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EVA hot melt adhesive is different from regular cold melt adhesive. According to its characteristics, the following points must be mastered and noted during use:
When using EVA hot melt adhesive, do not heat it directly with an open flame. Be sure to heat with isolation oil (the boiling point of water should reach 100 ℃) or use a sealed electric heating plate. Before using solid EVA hot melt adhesive, it must be preheated with a preheating device and then released into the working glue box of the adhesive. The preheating time is generally around 2 hours. When using glue, do not directly mix solid glue blocks (i.e. glue that has not been preheated) into the glue box to prevent Poor fluidity of glue or applying partially melted glue on the back of the book, resulting in uneven application of glue. The amount of glue in the preheated glue pot should be controlled properly. If too much is used, the glue will melt one by one, causing deterioration and aging, reducing viscosity, and affecting adhesion. The entire bonding process must be completed within the opening time of the hot melt adhesive. If the machine is stopped due to a malfunction, the books in the bookshelf must be removed in a timely manner, and the book core must not stay above the glue wheel. When repairing wireless adhesive binding equipment for a long time, the pre coating glue and working glue pot should be turned off to prevent glue aging. The temperature of the molten colloid should be strictly controlled within the range of use. Direct answer: One kilogram of hot melt adhesive granules specifically designed for books and periodicals, estimated to be able to hold approximately 80-120 books in a common A4 booklet (about 150 pages, with a book back length of about 29.7 centimeters); There are more pocket books and thin books, up to 150 or more; Thick […]
Book bindingHot melt adhesive granulesHow to calculate the dosage? Many book and magazine factories purchase hot melt adhesive granules based on “feeling”, resulting in either material shortage, production stoppage, or stockpiling and occupying warehouses. In fact, the dosage can be calculated very accurately: the glue consumption per book ≈ the spine coating area x the […]
The occurrence of wire drawing, back cracking, page dropping, or edge glue overflow in book and magazine binding lines may not necessarily be due to “insufficient glue”. The paper coating, glue temperature, glue amount, milling back quality, and finished product cooling time will all jointly affect the results. This article provides a feasible troubleshooting sequence […]
Direct answer: The reason for the broken glue when flipping pages in the adhesive book is that the glue layer has not penetrated into the back of the book and the glue layer is brittle. The solution needs to start from four aspects – milling and slotting should be in place, the temperature and amount […]
