Patent ID: 7444795

Claim:
A method for sealing-in a gas in a bag with a gas filling compartment, wherein: said method uses a bag with a gas filling compartment which is capable of having a gas sealed therein and is separated from a contents storing section, said bag being further formed, in surfaces of films that define the gas filling compartment, with a means for introducing gas for effecting communication between an inside of the gas filling compartment and an outside of said bag; and wherein, said method comprises the steps of: placing a blow-out port of a nozzle, which is connected to a pressurized gas supply source, against said means for introducing gas and supporting a back surface side of said bag with a backing member, blowing a gas from said nozzle into an inside of the gas filling compartment through said means for introducing gas, gripping a part near said means for introducing gas from both surfaces of said bag with a blocking gripper while the gas blow-in continues, thus cutting off a flow of gas between said means for introducing gas and an inside of the gas filling compartment, and sealing said means for introducing gas, thus allowing the gas to be sealed in the gas filling compartment.