Method and device for forming a fold in an overwrapping film

An apparatus for producing a filmic packaging material having a continuously folded portion, comprising

• a first component comprising a protruding part;
• a first roller rollable about a longitudinal axis thereof, wherein the first roller is provided with a recess on an outer surface thereof for receiving the protruding part of the first component;
• a drive mechanism for moving the filmic packaging material along a path in a manner such that a continuous portion of the filmic packaging material is drawn into the recess of the first roller by the protruding part of the first component such that the continuous portion of the filmic packaging material is folded, forming a continuously folded portion having an overlapping surface due to the arrangement of the protruding part of the first component in relation to the recess of the first roller;
• and
• a bonding component provided downstream of the first roller arranged to adhere together the overlapping surface of the continuously folded portion of the filmic packaging material,
• wherein the protruding part is provided in a wedge shape arranged tilted towards one side, wherein the protruding part of the first component is receivable by the recess of the first roller having a complimentary shape to the protruding part so as to allow the formation of the continuously folded portion of the filmic packaging material.