Abstract: A packaging machine includes a pair of sealing members, a cutting device and a switching unit. The sealing members are configured to selectively seal a cylindrical packing material that extends therebetween. The cutting device includes a pressing member arranged on one of the pair of sealing members and a receiving member arranged on the other of the pair of sealing members. The cutting device is configured to selectively press the pressing member against the receiving member to melt and cut the cylindrical packaging material by heat and pressure. The switching unit is configured to switch the pressing member between a pressing state and a non-pressing state with respect to the receiving member when the sealing members are pressed together. The stopping unit is configured to selectively stop the pressing member from retracting from the pressing state with respect to the receiving member.