Nanofiber

Nanofibres are fibers having a fiber diameter of less than 500 nanometers (nm). In a modern fine dust filter, for example, is this ideally 200 nm, but can be up to 800 nm. According to the company Hills, Inc., the fiber diameter between 50 and 300 nm varies

Application

The use of nanofibers currently focuses on the air filter industry. Here a distinction is made between two materials, find the standard in air filter mats using, glass and synthetic fibers. The manufacturers of fiberglass for air filters have many years of experience with integrated nanofibers. In contrast, the processing of integrated nano- fibers in synthetic fiber webs is a bit younger.

The benefits of integrating these ultra thin fibers in an air filter fabric is made clear by the slip- flow effect. They differ effectively from fine and ultrafine particles and at the same time have such a low coefficient of friction that they are energetically very interesting in terms of the pressure difference.

Manufacturing process

Nanofibers are always processed in a composite nonwoven. For synthetic nonwoven fabrics, this means that during the manufacture, for example, by electrospinning, with other methods, such as melt spinning, among others, are combined to form a bond with microfibers. Moreover, other support or protection fleeces additive added to the micro-nano - fiber composite, so that a composite membrane arises. In the glass fiber nonwovens blast drawing for the production of air filter mats with nano-scale fibers is very common.