This popular bag solution on the market – the SOS (Self Opening Square or Block Bottom) Bag – is available in any material combinations and with various features. To optimally preserve the product, Mondi’s packaging solutions are available with a film liner, PE-coated inner ply, or grease-proof paper. The bag is supplied with a steped end and pre-applied hot melt for easy closing once the bag is filled.



  • Full-surface print on bottom
  • Attractive appearance with additional gloss features
  • Environmentally friendly, sustainable packaging
  • Suitable for automated fill-and-seal machines


Printing Technology

Up to 8-color flexo printing

Color Printing

Up to 8-color printing, plus optional coating

Number of Plies

2 to 4

Basis Weight

20 lb. to 70 lb.

Water Vapor Transmission

PE-coated paper or films available for additional barrier protection


9 in to 18 in


20 in to 39 in


4.5 in to 10 in

This bag is suitable for food and non-food products.  A Mondi representative can provide the specific regulatory compliances.


SOS (Block Bottom) Bags are the ideal packaging solution for a broad range of applications, including pet food and pet care, farming and agriculture, as well as building and construction material packaging.