A method of manufacturing of sacks

The invention relates to a method for the manufacture of bags (10), comprising the steps of: - providing a tubular material (100) comprising a coating material (110) and at least one reinforcing member (120) for mechanical reinforcement of the coating material (110) - forming a bottom portion (20) of a bag (10), characterized in that for forming the bottom portion (20) - a folded portion (102) of hose material (100) is folded over at least 180 ° on a connecting portion (104) of the tubing (100) and - the folded folding section (102) is connected to the connecting portion (104).