Disposable face mask
First Claim
1. A face mask for filtering airborne materials comprising:
- an upper portion adapted for placement generally over a user'"'"'s nasal area;
a lower portion adapted for placement generally over a user'"'"'s oral area;
ribs extending longitudinally of said mask along said upper portion;
a pair of ears at either end of the mask having openings therethrough;
a strap means for passing through the openings of said ears to secure the mask to a user'"'"'s face;
layers of plastic material forming the upper and lower portions that have been ultrasonically bonded together, andsaid ribs being formed by ultrasonically bonding said layers of plastic material through their cross-section to a thickness less than the combined layers of plastic material.
2 Assignments
0 Petitions
Accused Products
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.
69 Citations
21 Claims
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1. A face mask for filtering airborne materials comprising:
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an upper portion adapted for placement generally over a user'"'"'s nasal area; a lower portion adapted for placement generally over a user'"'"'s oral area; ribs extending longitudinally of said mask along said upper portion; a pair of ears at either end of the mask having openings therethrough; a strap means for passing through the openings of said ears to secure the mask to a user'"'"'s face; layers of plastic material forming the upper and lower portions that have been ultrasonically bonded together, and said ribs being formed by ultrasonically bonding said layers of plastic material through their cross-section to a thickness less than the combined layers of plastic material. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A mask for filtering airborne particles having a plurality of plastic layers comprising:
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an upper portion adapted for placement generally over a user'"'"'s nasal area; a lower portion adapted for placement generally over a user'"'"'s oral area; a plurality of ribs extending across a line extending generally from where a user'"'"'s nose would be ultrasonically formed by ultrasonic welding, and wherein said ribs are formed with respect to the adjacent cross-section of the plurality of plastic layers less than the thickness of the cross-section of the plurality of plastic layers. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A mask for filtering airborne particles comprising:
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an upper portion for passing over a user'"'"'s general nasal area; a lower portion for passing over a user'"'"'s general oral area; an ultrasonic weld bonding said upper and lower portions together; a pair of scoring lines distal from each other and proximate the ends of said mask that have been impressed into at least said upper portion or lower portion; ears folded at least partially along said scoring lines over and onto the mask body and secured thereto; and
,strap means for passing through said ears for securing the mask to a user'"'"'s head. - View Dependent Claims (15, 16)
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17. A process for making a mask comprising:
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providing a plurality of layers of plastic fabric materials in overlying relationship to each other; slitting and sealing said plurality of plastic materials to form two sandwiched portions thereof; feeding said two sandwiched portions of material in overlying relationship to each other; welding the two sandwiched portions together to form an upper and lower portion of the mask by means of an ultrasonic welding horn overlying a cylinder having cutting scoring lines and welding lines thereon; and
,providing a layer of plastic material between said welding horn and said sandwiched portions, which is not welded to said upper and lower portions. - View Dependent Claims (18, 19, 20, 21)
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Specification