Plastic Film Capable of Eliminating 99.84% of COVID-19 Particles

Promaflex, the manufacturer of the film uses technology developed by Sao Paulo-based Nanox (https://en.nanox.com.br/). It uses the silver and silica nanoparticles built into its polyethylene structure. The adhesive plastic film is designed to protect surfaces such as handrails, doorknobs, touch screens, etc. It inactivates the SARS-CoV-2 on contact. The tests conducted at the University of São Paulo’s Biomedical Sciences Institute’s BSL-III lab determined that the film is capable of neutralizing 99.84% of viral particles just after two minutes of contact.

The trials performed to measure the film’s capability were in line with ISO 21702:2019. The silver-silica nanoparticles are added to the polyethylene during its production so that the film’s antimicrobial action persists throughout its working life. The innovator of this technology recommends the use of the film for about 3 months. In partnership with toymaker Elka, a reusable face-covering made of flexible thermoplastic coated with an additive as a surface layer was developed. In early August the product was approved by ANVISA for FFP2 mask for use in PPE. The silver-silica nanoparticles have also been used to coat fabric for  anti-COVID-19 apparels.

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Ref link: https://g1.globo.com/sp/sao-paulo/noticia/2020/06/16/pesquisadores-desenvolvem-tecido-com-microparticulas-de-prata-capaz-de-eliminar-por-contato-o-coronavirus.ghtml

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