CTC’s Constant Tension Unwind Stands are application engineered for roll size, type of material, tension requirements, web speed, etc. The tension control systems available are: Completely mechanical servo, electro-mechanical, AC Vector, AC Servo, and pneumatic brake.
Fully Cantilevered: Both the roll support arbor and the dancer rollers are cantilevered.
Partially Cantilevered: The roll support arbor is cantilevered, and the dancer system is supported at both ends.
Fully Supported: The removable air shaft is supported at both ends, and the dancer system is supported at both ends.
AUTOMATIC WEB GUIDING: For wider stands that require automatic web guiding, the stand is constructed so that it rides on linear anti-friction bearings which are mounted on the base plate. An electro mechanical web guide system employing a linear actuator shifts the upper portion of the stand in response to signals from the web position sensor. For narrow stands, a web offset pivot guiding system is provided when automatic web guiding is specified.
LOW WEB ALARM (OPTIONAL)
A low web alarm system is available to signal approaching roll run out.
Double end supported unwind