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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 saving manpower and material resources. However, some manufacturers often focus solely on producing and processing EVA hot melt adhesive, while neglecting the applicability of the environment and conditions in which it is used. As a result, many difficult to understand and comprehend issues arise during the processing. Here are some suggestions based on my own experience for reference by the unit.
Temperature and humidity of production plant
EVA hot melt adhesive is a type of hot melt adhesive material. The opening time and curing time after construction are affected by indoor temperature and humidity. The temperature of the general indoor (i.e. workshop) should be maintained at a constant temperature of 15 ° C-27 ° C for a suitable period of time (foreign countries require 22 ° C-27 ° C)/the humidity should be kept at around 50% RH It is understood that such requirements are rare in the use of hot melt adhesives in China. Therefore, in certain regions. In summer, glue often has bubbles, is not easy to cure, is not easy to cool, and can be used to stick tape, knives, etc. When the temperature drops in winter, the glue often opens, the curing time is shortened, and the adhesion is not firm or good. As a result, the book is often not shaped after the cover, and the finished product cannot be cut. The occurrence of these problems is directly related to the temperature and humidity of the workshop, so it is required to:
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