What is a roller disco?
A roller disco is a combined discothèque and skating rink, where attendees are encouraged to participate in roller skating while dancing, or to observe skilled dancers from the sidelines. A dancer roller is a roller that pushes into the web with a controllable force. The dance of a dancer roller, in either a pivoting or sliding motion, is how it moves to accumulate or dispense web in response to any speed variations between the nearest upstream and downstream driven elements.