| General Purpose PUR Hot Melt Adhesive | GB/T 16998 | Melt viscosity (120°C):8,000 – 20,000 mPa·s | Temperature range: -40°C to 100°C (long-term) | Curing mechanism: Moisture curing, reacting with moisture in the air. | Opening hours:3 – 10 minutes (providing ample adjustment time) |
| Initial strength (Tack): High, providing immediate setting power after application. | Chemical resistance: Good resistance to solvents and oils. | Storage requirements: Must be stored in a strictly moisture-proof and sealed environment (usually in aluminum foil bags/nitrogen packaging). | Surface drying time: 10-30 minutes (for skin to form) |
| Final tensile strength: 10.0 – 20.0 MPa (after complete curing) | Aging resistance: Excellent resistance to UV aging and hydrolysis (compared to EVA). | VOC: Extremely low | Complete curing: Depends on ambient temperature and humidity, typically requiring 24-72 hours. |
| Shore A hardness (after full curing): 70 – 90 | | | Construction temperature: 110 – 130°C (lower, energy-efficient and safe) |
| Waterproof structural PUR hot melt adhesive | ETAG 002 | Melt viscosity (120°C):15,000 – 30,000 mPa·s (High viscosity, anti-sagging) | Water resistance/weather resistance:ExcellentIt can be submerged in water for extended periods or exposed to outdoor climates, and its performance remains stable. | Chemical crosslinking:It forms a dense, cross-linked network, effectively blocking water vapor penetration. | Opening hours:5 – 15 minutes |
| Final tensile strength: ≥ 15.0 MPa | Temperature resistance: -40°C to 120°C (long-term) | Environmental friendliness: Solvent-free, environmentally friendly | Curing speed: Relatively slow, ensuring deep curing. |
| Elongation at break (after full curing): ≥ 400% (high elasticity, follows substrate deformation) | Excellent resistance to salt spray and chemical media. | | Construction temperature: 115 – 135°C |
| Peel strength: Extremely high | | | Application areas: Waterproofing and sealing of building joints, container manufacturing, automotive structural bonding |
| Flexible composite PUR hot melt adhesive | ASTM F88 | Melt viscosity (120°C): 5,000 – 12,000 mPa·s (low viscosity, beneficial for coating) | Low-temperature flexural strength: Excellent; not prone to cracking at low temperatures. | Hygiene standards:conform toFDARegulations on food contact materials (indirect or direct contact) | Opening hours: 1-5 minutes (suitable for high-speed composite production lines) |
| Final Shore A hardness: 40 – 60 (very flexible) | Resistance to contents: Resistant to oil, fat, and spicy foods (for food packaging) | Low odor, low leaching: Ensures packaging contents remain uncontaminated. | Curing speed: Rapidly builds initial strength under normal temperature and humidity. |
| Elongation at break (after full curing): ≥ 500% | Anti-aging properties: Good | | Application temperature: 105 – 125°C (to prevent burns to the film) |
| T-Peel Strength: High (for films and fabrics) | | | Application methods: Suitable for high-speed roller coating, spraying onto film and fabric surfaces. |
