EoW March 2013

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March 2013 34
News
Technology
China seduced by new crossheads . . .
Erocarb has created an enviable reputation for its crosshead over
the last 30 years.
But the new generation of crossheads for flat ribbon cables shows
that it is still improving its products with Chinese operators selecting
the new generation after working on it for just a few hours.
The advantages are clear: reduced dimension and weight, easy
dismantling, simple feeding and still compatible with the previous
tooling.
Starting from a nominal width of 20mm up to 150mm in five sizes, the
standard range is ideally suited for PVC, but even HFFR can be run on
these crossheads.
The connection to the crosshead is perpendicular to the extrusion
line and the adaptor thread has been kept from the original ones.
Erocarb SA – Switzerland
Website:
▲ ▲ The new generation of crosshead from Erocarb
. . . and die drool elimination
Excess of material at the output of a die, during an extrusion process,
also called die drool, can significantly reduce the production speed of
a cable.
A clear comprehension of the phenomenon for any kind of polymer
is not yet available. Nevertheless there is some help to reduce the
impact of such default: PTFE-coating.
Erocarb has recently introduced a new three layer coating for
extrusion tools with great success. In order to save the concentricity,
the mounting surfaces remain blanked hardened steel. The only
surfaces in contact with the polymer will be coated.
As die drool appears on inside and outside surface of the extrudate,
Erocarb recommends the coating of both tip and die. Erocarb coating
is applicable on hardened steel but not on carbide.
Erocarb – Switzerland
Website:
OUR INTERWIRE 2013 SECTION
STARTS ON PAGE 52