Beltone HPF80 NanoBlock™ Technology

While regular hearing aid maintenance is always recommended, hearing instruments that have been coated with HPF80 NanoBlock contain a layer of preventative maintenance. This helps protect your hearing instruments from moisture and particulates that can otherwise enter the delicate circuitry and cause damage.
Discover more below

What is HPF80 Nanoblock?

HPF80 NanoBlock is a protective polymer film coating that is about 1/1000 the thickness of an average human hair. How can something so nanoscopic provide so much protection? It’s all in the way the coating is applied and how it adheres to the surface material. When HPF80 NanoBlock is applied, it forms a molecular bond with the host material so while very thin, it is also very strong.

Why do hearing instruments need HPF80 NanoBlock protection?

When you think about it, hearing instruments spend most of their time in pretty challenging environments. They live in a place that produces moisture and ear wax and are constantly being handled. Couple that with elements like sweat, rain, hair products and dust and you can see why any extra protection is worth it!

Beltone HPF80 NanoBlock water droplets Beltone HPF80 NanoBlock

How does nano coating work?

In a nutshell, nano coating changes the surface properties of the host material in a way that causes liquids to bead up and either roll off or be removed easily. The following visual shows how water beads up on a nano coated surface more than water on a non-coated surface. Without nano coating – or HPF80 NanoBlock – the water spreads out across the surface.

While earlier nano coating methods were only applied to certain parts of the hearing instruments – usually the outer shells - HPF80 NanoBlock is applied to the entire instrument, both inside and out, for the most complete protection. To illustrate the thoroughness of this protection, we have created a demonstration with compressed sponges. As you will see, the yellow sponge, which is not coated, expands immediately when introduced to water. On the other hand, the blue, HPF80 NanoBlock coated sponge just floats, stays flat and any water simply beads up on the surface.

Non-coated vs HPF80 NanoBlock coated
Left: Non-coated. Right: HPF80 NanoBlock coated

Non-coated vs HPF80 NanoBlock coated
Left: Non-coated. Right: HPF80 NanoBlock coated

Can you see HPF80 NanoBlock at work?

The beauty of HPF80 NanoBlock is that it is undetectable to the eye and to the touch. However, while this coating is only nanometers thick, it provides protection even in the harshest conditions. To verify the hardiness of HPF80 NanoBlock, coated and non-coated devices were put through a rigorous set of tests that exposed the hearing instruments to potentially damaging enviornmental elements. To illustrate how well HPF80 NanoBlock protects your hearing instruments, all you have to do is take a look at the test result photos.

Without Nano Coating

Without Nano Coating
  • Debris build up
  • Solder joints with some corrosion
  • Corrosion on printed-through holes.

With HPF80 NanoBlock

With HPF80 NanoBlock

As you can see, the hearing instrument without HPF80 NanoBlock protection has suffered from corrosion as opposed to the HPF80 NanoBlock coated device, which looks as good as new.

How can I make sure my hearing instruments are protected with HPF80 NanoBlock?

All Beltone hearing instruments are protected with HPF80 NanoBlock coating.  

HPF80 NanoBlock Biocompatibility Certificate