Arrangement for driving a planar substrate (4, 5) in a longitudinal direction, which arrangement is mounted in a packaging production machine, the substrate (4, 5) having a surface that has undergone at least one modification, said arrangement comprising: - means for driving the substrate (4, 5) in the longitudinal direction, and - means for pressing said substrate (4, 5) against the drive means, having at least one pressing region facing towards said drive means, and comprising - at least one rotary element forming all or part of the pressing region, and being a pressure roller having at least one protrusion defining the pressing region, the protrusion having a position and a transverse dimension which are selected according to a position and a transverse dimension of the modification, in order to avoid damaging said modification between said drive means and said pressing means, - at least one pressure member which pushes the rotary element against the drive means, - a structure to which the pressure member is fixed, and - two side levers which are capable of holding the rotary element and of pivoting relative to the structure and relative to the pressure member, said substrate (4, 5) being capable of being engaged and of being driven between said drive means and the pressing means, characterised in that said arrangement comprises two side flanges which are capable of receiving the roller and are mounted on a transverse rail which can move transversely in order to move the roller transversely into and out of the machine. - means for driving the substrate (4, 5) in the longitudinal direction, and - means for pressing said substrate (4, 5) against the drive means, having at least one pressing region facing towards said drive means, and comprising - at least one rotary element forming all or part of the pressing region, and being a pressure roller having at least one protrusion defining the pressing region, the protrusion having a position and a transverse dimension which are selected according to a position and a transverse dimension of the modification, in order to avoid damaging said modification between said drive means and said pressing means, - at least one pressure member which pushes the rotary element against the drive means, - a structure to which the pressure member is fixed, and - two side levers which are capable of holding the rotary element and of pivoting relative to the structure and relative to the pressure member, said substrate (4, 5) being capable of being engaged and of being driven between said drive means and the pressing means, characterised in that said arrangement comprises two side flanges which are capable of receiving the roller and are mounted on a transverse rail which can move transversely in order to move the roller transversely into and out of the machine. - at least one rotary element forming all or part of the pressing region, and being a pressure roller having at least one protrusion defining the pressing region, the protrusion having a position and a transverse dimension which are selected according to a position and a transverse dimension of the modification, in order to avoid damaging said modification between said drive means and said pressing means, - at least one pressure member which pushes the rotary element against the drive means, - a structure to which the pressure member is fixed, and - two side levers which are capable of holding the rotary element and of pivoting relative to the structure and relative to the pressure member,