Henkel Technomelt PA 633 N Automotive Firewall Polyamide Hot Melt Adhesive

Technomelt PA 633 N for High Temperature Automotive Molding Applications

Technomelt PA 633 N is an amber polyamide hot melt adhesive engineered for demanding automotive molding applications, including firewall assemblies. It delivers dependable heat stability in elevated temperature environments while forming a strong, resilient thermoplastic barrier after cooling. Optimized for molding performance, it provides consistent adhesion and long-term durability in challenging automotive conditions.

Performance Benefits of Technomelt PA 633 N

• High Temperature Stability: Temperature creep resistance up to 311°F (155°C) supports durable performance in elevated heat environments.
• Reliable Automotive Molding Performance: Engineered for consistent processing in demanding automotive applications, including firewall assemblies.
• Durable Thermoplastic Barrier: Solidifies by physical setting to form a tough protective layer after molding.
• Balanced Mechanical Properties: Shore A 90 hardness provides a strong yet resilient encapsulant.
• Low Viscosity Processing: Enables efficient mold fill and reliable adhesion across a variety of substrates.

Specifications

• Series: Technomelt PA 633 N
• Type: Hot Melt Adhesive
• Application: Molding
• Chemistry: Polyamide
• Components: One-Component
• Cure: Physical Setting
• Color: Amber
• Application Temperature: 392 – 464°F (200 – 240°C)
• Operating Temperature Range: -40 – 266°F (-40 – 130°C)
• Softening Point: 338 – 356°F (170 – 180°C)
• Melting Viscosity:
• 5,000 cps @ 392°F (200°C)
• 2,800 – 4,000 cps @ 410°F (210°C)
• 2,900 cps @ 428°F (220°C)
• 2,300 cps @ 446°F (230°C)
• Density: 0.98 g/cm³ @ 68°F (20°C)
• Shore A Hardness: 90
• Yield Strength: 652 psi (4.5 N/mm²)
• Break Strength: 754 psi (5.2 N/mm²)
• Elongation: 300%
• Temperature Creep Resistance: 311°F (155°C)
• Low Temperature Flexibility: -22°F (-30°C)
• Glass Transition (Tg): -32.8°F (-36°C)
• Shelf Life: 24 Months (when properly stored)