The present invention relates to triangular closed flexible sachets (100), and methods of manufacturing a triangular closed flexible sachet holding a substance comprises folding upon itself at least a single flexible sheet (200) to form a triangular interior space, filling the triangular interior space with the substance, welding the at least single folded sheet along a plurality of welding lines so as to capture the substance in said interior space, and sealing the closed flexible sachet (100). The invention further relates to methods of folding, displaying and/or storing a chain of sachets and a hanging device for a chain of sachets.
