ABSTRACT
Objective: to develop a model of fabric mask, with the application of a cellulose filter element, for use as a safe physical barrier for aerosols, as an emergency response strategy for the SARS-CoV-2 pandemic. Method: laboratory research carried out by means of prototypes, empirical tests and analyses, and discussions with experts. Results: the research demonstrated that aerosols are retained by the physical cellulose barrier introduced into the structure of the masks, which motivated the second phase of the study into the effectiveness of these materials at a unit of the Brazilian Analytical Health Laboratories Network. Conclusion: the making of fabric masks is an important and urgent worldwide phenomenon in tackling the COVID-19 pandemic. In view of the supply crisis and the parameters highlighted in this study, it is believed that the use of this equipment can be extended to non-critical sectors of health units, as well as to the general population. © 2020, Centro de Estudos da Faculdade de Enfermagem da UERJ. All rights reserved.