Deodorizer sheet material and insole

Abstract

.Iadd.A deodorizing latex sheet material, insoles for use in reducing foot odor, and methods of making these products. .Iaddend.Shoe inserts are produced comprising a sole-shaped sheet or the like of foamed latex impregnated with activated charcoal. When such a shaped sheet is used as a shoe insert or insole it is found to substantially reduce or even eliminate foot odors frequently associated with perspiring feet.

I claim: 
     
       1. A shoe insert for absorbing odors resulting from perspiring feet comprising a cured sheet of .[.opencelled.]. .Iadd.open-celled .Iaddend.foam, at least one side of the sheet having a relatively smooth skin formed during curing which is impervious to passage of charcoal particles, said foam containing homogeneously distributed through the solid part thereof finely divided activated charcoal particles in an amount effective to absorb odors when said sheet is subjected to contact with foot perspiration and to passage of odor-filled air through interstitial spaces within said foam, said charcoal particles having been incorporated prior to frothing and curing of said foam. 
     
     
       2. The article of claim 1 wherein the charcoal is present in the amount of about 10.2 to 35 percent. 
     
     
       3. The article of claim 1 wherein the other side has a backing layer of a material which is pervious to passage of air, at least the outer surface of said layer being free of finely divided activated charcoal. 
     
