Shaving aid for razor cartridges comprising a nano-filament
A shaving aid for razor cartridges comprising water soluble filaments having nano-sized diameters and exhibiting lubricating properties and with improved visual and tactile aesthetics.
1. A razor cartridge comprising:
a. a housing comprising a skin contacting surface;
b. at least one blade having a blade tip; and
c. a shaving aid positioned on said housing to expose a skin contacting portion of said shaving aid on said skin contacting surface, said shaving aid comprising at least one water soluble nano-filament having a diameter of from about 10 nm to about 1000 nm.
2. The razor cartridge of claim 1 , wherein said at least one water soluble nano-filament has an average diameter of from about 300 nm to about 600 nm.
3. The razor cartridge of claim 1 , wherein said shaving aid comprises at least 0.01% by weight of said at least one water soluble nano-filament.
4. The razor cartridge of claim 1 , wherein said at least one water soluble nano-filament forms a nonwoven web.
5. The razor cartridge of claim 4 , wherein said nonwoven web has a thickness of from about 0.01 mm to about 5 mm.
6. The razor cartridge of claim 1 , wherein said at least one water soluble nano-filament has a span of at least 30 um between intersections with other nano-filaments when the shaving aid comprises more than one nano-filament.
7. The razor cartridge of claim 1 , wherein at least a portion of said skin contacting portion has a surface coating, said surface coating comprising said at least one water soluble nano-filament.
8. The razor cartridge of claim 7 , wherein at least 50% of the skin contacting portion, by surface area, is covered by said surface coating.
9. The razor cartridge of claim 7 , wherein said surface coating comprises more than one layer.
10. The razor cartridge of claim 7 , wherein said surface coating has a thickness of from about 0.01 mm to about 20 mm.
11. The razor cartridge of claim 1 , further comprising a second nano-filament.
12. The razor cartridge of claim 11 , wherein said second nano-filament is not water soluble.
13. The razor cartridge of claim 1 , wherein said at least one water soluble nano-filament comprises filament forming material selected from the group consisting of polyvinyl alcohol, quaternary ammonium polymer, polyethylene glycol, polyethylene oxide, polypropylene oxide, and a combination thereof.
14. The razor cartridge of claim 13 , wherein said at least one water soluble nano-filament comprises a copolymer of polyethylene oxide and polypropylene oxide.
15. The razor cartridge of claim 1 , wherein said shaving aid comprises a plurality of nano-filaments, and wherein said plurality of nano-filaments are cross linked.