FACE MASK Filtering mask made ex art. 16, paragraph 2, D.L. n. 18 of 17/3/2020 and in accordance with the indications of the circular of the Ministry of Health 0003572-P-18/03/2020 Distributed by DEFCONSERVICES by Danila Maffei IT IS NOT A MEDICAL DEVICE / NOT A PPE.
The mask is made of water-repellent treated polypropylene with an antibacterial net to which a layer of SMS (TNT SPUNBOND-MELTBLOWN heat-sealed) has been applied as per Technical Note v 5.0 of 04/05/2020 of the Politecnico di Milano.
The filtering part is made by overlapping 3 layers of non-woven fabric (TNT) with different functions:
1) EXTERNAL LAYER (WORLD SIDE): Non-woven fabric (TNT) produced with SPUNBOND technology with hydrophobic treatment; this layer has the function of giving the mask mechanical strength and hydrophobic properties.
2) INTERMEDIATE LAYER (FILTER LAYER 40 g / m2): Non-woven fabric (TNT) produced with MELTBLOWN technology and made up of 1-3 micron diameter microfibers; this layer performs the filter function.
3) INTERNAL LAYER (FACE SIDE): Non-woven fabric (TNT) produced with SPUNBOND technology; this layer has a protective function for the face avoiding direct contact of the skin with the intermediate filtering layer.