Today we are going to introduce two kinds of spines of the book----square spine and round spine

      1, square spine

      2, round spine

      The size of the book spine is based on the actual book spine size X1.1 measured after flattening and bundling, and the book cutting of 32 mo and less than 32 mo is 3.0mm, and the 16 mo book floating mouth is 3.5mm, 8 mo and more than 8 mo books. The floating mouth is 4.0mm. Since the spine of the round spine is also overlapped and the cloth is occupied by the cloth, it should be added 2.5- 3.Omm to the left and right sides of the book, and the four sides are set to 15mm. If the size is not large enough, the white side can be enlarged. Round spine soft surface hardcover book cover line size: high = finished high + 2X floating mouth width; width = actual book back size X1.17 + 2X finished product width 12 2X floating mouth width + 2X (2.5 or 3mm) (book spine overlap and The plug cloth is occupied). The soft surface hardcover book refers to the new hardcover process which is different from the general hardcover book processing in the cover making process. The book core processing and the nesting processing process are exactly the same as the general hardcover book.