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The main components of EVA hot melt adhesive play a crucial role in its performance.
Main types: ethylene and its copolymers, polyolefins, polyesters, polyurethanes, polyamides, styrene and its block copolymers, and other polymers.
The impact on the properties of hot melt adhesive: adhesive strength, melt index, softening point, viscosity, flexibility, curing speed, and thermal stability.
Improve wetting and initial adhesion.
Main types: rosin and its derivatives, terpenes and modified terpene resins, petroleum resins.
The influence of hot melt adhesive performance: Reflected in adhesive wettability ↑, initial viscosity ↑, adhesive strength ↑, viscosity ↓, heat resistance, and exposure time.
Increase the fluidity of colloids, adjust the solidification speed, and achieve the goal of rapid bonding and firmness.
Main types: paraffin wax, microcrystalline wax, synthetic wax.
The influence on the properties of hot melt adhesive: melt reaction index ↑, flowability ↑, exposure time ↓, creep resistance, flexibility, melting speed, self-adhesive performance, cohesive strength ↓, adhesive strength ↓
Improve the thermal stability of EVA hot melt adhesive.
Main types: Phenol and its derivatives.
The influence of hot melt adhesive performance: reaction heat aging rate ↓, viscosity stability ↑, color stability ↑, adhesive strength
Improve the brittleness and flexibility of EVA hot melt adhesive.
Main types: aliphatic mineral oil, dioctyl phthalate, dibutyl phthalate, liquid paraffin.
The influence of hot melt adhesive performance: Reflected in hardness ↓, modulus ↓, brittleness ↓, elongation ↑, flexibility ↑, flexibility ↑
Improve performance and reduce costs.
The influence of EVA hot melt adhesive performance: reactions in heat resistance, heat capacity, shrinkage rate, permeability, self adhesiveness, flowability, viscosity, crystallization rate, adhesive strength, peel strength, and other aspects..
Why does EVA hot melt adhesive have wire drawing? Occasionally, when the nozzle of the equipment is turned off, there may be a small amount of filament residue, causing equipment contamination or sticking to the side of the guide rod, pressure plate, etc., which can cause problems with the appearance and operation of the box […]
What is the packaging adhesive industry? There are many types of adhesives in the packaging industry, and many different types are used according to the situation. To laminate adhesives for flexible packaging, or to use combinations of different materials such as printing layers, or just some examples of these different situations. If necessary, high-speed bonding […]
The use of hot melt adhesive requires appropriate preparation and preheating to ensure smooth operation. 1. Glue Add an appropriate amount according to the amount of glue used and the size of the hot melt glue pool. During normal use, maintain a liquid level range of 35% -80% in the sol tank. If the amount […]
Hot melt adhesive particles are solid adhesives that are heated above their melting point before being applied to a substrate. According to the desired application, hot melt adhesive has various appearances and textures. They do not require a curing or drying period as they quickly solidify when cooled to the freezing point. Therefore, hot melt […]
