Packaging bag

Abstract

The present invention provides a packaging bag that is free from leakage of atmosphere conditioner from its supply section, manufacturable at reduced cost and by simplified manufacturing processes, and useable under high temperature conditions. The packaging bag has an upper end portion serving as a supply section from which the atmosphere conditioner is supplied. The upper end portion is formed such that a position of an end portion of a front side of a packaging material and a position of an end portion of a back side of the packaging material are shifted from each other, and a relatively protruding end portion is folded and welded onto an outer surface of the other end portion.

1 . A packaging bag containing an atmosphere conditioner, comprising:
 a supply section from which the atmosphere conditioner is supplied,   wherein the supply section is formed such that a position of an end portion of a front side of a packaging material and a position of an end portion of a back side of the packaging material are shifted from each other and a relatively protruding end portion is folded and welded onto an outer surface of the other end portion.   
     
     
         2 . The packaging bag according to  claim 1 , wherein an opposing part that opposes the supply section is formed by folding the packaging material. 
     
     
         3 . The packaging bag according to  claim 1 , wherein the end portions of the front and back sides of the packaging material, whose positions are shifted from each other at the supply section, are each constituted by a plurality of layers made of different materials, and an inner layer of the protruding end portion and an outer layer of the other end portion, which are made of different materials, are welded together. 
     
     
         4 . The packaging bag according to  claim 2 , wherein the end portions of the front and back sides of the packaging material, whose positions are shifted from each other at the supply section, are each constituted by a plurality of layers made of different materials, and an inner layer of the protruding end portion and an outer layer of the other end portion, which are made of different materials, are welded together.