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Filtering face-piece respirator with stiffening member integral with filtering structure
Filtering face-piece respirator with stiffening member integral with filtering structure
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机译:具有与过滤结构一体的加强构件的过滤式面罩呼吸器
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摘要
A filtering face-piece respirator 10 having a mask body 12 formed of a filtering structure 16. The mask body 12 has at least one transversely extending stiffening member 50, formed by an s-shaped or tri-fold pleat permanently connected, such as by welding. The at least one stiffening member 50 increases the integrity of the mask body 12, when in the opened cup-shaped configuration, inhibiting collapse of the mask body, due to, for example, increased pressure drop across the mask body 12 due to dirty or moisture laden air.
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