DE2842440A1 - Fitting thermoplastics printing plate on printing roller - by edge-trimming overlap to leave gap between edges, placing polyester strip underneath, and edge-joining - Google Patents

Fitting thermoplastics printing plate on printing roller - by edge-trimming overlap to leave gap between edges, placing polyester strip underneath, and edge-joining

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Publication number
DE2842440A1
DE2842440A1 DE19782842440 DE2842440A DE2842440A1 DE 2842440 A1 DE2842440 A1 DE 2842440A1 DE 19782842440 DE19782842440 DE 19782842440 DE 2842440 A DE2842440 A DE 2842440A DE 2842440 A1 DE2842440 A1 DE 2842440A1
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Germany
Prior art keywords
edges
edge
printing plate
printing
cylinder
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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
DE19782842440
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German (de)
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DE2842440C2 (en
Inventor
Franz Hugo Willy Eid
Gerhard Albert Dipl In Heimann
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DuPont de Nemours Deutschland GmbH
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DuPont de Nemours Deutschland GmbH
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Priority to DE2842440A priority Critical patent/DE2842440C2/en
Publication of DE2842440A1 publication Critical patent/DE2842440A1/en
Application granted granted Critical
Publication of DE2842440C2 publication Critical patent/DE2842440C2/en
Expired legal-status Critical Current

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03FPHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/16Coating processes; Apparatus therefor
    • G03F7/18Coating curved surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/02Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material
    • B29C63/04Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material by folding, winding, bending or the like
    • B29C63/12Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material by folding, winding, bending or the like by winding spirally
    • B29C63/14Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material by folding, winding, bending or the like by winding spirally around tubular articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/02Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/022Mechanical pre-treatments, e.g. reshaping
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112Single lapped joints
    • B29C66/1122Single lap to lap joints, i.e. overlap joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114Single butt joints
    • B29C66/1142Single butt to butt joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43Joining a relatively small portion of the surface of said articles
    • B29C66/432Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/49Internally supporting the, e.g. tubular, article during joining
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41NPRINTING 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
    • B41N1/00Printing plates or foils; Materials therefor
    • B41N1/16Curved printing plates, especially cylinders
    • B41N1/22Curved printing plates, especially cylinders made of other substances
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00Shaping techniques involving a cutting or machining operation
    • B29C2793/0081Shaping techniques involving a cutting or machining operation before shaping

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Abstract

Parent patent process of edge-bonding light-hardenable, thermoplastics, elastomeric, printing plates and comprises trimming the printing plate before image-forming exposure; joining them at the edges and heating the zones adjacent the edges to be joined with application of pressure until they are welded together, with formation of a smooth welding seam. In this addn., the printing plate which is applied seamlessly over a printing roller, is placed onto the roler so that its edges overlap. The overlapping edge zones are trimmed with a side-milling cutter to leave a gap of predetermined width between the adjacent edges. The edges are then joined together and fixed. A protective strip is fixed upon the roller so that it comes to lie under the gap. The strip, which is subsequently removed is pref. made of polyethylene terephthalate film, 0.1 mm thick.

Description

Verfahren zur Kantenverbinduny von lichthärtbarenProcess for the edge connection of light-curable

thermoplastischen elastomeren Druckplatten Gegenstand des Hauptpatentes ist ein Verfahren zur Kantenverbindung lichthärtbarer thermoplastischer elastomerer Druckplatten, das sich dadurch kennzeichnet, dass vor der bildmässigen Belichtung der Druckplatte die zu verbindenden Kanten zugeschnitten und aneinandergefügt werden und dass die den zu verbindenden Kanten benachbarten Plattenbereiche unter Druck solange erwärmt werden, bis ein Verschweissen an den aneinanderstossenden Kanten unter Ausbildung einer Verbindungsstelle mit glatter Oberfläche eingetreten ist.thermoplastic elastomer printing plates the subject of the main patent is a process for the edge joining of light-curable thermoplastic elastomers Printing plate, which is characterized in that before the imagewise exposure the edges to be connected are cut to size and joined together on the pressure plate and that the plate areas adjacent to the edges to be joined are under pressure be heated until welding at the abutting edges has occurred with the formation of a joint with a smooth surface.

Mit diesem Verfahren lassen sich Kantenverbindungen an lichthärtbaren thermoplastischen elastomeren Druckplatten herstellen, die keinerlei Beeinträchtigung des Druckbildes ergeben.With this method, edge connections can be made on light-curable Manufacture thermoplastic elastomer printing plates that do not suffer any damage of the print image.

