Concept

Plastic extrusion

Related publications (75)

Liquid-core capsules as a tool in biotransformations

The aim of this thesis was to develop a new type of liquid-core capsules obtained by co-extrusion using the laminar jet break-up technique. These capsules, composed of an organic phase as the core and a hydrogel membrane, were meant to be applied as an in- ...

EPFL2005

Processing of Hybrid Glass-Fibre Reinforced Thermoplastic Nanocomposites

John Christopher Plummer, Martyn Douglas Wakeman, Chrystèle Houphouet-Boigny Favre

The aim of this work is to integrate polypropylene/montmorillonite (MMT) nanocomposite matrices into conventional fibre-reinforced composites. Two types of composite have been considered: long fibre-reinforced composites from co-woven glass fibre and nanoc ...

2005

Replicated aluminium foam

Jean-François Despois

This thesis explores the processing and properties of microcellular aluminium-based materials produced by replication. It includes the development of a pressure infiltration process for net-shape component production, structural characterization of the foa ...

EPFL2005

Assessment of plastic flow and fracture properties with small specimen test techniques for IFMIF-designed specimens

Philippe Spätig, Nadine Baluc, Raul Alejandro Bonadé, Emiliano Campitelli

The primary mission of the international fusion material irradiation facility (IFMIF) is to generate a material database to be used for the design of various components, for the licensing and for the assessment of the safe operation of a demonstration fusi ...

2005

Fiber Orientation in Multilayer Tubes Processed by a Conical Extruder

A new extruder design has been developed for the coextrusion of two-layer annular sections. The extruder consists of a conical stator-rotor-stator assembly, which performs extrusion from each side of the rotor. Flow within this assembly is fully three-dime ...

2004

Contact compression of self-assembled nano- and micro-scale pyramid structures on Au (100) surface

Jian Wang, William Curtin

A process of self-assembly induced by electro-chemical etching was used to produce nano and micrometer scale pyramid-structures on (100) surfaces of gold. The pyramids grew in a self-similar fashion with the facets aligned in (114) plane. Using the unique ...

Materials Research Society2004

Surface Nanostructuring by Molecular Self-Assembly

Jürgen Brugger, Sivashankar Krishnamoorthy, Harry Heinzelmann, Raphaël Pugin

Two dimensionally ordered, monodisperse nanoparticle arrays of metals, metal oxides and possibly alloys can be obtained by using functional diblock copolymer micelles as templates. Tunability of the block copolymer micelle sizes and periodicities has been ...

2004

Modeling and Analysis of Helicoidal Flow in a Conical Extruder

The present paper discusses the uniqueflow behavior in a new type of extruder. The extruder design is based on a hollow conical assembly of static (stators) and rotating (rotor) parts. Extrusion is achieved from each side of the rotor to provide a two-laye ...

2003

Reaction injection pultrusion of PA12 composites: Process and modelling

Pierre-Etienne Bourban

The development of a reactive pultrusion process is presented by considering the advantages of an in situ polymerisation of thermoplastic lauryllactam monomers. The specifics of the reaction injection unit, of the fibre-drying oven and of different pultrus ...

2003

Essential work of fracture of polypropylene and polypropylene blends over a wide range of test speeds

John Christopher Plummer

The mechanical properties of extruded films of isotactic polypropylene (iPP) and ethylene-propylene rubber toughened iPP (iPP/EPR) have been analyzed in terms of the specific essential and non-essential work of fracture using high speed tensile test appara ...

2003

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