WCN Spring 2011

Pushing the limits with the RX 25T

The Rosendahl Crosshead RX 25T for foamed RF cable cores is designed to manufacture the complete RF cable range, from ¼" SF to 2¼" F. Its basic design consists of an oil heated crosshead with skin application which is equipped with an optimised temperature control to cover expansion rates of up to 86%. Two heating/ cooling zones on the crosshead, one for the main body, the second for the die holder, provide perfect temperature control and even temperature distribution of the polymer gas melt. Full natural balancing minimises the shear rates and provides smooth melt flow for perfect roundness, concentricity and mechanical stability. Superior manifold technology enables small formed cells and a very homogenous cell distribution at this high foaming degree. Temperature control, shear stress, pressure drop and flow speed optimisation in the crosshead are significant factors for

The RX 25T allows increases ▲ ▲ in productivity and cable performance

achieving higher foam expansion rates on the final cable, up to 86%.

Rosendahl Maschinen GmbH – Austria Fax : +43 3113 5100 59 Email : office@rosendahlaustria.com Website : www.rosendahlaustria.com Interwire stand : 432

This new design enables RF cable manufacturers to surpass limitations currently experienced with standard equipment.

Zumbach hits the road

Zumbach will again be exhibiting at both wire Russia and Interwire in May. On show will be the broad range of measurement and control systems for wire insulating and jacketing, wire drawing and rod mill applications. An extensive range of proven measurement solutions and the latest technological advances will be demonstrated. The company will be presenting the all new Speel 3000, a new length and speed measuring gauge, as well as Simaca surface quality inspection system. Other equipment including the Odaca ® laser diameter scanners; Wallmaster ultrasonic wall thickness measurement and control system; Odex ® laser/magnetic non-contact concentricity gauge; Zumbach/WST preheaters and temperature sensors; Profilemaster, a non-contact profile measurement systems, based on laser contouring and CCD camera vision and processing. A complete line of Windows-based software packages for many different functions, such as data logging, remote viewing, multi part measurement and many more, will also be on show, at Interwire booth 1540. In Russia at the end of the month, Zumbach will exhibit a selection of its broad range of measurement and control systems for wire insulating and jacketing, wire drawing and other applications in the wire and cable industry. Zumbach Electronic AG – Switzerland Fax : +41 32 356 0430 Email : sales@zumbach.ch Website : www.zumbach.com Interwire stand : 1540

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WCN Issue N° 44 www.iwma.org