For plastics, the moulds are generally made of steel, quenched and tempered and/or heat-treated for large-scale production.
Pilot moulds for small productions runs, generally of several tens of thousands of pieces, are made of aluminium.
The main advantages of steel dies for plastic injection are:
Possibility of making parts with complex geometries
Low production cost per part
High process automation
Possibility of producing very small parts
The moulds can be used with plastic materials of different types and properties
Possibility of moulding in combination with metal inserts
Production of products with different colours
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