阅读说明：本技术 气溶胶生成膜 (Aerosol generating film ) 是由 S·卡佩利 J-Y·沃尔默 于 2020-03-18 设计创作，主要内容包括：本发明提供了一种气溶胶生成膜,其包含：基于纤维素的成膜剂；基于非纤维素的增稠剂；水；和多元醇。水的含量小于约30重量％并且多元醇的含量为至少约25重量％。(The present invention provides an aerosol-generating film comprising: a cellulose-based film former; a non-cellulose based thickener; water; and a polyol. The water is present in an amount less than about 30 weight percent and the polyol is present in an amount of at least about 25 weight percent.)

1. An aerosol-generating film substantially free of tobacco, the aerosol-generating film comprising:

a cellulose-based film former;

a non-cellulose based thickener;

water;

nicotine; and

a polyhydric alcohol,

wherein the water is present in an amount of less than about 30 wt% and the polyol is present in an amount of at least about 25 wt%.

2. An aerosol-generating film according to claim 1 wherein the polyol is present in an amount of at least about 40% by weight.

3. An aerosol-generating film according to claim 1 or 2, wherein the cellulose-based film-forming agent is selected from Hydroxypropylmethylcellulose (HPMC), Methylcellulose (MC), Ethylcellulose (EC) and combinations thereof.

4. An aerosol-generating film according to any of claims 1 to 3 comprising at least 10% by weight of the cellulose-based film-forming agent.

5. Aerosol-generating film according to any one of the preceding claims, wherein the non-cellulose based thickener is selected from agar, xanthan, alginate and combinations thereof.

6. An aerosol-generating film according to any preceding claim comprising at least 3% by weight of the non-cellulose based thickener.

7. Aerosol-generating film according to any one of the preceding claims, wherein the polyol is selected from glycerol, propylene glycol and combinations thereof.

8. Aerosol-generating film according to any one of the preceding claims, further comprising an alkaloid compound.

9. Aerosol-generating film according to any one of the preceding claims, further comprising a non-tobacco plant material or plant extract.

10. An aerosol-generating film according to any preceding claim further comprising an acid.

11. An aerosol-generating film according to claim 11 in which the acid is lactic acid or levulinic acid.

12. An aerosol-generating film according to any preceding claim comprising a flavourant.

13. An aerosol-generating film according to any preceding claim consisting of:

about 14% to about 26% by weight HPMC;

about 3% to about 6% by weight of agar;

about 0.5% to about 4% by weight nicotine;

about 0.25 wt% to about 3 wt% of an acid;

about 44% to about 60% by weight of glycerin;

0% to about 2% by weight of a flavoring agent; and

the balance being water.

14. An aerosol-generating film according to any preceding claim, the film having a thickness of less than about 1 mm.

15. An aerosol-generating film according to any preceding claim, the film having a thickness of at least about 0.1 mm.

16. Use of a film according to any one of claims 1 to 16 as an aerosol-generating substrate in an article for generating an inhalable aerosol upon heating.

17. An aerosol-generating article for generating an inhalable aerosol upon heating, the article comprising an aerosol-generating substrate comprising the film according to any one of claims 1 to 16.

Examples

Table 1 below describes the composition of the aerosol-generating film, and the formulation of the film-forming composition from which the aerosol-generating film was obtained.

Table 1:

aerosol-generating films were produced based on the compositions in table 1. For this, HPMC and agar were mixed in glycerol with stirring until dissolved. Water, nicotine and levulinic acid were then added with stirring until dissolved. A layer of the film-forming composition thus obtained is formed on a planar surface and left to cure. A layer of the film-forming composition was formed to a thickness of about 210 microns. The layer of film-forming composition so formed is heated to about 140 degrees celsius for about 8 minutes.

The aerosol-generating film obtained after drying is a solid. In other words, the aerosol-generating film has a stable size and shape and does not flow. The term "stable" is used herein to indicate that the aerosol-generating film according to the invention substantially retains its shape and quality when exposed to various environmental conditions. Thus, it does not substantially release or absorb water when exposed to standard temperatures and pressures while varying the relative humidity from about 10% to about 60%.

This is particularly advantageous as it ensures that the film according to the invention does not release liquid phase during storage or during transport, e.g. from a manufacturing facility to a point of sale.

The aerosol-generating film prepared as described above was heated to a temperature of about 180 degrees celsius to about 250 degrees celsius to simulate the conditions of use in an aerosol-generating device. Nicotine, glycerin and water contained in the film evaporate. The nicotine and glycerin condense to form an inhalable aerosol. The aerosol-generating film shrinks slightly, so its volume decreases. However, the membrane remains solid and maintains its membrane form. It appeared slightly harder and appeared darker brown.