DE3832515A1 - Underlay for printing unit cylinders, on which a printing plate or packing cloth is attached, of rotary printing machines - Google Patents

Underlay for printing unit cylinders, on which a printing plate or packing cloth is attached, of rotary printing machines

Info

Publication number
DE3832515A1
DE3832515A1 DE3832515A DE3832515A DE3832515A1 DE 3832515 A1 DE3832515 A1 DE 3832515A1 DE 3832515 A DE3832515 A DE 3832515A DE 3832515 A DE3832515 A DE 3832515A DE 3832515 A1 DE3832515 A1 DE 3832515A1
Authority
DE
Germany
Prior art keywords
printing
underlay
attached
unit cylinders
printing plate
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Withdrawn
Application number
DE3832515A
Other languages
German (de)
Inventor
Nikolaus Dr Spiegel
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Priority to DE3832515A priority Critical patent/DE3832515A1/en
Publication of DE3832515A1 publication Critical patent/DE3832515A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B41N6/00—Mounting boards; Sleeves Make-ready devices, e.g. underlays, overlays; Attaching by chemical means, e.g. vulcanising
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/208—Magnetic, paramagnetic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2327/00—Polyvinylhalogenides
    • B32B2327/06—PVC, i.e. polyvinylchloride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate

Landscapes

  • Laminated Bodies (AREA)

Abstract

The invention relates to an underlay for printing unit cylinders, on which a printing plate or packing cloth is attached, of rotary printing machines, which underlay is simple to detach from a printing unit cylinder and is not attacked by solvents or aqueous liquid, a magnetic powder being introduced to fix the underlay on the outer surface of the cylinder.

Description

Die Erfindung bezieht sich auf einen Unterlagebogen für mit Druckplatte bzw. Aufzugstuch bespannte Druckwerkszylinder von Rotationsdruckmaschinen.The invention relates to a support sheet for with Printing plate or elevator cloth covered printing unit cylinders of rotary printing machines.

Derartige Unterlagebogen können aus steifer Pappe bestehen und dienen dazu, z.B. eine biegsame Druckplatte zu unterlegen. Die Unterlagebogen aus Pappe sind jedoch beim Druckplattenwechsel hinderlich, denn sie verbleiben nicht auf dem Druckplattenzylinder, sondern müssen jeweils neu eingelegt und ausgerichtet werden. Um diesen Nachteil zu vermeiden, werden Klebefolien benutzt, die aus Polyester hergestellt sind und auf der Mantelfläche des Druckplattenzylinders festgeklebt sind. Derartige Folien sind sehr steif und können sich durch die Walkarbeit der Zylinder verformen. Wird die Druckplatte oder das Gummituch mit Lösungsmitteln gewaschen, so besteht die Gefahr, daß das Lösungsmittel zwischen Unterlagebogen und Mantelfläche des Plattenzylinders eindringt. Dies kann dazu führen, daß sich auf der Mantelfläche des Druckplattenzylinders Rost bildet, der zu Druckstörungen führt. Unterstützt wird die Rostbildung noch dadurch, daß bei Verwendung von Klebefolien vor dem Aufbringen derselben die Mantelfläche des Druckplattenzylinders entfettet werden muß. Durch die Rostbildung kann ein Austausch der Druckplattenzylinder erforderlich werden, was zu einer erheblichen Kostenbelastung führt.Such backing sheets can consist of stiff cardboard and serve e.g. a flexible pressure plate inferior. The cardboard backing sheets are with Pressure plate change is a hindrance because they do not remain on the printing plate cylinder, but each must be new be inserted and aligned. To overcome this disadvantage avoid, use adhesive films made of polyester are made and on the outer surface of the Printing plate cylinders are glued. Such films are very stiff and can be caused by the flexing of the Deform the cylinder. Will the printing plate or the blanket washed with solvents, there is a risk that the Solvent between the backing sheet and the outer surface of the Plate cylinder penetrates. This can lead to forms rust on the lateral surface of the printing plate cylinder, which leads to pressure disorders. The is supported Rust formation due to the fact that when using adhesive films before applying the same to the outer surface of the Printing plate cylinder must be degreased. Through the Rust formation can result from an exchange of the printing plate cylinder become necessary, resulting in significant Cost burden leads.

