About HeiQ Viroblock

HeiQ Viroblock is an intelligent Swiss textile technology that is added to the fabric during the final stage of the textile manufacturing process.

HeiQ Viroblock is among the first textile technologies in the world to be proven effective against SARS-CoV-2 in the laboratory. 

Tests have been conducted with a well-known institute in Australia.*

HeiQ Viroblock is designed to inhibit the growth and persistence of bacteria and enveloped viruses on textile surfaces. It’s a unique combination of HeiQ’s advanced silver and vesicle technologies for antiviral and antibacterial effect.

*McAuley J. (2020) Report on “Viral Stability and Persistence of SARS-CoV-2 on Treated Material”.  Doherty Institute for Infection and Immunity, Melbourne.

  • HeiQ Viroblock makes the surface of textiles resistant to microbes and germs

  • HeiQ Viroblock is made of bio-based and recycled ingredients, with each and every ingredient selected from the list of International Nomenclature of Cosmetic Ingredients (INCI).*

That is why we apply the HeiQ Viroblock technology on face masks which is a big advantage during this pandemic.

For more information on HeiQ Viroblock textile technology please visit our technology page under

Test reports

*Analysis report by Specialities s.r.l (2020)

HeiQ Viroblock active ingredients: silver chloride.

TRADEMARKS: HeiQ, HeiQ Viroblock and Viroblock are trademarks or registered trademarks owned by HeiQ Materials AG. The use of such trademark(s) is subject to trademark licensing, review of test report and approval of claims by HeiQ. No unauthorized use permitted. Please contact for more information.


HeiQ Materials AG
Ruetistrasse 12
8952 Schlieren (Zurich)

Phone: +41 56 250 68 50
Fax: +41 56 250 68 41


HeiQ ChemTex Inc.
P.O. Box 5228
Concord, NC 28027

Phone: +1 704 795 9322
Fax: +1 704 792 1417


An der Irler Höhe 3a
93055 Regensburg


Disclaimer: This page reflects the regulatory situation in Switzerland. Not all claims may apply to all countries.

HeiQ Viroblock is marketed as HeiQ V-Block in the USA. Antimicrobial properties built in to protect the product. Product does not protect users or others against pathogens. Always clean the product thoroughly after each use.

© 2020 HeiQ Materials AG, Ruetistrasse 12, 8952 Schlieren (Zurich), Switzerland

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