Now many people in distinguish a product is good or bad, basically look at the appearance, think that the appearance is good, then it means that the quality is good, such a selection method is more suitable for some flashy things, but does not apply to the quality of hot melt adhesive distinction. So how to distinguish the quality of hot melt adhesive?
Most of the synthetic resin adhesives are weakly acidic, although the bonding process will not have a negative impact, but the equipment and the bonding material will have corrosion, so we should pay attention to the impact of PH value.
Viscosity is the most important factor affecting the quality, too much viscosity will cause the coating is too thick and wasteful, it will also affect the permeability of the bonding material and directly affect the strength of the bonding, too small viscosity will lead to the coating is too thin, poor bonding and so on.
If you find that the bonded interface is directly pulled apart then it means that the strength is not enough. Therefore, when purchasing hot melt adhesive, we must carefully check the quality problem to prevent unnecessary consequences. The above is about the difference between the quality of hot melt adhesive, it is better to try, if the conditions allow, then you can try it.