Anti-dust mask having a circular pad part and a fixture for a filter part

Abstract

The present invention relates to an anti-dust mask. The anti-dust mask ( 1 ) includes: a pad part ( 2 ) to which a sheet is closely attached to a front surface using thermal press forming, wherein a polyurethane film ( 202 ) adheres to the inner surface of the sheet and a spandex fabric adheres to the outer surface of the sheet; a fixture ( 3 ) for a filter part, to which the pad part and a disposable filter part adhere; a hemispherical filter part ( 4 ) defining a front space to filter contaminated air; and a one-way exhaust valve ( 8 ). Curves are formed on the pad part such that the pad part can be closely attached to the curvature of the face. The pad part ( 2 ) and internal/external wing parts ( 201, 302, 201′, and 302′ ) are sewn or thermally adhered together so as to form an air cushion ( 7 ) in the pad part ( 2 ).

1 . An anti-dust mask comprising:
 a pad part ( 2 );   a fixture ( 3 ) for a filter part;   a disposable filter part( 4 ) or ( 4 - 1 ); and   an exhaust valve ( 8 ), wherein,   in the pad part ( 2 ), a sheet is manufactured by adhering a polyurethane film ( 202 ) and a spandex fabric ( 203 ) to each other to process the polyurethane film ( 202 ) and a spandex fabric ( 203 ) into a circular shape with thermal press forming, and a pad internal wing part ( 201 ′) and a pad external wing part ( 201 ) are mounted on both end portions of an inside and an outside of the pad part,   curved surfaces with certain curvatures are formed in the part ( 206 ) of a bridge of a nose, the part ( 207 ) between a bridge of a nose and a cheekbone, the cheekbone part ( 208 ), the cheek part ( 209 ) and the chin part ( 210 ) of the pad part ( 2 ), and   an external wing part ( 302 ) of a fixture for a filter part and an internal wing part ( 302 ′) of a fixture for a filter part are formed in the fixture ( 3 ) for a filter part manufactured of one of polyurethane, silicon, polypropylene and polyethylene, and a rib ( 301 ) is formed in an upper portion of the fixture ( 3 )for a filter part.   
     
     
         2 . The anti-dust mask of  claim 1 , wherein,
 an air cushion ( 7 ) is formed in the pad part ( 2 ) by adhering the pad external/internal wing parts ( 201 ) and ( 201 ′) of the pad part ( 2 ) and the external/internal wing parts ( 302 ) and ( 302 ′) of a fixture for a filter part to each other with sewing or a heat sealing.   
     
     
         3 . The anti-dust mask of  claim 1 , wherein,
 a pad external wing part ( 201 ) of the pad part ( 2 ) and a filter wing part ( 401 ) of the disposal filter part ( 4 ) are adhered to each other by using sewing or a heat sealing.   
     
     
         4 . The anti-dust mask of  claim 1 , wherein,
 in a pad width ( 204 ) of the pad part ( 2 ), a pad width of the part ( 206 ) of a bridge of a nose and the part ( 207 ) between a bridge of a nose and a cheekbone is from 5 mm to 12 mm, and a pad width of the cheekbone part ( 208 ), the cheek part ( 209 ) and the chin part ( 210 ) is from 8 mm to 25 mm.   
     
     
         5 . The anti-dust mask of  claim 1 , wherein,
 in a pad height ( 205 ) of the pad part ( 2 ), a pad height of the part ( 206 ) of a bridge of a nose and the chin part ( 210 ) is from 2 mm to 10 mm, and a pad height of the part ( 207 ) between a bridge of a nose and a cheekbone, the cheekbone part ( 208 ) and the cheek part ( 209 ) is from 5 mm to 25 mm, and   a pad height of a pad internal wing part ( 201 ′) is higher by 2 mm to 10 mm than that of a pad external wing part ( 201 ).   
     
     
         6 . The anti-dust mask of  claim 1 , wherein,
 a radius curvature ( 206 - 1 ) of the part of a bridge of a nose of the pad part ( 2 ) is from 7 mm to 20 mm.   
     
     
         7 . The anti-dust mask of  claim 1 , wherein,
 a radius curvature ( 207 - 1 ) of the part between a bridge of a nose and a cheekbone of the pad part ( 2 ) is from 7 mm to 20 mm.   
     
     
         8 . The anti-dust mask of  claim 1 , wherein,
 a radius curvature ( 208 - 1 ) of the cheekbone part of the pad part ( 2 ) is from 50 mm to 80 mm.   
     
     
         9 . The anti-dust mask of  claim 1 , wherein,
 a radius curvature ( 209 - 1 ) of the cheek part of the pad part ( 2 ) is 25 mm to 40 mm.   
     
     
         10 . The anti-dust mask of  claim 1 , wherein,
 a radius curvature ( 210 - 1 ) of the chin part of the pad part ( 2 ) is from 30 mm to 60 mm.   
     
     
         11 . The anti-dust mask of  claim 1 , wherein,
 a thickness of the polyurethane film is from 0.3 mm to 1 mm.   
     
     
         12 . The anti-dust mask of  claim 1 , wherein,
 a plurality of holes ( 303 ) is formed in the fixture ( 3 ) for a filter part of the anti-dust mask ( 1 - 1 ), and   protrusions ( 101 ) are formed in a disposal filter part ( 4 - 1 ).   
     
     
         13 . The anti-dust mask of  claim 1 , wherein,
 an exhaust tube fixing rib ( 803 - 1 ) is disposed in a lower portion ( 803 ) of an exhaust valve.