PROCESS AND APPARATUS FOR BUILDING TYRES FOR VEHICLE WHEELS AND TYRES OBTAINABLE THEREFROM

In a process for building tyres for vehicle wheels, at least one tread band (9) or other elastomeric component of a tyre (2) is made by applying at least one continuous elongated element (14) according to a plurality of turns (C) around a forming drum (15) rotating around a geometric rotation axis (...

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Bibliographische Detailangaben
Hauptverfasser:	DE COL CHRISTIAN, CANTU MARCO, AMURRI CESARE EMANUELE, BASILICO ROGER
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING DEVICES OR ARRANGEMENTS RELATED TO TYRES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS PERFORMING OPERATIONS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING TYRE CHANGING OR REPAIRING TYRE INFLATION VEHICLE TYRES VEHICLES IN GENERAL WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	In a process for building tyres for vehicle wheels, at least one tread band (9) or other elastomeric component of a tyre (2) is made by applying at least one continuous elongated element (14) according to a plurality of turns (C) around a forming drum (15) rotating around a geometric rotation axis (X) thereof. The continuous elongated element (14) is made by the action of extruding a first material through an extrusion nozzle (16), to form an inner core (33) of said continuous elongated element (14) exiting from an outlet opening (18) of the extrusion nozzle (16). During the extrusion, a second material different from the first material is conveyed around the first material, at the extrusion nozzle (16) and upstream of the outlet opening (18), to form a coating layer (32) which entirely surrounds the inner core (33). 在一种用于制造车轮轮胎的方法中，轮胎(2)的至少一个胎面带(9)或其他弹性体部件通过围绕成型鼓(15)沿多个匝(C)施加至少一个连续的细长元件(14)而制成，成型鼓(15)围绕其几何旋转轴线(X)旋转。连续细长元件(14)通过挤压第一材料通过挤压喷嘴(16)的动作制成，以形成从挤压喷嘴(16)的出口开口(18)离开的所述连续细长元件(14)的内芯(33)。在挤压过程中，不同于第一材料的第