FILLER OF FOAMABLE THERMOPLASTIC MATERIAL AND METHOD AND APPARATUS FOR MAKING IT

摘要

1. Thermoplastic foam filling particle having a concave face (3) and a convex face (2) connected along a closed line and which have a skin incorporating closed cells, characterized in that it is shaped like a substantially oval saucer, whereof one side (6) corresponding to the largest dimension is curved towards the centre of the concave surface.