Zur Vermeidung von Rostfraß auf der Mantelfläche von Druckwerkszylindern besteht zwar die Möglichkeit, die Zylinder zu verchromen, um Rostbildung zu vermeiden. Diese Maßnahme ist jedoch sehr teuer und außerdem ist die Chromschicht empfindlich gegen Beschädigung, so daß auch hier Rostbildung auftreten kann.To prevent rust on the surface of Printing unit cylinders there is the possibility that Chrome-plated cylinders to prevent rust. These  However, measure is very expensive and besides that Chrome layer sensitive to damage, so that too rust formation can occur here.

Ausgehend von diesen Gegebenheiten, ist es die Aufgabe der Erfindung, einen Unterlagebogen zu schaffen, der einfach vom Druckwerkszylinder zu lösen ist, der durch Lösungsmittel nicht angegriffen wird und bei dessen Verwendung aufwendige Rostschutzmaßnahmen entfallen.Based on these facts, it is the job of Invention to create a pad that is easy from Printing unit cylinder to be solved by solvent is not attacked and expensive to use Anti-rust measures are not necessary.

Gelöst wird diese Aufgabe dadurch, daß der Unterlagebogen aus PVC-Material, vorzugsweise aus Weich-PVC, besteht, daß in das Weich-PVC Magnetpulver eingebracht ist und daß der Unterlagebogen aus Weich-PVC mit einem dünnen Polyester-Laminat kaschiert ist. Ein derartig ausgebildeter Unterlagebogen läßt sich leicht auf den Druckwerkszylinder aufbringen und von diesem Lösen, ohne daß er z.B. beim Plattenwechsel auf der Zylindermantelfläche verrutscht.This task is solved by the fact that the underlay sheet made of PVC material, preferably soft PVC, is that is introduced into the soft PVC magnetic powder and that the Underlay sheet made of soft PVC with a thin one Polyester laminate is laminated. Such a trained one Pad can be easily placed on the printing cylinder apply and from this detachment without e.g. at the Plate change slipped on the cylinder surface.

Ein weiterer Vorteil ist, daß die Zylindermantelfläche nicht entfettet werden muß und somit rostgeschützt ist. Außerdem legt ein derartig ausgebildeter Unterlagebogen bis an seine äußeren Kanten auf der Zylindermantelfläche fest auf, so daß kein Lösungsmittel eindringen kann. Durch das Kaschieren mittels Polyester-Laminat ist verhindert, daß das Weich-PVC durch die verwendeten Lösungsmittel angegriffen wird. Ein derartig ausgebildeter Unterlagebogen erfüllt somit mehrere Funktionen und macht das Verchromen des Zylinders überflüssig, so daß eine einfache und kostengünstige Lösung geschaffen wurde.Another advantage is that the cylindrical surface is not must be degreased and is therefore protected against rust. Furthermore places a document sheet designed in this way to his outer edges on the cylinder surface so that no solvent can penetrate. By lamination polyester laminate prevents the soft PVC is attacked by the solvents used. A thus designed underlay sheet fulfills several Functions and makes the chrome plating of the cylinder redundant, making it a simple and inexpensive solution was created.

Eine Ausgestaltung der Erfindung ist dadurch gekennzeichnet, daß der Unterlagebogen als 0,3 mm dicke Weich-PVC-Magnetfolie ausgebildet ist und mindestens einseitig mit einer 0,05 mm dicken Polyesterfolie kaschiert ist. Diese Ausgestaltung des Unterlagebogens ermöglicht die Verwendung bei allen Druckwerkszylinder, selbst wenn zuvor z.B. Klebefolien benutzt wurden. Gegenüber den sehr steifen Polyesterfolien ist auch die Handhabung der Unterlagebogen gemäß vorliegender Erfindung vereinfacht.An embodiment of the invention is characterized in that that the underlay sheet as 0.3 mm thick Soft PVC magnetic film is formed and at least laminated on one side with a 0.05 mm thick polyester film is. This design of the underlay sheet enables  Use with all printing unit cylinders, even if previously e.g. Adhesive films were used. Compared to the very stiff Polyester film is also the handling of the underlay simplified according to the present invention.

