In the printing of books and periodicals, the thickness of the spine is an important parameter, which determines the overall size and weight of books, and also affects the process of printing and binding. The calculation method of spine thickness will be described in detail below.

First, we need to determine the thickness of each page. Depending on the type and grade of paper, the thickness of each sheet will vary. In general, 105 grams of coated paper is about 0.1 mm thick, 80 grams of offset paper is about 0.07 mm thick, and 80 writing paper is about 0.06 mm thick. Then we need to calculate the thickness of the back of the book. The thickness of the back generally depends on the number of sheets of the inner sheet and the thickness of the paper used.

For example, the spine of a 120P 105g coated paper is 0.1mm x 60 sheets = 6mm.

We can easily estimate the initial thickness of a book according to the paper thickness and the number of internal pages of different categories. But the safest thing to do is to take out the corresponding number of sheets of paper and make accurate measurements.

Note that the preceding data is for reference only and needs to be adjusted based on actual conditions. For example, the paper may be distorted during printing, so the actual spine thickness may differ slightly from the calculated results.

In conclusion, the calculation of spine thickness is very important for book design and printing. With accurate calculations, we can ensure the accuracy of book size and weight, thus ensuringPrinting of books, periodicals and albumsQuality and ease of transport.

Recommended Reading：

Choosing the right materials for printing books and albums: Paper, Ink & More

From Demand to Finished Goods: The Service Evolution of Books, Periodicals and Albums Printing Company

Corporate Album Printing Specialty Company: How to choose the right paper size

Printer's album printing