The sustainable use of secondary containers such as drums, hobbocks or buckets is becoming increasingly important in the industry. The containers are lined with inliners, so-called round bottom bags, which by their shape fit the round containers. The cleaning effort for the containers is thus significantly reduced and the containers can be used several times. Mono films made of polyethylene are ideally suited for this purpose due to their very good recycling properties. Reason enough for Rhein-Plast -in cooperation with its sister companies- to now also offer this type of packaging.