DE853345C - Process for homogenizing and refining rubber or similar plastic masses on rolling mills - Google Patents

Process for homogenizing and refining rubber or similar plastic masses on rolling mills

Info

Publication number
DE853345C
DE853345C DEV1746D DEV0001746D DE853345C DE 853345 C DE853345 C DE 853345C DE V1746 D DEV1746 D DE V1746D DE V0001746 D DEV0001746 D DE V0001746D DE 853345 C DE853345 C DE 853345C
Authority
DE
Germany
Prior art keywords
rubber
rollers
homogenizing
plastic masses
technology
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
DEV1746D
Other languages
German (de)
Inventor
Willy Koehler
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.)
Joseph Voegele AG
Original Assignee
Joseph Voegele 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 Joseph Voegele AG filed Critical Joseph Voegele AG
Priority to DEV1746D priority Critical patent/DE853345C/en
Application granted granted Critical
Publication of DE853345C publication Critical patent/DE853345C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/52Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices with rollers or the like, e.g. calenders
    • B29B7/56Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices with rollers or the like, e.g. calenders with co-operating rollers, e.g. with repeated action, i.e. the material leaving a set of rollers being reconducted to the same set or being conducted to a next set
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/002Methods
    • B29B7/007Methods for continuous mixing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00Use of unspecified rubbers as moulding material

Description

Verfahren zum Homogenisieren und Verfeinern von Kautschuk oder ähnlichen plastischen Massen auf Walzwerken Zum Homogenisieren und Verfeinern von Kautschuk od. dgl. plastischen Anlassen dienen im allgemeinen Walzwerke, deren eng zusammenstehende Walzen mit verschiedenen Umfangsgeschwindigkeiten angetrieben sind und bei denen die schneller laufende Walze etwa 1,5- bis 3mal so schnell umläuft als die langsam laufende Walze. Die irerschiedenen Umfangsgeschwindigkeiten werden hiebei dadurch herbeigeführt, daß zwischen den Walzen ein bestimmtes Übersetzungsverhältnis geschaffen wurde. Da aber die i?eil>nngsverbältnisse in dem Einzugsspalt nicht nur von dem Übersetzungsverhältllis, sondern auch bei gleichem Übersetzungsverhältnis von dem Durchmesser der Walzen abhängig ist, kann durch die Wahl des Übersetzungsverhältnisses, das zu verschiedenen Umfangsgeschwindigkeiten der Walzen führt, das Reibungsverhältnis und damit die Güte des Arbeitsergebnisses nicht eirideutig festgelegt werden.Process for homogenizing and refining rubber or the like plastic masses on rolling mills For homogenizing and refining rubber od. The like. Plastic annealing are generally used in rolling mills whose closely spaced Rollers are driven at different peripheral speeds and at which the faster running roller rotates about 1.5 to 3 times as fast as the slow one running roller. This results in the different peripheral speeds caused a certain transmission ratio to be created between the rollers became. But since the i? Eil> nngsverbältnisse in the feed slot not only from that Transmission ratio, but also with the same transmission ratio of the Depends on the diameter of the rollers, by choosing the transmission ratio, which leads to different circumferential speeds of the rollers, the friction ratio and thus the quality of the work result is not clearly defined.

Weiterhin hat man sich bisher damit begnügt, die sich durch die verschiedenen Umfangsg.eschwindigkeiten der Walzen ergebende Differenz derselben möglichst klein zu halten und versucht, ein günstiges Arbeitsergebnis durch entsprechende Wahl der Walzendurchmesser und der absoluten Drehzahlen zu erreichen. Es hat sich nun gezeigt daß ein bestes Arbeitsergebnis sowohl bezüglich des Grades der Verfeinerung als auch der Arbeitsleistung beim Homogenisieren und Verfeinern von Kautschuk od.dgl. plastischen Massen auf einem Walzwerk dann erreicht wird, wenn die jeweils zusammenarbeitenden Walzen mit einer Differenz der Umfangsgeschwindigkeit angetrieben werden, dlie größer ist als 0,5 m/Sek., wobei die absoluten Drehzahlen den jeweiligen Betriebsbedingungen entsprechend festgesetzt werden können. In Sonderfällen beispielsweise, wenn es darauf ankommt, die Temperatur der Walzen sehr niedrigizu halten, können die absoluten Drehzahlen soweit gesenkt werden, daß eine der Walzen mit einer praktisch gleichkommenden Drehzahl angetrieben wird. Furthermore, one has so far been content with looking through the various The difference in circumferential speeds of the rollers is as small as possible to keep and tries to achieve a favorable work result by appropriate choice of To achieve roller diameter and absolute speeds. It has now been shown that a best work result both in terms of degree of refinement and also the work performance at Homogenize and refine Rubber or the like. plastic masses on a rolling mill is achieved when the respective co-operating rollers with a difference in peripheral speed are driven, dlie is greater than 0.5 m / sec., the absolute speeds can be set according to the respective operating conditions. In special cases for example, when it comes to keeping the temperature of the rollers very low hold, the absolute speeds can be reduced so far that one of the rollers is driven at a practically equivalent speed.

