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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..
Pearl cotton, also known as EPE, is a foamed polyethylene polymer. Pearl cotton has many advantages such as water and moisture resistance, shock resistance, sound insulation, thermal insulation, good plasticity, strong toughness, recycling, environmental protection, strong impact resistance, and good chemical resistance. Features: low density, good flexibility, high recovery rate; Better shock resistance than polystyrene […]
Direct answer: The reason for the broken glue when flipping pages in the adhesive book is that the glue layer has not penetrated into the back of the book and the glue layer is brittle. The solution needs to start from four aspects – milling and slotting should be in place, the temperature and amount […]
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 […]
There are various types of hot melt adhesives with different uses and compositions, generally classified according to their chemical composition and uses. 1、 Polyolefin hot melt adhesive Polyolefin hot melt adhesives include polyethylene hot melt adhesive and polypropylene hot melt adhesive. Polyethylene (PE)is polymerized from ethylene with a small amount of alpha olefin or other […]
