Aerosol Generating Article With A Tipping Wrapper

Abstract

A cigarette has a tipping wrapper connecting a mouthpiece rod and a tobacco rod, wherein the mouthpiece rod and the tobacco rod each have a cylindrical shape with a respective longitudinal axis arranged as a surface normal of the base area of the respective cylindrical shape, wherein the tipping wrapper is circumferentially wrapped around the mouthpiece rod and the tobacco rod at least in part along their consecutively arranged longitudinal axes, has an inner surface directed towards the mouthpiece rod and tobacco rod and an oppositely arranged outer surface and includes at least wood pulp. The tipping wrapper further includes at least 20% of clay and/or Al(OH).sub.3, has a porosity equal to or less than 5.0 C.U. and a surface smoothness of more than 100 sec (Bekk) on the outer surface.

Claims

1. An aerosol generating article with a tipping wrapper connecting a mouthpiece and an aerosol generating material rod, wherein the mouthpiece and the aerosol generating material rod each have a cylindrical shape with a respective longitudinal axis arranged as a surface normal of a base area of the respective cylindrical shape, wherein the wrapper is circumferentially wrapped around the mouthpiece and the aerosol generating material rod at least in part along their consecutively arranged longitudinal axes, has an inner surface directed towards the mouthpiece and the aerosol generating material rod and an oppositely arranged outer surface and comprises at least wood pulp, wherein the tipping wrapper further comprises at least 20% of clay and/or Al.sub.3, has a porosity equal to or less than 5.0 C.U. and a surface smoothness of more than 100 sec on the outer surface.

2. The aerosol generating article according to claim 1, wherein: the wrapper further comprises at least 4% CaCO.sub.3.

3. The aerosol generating article according to claim 1, wherein: the porosity of the wrapper is equal to or less than 3.0 C.U.

4. The aerosol generating article according to preceding claim 1, wherein: the wrapper has an opacity of more than 78%.

5. The aerosol generating article according to claim 1, wherein: the wrapper has a brightness of more than 80%.

6. The aerosol generating article according to claim 1, wherein: the wrapper has a basis weight equal to or larger than 36 gsm and equal to or smaller than 47 gsm.

7. The aerosol generating article according to claim 1, wherein: the wrapper has a thickness equal to or larger than 35 μm and equal to or smaller than 50 μm.

8. The aerosol generating article according to claim 1, wherein: the wrapper comprises perforations.

9. The aerosol generating article according to claim 1, wherein: the wrapper comprises a printing on at least a part of the outer surface.

10. A tipping wrapper for connecting a mouthpiece and an aerosol generating material rod of an aerosol generating article, wherein the wrapper has an inner surface applicable in use towards the mouthpiece and the aerosol generating material rod and an oppositely arranged outer surface and comprises at least wood pulp and a calcined clay filler, wherein the wrapper further comprises at least 20% of clay and/or Al(OH).sub.3, has a porosity equal to or less than 5.0 C.U. and a surface smoothness of greater than or equal to 100 sec (Bekk) on the outer surface.

11. The wrapper according to claim 9, wherein: the smoothness of the outer surface is 100-250 sec (Bekk).

12. The wrapper according to claim 9, further comprising: ns 4-20% CaCO.sub.3.

13. The wrapper according to claim 9, wherein: the wrapper comprises 10-30% clay.

14. The wrapper according to claim 9, wherein: the wrapper comprises 0-15% Al(OH).sub.3.

15. The wrapper according to claim 9, wherein: the wrapper comprises 0% Al(OH).sub.3, has a porosity of less than 2 C.U., and a CaCO.sub.3 content of less than 5%.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Further advantages, objectives and features of the present invention will be described, by way of example only, in the following description with reference to the appended figures. In the figures, like components in different embodiments can exhibit the same reference symbols.

[0029] The Figures Show:

[0030] FIG. 1 a general view of an aerosol generating article 1 with a tipping wrapper 6;

[0031] FIG. 2 a detailed view of the tipping wrapper 6 comprising perforations 12;

[0032] FIG. 3 a detailed view of the tipping wrapper 6 comprising a printing 14.