Die Einhaltung einer derart großen Differenz der Umfangsgeschwindigkeit gewährleistet für die Verarbeitung, insbesondere das Verfeinern von Kautschuk, die günstigsten Reibungsverhältn,isse in dem Einzugsspalt. Das neue Verfahren ist dabei unabhängig von dem Durchmesser bzw. den absoluten Drehzahlen der Walzen, die trotz der großen Differenz in der Umfangsgeschwindigkeit klein gehalten werden können, so daß die Abmessungen der Walzwerke und der Kraftbedarf gering sind An sich sind Knetwalzwerke bekannt, bei denen die Mischsalze bei doppelt so großem Durchmesser wie die mit ihr zusammenarbeitenden Knetwalzen mit etwa der halben Umfangsgeschwindigkeit gegenüber derjenigen der Knetwalzen angetrieben, ist und dabei gegenüber den sonst üblichen Ausbildungen eine auf ein Drittel herabgesetzte Drehzahl erhält. Hier sollte durch den verschieden großen Walzendurchmesser bei einer gegebenen Drehzahl für die Knetwalzen eine möglichst kleine Drehzahl der Hauptwa.lze erreicht werden, um eine übermäßige Erhitzung zu verhüten Nicht erkannt wurde dagegen, daß nur durch die Wahl einer möglichst großen Differenz der Umfangsgeschwindigkeit der Walzen unabhängig von den absoluten Drehzahlen oder Walzendurchmessern ein bestes Arbeitsergebnis erzielt werden kann, wobei die eine der Walzen nahezu stillstehen kann, also auch absolut kleine Umlaufzahlen und damit geringste Temperatursteigerung erreicht werden können. Compliance with such a large difference in peripheral speed guarantees for the processing, especially the refining of rubber, which The most favorable friction conditions are in the feed gap. The new procedure is included regardless of the diameter or the absolute speeds of the rollers, which despite the large difference in peripheral speed can be kept small, so that the dimensions of the rolling mills and the power requirement are small per se Kneading mills known in which the mixed salts are twice as large in diameter like the kneading drums that work with it at about half the peripheral speed is driven compared to that of the kneading rollers, and compared to the otherwise usual training receives a speed reduced to a third. Here should be due to the different sized roller diameters at a given speed for the kneading rollers as low a speed as possible for the main roller to prevent excessive heating It was not recognized that only through the choice of the largest possible difference in the circumferential speed of the rollers The best work result regardless of the absolute speeds or roller diameters can be achieved, one of the rollers can almost stand still, so too absolutely small numbers of revolutions and thus the lowest temperature increase can be achieved can.

Claims (1)

