Forming unit and method for forming a container and packing apparatus with such a forming unit

A forming unit for forming a container from a blank of said container, comprising:

• a conveyor, and
• at least one equipment secured to said conveyor, said equipment comprising at least one forming device configured to move with continuous movement and arranged to form a container from said blank during a predetermined forming path on said conveyor,
• wherein said at least one forming device comprises a piston configured to engage with said blank and to move said blank along a predefined trajectory inside a seat, the seat being configured to cooperate with said piston to form said container from said blank,
• wherein said at least one forming device further comprises a motor element for moving said piston along said predefined trajectory and identify at least:
• an upper position identifying a maximum spacing of said piston from said seat,
• a forming start position of said blank, wherein said piston engages with said blank at an abutment panel of said blank outside said seat, with a predetermined minimum spacing from said seat, and
• a forming end position of said blank, wherein said piston is at least partially inserted inside said seat to fold said blank in said seat under pressure of said piston in order to form said container, and
• wherein said motor element is controlled independently with respect to said conveyor so that said motor element moves said piston until said piston completes the forming of said blank even in case of said conveyor stopping.