Durch die vorliegende Erfindung soll dieses Verfahren noch verbessert und weitergestaltet werden für seine besondere Anwendung beim nahtlosen Belegen von Druckzylindern mit einer lichthärtbaren Druckplatte. Bei diesem Anwendungsfall ist zu beachten, dass weder eine Lücke zwischen den zu verbindenden Kanten auftritt noch im Bereich der zu verbindenden Kanten in Folge von Überlängen ein Wulst entsteht. Es hat sich herausgestellt, dass übliche Verfahren zum Zuschneiden entsprechend dem Umfang des Druckzylinders nicht dazu ausreichen, diese Anforderungen zu erfüllen.The present invention aims to further improve this method and further developed for its special application in seamless covering of printing cylinders with a light-curable printing plate. In this use case it must be ensured that there is no gap between the edges to be connected a bead is still formed in the area of the edges to be connected as a result of excess lengths. It has been found that common methods of trimming accordingly the size of the printing cylinder is not sufficient to meet these requirements.

Der Erfindung liegt daher die besondere Aufgabe zugrunde, eine Möglichkeit zu schaffen, mit der beim Zuschneiden und Aufeinanderfügen der Kanten der Druckplatten auf einem 1 zu belegenden Druckzylinder Längendifferenzen gegenüber dem Zylinderumfang in einfacherer sicherer Weise vermeidbar sind. Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass die lichthärtbare Druckplatte bei Herstellung eines mit dieser Druckplatte nahtlos zu belegenden Druckzylinders zum Zuschneiden und Aneinanderfügen ihrer Kanten überlappend auf dem Zylinder aufgelegt und fixiert wird und dass die sich überlappenden Kantenbereiche mittels eines Scheibenfräsers unter Ausbildung eines Schlitzes vorherbestimmter Breite gemeinsam abgeschnitten und entfernt werden und dass die zu beiden Seiten dieses Schlitzes gebildeten Schnittkanten auf dem Zylinder aneinandergefügt und fixiert werden.The invention is therefore based on the particular object of providing a possibility to create with the cutting and joining of the edges of the printing plates on a 1 to be assigned printing cylinder length differences compared to the cylinder circumference are avoidable in a simpler, safer way. This object is achieved according to the invention solved in that the light-curable printing plate when producing one with this Printing plate to be covered seamlessly Printing cylinder for cutting and joining their edges overlappingly placed on the cylinder and fixed and that the overlapping edge areas by means of a side milling cutter cut together to form a slot of predetermined width and removed and that the cut edges formed on both sides of this slot be joined and fixed on the cylinder.

Die Breite des Schlitzes lässt sich durch die Wahl der Dicke des Scheibenfräsers festlegen und kann leicht aufgrund der jeweiligen Gegebenheiten vorher bestimmt werden. Eine einfache Möglichkeit hierfür besteht darin, die erforderliche Schlitzbreite durch Vorversuche in Abhängigkeit von den wesentlichen Parametern, wie Zylinder durchmesser und Dicke der Druckplatte, festzustellen.The width of the slot can be determined by choosing the thickness of the side milling cutter and can easily be determined in advance on the basis of the respective circumstances will. A simple way to do this is to find the required slot width through preliminary tests depending on the essential parameters, such as the cylinder the diameter and thickness of the pressure plate.

Um ein besonders sicheres, leichtes Durchführen des erfindungsgemässen Verfahrens sicherzustellen, kann man die sich überlappenden Kantenbereiche der Druckplatte zum Einfräsen des Trennschlitzes auf dem Zylinder und aufeinander bzw. auf den benachbarten Bereichen der Druckplatte lösbar fixieren.In order to ensure a particularly safe, easy implementation of the To ensure the process, you can use the overlapping edge areas of the printing plate for milling the separating slot on the cylinder and on top of each other or on the neighboring ones Detachably fix areas of the pressure plate.

Um den Trennschlitz bis an seinen Grund mit glatt geschnittenen Seitenkanten auszubilden, die sich glatt und sauber aneinanderstossen lassen, kann man im Rahmen der Erfindung die mit dem eingefrästen Trennschlitz zu versehenden Kantenbereiche der Druckplatte mit einem auf der Oberfläche des Zylinders zu fixierenden Schutzstreifen aus spanabhebend bearbeitbarem Material unterlegen, der nach dem Anbringen des Schlitzes beim Aneinanderfügen der Schlitzkanten entfernt wird. Hierzu kann bevorzugt ein Schutzstreifen aus Polyäthylenglycolterephthalat-Folie von ca. 0,1 mm Dicke benutzt werden.Around the separating slit to its base with smoothly cut side edges to train that can be smoothly and cleanly butted against one another, can be done in the framework of the invention, the edge regions to be provided with the milled separating slot the printing plate with a protective strip to be fixed on the surface of the cylinder made of machinable material underneath after making the slot when joining the slot edges is removed. For this purpose, a Protective strips made of polyethylene glycol terephthalate film with a thickness of approx. 0.1 mm are used will.

