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Book edge glue is an important but often overlooked application of book binding glue. Simply put, it refers to using a thin layer of hot melt adhesive to bond the inside of the cover to the first, last, or final page of the book. Although side bonding is much smaller in volume than spine bonding, it is important for two main reasons – it forms a hinge on the cover that can release pressure from the spine when the book bends or opens, and makes the finished publication more aesthetically pleasing.
There are three main methods for using book edge glue for side bonding – using a wheel system, intermittent extrusion nozzles, or using side lines. The wheel tank system works by using two horizontal wheels to pick up molten adhesive from an open tank. Then, the wheels apply hot melt adhesive in the form of a thin film on both sides of the book. It is not precise, not very adjustable, and sometimes produces a string of bookbinding adhesive because it is not connected to the reverse rotation roller.
Due to its more precise intermittent function, the extrusion nozzle system occupies a small area, which helps to minimize hot melt adhesive drawing problems to the greatest extent possible. In recent years, this smaller closed system has become very popular because it can minimize carbon buildup and also reduce overall adhesive consumption during the application of bookbinding glue.
Although somewhat primitive and imprecise, the sideline system is also an effective and economical choice for low-quality publications with a short lifecycle. The system uses metal wires located in the spine glue applicator pot to move the “waves” of bookbinding adhesive from the drum to the side of the publication. Due to the higher viscosity of ridge glue compared to most side glue, using the same adhesive in both applications can have adverse effects on deposition and compression.
The edge glue of books and periodicals is usually ethylene vinyl acetate; （EVA） Or pressure-sensitive adhesive; （PSA） Hot melt adhesive, every type of adhesive has key advantages. EVA Hot melt adhesive has a slow solidification time and zero residual viscosity, providing strong adhesion, excellent machinability, and easier cleaning. Used for binding; PSA Hot melt adhesive provides unlimited opening time and strong bonding, while minimizing annoying pulling wires that may cause machine downtime and product defects.
How to solve the troubleshooting of packaging hot melt adhesive? Hot melt adhesive is some of the most advanced adhesives used today, but even with daily maintenance, adhesive problems can still occur. This guide aims to help manufacturers overcome some of the most common adhesive challenges faced in packaging applications. There may be various reasons […]
Hot melt adhesive granulesCan PET film be adhered? Yes, but it depends on the particle type and usage method. PET (polyethylene terephthalate) film has low surface energy and weak polarity, and ordinary EVA hot melt adhesive particles are prone to “false adhesion” and easy to peel off when directly adhered. To firmly adhere PET, a […]
In the production process of books and periodicals, the binding strength is an important factor determining their durability and user experience. If a book is not firmly bound, there may be phenomena such as page dropping and glue peeling during the reading process, which seriously affects the reader’s reading experience. Therefore, conducting a book binding […]
Direct answer:Hot melt adhesive pelletsThe cost of raw materials generally accounts for 65% to 80% of the factory price. Taking EVA type hot melt adhesive granules commonly used in book binding as an example, in 2026, the raw material cost will be approximately 9000-13000 yuan per ton, while the finished product price will mostly fall […]
