EuroWire November 2015

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Feature
Compounds, coverings & extrudingmachinery
November 2015 43
Unitek Crossheads, represented in North
America by Howar Equipment Inc, has
had great success with its new UXH0710
series of fixed centre crossheads on fibre
optic cable insulating and jacketing
requirements.
The crossheads can be used for single
layer, stripe or skin layer insulation.
Benefits include:
• Short head lengths for easy set-up
• Extremely durable material
• Small diameter for even heat
• Precise and few parts yield highest
concentricity
• Few tooling change steps
The simple, compact design of the
UXH0710 series is suitable for insulating
extremely flexible fibre-optic cables
and fibres. The short length of the head
makes the set-up and feeding in of cable/
fibre easy for the operator.
Once assembled, the fixed centred head
will immediately run a highly concentric
product since there is no further operator
intervention and adjustment needed.
Gum space can be adjusted on the fly at
the exit side of the crosshead.
Tooling is extracted in three steps from
the exit side of the crosshead without
needing to remove any heaters.
The new head design is based off a
proven flow technology implemented
on its fluoro-polymer heads, and tested
in collaboration with some worldwide
customers requesting smaller sized
heads, which are more user-friendly when
doing tooling changes.
The fixed centre crosshead allows for a
repeatable, immediate concentric start
up which drastically reduces scrap and
over insulation. A common, single head
design means fewer components to the
crosshead and a smaller spare parts list.
The combination of extreme small inner
volumes and the free flow technology
approach is good for quick colour
changes and reduced downtime.
The smaller inner volume minimises
resonance time in the crosshead and
is a perfect choice for smaller gauge
conductors as well as solid or foamed
insulations. A larger, 13mm (0.512") bore
reduces melt pressure, allowing faster
line speeds at lower pressures.
The UXH0710 series is capable of
processing conductors up to 7mm
(0.275") in diameter and an insulated
diameter up to 10.5mm (0.413").
Howar Equipment Inc – USA
Website:
▲ ▲ The new Unitek UXH0710
Success for the new UXH0710