Ein Ausführungsbeispiel der Erfindung wird im folgenden anhand der Zeichnung näher erläutert. Die Zeichnung zeigt einen mit einer Druckplatte zu belegenden Zylinder in teilweisem Schnitt.An embodiment of the invention is described below with reference to the Drawing explained in more detail. The drawing shows one to be covered with a printing plate Cylinder in partial cut.

Die auf dem Zylinder 21 anzubringende Druckplatte besteht aus einem Schichtträger 2, einer darauf angeordneten lichthärtbaren, thermoplastischen, elastomeren Schicht 3 und einer darüber angeordneten, abziehbaren (nicht dargestellten) Deckfolie. Diese Druckplatte wird nach den Maßen des damit zu belegenden Zylinders 21 so zugeschnitten, dass sich die parallel zur Zylinderachse befindlichen Kantenbereiche um ca. 5 cm überlappen.The pressure plate to be attached to the cylinder 21 consists of a Layer support 2, a light-curable, thermoplastic, elastomeric layer arranged thereon Layer 3 and a peelable cover sheet (not shown) arranged above it. This printing plate is cut according to the dimensions of the cylinder 21 to be covered with it so that that the edge areas located parallel to the cylinder axis are approx. 5 cm overlap.

Dann wird die Deckfolie entfernt und die Druckplatte in folgender Weise auf dem Zylinder 21 angebracht: Zunächst wird der Zylinder 21 über den ganzen Umfang und die ganze Breite mit einem doppelseitigen Klebeband 31 belegt. Auf diesem Klebeband 31 wird die Druckplatte mit ihrer Trägerschicht 2 belegt, wobei sich die Kantenbereiche 32 und 33 der Druckplatte überlappen.Then the cover sheet is removed and the printing plate in the following Way attached to the cylinder 21: First, the cylinder 21 is applied over the whole The circumference and the entire width are covered with a double-sided adhesive tape 31. On this one Adhesive tape 31, the printing plate is covered with its carrier layer 2, the Overlap edge areas 32 and 33 of the pressure plate.

Zwischen dem doppelseitigen Klebeband 31 und dem unteren überlappenden Kantenbereich 32 im Bereich des später zu führenden Frässchnittes 35 wird ein etwa 2 bis 3 cm breiter Streifen 34 eines spanabhebend bearbeitbaren Materials eingelegt, das sich besonders dadurch auszeichnet, dass die Spanabhebung eine scharfe Schnittkante hinterlässt. Ein geeignetes derartiges Material ist eine Plyäthylenglycolterephthalat-Folie von ca. 0,1 mm Dicke. Zwischen den beiden sich überlappenden Kantenbereichen 32 und 33 der Druckplatte ist ein weiterer ca. 1 bis 2 cm breiter Streifen 36 eines doppelseitigen Klebebandes angeordnet.Between the double-sided tape 31 and the lower overlapping one Edge area 32 in the area of the milled cut 35 to be made later becomes an approximately 2 to 3 cm wide strips 34 of a machinable material are inserted, which is particularly characterized by the fact that the chip removal has a sharp cutting edge leaves behind. A suitable such material is a polyethylene glycol terephthalate film 0.1 mm thick. Between the two overlapping edge regions 32 and 33 of the printing plate is another strip 36 of one approximately 1 to 2 cm wide double-sided tape arranged.

Dann wird der so mit der Druckplatte belegte Zylinder 21 mit einer geeigneten Haltevorrichtung auf den Tisch einer Fräsmaschine aufgespannt, so dass der Frässchnitt im wesentlichen in axialer Richtung erfolgt und ein Frässchlitz 35 erzeugt wird, der in Richtung der Druck- zylindermitte verläuft Die Tiefe des Schnittes ist so einzustellen, dass einerseits die sich überlappenden Kantenbereiche 32 und 33 der Druckplatte durchtrennt werden, andererseits aber das doppelseitige Klebeband 31 bzw. die metallische Oberfläche des Druckzylinders nicht beschädigt wird. Dies bedeutet, dass die Tiefe des Schnittes im untergelegten Streifen 34 endet.Then the so covered with the printing plate cylinder 21 with a suitable holding device clamped on the table of a milling machine, so that the milling cut takes place essentially in the axial direction and a milling slot 35 is generated, which in the direction of the pressure runs through the middle of the cylinder The depth of the cut is to be set so that on the one hand the overlapping Edge areas 32 and 33 of the printing plate are severed, but on the other hand that double-sided adhesive tape 31 or the metallic surface of the printing cylinder not damaged. This means that the depth of the cut is in the underlying strip 34 ends.

