By ‘lining’ tumbling drums with a polyurethane coating, it is possible to reduce noise levels and wear, for example.
Polyurethane is better suited to this than any other material thanks to its combination of wear resistance and sound-damping properties.
A tumbler is used, for example, to reshape stones from irregular to a more rounded shape. This can generate a great deal of noise, which can therefore be counteracted with a polyurethane coating.
