Hazardous substance removing method, hazardous substance removing material used therein such as air filter, mask, wipe sheet, and the like, and storage method thereof

Publication Date

Patent Number

US7927886B2

Abstract

A face mask is provided that includes a filter body capable of filtering liquids, particles and aerosols of a size appropriate for the mask's intended purposes, while providing excellent breathability and comfort for extended periods of wear. The filter body may be formed from multiple layers of filtration material having a generally rectangular configuration with multiple pleats. The mask may be secured to the head of a wearer by ear loops or surgical tie strips attached to flaps extending from the filter body to form a fluid seal between the periphery of the mask and the wearer's face. For some applications, strips of resilient or stretchable material which further enhance both the fluid seal formed by the mask and comfort for the wearer may be attached along each side of the filter body with surgical tie strips or ear loops attached to the strips of resilient material.

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