Granted Patent B2

US 7,485,589 · App. 11/194,939 · Granted Feb 3, 2009

Abstract

Claims (22)

1. A sanitizing article, comprising:

a nonwoven substrate, including

a cationic fibrous component comprising poly-[1-4]-β-D-glucosamine fiber disposed within the nonwoven substrate, wherein said sanitizing article comprises about 3%-100% by weight poly-[1-4]-β-D-glucosamine fiber,

wherein the sanitizing article stores in a sanitizing solution containing quaternary amine such that at least 90% of said quaternary amine in ppm is maintained in said sanitizing solution compared to an initial solution thereof after one hour storage in said sanitizing solution.

2. A sanitizing article as in claim 1 , wherein the sanitizing article comprises about 5%-60% by weight poly-[1-4]-β-D-glucosamine fiber.

3. A sanitizing article as in claim 1 , wherein the sanitizing article comprises two or more layers.

4. A sanitizing article as in claim 3 , wherein the layers are selected from the group consisting of carded layers, airlaid layers, wetlaid layers, spunlace layers, filamentary layers, coforms, films, and combinations thereof.

5. A sanitizing article as in claim 4 , wherein the filamentary layers are selected from the group consisting of spunbond layers, meltblown, layers, and combinations thereof.

6. A sanitizing article as in claim 4 , wherein the filamentary layers are nano-denier filamentary layers.

7. A sanitizing article as in claim 1 , wherein the nonwoven substrate is selected from the group consisting of natural fibers, synthetic fibers, and the combinations thereof.

8. A sanitizing article as in claim 1 , wherein said nonwoven substrate is a hydroentangled nonwoven fibrous blend comprising polyester fibers, rayon fibers, and 5 to 15% poly-[1-4]-β-D-glucosamine staple fibers, wherein said sanitizing article is essentially free of binder.

9. A sanitizing article as in claim 1 , wherein the sanitizing article stores in a sanitizing solution containing quaternary amine such that at least 95% of said quaternary amine in ppm is maintained in said sanitizing solution compared to an initial solution thereof after one hour storage in said sanitizing solution.

10. A method for making a sanitizing article, the method comprising the steps of: forming a fibrous batt, wherein a cationic fibrous component comprising poly-[1-4]-β-D-glucosamine fiber is disposed within the fibrous batt; and consolidating the fibrous batt into a nonwoven substrate to provide a sanitizing article comprising about 3%-100% by weight poly-[1-4]-β-D-glucosamine fiber, wherein the sanitizing article stores in a sanitizing solution containing quaternary amine such that at least 90% of said quaternary amine in ppm is maintained in said sanitizing solution compared to an initial solution thereof after one hour storage in said sanitizing solution.

11. A method for making a sanitizing article as in claim 10 , further comprising storing said nonwoven substrate in quaternary amine solution.

12. An article for sanitizing a surface utilizing a sanitizing solution comprising: a nonwoven substrate, including a cationic fibrous component comprising poly-[1-4]-β-D-glucosamine fiber disposed within the nonwoven substrate, wherein said article comprises about 3%-100% by weight poly-[1-4]-β-D-glucosamine fiber, and wherein the article has at least one face for applying sanitizing solution to an external surface, wherein the article stores in a sanitizing solution containing quaternary amine such that at least 90% of said quaternary amine in ppm is maintained in said sanitizing solution compared to an initial solution thereof after one hour storage in said sanitizing solution.

13. An article for sanitizing a surface utilizing a sanitizing solution as in claim 12 , further comprising a quaternary amine solution in which the nonwoven substrate is stored.

14. An article for sanitizing a surface utilizing a sanitizing solution as in claim 13 , wherein the article stores in a sanitizing solution containing quaternary amine such that at least 95% of said quaternary amine in ppm is maintained in said sanitizing solution compared to an initial solution thereof after one hour storage in said sanitizing solution.

15. An article for sanitizing a surface utilizing a sanitizing solution as in claim 12 , wherein the article further comprises a first face for applying the sanitizing solution to an external surface and a dissimilar opposing second face for providing a function dissimilar to the first face.

16. An article for sanitizing a surface utilizing a sanitizing solution as in claim 15 , wherein the second face enhances the removal of particulate matter from an external surface.

17. A sanitizing article as in claim 1 , wherein the sanitizing article contains cationic charge imparted by fibrous components of said article and is essentially free of binder.

18. A method for making a sanitizing article as in claim 10 , wherein the sanitizing article contains cationic charge imparted by fibrous components of said article and is essentially free of binder.

19. An article for sanitizing a surface utilizing a sanitizing solution as in claim 12 , wherein the article contains cationic charge imparted by fibrous components of said article and is essentially free of binder.

Assignments (46)