PERFORATED LAMINATE

摘要

The invention relates to a perforated thermoplastic structure comprising at least a first layer (8) and a large number of perforations, which extend through the first layer (8). The perforations have a three-dimensional, preferably approximately conical or cylindrical shape (18). The second layer forms an interior surface (20) of the shape (18), whilst the first layer forms an exterior surface (21) of the shape (18). The first layer contains a thermoplastic material, whose melting point is lower than the melting point of the thermoplastic material of the second layer.