Power Adhesives Spraytec 425 Spray Hot Melt Adhesive 43 mm

Power Adhesives Spraytec 425 spray hot melt adhesive is a high-performance, extended-open-time 43 mm hot melt adhesive formulated primarily for professional spray application. It bonds wood, fabrics, most plastics, some metals and concrete and is formulated to maximise adhesive delivery rate.

Spraytec 425, also identified in the technical data as Tecbond 425, is a synthetic polymer-based hot melt designed for fast, clean and reliable operation in TEC spray applicators. Its open time of up to 3 minutes provides additional time for positioning larger components before completing the bond.

The 43 mm format measures 1¾ × 1¾ in (approximately 43 × 43 mm). Carton quantity is 22 lb, approximately 10 kg, with approximately 8 adhesive pieces per pound.

The suggested application temperature is 350°F (approximately 177°C). Brookfield viscosity is 3000 cP at 350°F. The ring-and-ball softening point is 221°F (approximately 105°C), while heat resistance is 176°F (approximately 80°C). Low-temperature flexibility (Tg) is 5°F (approximately –15°C).

According to the manufacturer, the constituent parts of the adhesive comply with applicable FDA requirements under 21 CFR 175.105, subject to its stated limitations. This should not be interpreted as unrestricted approval for direct food contact.

Technical Specifications

• Brand: Power Adhesives
• Product: Spraytec 425 / Tecbond 425
• Type: spray hot melt adhesive
• Adhesive type: synthetic polymer-based hot melt
• Format: 43 mm / 1¾ in
• Dimensions: 1¾ × 1¾ in / approximately 43 × 43 mm
• Colour: light brown
• Molten tack: medium
• Approximate pieces: 8 per lb
• Carton quantity: 22 lb / approximately 10 kg
• Pallet weight: 1100 lb
• Suggested application temperature: 350°F / approximately 177°C
• Brookfield viscosity: 3000 cP at 350°F
• Ring-and-ball softening point: 221°F / approximately 105°C
• Softening point standard: ASTM E28
• Heat resistance: 176°F / approximately 80°C
• Heat resistance standard: BS5350 Part H3
• Open time: up to 3 minutes
• Low-temperature flexibility (Tg): 5°F / approximately –15°C
• FDA compliance: 21 CFR 175.105 subject to applicable limitations

Key Features

• High-performance spray hot melt adhesive
• Extended open time of up to 3 minutes
• Formulated for high adhesive delivery rates
• Bonds wood and fabrics
• Bonds most plastics
• Suitable for some metals and concrete
• Designed for TEC hot melt spray applicators
• Medium molten tack
• 43 mm format for professional applications

Applications & Usage

Spraytec 425 hot melt adhesive is suitable for professional spray bonding where high adhesive delivery and extended positioning time are required. It can be used with wood, fabrics, most plastics, some metals and concrete.

For the 43 mm format, the manufacturer's technical information lists TEC 3150-43, TEC 3200-43, TEC 6100-43, TEC 6300-43, TEC 7100-43 and TEC 7300-43 among the suitable applicators and hot melt systems.

The suggested application temperature is 350°F (approximately 177°C). Suitability should be verified for the specific substrate and bonding process before production use.

Advantages

• Up to 3 minutes of open time for positioning
• Formulated for high adhesive delivery rates
• Bonds a broad range of materials
• Suitable for wood, fabrics and most plastics
• Can also bond some metals and concrete
• Designed for fast and clean spray application
• Compatible with specified professional TEC spray systems
• 43 mm format suits high-output bonding applications

Applications / Industries

• Industrial spray bonding
• Wood bonding
• Textile and fabric bonding
• Plastic component bonding
• Metal bonding
• Concrete bonding
• Product assembly
• Building and construction
• Industrial manufacturing