Disposable face mask with multiple liquid resistant layers
OwnerThawatchai Maturaporninventor
Life of this patent
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Abstract
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.
Claims39
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.
A pleated, disposable, air permeable, liquid-resistant face mask having four plies of material, comprising:
- a) a first ply of liquid-resistant material formed of a non-woven, colored, spunbond, polypropylene material which forms the face-contacting member;
- b) a second ply of liquid-resistant material formed of a non-woven paper pulp material, a carded cotton wadding material, and a creped tissue wadding 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) a fourth ply of liquid-resistant material formed of a non-woven, polypropylene material to form a third filter barrier for filtering out organic and inorganic particulate matter;
- e) said first, second, third, and fourth plies being folded relative to each other to form pleated and overlapping sections which expand relative to each other during use;
- f) a flexible stiffening member disposed within said mask and being bendable to conform to the shape of the wearer's face;
- g) the edges of said first, second, third, and fourth plies being attached to form a composite laminate structure;
- and
- h) fastening means for fastening said face mask to the wearer's face.
A pleated, disposable face mask in accordance with claim 20, wherein said first ply has a material thickness of 0.225 mm, a weight of 35 g/m.sup.2, and an elongation factor of 50 percent.
Dependencies are inferred from the claim text.