Correct Use of EVA Hot Melt Adhesive, Open Perfect Binding Machine and Analysis of Common Problems (Part 2)

Second, the use of EVA hot melt environment and conditions

Nowadays , there are more and more companies that use EVA hot melt to process books and other books. No matter if large, medium, or small processing plants are used, they will continue to increase in the future. This is because the use of this adhesive has the advantages of fast publication, short cycle, good appearance of books, and saving manpower and material resources. However, some manufacturers are often eager to launch, strive for more activities, and more processing, while ignoring the appropriateness of the environment and conditions of using EVA hot melt adhesives. Therefore, many problems are encountered in the processing and are not well understood. According to their own experience, the following suggestions are made for the use of units.

Normal align=left> 1. Production plant temperature and humidity

Normal align=left> EVA hot melt adhesive is a kind of hot melt adhesive material. The open time and curing time after application are affected by the indoor temperature and humidity. Generally, the temperature in the indoor (ie the working workshop) should be kept at a constant temperature. It is suitable for 15 °C -27 °C (external requirements 22 °C -27 °C) / humidity should be maintained at about 50% RH . It is understood that the use of hot-melt adhesives in the country can meet this requirement very little. Therefore, in some regions where hot-melt adhesives are used, bubbles often appear in summer, which are difficult to be cured and cooled, sticking, sticking, etc. In winter, when the temperature drops, adhesives are often opened, the curing time is shortened, and the adhesiveness is not sticky or sticky. After the cover, there are often books with indefinite shapes that cannot be finished. The emergence of these problems is directly related to the temperature and humidity of the working plant. Therefore, it is required that:

Normal align=left> 1   For the modeling of the temperature of the wireless glue processing plant, we must first pay attention to it from the management personnel.

Normal align=left> 2   Conditional units should install constant temperature equipment and humidity instruments to ensure the normal standards of temperature and humidity, especially for workshops using hot melt adhesives. This is a necessary condition for model production.

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