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Truly international membership currently comprising 13 member companies: Borealis, Borouge, FPC, INEOS O&P, IRPC, Korea Petrochemical IND. Co., LTD, lyondellBasell, PetroChina Dushanzi Petrochemical Company, Prime Polymer, SABIC, SCG & Thai Polyethylene, Sinopec, and Tasnee.

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Direct Addition of Calcium Carbonate Novel and Superior Technology to the Classical Rigid PVC Dry Blend Mixing Process

Edward Raymond, Holger Mueller

Papers # 2010 Vancouver

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.

Please note that the whole article content is available on PPCA website only

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...

2016 Berlin : Polyethylene used in industrial applications at elevated temperatures

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...

2014 Chicago : A Training and Certification Standard for Fusion Welding of PE Pipes

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,...

2014 Chicago : Development of a Slow Crack Growth Resistance (Strain Hardening) Test for Assessment of Ageing PE Pipeline Materials

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 studied,...

1982 York : 13 years of deformation measurement on HDPE- (Hostalen GM 5010) sewer pipe

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 for...

1974 Southampton : Development for polymers in pipemaking

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...

Direct Addition of Calcium Carbonate

Author(s) : Mueller

Crack Propagation in PE Pipes

Author(s) : Gaube, Mueller