ABOUT THE OUTER SHELL
The production of the outer shell for Nolan helmets occurs trough LEXAN™* polycarbonate injection moulding process. LEXAN™* is a material ensuring, for the same shape, thickness and process, higher performance compared to ABS, the raw material used for the moulding of almost all motorbike helmets on the market. The polycarbonate provides superior performance in both mechanical and thermal terms: during impact resistance tests, the polycarbonate obtained results of 900/1000 J/m, compared to the maximum results of 550/600 J/m for ABS. Furthermore, the thermal range of the polycarbonate is between -30°C to +120°C compared to a range of -20°C to +50°C for ABS. At 80°C (the temperature that the helmet may be required to endure in the summer, closed in a pannier), the polycarbonate remains stable, while ABS undergoes deformation; at 100°C, LEXAN™* still maintains its dimensional stability, while ABS deforms completely. The same test carried out at -20°C shows how LEXAN™* does not suffer cracks at harsh temperatures, while ABS becomes very fragile.
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