Acrylic VHB double-sided tape

3M VHB Acrylic Double-Sided Tape is a structural tape with a solid acrylic foam core, designed to replace mechanical fasteners such as screws, rivets and spot welds. Its cross-linked acrylic adhesive builds strength over time, reaching about 90% of ultimate strength after 24 hours and full strength after 72 hours at room temperature, delivering durable bonds even in outdoor environments.

Typical Applications

• Bonding stiffeners and frames for electrical cabinet doors, machine housings and elevators
• Mounting curtain wall glass, signage and outdoor aluminum composite signs
• Securing touchscreens, lenses and bezels in electronic devices
• Attaching rails, trim strips and emblems on cars and specialty vehicles
• Bonding engineering plastics such as PC, PMMA and ABS to powder-coated metal

Key Advantages

1. Distributes stress evenly across the entire bond area, eliminating stress concentrations around drilled holes
2. Clean, flat finished surfaces with no visible screw heads and no post-weld grinding
3. Seals against water and dust while bonding, eliminating a separate sealing step
4. Viscoelastic foam core absorbs vibration and accommodates differential thermal expansion between metal and glass

Key Specifications

Application Notes

Surfaces must be clean, dry and free of oil and grease; wipe with a 1:1 mixture of isopropyl alcohol and water before bonding. The ideal application temperature is 21 to 38 °C; do not apply below 10 °C. After application, press firmly and evenly with a pressure of at least about 100 kPa to ensure full adhesive contact with the surface. For low surface energy materials such as PP and PE, use an adhesion promoter (primer).

VHB bond strength depends on the actual contact area, so the roll-down step is just as important as choosing the right tape thickness.

Contact the technical team at AMS Vietnam for advice on thickness and core color selection, and to request samples for your assembly line.