| 摘要 |
During tyre building, a crown structure (7) is built through the actions of: forming at least one belt layer (8a, 8b) on an auxiliary drum (22) for manufacturing a belt structure (8) at least partly; turning up axially opposite side flaps (10) of said at least one belt layer (8a, 8b) formed on the auxiliary drum (22); transferring the belt structure (8) from the auxiliary drum (22) to at least one service drum (31); forming a tread band (9) by winding of at least one continuous elongated element of elastomeric material into coils disposed mutually adjacent around the belt structure (8) carried by the service drum (31). |