PATENTANSPRUCH: Verfahren zum Homogenisieren und Verfeineren von Kautschuk oder ähnlichen plastischen Massen auf einem Walzwerk, dadurch gekennzeichnet, daß die jeweils zusammenarbeiwenden Walzen mit einer Differenz der Umfangsgeschwindigkeiten angetrieben werden, die größer ist als 0,5 m/Sek. und wobei die eine der Walzen mit einer dem Stillstand praktisch nahekommenden Drehzahl umlaufen kann. PATENT CLAIM: Process for homogenizing and refining of Rubber or similar plastic masses on a rolling mill, characterized in that that the respective co-working rollers with a difference in peripheral speeds be driven that is greater than 0.5 m / sec. and wherein one of the rollers can rotate at a speed practically approaching standstill. Angezogene Druckschriften: Deutsche Patentschriften Nr. 6583I4, 669 760; britische Patentschrift Nr. 38I 822; USA.-Patentschriften Nr. I 85o 450, 1 930873; »Die Technologie des Kautschuks« von Dr. R. Referred publications: German patent specifications No. 6583I4, 669 760; British Patent No. 38I822; USA. Patents No. I 85o 450, 1 930873; "The Technology of Rubber" by Dr. R. D i t m a r (A. Hartleben's Verlag, Wien-Leipzig), I9I5, S. 246, 247; »Technologie der Kautschukwaren« von Karl G o t t 1 0 b (Vieweg & Sohn AG., Braunschweig), I925, S. IOI; »Gummi-Zeitung«, 28. Jahrg., S. I539; » Handbuch der gesamten Kautschuktechnologie« vonE.A.Hauser, Bd. I, S. I57; »Die Fabrikation der Kautschuk- und Guttaperchawaren« von Dr. Chr. H e i n z erl i n g (Verlag Fr. Vieweg & Sohn, 3rau.nschwe,ig), 1883, 5. 59.D i t m a r (A. Hartleben's Verlag, Vienna-Leipzig), 1915, pp. 246, 247; "Technology of rubber goods" by Karl G o t t 1 0 b (Vieweg & Sohn AG., Braunschweig), I925, S. IOI; "Gummi-Zeitung", 28th year, p. 1539; »Manual of the complete rubber technology "by E.A. Hauser, Vol. I, p. I57; “The manufacture of the Rubber and gutta percha goods «by Dr. Chr. H e i n z erl i n g (Verlag Fr. Vieweg & Sohn, 3rau.nschwe, ig), 1883, 5. 59.
DEV1746D 1940-07-23 1940-07-23 Process for homogenizing and refining rubber or similar plastic masses on rolling mills Expired DE853345C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEV1746D DE853345C (en) 1940-07-23 1940-07-23 Process for homogenizing and refining rubber or similar plastic masses on rolling mills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV1746D DE853345C (en) 1940-07-23 1940-07-23 Process for homogenizing and refining rubber or similar plastic masses on rolling mills

Publications (1)

Publication Number Publication Date
DE853345C true DE853345C (en) 1952-10-23

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Family Applications (1)

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DEV1746D Expired DE853345C (en) 1940-07-23 1940-07-23 Process for homogenizing and refining rubber or similar plastic masses on rolling mills

Country Status (1)

Country Link
DE (1) DE853345C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014110499A3 (en) * 2013-01-14 2014-09-12 Cabot Corporation Method and apparatus for processing elastomer composite

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1850450A (en) * 1929-04-05 1932-03-22 Gen Tire & Rubber Co Rubber mixing mill
GB381822A (en) * 1931-06-04 1932-10-13 Firestone Tire & Rubber Co Improvements in or relating to methods of and apparatus for treating rubber compositions
US1930873A (en) * 1929-09-26 1933-10-17 Farrel Birmingham Co Inc Rubber refining machine
DE658314C (en) * 1935-01-13 1938-03-26 Celluloid Fabrik Deutsche Process for the production of films from cellulose derivatives
DE669760C (en) * 1939-01-03 Auguste Frerotte Roller mill

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE669760C (en) * 1939-01-03 Auguste Frerotte Roller mill
US1850450A (en) * 1929-04-05 1932-03-22 Gen Tire & Rubber Co Rubber mixing mill
US1930873A (en) * 1929-09-26 1933-10-17 Farrel Birmingham Co Inc Rubber refining machine
GB381822A (en) * 1931-06-04 1932-10-13 Firestone Tire & Rubber Co Improvements in or relating to methods of and apparatus for treating rubber compositions
DE658314C (en) * 1935-01-13 1938-03-26 Celluloid Fabrik Deutsche Process for the production of films from cellulose derivatives

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014110499A3 (en) * 2013-01-14 2014-09-12 Cabot Corporation Method and apparatus for processing elastomer composite
US9855686B2 (en) 2013-01-14 2018-01-02 Cabot Corporation Method and apparatus for processing elastomer composite
US10730211B2 (en) 2013-01-14 2020-08-04 Cabot Corporation Method and apparatus for processing elastomer composite

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