Patent ID: 9630759
Date: 2017-04-25
CPC Classifications: B31B,B65D

Claim:
1. A gusset bag comprising: a pair of flat surface portions facing each other; and a pair of side surface portions facing each other which are folded toward an inside thereof, wherein a containing portion to contain an object is formed using the pair of flat surface portions and the pair of side surface portions, wherein the gusset bag has a side edge sealing portion in which a flat surface portion and a side surface portion are heat-sealed together at side edge portions thereof, and a folded-back portion in which the entire side edge sealing portion is folded back and affixed to the flat surface portion which forms the containing portion, wherein lower portions of the pair of flat surface portions and of the pair of side surface portions are configured to form a bottom surface of the gusset bag by being bent toward the inside, wherein a first flat surface portion and the pair of side surface portions are formed of a first film member, and a second flat surface portion is formed of a second film member, wherein side edge portions of the side surface portions opposite to the first flat surface portion formed of the first film member and side edge portions of the second flat surface portion are heat-sealed together to form two side edge sealing portions, wherein the first flat surface portion is configured to be a front surface of the gusset bag, and the second flat surface portion is configured to be a rear surface of the gusset bag, wherein both surfaces of the second film member are capable of being heat-sealed, and the two side edge sealing portions are heat-sealed to the second flat surface portion which forms the containing portion, and wherein the front surface of the gusset bag does not have a side edge sealing portion.