DE1785254A1 - Elastic calender roll - Google Patents
Elastic calender rollInfo
- Publication number
- DE1785254A1 DE1785254A1 DE19681785254 DE1785254A DE1785254A1 DE 1785254 A1 DE1785254 A1 DE 1785254A1 DE 19681785254 DE19681785254 DE 19681785254 DE 1785254 A DE1785254 A DE 1785254A DE 1785254 A1 DE1785254 A1 DE 1785254A1
- Authority
- DE
- Germany
- Prior art keywords
- roller
- pressure
- pressed
- calender roll
- discs
- 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.)
- Pending
Links
Classifications
-
- 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
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0032—Producing rolling bodies, e.g. rollers, wheels, pulleys or pinions
- B29D99/0035—Producing rolling bodies, e.g. rollers, wheels, pulleys or pinions rollers or cylinders having an axial length of several times the diameter, e.g. for embossing, pressing, or printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/32—Wheels, pinions, pulleys, castors or rollers, Rims
- B29L2031/324—Rollers or cylinders having an axial length of several times the diameter, e.g. embossing, pressing or printing
Description
l.O-638-D Krefeld, den 29. August 1968 10-638-D Krefeld, August 29, 1968
Die Erfindung bezieht sich auf elastische Walzen, wie sie vorzugsweise für Kalander, aber auch für Walzwerke, Druckwerke, Beschichtungsmaschinen od. dgl. verwendet werden. Derartige Walzen wurden bisher aus Schichten von Baumwolle, Papier oder Asbest gepreßt. Zur Erhöhung der Lebensdauer ist es ferner bekannt geworden, derartige Walzen aus gegossenen, gewickelten oder geschichteten Kunststoffen herzustellen oder die für die Beschichtung verwendeten Natur- oder Kunststoffasern mit Gummi oder Kunststoffen zu tränken.The invention relates to resilient rollers like them preferably used for calenders, but also for rolling mills, printing works, coating machines or the like will. Such rolls were previously made of layers of Pressed cotton, paper or asbestos. Rollers of this type have also become known to increase the service life made of cast, wound or layered plastics or those used for coating Natural or synthetic fibers with rubber or plastics too soak.
Es ist ferner bereits vorgeschlagen worden, Wirr- oder Kaminfasern aus Kunststoffen zu Kuchen zu pressen und schichtweise zu ^erpressen. .It has also already been proposed to press tangled or chimney fibers made of plastics into cakes and to press them in layers. .
- 2 209808/0619 - 2 209808/0619
Die Erfindung betrifft eine Verbesserung von Walzen der zuletzt genannten Art, wodurch die Walze im ganzen dichter und an der Oberfläche homogener werden soll, ohne ihre Elastizität zu verlieren.The invention relates to an improvement of rollers of the last-mentioned type, which makes the roller more dense as a whole and should become more homogeneous on the surface without losing its elasticity.
Gemäß der Erfindung geschieht dies dadurch, daß Kunststoffvliese, insbesondere Polyamidvliese in wechselnder Streichrichtung auf einer Walzenachse geschichtet und dann bis zu ihrer Pließgrenze gepreßt werden. Das Pressen bis zur Fließ-According to the invention, this is done in that plastic fleece, in particular polyamide nonwovens layered in alternating coating direction on a roller axis and then up to their positive limit are pressed. The pressing to flow
grenze erfolgt mit einem Druck von etwa 800 bis 1200 kp/cm und wird zweckmäßigerweise nur so lange aufrechterhalten, bis die Pasern an ihren Kreuzungssteilen verschmelzen, die Paserstruktur und damit die Elastizität aber im großen und ganzen erhalten bleiben. Nach dem Abdrehen und Schleifen zeigt eine derartige Walze an ihrer Oberfläche ein gleichmäßig dichtes Gefüge.limit takes place with a pressure of about 800 to 1200 kp / cm and is expediently only maintained until the pasers merge at their crossing parts, the However, the fiber structure and thus the elasticity are largely retained. After turning and grinding shows such a roller on its surface a uniform dense structure.
Ϊ ■Ϊ ■
Es ist aber auch möglich, den Druck und die Zeiteinwirkung so zu erhöhen, daß ein vollständiges Fließen und damit eine homogene Kunststoffwalze entsteht. Um die Druckwirkung zu unterstützen, wird weiter vorgeschlagen, die Walze während der Druckeinwirkung einer Wärmebehandlung von außen zu unterziehen» But it is also possible to increase the pressure and the time exposure so that a complete flow and thus a homogeneous plastic roller is created. In order to support the pressure effect, it is also proposed to subject the roller to an external heat treatment while the pressure is applied »
In weiterer Ausgestaltung der Erfindung wird vorgeschlagen, mehrschichtige Fliese vor dem Beschichten der Walze durch WErrne und Druck zu behandeln und danach in ScheibenformIn a further embodiment of the invention, it is proposed that multilayer tile be applied to the roller before it is coated Treat heat and pressure and then slice it
- 3 -209808/0619- 3 -209808/0619
auf eine Walzenachse zu schichten und zu einer Walze zu verpressen. Das Anwärmen und Pressen der Vliese bis zur Fließgrenze wird auf einem Kalander mit entsprechend erhitzten Walzen in einem Arbeitsgang ausgeführt, worauf die zweite Arbeitsstufe, nämlich das Beschichten und Pressen der Walze,mit den so erhaltenen, pappeähnlichen Scheiben durchgeffUirt werden kann.to be layered on a roller axis and pressed to form a roller. The heating and pressing of the fleece up to the flow limit is carried out on a calender with appropriately heated rollers in one operation, whereupon the second stage of work, namely coating and pressing the roller with the cardboard-like ones thus obtained Discs can be durchgeffUirt.
209808/0619209808/0619
Claims (1)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19681785254 DE1785254A1 (en) | 1968-09-02 | 1968-09-02 | Elastic calender roll |
GB1230265D GB1230265A (en) | 1968-09-02 | 1969-08-19 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19681785254 DE1785254A1 (en) | 1968-09-02 | 1968-09-02 | Elastic calender roll |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1785254A1 true DE1785254A1 (en) | 1972-02-17 |
Family
ID=5706073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19681785254 Pending DE1785254A1 (en) | 1968-09-02 | 1968-09-02 | Elastic calender roll |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1785254A1 (en) |
GB (1) | GB1230265A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI111025B (en) | 1997-05-30 | 2003-05-15 | Metso Paper Inc | A roll having a thermoplastic coating, a method of making the roll, a composition of a thermoplastic surface coating, a calendering process using rolls with a thermoplastic coating of the invention, and a paper / board made by the rollers |
-
1968
- 1968-09-02 DE DE19681785254 patent/DE1785254A1/en active Pending
-
1969
- 1969-08-19 GB GB1230265D patent/GB1230265A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1230265A (en) | 1971-04-28 |
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