Why does hot melt adhesive not stick in winter?

There are many reasons why hot melt adhesive is not sticky, depending on which factors affect its performance, and temperature is one of the most common reasons at present. As the weather turns cold, when bonding materials, the phenomenon that the glue has solidified often occurs. Even if it is not cured, the best bonding effect is missed. Even in some northern areas, the temperature of materials is quite low, which leads to unsatisfactory bonding effect.

Hot melt adhesive is a kind of plastic adhesive. In a certain temperature range, its physical state changes with the change of temperature, but its chemical characteristics remain unchanged. Non-toxic and tasteless, belonging to environmental protection chemical products. Because the product itself is solid, it is convenient for packaging, transportation and storage, without solvent, pollution and toxicity; And has the advantages of simple production process, high added value, high bonding strength and high speed.

In the process of use, you will encounter "glue is not sticky", "wire drawing problem", "bubbles are generated when the temperature is too high" and "cold sticking phenomenon". In these cases, there is often nothing wrong with the product itself. Take "glue doesn't stick" as an example. There are many reasons why hot melt adhesive is not sticky. It depends on what factors affect its performance. Temperature is one of the most common reasons at present. As the weather turns cold, when bonding materials, the phenomenon that the glue has solidified often occurs. Even if it is not cured, the best bonding effect is missed. Even in some northern areas, the temperature of materials is quite low, which leads to unsatisfactory bonding effect.

When sealing the edge, please pay attention to the following points:

1) Pay attention to the applicable scope of substrates of different models.

2) Before each startup, it is best to seal it with discarded small plates as much as possible, so that problems can be found early.

3) When the ambient temperature is too low, the edge sealing should not be too cold. If it is too cold, it will absorb heat and cool down, which will affect the bonding between edge banding and hot melt adhesive. Ensure that hot melt adhesive should be coated on the plate, and the coating should be thicker in winter than in summer.

4) When the ambient temperature is too low, a lampshade can be made on the turntable of the edge banding machine to heat the edge banding, so as to avoid over-cooling, missing corners or edge bursting.

5) Edge sealing when the ambient temperature is too low. If the edge banding machine has a preheating device, the preheating temperature should be turned on to preheat the plate. At the same time, pay attention to temperature and speed.

6) Due to the large temperature difference between summer and winter, the opening time of hot melt adhesive is different, so pay attention to the temperature change.

7) The use of inventory products should follow the principle of first in first out.