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1. Different types of molds
1.1 Principle
Polymer injection molding relies on temperature-dependent changes in polymer properties: in the press barrel, molten polymers are viscoelastic, compressible fluids, and are transferred in this state to the mold cavities.
The mold is maintained at a temperature below the glass transition temperature T g for amorphous polymers and below the crystallization temperature T c for crystalline polymers. In the mold, the polymer temperature falls below T g for amorphous polymers and below T c for crystalline polymers: the polymer enters the solid state.
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Different types of molds
Injection cycle and problems encountered
Bibliography
Software tools
CADMOULD http://www.cadflow.fr/
Moldflow http://www.moldflow.com/
Simpoe http://www.simpoe.com/
Events
Forum International de la Plasturgie, takes place every three years in Lyon : http://www.f-i-p.com
K– Messe, Europe's leading plastics trade fair, is held every three years in Düsseldorf: http://www.k-online.de
Standards and norms
- Moulding tools – Thermal insulation foils in injection molds - NF ISO 15600 - Avril 2001
- Moulding tools – Tool specification form for injection molds - NF ISO 16916 - Août 2004
- Moulding tools – Injection nozzles – Dimensions - NF ISO 10072 - Mai 2004
- Moulding tools – Bracing pillars - NF ISO 10073 - Février 2009
- Moulding tools – Cylindrical-head ejectors - NF ISO 6751 - Avril 1999 ...
Directory
Cumsa http://www.cumsa.com
DME-EOC http://www.dmeeu.com
Dynisco http://www.dynisco.com
EPA http://www....
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