Packaging bag

A packaging bag for a microwave oven, wherein:

• a flexible film is formed into a bag shape,
• a tool used when eating the contents in the packaging bag is attached,
• said packaging bag comprises a bottom portion, a front portion, a back portion, and an opening portion, the front portion and the back portion facing each other and rising from the bottom portion,
• a space for accommodating the tool is provided at either end of the packaging bag in the left-right direction,
• the space for accommodating the tool is separated from a space for accommodating the contents by a partition weldment formed by heat-sealing the front portion and the back portion in the vertical direction,
• the opening portion extends in a left-right direction so as to be perpendicular to the partition weldment and is configured to tear the partition weldment, and
• the opening portion includes a pair of tear start portions configured to serve as a starting point for tearing the front portion and the back portion, and the pair of tear start portions are disposed on both the left and right sides of the partition weldment,
• the packaging bag further comprising a joint portion that includes a vapor release seal portion,
• wherein the opening portion is provided closer to the bottom surface portion than the joint portion, and
• wherein the joint portion extends in a left-right direction so as to be perpendicular to the partition weldment.