US3738376A - Manufacture of cigarettes and other tobacco-filled rod-like articles - Google Patents

Manufacture of cigarettes and other tobacco-filled rod-like articles Download PDF

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Publication number
US3738376A
US3738376A US00019286A US3738376DA US3738376A US 3738376 A US3738376 A US 3738376A US 00019286 A US00019286 A US 00019286A US 3738376D A US3738376D A US 3738376DA US 3738376 A US3738376 A US 3738376A
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United States
Prior art keywords
rod
cigarette
tobacco
density
mean
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Expired - Lifetime
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US00019286A
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English (en)
Inventor
F Labbe
G Powell
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Molins Machine Co Ltd
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Molins Machine Co Ltd
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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/32—Separating, ordering, counting or examining cigarettes; Regulating the feeding of tobacco according to rod or cigarette condition
    • A24C5/34—Examining cigarettes or the rod, e.g. for regulating the feeding of tobacco; Removing defective cigarettes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
    • G01N23/12—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the material being a flowing fluid or a flowing granular solid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S131/00—Tobacco
    • Y10S131/905—Radiation source for sensing condition or characteristic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S131/00—Tobacco
    • Y10S131/906—Sensing condition or characteristic of continuous tobacco rod
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S131/00—Tobacco
    • Y10S131/907—Ejection or rejection of finished article due to detected or sensed condition

Definitions

  • ABSTRACT A device which scans the density of successive in crements of a cigarette rod produced in a cigarette making machine, is used to control the mean weight of the tobacco in that rod with a view toward maintaining substantially constant the number of cigarettes produced having a weight falling below a preselected level. Signals produced by the scanner are used to control the quantity ofexcess tobacco removed from the filler stream formed therein by a trimming device, thereby controlling the quantity of tobacco placed in said rod.
  • a scanning device for example a Beta ray device, for detecting the density of the cigarette rod as it passes the scanning device and for controlling the amount of tobacco forming the cigarette, with a view to maintaining the tobacco content in the cigarettes constant as far as possible.
  • the tobacco content in terms of weight per unit length may be varied by varying the distance of a trimmer from a suction band carrying the tobacco filler, for example as described in U.S. Pat. No. 3,089,497.
  • the tobacco filler is commonly enclosed in a continuous web, usually of paper, which forms the cigarette wrapping.
  • W being the nominal weight of the cigarettes and W being the actual weights of each of N cigarettes. Accordingly it has been possible to set the nominal weight (i.e. the mean weight as controlled by the Beta ray or other measuring device) at a relatively low value which, owing to the low standard deviation, nevertheless resulted in substantially all the cigarettes having a weight above a threshold value T which was a value below which a cigarette manufacturer would want no more than a certain very small percentage of cigarettes (for example about 0.135 percent) to be.
  • the actual percentage below T which could be tolerated depended upon any given manufacturers requirements in relation to the desired quality of his cigarettes, as did the chosen value of T.
  • the threshold weight T may for example be 7% percent below the mean weight.
  • One aspect of the present invention is concerned with a departure from that previous concept of cigarette manufacture. This departure is based on a con-- cept of varying the mean weight of the cigarettes continuously in order to maintain substantially constant an operating characteristic relating to the number of cigarettes having a weight below a predetermined threshold weight T which may or may not be the same as the threshold weight T specified previously.
  • a predetermined threshold weight T which may or may not be the same as the threshold weight T specified previously.
  • all cigarettes having a weight below the value T are automatically ejected from the production line. These cigarettes may subsequently simply be stripped so that the tobacco filling can be re-used.
  • these underweight cigarettes may in principle be subjected to a further test, for example a continuous filling-pressure test, (e.g. as described in U.S. Pat. No. 3,633,590), after which they are ejected and stripped only if they have also failed the further test.
  • This invention enables a cigarette making machine to operate at a lower mean filling weight than hitherto, with a consequent saving of tobacco.
  • FIGS. 1 and 2 are graphs showing weight distributions of cigarettes during manufacture
  • FIG. 3 is a diagrammatic drawing of parts of one apparatus according to this invention.
  • FIG. 4 is a block diagram of a system wherein several cigarette making machines are controlled by a central computer.
