PACKAGING BAG

摘要

A packaging bag, wherein a laminated film is folded up at two positions so that the end parts of the laminated film are butted to each other, the butted end parts are stuck to each other to form a cylindrical body, and an upper seal part and a lower seal part are fitted to the cylindrical body to seal the opening part of the upper part and the opening part of the lower part of the cylindrical body, the two positions (15) and (16) where the laminated film was folded up are formed as side edge parts forming boundaries between the front face part (2) and the rear face part (3) of the packaging bag, a rough surface unsealing part (10) formed of an assembly having a plurality of fine recessed parts formed in an outer layer forming the laminated film and a plurality of fine through-holes passed through the outer layer is provided on the upper seal part (5) at the front face part and/or the rear face part including the one side edge part, and the rough surface unsealing part (10) is provided within the range of the upper seal part (5) apart upward from the lower end edge of the upper seal part (5).