To provide a self-standing bag which is three-dimensional in shape, excellent in appearance, provided with a spout excellent in openability and shape holding property, and suitable for a refill bag.
The self-standing bag 100 is provided with upper and lower gussets 3 and 2, and sealed by body seal parts 6 and 6 having both sides in narrow width with a tapered upper portion, the length of a folding film of the upper gusset 3 is smaller than that of a folding film of the lower gusset 2, a projecting portion 11 with both sides and an upper edge heat-sealed is extended over the whole upper side of one (forward) pleat part of the forward and rear pleats of the upper gusset 3, a cutting line 13 for a spout is provided in an upper corner, notches 14 and 14 are provided on both ends thereof, another pleat is heat-sealed at a back side seal part 8 of the upper gusset with the inner side of obtuse, inverted V-shape, and the lower gusset 2 is heat-sealed at a ship-bottomlike bottom seal part 5.
SHIMIZU MASAFUMI
OTSUKA YASUSHI
SUGIMOTO NANA
MASUDA KENICHI
OKADA TAKAO
