A packaged article comprising: a packing bag including a welded portion that hermetically seals a container compartment, the welded portion is formed by overlapping and welding a base member (12a, 12b) along a folded side and a fluid content contained in the container compartment, wherein the welded portion includes a weak sealant section configured so that the overlapped base member (12a, 12b) is parted at the weak sealant section when the container compartment is pressed to communicate the container compartment and the exterior of the packing bag, and a strong sealant section configured so that the strong sealant section of the base member (12a, 12b) maintains a welded state at the time when the weak sealant section is parted, the container compartment includes a primary container section and a secondary container section, the secondary container section includes a narrow neck that is narrower than the primary container section in a width-wise direction, which corresponds to a direction in which the weak sealant section extends, the secondary container section is in communication with the primary container section at the narrow neck, the secondary container section is located adjacent to the weak sealant section, characterized in that the packing bag further includes an inlet, into which the content flows from the container compartment, wherein the inlet includes a flow passage, through which the content flows, and an opening, configured to discharge the content out of the packing bag, wherein the flow passage is located between a longitudinal sealant section of the strong sealant portion and the folded side at the downstream side of the weak sealant section, and wherein the flow passage and the container compartment are defined by the weak sealant section. a packing bag including a welded portion that hermetically seals a container compartment, the welded portion is formed by overlapping and welding a base member (12a, 12b) along a folded side and a fluid content contained in the container compartment, wherein the welded portion includes a weak sealant section configured so that the overlapped base member (12a, 12b) is parted at the weak sealant section when the container compartment is pressed to communicate the container compartment and the exterior of the packing bag, and a strong sealant section configured so that the strong sealant section of the base member (12a, 12b) maintains a welded state at the time when the weak sealant section is parted, a weak sealant section configured so that the overlapped base member (12a, 12b) is parted at the weak sealant section when the container compartment is pressed to communicate the container compartment and the exterior of the packing bag, and a strong sealant section configured so that the strong sealant section of the base member (12a, 12b) maintains a welded state at the time when the weak sealant section is parted, the container compartment includes a primary container section and a secondary container section, the secondary container section includes a narrow neck that is narrower than the primary container section in a width-wise direction, which corresponds to a direction in which the weak sealant section extends, the secondary container section is in communication with the primary container section at the narrow neck, the secondary container section is located adjacent to the weak sealant section, characterized in that the packing bag further includes an inlet, into which the content flows from the container compartment, wherein