Patent ID: 6046443
Filing Date: 2000-04-04
Classification: B65D,Y10S

Abstract:
A bag of tubular construction having at least one closed end, comprising:opposed front and back walls of substantially rectangular shape and having top and bottom ends and opposite side edges;opposed gusseted side walls joined along longitudinal fold lines to the opposite side edges of the front and back walls, defining a tubular structure, said side walls each having a longitudinal medial gusset fold therein defining a pair of gusset panels that overlie one another between the front and back walls when the bag is folded flat, with the medial gusset folds of the opposed side walls being disposed between the front and back walls and in spaced apart relationship to one another, said gusseted side walls being expandable about the folds therein to enlarge the interior volume of the bag;a transverse band of adhesive extending across at least one end of the bag on an interior surface thereof to secure the front and back walls to adjacent gusset side panels when the bag is folded and pressed together during manufacture, defining a bag end closure that closes and seals the end of the bag;said medial gusset folds extending through the bag end closure, defining a step or transition in thickness where the medial gusset folds intersect the bag end closure; anda small field of sealant material at the intersection of the medial gusset folds and the bag end closure to seal and close any space that may result from the transition in thickness or step occurring at that location, thereby avoiding leakage of material from the interior of the bag through the bag end closure.