Surfboard and method for its production

摘要

The sub-assembly comprises a hollow inner shell (7) made from resin-impregnated fibres with optional reinforcement or support, covered with a layer (8) of a high-density foam which can be reinforced locally by a plastic or cardboard honeycomb structure. The shell has a wall thickness of 0.1 - 2 mm; the foam has a density of 50 - 70 kg/cu m and is 3 - 20mm thick.