Multi-Filter for a Smoking Product
AssigneeBritish American Tobacco (Germany) GmbH
InventorsHorst Grzonka, Markus Schosnig, Eduard Nica, Paulo Oliveira, John Richardson, Martin Graham Duke, Maya Nikolaeva
Life of this patent
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Abstract
Filter for a smoking product (1), comprising a first filter segment (2) and a second filter segment (3), wherein the first filter segment (2) comprises a component that is given off into a smoke stream passing through a filter outlet opening (4), and the second filter segment (3) comprises a sorption means (6) that absorbs a component from a smoke stream passing through the filter inlet opening (5).
Claims22
A filter for a smoking product, wherein the filter is a ventilated filter comprising a first filter segment and a second filter segment, wherein the first filter segment comprises a component which is dispensed to a smoke flow passing through a filter outlet opening, and the second filter segment comprises a sorption agent which sorbs a component from a smoke flow passing through a filter inlet opening, and wherein at least one filter segment comprises at least one recess on its circumferential area.
A method for manufacturing a filter for smoking products, comprising:
- providing a continuous rod of a filter base element with a component to be dispensed to a smoke flow;
- attaching a base wrapping to the circumference of the continuous rod of the filter base element, to produce a first filter segment;
- providing a continuous rod of a second filter base element with a sorption agent, which sorbs a component from a smoke flow;
- attaching a base wrapping to the circumference of the continuous rod of the second filter base element, to produce a second filter segment;
- combining elements of both filter segments, which have been correspondingly cut to length, to form a filter rod having a length which is a multiple of that of a filter, by circumferentially gluing the filter segments to a filter wrapping;
- and
- providing the filter rod having the length which is the multiple of that of the filter with recesses.
Dependencies are inferred from the claim text.