Machine and process for forming layers of products

8) Process for layering packaged or unpackaged products (CP) possibly contained in bags(S) each containing a predetermined number of products (CP), comprising an optional step of bagging the products (CP) by means of a bagging machine equipped with bagging means that can be activated and deactivated with which said bags(S) can possibly be formed, a step of picking up the products (CP) or bags(S) on an exit side (CP) of said bagging means by respective gripping means (4), a subsequent step of transport of the products (CP) or bags(S) up to an area (3C) for deposition of the products (CP) or bags(S) in which the gripping means (4) form a layering composed of more layers of products (CP) or bags(S) placing each product or bag in a respective pre-established position and oriented according to a direction which is also pre-established, the transport of the products or bags by the gripping means (4) being carried out along selectively predefined trajectories for each of the products (CP) or bags(S), said gripping means (4) and the area (3C) for deposition of the products (CP) or bags(S) being arranged in the same station on said exit side such that in said station said gripping means (4) provide both for the movement and orientation of the products (CP) or bags(S), and for the formation of said layers on said deposition area.