     
       4. The product of claim 1 wherein said foam is formed of latex. 
     
     
       5. The product of claim .[.2.]. .Iadd.3 .Iaddend.wherein said material is a textile. 
     
     
       6. The product of claim 1 wherein said foam is selected from the group consisting of latex foams, polyurethane foams, and vinyl chloride plastisol foams. .Iadd. 7. An effective deodorizer sheet material, said sheet material having interstitial spaces therein allowing for the passage of air therethrough, said sheet material comprising: a. an open-celled latex foam through the open cells of which air can pass; and   b. finely ground activated charcoal for deodorizing, said charcoal being homogeneously dispersed throughout the latex material comprising said foam. .Iaddend. .Iadd. 8. A deodorizer sheet material according to claim 7, wherein said finely ground activated charcoal is present in an amount up to about 35 percent. .Iaddend..Iadd. 9. A deodorizer sheet material according to claim 7, wherein said sheet material comprises a backing material. .Iaddend..Iadd. 10. A deodorizer sheet material according to claim 9, wherein said backing material is impregnated with said sheet material. .Iaddend..Iadd. 11. An effective deodorizer sheet material, said sheet material having interstitial spaces therein allowing for the passage of air therethrough, said sheet material comprising:   a. an open-celled latex foam through the open cells of which air can pass; and   b. at least about 10.2 percent finely ground activated charcoal for deodorizing, said charcoal being homogeneously dispersed throughout the latex material comprising said foam. .Iaddend. .Iadd. 12. A deodorizer sheet material according to claim 11, wherein said sheet material comprises a backing material. .Iaddend..Iadd. 13. A deodorizer sheet material according to claim 12, wherein said backing material is impregnated with said sheet material. .Iaddend..Iadd. 14. An effective deodorizer sheet material, said sheet material having interstitial spaces therein allowing for the passage of air therethrough, said sheet material comprising:   a. an open-celled latex foam through the open cells of which air can pass; and   b. from at least about 10.2 percent to about 35 percent finely ground activated charcoal for deodorizing, said charcoal being homogeneously dispersed throughout the latex material comprising said foam. .Iaddend. .Iadd. 15. A deodorizer sheet material according to claim 14, wherein said backing material is impregnated with said sheet material. .Iaddend..Iadd. 16. An effective deodorizer sheet material, said sheet material having interstitial spaces therein allowing for the passage of air therethrough, said sheet material comprising:   a. an open-celled latex foam through the open cells of which air can pass;   b. from at least about 10.2 percent to about 35 percent finely ground activated charcoal for deodorizing, said charcoal being homogeneously dispersed throughout the latex material comprising said foam; and   c. a backing material. .Iaddend. .Iadd. 17. An effective foot-deodorizing insole, said insole being shaped to conform to the basic outline of a foot, adapted for insertion into a shoe and having interstitial spaces therein allowing for the passage of air therethrough, said insole comprising:   a. an open-celled foam through the open cells of which air can pass; and   b. finely ground activated charcoal for deodorizing, said charcoal being homogeneously dispersed throughout the material comprising said foam. .Iaddend. .Iadd. 18. An insole according to claim 17, wherein said foam comprises latex. .Iaddend..Iadd. 19. An insole according to claim 17, wherein said foam comprises polyurethane. .Iaddend..Iadd. 20. An insole according to claim 17, wherein said foam comprises vinyl chloride. .Iaddend..Iadd. 21. An insole according to claim 17, wherein said finely ground activated charcoal is present in an amount up to about 35 percent. .Iaddend..Iadd. 22. An insole according to claim 17, wherein said insole comprises a backing material. .Iaddend..Iadd. 23. An insole according to claim 22, wherein said backing material is impregnated with said foam. .Iaddend. .Iadd. 24. An effective foot-deodorizing insole, said insole being shaped to conform to the basic outline of a foot, adapted for insertion into a shoe and having interstitial spaces therein allowing for the passage of air therethrough, said insole comprising:   a. an open-celled foam through the open cells of which air can pass; and   b. at least about 10.2 percent finely ground activated charcoal for deodorizing, said charcoal being homogeneously dispersed throughout the material comprising said foam. .Iaddend..Iadd. 25. An insole according to claim 24, wherein said foam comprises latex. .Iaddend..Iadd. 26. An insole according to claim 24, wherein said foam comprises polyurethane. .Iaddend..Iadd. 27. An insole according to claim 24, wherein said foam comprises vinyl chloride. .Iaddend. .Iadd. 28. An insole according to claim 24, wherein said insole comprises a backing material. .Iaddend..Iadd. 29. An insole according to claim 28, wherein said backing material is impregnated with said foam. .Iaddend..Iadd. 30. An effective foot-deodorizing insole, said insole being shaped to conform to the basic outline of a foot, adapted for insertion into a shoe and having interstitial spaces therein allowing for the passage of air therethrough, said insole comprising:   a. an open-celled foam through the open cells of which air can pass; and   b. from at least about 10.2 percent to about 35 percent finely ground activated charcoal for deodorizing, said charcoal being homogeneously dispersed throughout the material comprising said foam. .Iaddend. .Iadd. 31. An insole according to claim 30, wherein said foam comprises latex. .Iaddend..Iadd. 32. An insole according to claim 30, wherein said foam comprises polyurethane. .Iaddend..Iadd. 33. An insole according to claim 30, wherein said foam comprises vinyl chloride. .Iaddend. .Iadd. 34. An effective foot-deodorizing insole, said insole being shaped to conform to the basic outline of a foot, adapted for insertion into a shoe and having interstitial spaces therein allowing for the passage of air therethrough, said insole comprising:   a. an open-celled foam through the open cells of which air can pass;   b. from at least about 10.2 percent to about 35 percent finely ground activated charcoal for deodorizing, said charcoal being homogeneously dispersed throughout the material comprising said foam; and   c. a backing material. .Iaddend..Iadd. 35. An insole according to claim 34, wherein said backing material is impregnated with said foam. .Iaddend..Iadd. 36. An effective foot-deodorizing insole, said insole being shaped to conform to the basic outline of a foot, adapted for insertion into a shoe and having interstitial spaces therein allowing for the passage of air therethrough, said insole comprising:   a. an open-celled foam, comprising at least one member of the group consisting of latex and polyurethane foams, through the open cells of which air can pass;   b. at least about 10.2 percent finely ground activated charcoal for deodorizing, said charcoal being homogeneously dispersed throughout the material comprising said foam; and   c. a backing material. .Iaddend. .Iadd. 37. An effective foot-deodorizing insole, said insole being shaped to conform to the basic outline of a foot, adapted for insertion into a shoe and having interstitial spaces therein allowing for the passage of air therethrough, said insole comprising:   a. an open-celled latex foam through the open cells of which air can pass;   b. at least about 10.2 percent finely ground activated charcoal for deodorizing, said charcoal being homogeneously dispersed throughout the material comprising said foam; and   c. a backing material. .Iaddend. .Iadd. 38. A sheet for absorbing odors resulting from a perspiring portion of a human body comprising a cured sheet of open-celled foam, said foam containing homogeneously distributed through the solid part thereof finely divided activated charcoal particles in an amount effective to absorb odors when said sheet is subjected to contact with body perspiration and to passage of odor-filled air through interstitial spaces within said foam, said charcoal particles having been incorporated prior to frothing and curing of said foam. .Iaddend..Iadd. 39. The article of claim 38 wherein the charcoal is present in the amount of about 10.2 to 35 percent. .Iaddend..Iadd. 40. The article of claim 38 wherein the other side has a backing layer of a material which is pervious to passage of air, at least the outer surface of said layer being free of finely divided activated charcoal. .Iaddend..Iadd. 41. The product of claim 38 wherein said foam is formed of latex. .Iaddend. .Iadd. 42. The product of claim 40 wherein said material is a textile. .Iaddend..Iadd. 43. The product of claim 38 wherein said foam is selected from the group consisting of latex foams, polyurethane foams, and vinyl chloride plastisol foams. .Iaddend.