Copper 3D – the Chilean manufacturer of antibacterial filaments, was one of the first companies to create its own model N95 protective mask. This aroused some controversy, but since then, specialists from Copper 3D have been constantly researching how to improve their solution. Today, they have released a new version of the project – NANOHACK 2.0, protective mask that is even more effective in preventing COVID-19 infection.


According to the creators, the advantage of their protective mask is the possibility of using antibacterial materials for its production, which – in contrast to standard masks – neutralize viruses and microorganisms that can remain active on the surface for up to 72 hours. Copper3D has posted on their site, that their design is intended for use in specific cases. The main task of the mask is to protect against infected saliva droplets of infected people who carry the virus.

The creators advise against making N95 masks from standard 3D printing materials. They recommend antibacterial materials. However, they point out that by making the model available to the public under an open-source license, Copper3D is open to collaboration with users that will lead to further improvements to the model.

mask n95 copper3d

Copper3D proves the effectiveness of its solution, based on scientific publications, writing that “filtration materials used in the protective mask (polypropylene nonwoven) allow to achieve filtration efficiency of 96.4% for microorganisms 1 micron and 89.5% for microorganisms 0.02 microns They also emphasize the importance of careful management of used filters and why antibacterial materials are suitable for the production of protective masks.The nanomedium contained in their filaments inhibits the multiplication of SARS-type viruses (including COVID-19), which reduces the risk of infection.

In their research, they tested filters consisting of three layers of polypropylene fiber, where one of them was saturated with copper oxide. Research suggests that the chemical used allows for better virus filtration.

At the same time, Copper3D, being aware that not everyone has access to specialized filters, tested various materials (including a cotton T-shirt, scarf or vacuum cleaner bag) for filtering bacteria. Results below:

The company notes that:

  • their mask model is not an N95 mask, this is Copper3D’s own interpretation of the protective mask,
  • it should not be used as a personal protective equipment in high-risk stations, treated as a tool to minimize the risk of infection,
  • it should be used for a maximum of 8 hours a day, and then discard the used filter,
  • it is necessary to properly care for the cleanliness of the mask by using it in clean, soapy water. Copper antibacterial materials must be decontaminated chemically (e.g. with high-grade alcohol),

Protective N95 Mask from Copper3D

See also:

Magdalena Przychodniak
Editor-in-Chief of the 3D Printing Center. A biomedical engineer following the latest reports on bioprinting and 3D printing in modern medicine.


  1. Works if you are small, have a narrow nose, and don’t wear glasses.

    In my “test group”, the mask only fit 1 of 5.

    1. I got a heat gun on the bits that didn’t seal and softened it. Held it tightly to my face and got a near perfect seal after 2-3 attempts. I do wear glasses. Am working on modifying the top of the nose seal and the filter and will upload when complete.

    2. I’m going to attempt a silicone face weld with some materials I have around the shop, but in a pinch, you could put the mask in hot water until it softens a little, and then form it to your face,

Comments are closed.

You may also like

More in News