In response to the trend towards increasing use of recycled materials in profiles, battenfeld-cincinnati is demonstrating a newly designed extruder combination.
At K, the Construction Division of the group is showcasing the conEX 63 P conical extruder mounted in a ‘piggyback’ configuration on a twinEX 78-34P. Both extruder models are equipped with energy-saving features as standard.
In some cases, the recycled materials used in window profiles make up more than 40% of the total weight and are used wherever they are not visible. battenfeld-cincinnati has now designed the twinEX/conEX piggyback extruder combination precisely for these applications with a high proportion of regrind. The two counter-rotating twin-screw extruders combined achieve an output of about 500 kg/h. The parallel twinEX 78 can plasticize up to 290 kg/h, and the conical conEX 63 handling up to 220 kg/h.
Thanks to the coextruder’s frame design, this machine combination allows flexibility in die connection facilities, making die changes easier. The extruders share a common control cabinet for simplicity.
The die comes with a central plug, and can be connected quickly and easily, eliminating operating errors such as incorrect wiring, claims the group.
Like all extruders from battenfeld-cincinnati, both use AC motors for increased efficiency. The Intracool screw core tempering system is also featured, boosting the energy-efficiency of the the setup. The extruders come with fully insulated barrels, reducing energy loss through heat radiation whislt boosting stability thanks to the constant temperature.