Bag closure applying unit and bag closure device with such bag closure applying unit

A bag closure applying unit for attaching a bag closure to a bag, the bag closure applying unit comprising:

• an elongated housing having a first end and a second end, opposite to the first end, and a guiding channel extending between the first end and the second end and ending at or in a dispensing position for dispensing a bag closure, wherein the guiding channel is configured for receiving a strip of bag closures;
• and
• a moving mechanism configured for engaging the strip of bag closures and for moving the strip of bag closures through the guiding channel towards the dispensing position,
• wherein the moving mechanism comprises an engaging arm for engaging the strip of bag closures,
• wherein the engaging arm is configured to engage the strip of bag closures at an outer contact surface provided on a perimeter of a longitudinal side of the strip of bag closures.