Methods compositions and articles for olfactory-active substances

1. A scented article comprising,

an absorbent matrix material wound about a central axis to form a multilayered rod;

at least one olfactory-active composition releasably retained in the absorbent matrix material;

at least a portion of an exterior surface of the rod treated with a porosity-altering material;

wherein the treated exterior surface of the rod has a first porosity, and at least one interior layer of the rod has a second porosity, wherein the second porosity is different from the first porosity;

wherein the porosity-altering material comprises a dye, pigment, a wax, soy wax, paraffin, bees wax, polyethylene wax, microcrystalline wax, waxes that soften or melt at a temperature greater than about 150 F, acrylates, polylactide, polyglycolide or polycaprolactone, or a polyester copolymer selected from poly(lactide/glycolide) acid (PLGA) or poly(lactid-co-epsilon-caprolact-one) (PLCL), alkyl- or alkoxyalkyl-2-cyanoacrylates, n-butyl-2-cyanoacrylate, 2-methoxybutyl-2-cyanoacrylate, crosslinked cyanoacrylate, polylactic acid, polyglycolic acid, lactic-glycolic acid copolymers, polycaprolactone, lactic acid-caprolactone copolymers, poly-3-hydroxybutyric acid, polyorthoesters, polyalkyl acrylates, copolymers of alkylacrylate and vinyl acetate, polyalkyl methacrylates, copolymers of alkyl methacrylates and butadiene; dioctyl phthalate, dimethyl sebacate, trethyl phosphate, tri(2-ethylhexy)phosphate, tri(p-cresyl)phosphate, glyceryl triacetate, glyceryl tributyrate, diethyl sebacate, dioctyl adipate, isopropyl myristate, butyl stearate, lauric acid, dibutyl phthalate, trioctyl trimellitate, dioctyl glutarate, or a starch.

2. The scented article of claim 1 , wherein the multilayered rod comprises a hollow core.

3. The scented article of claim 2 , wherein an exposed surface of the hollow core is treated with a porosity-altering material such that a porosity of the treated exposed surface of the hollow core is different from the second porosity of the at least one interior layer.

4. The scented article of claim 1 , wherein the porosity-altering material is configured to at least partially inhibit release of the at least one olfactory-active composition from the absorbent matrix material.

5. The scented article of claim 1 , further comprising an engaging means for engaging the scented article with a surface, another article, or another structure.

6. The scented article of claim 5 , wherein the engaging means comprises a clip, a hook, a circle, a hook and eye means, a string, prongs, a loop, adhesives, a spike, a holder, a vase, a container, and a receptacle.

7. The scented article of claim 1 , wherein the multilayered rod is a spiral wound multilayered rod.

8. A scented article comprising:

an absorbent matrix material wound about a central axis to form a multilayered rod having a hollow core;

at least one olfactory-active composition releasably retained in the absorbent matrix material;

wherein at least a portion of exposed surfaces of the rod are treated with a porosity-altering material;

wherein a porosity of the treated exposed surfaces of the rod is different from a porosity of at least one non-exposed layer of the rod;

wherein the porosity-altering material comprises a dye, pigment, a wax, soy wax, paraffin, bees wax, polyethylene wax, microcrystalline wax, waxes that soften or melt at a temperature greater than about 150 F, acrylates, polylactide, polyglycolide or polycaprolactone, or a polyester copolymer selected from poly(lactide/glycolide) acid (PLGA) or poly(lactid-co-epsilon-caprolact-one) (PLCL), alkyl- or alkoxyalkyl-2-cyanoacrylates, n-butyl-2-cyanoacrylate, 2-methoxybutyl-2-cyanoacrylate, crosslinked cyanoacrylate, polylactic acid, polyglycolic acid, lactic-glycolic acid copolymers, polycaprolactone, lactic acid-caprolactone copolymers, poly-3-hydroxybutyric acid, polyorthoesters, polyalkyl acrylates, copolymers of alkylacrylate and vinyl acetate, polyalkyl methacrylates, copolymers of alkyl methacrylates and butadiene; dioctyl phthalate, dimethyl sebacate, trethyl phosphate, tri(2-ethylhexy)phosphate, tri(p-cresyl)phosphate, glyceryl triacetate, glyceryl tributyrate, diethyl sebacate, dioctyl adipate, isopropyl myristate, butyl stearate, lauric acid, dibutyl phthalate, trioctyl trimellitate, dioctyl glutarate, or a starch.