  • FIGS. 1 and 2 are graphs showing cigarette weight (X) against proportional distribution (Y). That is to say Y represents the proportion of cigarettes which have any given weight X.
  • the curve C in FIG. 1 is a curve corresponding to a cigarette making system designed to produce only a very small and insignificant number of cigarettes below a threshold weight of T, the mean weight in this case being Ml.
  • the mean weight may at any given moment be for example M2, giving a curve of cigarette distribution C2.
  • this curve C2 there is an area Al (shown shaded) representing the number of cigarettes which have a weight less than T.
  • Al shown shaded
  • These underweight cigarettes may according to this invention be ejected and stripped so that the tobacco contained in those cigarettes can be re-used.
  • M2 is less than M1, so that cigarette manufacture according to the curve C2 will use less tobacco while still ensuring that substantially no cigarettes are produced with a weight less than T.
  • the mean weight is preferably varied automatically in order to keep substantially constant the number of cigarettes having a weight which falls below the value T.
  • This control is desirable because the standard deviation of the cigarette making machine may increase or decrease slightly from time totime, giving a flatter or sharper curve C2. Variation in standard deviation may for example be caused by variations in the quality of the tobacco or in the tobacco moisture content or temperature. If the mean weight were kept constant at M2, a temporarily flatter curve (i.e. resulting from a higher standard deviation) would result in more cigarettes falling below T in weight. This is illustrated by FIG. 2, which again shows the curve C2 (as in FIG.
  • each machine may have a recorder unit for recording information (e.g. relating to cigarette weights) .which is transmitted at regular intervals to a central computer serving all the machines, for example as described in (1.8. application Ser. No. 840,279, filed July 9, 1969.
  • This computer receives information from each machine in turn, for example about once a minute, and calculates the standard deviation; this computer may also take account of other factors (for example the moisture content and temperature of the tobacco) in sending back a signal to each machine to change the mean weight if necessary.
  • the standard deviation may be derived by counting up the number of cigarettes obtained from a given length of the cigarette rod which have a weight coming between two predetermined limits.
  • the lower limit may be the threshold weight (or zero) and the upper limit may be a value greater than the mean weight and can be chosen so that the proportion of cigarettes coming between these two limits bears an approximately linear relationship to the standard deviation.
  • each machine may have provision for computing continuously the standard deviation on the basis, for example, of a predetermined number of the last cigarettes to have been made up to any particular instant.
  • the threshold ratio S may be approximately equal to 3, where S (M2 T)/.
  • the instrument error in detecting the cigarette weight may be as high as 1.1 percent. There is consequently what may be termed a low signal to noise ratio, for example 25:1. 1. The ratio would be better (i.e. higher) if the instrument error were smaller, but it is not easy to reduce the instrument error or noise, especially in the case of a Beta ray or other scanning device which is arranged to'have a fast response so as to be sensitive to variations between very short increments of the cigarette rod, for example of the order of l or 2 mm. in length.
  • a preferred system according to this invention in which an improved signal to noise ratio can be obtained, is one in which the mean weight of the cigarettes is controlled by sensing the density of short cigarette sections of predetermined length, for example to 12 mm.
  • the short sections are preferably the end portions of the cigarettes.
  • the end portions may be at the untipped ends of the cigarettes (i.e. remote from the filter).
  • the arrangement may be one in which the cuts separating adjacent cigarettes pass through the centers of the end portions.
  • the end portions may be filled with tobacco at a greater density than the remainder of the cigarettes.
  • the standard deviation of the tobacco filling in the end portions may be of the order of say 5 percent.
  • the noise or instrument error in reading ends density is higher than for cigarettes as a whole, for example, 1.65 percent, but
  • the signal to noise ratio (e.g. 521.65) is nevertheless better than in the case of a control based on the cigarette as a whole. Consequently, according to this method, fewer satisfactory cigarettes (on the basis of ends quality) will be rejected and fewer unsatisfactory cigarettes will be allowed to proceed. Moreover it is significant that this method of control directly governs the ends quality which is important to the consumer.
  • the density signal for each cigarette or cigarette end is not taken as an absolute reading but is assessed with reference to a running mean reading taken from a number of adjacent cigarettes.
