| 摘要 |
PROBLEM TO BE SOLVED: To provide a book with sending and reply envelope functions and a book having sending and reply envelope functions pasted thereon by providing pages with sending and reply envelope functions on particular pages of a book and perforating the book for separating the pages with sending and reply functions so as to paste the pages again after sending and returning. SOLUTION: In a double envelope forming paper piece, a return envelope forming dried paste applied part and a perforated part are provided and a return envelope addressing surface 10, a printed surface 11 and a sending and returning envelope addressing surface 12 are printed. Further, a perforated part and a return envelope forming dried paste applied part are provided. In addition, a self-adhesive tape consisting of a self-adhesive and a releasing paper is applied onto the rear side of a double envelope forming paper piece.
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