| 摘要 |
PROBLEM TO BE SOLVED: To prevent each of twin rings in a package from coming into contact with each other by a method wherein a packaging bag suitable for packaging the twin rings is provided with a bag-shaped member that is sealed up at its periphery with a part being left opened while a through hole being provided approximately at the center thereof, and an incision is provided, extending from the through hole to the opening. SOLUTION: A packaging bag 1 is formed of a surface member and a reverse side member and scaled up at its periphery excluding a side 5a so that an opening 4 is formed at a part thereof. A through hole 6 is provided approximately at the center of the surface member and the reverse side member, and an incision 7 is provided, extending from the through hole 6 to the opening 4. A notch 8 is provided at the reverse side member on a position approximately at the center of the side 5a. On putting twin rings 9 into such packaging bag 1, one ring 9a of the twins is inserted through the opening 4 into the bag 1 while the other ring 9b is inserted through the incision 7 so that the ring can be arranged at the through hole 6. Thereby, two rings 9a and 9b of the twins are prevented from coming into contact with each other while being housed.
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