| 摘要 |
<p>A protective garment for protecting the wearer against adverse effects of chemical, biological and like environmental contamination including a body garment defined by a pair of legs, a pair of arms, a body and a hood with the latter including a transparent window and at least two openings, a plurality of ultrasonic welds seaming the components of the garment together, the garment being formed of a laminate including an outer layer defined by an impermeable ply of synthetic polymeric/copolymeric plastic material and an inner ply formed as an admixture of synthetic polymeric/copolymeric plastic material fibers and an adhesive; the plies being fused to each other by the adhesive, the fibers defining a porosity sufficient to function as a filter for relatively large size contaminants in the event the impermeable ply becomes torn, punctured or the impermeable integrity thereof is otherwise damaged; a filter covering one of the openings for filtering contaminated air drawn therethrough as a wearer of the garment inhales, a conduit for conducting a wearer's exhaled air to atmosphere through the other opening, a valve associated with the conduit for preventing contaminated air from entering the garment through the conduit, the conduit being flexible and including within the hood a mouthpiece adapted for retention in the mouth of a user whereby exhaled air egresses the garment directly through the conduit and prevents pressurization thereof and/or fogging of the window, and the filter covering the opening being effeictive to preclude the passage therethrough of contaminant particles 0.3 microns and greater in diameter at an efficiency of 100% at 150 gm/m2.</p> |
