Soft-cover hardcover book binding production process

Soft-cover hardcover refers to a new type of hardcover process that is different from the general hardcover book processing in the production of the cover. The book block processing and sleeve processing technology are exactly the same as the production of the general hardcover book.

Production process

1. Book block processing

Folding → sticky ring lining, single page → book distribution → thread lock → flattening, bundling → brushing and drying → split cutting → rounded ridges → three sticks (sticking cloth, gauze, back paper or package paper).

2. Cover processing

Cover (after UV finishing, pressure bumping and other finishing) → crimping, die-cutting molding → brushing adhesive → folding four sides, pasting soft cover.

3. Nesting processing

Apply mid-seam glue → book block to cover with soft bag cover → press groove → sweep liner → flatten and set.

Dimensional design of crimping line for hard cover of soft cover

1. Square back

The size of the back of the book is based on the actual size of the back measured after flattening and bundling. For books of 32 and below, the floating mouth is 3.0mm, for books of 16 and 3.5mm, and for books of eight and above is 4.0mm.

Due to the overlap of the back of the book backpack and the occupation of the plug cloth, it is necessary to add 2.0mm to 2.5mm on the left and right of the book back. The four-sided hem is set at 15mm. If the size is not large enough, the white edge can be enlarged.

The size of the pressure line of the cover of the hardcover of the square back soft surface is:

Height = finished product height + 2 × floating mouth width;

Width = measured book back size + 2 x finished product width + 2 x floating mouth width 10> <(2 or 2.5mm) (overlap of book back and occupation of plug cloth).

2. Round back

The size of the back of the book is based on the actual size of the back of the book measured after flattening and bundling × 1.1. The book float of 32 and below is 3.0mm, the book float of 16 is 3.5mm, and the book of 8 and above is floating The mouth is 4.0 mm.

Since the back of the round backpack also has overlap and occupancy, it should also add 2.5mm-3.0mm to the left and right of the book back, and the four-folded edge is set at 15mm.

The size of the pressure line of the hard cover of the hard cover of the round back is

Height = finished product height + 2 × floating mouth width;

Width = measured back size × 1.17 × 2 × finished width × 2 × float width + 2 × (2.5 or 3mm) (overlap of book cover and occupancy of plug cloth).

Regardless of the die-cut size of the cover of the square-backed or round-backed book, it is necessary to add 2 fold widths for the height and width on the basis of the size of the cover crimping line, and the eye opening is 2 × 15mm-30mm. The four-degree die-cutting degree is 45 °, so that the four corners are exactly right-angled after hemming.

Post-press hardcover technology is developing towards individualization and diversification. Soft-face hardcover is a new hardcover technology. With its low cost and simplified technology, it has been favored by more and more publishers and readers.

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