Advanced crosshead technology

PUBLISHED: 07 Oct 09

Rosendahl RX45 with a ROEX extruder
Rosendahl 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 cross-head 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 database that includes standard as well as special material (such as foamed material blends, LSOH or XLPE).

Rosendahl’s ongoing communication with polymer manufacturers ensures that all technology is completely up to date. 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.

Rosendahl Nextrom GmbH, Austria
Tel: + 43 3113 5100-0

More news from this company:
Rosendahl improves their crosshead RX 5 for Loose Tube production
Rosendahl proudly presents their new color-recognition sensor system
Rosendahl's SmartCall
Rosendahl's Smart line control system: RIO
Improved SZ-Stranding of fiber optic cables
Automotive wires - just-in-time and smart
Universal solution for building wire production
Extreme conditions require excellent cables
PEEK extrusion line
Rosendahl silicone extrusion line
Rosendahl Nextrom at wire Russia 2015
Rosendahl Nextrom opens new technology center in Pischelsdorf
High performance X-ETFE extrusion
Rosendahl & Nextrom at Interwire 2015
Rosendahl & Nextrom - wire China 2014 Preview