Abstract: The process consists in inserting into a mould (1) a metal insert (4) having ends (4a) spaced from each other, in injecting plastic material in a fluid state into the mould (1) to form a shaped body (7) incorporating the metal insert (4), and in providing at the ends (4a) modified areas (9) without plastic material, to permit shrinkage of the shaped body (7) being formed without generating combined bending and compressive stress on the metal insert (4). The mould comprises a moulding cavity (3) designed to house a metal insert (4) having ends (4a) spaced from each other, devices (5) for injecting plastic material into the moulding cavity (3) to produce a shaped body (7) incorporating the metal insert (4), and operating devices (8) designed to define at the ends (4a) of the metal insert (4) modified areas (9) without plastic material.

Abstract: Disclosed is a tile for covering roofs, produced in material with a polymer matrix (7) comprising a mineral charge (8) provided in a quantity ranging from 20% and 60% in weight, with respect to the total weight of the tile, the mineral charge being chosen from calcium carbonate, talc, barium sulphate, clay, and the tile having dimensions and thicknesses substantially identical to those of conventional tiles such as, selectively, Portuguese tiles, Marseilles tiles and curved tiles, and preferably being provided joined to similar tiles, in a way suitable to define a multiple tile.