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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.
More and more manufacturers are using EVA hot melt adhesive to process books and other materials, regardless of the size of the processing plant, there will still be an upward trend in the future. This is because using this adhesive has the advantages of fast book publishing, short cycle time, beautiful appearance of books, and […]
EVA hot melt adhesiveWhat are they made of and can they be recycled? The difference between biodegradable and bio based packaging follows a global trend where consumers want to produce and purchase more environmentally friendly products. The awareness and recognition of more environmentally friendly and sustainable packaging materials (such as reusable, biodegradable, etc.) are growing, […]
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 […]
lookHot melt adhesive granulesTest report, first capture four numbers:softening pointDetermine whether the finished product is heat-resistant or not,melt viscosity Deciding whether to apply the glue smoothly or not,Opening hoursDeciding whether it fits your machine speed,Ash and moisture contentDeciding whether the machine will be blocked or carbonized. The rest of the projects are auxiliary, and these […]
