LIQUID DISCHARGE METHOD

摘要

PROBLEM TO BE SOLVED: To enable quick discharge of liquid in a liquid storage bag without causing bubble entrainment and reduce a residual quantity of the liquid after discharge.SOLUTION: Liquid in a liquid storage bag 10 is discharged via a spout tube 16 by pressurizing the inside of a pressurization space 8. A pressurization process of pressurizing the inside of the pressurization space 8 has a first pressurization process of performing pressurization at a first pressure and a second pressurization process of performing pressurization at a second pressure which is lower than the first pressure. Transition from the first pressurization process to the second pressurization process is set at a time point which is longer than 77.5% of a time between start of discharge and occurrence of bubble entrainment in the case where pressurization is continued at the first pressure, and is shorter than 97.0% of the same.SELECTED DRAWING: Figure 1