Method for the manufacture of an anti-slippery running surface in a structure of vehicle bodywork

A method for the manufacture of an anti-slippery running surface in a structure of vehicle bodywork, comprising the steps of: a) providing a multi-layer structure comprising: an upper metal perforated plate (1), comprising a number of through-holes (4) having an elevated contour with respect to the plate surface; an intermediate layer of thermoplastic material (2); a lower structural rigid component (3) of the bodywork; b) thermally welding the upper perforated plate with the lower structural component through the intermediate layer of thermoplastic material.