machinery feature | Extruder developments


division. “The reliability of this extruder has been ideal for our business.” The latest order will mean that Rotuba will have 12 such machines, which it uses to make a range of profiles – such as LED lighting profiles and point of purchase displays – for global export. “From an operator perspective, the functionality of


the TPC touchscreen controls is a big advantage. We also have flexibility with different feedscrews. They are engineered to fit any Super Blue, which makes produc- tion scheduling much easier,” he added. To support a range of applications, the Super Blue


Amut’s co-extrusion line makes PP pipe with glass fibres and mineral filler, for hot water and sound- proofing drainage


screw extruders is designed to deliver strong perfor- mance in a confined space, he said. PVC pipe producers must make their product continuously, at high perfor- mance, in order to improve profit margins. The system has low space requirements, and is both powerful and energy-efficient, said Roos.


Adding glass fibre Amut has developed a new extrusion line for producing polypropylene (PP) pipe with glass fibres and mineral filler (calcium carbonate or barium sulphate) – which is used for hot water piping and soundproofing drainage piping.


The glass fibres improve the elastic and mechanical


properties of the material, while allowing reduced pipe thickness, and equivalent resistance and thermal expansion. The line has a range of diameters from 16 to 200 mm, with SDR 6–11. The newly designed three- layer co-extrusion head allows a configuration A-B-A or A-B-C with external coloured stripes. The co-extrusion line configuration comprises four


Battenfeld- Cincinnati used a FiberEx 93 extruder to


make a special ‘H-profile’ during AMI’s


Wood-Plastic Composites conference


extruders: EA60 single screw extruder (A), for internal/ external layer; EA75 single screw extruder (B), for middle layer (glass fibres/mineral filler); EA60 single screw extruder (C), for the external layer; and EA20 single screw extruder, for external coloured stripes. Production changeover is fast, because the whole


re-tooling concept is devised to minimise times and manual operator intervention. The gauging measurement system continuously controls all the parameters during production, to ensure high pipe quality, says Amut.


Super performance US-based extrusion specialist Rotuba Extruders is to add five more Super Blue extruders from Davis-Stand- ard this year – with more planned for the near future. “Our first Super Blue was delivered in one week and


the performance has been outstanding,” said said Gil Carmichael, project manager for Rotuba’s extrusion


16 PIPE & PROFILE EXTRUSION | July/August 2016 www.pipeandprofile.com


line is available in 2in (50mm), 2.5in (65mm), 75mm, 3.5in (90mm), 100mm, and 4.5in (114mm) sizes, each with the option of a 24:1 or 30:1 L/D ratio. The extruder is equipped with features including: low noise, high torque double-reduction gearbox; cast aluminum finned heaters bolted to the barrel; AC drive and motor; and a high capacity air cooling system.


Lean machinery Battenfeld-Cincinnatti exhibited its LeanEx and TwinEx pipe extrusion machines at this year’s Chinaplas exhibition.


The main feature was the LeanEx series, which is designed for standard PO pipe extrusion. Complete lines are available for diameters up to 630mm. During the exhibition, the company presented the largest of its three sizes – the LeanEx 90. LeanEx single screw extruders are built at Battenfeld- Cincinnati China using European technology, selected European components and locally sourced screws, barrels and motors. The three available extruder sizes of 60, 75 and 90mm provide high performance with low energy consumption, says the company. Outputs range from 350- 800kg/h for HDPE and


280-600kg/h for PP-R. The second extruder exhibited was the twin screw


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