Mask and method for producing masks

A facemask manufacturing process comprising:

• providing a first and a second assembly of strips superposed one on the other, the first assembly of strips (40) comprising a first strip (21) of filtering material, a second strip (22, 221) of filtering material and a first elastic strip (26) interposed between the first strip (21) of filtering material and the second strip (22, 221) of filtering material;
• the second assembly of strips (50) comprising a third strip (222) of filtering material, a fourth strip (23) of filtering material and a second elastic strip (27) interposed between the third strip (222) of filtering material and the fourth strip (23) of filtering material, the first strip (21) of filtering material, the second strip (22, 221) of filtering material and the first elastic strip (26) being superposed on the fourth strip (23) of filtering material, the third strip (222) of filtering material and the second elastic strip (27), respectively;
• then
• fixing the first strip (21) of filtering material to the fourth strip (23) of filtering material along a first weld line (60);
• fixing the second strip (22, 221) of filtering material to the third strip (222) of filtering material along a second weld line (61);
• and then
• a step of cutting the first and second assemblies of strips in order to form, in a top-to-tail position, a first facemask and a second facemask respectively having a median line (183) corresponding to the first weld line (60) and to the second weld line (61) and orifices (65, 165, 166) intended for receiving the user's ears.