Cleverly adjust the wireless binding package to expand the application space of the device

The wireless binding package is favored by printing companies because it can complete the binding, indentation, gluing, and packaging of books and magazines at one time. The wireless binding package has a fast development speed, frequent replacement of models, better and better performance, and higher quality of the package. However, for printing companies, it is not realistic to frequently replace old equipment and replace new equipment. What should I do? This requires us to tap the potential of existing equipment to make the most of it to meet the needs of the job.

Equipment adjustment analysis

My unit has a wireless binding package machine, which has been purchased for about 10 years. The design of the equipment model is relatively simple. The hardware standard when purchasing the machine can be a double-adhesive paper book. But this kind of equipment can't do anything when it comes to coated paper books.
The quality standard of the wireless binding package is based on the adhesion degree and the resistance of the finished book. At first, we suspected that there was a problem with hot melt adhesives. Therefore, we did not hesitate to purchase the best hot melt adhesive for coated paper, but the effect did not change much. The coated paper books were still one. I will open it. Later we analyzed that this phenomenon is caused by paper characteristics. The paper weight of the double-adhesive paper book is usually 50-70g/m2, the paper stiffness is small, the hot-melt adhesive has strong adhesion, and the double-adhesive paper book after the package is strong and resistant to turning and anti-smashing, while the coated paper book is Different, the paper is mainly based on 128-200g/m2, and the paper has a large stiffness. When the book is turned over, the external tension of the book back is several times or even several times that of the double-adhesive book, plus the coated paper itself is smooth. The hot-melt adhesive has poor adhesion, and the book that comes out of the package is inevitable.
In order to live on time and ensure the quality of the products, we have to lock the printed pages first, then glue and cover the book, so that the books after the package are indeed strong, but the lock line is laborious and wasteful. time.
With the development of the new wireless binding bag machine, there is a glue binding package book on the market that can directly package the book without the lock line. We will first lock the line, re-bond and unpack the tape, directly bind the binding package of the machine (for the convenience of expression, the former is referred to as "old equipment" hereinafter, the latter is referred to as "new equipment"). In comparison, it is found that the depth of the milling back is similar, but the groove depth of the back groove of the book is not the same. The old equipment is shallowly grooved and almost no groove marks are seen, and the new equipment is grooved deep, which is almost the groove depth of the old equipment. Several times, so the books and magazines out of the new equipment are both strong and resistant, and they are destructively broken by hand, and the books will not be easily spread.
We conclude that the key to the book is the slotting of the back of the book. The requirements for the milling back are relatively low. Just insert the book pages of each bag and let the hot melt glue penetrate into the inside to stick to each page. . The distance between the backs of the new equipment is 7 mm, and the back of a book of A4 books should be close to 40 grooves. The hot melt glue penetrates into the groove, and the back of the loose book is coated with a layer of primer. Wrapped around the "bone and bones", such as the tight line of the lock line, fasten each page, not let the books spread.
In order to explore the difference between the groove depth of the old and new equipment, we use the same kind of books to compare the milling back and the groove depth on the two devices. We only look at the milling back slotting state, and do not let the hot melt adhesive on the back of the book. The result is a new device. The roughness of the milled book back is not much different from that of the old equipment, but the groove depth of the new equipment is close to 2 mm, and the groove depth of the old equipment is about 0.5 mm. In order to further verify whether the problem lies in the depth of the back of the book of the old equipment, we will complete the milling and backing of the coated paper books of the new equipment, and use the special glue and double glue of the special coated copper paper books on the old equipment. The hot melt adhesive of the paper was tested by a separate glue. The results of the coated paper were very strong, and the effect was the same as that of the new equipment using the same type of hot melt adhesive coated paper. The test results show that although the role of hot melt adhesive in the quality of the book is not small, the depth of the book back is not enough, it is also difficult to guarantee the quality of the book.