WCA November 2007

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Technology news
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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.
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:
Website:
Wire & Cable ASIA – November/December 2007
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.
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:
Website:
Rosendahl – increas-
ing output quantity
m
New addition to Rosendahl range