• Item Name: LOCTITE HHD 3607BK
• Manufacturer: Henkel
• Technologies: Polyurethane Hot Melt, Reactive Polyurethane
• Color: Black
• Cure Type: Solidification and Moisture
• Package Size: Contact to Techniq VN for details.
• Shelf Life: Contact to Techniq VN for details.
LOCTITE HHD 3607BK is a black, one-part reactive polyurethane hot-melt adhesive formulated for robotic jetting applications and automatic assembly lines. It cures via moisture and solidification, providing fast handling strength immediately after bonding, and develops superior toughness when fully cured. The adhesive is jettable, exhibits high impact resistance, excellent adhesion strength, and will not remelt once cured. Its viscosity and open time are optimized for efficient device assembly and structural bonding processes.
Device assembly
Structural bonding
Robotic or automated line dispensing
| Property | Before Mixed / Uncured | After Cured |
|---|---|---|
| Viscosity (Brookfield, 110 °C, mPa·s) | 6,500 | – |
| Open Time (minutes) | ≥2 | – |
| Preheating Schedule | 20–30 min @ 110 °C | – |
| Application Temperature (°C) | 100–120 | – |
| Elongation at Break (%) | – | 880 |
| Tensile Modulus (N/mm²) | – | 60 |
| Tensile Strength (N/mm²) | – | 29 |
| Light Transmittance, 0.2 mm @ 550 nm (%) | – | 0.38 |
| Cross Tensile Strength (PC/20% Glass filler, 2 h, N/mm²) | – | 2.1 |
| Cross Tensile Strength (PBT/40% Glass filler, 2 h, N/mm²) | – | 2.0 |
| Lap Shear Strength (PC/20% Glass filler, 24 h, N/mm²) | – | 11.2 |
| Lap Shear Strength (PBT/40% Glass filler, 24 h, N/mm²) | – | 6.5 |
| Hot Strength @ 55 °C (PC/20% Glass filler, N/mm²) | – | 3.8 |
| Hot Strength @ 55 °C (PBT/40% Glass filler, N/mm²) | – | 2.7 |
| Dupont Impact Strength (PC/20% Glass filler + MgAl, 3 days, mJ) | – | 233 |
| Dupont Impact Strength (PBT/40% Glass filler + MgAl, 3 days, mJ) | – | 119 |
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