Classic Hardcover Book Set is a more elaborate form of binding in book publishing for classical works, fine-printed books and frequently read reference books.
There are several common forms of hardcover books:
Divided by spine form, there are two kinds of square spines and round spines.
The square spine is thicker than the book block. Due to the folding of the book block and the cable, the height of the spine is higher than that of the book block, and the more the printed sheet, the more obvious. Therefore, the hardcover book of the square spine should not be too thick, generally suitable for the spine within 20mm.
Because the position of the front and back of the circular spine is slightly different, the fold of the book is slightly semi-circular, distributed on a curved surface, and its thickness is balanced. The opening of the book block is adapted to the convex shape of the spine and is concave and round. Therefore, thicker books use a round spine. The round spine book is formed by rounding the back spine into a circular arc shape. Generally, the book core thickness is 130° for the string and the arc pair. The round ridge can be divided into two types: a round back without a ridge and a round back with a ridge (the height of the ridge is generally the same as the thickness of the cardboard of the book case).