Cooling cigarette filter and cigarette

Patent metadata

Field	Value
Publication number	US-12150474-B2
Application number	US-201817270833-A
Country	US
Kind code	B2
Filing date	Oct 24, 2018
Priority date	Aug 24, 2018
Publication date	Nov 26, 2024
Grant date	Nov 26, 2024

Abstract

A cooling cigarette filter and a cigarette are disclosed. The cooling cigarette filter comprises a cooling section ( 2 ). The cooling section ( 2 ) comprises a cooling stick ( 201 ) formed from paper ( 5 ). The cooling stick ( 201 ) has one or more holes ( 202 ) communicating two ends of the cooling stick. And the surface of the paper ( 5 ) is coated with a cooling material. The cooling cigarette filter has the advantages of ensuring the amount of smoke and lowering the temperature of the smoke entering the mouth. Through the combination design of the structure of the cooling stick and the type and amount of the cooling material, the smoke can flow out of a smoke generation section rapidly and smoothly And the temperature of the high-temperature smoke before entering the mouth can be significantly lowered, thereby improving the comfort and satisfaction of smoking.

First claim

The invention claimed is:

1. A cooling cigarette filter for reducing a temperature of smoke from a cigarette before entering a mouth, the cooling cigarette filter comprising a cooling section ( 2 ), wherein:
the cooling section ( 2 ) comprises a cooling stick ( 201 ) formed from paper ( 5 ),
the cooling stick ( 201 ) has one or more holes ( 202 ) communicating two ends of the cooling stick, and cools smoke from the cigarette entering one end of the cooling stick such that smoke exiting the cooling stick at another end has a maximum temperature of 46-61° C. when entering the mouth, and
the one or more holes ( 202 ) are formed by paper repeatedly bended or folded in a cylindrical space;
a surface of the paper ( 5 ) is coated with a cooling material, and
a coating amount of the cooling material is at least 15% of a total weight of the paper; and
the cooling material comprises at least two of low molecular weight polyethylene glycol (PEG), medium molecular weight PEG and high molecular weight PEG.

2. The cooling cigarette filter according to claim 1 , wherein one or both surfaces of the paper ( 5 ) have multiple concave-convex lines.

3. The cooling cigarette filter according to claim 2 , wherein a depth of the multiple concave-convex lines is 0.1 to 3 mm, and an interval between adjacent lines is 0.5 to 15 mm.

4. The cooling cigarette filter according to claim 1 , wherein a cross section of the one or more holes ( 202 ) is irregular.

5. The cooling cigarette filter according to claim 1 , wherein the paper ( 5 ) is one of cellulose paper, coated paper and wrap paper.

6. The cooling cigarette filter according to claim 1 , wherein a total specific surface area of the one or more holes is 10% to 50% of a surface area of the paper ( 5 ).

7. The cooling cigarette filter according to claim 1 , wherein a coating area of the cooling material on the surface of the paper ( 5 ) is 50% to 100% of a surface area of the paper.

8. The cooling cigarette filter according to claim 1 , wherein one or both sides of the paper ( 5 ) are coated with the cooling material.

9. The cooling cigarette filter according to claim 1 , wherein:
the surface of the paper ( 5 ) has a coating region coated with the cooling material and a blank region not coated with the cooling material, and
the blank region and the coating region are distributed along a length of the cooling stick ( 201 ).

10. The cooling cigarette filter according to claim 1 , wherein the paper ( 5 ) is rectangular when unfolded.

11. The cooling cigarette filter according to claim 1 , wherein:
the cooling material is coated in at least two coating regions on a surface of the paper, and
the at least two coating regions are distributed along a length of the cooling stick.

12. The cooling cigarette filter according to claim 1 , wherein the cooling material further comprises one or more of polydextrose and lactitol.

13. The cooling cigarette filter according to claim 1 , wherein in parts by mass, the cooling material comprises 0-10 parts of low molecular weight PEG, 0-10 parts of medium molecular weight PEG, and 0-10 parts of high molecular weight PEG, wherein a content of at most one of the low molecular weight PEG, the medium molecular weight PEG, and the high molecular weight PEG is 0.

14. The cooling cigarette filter according to claim 1 , wherein the cooling stick is wrapped with wrap paper ( 4 ).

15. The cooling cigarette filter according to claim 1 , wherein:
a filter section ( 1 ) is connected to one end of the cooling section ( 2 ), or
two filter sections ( 1 ) are respectively connected to two ends of the cooling section ( 2 ).

16. The cooling cigarette filter according to claim 15 , wherein the filter section has a length of 5 to 9 mm, and the cooling section has a length of 10 to 50 mm.

17. A cigarette, comprising a smoke generation section ( 3 ) and a cooling cigarette filter for reducing a temperature of smoke from a cigarette before entering a mouth, wherein the cooling cigarette filter comprises a cooling section ( 2 ), wherein:
the cooling section ( 2 ) comprises a cooling stick ( 201 ) formed from paper ( 5 ),
the cooling stick ( 201 ) has one or more holes ( 202 ) communicating two ends of the cooling stick, and cools smoke from the cigarette entering one end of the cooling stick such that smoke exiting the cooling stick at another end has a maximum temperature of 46-61° C. when entering the mouth, and
the one or more holes ( 202 ) are formed by paper repeatedly bended or folded in a cylindrical space;
a surface of the paper ( 5 ) is coated with a cooling material, and
a coating amount of the cooling material is at least 15% of a total weight of the paper; and
the cooling material comprises at least two of low molecular weight polyethylene glycol (PEG), medium molecular weight PEG and high molecular weight PEG.

18. The cigarette according to claim 17 , wherein the smoke generation section has a length of 10 to 70 mm.

19. The cooling cigarette filter according to claim 1 , wherein a basis weight of the paper is 40 to 100 g/m2.

20. The cooling cigarette filter according to claim 11 , wherein a first of the at least two coating regions is coated with a first mixture of the cooling material, and a second of the at least two coating regions is coated with a second mixture of the cooling material that is different from the first mixture.

Assignees

• China Tobacco Hunan Ind Co Ltd

Inventors

• Luo Wei
• Zhong Kejun
• Du Wen
• Xie Lanying
• Qin Liangsheng
• Wen Jianhui
• Ding Duo
• Xie Guoyong
• Ren Jianxin
• Sun Zhiwei

Classifications

• A24D3/14

  of organic materials as additive (of ion exchange materials A24D3/12) · CPC title

• A24D3/067

  characterised by functional properties · CPC title

• A24D3/066

  in the form of foam or having cellular structure · CPC title

• A24D3/0275

  for filters with special features · CPC title

• A24D1/20 Primary

  Cigarettes specially adapted for simulated smoking devices · CPC title