Cigarette ventilation control

A device for making ventilated cigarettes including means for perforating the wrapper web to form ventilated cigarettes and means for controlling the perforating means to adjust the position of the resultant perforations relative to the mouth end of the finished cigarettes, wherein said perforating means comprises perforating pins for perforating the cigarette mechanically.

A device for use in the manufacture of filter cigarettes comprising tobacco portions which are joined to filter portions by means of tipping paper, comprising means for perforating said tipping paper to form ventilated cigarettes including perforating pins for perforating the tipping paper mechanically, and means for controlling said perforating means to adjust the position of the resultant perforations relative to the edge of the tipping paper.

Apparatus for manufacturing ventilated cigarettes, including a perforator for producing a group of perforations in cigarettes, means for measuring the resultant dilution of the finished cigarettes, means for generating a signal indicative of the resultant dilution, and means responsive to said signal for controlling the perforator to alter the distance of the resultant group of perforations from the mouth end of the cigarette so as to achieve the desired level of dilution.

Apparatus for manufacturing ventilated cigarettes, including a perforator for cigarette paper, means for measuring the resultant dilution of finished cigarettes, means for generating a signal indicative of the resultant dilution, and means for controlling the position of said perforator in relation to said cigarette paper to alter the distance of the resultant perforations from the end of the finished cigarette so as to achieve the desired level of dilution in response to the signal from said signal generating means.

A method of manufacturing ventilated cigarettes including the steps of perforating the cigarettes by producing a group of perforations in the wrapper thereof, measuring the resulting dilution of the finished cigarettes, and controlling the perforating to alter the distance of the resultant group of perforations from the end of the subsequently perforated cigarettes so as to adjust the level of dilution to a desired level.

A method of manufacturing ventilated cigarettes, including the steps of perforating wrapper paper used to form ventilated cigarettes, assembling a cigarette with said perforated wrapper paper, measuring the resultant dilution of the assembled cigarette, and controlling the subsequent perforation of the wrapper paper to alter the distance of the resultant group of perforations from the end of the subsequently assembled cigarettes so as to adjust the level of dilution to a desired level.

Apparatus for manufacturing ventilated cigarettes, including a perforator for cigarettes, means for measuring the resultant dilution of the finished cigarettes, means for generating a signal indicative of the resultant dilution, and means responsive to said signal for controlling the perforator to alter the position of the resultant perforations relative to the mouth end of the cigarette so as to achieve the desired level of dilution, wherein said means for controlling the perforator comprises means for adjusting the relative positions of the perforator device and the article being perforated, and wherein said perforator comprises perforating pins for mechanically perforating.

Apparatus for manufacturing ventilated cigarettes, including a perforator for cigarette paper, means for measuring the resultant dilution of finished cigarettes, means for generating a signal indicative of the resultant dilution, and means for controlling the perforator to alter the position of the resultant perforations relative to the end of the finished cigarette so as to achieve the desired level of dilution, wherein said means for controlling the perforator comprises means for adjusting the relative positions of the perforator device and the article being perforated, and wherein said perforator comprises perforating pins for mechanically perforating.

A method of manufacturing ventilated cigarettes comprising the steps of perforating the cigarettes including controlling the size and/or number of perforations to control the permeability of the wrapper of the cigarette to a desired level, measuring the resultant dilution of the finished cigarettes, and controlling the perforating to alter the position of the resultant perforations relative to the end of the subsequently perforated cigarettes so as to adjust the level of dilution to a desired level without significantly altering the overall permeability of the wrapper.

A method of manufacturing ventilated cigarettes, comprising the steps of perforating wrapper paper used to form the ventilated cigarettes including controlling the size and/or number of perforations to control the permeability of the wrapper of the cigarette to a desired level, assembling a cigarette with said perforated wrapper paper, measuring the resultant dilution of the assembled cigarette, and controlling the perforating to alter the position of the resultant perforations relative to the end of the subsequently perforated cigarettes so as to adjust the level of dilution to a desired level without significantly altering the overall permeability of the wrapper.