Method of making form, fill, and seal bags

A method of forming an end seam on a bag comprising:

• pressing opposed sides of the bag together under heat and pressure at a temperature of less than 149° C. and a dwell time of no more than 0.1 seconds to form the end seam having a seam strength, in terms of breaking force, of at least 2.5 N, wherein the bag, including the pressed opposed sides, comprise at least two layers of a sheet material and at least one layer of an open mesh material;
• wherein the open mesh material has a mass per unit area of less than 30 g/m2 and comprises layers of individual filaments that intersect one another, at least some of the filaments being composite filaments having a carrier portion of a first melting point and a bonding portion of a second melting point that is lower than the first melting point, the bonding portion of each composite filament being thermally bonded to other filaments at at least some points of intersection.