Apparatus and method for pressing a cover onto a moving printing material block

A method for pressing a cover onto a printing material block, the method which comprises:

• moving the printing material block in a transport direction;
• with a first pressing element mounted for movement in a first direction, pressing the cover onto the printing material block;
• with at least one second pressing element mounted for movement in a second direction substantially transverse to the first direction, pressing the cover onto the printing material block, and thereby controlling the movement in the second direction as a function of a variable control profile, the variable control adapting a path profile of the movement, the variable control profile setting an entry width of said at least one second pressing element in a first phase of lateral pressing and the variable control profile controlling a movement of the at least one second pressing element during a second phase of lateral pressing defined by an actual pressing of cover on the block.