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Crosshead developments

RX45 with a ROEX extruder
RX45 with a ROEX extruder

The challenge in distributor design is to find the optimum dimensions of the distributor to attain a balanced flow at the exit. Rosendahl’s distributor concept is said to guarantee homogeneous material flow – independent of the processed materials and independent of the output. This optimised material flow provides high centricity and allows a reduction in average wall thickness and therefore reduces the manufacturing costs. With the help of the latest finite element simulation programmes, Rosendahl conducts mechanical calculations and rheological analysis of its crosshead series.

The simulation also enables analysis of pressure, temperature rise, velocity, stress and strain rate distributions over the entire simulation domain. Especially when designing the distributor, it is important to adapt the distributor’s channels to the flow path of the melt.

In order to offer a broad material spectra, Rosendahl partnered with university institutes to research a wide range of materials for the cable industry, and now offers a material data base that includes standard as well as special material (such as foamed material blends, LSOH or XLPE). Rosendahl’s ongoing communication with polymer manufacturers guarantees up-to-date technology. Rosendahl, as supplier of extruders, crossheads and of complete extrusion lines, is in a position to investigate and understand the polymer extrusion process.

The integrated simulation results, together with the experiential data, have enabled optimisation of the head design and ultimately to achieve a high quality of extrudate.

PUBLISHED: 06 Jul 09 Bookmark and Share
Company:
Rosendahl Nextrom GmbH
Visit Rosendahl Nextrom GmbHs website
Country:
Austria
Tel:
+43 3113 5100-0
Fax:
+43 3113 5100-59
Email:
office.austria@rosendahlnextrom.com
Website:
www.rosendahlnextrom.com
Other News from Rosendahl Nextrom GmbH:

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Extreme conditions require excellent cables
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PEEK extrusion line
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Rosendahl silicone extrusion line
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Rosendahl Nextrom at wire Russia 2015
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Rosendahl Nextrom opens new technology center in Pischelsdorf
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High performance X-ETFE extrusion
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Rosendahl & Nextrom at Interwire 2015
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Rosendahl & Nextrom - wire China 2014 Preview
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Loose Tube news: A new era just began
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ROEX Extruder Generation - maximum energy efficiency
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Successful Interwire for Rosendahl
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Rosendahl & Nextrom at wire Russia 2013
»
Rosendahl's new FOC multipass cooling trough for loose tube lines
»
Rosendahl and Nextron at Interwire 2013
»
Finished power cables by merging power SZ with sheathing
»
RX5 completes Rosendahl’s crosshead series RX, fit for single crosshead sales
»
Pushing the limits with the RX 25T for foamed RF Cable from Rosendahl
»
Payoff and take-up
»
Crosshead developments
»
Merging SZ with sheathing
»
Rosendahl - wire 2010 preview
»
Finished cables on one line
»
Intercable 2009
»
Advanced crosshead technology
»
Intercable Meeting Austria 2009
»
Crosshead developments
»
50 Years Innovation from Rosendahl
»
Rosendahl celebrates fifty years in the industry
»
“Most successful show in the group’s history!”
»
Efficient screening with SZ-technology
»
Solutions from Rosendahl and Nextrom


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