1. Basic resin
3. Viscosity conditioner
Viscosity conditioner is also one of the main additives of hot melt adhesives. Its function is to reduce the melt viscosity, increase mobility, wettability, and adjust the solidification speed to achieve the purpose of fast bonding and firmness.
The colloid will be oxidized and synthesized due to the high temperature when it is melted. Adding an appropriate amount of antioxidant can avoid the premature aging of the hot melt adhesive. Moreover, under high temperature conditions, with an appropriate amount of antioxidants, the viscosity of the adhesive will not change, which is enough to ensure the binding effect of the books.