Patent ID: 7185653

Claim:
A disposable mask consisting of a filter body and a fastening means for dust protection, the mask comprising: a front filter ( 110 ) formed with a protruded central portion, an upper sealing wing ( 120 ) for unfolding to seal wearer's nose, said upper sealing wings ( 120 ) having upper first and second spread-guiding lines ( 121 , 122 ) for inwardly spreading the upper sealing wings, a lower scaling wing ( 130 ) for unfolding to seal wearer's jaw, said lower sealing wings ( 130 ) having lower first and second spread-guiding lines ( 131 , 132 ) for inwardly spreading the lower sealing wings, a pressing device ( 140 ) disposed at outer central portion of the upper sealing wing ( 120 ), a looped strap ( 200 ) for wearing around the wearers' head and neck, a pair of strap adjusting devices having a plate-shaped adjusting body for coupling to both sides of the filter body, a pair of upper and lower fastening means including an elastic piece for elastically grasping the looped strap, a pair of inserting recesses at each fastening means, a space between the elastic pieces and the fastening means for inserting the looped strap in a zigzag pattern through the upper and lower fastening means, a guide grip disposed between the upper and lower fastening means and obliquely formed outward for easily pulling both ends of the looped strap at the same time, and a pair of separation preventing clips formed at outer edge of each fastening means for preventing the looped strap off from the path, and a grasping and pulling portion of the looped strap provided at both sides of the guide grips for easily pulling the looped strap, simultaneously fastening and maintaining tension of the looped strap by an elastic holding means.