DE2328738A1 - Duroplast-coated rolls - for printing or papermaking machines - Google Patents
Duroplast-coated rolls - for printing or papermaking machinesInfo
- Publication number
- DE2328738A1 DE2328738A1 DE19732328738 DE2328738A DE2328738A1 DE 2328738 A1 DE2328738 A1 DE 2328738A1 DE 19732328738 DE19732328738 DE 19732328738 DE 2328738 A DE2328738 A DE 2328738A DE 2328738 A1 DE2328738 A1 DE 2328738A1
- Authority
- DE
- Germany
- Prior art keywords
- coating
- roller
- printing
- cylinder
- cylinder according
- 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.)
- Withdrawn
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/08—Pressure rolls
-
- 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
- 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
- B41N7/06—Shells for rollers of printing machines for inking rollers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
-
- 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
- B41N2207/00—Location or type of the layers in shells for rollers of printing machines
- B41N2207/14—Location or type of the layers in shells for rollers of printing machines characterised by macromolecular organic compounds
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Werner RoesnerWerner Roesner
6221 Altennai'n/Tö. 5U.4. Ο6221 Altennai'n / Tö. 5U.4. Ο
Metallurgik GmbH
Jw eu-I s enburgMetallurgik GmbH
Jw eu-I s enburg
Beschichtete Walze oder Zylinder für Druck- und Papiermaschinen Coated roller or cylinder for printing and paper machines
Die Erfindung bezieht sich auf Walzen und Zylinder in Druck- und Papiermaschinen, die mit einem überzug aus einem Kunststoff versehen sind, wie z.B. Druckwalzen, Leimwalzen, I^arbwalzen, Verreiberwalzen, Uaektzylinder, Transportwalzen.The invention relates to rollers and cylinders in printing and paper machines, which are made with a coating are provided with a plastic, such as pressure rollers, glue rollers, painting rollers, distribution rollers, actuating cylinders, Transport rollers.
Es ist bekannt, derartige Walzen mit einem Überzug aus einem thermoplastischen Kunststoff zu versehen, z.B. aus Nylon oder Rilsan-Verbindungen. Diese Materialien sind relativ teuer und haben bei der vorliegenden Anwendung erhebliche technische Nachteile. Zur Erzielung guter und einwandfreier Überzüge sind Schichtdicken von unter Umständen sogar mehreren Millimetern erforderlich. Vor dem Einsatz solcher Walzen ist ein Vordrehen und nachfolgender Schleifvorgang erforderlich. Diese Arbeitsgänge verteuern das Produkt erheblich. Der iberzug hat trotzdem nur eine begrenzte funktionsfähige Lebensdauer und die Walze muß dann mit einem neuen überzug versehen werden. Hierzu muß der aufgebrachte Iberzug ganz entfernt werden. Ein Ausbessern ist nicht möglich. Eine Porenanfälligkeit und Beschädigung ist im übrigen bei thermoplastischen MaterialienIt is known to have such rolls with a coating to be provided with a thermoplastic material, e.g. made of nylon or Rilsan compounds. These materials are relatively expensive and have considerable technical disadvantages in the present application. To achieve good and For perfect coatings, layer thicknesses of possibly even several millimeters are required. Before the The use of such rolls requires pre-turning and a subsequent grinding process. These operations make them more expensive the product significantly. The cover still only has one limited functional life and the roller must then be provided with a new coating. For this must the applied coating can be completely removed. A mending can not. Incidentally, thermoplastic materials are susceptible to pores and damage
409882/0987409882/0987
-und dickeren Überzügen immer gegeben. In allen Fällen ist daher eine Feubeschichtung der Walze bzw. des Zylinders notwendig. Dies erhöht die Herstellzeit und verteuert die Walzen. Sin v/eiterer Nachteil solcher als Farbwalzen verwendeter Walzen besteht darin, daß die Überzüge nach gewisser Verwendungszeit ihre Konstanz in Bezug auf die Farbaufnahme und Verreibung verlieren.-and thicker coatings are always given. In all cases is therefore a fine coating of the roller or the Cylinder necessary. This increases the production time and makes the rollers more expensive. Sin v / further disadvantage such as Inking rollers used rollers is that the coatings after a certain period of use in their constancy Lose reference to color absorption and trituration.
