| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging bag which can be heated with cooked food packaged inside and which does not damage the taste or quality of the food. SOLUTION: On a certain face of a bag formed of flexible synthetic resin films 1, 2, an outwardly folded part 4 is over its width direction. On one face of the folded part or on the bag body of the face with the folded part formed, a ventilation hole 5 communicating with the inside and outside of the bag is provided. By folding the folded part onto the body side of the bag, the ventilation hole is closed, and the space between the folded part and the bag body is adhered with an adhesive 8. |
