machinery feature | Screenchangers & melt fi ltration


Ettlinger’s ERF 500 boasts a maximum


throughput of 5000kg/hour


extrusion lines.


“We’ve perfected the process of fi ltering out heavy contaminants from reclaimed materials,” he said. “Because of this, proces- sors are now confi dent they can use recycled material


blends in their fi lm, sheet, pipe and profi le products.”


Screenchangers on show


Maag Filtration Systems presented its CSC 116-RS arched screenchanger at the recent Arabplast exhibition. The company says that using arched screens allows the screen surface area to be enlarged up to four times, compared with conventional


designs. The use of a CSC 116-RS helps operators to keep their production rates at consistently high levels, while at the same time signifi cantly reducing energy consumption and operating costs.


The screenchanger was part of a complete system to


make polymer in the mid-tier production range, which included the Extrex 90 GPD twin outlet gear pump – which the company says is an “absolute innovation”. Two different nozzle blocks can be supplied with an individual and constant melt stream by one extruder. The specifi c output and die pressure is guaranteed, says Maag. Operators of extrusion lines can bundle their production capacities and optimise the effi ciency of their lines by feeding two separate nozzles with different throughput and pressure demands from a single extruder. Gneuss, meanwhile, showcased several of its


innovative screenchanger technologies at the recent Interplastica show in Russia. With a fully automatic, process constant operation


and a segmental back fl ushing system, its RSFgenius offers high performance with regard to product quality and effi cien- cy. A new variant, RSFgenius M, is now available for processing highly contaminated materials. Several of these are now


running successfully in Europe, says the company.


Synchronization of the drive


and back fl ushing systems of the RSFgenius Rotary Filtration System enables a signifi cant


increase of the screen area exchange rate and represents a further optimisation of this back


fl ushing system, says Gneuss. With the Rotary Filter KR,


Gneuss now offers a discontinu- ous screenchanger based on its Rotary Filtration System. This


rugged, compact model is especially suited for


fast colour changes and now operating successfully in various compounding and polyethylene applications. And the SFpvc is the latest addition to the company’s


range of screenchangers for PVC. It is specifi cally designed for recycling highly contaminated PVC – the most challenging application for an already challenging material. The rotary screenchanger has a highly robust drive system – to handle contamination surges – and can exactly match the needs of the individual extruder.


Click on the links for more information:  www.ettlinger.com  www.nordsonpolymerprocessing.com  www.psi-polymersystems.com  www.psgdover.com (Maag)  www.gneuss.com


CONEXTRU GmbH Supports in:


Engineering for extrusion


Purchase your next pipe tool via internet at:


www.conextru.eu/shop.html


• Extruder engineering from 30D to 42D from 50 – 1800 kg/h • Supervision of engineering for pipe heads • New pipe product developments and optimization


Delivers :


• Mono & multilayer pipe heads • Multilayer cross heads for pipe coating applications • Extruder parts like screws and feedbushes


info@conextru.eu • Klosterstr. 19, 3011 Tullnerbach, Austria


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