Books binding materials - ring lining material

Paper commonly used for ring linings includes offset paper, coated paper, and mica paper.

Off-liner paper used as offset paper is mostly white. Different grades of books and periodicals use different quantities of ring backing paper. For general publications, the quantitative amount is 60 to 150 g/m2, and for higher-grade books and albums, the quantitative amount is 200 to 250 g/m2. In order to avoid wrinkling during pasting, the direction of the silk lining paper should be parallel to the spine.

Coated paper is used as ring backing paper for higher-grade books and magazines. The basis weight is generally between 100 and 250 g/m2. Decoration patterns related to the contents of the book may also be printed to increase the decorative effect of the books and periodicals.

Mica paper is a beige embossed paperboard for albums and hardcover books. It has a unique charm. Mica paper fiber is uniform, thick and thin, and both sides of the paper are soft and uniform in color.

Mica paper is flatbed paper with a paper size of 930mm x 645mm and 787mm x 1092mm. Quantitative are 170g/m2 and 200g/m2 two. According to the industry standard QB323-80, the main technical indicators of Mica paper are: the tightness is not more than 0.85g/cm3; the length of splitting (the average value of the vertical and horizontal) is not less than 2200m; the folding endurance (reciprocation times) is not less than 10 in the horizontal direction Times; sizing degree is not less than 1.5mm; ash is divided into 5.0% to 8.0%; transverse elasticity is not more than 2.5%.
Backing material

First, the book back with cloth

The commonly used book back is gauze. It is a woven loose-grain cotton fabric that is easy to penetrate the glue and stiffens after sizing. Placing the gauze on the back of the book block can improve the flatness of the back of the book and the bond fastness between the books, which is beneficial to the shaping of the back of the book. Hardcover books must be book-backed. For thicker paperback books, book backs are added to increase the back-to-back adhesion or lock fastness.

Second, the book back paper

The back of the book is a backing paper stuck to the back of the book block to reinforce the back of the book.

For paperback books, when the thickness of the book block is more than 15mm, the backing paper must be attached. The amount of backing paper that is commonly used on a perfect binding line is 150 to 250 g/m2 offset paper or paperboard. Before use, rewind the web to the desired width based on the length of the back of the book.

For hardcover books, kraft paper with good strength and flexibility should be used as backing paper and cheese paper.

Third, plug cloth

Plug cloth cotton fabric belt. With a raised ridge, there is a single color and a color. Stick on the back of the book to increase the bond fastness of the signatures and beautify the books. The width of the plug cloth is generally 15mm.

Fourth, ribbon

Ribbon, also known as the ribbon, is a 5- to 8-mm wide silk ribbon with red, green, yellow and other colors. The ribbon is glued in the middle of the back of the book, and the growth section is sandwiched in the book block and exposed under the foot.

Source: Bison