Liquid transport system and a liner bag and a method of using the same

A liquid transport system comprising an intermediate bulk container and a liner bag, wherein the intermediate bulk container comprises a base and a side wall mounted to the base, the base is provided with a valve port, the liner bag comprises a liner bag body and a discharge port, and the liner bag has a volume of more than 250 liters, wherein:

• the liner bag body is formed by hermetically welding a front panel and a rear panel along the periphery thereof, primary weld lines are formed along the entire periphery of the front panel and the rear panel of the liner bag body before the liner bag is filled, the discharge port is hermetically connected to the liner bag body, and a minimum distance between an edge of the discharge port and the closest primary weld line of the liner bag body is L, wherein 0≤L≤20 cm, or 0≤L≤0.1*D, where D is the minimum of lengths and widths of the front and rear panels;
• the liner bag is disposed in the intermediate bulk container and the discharge port of the liner bag is installed in the valve port;
• and
• the liner bag is arranged in such a manner that after the liner bag is filled, a vertical plane formed by all of the primary weld lines is perpendicular to the base, and the liner bag is also arranged in such a manner that after the liner bag is filled, the liner bag body is bilaterally symmetrical about the primary weld lines that form the plane.

A method for using a liner bag, comprising:

• providing a liner bag comprising a liner bag body, which is formed by hermetically welding a front panel and a rear panel along the periphery thereof, and primary weld lines are formed along the entire periphery of the front panel and the rear panel of the liner bag body before the liner bag is filled, wherein the liner bag has a volume of more than 250 liters;
• and a discharge port, which is hermetically connected to the liner bag body, and the minimum distance between an edge of the discharge port and the closest primary weld line of the liner bag body is L, wherein 0≤L≤20 cm, or 0≤L≤0.1*D, where D is the minimum of lengths and widths of the front and rear panels;
• placing the liner bag in an intermediate bulk container, wherein the intermediate bulk container comprises a base and a side wall mounted to the base, the base is provided with a valve port where the discharge port of the liner bag is installed;
• and
• arranging the liner bag in such a manner that after the liner bag is filled, a vertical plane formed by all of the primary weld lines is perpendicular to the base, and the liner bag is also arranged in such a manner that after the liner bag is filled, the liner bag body is bilaterally symmetrical about the primary weld lines that form the plane.