DE519452C - Process for the production of a two-layer mass cloth for transfer rollers of small diameter or of irregular shapes - Google Patents

Process for the production of a two-layer mass cloth for transfer rollers of small diameter or of irregular shapes

Info

Publication number
DE519452C
DE519452C DEK116185D DEK0116185D DE519452C DE 519452 C DE519452 C DE 519452C DE K116185 D DEK116185 D DE K116185D DE K0116185 D DEK0116185 D DE K0116185D DE 519452 C DE519452 C DE 519452C
Authority
DE
Germany
Prior art keywords
cloth
mass
transfer rollers
small diameter
production
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
Application number
DEK116185D
Other languages
German (de)
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.)
FRANZ KREIL
Original Assignee
FRANZ KREIL
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 FRANZ KREIL filed Critical FRANZ KREIL
Priority to DEK116185D priority Critical patent/DE519452C/en
Application granted granted Critical
Publication of DE519452C publication Critical patent/DE519452C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B41N2207/04—Intermediate layers

Landscapes

  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Description

Verfahren zur Herstellung eines zweischichtigen massetuchs für Übertragungswalzen von geringem Durchmesser oder von unregelmäßigen Formen Durch das Patent 5182r7 wird ein Massetuch für Übertragungswalzen zur Druck- und Oberflächenherstellung und Verfahren zur Herstellung eines solchen Massetuches unter Schutz gestellt, das sich durch die Zweischichtigkeit des Massetuches kennzeichnet.Process for the production of a two-layer mass cloth for transfer rollers of small diameter or of irregular shapes By patent 5182r7 becomes a mass cloth for transfer rollers for printing and surface production and a process for the production of such a mass cloth placed under protection that is characterized by the two-layer structure of the mass cloth.

Die vorliegende Erfindung betrifft eine «eitere Ausbildung dieses Prinzips, nämlich seine Anwendung auf solche übertragungswalzen, welche einen geringen Durchmesser aufweisen oder mit Erhebungen bzw. Vertiefungen von geringem Krümmungsradius versehen sind.The present invention relates to a further embodiment of this Principle, namely its application to such transfer rollers, which have a low Have diameter or with elevations or depressions of a small radius of curvature are provided.

Bei derartigen Gbertragungswalzen ist es im Gegensatz zu solchen mit großem Durchmesser nicht möglich, ein starkes Massetuch zuerst in einer ebenen Form auszugießen und dann um den Kern herumzulegen, «,eil hierbei unzulässige Spannungen eintreten würden oder sich die Oberfläche des Tuches der gewünschten Form nicht hinreichend anschmiegen würde. Man geht in diesem Falle vielmehr so vor, daß man die Masse um den Kern herumgießt. Das Gelingen eines solchen Gusses ist aber gewöhnlich Glücksache. Die Oberfläche des Tuches muß bekanntlich vollkommen glatt und porenlos sein, weil die geringste Unregelmäßigkeit sich beim Arbeitsvorgang ungünstig auswirkt. Bei in cbe nen Formen gegossenen Massetüchern erreicht man dies, wie im Hauptpatent dargelegt ist, dadurch, daß man die in der Form unten befindliche Fläche als Übertragungsoberfläche benutzt, da nach dem Gießen die Luftblasen nach oben steigen und nur die dortigen Teile der Schicht porös machen. Die Unterfläche bleibt dicht. Dieses Verfahren versagt natürlich bei dem Herumgießen von Massen um den Kern. Es wurde daher bislang so vorgegangen, daß der Guß mehrere Male wiederholt wurde, bis sich eine einigermaßen glatte Oberfläche ergab.In the case of such transfer rollers, it is in contrast to those with large diameter not possible, a strong mass cloth first in a flat shape pour it out and then lay it around the core, «hastening impermissible tensions would occur or the surface of the cloth would not be of the desired shape would snuggle up sufficiently. In this case one proceeds rather in such a way that one Pour the mass around the core. However, the success of such a casting is common Hit and miss. As is well known, the surface of the cloth must be perfectly smooth and non-porous because the slightest irregularity has an unfavorable effect on the work process. This is achieved with mass cloths cast in cbe nen forms, as in the main patent is set out by having the surface located below in the form as the transfer surface used because after the watering the air bubbles rise and only those there Make parts of the layer porous. The lower surface remains tight. This procedure fails of course when pouring masses around the core. It has therefore been so until now proceeded that the casting was repeated several times until a reasonably resulted in a smooth surface.