Die Schnittkanten des eingefrästen Schlitzes 35 sind daher bis an die untere Fläche der Trägerschicht 2 am unteren überlappenden Kantenbereich 32 glatt ausgebildet.The cut edges of the milled slot 35 are therefore up to the lower surface of the carrier layer 2 at the lower overlapping edge region 32 smooth.

Geeignet für die Herstellung des Frässchnittes sind Scheibenfräser, Kreisfräscr, Kreissägeblätter usw. mit beliebiger Verzahnung. Dieses Werkzeug soll in diesem Zusammenhang der Einfachheit halber als Scheibenfräser bezeichnet werden. Die Dicke des Fräsblattes ist so zu bemessen, dass die Breite des erzeugten Frässchlitzes 35 die durch die Überlappung hervorgerufene Überlänge kompensiert. Die zu kompensierende Überlänge und damit die zu wählende Dicke des Fräsblattes hängt vor allem von der Dicke der verwerteten Druckplatte und in geringerem Masse vom Durchmesser des zu belegenden Zylinders ab. Sie lässt sich durch Vorversuche leicht feststellen.Disk milling cutters are suitable for making the milling cut, Circular milling cutters, circular saw blades etc. with any toothing. This tool is supposed to in this context, for the sake of simplicity, are referred to as side milling cutters. The thickness of the milling blade is to be dimensioned so that the width of the milling slot created 35 compensates for the excess length caused by the overlap. The one to be compensated Excess length and thus the selected thickness of the milling blade depends mainly on the Thickness of the used printing plate and, to a lesser extent, the diameter of the too occupying cylinder. It can easily be determined through preliminary tests.

Beim Fräsen wird man bevorzugt alle in der Frästechnik für das Bearbeiten weicher, empfindlicher Materialien bekannten Massnahmen hinsichtlich Drehzahl, Kühlung und Laufrichtung des Fräserwerkzeuges anwenden.When it comes to milling, preference is given to everyone in milling technology for the processing of soft, sensitive materials with regard to known measures Use speed, cooling and direction of rotation of the milling tool.

Nach dem Fräsen werden die abgetrennten Kantenbereiche 32 und 33 sowie der Klebebandstreifen 36 und der Einlagestreifen 34 entfernt. Die beiden durch den Frässchnitt entstandenen Schlitzkanten werden aneinandergestossen und auf dem Druckzylinder mit Hilfe des noch vorhandenen Klebebandes 31 fixiert. Anschliessend kann der belegte Druckzylinder nach einem der im Hauptpatent beschriebenen Verfahren der gemeinsamen Einwirkung von erhöhter Temperatur und erhöhtem Druck ausgesetzt werden, bis ein nahtloses Verschweissen der aneinanderstoßen den Kanten eingetreten ist.After the milling, the separated edge areas 32 and 33 as well as the tape strip 36 and the insert strip 34 removed. The two through the The slot edges produced by the milling cut are butted against each other and placed on the printing cylinder fixed with the aid of the adhesive tape 31 that is still present. The occupied Printing cylinder according to one of the processes described in the main patent of the common Exposure to elevated temperature and pressure until a seamless welding of the edges butting has occurred.

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Claims (4)

