Minli shares with you the knowledge of books and hot melt adhesives

发布时间：2021-03-17 0

The binding link is the last process in the bookmaking and molding process. The processing quality of this process is the key to the pros and cons of the book and the overall effect. In the binding link, the binding glue is used to ensure the quality of the book during the binding process. The key link. The binding quality of books is not enough to rely solely on the responsibility of the glue binding workers. It also involves technology, production technology, quality of raw materials, the production environment of the workshop, and even the local climate. Therefore, it is necessary to analyze common quality problems. And explore.

In our daily life, we sometimes encounter this situation: the notebook is turned over and the paper falls. This situation is notEdge banding hot melt adhesivehas a problem. Under normal circumstances, book binding, there will be problems such as wire drawing, insufficient upper layer of back glue, insufficient edge glue, etc., because of some detailed flaws in manual operation, which affects the bonding of books. Therefore, the correct use of hot melt adhesive is the quality assurance of perfect binding products。Next, Guangzhou Minli will analyze for youBooks Hot Melt AdhesiveIntroduction and precautions!

The hot-melt adhesive for wireless binding of books and periodicals is light yellow and transparent, with oval particles, non-toxic and environmentally friendly. Take ethylene and vinyl acetate as the main raw materials, and add tackifying resin. High heat resistance, high strength, low temperature resistance, good fluidity, thin and uniform coating, can be sprayed and processed in subsequent stages, book hot melt adhesives are divided into book edge glue and book back glue according to their uses。

Book edge glue

Book Back Adhesive

In addition to a certain amount of opening and curing time for hot melt adhesive and book hardening, it is also required that the adhesive should be cooled and hardened (dried) as soon as possible, so that the finished product can be cut smoothly. This time is required to be fast and accurate, especially for the processing glue of the wireless glue binding production line, because this production line is a linked production line from the collating machine to the book cutting end, and the working process of each part is based on movement. The beats of the book are coherent. Therefore, after the cover of the package is finalized, the time of publishing the book and transmitting it to the cutting part must be regular and accurate in order to achieve the ideal effect after the book is cut. That is to say, when the book is delivered and transferred, it should be ensured that when the book reaches the position under the knife of the book cutter, the back of the book should have reached the level of cooling, hardening and drying, so that the quality of the cut product can be guaranteed. This time is generally used for 3 minutes to complete, otherwise it will cause deformation of the back of the book, unstable size, sticky knives, dirty books, etc. Therefore, the length of the conveyor belt of the book delivery conveyor of the linkage production line should be selected according to the operating speed.



The hot melt glue open time is to apply the glue to the adherend (the back of the book or the time to be glued, generally 7 to 13 seconds). This time is after the glue binding machine performs the milling and transmission, from the beginning of the glue application to the cover and The working process of book back, sticking, and clamping (including sticky paper), that is, the equipment must complete this work within 13S during operation. If the equipment can not be completed within 13s during operation, the bonding effect is definitely not ideal, and there will be weak adhesion, empty back, page falling after book formation, scattered posts, etc. Therefore, the opening time of the hot melt adhesive should be determined according to the operating speed of the perfect binder to determine which model is suitable.



The curing time of the hot melt adhesive is the time for the liquid adhesive to solidify, that is, the process for the glue to be firmly bonded and to be cooled and solidified. The curing time is generally 7 to 14 seconds, which is basically the same as the opening time. Users hope that this time can be shortened and is more conducive to book setting and cooling.



Hot melt adhesive is a kind of plastic adhesive. Its physical state changes with temperature within a certain temperature range, while its chemical properties remain unchanged. It is non-toxic and tasteless, and is an environmentally friendly chemical product. Because the product itself is solid, it is easy to package, transport, store, solvent-free, pollution-free, non-toxic; and the production process is simple, high value-added, high bonding strength, fast speed and other advantages. Guangzhou Minli Hot Melt Adhesive is a privately-owned enterprise specializing in the research and development, and sales of furniture edge banding hot melt adhesives. It is also a professional manufacturer of furniture hot melt adhesives and a high-tech enterprise in China.