Protective mask against biological agents made of two parts

Process for manufacturing personal protective equipment for the respiration characterized in the following steps:

• cutting rectangular pieces of the fabric through a cutting shaped hollow punch (also creating the hole for the value, if required)
• fixing the accessories, if any, as gaskets, valves, clips, adhesive band
• overlapping two rectangles of fabric to create the two parts of the PPE
• joining the materials along the curved profile of an arc (and junction of the valve, if any)
• cutting using a circular shaped hollow punch (and creation of the two strips where to put the elastic band-holders)
• fixing the elastic bands (subject to fix the elastic band holders)

Process for manufacturing personal protective equipment for the respiration with multi-layer structure, complete with an exhaling valve, gaskets, adhesive band, strips for the elastic band holders, elastic band holders and elastic bands, characterized in the following steps:

• the layers of fabric are overlapped in order to create the upper part and, in the same way, the layers of fabric to create the lower part are overlapped as well,
• using a shaped hollow punch cutter, some rectangles are cut for the upper part and some for the lower part with a hole for the valve,
• the different layers of the upper part are ultrasonic welded in the area of the straight profile of the protective equipment and in the area of the edges in order to place the elastic band holders,
• the same thing for the lower part and the valve is placed using the ultrasonic welding where the hole is located,
• some EVA stripes are jointed through an adhesive to create the gaskets for the lower part,
• some EVA stripes are jointed through an adhesive, a nose clip put in between, in order to create the gaskets for the upper part,
• using a hollow punch cutter the stripes are shaped and then attached with the adhesive to the correspondent parts,
• a bi-adhesive tape, with a peel-off protective film, is put on the upper part, behind the nose clip,
• the upper and lower parts are jointed through ultrasonic welding along the curved profile of the round part,
• through a shaped cutter the protective equipment is cut along the perimeter that includes the two edges to place the elastic band holders,
• the two elastic band holders are fixed on the two edges through an ultrasonic welding,
• therefore the elastic bands are put into the elastic band holders.