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ABSTRACT
The implementation processes of thermoplastic composites directly depend on the commercial presentation of the CLFT composites (continuous fiber composites) and the existing transformation processes for reinforced thermosetting composites and SFT( Short Fiber Thermoplastic) composites. The objective of the transformation of a CLFT (Continuous Long Fiber Thermoplastic) into a manufactured object is to preserve the continuity of the fibrous reinforcement whilst maintaining the full reinforcing effect of the fiber and minimizing shear stresses on the processed material.
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Read the articleAUTHORS
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Paul LUCAS: ITECH engineer - Head of R & D Twintex Saint-Gobain Vetrotex International
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Guy ZANELLA: Plastics Engineer - Former Twintex Applications Workshop Manager® Vetrotex Saint-Gobain
INTRODUCTION
The processing of thermoplastic composites is directly dependent on the commercial presentation of CLFT composites (continuous fiber composites) and on the existing transformation processes for TDA (reinforced thermoset) and SFT (short fiber thermoplastic) composites in small, medium and large production runs.
The aim of transforming a CLFT (Continuous Long Fiber Thermoplastic) into a manufactured object is to preserve the continuity of the fibrous reinforcement, while retaining the full reinforcing effect of the fiber right through to the part by minimizing shear forces on the transformation material (use guiding and friction systems with a roughness of less than 1 µm and a sliding coefficient close to that of polished ceramic or 800-polished brass alloy).
For useful abbreviations, please refer to the introduction to the dossier. .
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Bibliography
SGVI and SGVR conferences
Trainee reports St-Gobain Vetrotex International
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Technical documentaries and exhibitions (Europlastique Paris, Plast Milan, Kunstoff Dusseldorf)
Coperion Wernet http://www.coperion.com/
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Standardization
Association Française de Normalisation AFNOR http://www.afnor.org
- Plastiques - Détermination des propriétés en flexion. - NF EN ISO 178 - 05-03
- Plastiques - Détermination des propriétés en flexion - Amendement 1 : déclaration de fidélité. - NF EN ISO 178/A1 - 07-05
- Plastiques - Détermination de la résistance au choc Charpy...
DLFT machine suppliers
(Non-exhaustive list)
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Extrusion-compression
CPI Composite Products Inc. http://www.compositeproducts.com
Dieffenbacher http://www.dieffenbacher.de
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