Self-standing packing bag with spout

Abstract

In a self-standing packing bag with a spout of the present invention, a bottom section is formed by a bottom member that is half folded at a fold line and is attached to an inside of a lower portion of the trunk section such that the fold line faces upward, an extending direction of the fold line of the bottom section and a closing direction of an upper end of the trunk section intersect each other on a horizontal projection plane, and side end portions of two regions of the bottom member divided by the fold line are planarly bonded to an inside of the trunk section in an overlapping state.

What is claimed is: 
     
         1 . A self-standing packing bag with a spout comprising:
 a trunk section which is formed in a cylindrical shape and of which an upper end is closed;   a bottom section which is attached to a lower portion of the trunk section; and   a spout which is attached to an upper end of the trunk section,   wherein the bottom section is formed by a bottom member that is half folded at a fold line and is attached to an inside of the lower portion of the trunk section such that the fold line faces upward,   wherein an extending direction of the fold line of the bottom section and a closing direction of the upper end of the trunk section intersect each other on a horizontal projection plane, and   wherein side end portions of two regions of the bottom member divided by the fold line are planarly bonded to an inside of the trunk section in an overlapping state.   
     
     
         2 . The self-standing packing bag with the spout according to  claim 1 ,
 wherein the spout has a check valve function.