In recent years, something called “nano tape” has become popular on the Internet and has gradually entered people’s lives. This is a new type of soft and transparent double-sided tape. In advertisements, its selling point is that it has an amazing adhesive force that “will not fall off even if the wall collapses”, and it can be torn off without leaving any marks. From fixing various storage artifacts in rental houses to pasting Spring Festival couplets, gluing cameras, tying pain packs, and making pinch toys, the magical “nano tape” seems to be omnipotent.
What exactly is “nano tape” and is it really that powerful? What is called “nano tape” on the market is actually some transparent gel-like pressure-sensitive double-sided adhesive, most of which are made of polyacrylate, and some are made of polyurethane and other materials.
VHB Double-Sided Tape
The most representative product of this type of tape is 3M’s VHB series tape. VHB stands for “Very High Bonding”, which simply and crudely demonstrates its strong bonding characteristics. This tape is made entirely of viscoelastic polyacrylate from the bonding surface to the inside. In addition, VHB tape is also a foam double-sided tape. There are many closed small bubbles of micron size inside the tape, which can also help disperse stress and make the bond stronger.
Are there really nano materials in nano tape?
“Nano tape” is more of a promotional concept, it is not the official name of these products. There are few descriptions related to “nano” in relevant technical documents, and the bonding principle of pressure-sensitive adhesive itself has nothing to do with nano. The “nano tape” on the market may not have nano, but pressure-sensitive adhesive can indeed add real nano materials. For example, the use of carbon nanotubes can improve the heat resistance of acrylic pressure-sensitive adhesive.
In short, the pressure-sensitive double-sided adhesive known as “nano tape” is indeed easy to use and has excellent performance.