Method to produce a sheet of material containing alkaloids

Patent metadata

Field	Value
Publication number	US-12426618-B2
Application number	US-202017779246-A
Country	US
Kind code	B2
Filing date	Nov 30, 2020
Priority date	Dec 18, 2019
Publication date	Sep 30, 2025
Grant date	Sep 30, 2025

Abstract

The invention relates to a method for the preparation of a sheet of a material containing alkaloids, said method comprising: —grinding a material containing alkaloids to a powder; —combining the powder with a binder, an aerosol former and water, so as to form a slurry, wherein the slurry comprises: •the powder of the material containing alkaloids in an amount comprised between about 40 percent and about 70 percent of the total weight of the slurry; •the water in an amount comprised between about 30 percent and about 55 percent of the total weight of the slurry; •the binder in an amount comprised between about 0 percent and about 1 percent of the total weight of the slurry; •the aerosol former in an amount comprised between 1 percent and about 5 percent of the total weight of the slurry; —applying the slurry to a substrate sheet including fibres so as to form a sheet of a material containing alkaloids.

First claim

The invention claimed is:

1. A method for the production of a sheet of a material containing alkaloids, said method comprising:
grinding a material containing alkaloids to a powder;
combining the powder with a binder, an aerosol former and water, so as to form a slurry, wherein the slurry comprises:
the powder of the material containing alkaloids in an amount of between about 40 percent and about 70 percent of the total weight of the slurry;
the water in an amount of between about 30 percent and about 55 percent of the total weight of the slurry;
the binder in an amount of between about 0 percent and about 1 percent of the total weight of the slurry; and
the aerosol former in an amount of between 1 percent and about 5 percent of the total weight of the slurry; and

applying the slurry to a substrate sheet including fibres so as to form a sheet of a material containing alkaloids.

2. The method according to claim 1 , further comprising the step of:
drying the sheet of a material containing alkaloids to obtain a dry sheet of material containing alkaloids.

3. The method according to claim 1 , wherein the step of grinding a material containing alkaloids to a powder comprises
grinding a blend of tobacco of one or more tobacco types to a tobacco powder.

4. The method according to claim 3 , wherein the step of grinding a blend of one or more tobacco types comprises blending tobacco of one or more tobacco types of the following tobaccos:
Bright tobacco;
Dark tobacco;
Aromatic tobacco; and
Filler tobacco.

5. The method according to claim 1 , wherein the step of applying the slurry to a substrate sheet including fibres comprises providing a substrate sheet including cellulose fibres.

6. The method according to claim 1 , wherein the step of applying the slurry to a substrate sheet including fibres comprises applying the slurry to a substrate sheet including fibres having a nominal average fibre length of between about 0.7 millimetres and about 50 millimetres.

7. The method according to claim 1 , wherein applying the slurry to a substrate sheet including fibres so as to form a sheet of a material containing alkaloids comprises coating or impregnating the substrate sheet with the slurry.

8. The method according to claim 1 , wherein applying the slurry to a substrate sheet including fibres so as to form a sheet of a material containing alkaloids comprises spraying the slurry onto the substrate sheet.

9. The method according to claim 2 , wherein the substrate sheet has a thickness comprised between 0.175 millimetres and about 0.250 millimetres.

10. The method Method-according to claim 1 , wherein the substrate sheet has a width of between about 100 millimetres and about 2500 millimetres.

11. The method according to claim 1 , wherein grinding a material containing alkaloids to a powder comprises grinding a material containing alkaloids to a powder having a size of between about 8 microns and about 200 microns.

12. The method according to claim 1 , wherein the substrate sheet defines a first and a second surface and the step of applying the slurry to the substrate sheet comprises applying the slurry to the first surface and to the second surface of the substrate sheet.

13. The method according to claim 1 , comprising the step of applying a flavour to the sheet of material containing alkaloids.

14. The method according to claim 1 , wherein the viscosity of the slurry is between about 18000 centipoise and about 45000 centipoise.

Assignees

• Philip Morris Products Sa

Inventors

• Del Borrello Michele

Classifications

• A24B3/14

  Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products (delustering A24C1/40) · CPC title

• A24B15/167

  in liquid or vaporisable form, e.g. liquid compositions for electronic cigarettes · CPC title

• A24B3/08

  Blending tobacco · CPC title

• A24B5/10

  by crushing the leaves with subsequent separating · CPC title

• A24B15/14 Primary

  made of tobacco and a binding agent not derived from tobacco · CPC title