Abstract: A method of manufacturing a self-opening style bag is disclosed, as well as a bag manufactured via the method, where the bottom of the bag has been sealed via application of a hot melt adhesive during in-line bag manufacturing. The disclosure further includes an SOS bag, including a multi-layered SOS bag, having a front panel, a back panel, and a pair of gussets joining the front and back panels, where the SOS bag has been sealed at the bottom via a hot melt adhesive. In an embodiment, the seal is effected via application of adhesive on a front flap and a back flap, and a folding of the front flap and the back flap together to complete the bottom of the bag.