A hardcover book is an elaborate way of making a book. Hardcover books are mainly made after various modeling processing on the cover of the book, the back of the book block and the corner of the book. Processing methods and forms are diverse, such as book block processing has round back (ridge or no ridge), square back, square corner and rounded corner; Cover processing is divided into whole face, joint, square Angle, hot foil, pressing pattern and so on.

Several common forms of hardcover books:

First, according to the form of the spine, there are two kinds of square spine and round spine.

1, the square spine, its thickness is thicker than the book block. Due to the folding and wiring of the book block, the height of the spine is higher than the book block, and the more the printing sheet, the more obvious. Therefore, the square spine of the hardcover book should not be too thick, generally suitable for the spine within 20mm.

2, round spine, due to the slightly different status of the book before and after the book, the folding of the book is slightly semicircular, distributed on a curved surface, and its thickness is balanced. The opening of the book block ADAPTS to the convex circle of the spine and is concave. So thicker books use round spine is better. The round ridge book is rounded into a circular arc after the round processing, generally with the thickness of the book core for the string and the arc is 130°. The round ridge can be divided into two types: round back without ridge (only round without ridge) and round back with ridge (round ridge, the height of ridge is generally the same as the cardboard thickness of the book case).

Second, according to the material used, it can be divided into two kinds of ridge surface same material and ridge surface different material.

1, the ridge surface with the same material, that is, the spine and the cover cover are made of the same material as the whole piece. There are square ridges and round ridges. Hardcover fabric paper, fabric, lacquered paper, varnished cloth, etc., are generally equipped with a cover. However, there is a whole paper printed with book titles, patterns, etc., and pressed film pasted on cardboard, this kind of book is mostly square ridge without cover.

2, ridge surface material, that is, the spine and the cover are made of different materials, usually with fabric spine, paper pasted on the cardboard plate for the cover, this form is generally round ridge without cover.