TPT July 2010

E xtrusion , D rawing & R educing Innovative PVC foam-core pipeline delivers impressive performance

(KMD 90-36 B/R and KMD 75-36 B/R) plus a completely reengineered multilayer pipehead (KM 3 LRK 43). The line can produce PVC foamcore pipe with 400mm diameter and 11.7mm wall thickness at a rate of 900 to 1,000kg per hour. Foaming reduces the density of the pipe’s core layer to as little as 0.6kg per cubic decimetre. This has the effect of reducing the total density of the 3-layer pipe by up to 30% – with proportionate savings in material costs. A typical application for PVC foam-core pipe is pressureless wastewater pipe. KraussMaffei is world market leader in machines and systems for plastics and rubber processing. With its three divisions – injection moulding technology, extrusion technology and reaction process machinery – KraussMaffei is a premium partner for the plastics and rubber processing industries worldwide. KraussMaffei Technologies GmbH – Germany Fax: +49 89 8899 3092 Email: matthias.andreesen@kraussmaffei.com Website: www.kraussmaffei.com KENT Corporation has a new Burrmaster de-burring machine designed for de-burring the cut ends of aluminium extrusions. The new model 2-ex can de-burr a wide range of profiles, with lengths from 10" to 12ft (250mm to 3,657mm). The machine uses a special nylon grit cup brush that is specifically designed for de-burring aluminium extrusions. The machine is capable of de-burring both ends of an aluminium extrusion at a range of up to 2,700 parts per hour depending on size and burr condition. The set up and changeover from one profile to another is very quick and easy. This machine will compliment a full range of Burrmaster machines from manual to automatic with sizes from 1 / 8 " to 7" OD (3mm to 178mm) and 1" to 76ft long (25mm to 23,164mm). Single ended automatic de-burring machines are also available. Kent Corporation – USA Fax: +1 440 237 5368 De-burr aluminium extrusions

RAW material costs can account for as much as 90% of the manufacturing cost of plastic pipe. Targeting the cost-saving potential in this area, KraussMaffei Berstorff has made it a high priority to develop

machines and systems that reduce raw material consumption while maintaining highest pipe quality. KMB’s foam-core pipehead series is headed by two twin-screw extruders

KraussMaffei Berstorff has recently supplied this complete extrusion line for PVC foam-core pipe to a Russian customer

Die-head developments

IN order to keep up with sky-rocket performances of latest generation extruders, Tecnomatic has extended its range of die- heads for the production of PE and PP pipes by introducing the new Venus series, improved mostly in the dynamics of flows in order to reduce the thermal stress of material thanks to 40% lower pressure and the optimization of the temperature trend inside the die-head. Model 500.16- 160 (the first of the currently available three die-head models, suitable for pipes with max. diameter 630mm) is currently being tested at a firm producing HDPE pipes (63mm diameter) for gas transport. The development of these die-heads also meets specific needs such as an increasingly extended range of processable materials as well as fields of application ranging from the above-mentioned water networks to telecommunications.

The new distributor of reduced dimensions allows producing pipes having a bigger diameter than the distributor itself. Concerning this last feature, the die-head has been shortened by 50% and allows producing three pipe sizes with one die- set. Die-sets, on their turn, have been redesigned too in order to allow the user for a quick size change with reduced downtime. Model 500.16-160 is able to produce pipes ranging from 10 to 160mm with throughput up to 500kg, whereas models 800.16-160 and 1200.50-630 are suitable respectively for diameters from 20 to 400mm and from 50 to 630mm, with max. respective throughput of 800 and 1,200kg/h.

Tecnomatic Srl – Italy Fax: +39 035 311286 Website: www.tecnomaticsrl.net

Email: sales@kenttesgo.com Website: www.kenttesgo.com

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J uly 2010

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