KraussMaffei Berstorff invests in new rubber profile production line

According to KraussMaffei Berstorff, the components of the high-performance Vac GE 90 KSL x 20 D extruder generate added value. This applies to the energy-efficient water-cooled asynchronous three-phase motor, the enlarged feed roll opening for improved material feeding and the materials used for barrels and screws to minimise wear. The tailored barrel degassing system was developed for processing a wide variety of different compounds under ideal process conditions and with maximum output rates. Thanks to the modular line configuration and the revised design of the extrusion head, the extruder is easily adapted to the most varied applications, says the company.

The microwave and hot-air channel has been continuously improved on the basis of the proven standard. Thanks to the pneumatic door adjustment, set-up and cleaning times with frequent material changes are substantially reduced. The hot door inside is automatically lowered in frame direction, which provides easy access to the product. The closed-circuit process air circulation gives maximum cost savings as the air is centrally heated and 90 % of the energy-consuming hot air remains within the circuit.

The 1.5 kW magnetron units of the microwave channel are continuously adjustable. A circulator integrated into the energy supply transfers the energy that is not absorbed by the product to the connected water load, which results in longer magnetron service life. Each of the three modules is equipped with four 1.5 kW magnetrons, i. e. each module supplies a magnetron power of 6 kW. This channel features a total installed magnetron power of 18 kW. The microwave generators are arranged above and below the conveyor belt. The design of the microwave coupling system ensures extremely homogeneous field distribution. Both the microwave power and the conveyor belt speed can be continuously adjusted. The microwave line features an effective cross section of 150 mm width and 75 mm height.

KraussMaffei Berstorff says the actual productivity driver is the reliable and time-saving operating concept of the line. All important functions of the profile production line can be easily set. The central control panel at the extruder exhibits a logical structure and a self-explanatory user interface to control the rubber processing extruder and the vulcanising systems.