Christian Schlummer & Rolf Heusser
Posters # 2012 Barcelona
Polymer raw material costs for plastic pipe producers count for up to 80% of the total production costs. For non-pressure sewerage pipe application, one way to significantly reduce raw material consumption is to produce foam core multilayer pipes instead of solid wall products. A new development now allows to retrofit existing conventional extruder for PP foamcore pipe production using eco-friendly atmospheric gases.
Related papers
Author(s) : Christian Schalich
Plastic pipes for infrastructure and building applications are precisely specified with regards to wall thickness and diameter. Pipe manufacturers use different measuring methods in order to ensure the required dimensional accuracy and maintain a constant high quality. This paper introduces a measuring system based on...
Author(s) : Christian Schalich
This paper introduces a new technology based on millimeter waves. It provides a noncontact, non-destructive, online measurement of inner and outer diameter, ovality, wall thicknesses, and sagging (sagging of the melt during solidification at a too high viscosity) of large plastic pipes during the extrusion...
Author(s) : Christian Tischler, Markus Haager, Thomas R. Kratochvilla, Heinz Muschik, Heinz Dragaun
The static test method of the Notched Ring Test (NRT) is compared with a fatigue testing method of Cracked Round Bar (CRB). Both methods are candidates for the classification of polyethylene (PE) materials with high resistance against Slow Crack Growth (SCG). In this paper tests of two PE 100 and two PE 100-RC...
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