technology | Machinery CO-EXTRUSION
KM shows column version of conical twin-screw extruder
KraussMaffei Berstorff presented its KMD 73 K/P conical twin-screw extruder as a column version at the recent Plastpol show in Poland. The company says it is an ideal solution for the increas- ing requirement for cost- effective but high-quality PVC window profile production – as cost optimisation is a strong focus for producers. “Coextrusion is a feasible option because cost-effective materials or recycled materi- als can be used for the invisible core of the profile,” said Eric Sanson, product manager for profile extrusion at KraussMaffei Berstorff. “We can offer each customer the extruder configuration that is
WATER TREATMENT Boosting filter media production
UK-based Warden Plastics has added two more Davis- Standard Euro Blue extruders to its equipment line-up. The company is using the machines to extend produc- tion of its random filter media products for wastewa- ter processes. This brings the company’s Davis-Stand- ard extruder total to five, with future investments on the horizon. Warden has 60mm and 90mm Euro Blue models, but the machine is also available in 50mm, 75mm and 115mm sizes. The biological filter media made on them can be
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products made with HDPE, it says.
Mark Barrett, managing
used in both industry and municipal wastewater treatment applications requiring organic removal, nitrification and denitrification. Its products are made using
recycled and virgin PP, which is essential due to superior bacterial adhesion properties compared to competing
PIPE & PROFILE EXTRUSION | July/August 2017
director of Warden Plastics, said: “We are focused on high volumes, efficiency and quality for a large range of polypropylene products for the wastewater treatment market. These extruders per- form exceptionally well in meeting our delivery and process targets, while allowing us to run a cost- effective operation.” The products are light-
weight, compact, durable and corrosion resistant. ❙
www.davis-standard.com
The column version is suited to smaller spaces
adapted to its respective technical requirements.” The KMD 73 K/P completes
the conical series for the high-output range (120-330kg/ h). The column version is particularly suited for constrained space conditions in production and can be adjusted quickly and moved
easily in all directions. The processing technology
provides optimal melt homogeneity and enables processing of various materials such as regrind, regranulate or dry blend using only one screw geometry. ❙
www.kraussmaffeiberstorff.com
WEAR PROTECTION
Xaloy technology wins award
Nordson’s Xaloy MPX wear coating technology, which increases the abrasion- and corrosion-resistance of single and twin plasticating screws, has won an innova- tion award at the recent Plastpol exhibition in Poland. The technology was
honoured in the ‘Plastics Processing Tools and Equipment’ category. “With the new Xaloy MPX
technology, we continue our history of leading-edge innovations,” said Norbert Zajac, Eastern Europe sales manager for Nordson’s polymer processing systems brands. The technology is
recommended for resisting abrasion from compounds with medium (15 to 35%) filler loadings and for resisting corrosion from halogenated materials, including flame retardants and PVC. It uses tiny tungsten carbide spheres to make a coating that resists wear better than standard coatings applied by high- velocity oxygen fuel (HVOF) thermal spray, said the company. Compared with standard
HVOF tungsten carbide coatings, it has 61% less mass loss in ASTM G65 abrasion testing, 18% less mass loss in ASTM G77 sliding wear testing, and 8.5% greater bond strength in ASTM C633 bond testing, said Nordson. ❙
www.nordson.com
www.pipeandprofile.com
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