l'une quelconque des revendications 1 à 3, caractérisé en ce que, la matière de revêtement contient un polymère nitrile/butadiène, une résine phénolique, une résine époxy, un polyuréthanne, des systèmes d'apprêt réactifs, une a résine polyester, une résine silicone, une résine acrylique ou des acrylates.
  5. Rouleau selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la matière de revêtement contient des charges en une quantité jusqu'à 50% en poids.
  6. Rouleau selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la matière de revêtement contient de la suie et/ou de l'acide silicique silanisé actif en tant que charge.
  7. Rouleau selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'épaisseur de couche du revêtement est inférieure à 100 µm.
  8. Rouleau selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la matière de revêtement est liée au coeur du rouleau avec l'aide d'un agent d'adhérence.
  9. Rouleau selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le rouleau muni de la matière de revêtement subi ultérieurement un traitement thermique.
  10. Rouleau selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le rouleau est muni de dispositifs de refroidissement.
  11. Rouleau selon l'une quelconque des revendications 1 à 10, caractérisé en ce que l'on peut obtenir le rouleau en appliquant la matière de revêtement, sous forme d'une solution ou d'une dispersion dans un milieu liquide, sur le coeur du rouleau, puis en éliminant le solvant ou le dispersant et en liant de façon adhésive la matière de revêtement au coeur du rouleau.
  12. Utilisation d'un rouleau selon l'une quelconque des revendications 1 à 11, en tant que cylindre de friction dans les machines d'impression.
EP96946063A 1996-12-07 1996-12-07 Rouleau de traitement couleur Expired - Lifetime EP0942833B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE1996/002368 WO1998024631A1 (fr) 1995-08-14 1996-12-07 Rouleau de traitement couleur

Publications (2)

Publication Number Publication Date
EP0942833A1 EP0942833A1 (fr) 1999-09-22
EP0942833B1 true EP0942833B1 (fr) 2001-07-18

Family

ID=6918427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96946063A Expired - Lifetime EP0942833B1 (fr) 1996-12-07 1996-12-07 Rouleau de traitement couleur

Country Status (1)

Country Link
EP (1) EP0942833B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007062940A1 (de) 2007-12-21 2009-06-25 Weros Technology Gmbh Reiber- oder Übertragungswalze
US7790349B2 (en) 2006-04-10 2010-09-07 Lg. Display Co., Ltd. Blanket for a printing roll, method of manufacturing the same, patterning method using the same, and method of manufacturing liquid crystal display device
WO2011069998A1 (fr) 2009-12-07 2011-06-16 Felix Böttcher Gmbh & Co. Kg Rouleaux distributeurs

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101308431B1 (ko) 2006-04-26 2013-09-30 엘지디스플레이 주식회사 인쇄용 레지스트 및 이를 이용한 패턴형성방법

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7790349B2 (en) 2006-04-10 2010-09-07 Lg. Display Co., Ltd. Blanket for a printing roll, method of manufacturing the same, patterning method using the same, and method of manufacturing liquid crystal display device
CN101054037B (zh) * 2006-04-10 2011-12-07 乐金显示有限公司 印刷辊的敷层及制造方法，构图方法及lcd器件的制造方法
DE102007062940A1 (de) 2007-12-21 2009-06-25 Weros Technology Gmbh Reiber- oder Übertragungswalze
WO2009080003A1 (fr) 2007-12-21 2009-07-02 Technology Gmbh Weros Cylindre de contact ou de transfert
WO2011069998A1 (fr) 2009-12-07 2011-06-16 Felix Böttcher Gmbh & Co. Kg Rouleaux distributeurs
CN102686411A (zh) * 2009-12-07 2012-09-19 费利克斯博星有限两合公司 布墨辊
US9308765B2 (en) 2009-12-07 2016-04-12 Felix Boettcher Gmbh & Co. Kg Distributor rollers
CN102686411B (zh) * 2009-12-07 2017-01-18 费利克斯博星有限两合公司 布墨辊

Also Published As

Publication number Publication date
EP0942833A1 (fr) 1999-09-22

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