With the continuous development of post-press binding technology, saddle-stitching as a process of brochures printing post-binding, its binding speed and binding quality have also changed.

Saddle stitching process simple, short turnaround time and low cost, can be flat open, easy to read, it is widely used in brochures printing, binding information materials, magazines, pictures, posters, etc., which is collating—binding—cutting--packing.

1. Collation

Books that are bound by saddle stitching should not be too thick, otherwise the wire cannot penetrate and the number of pages can only be up to 100 pages. Therefore, books with saddle-stitch binding generally need to add pages with no more than 8 groups. When adding pages to the post storage bucket, try to tidy up the stack of pages so that air can enter between the pages to avoid sticking when the next page is caused by long accumulation time or static electricity, which will affect the boot speed. In addition, for pages with uneven front-end code table, the pages should be sorted out when the pages are added, so as not to cause downtime during the production process and affect the production speed and output. Sometimes, due to dry weather and other reasons, static electricity will be generated between the pages of the book. In this case, you need to spray some water around the pages or use a humidifier to perform humidification to eliminate static interference.

2. Binding

According to the thickness and material of the paper, the diameter of the wire is generally 0.2-0.7mm during the book-booking process. The position of the wire is two quarters from the top and bottom of the book block, and the tolerance is within ±3.0mm. No bad nails, missing nails and heavy nails are required when ordering the book; the book is neat and clean; the feet are flat and firm; the distance is even and on the crease line; the skew error of the signature is ≤2.0mm. During the book-booking process, it is necessary to frequently check whether the booklet meets the standard requirements, and stop processing in time when problems are found.

3. Cutting

When cutting, the blade should be replaced in time according to the size and thickness of the book to ensure that the book is cut out without bleeding, knife flowers, continuous pages, and no serious breaks. The skew error of the finished product is ≤1.5mm.

4. Packing

Before packaging, the quality of the finished product should be checked. The book should be clean and tidy, without obvious folds, dead folds, broken pages, dirty marks, etc.; the page order is correct, and the error inward or outward should be ≤0.5mm. On the collection code table, the books should be neatly organized, and then packed into books using a stacker. It is required that the counting is accurate before packaging and labeling.