The Marveloc-CURTAIN systems of Hammer-IMS can be applied in automated extrusion die control situations. Automatically controlling the gap of the extrusion die helps getting reproducible product quality, minimizes set-up times and avoids human errors reflecting in the quality of the extruded film, sheet or foam.

It should be stressed that, as a rule of thumb, feedback would only be economically viable for production batches spanning more than one worker shift. For plastic extrusion this means that production would exceed multiple tens of tons per batch. You might first have to optimize some internal operations enabling these bigger production batches before you would go for a fully-automated extrusion die.

Hammer-IMS offers complete turnkey solutions by means of the following sub-modules:

1. Connectivity 3.0 Extrusion Feedback Module on our HMI system, i.e. our feedback-capable software environment on an industrial panel pc.

2. A PLC-based I/O system, featuring:

24V PWM signaling bus to power electronics modules for individual bolt control. For each tuning bolt, a separate 24V signal will be foreseen. Alternatively, one field-bus output to control die adjustment robots.
Analog or field-bus based line speed and pump flow monitoring. We will read-out the customer’s extrusion line two most important parameters. We can implement any commercially available field-bus here, though we prefer PROFINET.
Direct communication to our Marveloc-CURTAIN scanner systems by means of Modbus.
The PLC source code is made available to the skilled customer.

Parameter Name	Parameter Value
Options	for production extrusion