Hot melt glue is through the hot melt glue machine to melt glue, the state of the glue stick becomes liquid after melting glue, can be applied by coating, spraying glue, making strips for construction; In the process of hot melt glue, sometimes there will be bubbles, then what is the cause of the bubble, the general cause of the bubble may be due to the bubble itself, after melting bubbles, or the glue stick contains water, when heating will also produce bubbles, there is hot melt glue due to high temperature resulting in destruction, decomposition of gas, resulting in bubbles.

Therefore, the hot melt adhesive should control the use temperature during use, clean the equipment regularly, prevent carbon accumulation, and avoid the damage of the glue rod caused by excessive local temperature, which affects the performance of the hot melt adhesive