Spine position = (number of pages in the inner page /2)* thickness of paper used in the inner page
2. hardcover spine position
Spine position = book block thickness+(cardboard thickness *2)
The spine refers to the thickness of the book, and the calculation method is:
A, (p number ÷ 2) × 0.00 1.346× paper gram = spine
P number: refers to the total number of pages of the same kind of paper. Usually, an A4 paper is 2P, and the design company calculates the P number according to it.
2 10mmX285mm, calculated, i.e. 16.
No matter how wide the book is, when calculating the spine, the p number is to calculate the pages of the same paper. If there are different papers, calculate the thickness of other papers and finally add them up to get the total thickness of the book.
B, (p number ÷2)× inner page paper thickness = spine.
The thickness of the paper used in the inner page is generally called 128g, 157g, etc.
C, 0. 135 X g/100 X page = spine thickness This formula is suitable for low grams (128g or less).
Gram weight divided by 1800, multiplied by the total number of pages, plus 1.5mm! !
The number of pages in the book is divided by 100 and then multiplied by the parameter 50 g: 3.5 60 g: 3.8 70 g: 4.0.
The calculation formula of professional spine of printing house is 0. 135 X grams/100 X pages (special attention: pages are not codes) = spine.
Thickness (mm)
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