Nanofiber is a relatively new technology that is disrupting industries around the world. Nanofibers are usually about 50-500 nanometers in diameter, depending on the type of polymer and specifications.
Nanofiber is an ultra fine, network of microscopic fibers that are nanometers in diameter but kilometers in length. It's like one long strand of spaghetti!
We utilize a process called electrospinning. The process requires a high voltage electric field with positively and negatively charged ends. The polymer is loaded at one end of the field and stretched to the oppositely charged end, creating a long, thin strand. This results in a network of nanofibers which is spun directly onto a base layer for backing and support.
The web of continuous, overlapping fibers catches larger particles and prevents them from exiting out the other side. As more particles become trapped in the net, a sort of filter cake is formed throughout the material. This helps to improve the overall filtration efficiency of the media overtime.
Nanofiber networks have high porosity and a large surface area-to-volume ratio which makes them extremely useful in filtration applications. Many filters on the market today use electrostatic forces to attract and capture particles, but they are often not as effective because they are not able to trap larger particles and lose their static charge. Mechanical filters, such as our nanofiber material, tend to have higher initial/ongoing efficiencies which leads to longer filter life and cleaner air.