Web treatment and control

As the range of materials processed on narrow and mid-web presses expands – particularly into unsupported materials and thinner pressure-sensitive laminates – technology developments in web transport and treatment have become ever more critical.

Automation is the key to recent developments in registration systems. Web guiding systems OEM AccuWeb has launched its Dual-Edge technology for narrow web converters requiring centreline web guiding to achieve consistent printing, coating, die-cutting or embossing on different web runs. The technology allows web widths of 18in (450mm) or less to be centerline guided with the use of a single multi-range edge detector. This eliminates the need to adjust dual edge detectors when changing to a different web width. Centerline positioning can be adjusted electronically via the controller’s communication protocols, including EtherNet/IP and ProfiNet.

Another development from AccuWeb is a compact mechanical actuator with a brushless motor design for maintenance-free performance in demanding web guide applications. Despite its small size, the unit delivers 200lbs (90kg) of thrust. Potentiometer feedback is standard.

Automatic register control is a vital component of the drive to automate flexo presses, and CC1 has now introduced the DRC 6000L mark-to-mark, closed loop register control system specifically for the label and packaging applications.