| 摘要 |
PROBLEM TO BE SOLVED: To provide a corner reinforcing paper by which the corner parts of a paper pad can be easily reinforced with certainty and rapidity. SOLUTION: A notch with a right-angled part is formed at a part of a piece of paper with an adhesive material applied on the back and a first folding line is formed at an extension of one side of the notch, while a second folding line is formed at an extension of the other side. Further, a contact part formed by the first and the second folding line on the opposite side of the notch is bonded to the corner parts of a cover of the paper pad and at the same time, the two folding pieces positioned opposite to each other, pivoted at the contact part are folded back to the back along the edge of the paper pad and bonded to the back cover. Thus the corners of the paper pad are reinforced.
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