CIGARETTE WITH FILTER Russian patent published in 2018 - IPC A24D3/04 

FIELD: tobacco industry.

SUBSTANCE: invention relates to the filter cigarette. Cigarette with filter comprises tobacco rod containing the shredded tobacco; and filter connected to the tobacco rod end by means of piece of paper; wherein the filter comprises the mouthpiece end segment disposed at an end for the mouthpiece and provided with the fibers bundle comprising the formed in axial direction passage, through which the smoke mainstream is passing; and the front segment connected to the mouthpiece end segment front end and provided with the fibers bundle comprising formed in the axial direction passage, through which the smoke mainstream is passing; and wherein the passage in the mouth end segment cross-sectional area is larger than the passage in the front segment cross-sectional area, provided at the filter front end filtering material containing the fibers bundle, filtering the smoke mainstream, where the filtering material is configured to act as the scraps precipitation preventing means for the cut tobacco into the filter entering prevention, made in the piece of paper ventilation hole, through which the outside air enters the filter for the smoke mainstream dilution; and wherein the ventilation hole is located upstream of the filter mouthpiece end portion in the filter, and wherein the outside air enters the filtration material or the passage in the front segment through the ventilation hole.

EFFECT: prevention of the scraps precipitation, reducing the filter material cost, preventing the filter manufacturing process complication, preventing the filter mouthpiece end face contamination with the tar.

3 cl, 9 dwg