3M VHB tape full-dimensional dismantling from principle to practice
1. What is VHB tape?
VHB (Very High Binder) tape, made of an acrylic foam backing and a double-sided pressure-sensitive adhesive layer, is ideal for many interior/exterior bonding applications. In some cases, it can replace rivets, spot welding, liquid adhesives and other permanent adhesives. Acrylic foam is actually viscoelastic and has the characteristics of energy absorption and stress relaxation. This gives the tape unique properties: 1. When the VHb foam core layer deforms under external force, it can fully absorb the stress generated by the deformation and can withstand deformation of at least three times its own thickness. 2: Stress buffering, the foam structure absorbs 80% of the thermal expansion and contraction deformation to avoid glass/metal cracking.
In iconic buildings such as the metal curtain wall of the Burj Al Arab in Dubai and the steel structure roof of the Walt Disney Concert Hall in Los Angeles, VHB tape uses an invisible connection method to achieve a zero-screw design. After aging for more than 5 years in an outdoor aging field in Minnesota, the adhesion retention rate of VHb tape reached more than 100%. After 1000 hours of 85℃/rh85% test in the 3M aging test chamber, the VHb bonding strength remained unchanged. It makes people sigh at this almost terrifying bonding strength retention rate. These cases also show the strong performance of VHB tape.
2. Technical parameters and selection guide
| Model number | 4910 | 5608A | 4910F |
|---|---|---|---|
| Color | Transparent | white/grey | transparent + white release paper |
| Thickness (mm) | 1.0 | 0.8 | 1.0 |
| Temperature resistance (℃) | -40~149 | -29~93 | -40~149 |
| Application scenario | Glass curtain wall/electronic screen | Home Appliances/signage | The scenario needs to be temporarily located |
Very High Binder tape has a wide range of applicability and can be used on materials such as aluminum alloy, stainless steel, pc-abs, ink glass, pure glass, etc. For example, if transparency is required for application in building materials, it is recommended to choose model 4910. VHB tape is the most efficient invisible connection solution in the industrial field; if you need to withstand high and low temperatures in the in-vehicle environment, please choose 4959F (passing 2000 hours of UV test can eliminate your concerns).
If temporary positioning is required, please choose the 4910F model.
If you have cost constraints, it is recommended that you choose the 5608A (30% lower price).
Three best application scenarios
1. Building curtain wall installation, use 4910 tape instead of corner code to perfectly solve the problem of steel structure affecting lighting at the glass joint.
2. Auto parts assembly, use 5608A tape to avoid the problem of parts falling off due to temperature and vibration.
3. Consumer electronics fixation, 4910F tape with "tear-type" release technology to achieve traceless disassembly to protect the surface of the device.
3. Environmental innovation
In recent years, 3M has launched VHB extrusion tape to meet environmental protection needs, and realizes efficient production of "squeeze and stick" through an automated customized bonding system. This product uses stretch removal technology, which can be repeatedly positioned without damaging the substrate, reducing material waste by 20% compared to traditional adhesives, and reducing industrial water consumption by 85%. In the growing field of new energy vehicles, its low VOC characteristics and FDA food contact certification make it an ideal choice for battery pack sealing and interior bonding.
4. Summary
As a benchmark product in the field of industrial bonding, 3M VHB tape breaks through the boundaries of materials with its unique structure. As global green manufacturing standards advance, VHB tape is evolving from a single bonding tool to a key component for sustainable production. In the future, with the popularization of smart buildings and lightweight materials, this technology, which was born in 1979, will continue to reshape the boundaries of industrial aesthetics and efficiency with "invisible steel structures."
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