Bag with a gas filling compartment, method for manufacturing the same, method for sealing gas in the same and method for packaging the same

Abstract

A bag made of an outer bag 3 and an inner bag 2. The inner bag, inside the outer bag, has an opening in the upper edge, and the inner and outer bags are sealed along the upper edges, on either side of the respective bags, to form sealed portions 8 and 9, and the inner bag and outer bag are further sealed together at two lateral side edges and lower edge to form sealed portions 11 and 12 and sealed portion 13, thus forming gas filling compartments 14 and 15. Cut-ins 18 and 19 are formed in the upper comers of the outer bag, and supplemental sealed portions 16 and 17 connected to the sealed portions 8 and 9 are formed. Air (gas) is blown into the gas filling compartments 14 and 15 through the cut-ins and then the overall bag mouth including the cut-ins is sealed.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a bag with a gas filling compartment made of an inner bag and an outer bag having a gas filled in between the inner bag and the outer bag to protect the contents packaged inside the inner bag from shock or the like and also relates to a manufacturing method of such a bag and further to a gas filling method in such a bag and a packaging method for such a bag. [0003] 2. Description of the Related Art [0004] Bag with a gas filling compartment (or with an air bag) comprising an outer bag and an inner bag that is provided inside the outer bag, made so that a gas is filled in between the inner bag and the outer bag, are commonly known and disclosed in, for instance, Japanese Utility Model Application Laid-Open (Kokai) Nos. 64-2745 and 8-1398; Japanese Patent Application Laid-Open (Kokai) Nos. 64-84869, 2-98563 and 9-132213; and Japanese Patent Nos. 2800034 and 3015323 [0005] However, conve...

AI Technical Summary

Benefits of technology

[0068] With the use, using also a bag with a gas filling compartment made by the present invention, of the above-described gas seal-in method of the present invention, the process of sealing gas into a gas filling compartment (or an air bag), which has been done almost entirely manually, and the entire packaging process, which includes gas seal-in process, can be performed automatically and performed efficiently.

Problems solved by technology

However, conventional bag with a gas filling compartment does not have a structure suitable for automating the process of sealing gas into the bas filling spaces or for automating the entire packaging process including such a gas sealing process, and the gas sealing process disclosed in, for instance, Japanese Utility Model Application Laid-Open (Kokai) 8-1398 is also not suitable for being automated.

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