Smoking article filter
First Claim
1. A smoking article having a longitudinal axis and comprising a rod of smoking material and a filter rod attached to said rod of smoking material, said filter rod including a mouth end segment made of a sheet of polymeric film gathered to form a plurality of folds in said film, said folds having folded edges extending substantially parallel to the longitudinal axis of the smoking article, said mouth end segment having a mouth end surface formed by a transverse edge of said sheet of film.
5 Assignments
0 Petitions
Accused Products
Abstract
A cigarette smoking article includes a tobacco rod and a dual filter comprising a tobacco rod end segment made of cellulose acetate tow and a mouth end segment made of a gathered, perforated polymeric film blended with a whitener to produce a substantially non-staining mouth end surface. The polymeric film may also comprise a coextruded flavor film with a flavor carrier layer disposed between a pair of barrier layers for releasing a flavorant into the mainstream smoke during smoking of the cigarette. Transparent wraps may be used to construct the cigarette from the component parts so that the filtration surfaces of the filter rod are visible through the wraps.
116 Citations
24 Claims
- 1. A smoking article having a longitudinal axis and comprising a rod of smoking material and a filter rod attached to said rod of smoking material, said filter rod including a mouth end segment made of a sheet of polymeric film gathered to form a plurality of folds in said film, said folds having folded edges extending substantially parallel to the longitudinal axis of the smoking article, said mouth end segment having a mouth end surface formed by a transverse edge of said sheet of film.
- 20. A cigarette having a longitudinal axis and comprising a tobacco rod and a filter rod attached to said tobacco rod, said filter rod including a mouth end segment and a tobacco rod end segment, said mouth end segment comprising a polymeric flavor film containing a whitener, said film being gathered to form a plurality of folds in said film, said folds having folded edges extending substantially parallel to the longitudinal axis of the cigarette, said tobacco rod end segment comprising a filter material, said flavor film comprising a multiple layer film, one layer of which includes a flavorant releasable into mainstream smoke during smoking of the cigarette.
- 23. A filter for a smoking article including a mouth end segment comprising a rod having a longitudinal axis and comprising a sheet of polymeric flavor film gathered to form a plurality of folds in said film, said folds having folded edges extending substantially parallel to the longitudinal axis of the rod, said flavor film having a flavor carrier layer containing a releasable flavorant and disposed between a pair of barrier layers for retaining the flavorant in said flavor carrier layer until the flavor film is contacted by mainstream smoke from a cigarette passing over the flavor film.
Specification