A pleated, disposable, liquid-resistant face mask formed of a three-ply or four-ply composite laminate structure that is conformable to the shape of the wearer\s face. The three-ply face mask has a first ply formed of a non-woven material, a carded cotton material, and a creped tissue wadding materi
A pleated, disposable, liquid-resistant face mask formed of a three-ply or four-ply composite laminate structure that is conformable to the shape of the wearer\s face. The three-ply face mask has a first ply formed of a non-woven material, a carded cotton material, and a creped tissue wadding material; a second ply formed of a non-woven, meltblown, polypropylene material; and a third ply formed of a non-woven, thermobond, polypropylene material. In the four-ply mask,there is an additional ply of non-woven, colored, spunbond, polypropylene material which may be of any color and acts as the face-contacting surface of the face mask.
대표청구항▼
A pleated, disposable, air permeable, liquid-resistant face mask having three plies of material, comprising: a) a first face-contacting ply of liquid-resistant material formed of a non-woven paper pulp material, a carded cotton wadding material, and a creped tissue wadding material for filtering out
A pleated, disposable, air permeable, liquid-resistant face mask having three plies of material, comprising: a) a first face-contacting ply of liquid-resistant material formed of a non-woven paper pulp material, a carded cotton wadding material, and a creped tissue wadding material for filtering out organic and inorganic particulate matter; b) a second ply of liquid-resistant material formed of a non-woven, polypropylene material to form a first filter barrier for filtering out organic and inorganic particulate matter; c) a third ply of liquid-resistant material formed of a non-woven, polypropylene material to form a second filter barrier for filtering out organic and inorganic particulate matter; d) said first, second, and third plies being folded relative to each other to form pleated and overlapping sections which expand relative to each other during use; e) a flexible stiffening member disposed within said mask and being bendable to conform to the shape of the wearer\s face; f) the edges of said first, second, and third plies being attached to form a composite laminate structure; and g) fastening means for fastening said face mask to the wearer\s face.
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이 특허를 인용한 특허 (27)
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