Sequential Orientation

Sequential Orientation

Speeds above 500 metres per minute

Sequential lines first stretch the cast film along the direction of the machine through a system of rollers; the stretching is achieved by increasing the speeds between groups of rollers. Then the MD-stretched film enters the tenter, an oven-like device which uses a chain to grip and stretch the web in a transverse direction on diverting rails.

This is by far the most common of all orientation methods. Since the early days of biaxial stretching, Brückner has set the standards in this highly specialized field: with line width up to 10.4 metres and speeds above 500 metres per minute - the largest, most flexible and fastest production lines ever built.