The waist seal of a book is actually a paper tape wrapped on the surface of the book, just like an ornament, which can make the whole book look more high-end and elegant. Generally, the girdle is not as big as the whole book, only about 0/3 of the height of 65438+ book is suitable, and of course there are some slightly larger ones. On the surface of the waist seal, some books-related words or pictures will be printed as publicity to make up for the lack of text decoration and make the whole book look more beautiful and more attractive to readers. Therefore, this kind of waist seal is like a business card of this book, which can generally enhance the value of the book and set off more elegant quality. Of course, it is also a way of advertising.