Digital controlled power pre-stretch

The principle of this equipment is to pre-stretch film between two main rolls which have each its own drive and different revolutions. The pre-stretch may be controlled from the control panel, i.e. both revolutions ratio between two main rolls (primary pre-stretch) and output power in the film (secondary pre-stretch). The range of primary pre-stretch moves from 50% up to 500% according to the stretch film used. The range of secondary pre-stretch moves between 70% and 400%, whereas the value 100% means that the film leaves the device and after it is wrapped on the goods it remains neither pre-stretched nor contracted. 2-motors pre-stretch system means an economic solution for quality and sophisticated wrapping in workshops with middle and higher wrapping capacity with requirements for reduction of film consumption, as well as a requirement for often changes of wrapping parameters.