EVA hot melt adhesive is a thermoplastic, non-toxic and odorless green and environmentally friendly adhesive. When used, it is easily affected by the seasonal environment and climate. In winter, the wettability is poor and prone to brittleness, while in summer, the hot climate can slow down the curing process of hot melt adhesives and make them sticky. Usually, hot melt adhesives are in the shape of rods and particles. After heating within a specified temperature range, their physical state changes with temperature, but their chemical properties remain unchanged.

During the summer, the temperature in some parts of southern China will continue to approach 40 ℃. At such high temperatures, the transportation and storage of hot melt adhesives can easily soften, sticky, and affect their use. What should we pay attention to when using hot melt adhesive in summer? How to store it? Why is the texture too hard?

1. Try to avoid prolonged exposure to sunlight; Avoid excessive adhesion, softening, and clumping caused by gum evaporation.

2. Store in a cool, ventilated and non humid environment; In addition to being sun proof, the hot melt adhesive rod should also be moisture-proof, as moisture absorption in excessively humid environments can easily lead to changes in the performance of the adhesive rod.

3. In high temperature environments in summer, the working temperature of the hot melt adhesive gun can be appropriately lowered when using it.

Due to the cyclic softening performance of the hot melt adhesive rod, more attention should be paid to the impact of temperature on the hot melt adhesive in summer, and efforts should be made to avoid affecting the use of the hot melt adhesive rod due to long-term exposure to high temperatures near the critical softening point of the colloid.

Of course, if improper storage causes adhesion, softening, or clumping, it is also possible to soak it in cold water for a period of time to cool and harden before use.

Due to the hot and humid weather in summer, the use of hot melt adhesives can easily cause problems due to temperature changes. So as a professional manufacturer of hot melt adhesive, the formula for hot melt adhesive in summer is definitely different, and we will produce hot melt adhesive with a hard texture that is suitable for this climate preservation use. So why is this?

This is because harder hot melt adhesives have a higher softening point and are more resistant to high temperatures. Sometimes the adhesive does not stick after application, and the adhesive is very thin and slow to dry. Even when the adhesive dries, the adhesive area is prone to detachment. In the hot environment of the summer dog days, unused hot melt adhesive will significantly soften compared to normal temperature hot melt adhesive. Therefore, as a manufacturer of hot melt adhesives, Guangdong Weiwang New Materials Co., Ltd. will use different formulas to produce more suitable hot melt adhesive products in both winter and summer seasons, in order to cope with the application of hot melt adhesives with the same style and function in different temperature weather.

   2023-4-6