• Item Name: LOCTITE® HHD 3630BK
• Manufacturer: Henkel
• Technologies: Polyurethane Hot Melt
• Color: Black
• Cure Type: Moisture and Solidification
• Package Size: Contact to Techniq VN for details.
• Shelf Life: Contact to Techniq VN for details.
LOCTITE® HHD 3630BK is a black, odorless, one-part polyurethane hot melt adhesive that cures through moisture and solidification. It is reactive and provides strong initial strength immediately after solidification at the bondline. Designed for automated or manual assembly lines, it offers chemical and impact resistance with good bonding performance. Full cure is achieved within 1–5 days depending on humidity and substrate conditions, while handling strength is immediate.
Structural adhesive
Electronic structural bonding
Substrate pretreatment recommendations: Clean, dry, and oil-free surfaces; maintain substrate temperature above 20°C; preheating may be applied.
Application methods: Heating cartridge guns or syringe-type melting equipment; reduce temperature during longer rest periods to prevent viscosity increase.
| Property | Value |
|---|---|
| Uncured Material | |
| Technology | Polyurethane Hot Melt |
| Appearance | Black |
| Odor | Odorless |
| Solids Content, % | 100 |
| Density @ 25°C, g/cm³ | 1.1 |
| Viscosity @ 110°C, mPa·s | 6,000 |
| Curing Performance | |
| Open Time @ 25°C, min | >3 |
| Preheating Schedule @ 100°C, min | 20–30 |
| Application Temperature, °C | 100–120 |
| Cure Method | Moisture and Solidification |
| Full Cure Time | 1–5 days (depending on humidity and substrate conditions) |
| Cured Material | |
| Tensile Strength, PC/GF to ink glass, N/mm² | 1h @ 23°C, 60% RH: >3; 24h @ 23°C, 60% RH: >7 |
LOCTITE® HHD 3630BK exhibits immediate handling strength after bonding. Cure rate depends on environmental humidity, substrate moisture, permeability, and adhesive layer thickness. Optimal storage is 8–28°C in unopened containers.
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