Conventional hot melts are applied at 170–200 °C. Low-temperature hot melts are formulated to run at 120–150 °C.
Advantages
- Energy savings: Melters and hoses use less energy.
- Less charring: Less degradation in the tank and fewer blocked nozzles.
- Heat-sensitive substrates: Thin PVC foil, foam, thin film and some textiles can be bonded without deforming.
- Safety: Lower burn risk and less fume.
Points to watch
A lower application temperature usually means lower heat resistance. Consider what temperature the product will see in service (for example a closed vehicle or warehouse in summer).
| Property | Standard | Low-temperature |
|---|---|---|
| Application temperature | 170–200 °C | 120–150 °C |
| Energy use | High | Low |
| Charring risk | Higher | Lower |
| Heat resistance | Usually high | Depends on formulation |
Which industries?
They are widely used in packaging (especially metallocene-based PO hot melts), thin-foil lamination and hygiene products. Before switching, check that existing equipment runs stably at the lower temperature.
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