| 摘要 |
PROBLEM TO BE SOLVED: To enhance practicability as a primary packaging to scorner portions of a material to be packaged. SOLUTION: The auxiliary device for packaging is composed of a triangular cap body portion 1 fitted to a corner portion of a material A to be packaged with a plate shape, absorbing small irregularities Ac of the material A, and a disengagement-preventing structure 2 provided at positions on the body portion 1 opposing to one or both of the front surface and back surface of the material A and preventing the disengagement of the body portion 1, which is integrally formed and fitted on the material A, from the material A.
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