Aufgabe der Erfindung ist eine Walze bzw. Zylinder mit einem Überzug, der die erwähnten Nachteile nicht auf v/eist.The object of the invention is to have a roller or cylinder a coating that does not have the disadvantages mentioned.
Gemäß der Erfindung wird vorgeschlagen, die Walze bzw. den Zylinder mit einem überzug aus duroplastischem Material, vorzugsweise einem Epoxydharz oder einer Epoxydharzverbindung zu versehen. Epoxydharze sind etwa nur halb so teuer wie Rilsan. Ihr Schmelzpunkt ist niedriger als der von Thermoplasten. Dadurch bedingt, kann beim Aufbringen bzw. Sintern des Überzuges eine Schädigung'des gehärteten Grundmaterials vermieden werden. 3s ist lediglich ein einmaliges Schleifen erforderlich.According to the invention it is proposed that the roller or the Cylinder with a coating of thermosetting material, preferably an epoxy resin or an epoxy resin compound to provide. Epoxy resins are only about half as expensive as Rilsan. Their melting point is lower than that of thermoplastics. As a result, damage to the hardened coating can occur when the coating is applied or sintered Base material can be avoided. 3s is just a One-time grinding required.
In Weiterbildung der Erfindung wird vorgeschlagen, daß die Schichtdicke des Überzuges etwa 0,08 bis 1 mm, vorzugsweise 0,3 Ms 0,7 mm beträgt. Diese Schichtdicke ist wesentlich niedriger als bei thermoplastischen Überzügen und vermindert zusammen mit dem gegenüber thermoplastischen Materialien niedrigeren Materialkosten die Überzugskosten erheblich. Eingehende Versuche haben gezeigt, daß mit den niedrigen Schichtdicken sogar bessere Standzeiten und eine bessere Funktion der Walzen und Zylinder erreicht werden.In a further development of the invention it is proposed that the Layer thickness of the coating about 0.08 to 1 mm, preferably 0.3 Ms is 0.7 mm. This layer thickness is essential lower than with thermoplastic coatings and reduced together with that compared to thermoplastic coatings Materials lower material costs the coating costs significantly. In-depth tests have shown that with the low layer thicknesses, even better service life and better functioning of the rollers and cylinders can be achieved.
Nach einem weiteren Vorschlag der .-.rfindung wird der Überzug im eÄtrostatischen Pulverspritzverfahren hergestellt. Dieses Verfahren hat sich für die Herstellung von dünnenAccording to a further proposal by the invention, the coating Manufactured using the static powder spraying process. This process has been used for the manufacture of thin
4 0 9 8 8 2/09874 0 9 8 8 2/0987
duroplastischen Überzügen als am besten geeignet erwiesen. Es wird mit + Spannung gearbeitet, wobei das Werkstück geerdet ist und das Kraftfeld auf das Pulver einwirkt. Die Pulverkörnung ist wesentlich kleiner als z.3. beim Wirbelsintern und liegt in dem Bereich zwischen C - 100 M-. Entsprechend der Körnung wird die Stromstärke eingestellt. Durch Wahl der Austrittsform der Pulverspritzdüse ist eine Beeinflußung der Kunststoffpulverwolke möglich. Pur dicke Walzen und kugelförmige Hohlkörper wird die Düse trichterförmig gestaltet, für dünne V.'aizen sp'-.ltförmig.thermoset coatings proved to be most suitable. + Voltage is used, the workpiece is earthed and the force field acts on the powder. The powder grain size is much smaller than z.3. in vortex sintering and is in the range between C - 100 M-. The current intensity is set according to the grain size. By choosing the exit shape of the powder spray nozzle, it is possible to influence the plastic powder cloud. Purely thick rollers and spherical hollow bodies, the nozzle is funnel-shaped, for thin V.'aizen sp '-. Lt-shaped.
Vor/Äem Aufbringen des Überzuges werden die Walzen oder Zylinder vorgewärmt und zwar auf Temperaturen von 180-2000C, Diese Temperaturen liegen unter denen für Thermoplaste. Diese niedrigeren Temperaturen sind vorteilhaft für dasBefore / Äem applying the coating, the rollers or cylinders are preheated and indeed at temperatures of 180-200 0 C, these temperatures are lower than those for thermoplastics. These lower temperatures are beneficial for that
Grundmaterial. Pur Schichtdicken unter 100A ist bei der Erfindung keine Vorwärmung erforderlich.Base material. Pur layer thicknesses below 100A are at the Invention no preheating required.
