How long can the hot melt adhesive be kept when not in use? How long is its shelf life? In recent years, environmental protection issues have attracted much attention. Hot melt adhesive, an environmentally friendly adhesive product, is favored by various manufacturers because of its many advantages.

At present, EVA hot melt adhesive is the most widely used. The main material is ethylene-vinyl acetate copolymer (EVA). Solid adhesive made by adding other materials such as tackifier and resin.

The hot melt adhesive must have a shelf life. No matter what kind of adhesive is exposed to the air environment for a long time, it will be affected by the temperature and humidity of the climate and cause the colloid oxidation. However, the oxidation rate of hot melt adhesive is relatively slow. Of course, if properly stored, the hot melt adhesive rod and rubber particles can be sealed when they are idle and unused. Placing them in a cool and dry place can slow down the oxidation rate of the hot melt adhesive and can be stored for a long time. If it is not properly stored, the colloid will turn yellow slowly, so it is necessary to try to prevent exposure to the sun and contact with water or steam. Extends the life of the colloid. Normally, it can be stored for about 1 to 3 years.

If EVA hot melt adhesive is exposed to too low temperature and humidity or hot and high temperature environment for a long time, it will affect the viscosity of the gel. It should be noted here that the hot melt adhesive belongs to chemical products, and should be careful to avoid being scalded by high temperature when heating. Keep out of reach of children.

   2023-3-11