Let’s Know about the Sequencing of Reactive Hot Melt Adhesives

Reactive Hot Melt Adhesives

The **Reactive Hot Melt Adhesives **goes through a physical setting mechanism in the first stage, which gives the adhesion a certain degree of hardness. This hardness is adequate for further processing or transportation. Chemical crosslinking occurs in the second stage, which can last hours or days depending on the type of adhesive. This chemical reaction is dependent on the availability of moisture and the proximity of the glue joint to moisture. After fully reacted, the hot melt adhesive loses its thermoplastic properties, which means it does not soften again, even when the object to be bonded heats up. The resulting thermoset has the exceptionally good adhesion values of the polyurethane, combined with high strength, high heat resistance, good low-temperature flexibility and good solvent resistance.

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