Apparatus for shaping and/or sealing a package unit

摘要

The machine for making a side folded packaging tube or closing such a preformed tube which forms a bulk goods sack. The machine has a welder (2) and a feed for positioning the welded tube material. The welder is an ultrasound welder with an anvil (4) and a ultrasound head (3) which are relatively movable. The anvil and head have a continuous surface.