Side airbag for vehicles and method for folding a side airbag

A method for folding a side airbag, comprising:

• connecting a first material layer and a second material layer along a first edge portion by a first seam such as to bound at least in part a chamber;
• connecting the first and second material layers along second edge portions by a closed second seam in perpendicular relation to the first seam to bound the chamber in addition to the first seam;
• placing the two material layers flat upon one another;
• slipping a region of the second seam in a first direction inwards while forming a tip;
• folding an end of the first and second material layers in opposition to the tip several times in the first direction;
• folding over the tip thereby creating a folded-over portion, and slipping the folded-over portion in the first direction inwardly;
• inserting a gas generator in the first direction into the two material layers;
• and
• roll folding from an end in opposition to the gas generator in a second direction in transverse relation to the first direction,
• wherein after the side airbag has been installed in a vehicle and fully inflated, the second seam extends in a transverse direction of the vehicle.