| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging bag used also for a container for eating food by easily executing predetermined tear along a weakening line by a smooth tearing force.SOLUTION: The packaging bag used also for the container for eating has at least longitudinal seal parts provided at right and left side ends, and an upper transverse seal part provided at an upper end where the length of the longitudinal seal part is not smaller than the length of the upper transverse seal part, filled food is heated in a self-standing state. A weakening line extending straight in a horizontal direction is provided between the longitudinal seal parts of the right and left ends at the position of the height 1/3 or 2/3 with the inner edge of the upper transverse seal part as a reference. At least one of inner edges of the longitudinal seal parts is provided with an inwardly projected seal part across the weakening line. A tear starting part connected to the weakening line is provided at the other outer edge of the longitudinal seal parts, and a seal recess across the weakening line is formed at the inner edge of the projecting seal part. |
