WCA November 2007

Technology news

New addition to Rosendahl range

Rosendahl has developed a new addition to its Rocomat series – the Rocomat 5L, especially designed for the processing of flame retardant materials. The innovation features the possibility of an increased output quantity, eg 400l/h PVC, which is being mastered by the same system. The Rocomat 5L is developed with the same design as the preceding model, with a rotating shaft in the crosshead. The crosshead is designed in a larger format with deeper channels in order to reduce the pressure build-up. A shorter extruder adaptor favours the flame retardant materials, since the colour change takes place inside the shaft, which requires that only the mass within the distributor shaft needs to be rinsed. Additionally, this process results in minor colour change lengths for the flame retardant materials. This gives the possibility to purge the unused extruder or to use this extruder for an inner skin layer. The colour change shaft is also used to realise the bypass function on all extruders. This unique solution is applicable in any Rosendahl automotive line. New elastomer from Teknor Apex Teknor Apex is launching a new Elexar ® thermoplastic elastomer (TPE) compound which meets stringent UL criteria for flame retardance while providing the rubber-like flexibility and toughness required over a wide temperature range for flexible cord and industrial cable. The Thermoplastic Elastomer Division introduced the new compound, designated Elexar ® EL-1392B, at IWCS/Focus in Florida, USA. The RoHS-compliant Elexar EL-1392B styrenic block copolymer TPE compound can be used in insulation, jacketing, and moulded plugs and connectors.

Rosendahl – increas- ing output quantity

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Some processes are: change of layer, which requires two extruders, skin or strip change – three extruders as well as layer and strip changes which requires four extruders.

Rosendahl Maschinen GmbH – Austria Fax : +43 3113 510059 Email : office@rosendahlaustria.com Website : www.rosendahlaustria.com

It meets flame test requirements specified in UL 94 V-0 for thicknesses of 0.06" (1.5mm), passes the VW-1 vertical flame test per Method 1080 of UL 1581 as both insulation and jacket, has an oxygen index of 28%, and exhibits no dripping when burned. The compound has a UL 1581 continuous use rating of 105˚C. Wires with both insulation and jacketing made of Elexar EL-1392B have passed 7-day oil-resistance tests at 60˚C. Recommended applications for the new TPE include cable and connector products for outdoor devices, power tools, appliances, industrial robots, welding equipment, and entertainment audio and lighting systems. Teknor Apex Company – USA Fax : +1 401 729 0166 Email : info@teknorapex.com Website : www.teknorapex.com

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Wire & Cable ASIA – November/December 2007