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1. WO2020002689 - CARTRIDGE FOR AN AEROSOL-GENERATING SYSTEM CONTAINING A NICOTINE SOURCE COMPRISING A LIQUID NICOTINE FORMULATION

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CLAIMS

1. A cartridge for use in an aerosol-generating system, the cartridge containing a nicotine source comprising a liquid nicotine formulation, the liquid nicotine formulation comprising glycerine in an amount of at least 10 percent by weight and nicotine, wherein the ratio by weight of nicotine to glycerine in the liquid nicotine formulation is between about 3:2 and about 9:1.

2. A cartridge according to claim 1 wherein the ratio by weight of nicotine to glycerine in the liquid nicotine formulation is at least about 9:5.

3. A cartridge according to claim 1 or 2 wherein the ratio by weight of nicotine to glycerine in the liquid nicotine formulation is less than or equal to about 8:1 .

4. A cartridge according to any one of claims 1 to 3 wherein the ratio by weight of nicotine to glycerine in the liquid nicotine formulation is between about 2:1 and about 4:1.

5. A cartridge according to any one of claims 1 to 4 wherein the nicotine content of the liquid nicotine formulation is between about 60 percent by weight and about 90 percent by weight.

6. A cartridge according to any one of claims 1 to 5 wherein the glycerine content of the liquid nicotine formulation is between about 10 percent by weight and about 30 percent by weight.

7. A cartridge according to any one of claims 1 to 6 wherein the nicotine content of the liquid nicotine formulation is at least about 70 percent by weight.

8. A cartridge according to any one of claims 1 to 7 wherein the combined glycerine content and nicotine content of the liquid nicotine formulation is at least about 95 percent by weight.

9. A cartridge according to any one of claims 1 to 8 wherein the liquid nicotine formulation comprises one or more flavourants.

10. A cartridge according to any one of claims 1 to 9 wherein the nicotine source comprises a first carrier material impregnated with the liquid nicotine formulation.

1 1 . A cartridge according to claim 10 wherein the first carrier material is impregnated with between about 10 microlitres and about 25 microlitres of the liquid nicotine formulation.

12. A cartridge according to any one of claims 1 to 1 1 further comprising an acid source.

13. A cartridge according to claim 12 wherein the acid source comprises a second carrier material impregnated with acid.

14. A cartridge according to claim 13 wherein the second carrier material is impregnated with between about 10 microlitres and about 25 microlitres of acid.

15. An aerosol-generating system comprising:

a cartridge according to any one of claims 1 to 14; and

an aerosol-generating device comprising:

a housing defining a device cavity configured to receive at least a portion of the cartridge; and

a heating element for heating the cartridge.