Footbridge

The so-called “bridge” directs the single-faced lengths of corrugated board up to the bridge guide and ultimately to the bridge brake. It can be set up for single, double and triple wall corrugated board. To be able to determine and potentially control the position of the single-faced web at the end of the bridge, BHS Corrugated developed Webtrol, a metering system integrated into the bridge guide. Webtrol guarantees precise positioning of the web towards the center of the corrugator or outside web. With its adjustable brake drum, the BHS Corrugated bridge brake applies precise and constant web tension to provide optimal conditions for high-quality and consistent heating, glue application and subsequent bonding of the corrugated board. The brake resistance can be controlled pneumatically via a brush station with low-wear brushes. The bridge’s control dynamics are designed for speeds up to 450 m/min; a buffer function is one of the features ensuring consistent web speeds. Manual waste elimination on the bridge facilitates the approach to the corrugator. A high-performance drive and tension system ensures safe transport of the web. A frequency-controlled rotary current motor coupled with the Single Facer is the core element of the drive station.