Although hot melt adhesive colloidal particles are a chemical product, even if burned in an open flame, they will only carbonize at the end and will not burn on themselves. Therefore, hot melt adhesive particles are considered non flammable.


Hot melt adhesive particles are usually synthesized from conventional raw materials such as resins, tackifiers, plasticizers, antioxidants, etc. Although some of these raw materials may be flammable, the chemical interactions between them make them generally non flammable. This type of hot melt particle is very sensitive to temperature and only responds to changes in temperature.

When encountering an open flame, the flame continuously transfers heat to the hot melt adhesive. As the temperature continues to rise, the hot melt adhesive particles will melt and become increasingly thin. If the temperature continues to rise, the glue will gradually darken and become harder from its changing properties, ultimately turning into coke. During this entire process, hot melt rubber particles transform from solid to liquid, and then from liquid to solid. Despite their constantly changing properties, they do not exhibit significant flammability.


It is worth noting that the pollutants on the surface of hot melt adhesive particles may burn, giving people the illusion that the hot melt adhesive particles themselves are non combustible. Some users may be careless and expose unused hot melt particles in heavily polluted production workshops. These particles are easily adhered to the surface by pollutants and are difficult to remove. During the production process, these pollutants will enter the hot melt adhesive particles as the temperature of the rubber oven increases. When the hot melt adhesive particles melt, the pollutants will continue to burn. Unknown users may mistakenly believe that the hot melt adhesive is burning.


Hot melt adhesive is widely used in many industries, and the raw material formula has a strong ability to regulate the performance of hot melt adhesive. In traditional mature industries, there are no combustible hot melt adhesive particles.

   2023-10-12