9. The scented article of claim 8 , wherein the porosity-altering material is configured to at least partially inhibit release of the at least one olfactory-active composition from the absorbent matrix material.

10. The scented article of claim 8 , wherein the multilayered rod is a spiral wound multilayered rod.

11. A scented article comprising

an absorbent matrix material wound about a central axis to form a multilayered rod;

at least one olfactory-active composition releasably retained in the absorbent matrix material;

a barrier material applied to at least a portion of an exterior surface of the rod;

wherein the barrier material retards a release of the at least one olfactory-active composition through the exterior surface of the rod; and

wherein the barrier material comprises a paper wrapping, dye, pigment, a wax, soy wax, paraffin, bees wax, polyethylene wax, microcrystalline wax, waxes that soften or melt at a temperature greater than about 150 F, acrylates, polylactide, polyglycolide or polycaprolactone, or a polyester copolymer selected from poly(lactide/glycolide) acid (PLGA) or poly(lactid-co-epsilon-caprolact-one) (PLCL), alkyl- or alkoxyalkyl-2-cyanoacrylates, n-butyl-2-cyanoacrylate, 2-methoxybutyl-2-cyanoacrylate, crosslinked cyanoacrylate, polylactic acid, polyglycolic acid, lactic-glycolic acid copolymers, polycaprolactone, lactic acid-caprolactone copolymers, poly-3-hydroxybutyric acid, polyorthoesters, polyalkyl acrylates, copolymers of alkylacrylate and vinyl acetate, polyalkyl methacrylates, copolymers of alkyl methacrylates and butadiene; dioctyl phthalate, dimethyl sebacate, trethyl phosphate, tri(2-ethylhexy)phosphate, tri(p-cresyl)phosphate, glyceryl triacetate, glyceryl tributyrate, diethyl sebacate, dioctyl adipate, isopropyl myristate, butyl stearate, lauric acid, dibutyl phthalate, trioctyl trimellitate, dioctyl glutarate, or a starch.

12. The scented article of claim 11 , wherein the multilayered rod comprises a hollow core.

13. The scented article of claim 11 , further comprising an engaging means for engaging the scented article with a surface, another article, or another structure.

14. The scented article of claim 13 , wherein the engaging means comprises a clip, a hook, a circle, a hook and eye means, a string, prongs, a loop, adhesives, a spike, a holder, a vase, a container, and a receptacle.

15. The scented article of claim 11 , wherein the multilayered rod is a spiral wound multilayered rod.

16. A scented article comprising

an absorbent matrix material wound around a central axis using a spiral winding process to form a multilayered rod having a hollow core;

at least one olfactory-active composition releasably retained in the absorbent matrix material;

wherein the rod comprises at least one innermost ply, at least one outermost ply, and at least one middle ply, wherein each ply is formed by a complete revolution of the absorbent matrix material around the central axis;

wherein the at least one innermost ply and/or the at least one outermost ply has a different rate of absorbency than the at least one middle ply.

17. The scented article of claim 16 , wherein at least some exposed surfaces of the rod are treated with a porosity-altering material.

18. The scented article of claim 17 , wherein the porosity-altering material is configured to at least partially inhibit release of the at least one olfactory-active composition from the absorbent matrix material.

19. The scented article of claim 16 , further comprising an engaging means for engaging the scented article with a surface, another article, or another structure.

20. The scented article of claim 19 , wherein the engaging means comprises a clip, a hook, a circle, a hook and eye means, a string, prongs, a loop, adhesives, a spike, a holder, a vase, a container, and a receptacle.