Technical exchange: several precautions for plastic saddle stitching
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The binding factory often has both wire flat and wireless binding (such as the disc package). These two processes are arranged before the encapsulation, and the process flow of folding, bundling, waxing, matching, bundling, brushing, and encapsulation is naturally formed.
In the case of binding the book, the above-mentioned process is used, and the book-feeding staff is convenient to work, but there is a serious un-milling phenomenon when milling the back, which is easy to cause the page to be dropped. The main reason is that thick books are inevitably retracted when they are bundled. After the back of the book is glued together, the wear of the milling cutter is increased, and the back of the book is turned. Therefore, you can use the process of folding → bundling → matching → binding. In addition to overcoming the above drawbacks, the process saves personnel and reduces material loss. The disc package is made up of four people. One person hits the number of posts, one person feeds the book, and the rest of the staff covers the cover and receives the book. The work is relatively easy.
When making a bookbinding, use folding → bundling → matching page → first binding → receiving book, tearing paper binding → door cutter → second binding → Lekou process. The incision can be made neat when using a single-pack binding such as a disc pack, but it is necessary to increase the workload of four people in the first binding. When the second cover is applied, if a secondary milling back is not performed, a layer of paper two-layer glue can be seen in the book backing, and there are many round endorsements, and the appearance quality is not good. If the secondary milling back is performed, the quality of the book backpack seal is good, but at this time, the milling depth is increased, which is disadvantageous to the machine, and the size of the book is reduced. There are not only the value of the fashion order, but also the value of the milling cutter.
Use folding → bundling → waxing → matching page → bundling and brushing → door cutter → glue binding → after the process of stripping, replace the first binding with the binding glue, cancel the second binding process, Increasing the waxing process can save twice the man-hours. When bundling the rubber, it is required to have the back code of the book (such as the head), and the glue is applied on both sides to make the book difficult to spread, ensuring the cutting quality of the door cutter. Make sure the cuts are neat when cutting. If there is a small amount of unmilled when milling the back, the milling amount is increased to 3.5mm. This method not only reduces the loss of the milling cutter, but also guarantees the quality of the milling back.
This process can also be used on the ZXJD440A paperback gluing line. Because the general Lekou book is thicker, the number of posts exceeds the number of matching pages, and can only be stapled first. If the binding is used twice in the binding line, the second milling is too small, the adhesive can not penetrate into the back of the book, the book is easy to bond, and it is easy to wrinkle or round endorsement, and the quality of the package is not good. If the amount of milling is too large, the book cannot be opened and the size is incorrect. Because the machine does not have a second book, the glue on the side can not be brushed. When adjusting the machine, pay attention to the channel spacing when the book is finished and the book is dropped to the back of the conveyor belt to prevent the back of the book from being deformed, so that the size of the cut is affected.