Shenjia Hydraulic

　　1. Saddle stitching
　　Binding method: A single thread is threaded through the pre-punched holes in the pages. Typically, this thread is a strong, durable cord. One end of the thread passes through all the holes along the spine of the book and then returns to the spine on the cover. This thread holds the pages together.
　　Saddle stitching is a binding method in which the binding thread is threaded through the book spine to hold the individual sections of pages together.
　　Advantages: 1. Easy to browse. 2. Suitable for binding thicker books. 3. Can be laid flat and spread open.
　　2. Perfect binding (adhesive binding)
　　Binding method: Perfect binding is currently one of the most widely used binding techniques. Within perfect binding, there are three main types: hot-melt (EVA), cold-glue (PVA), and PUR adhesive binding. This method uses a strong adhesive to bond the assembled signatures or individual pages—arranged in proper page order—into a book block, which is then covered with a cover.
　　Advantages: 1. Suitable for both paperback and hardcover binding, it is the primary binding method for printing larger books. 2. Books and periodicals can open flat to 160 degrees; with PUR adhesive, they can nearly reach 180 degrees, making it easier to read spread‑out photographs and charts.
　　Drawbacks: 1. If the adhesive’s viscosity is insufficient, the pages may easily come loose.
　　3. Thread-sewn perfect binding
　　Binding method: This combines both “sewn binding” and “glued spine” techniques. During sewing, the pages are first threaded together with thread, and then glued to the spine. This binding style is particularly sturdy, allowing the book to lie completely flat for easy reading.
　　4. Square back, flat spine, premium binding
　　Binding method: A flat spine refers to a book where the spine of the text block is left unrounded, with neither the spine nor the fore edge featuring any curvature—resulting in a straight, flush midsection that resembles the back of a paperback. However, all other aspects are executed using hardcover binding techniques. A square spine is another common hardcover binding style, in which a rigid cover is joined to the text block, and the spine is finished with a squared‑off profile that does not protrude.
　　5. Butterfly Dress
　　Binding method: Each page is folded inward along the center crease, then secured with double-sided tape running along that crease. When opened, the pages lie flat—unlike thread-bound books, which have visible needle holes and stitching, or glue‑bound books, which cannot open fully. This method is widely used for creating portfolios.
　　6. Folded binding
　　Binding method: Glue the paper into long strips, then fold them repeatedly to form a book. This type of folding—known as accordion binding—has the drawback of being prone to wear and breakage. As a handcrafted technique, accordion binding is both enjoyable and straightforward to execute.
　　7. Saddle-stitched binding
　　Binding method: A saddle-stitching machine punches holes along the center spine, threads a saddle stitch through the holes, and then bends the ends to secure the text block to the cover. This method is commonly used for brochures, photo albums, magazines, and similar publications.
　　Advantages: 1. Short time frame and low cost. 2. Enables the production of simple books.
　　Drawbacks: 1. The wire used for stapling becomes visible. 2. The wire struggles to penetrate thicker sheets of paper.