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US 12,702,158 B2Granted
Filter for smoking or vaping article comprising a two-layer material
AssigneeSWM Holdings US, LLC
InventorsPatrick Guilchet, Diane Raverdy-Lambert
Life of this patent
Estimating the term…
Abstract
The invention provides a material which comprises a paper substrate and a nonwoven substrate having a low density which can be used as filter for a smoking or vaping article.
Claims17
A filter comprising a two-layer material comprising:
- a paper substrate having a density of between 500 mg/cm3 and 200 mg/cm3, and
- a nonwoven substrate having a density of between 7 mg/cm3 and 60 mg/cm3,
- wherein the paper substrate forms a first layer, the nonwoven substrate forms a second layer, and the first layer is in contact with the second layer.
Dependencies are inferred from the claim text.