| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that a book cover of a book in a book store mostly has, for example, mere turning-in parts at both ends of a book cover body and, in this case, the turning-in parts of both the ends of the book are liable to be opened and at a using time, the book and the cover are liable to be deviated and dropped. SOLUTION: The book cover comprises a seal adhered thereto so that the book and the cover may not be deviated and not be dropped, the cover may be easily removed from the book any number of times and may be fixed to the cover. The seal has a pressure-sensitive adhesive material layer only one of opposed both surfaces.
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