Papers
Plastic Pipes Conference Association # 2010 Vancouver
Edward Raymond, Holger Mueller
PVC-u, Calcium Carbonate, Direct Addition, Dry Blend Mixing Usually, PVC and additives are processed in a hot / cold mixer to yield a dry blend which is conveyed pneumatically to silos for intermediate storage. During the transfer process, the PVC and calcium carbonate can separate at high loading levels. This can lead to unstable extrusion behaviour, varying mechanical properties, and visible pipe defects. Direct Addition technology adds the calcium carbonate to the rigid PVC dry blend with a unique mixer immediately before the extruder feed throat. The addition of the carbonate with this technology eliminates the costly problems that can manifest from compound segregation.
Related papers
Author(s) : Drew Mueller, Peter Dyke
HDPE Pipe holds a dominant position in several markets in North America: natural gas distribution, oil patch, mining, landfill and geothermal. So why are polyethylene’s municipal water and wastewater market shares so much lower than these other industries? How has the polyethylene industry been successful in growing...
Author(s) : Dr. Holger Brüning, Serge Hascoët, Yann Delanne, Didier Nozahic, Jawdat Mansour, José Santana
RTE operates, maintains and develops the French electricity network, including the High and very High Voltage cable lines. Their network is the largest in Europe and includes over 6400 km of underground HV links operated in 2018. The company is modernizing and developing its network by investing 1.5 billion euros per...
Author(s) : Edward Alan Ambler, John Matthews, Lawrence Pultz, Ryan Stowe
This paper summarizes the design and implementation of the largest asbestos cement pipe bursting project performed to date within the United States. The paper also presents regulatory information required to properly track and document an asbestos cement pipe bursting project while meeting the National Emissions...
Author(s) : Dr. Holger Bruening, Detlef Schramm
Applications at elevated temperatures like cable conduit pipes for high voltage cables, pipelines used in oil industry or in industrial plants offer new possibilities for PE but additional requirements in such applications have to be taken into account. Long term experience in using PE100 pipes with respect to easy...
Author(s) : Edward Ingham, Mike Shepherd
Exova has previously demonstrated that under normal operating conditions PE 100 pipes would be expected to have a lifetime of over 200 years, but in the UK concerns have been reported about relatively high failure rates within the water utilities of fusion joints, particularly for large diameter pipes. For some time,...
Author(s) : Sonya Pemberton, David Chrystie-Lowe, Sabah Rafiq, Karolina Modelska, Edward Ingham
A room temperature tensile test using thin films taken from the outside and inside surface of polymer pipes has been developed to study the slow crack growth resistance of ageing PE pipelines via analysis of their strain hardening behaviour. A range of PE materials in service since the early 1970s and 80s are...
Author(s) : Gaube, Mueller
In the mid-sixties the application of plastics pipes for sewerage and drainage was beginning. At the same time we have started special tests to measure the deformation of HDPE-pipes under the load of different kinds of soil: sand and shluff. It will be reported about the newest results. The use of Hostalen GM 5010...
Author(s) : Mueller
Pioneering work on plastics pipe made from thermoplastic polymers began in 1928 following the production on the technical scale of the first few tonnes of polyvinyl chloride, and later in 1935 with the commencement of the production of low density polyethylene. The first service evaluations on the product and its...
Author(s) : Mueller
Author(s) : Gaube, Mueller
Members of the Association
