Wax encapsulated flavour delivery system for tobacco

• US 10,383,360 B2
• Filed: 12/18/2014
• Issued: 08/20/2019
• Est. Priority Date: 12/20/2013
• Status: Active Grant

• Current Assignee: Philip Morris Products SA (Philip Morris Limited)
• Original Assignee: Philip Morris Products SA (Philip Morris Limited)
• Inventors: Hufnagel, Jan-Carlos, Christlbauer, Monika, Chetschik, Irene, Daiminger, Reiner, Petermann, Marcus, Kilzer, Andreas, Knez, Zeljko, Novak, Zoran, Perva Uzunalic, Amra, Tutnjevic, Neven, Jonak, Radoslav, Nose, Andrej, Fegu{hacek over (s)}, Urban, Henske, Simon
• Primary Examiner(s): Calandra, Anthony
• Application Number:
  US15/104,107
• Publication Number:
  US 20160324209A1
• Time in Patent Office: 1,706 Days
• CPC Class Codes: A24B 15/283 by encapsulation of the chemical substances
• CPC Class Codes: A24B 15/285 characterised by structural features, e.g. particle shape or size
• CPC Class Codes: A24D 3/0216 the additive being in the form of capsules, beads or the like

Abstract

A smoking composition includes tobacco material and a flavor delivery system. The flavor delivery system includes a flavor material and first wax material forming a core and a second wax material encapsulating the core. The second wax material being a different wax material than the first wax material.

Claims

1. A smoking composition comprising tobacco material and a flavour delivery system, the flavour delivery system comprising:

a flavour material and a first wax material forming a core; and

a second wax material surrounding and disposed directly on the core and forming an encapsulated flavour particle, the second wax material being a different wax material than the first wax material,

wherein the core makes up from 1% to 50% of a total weight of the encapsulated flavour particle.

2. The smoking composition according to claim 1, wherein the first wax material has a melting point of about 100 degrees centigrade or greater.

3. The smoking composition according to claim 1, wherein second wax material has a melting point that is less than the melting point of the first wax material.

4. The smoking composition according to claim 1, wherein the flavour material is a hydrophobic liquid.

5. The smoking composition according to claim 1, wherein the flavour material is entrained or dispersed in a matrix of the first wax material.

6. The smoking composition according to claim 1, wherein the encapsulated flavour particle has a particle size in a range from about 25 micrometers to about 250 micrometers.

7. The smoking composition according to claim 1, wherein the tobacco material comprises homogenized tobacco.

8. The smoking composition according to claim 1, wherein the tobacco material comprises cast leaf tobacco.

9. The smoking composition according to claim 1, wherein at least a portion of the second wax material is melted off the core and is dispersed within the tobacco material.

10. The smoking composition according to claim 2, wherein second wax material has a melting point that is less than the melting point of the first wax material.

11. The smoking composition according to claim 4, wherein the flavour material is entrained or dispersed in a matrix of the first wax material.

12. The smoking composition according to claim 7, wherein at least a portion of the second wax material is melted off the core and is dispersed within the tobacco material.

13. The smoking composition according to claim 8, wherein at least a portion of the second wax material is melted off the core and is dispersed within the tobacco material.

14. A smoking article comprising an aerosol generating substrate comprising the smoking composition of claim 1.

15. A method of forming the smoking composition according to claim 1 comprising the steps:

combining the tobacco material with the flavour delivery system to form a tobacco mixture; and

heating the tobacco mixture to form the smoking composition.

16. The method according to claim 15, wherein the tobacco material comprises homogenized tobacco and water and the heating step removes at least a portion of the water from the tobacco mixture to form the smoking composition.

17. The method according to claim 15, wherein the heating step melts at least a portion of the second wax material.

18. The method according to claim 17, wherein the heating step does not melt the first wax material.

19. The method according to claim 16, wherein the heating step melts at least a portion of the second wax material.

20. The method according to claim 19, wherein the heating step does not melt the first wax material.