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More and more books are using EVA hot melt adhesive for binding process. Almost all of them are used in large, medium, and small processing plants across the country. There will still be an upward trend in the future. This is because using this adhesive results in fast book publishing speed, short cycle time, aesthetically pleasing books, and eliminates several processes. But often because printing factories are eager to get started and strive for more processing, they overlook the scientific nature of the environment and conditions for using hot melt adhesive, resulting in many problems during the processing. The following points are provided for users’ reference:
Effects of Temperature and Humidity in Production Workshops
EVA hot melt adhesive is a type of thermoplastic adhesive. The opening time after application is affected by indoor temperature and humidity. Generally, the indoor (i.e. workshop) temperature should be kept constant. The optimal temperature is between 15-26 ℃, and the humidity should be maintained at around 50%. However, it is understood that very few units nationwide that use hot melt adhesive can meet this requirement. Therefore, when hot melt adhesive is used in many areas, there are too many bubbles in summer, making it difficult to cure and cool down. In winter, the adhesive solidifies, the cooling time is shortened, the bonding is not firm or sticky, and the book breaks after pasting. In other regions, due to high humidity, the book behind the cover is not properly shaped and cannot be cut, etc. These phenomena are directly related to the temperature and humidity in the workshop. So the requirement is:
During the use of hot melt adhesive, many customers have reported that the glue does not stick. Therefore, most users will encounter various troubles in the production process because they do not have a deep understanding of hot melt adhesive. Below is a detailed introduction on how to improve the bonding strength of hot melt […]
In the adhesive industry, rosin and modified materials are the most commonly used thickeners. Today, we will share some performance indicators of these resins: Rosin ① Name and characteristics Chinese alias: Tar rosin; Raw rosin. English name: Rosin. English alias: Symphony. Rosin is a transparent solid that is slightly yellow to yellow red in […]
Hot melt adhesive is a type of plastic polymer adhesive. Within a certain temperature range, its physical state will change with the temperature. EVA hot melt adhesive is an environmentally friendly chemical product. During use, sometimes hot melt adhesive may be pulled out after melting. What is the reason for drawing hot melt adhesive after […]
What issues should be considered when using EVA hot melt adhesive? Although there are various types of hot melt adhesives, there are five key factors that can affect their performance. Consider these items before applying hot melt adhesive to ensure ideal performance: Temperature When using EVA hot melt adhesive, ensure that it can fully wet […]
