This machine integrates actions of all units as a whole for the centralized control, featuring easy and simple operation. Advanced three-step length counting ensures exactness of the rewinding length the shaft. After rewinding, the two shafts will change automatically, which improves the product ability. Crowned stretch roll: The stretch roll is specially designed to eliminate tape wrinkiling during extensionn and feed. Pneumatic brake design can stop the tape in a minute when being parked so as to ensure the accurate length. The slitting knife is provided with the industrial sharp blade with prolonged use life. Unwind with sound-buffering system, to creat good operation surrounding.