Device for filtering smoke
OwnerAndreas Setzerinventor
Life of this patent
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Abstract
A device for filtering smoke, in particular tobacco and/or cannabis cigarette filters, comprising a jacket, in which jacket there are provided at least a first portion, a second portion and a third portion, the second portion being arranged between the first portion and the third portion, wherein in the first section a first nonwoven filter material, in the second section a porous filter material, and in the third section a second nonwoven filter material being provided in the third section; wherein a fourth section is provided in the jacket, wherein the third section is arranged between the second section and the fourth section, and wherein the fourth section is arranged such that, when flowing through the jacket, a pressure drop across the fourth section is lower than a pressure drop across the third section.
Claims22
A device for filtering smoke, with a wrap formed by a filter wrap paper, wherein at least a first section, a second section and a third section are provided in the wrap, wherein the second section is disposed between the first section and the third section, wherein
- a first nonwoven filter material is provided in the first section;
- a porous filter material is provided in the second section;
- and a second nonwoven filter material is provided in the third section;
- wherein a fourth section is provided in the wrap, wherein the third section is disposed between the second section and the fourth section, and wherein the fourth section is configured in a manner such that a pressure drop over the fourth section is smaller than a pressure drop over the third section as a flow passes through the wrap, wherein the fourth section has a support element that supports the wrap in the region of the fourth section,
- wherein the porous filter material is activated carbon.
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Dependencies are inferred from the claim text.