| 摘要 |
The unwinder comprises: a first unwinding position (P2), in which a first reel (Bl) is positioned; a second unwinding position (P3), to which the first reel is transferred when it must be replaced with a second reel (B2); a stand-by position (PI), in which the second reel (B2) is kept in stand by; a first unwinding member (13) arranged and controlled to start rotation of the second reel (Bl) when the first reel (B2) must be replaced with the second reel (B2). Moreover, the unwinder comprises a second unwinding member (31), with at least one endless flexible element (33). The endless flexible element extends from the first unwinding position (P2) to the second unwinding position (P2), and is arranged and controlled in such a manner that the first reel is maintained in contact with said second unwinding member and in rotation by means of the second unwinding member (31) in the first unwinding position (P2), in the second unwinding position (P3) and while it is being transferred from the first unwinding position (P2) to the second unwinding position (P3). |