Claims (2)

1. Unterlagebogen für mit Druckplatte bzw. Aufzugstuch bespannte Druckwerkszylinder von Rotationsdruckmaschinen, dadurch gekennzeichnet,
  • - daß der Unterlagebogen aus PVC-Material, vorzugsweise aus Weich-PVC besteht,
  • - daß in das Weich-PVC Magnetpulver eingebracht ist und
  • - daß der Unterlagebogen aus Weich-PVC mit einem dünnen Polyester-Laminat kaschiert ist.
1. Support sheet for printing unit cylinders of rotary printing presses covered with printing plate or elevator cloth, characterized in that
  • - that the underlay sheet is made of PVC material, preferably of soft PVC,
  • - That is introduced into the soft PVC magnetic powder and
  • - That the underlay sheet made of soft PVC is laminated with a thin polyester laminate.
2. Unterlagebogen nach Anspruch 1, dadurch gekennzeichnet, daß der Unterlagebogen als 0,3 mm dicke Weich-PVC-Magnetfolie ausgebildet ist und mindestens einseitig mit einer 0,05 mm dicken Polyesterfolie kaschiert ist.2. Document sheet according to claim 1, characterized, that the underlay sheet as 0.3 mm thick Soft PVC magnetic film is formed and at least one side with a 0.05 mm thick polyester film is covered.
DE3832515A 1988-09-24 1988-09-24 Underlay for printing unit cylinders, on which a printing plate or packing cloth is attached, of rotary printing machines Withdrawn DE3832515A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3832515A DE3832515A1 (en) 1988-09-24 1988-09-24 Underlay for printing unit cylinders, on which a printing plate or packing cloth is attached, of rotary printing machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3832515A DE3832515A1 (en) 1988-09-24 1988-09-24 Underlay for printing unit cylinders, on which a printing plate or packing cloth is attached, of rotary printing machines

Publications (1)

Publication Number Publication Date
DE3832515A1 true DE3832515A1 (en) 1990-04-05

Family

ID=6363654

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3832515A Withdrawn DE3832515A1 (en) 1988-09-24 1988-09-24 Underlay for printing unit cylinders, on which a printing plate or packing cloth is attached, of rotary printing machines

Country Status (1)

Country Link
DE (1) DE3832515A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4447179A1 (en) * 1994-12-30 1996-07-04 Koenig & Bauer Albert Ag Blanket cylinder for offset printing
EP1391320A1 (en) * 2001-05-28 2004-02-25 Tokyo Ohka Kogyo Co., Ltd. Raising member for flexographic printing and method of winding photosensitive press plate
DE10023988B4 (en) * 2000-05-17 2005-09-29 Koenig & Bauer Ag Elevator of a forme cylinder of a high-pressure rotary machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE830196C (en) * 1948-10-01 1952-02-04 Karl Wedekind Magnetizable pressure plate
US3824927A (en) * 1971-01-29 1974-07-23 Ruralist Press Inc Laminated magnetic printing roll assembly
EP0246012A2 (en) * 1986-05-01 1987-11-19 Minnesota Mining And Manufacturing Company Method and underpacking for mounting printing plates on a rotary printing press

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE830196C (en) * 1948-10-01 1952-02-04 Karl Wedekind Magnetizable pressure plate
US3824927A (en) * 1971-01-29 1974-07-23 Ruralist Press Inc Laminated magnetic printing roll assembly
EP0246012A2 (en) * 1986-05-01 1987-11-19 Minnesota Mining And Manufacturing Company Method and underpacking for mounting printing plates on a rotary printing press

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4447179A1 (en) * 1994-12-30 1996-07-04 Koenig & Bauer Albert Ag Blanket cylinder for offset printing
US5653169A (en) * 1994-12-30 1997-08-05 Koenig & Bauer-Albert Aktiengesellschaft Rubber blanket cylinder for offset printing
DE10023988B4 (en) * 2000-05-17 2005-09-29 Koenig & Bauer Ag Elevator of a forme cylinder of a high-pressure rotary machine
EP1391320A1 (en) * 2001-05-28 2004-02-25 Tokyo Ohka Kogyo Co., Ltd. Raising member for flexographic printing and method of winding photosensitive press plate
EP1391320A4 (en) * 2001-05-28 2005-12-21 Tokyo Ohka Kogyo Co Ltd Raising member for flexographic printing and method of winding photosensitive press plate

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8130 Withdrawal