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5. Moulding of mass-produced parts
These processes are designed to produce 500 to 1,500 parts per day, finished directly on the moulding line.
Thermoplastic composites reinforced with continuous fibers in the form of woven fabric, chopped strand mat, and UD (unidirectional) or directionalized grids cannot be processed by thermocompression, or by co-molding with a natural or non-flowable composite material.
5.1 Thermocompression molding
This process is used for both stampable thermoplastic sheets and wood stock (polypropylene sheet filled with sawdust). It involves compressing hot sheet at pressures of up to 150-300 bar to fill the mold by flow. The difference between thermo-stamping and wood stock lies in the molding pressures used and the part thicknesses, which are...
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Moulding of mass-produced parts
Economic data
Table 1 shows the comparative values and costs of the various TP composite product families.
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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