Glass fibre & basalt
Basalt and glass fibres are produced similarly. The materials are also similar in terms of properties. They have one big difference, however: Basalt is a natural product, whereas glass fibres are produced artificially. They consist mainly of silicon dioxide, aluminium dioxide, magnesia, bromine trioxide and calcium oxide.
Basalt and glass fibres are drawn from a melt as ultra-fine filaments. Machines from Dietze+Schell pick up the fibres. Rovers and inline choppers are used most frequently at this stage. Rovers wrap the material, choppers chop the fibres. Chopped fibres from 3 to 50 millimetres in length are used for the production of plastics reinforced with glass fibres.