EoW March 2013

News Technology

▲ ▲ The new generation of crosshead from Erocarb

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. . . . 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 SA – Switzerland Website : www.erocarb.ch

Erocarb – Switzerland Website : www.erocarb.ch

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March 2013