摘要:
A method for producing a functionalized rubber that includes adding a diene rubber selected from natural rubber, a synthetic polyisoprene rubber or combinations thereof and an organic peroxide to a mixer, the organo peroxide may be represented by the formula R1—O—O—R2, wherein R1 is selected from hydrogen or an organic moiety of between 4 and 15 carbon atoms and R2 comprises a functional moiety. The mix composition may be mixed until the mix composition reaches a target temperature of between 120° C. and 190° C. and decomposing the organic peroxide to provide a decomposition product comprising the functional moiety and reacting at least a portion of the decomposition product with at least a portion of the diene rubber to produce the functionalized rubber.
摘要:
A tire manufacturing apparatus and a tire manufacturing method capable of efficiently manufacturing quality tire by uniformly expanding the diameter of an annular tread and mounting the tread on a base tire without axial deviation. The tire manufacturing apparatus for mounting an annular tread on the outer periphery of a base tire includes a drum for securing a base tire, a plurality of holding means each having a holding surface for holding the outer periphery of the annular tread, a moving means for moving the holding means along the central axis of the base tire, a sealing means for sealing the opening on one side of the annular tread, and an air supplying means for supplying air into a space surrounded by the annular tread and the sealing means.
摘要:
A segmented annular mold (2) for forming a tread belt (4) having a reinforcing belt structure (5), the belt structure having a radial thickness (t) is disclosed. The mold (2) has a plurality of radially movable and outwardly expandable inner segments (12A, 12B) for forming the inner surface (3) of the tread belt (4) and a plurality of radially movable and contracting outer segments (14A, 14B) for forming the outer tread belt surface. The radially inner and radially outer segments form a mold parting line (80) at a location radially outward of a midpoint of the belt reinforcing structure of the tread belt at a location greater than 50% (t) as measured from the radially innermost surface of the belt reinforcing structure (5). The radially inner segments have upper and lower lateral edge forming portions extending outwardly to the parting line. Similarly, the radially outer mold segments have upper and lower lateral edge forming portions extending inwardly to the parting line (80). The parting line (80) is located at least radially outwardly of a radially inner second belt layer of the belt reinforcing structure (5).
摘要:
A method of manufacturing a radial tyre is disclosed, wherein a tread ring is formed separately from a tyre main body by the use of a tread ring forming apparatus. The radial tyre comprises a belt having a camber and a band wound thereon. The tread ring is an annular assembly of a raw belt, a raw band wound thereon and a raw tread rubber. The tread ring forming apparatus comprising a belt drum (10) made up of segments (14) defining the drum circumference. In a cross section including the belt drum axis (10X), the radially outer surface of each segment is a straight line parallel to the axis. In a cross section normal to the belt drum axis (10X), the radially outer surface is an arc having one radius substantially equal to one half of the drum diameter, but the drum circumference is decreased in the belt edge portion than the central portion by increasing gaps (g) between the segments.
摘要:
Verfahren zum Runderneuern eines abgefahrenen Reifen (2), wobei der Laufbelag des Reifens (2) abgeschliffen bzw. aufgerauht wird, weiters auf die Oberfläche des Reifens eine Schichte (3) eines Bindegummis aufgebracht wird, über den Bindegummi (3) ein in sich geschlossener Ring eines neuen Laufbelages (1) aufgebracht wird, die zwischen dem Bindegummi (3) und dem Laufbelag (1) befindliche Luft entfernt und der Laufbelag (1) durch Vulkanisation des zwischen diesem und dem Reifen (3) befindlichen Bindegummis (3) mit dem Reifen (2) verbunden wird. Dabei wird zwischen dem Bindegummi (3) und der Innenfläche des Laufbelages (1) eine Vielzahl von miteinander verbundenen Kanälen (12), welche im Abstand von den Seitenrändern des Laufbelages (1) enden und welche mit mindestens einer den Laufbelag (1) durchsetzenden Öffnung (14) in Verbindung stehen, vorgesehen, werden nach dem Aufbringen des Laufbelages (1) auf den Reifen (2) die Seitenränder (13) des Laufbelages (1) mit den Seitenflanken des Reifens (2) durch Vulkanisation des dort befindlichen Bindegummis luftdicht verbunden, wird die zwischen dem restlichen Laufbelag (1) und dem Bindegummi (3) befindliche Luft durch die Kanäle (12) und durch die mindestens eine im Laufbelag (1) befindliche Öffnung (14) hindurch abgesaugt und wird hierauf der restliche Laufbelag (1) durch Vulkanisation des zwischen diesem und dem Reifen (2) befindlichen Bindegummis (3) am Reifen (2) befestigt.
摘要:
Procédé et dispositif d'assemblage d'une carcasse (2) de pneumatique et d'une bande de roulement annulaire (1) prévulcanisée, en vue du rechapage de pneumatiques dont la bande de roulement est usée ou de la fabrication de pneumatiques neufs, selon lesquels la bande de roulement annulaire (1) est étirée par centrifugation.