Disposable face mask

Details Disposable face mask Disposable face mask

1996-05-20

1997-12-30

Miller, V.

Surgery

Respiratory method or device

Face mask covering a breathing passage

12820619, 12820621, 128207, 128 11, A62B 710, A62B 1808, A62B 1802, A62B 2302

Patent

active

057018936

ABSTRACT:
A face mask for filtering airborne particles formed by an upper portion adapted for placement over a user's nasal area and a lower portion adapted for placement over a user's oral area. Ribs are formed ultrasonically extending along the length of the upper portion, and a pair of ears are formed at either end having openings therethrough to receive a plastic strap for passing through the openings of the ears to secure the mask to a user's face. The mask is formed by layers of plastic material including scrim and filtration material forming the upper and lower portions that have been ultrasonically bonded together. A process for making the mask includes providing plastic fabric layered materials that are ultrasonically welded with a plurality of ribs and slitting and sealing them to form two portions. The two portions are fed in overlying sandwiched relationship to each other and scored for the ears while at the same time welding them together to form an upper and lower portion of the mask.

REFERENCES:
patent: 4419993 (1983-12-01), Petersen
patent: 4419994 (1983-12-01), Hilton
patent: 4606341 (1986-08-01), Hubbard et al.
patent: 4883547 (1989-11-01), Japuntich
patent: 5553608 (1996-09-01), Reese et al.

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