Disposable air freshener including gel or polymer fragrance support
Embodiments of the invention provide a fragrance distribution device comprising an electrical resistor, a plug or other power source, and a fragrance in a polymer or thermoplastic carrier. The polymer or thermoplastic carrier may include, for example, metal inclusions, which may be powdered metal. These metal inclusions are believed to enhance heat distribution throughout the carrier, thus allowing a more uniform and reliable release of fragrance.
1. A fragrance distribution device, comprising:
a housing;
a resistor connected to said housing and capable of generating heat to be transferred to said housing;
a fragrance support contained within said housing, said fragrance support comprising a thermoplastic carrier, at least one fragrance, and a plurality of metal inclusions distributed throughout the thermoplastic carrier wherein said metal inclusions are powders that have a size ranging between 200 mesh to 400 mesh.
2. The fragrance distribution device of claim 1 , wherein said thermoplastic carrier is selected from the group consisting of ethylene vinyl acetate (EVA), ethyl vinyl alcohol, high density polyethylene, low density polyethylene, polystyrene, acrylic polymers, polycarbonates, polyurethanes, nylons, and mixtures and copolymers of the foregoing.
3. The fragrance distribution device of claim 2 , wherein said thermoplastic carrier is EVA.
4. The fragrance distribution device of claim 1 , wherein said metal inclusions are selected from the group consisting of aluminum, nickel, gold, silver, copper, platinum, and mixtures thereof.
5. The fragrance distribution device of claim 4 , wherein said metal inclusions are aluminum.
6. The fragrance distribution device of claim 1 , wherein said metal inclusions are present in an amount between 0.1 to 2.0% of the fragrance support by weight.
7. The fragrance distribution device of claim 6 , wherein said metal inclusions are present in the amount of 0.1 to 0.5% by weight of the fragrance support.
8. The fragrance distribution device of claim 1 , wherein said metal inclusions are powders that have a size of about 325 mesh.
9. The fragrance distribution device of claim 1 , wherein said fragrance is selected from the group consisting of benzyl alcohol, ethyl maltol, furaneol, 1-hexanol, cis-3-hexen-1-ol, menthol, benzaldehyde, hexanal, cinnamaldehyde, citral, cis-3-hexenal, furfural, neral, vanillin, ethyl acetate, ethyl butanoate, ethyl decanoate, spice oil, flower oil, fruit oil, ethyl hexanoate, ethyl octanoate, hexyl acetate, isoamyl acetate, methyl butanoate, methyl salicylate, pentyl butanoate, pentyl pentanoate, sotolon, strawberry aldehyde, fructone, anethole, anisole, eugenol, dihydrojasmone, 2-acetyl-1-pyrroline, 6-acetyl-2,3,4,5-tetrahydropyridine, gamma-decalactone, gamma-nonalactone, delta-octalactone, jasmine lactone, massoia lactone, camphor, citronellol, linalool, nerol, nerolidol,alpha-terpineol, thujone, and thymol.
10. The fragrance distribution device of claim 1 , wherein said metal inclusions are aluminum powder and said thermoplastic carrier is EVA.
11. The fragrance distribution device of claim 1 , wherein said fragrance support comprises a recess, and wherein a part of said resistor is shaped to fit snugly within said recess, said recess providing an increased surface area for contact and ventilation of the fragrance support and resistor relative to a flat fragrance support abutting a flat resistor.
12. The fragrance distribution device of claim 11 , wherein said recess is a half-cylinder.