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Index >> FAQ >> Products Faq

What Is the Difference Between PUR and EVA Hot Melt Adhesive?

Category:Products Faq

The main difference between PUR and EVA hot melt adhesive is their bonding mechanism and long-term performance characteristics.

FeaturePUR Hot Melt AdhesiveEVA Hot Melt Adhesive
Bonding mechanismCooling followed by moisture curingMelting and cooling
Final structureCrosslinked after curingThermoplastic
Moisture resistanceGenerally higher, depending on formulationDepends on formulation
Heat resistanceGenerally higher, depending on formulationDepends on formulation
ReworkabilityMore difficult after curingCan generally be softened by reheating
Processing sensitivityRequires greater attention to moisture and handlingGenerally simpler to process
Typical positioningDemanding, durable bonding applicationsEfficient and cost-effective bonding

PUR is often selected when higher durability and resistance to heat or moisture are important. EVA can be suitable when conventional thermoplastic hot melt bonding provides sufficient performance and production efficiency.

The best choice depends on the substrate, bonding material, equipment, production conditions, required performance and total application cost.


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