A process for producing a flexible container is provided and includes: A. providing a rear panel web, a front panel web, a first folded gusset panel web, and a second folded gusset panel web, each panel web having peripheral edges and a bottom face, each bottom face having two opposing tapered edges meeting at a bottom end; B. placing the folded gusset panel webs between the rear panel web and the front panel web, the gusset panel webs opposing each other, the panel webs configured to form a common periphery and the bottom seal area including the bottom end of each panel; C. first sealing the peripheral edges, the tapered edges, and the bottom seal area under a set of heat seal conditions; D. second sealing a portion of the bottom seal area under a second heat seal condition; and E. forming a flexible container.