It may be a very complicated situation that the hot melt adhesive cannot be melted. It is the result of the mixing of the above reasons. There are many carbides in the glue furnace, which will cause inaccurate temperature control of the equipment for a long time. Even if the glue furnace is cleaned regularly later, but the temperature control of the equipment has long been damaged, it is difficult to control the melting temperature. Furthermore, the quality of the hot melt adhesive is not good enough, and the melting efficiency cannot keep up, which is even more confusing to the reasons why the melting cannot be opened. It is recommended to conduct a step-by-step investigation from simple to complex. The problem that the hot melt adhesive cannot melt is generally not difficult to solve. The hot melt glue can't be melted suddenly, find the cause of the problem first, and then prescribe the right medicine to solve it. There are too many carbides in the glue furnace: the hot melt adhesive is always used up and has been reheated for use, and the glue furnace is not cleaned regularly, making it more and more difficult for the hot melt adhesive to adapt to the gluing environment. If the glue furnace is not cleaned for a long time, there will be a lot of carbides that have accumulated over the years, which will hinder the conduction of heat.

The hot melt adhesive will melt slowly when it is heated slowly, and it will always feel like it will not melt. If it is too late to clean up, you have to try to increase the melting temperature and slowly wait for it to melt into liquid before use. The temperature displayed by the melter does not match the actual temperature: Sometimes it is not because of the performance problem of the hot melt adhesive, but the temperature control chipset of the melter has a problem, which causes the melt temperature to be inaccurate, and the actual heating temperature of the hot melt adhesive is not the same as the set temperature. If it doesn't match, it won't melt. To fully dissolve the hot melt adhesive, it needs to reach the rated operating temperature. If the temperature control of the glue furnace is not accurate and the heat supplied to the hot melt adhesive is insufficient, the latter will of course not melt. Gluing equipment needs regular maintenance, and the error between the temperature control of the machine and the actual provided temperature is checked from time to time, so as to make appropriate fine-tuning in production and use, so that the hot melt adhesive can maintain a stable performance output. The calcium content in the raw materials is too much: The content of the raw materials in each batch of products in the production of hot melt adhesives is generally strictly controlled. A small amount of error is acceptable, but due to production errors, certain raw materials are If you put too much, the performance impact will be huge. Calcium is very commonly used in the production of hot melt adhesives, it helps to improve the internal stability of the colloid, and plays an important role in maintaining the use of different environments. However, if excessive calcium is desperately added in order to increase the stability of the hot melt adhesive willfully, it will have a counterproductive effect. Although the amount of calcium is not a method to control the melting point, it still has a certain effect on the dissolution of hot melt adhesives.