respirador do tipo peça facial filtrante e método para a produção de um respirador do tipo peça facial filtrante

A filtering face-piece respirator 10 that has a support structure 16 and a filtering structure 18. The filtering structure 18 includes first and second transversely extending members 26, 28 that can move toward and apart from each other in the longitudinal direction. The filtering structure 18 has a filtration layer 52 and a pleat 58. The pleat 58 allows the filtering structure 18 to contract and expand when the first and second transversely-extending members 26, 28 move toward and apart from each other, respectively. This ability to expand and contract in an accordion-like manner enables the mask body to better accommodate wearer jaw movement.