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Coax
Plastic Recycling Plant with integrated single shaft shredder

The COAX plant design from EREMA. The perfect addition to the "classic" EREMA system.

The COAX plant is ideal as an alternative for the reclaiming of thermoplastic materials which would normally require some size reduction prior to feeding to the classic EREMA plant.

The COAX consists of a single shaft shredder arranged coaxially with an extruder. The shredder rotor and extruder are driven by the same single motor. It enables direct, discontinuous plant feeding with large volume material portions which have not been reduced in size such as tangled PP tapes, polyamide fibre bales, PP fibre bales as well as lumps, crates, rolls of film (without paper core) etc.

Innovation: Segmented pusher system increases flexibility and throughput considerably.

Using a feeder/pusher system comprising of multi segments in the feed area of the single shaft shredder makes it much easier for customers to use the plant when working with varying material shapes, densities and properties. The innovative concept makes it possible to change the intake angle at the single shaft shredder rotor using menu selection. Production can be tailored to optimise the output of each type of material.

For this reason, well flowing and self-feeding materials, lightweight, bulky materials and highly tear-resistant materials (such as fibres and tapes) can be processed equally well on the same machine.

Thanks to the optimised feeding of the processed material to the single shaft shredder, the new intake pusher system also ensures significantly higher capacity at the extruder.

COAX: Particular design features

	The innovative, coaxial configuration of a single shaft shredder with a single screw extruder enables a low-maintenance design with only one main drive (patent pending) and without (partially critical) 90 degrees deflection of material stream between single shaft shredder and extruder.
	The single shaft shredder housing features spiral grooves (patent pending) to enable the efficient, coaxially feeding of the extruder without needing large amounts of costly compressed air.
	The pusher feed system with segmented design enables a very flexible use of the system whilst maintaining high capacities (patent pending).
	Minimum labour requirements through discontinuous feeding with large-volume material portions which have not been reduced in size. No need for external pre-shredding.
	The design with liquid-cooled extruder results in: - efficient cooling of the processed material. - reduced melt temperature. - minimum melt viscosity degradation (MFI loss) of the material processed. - no noise, hot air, risk of fines or dust blown in surrounding air caused by cooling blowers.
	The Coax can be supplied with or without double vented vacuum.
	Bi-metal extruder and Nitrided screw.

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