Das Wesen der vorliegenden Erfindung ist nun eine zweischichtige Ausbildung auch solcher Massetücher derart, daß die oben bezeichneten Nachteile fortfallen.The essence of the present invention is now a two-layer construction also such mass cloths in such a way that the disadvantages mentioned above are eliminated.

Gemäß derselben soll um das um den Kern herumgegossene Massetuch ein dünnes porenloses Massetuch herumgelegt -werden, welches vorher in einer ebenen Form in der oben be-@chriebenen Weise ausgegossen worden ist. Ein dünnes Massetuch kann auch um Kerne geringen Durchmessers und um solche Stellen gelegt werden, welche einen geringen Krümmungsradius aufweisen, und schmiegt sich infolge seiner geringen Stärke einwandfrei an. Es ist dann gleichgültig, wie der Guß um den Kern ausgefallen ist. Man kann insbesondere. wie es auch das Hauptpatent bereits vorsieht, für den inneren Guß ein minderw=ertigeres Material verwenden, wodurch erhebliche Ersparnisse erwachsen.According to the same, a mass cloth should be cast around the core thin pore-free mass cloth to be put around, which beforehand in a flat Form has been poured out in the manner described above. A thin mass cloth can also be placed around cores of small diameter and around those places which have a small radius of curvature, and nestles due to its small Strength flawlessly. It is then irrelevant how the casting turned out around the core is. One can in particular. as is the case with the main patent provides for an inferior material to be used for the internal casting, which means considerable savings accrue.

Das Auftragen des zweiten dünnen Massetuches erfolgt zweckmäßigerweise derart, daß der Guß und das Tuch oder auch nur eins von beiden durch Bestreichen mit einem heißen Eisen erweicht und dann übereinandergelegt werden.The second thin mass cloth is expediently applied in such a way that the casting and the cloth or even just one of the two by brushing softened with a hot iron and then placed on top of each other.

Claims (2)

PATEN TANSPRLTCHE: i. Verfahren zur Herstellung eines zweischichtigen Massetuches für Übertragungswalzen von geringem Durchinesser oder von unregelmäßigen Formen zur Druck- und Oberflächenherstellung gemäß Patent 518217, dadurch gekennzeichnet, daß über die um den Kern gegossene Masse ein dünnes, vorher fertiggegossenes Massetuch herumgelegt wird. PATEN TANSPRLTCHE: i. Method of making a two-layer Ground cloth for transfer rollers of small diameter or of irregular ones Molds for printing and surface production according to patent 518217, characterized in, that over the mass poured around the core a thin, previously completely poured mass cloth is lying around. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die Oberfläche der umgegossenen Masse und das fertiggestellte Massetuch oder eins von beiden, zweckmäßigerw -eise mittels eines heißen Eisens, erweicht und dann aufeinandergebracht werden.2. The method according to claim i, characterized in that the Surface of the poured mass and the finished mass cloth or one of both, expediently by means of a hot iron, softened and then brought together will.
DEK116185D 1929-08-13 1929-08-14 Process for the production of a two-layer mass cloth for transfer rollers of small diameter or of irregular shapes Expired DE519452C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK116185D DE519452C (en) 1929-08-13 1929-08-14 Process for the production of a two-layer mass cloth for transfer rollers of small diameter or of irregular shapes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEK0116185 1929-08-13
DEK116185D DE519452C (en) 1929-08-13 1929-08-14 Process for the production of a two-layer mass cloth for transfer rollers of small diameter or of irregular shapes

Publications (1)

Publication Number Publication Date
DE519452C true DE519452C (en) 1931-02-27

Family

ID=25984691

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK116185D Expired DE519452C (en) 1929-08-13 1929-08-14 Process for the production of a two-layer mass cloth for transfer rollers of small diameter or of irregular shapes

Country Status (1)

Country Link
DE (1) DE519452C (en)

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