Nach dem Aufbringen des Überzugsm'ateriais könnt die Walze bzw. der Zylinder in einen Heizraum zur Nachwärmung bzw. Sinterung der Schicht. Es werden hierzu übliche iiachwärmöfen mit Luftumwälzung verwandt. Nach Erwärmung des Ofens auf ca. 2000C wird das Werkstück für die Dauer von etwa 20 iuinuten in den Ofen eingebracht.After the coating material has been applied, the roller or cylinder can be placed in a heating room for reheating or sintering the layer. Conventional reheating ovens with air circulation are used for this purpose. After heating the oven to approximately 200 0 C, the workpiece for the duration of about 20 iuinuten introduced into the furnace.
Parbführung, Verteilung und insbesondere die Reinigung der Walzenoberfläche ist als hervorragend zu bezeüinen gegenüber bisherigen Ummantelungen.Parade guidance, distribution and in particular the cleaning of the The roller surface can be described as excellent previous sheaths.
In der Zeichnung, die einen Schnitt durch eine erfindungsgemäße Waise darstellt, ist mit 2 die Walze und mit 1 der Überzug bezeichnet.In the drawing, which is a section through an inventive Represents orphan, 2 denotes the roller and 1 denotes the coating.
409882/0987409882/0987
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732328738 DE2328738A1 (en) | 1973-06-06 | 1973-06-06 | Duroplast-coated rolls - for printing or papermaking machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732328738 DE2328738A1 (en) | 1973-06-06 | 1973-06-06 | Duroplast-coated rolls - for printing or papermaking machines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2328738A1 true DE2328738A1 (en) | 1975-01-09 |
Family
ID=5883171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19732328738 Withdrawn DE2328738A1 (en) | 1973-06-06 | 1973-06-06 | Duroplast-coated rolls - for printing or papermaking machines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2328738A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1989002005A1 (en) * | 1987-08-27 | 1989-03-09 | Beloit Corporation | An apparatus and method for removing fluid from a fibrous web |
EP0445753A2 (en) * | 1990-03-07 | 1991-09-11 | Felix Böttcher GmbH & Co. KG | Rollers with plastic coating and process for their manufacture |
DE4226789A1 (en) * | 1992-08-13 | 1994-02-17 | Sigri Great Lakes Carbon Gmbh | Fiber-reinforced plastic roller with outer, wear-resistant, filler-containing plastic layer |
EP0858909A2 (en) * | 1997-02-14 | 1998-08-19 | Heidelberger Druckmaschinen Aktiengesellschaft | Printing machine with a corrosion-resistant printing cylinder |
-
1973
- 1973-06-06 DE DE19732328738 patent/DE2328738A1/en not_active Withdrawn
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1989002005A1 (en) * | 1987-08-27 | 1989-03-09 | Beloit Corporation | An apparatus and method for removing fluid from a fibrous web |
EP0445753A2 (en) * | 1990-03-07 | 1991-09-11 | Felix Böttcher GmbH & Co. KG | Rollers with plastic coating and process for their manufacture |
EP0445753A3 (en) * | 1990-03-07 | 1993-02-10 | Felix Boettcher Gmbh & Co. Kg | Rollers with plastic coating and process for their manufacture |
DE4226789A1 (en) * | 1992-08-13 | 1994-02-17 | Sigri Great Lakes Carbon Gmbh | Fiber-reinforced plastic roller with outer, wear-resistant, filler-containing plastic layer |
EP0858909A2 (en) * | 1997-02-14 | 1998-08-19 | Heidelberger Druckmaschinen Aktiengesellschaft | Printing machine with a corrosion-resistant printing cylinder |
EP0858909A3 (en) * | 1997-02-14 | 1999-09-01 | Heidelberger Druckmaschinen Aktiengesellschaft | Printing machine with a corrosion-resistant printing cylinder |
US6006663A (en) * | 1997-02-14 | 1999-12-28 | Heidelberger Druckmaschinen Aktiengesellschaft | Printing press and method having a printing unit cylinder protected against corrosion |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OD | Request for examination | ||
8139 | Disposal/non-payment of the annual fee |