| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging bag which allows accurate opening of the bag body along a cutting line and is usable as e.g. a dish.SOLUTION: A packaging bag 10 has a plurality of cutting lines formed in one film serving as an opening surface, and the bag body 11 has a sealed bag mouth 12 and a seal part welded with three sides. The side opposite to the bag body 11 serves as an opening side 13. In the seal part, weak seal parts 22 and 23 weak in welding strength are provided in a part of the opening side 13. The cutting lines are formed so as to pass through the weak seal parts 22 and 23 from the opening side 13 to the bag mouth 12 and have first cutting lines 28 and 29 formed on the side-edge side of the bag body 11 and a second cutting line 30 formed between the individual first cutting lines 28 and 29. The opening surface has a first opening surface 16a held between the one first cutting line 28 and the second cutting line 30 and a second opening surface 16b which is held between the other first cutting line 29 and the second cutting line 30 and is equal in area to or wider than the first opening surface 16a. |
