Special fabric for non-medical face masks (“community masks”) with antiviral and antibacterial properties

Corona virus illustration 100 v img 16 9 xl d31c35f8186ebeb80b0cd843a7c267a0e0c81647

Current Situation

As far as is known, infection with SARS Cov-2 occurs through droplets, which are usually > 5 micrometres (one thousandth of a millimetre) in diameter and carriers of bacteria and viruses. Aerosols are even smaller particles < 5 micrometres that in terms of COVID 19 are not considered to be infectious at least when outdoors.

It is therefore important to avoid further spread of highly infectious “larger” droplets and their contact with other people’s mucous membranes or eyes.

Which masks protect against coronavirus?

Any mask protects against infection to a certain degree. However, the effectiveness of a mask and the contexts in which their use makes sense, depends on each individual’s need for protection. To protect oneself from any kind of droplet, including aerosols, an FFP mask must be worn. The primary purpose of a surgical mask is to keep larger droplets from mask wearers from being released into the environment.

“Generally speaking, standard masks, which also includes surgical masks, inhibit the dissemination of infectious material into the environment. Those carrying the coronavirus are frequently healthy, moving freely and undetected. It would therefore certainly not be unreasonable for everyone (!) to wear a mask when indoors, using public transport or in when shops or offices. It also makes sense to wear masks when it is not possible to maintain a minimum distance of 1.5 metres, which could very well be the case for many activities.”

Dr. med. Andreas Paky, St Gallen, pulmonologist

fabric for non-medical face masks (known as “community masks”) with Swiss HeiQ Viroblock ® Technology

weba has collaborated with the Swiss company HeiQ Materials AG to create a fabric with special properties that is particularly suited for manufacturing non-medical face masks, or “community masks”.

The fabric is treated with the innovative, patent-pending HeiQ Viroblock ® Technology. This technology has an antibacterial and antiviral effect (for details about the extent, please see

fabric selection

weba offers two variations:

  1. weba AVA -100% cotton fabric with HeiQ Viroblock ® Technology and a water-repellent (hydrophobic) finish (spray test 80 according to EN DIN ISO 4920:2012)
  2. weba AVI - fabric blend with 61% cotton and 39% Lyocell with HeiQ Viroblock ® Technology for increased absorption to prevent the fabric against the mouth from becoming damp too quickly.
AVA could, for example, be used for the outer layer of a “community mask”. AVI for the inner layer.


  • Multiple usage possible (washable 30 times at 40°C)
  • Contaminant free according to Oekotex 100 and STeP by Oekotex
  • Comfortable to wear
  • Swiss innovation and Technology
  • Various pattern options

In addition to its use for “community masks,” the fabric is also suitable for further non-medical applications, such as shirts, blouses, lab coats and aprons.

CONDITIONS FOR fabric’s use

  • A license agreement (free of charge) with HeiQ Materials AG ( is required to use the “HeiQ Viroblock” name or logo.
  • Product labeling according to the guidelines of HeiQ Materials AG. In principle, when labeling HeiQ Viroblock ® towards the end user, the local labeling and advertising requirements for biocidal products must be observed, in the EU (including Switzerland) it is the Biocidal Products Regulation (BPR). In the attached document we have summarized the regulations and possible claims (Biocides treated articles).
  • Use as a medical device or for the manufacture of a medical device only if the medical device is CE-certified.