EoW July 2014

News Technology

▲ ▲ The loose tube line from Rosendahl

A new era in fibre optic production

Staff from Rosendahl and Nextrom teamed up for what they describe as a ‘ground-breaking’ moment in fibre optic cable production after they redesigned, rebuilt, tested and fine-tuned the results for the loose tube line. The current trends in fibre optic cable manufacturing are all connected to the general optimisation of each step of the production process. In order to improve cable performance and reduce the costs of the final product, many technologies and devices have been invented to minimise optical loss, increase production speed and allow more flexibility in the manufacturing process. New developments made especially for the loose tube process include: • Improved high speed fibre pay-off design with reduced footprint for space saving • Special processing unit of the ROEX extruder to optimise the process ability of typical material used for loose tube production • Optimised and space saving cooling trough design – safe up to 9.5m in line length • Better process feedback during production • Typical line speed 600m/min for standard loose tube types • New development of the crosshead series RX for optimised material flow in the melt distributor, in conjunction with a linear jelly needle guiding system for easier handling • New generation of pulley clenching capstan SCC100 for accurate post shrinkage and EFL control, especially for dry tubes • Improved online EFL measurement system Rosendahl – Austria Website : www.rosendahlaustria.com Nextrom OY – Finland Website : www.nextrom.com

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July 2014