P a t e n t a n s p r ü c h e 1) Verfahren zur Kantenverbindung lichthärtbarer thermoplastischer elastomerer Druckplatten, bei dela vor der bildmässigen Belichtung der Druckplatte die zu verbindenden Kanten zugeschnitten und aneinandergefügt werden und bei dem die den zu verbindenden Kanten benachbarten Plattenbereiche unter Druck solange erwärmt werden bis ein Verschweissen an den aneinanderstossenden Kanten unter Ausbildung einer Verbindungsstelle mit glatter Oberfläche eingetragen ist, nach Patent (Patentanmeldung P 27 22 896.2), dadurch gekennzeichnet, dass die lichthärtbare Druckplatte bei Herstellung eines mit dieser Druckplatte nahtlos zu belegenden Druckzylinders zum Zuschneiden und Aneinanderfügen ihrer Kanten mit ihren zu verbindenden Kantenbereichen überlappend auf dem Zylinder aufgelegt und fixiert wird und dass die sich überlappenden Kantenbereiche mittels eines Scheibenfräsers unter Ausbildung eines Schlitzes vorherbestimmter Breite gemeinsam abgeschnitten und entfernt werden und dass die zu beiden Seiten dieses Schlitzes gebildeten Schnittkanten auf dem Zylinder aneinandergefügt und fixiert werden. P a t e n t a n s p r ü c h e 1) Process for edge joining of light-curable thermoplastic elastomer printing plates, at dela before the imagewise exposure the edges to be connected are cut to size and joined together on the pressure plate and in which the plate areas adjacent to the edges to be joined are under pressure be heated until a weld at the abutting edges is registered with the formation of a connection point with a smooth surface, according to patent (patent application P 27 22 896.2), characterized in that the light-curable Printing plate in the production of a printing cylinder to be covered seamlessly with this printing plate for cutting and joining their edges with their edge areas to be connected overlapping is placed and fixed on the cylinder and that the overlapping Edge areas predetermined by means of a side milling cutter with the formation of a slot Width can be cut and removed together and that on both sides this slot formed cut edges on the cylinder joined together and be fixed. 2) Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die sich überlappenden Kantenbereiche der Druckplatte zum Einfräsen des Trennschlitzes auf dem Zylinder und aufeinander bzw. auf den benachbarten Bereichen der Druckplatte lösbar fixiert werden.2) Method according to claim 1, characterized in that the overlapping edge areas of the pressure plate for milling the separating slot the cylinder and on top of each other or on the adjacent areas of the printing plate be releasably fixed. 3) Verfahren nach Anspruch 1 oder 2 dadurch gekennzeichnet, dass die mit dem eingefrästen Trennschlitz zu versehenden Kantenbereiche der Druckplatte mit einem auf der Oberfläche des Zylinders zu fixierenden Schutzstreifen aus spanabhebend bearbeitbarem Material unterlegt werden, der nach dem Anbringen des Schlitzes beim Aneinanderfügen der Schlitzkanten entfernt wird.3) Method according to claim 1 or 2, characterized in that the Edge areas of the printing plate to be provided with the milled separating slot with a protective strip to be fixed on the surface of the cylinder machinable material are placed under the after making the slot when Joining the slot edges is removed. 4) Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass ein Schutzstreifen aus Polyäthylenglycolterephthalat-Folie von ca. 0,1 mm Dicke benutzt wird.4) Method according to claim 3, characterized in that a protective strip made of polyethylene glycol terephthalate film of about 0.1 mm thickness is used.
DE2842440A 1978-09-29 1978-09-29 Process for edge bonding of light-curable, thermoplastic, elastomeric printing plates Expired DE2842440C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2842440A DE2842440C2 (en) 1978-09-29 1978-09-29 Process for edge bonding of light-curable, thermoplastic, elastomeric printing plates

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Application Number Priority Date Filing Date Title
DE2842440A DE2842440C2 (en) 1978-09-29 1978-09-29 Process for edge bonding of light-curable, thermoplastic, elastomeric printing plates

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DE2842440A1 true DE2842440A1 (en) 1980-04-03
DE2842440C2 DE2842440C2 (en) 1987-01-08

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0197601A1 (en) * 1985-04-03 1986-10-15 Stork Screens B.V. Method of forming a patterned photopolymer coating on a printing roller and also a printing roller with patterned photopolymer coating
EP0571909A2 (en) * 1992-05-29 1993-12-01 MAN Roland Druckmaschinen AG Offset printing blanket
WO1996035581A1 (en) * 1995-05-10 1996-11-14 Btr Plc Printing press cylinders

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NICHTS-ERMITTELT *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0197601A1 (en) * 1985-04-03 1986-10-15 Stork Screens B.V. Method of forming a patterned photopolymer coating on a printing roller and also a printing roller with patterned photopolymer coating
EP0571909A2 (en) * 1992-05-29 1993-12-01 MAN Roland Druckmaschinen AG Offset printing blanket
EP0571909A3 (en) * 1992-05-29 1994-08-10 Roland Man Druckmasch Offset printing blanket
WO1996035581A1 (en) * 1995-05-10 1996-11-14 Btr Plc Printing press cylinders
AU699452B2 (en) * 1995-05-10 1998-12-03 Btr Plc Printing press cylinders

Also Published As

Publication number Publication date
DE2842440C2 (en) 1987-01-08

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