DETAILED DESCRIPTION

[0033] FIG. 1 shows a general view of an aerosol generating article in the form of a cigarette 1 with a tipping wrapper 6, also referred to in the following as tipping paper 6. The tipping paper 6 is wrapped circumferentially around the mouthpiece rod 2 and around the tobacco rod 4. The mouthpiece rod 2 has a cylindrical shape. The cylindrical shape of the mouthpiece rod 2 comprises a longitudinal axis L1, which is arranged perpendicular to the base faces 2a of the cylindrical shape. Preferably, the mouthpiece rod 2 consists of a monoacetate filter. The tobacco rod 4 also has a cylindrical shape with a longitudinal axis L2. This longitudinal axis L2 is arranged perpendicular to the base faces 4a of the cylindrical shape of the tobacco rod 4. Preferably, the cylindrical shape of the tobacco rod 4 is longer with respect to the longitudinal axes L1, L2 compared to the cylindrical shape of the mouthpiece rod 2. Preferably, the mouthpiece rod 2 and the tobacco rod 4 have the same diameter. Preferably, the tobacco rod 4 comprises a cut tobacco material and a cigarette paper, which encloses the tobacco material at least in the circumferential direction of the cylindrical shape.

[0034] The longitudinal axes L1, L2 coincide, forming a joint longitudinal axis L. The mouthpiece rod 2 and the tobacco rod 4 are arranged consecutively along the joint longitudinal axis L. This means that one of the base faces 2a of the mouthpiece rod 2 is arranged directly adjacent to one of the base faces 4a of the tobacco rod 4. The tipping paper 6 is wrapped circumferentially around the mouthpiece rod 2 and the tobacco rod 4. Preferably, the tipping paper 6 covers the whole lateral area 2b of the mouthpiece rod 2. Preferably, the tipping paper 6 covers only a circular segment 4c of the lateral area 4b of the tobacco rod 4. The circular segment 4c is preferably arranged directly at the base area 4a directly at the mouthpiece rod 2. In this way, the tipping paper 6 is affixed to both mouthpiece rod 2 and tobacco rod 4 and therefore connects the two. With its inner surface 8 the tipping paper 6 is arranged in direct contact with the mouthpiece rod 2 and the tobacco rod 4. For better visibility, the tipping paper 6 is depicted slightly distanced to the mouthpiece and tobacco rod 2, 4.

[0035] FIG. 2 shows a detailed view of the tipping paper 6. The tipping paper 6 comprises perforations 12. The perforations 12 denote holes in the tipping paper 6. In other words, the perforations 12 connect the outer surface 10 of the tipping paper 6 with the inner surface 8 of the tipping paper 6. The perforations 12 improve the ventilation properties of the cigarette 1 to which the tipping paper 6 is affixed. The perforations 12 may be arranged on the tipping paper in a specific pattern at specific areas of the tipping paper 6 but the perforations 12 may also be distributed uniformly over the outer surface area 10 of the tipping paper 6.

[0036] FIG. 3 depicts a tipping paper 6 with a printing 14. The printing 14 is arranged on the outer surface 10 of the tipping paper 6. The printing 14 may cover the outer surface 10 only in part or completely. It is also conceivable to combine several printings 14 on the outer surface 10. For example, the tipping paper 6 may comprise a first printing 14a, which covers the whole outer surface 10, and a second printing 14b, which is arranged on top of the first printing 14a and covers the outer surface 10 only in part. In this example, the two printings 14a, 14b may differ in color. The printing 14 may also be carried out as a hot foil stamping and/or an embossment with or without additional printing ink.

[0037] The applicant reserves his right to claim all features disclosed in the application document as being an essential feature of the invention, as long as they are new, individually or in combination, in view of the prior art. Furthermore, while the above presented preferred embodiments have been made in reference to a cigarette, the invention is not limited to such specific aerosol generating article but applies likewise to any other existing smoking articles comprising a filter and a rod of aerosol generating material comprising tobacco, in particular heat-not-burn articles. It is further noted that in the figures features are described, which can be advantageous individually. Someone skilled in the art will directly recognize that a specific feature being disclosed in a figure can be advantageous also without the adoption of further features from this figure. Furthermore, someone skilled in the art will recognize that advantages can evolve from a combination of diverse features being disclosed in one or various figures.

LIST OF REFERENCE SYMBOLS

[0038] 1 Cigarette [0039] 2 mouthpiece rod [0040] 2a base area [0041] 2b lateral area [0042] 4 tobacco rod [0043] 4a base area [0044] 4b lateral area [0045] 4c circular segment [0046] 6 tipping paper [0047] 8 inner surface [0048] 10 outer surface [0049] 12 perforation [0050] 14 printing [0051] 14a first printing [0052] 14b second printing [0053] L1 longitudinal axis [0054] L2 longitudinal axis [0055] L joint longitudinal axis