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1. WO2020002646 - METHOD FOR PRODUCING A BOBBIN INCLUDING A MATERIAL CONTAINING ALKALOIDS

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Claims

Method for producing a bobbin, the method comprising the steps of:

- providing a web of a material containing alkaloids, wherein the web of a material containing alkaloids contains at least about 5 percent in dry weight basis of an aerosol -former;

- feeding the web of a material containing alkaloids to an embossing device in a transport direction;

- embossing the web of a material containing alkaloids to form an embossed web of a material containing alkaloids;

- winding the embossed web of a material containing alkaloids in a bobbin.

2. Method according to claim 1, comprising the step of unwinding a mother bobbin comprising a wound web of a material containing alkaloids in such a way to provide the web of a material containing alkaloids.

3. Method according to claim 1 or 2, wherein the step of embossing comprises feeding the web of a material containing alkaloids between a first and a second embossing rollers so that the first and second embossing rollers apply an embossing pattern to at least a surface of the web.

4. Method according to claim 3, wherein the embossing pattern includes a plurality of protrusions applied on at least a surface of the web.

5. Method according to claim 4, wherein the plurality of protrusions includes ridges and/or troughs.

6. Method according to claim 5, wherein the ridges and/or troughs extend in a direction orthogonal or parallel to the transport direction.

7. Method according to any one of claims 4 to 6, wherein an amplitude of the plurality of protrusions is comprised between about 10 and about 150 percent of the thickness of the web.

8. Method according to any of claims 4 to 7, wherein the plurality of protrusions has a pitch comprised between about 100 and about 500 percent of the thickness of the web.

9. Method according to any of claims 1 to 8, wherein the web of a material containing alkaloids has a thickness of between about 100 micron and about 300 micron.

10. Method according to any of claims 1 to 9, wherein the step of winding the embossed web comprises:

- feeding the embossed web to a rotatable center core; and

- rotating the rotatable center core so as to wind the embossed web around it to form the bobbin.

11. Method according to any of claims 1 to 10, wherein the web of a material containing alkaloids comprises:

o particles of the material containing alkaloids having a mean size comprised between about 0.03 millimetres and about 0.12 millimetres;

o a binder; and

o water.

12. Method according to any of claims 1 to 11, wherein said material containing alkaloids is a tobacco material.

13. Method for producing an aerosol generating article including the step of unwinding the bobbin realized according to any one of claims 1 to 12.

14. Bobbin of an embossed web of a material containing alkaloids realized according to one or more of claims 1 - 13.