Basalt fibres are produced by melt spinning a mass of molten basalt heated to a temperature of 1400 °C. The diameters of the filaments obtained in this way are generally between 10–20 μm. Mainly used in fibre/plastic composites, basalt fibres are also used in areas such as filtration, horticulture and concrete reinforcement. To achieve better bonding to the plastic matrix in the field of fibre-reinforced materials, basalt fibres are often finished with a silane sizing.
After the raw basalt has been crushed and cleaned, it is melted at 1450 °C and, after pressing, drawn through nozzle holes into filaments with a diameter of 10–20 µm. The filaments are also finished with a silane sizing agent for better matrix adhesion. In the next process, the filaments are spun into yarn, combined into a roving or processed into short-cut fibres.
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State-of-the-art laboratory facilities, quality management according to ISO 9001:2015, energy management according to ISO 50001:2018 and last but not least the high demands on our own work ensure the high quality standards of our Basalt fibre. See for yourself.
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