Patent ID: 7322918

Claim:
A method for manufacturing a flexible container, comprising the steps of: forming a flexible film into a cylindrical form and fabricating therefrom a cylindrical member which is formed into a tapered cylindrical shape decreasing in diameter at a first end side; a bottom plate member is caused to face an opening at a second end side of the cylindrical member, and the bottom plate member is inserted into the first end side of the cylindrical member by relative movement of the cylindrical member and the bottom plate member, thereby fitting the bottom plate member to the first end section of the cylindrical member; fitting a bottom plate member which is harder than the flexible film into the inner side of a first end section of said cylindrical member and fuse-bonding same airtightly, and fitting a ring member which is harder than the flexible film into the inner side of a second end section of the cylindrical member and fuse-bonding same airtightly.