  • a time delay device may be used so that each signal is taken with reference to a mean value based on the signals derived from two or more upstream cigarettes (or increments) and two or more downstream cigarettes (or increments); alternatively the reference point may be the mean of the last three or more cigarettes or increments.
  • the mean reading from the adjacent cigarettes may be used as a reference from which to determine the cigarette mean relative density.
  • the actual reference point may however in fact be based on an absolute value with a running correction (i.e.
  • a bias in one direction or the other derived from the mean readings of the adjacent cigarettes.
  • a degree of compensation can be obtained for short-term variations in tobacco filling power. For example, if the filling power were to drop temporarily owing to an increase in the proportion of shorts, with a consequent increase in the mean weight, a cigarette which is somewhat lighter than the mean of the few adjacent cigarettes containing the same sort of tobacco might still be above an absolute threshold weight, but would be correctly rejected on the basis of a comparison with the mean since it would be inadequately filled having regard to the low filling power of its tobacco; in other words it would be liable to be too soft.
  • the converse occurs where the tilling power of the tobacco is temporarily higher than average; that is to say, comparison with the mean of the adjacent cigarettes may save a slightly light cigarette from being ejected where it is in fact sufficiently firm to be accepted.
  • FIG. 3 shows an example of a system according to this invention for varying the mean weight of the tobacco in the cigarette rod in response to the mean density of the end portions.
  • a continuous cigarette rod 2 passes through a guide tube 4 which has openings through which Beta rays from a source 6 pass.
  • the beam of Beta rays enters a radiation detector which, in the example shown, is an ionization chamber 8 comprising a shell 10 and an electrode 12 which is electrically insulated from the shell.
  • a balance unit comprising a radiation source 6A and an ionization chamber 8A which is similar to the ionization chamber 8.
  • the amount of radiation reaching the chamber 8A is controlled by means of a movable absorption member 14 which in the arrangement shown is pivotally mounted at 16.
  • a DC. potential is connected across terminals 18 and 20 on the shells of the ionization chambers. Consequently at a point 22 on a conductor connecting the electrodes 12 and 12A there is a signal of which the strength depends upon the density of the cigarette rod.
  • the signal at 22 is fed via an amplifier 24 and a control input 26 to a point 28 connected to two discriminator circuits 30 and 32. These discriminator circuits are sensitive respectively to positive and negative signals. Each is connected to a relay 34 or 36 which controls the connection of a voltage supply to a reversible electric motor 33.
  • one or other relay is operated by the appropriate discriminator circuit so as to drive the motor 38 in one direction or the other so as to correct the rod density.
  • the motor 38 may for example control the position of a tobacco trimmer 50 as already mentioned.
  • a switch 40 which opens and closes rapidly under the control of a rotating cam 42.
  • the cam rotates at a speed corresponding to one revolution per cigarette length and is arranged to close the switch while each cigarette end portion is passing through the scanning device (i.e. past the radiation source 6).
  • the signal from the end portions is thus transmitted to a computer 44.
  • This computer may calculate the standard deviation in various ways; it thus provides an output signal to the control input 26 so as to vary the mean weight.
  • control input introduces a positive or negative signal (as the case may be) so as to change the mean weight of the tobacco in the rod, for example by moving the trimmer 50; i.e., the mean position of the trimmer is changed.
  • the absorption member 14 of the balance unit may for example be exercised by moving the absorption member 14 of the balance unit.
  • the member 14 may for example be movable into different positions by means of an electric servo motor in the well-known manner conventionally provided in control systems.
  • the member 14 may for example be in the form of a disc mounted to rotate about an axis parallel to the beam from the radiation source 6A, the edge of the disc being so shaped (i.e. like a cam) as to intersect the beam by a variable amount depending upon the angular position of the disc.
  • the rod Downstream of the scanning device the rod is cut into cigarette lengths by means of a cut-off device (not shown). Still further downstream there is an ejector device 52 of standard configuration for ejecting cigarettes of which the ends have a density falling below the threshold level. The ejector device may also eject overheavy cigarettes.
  • a method of making cigarettes or the like comprising enclosing a tobacco filler in a continuous web to form a continuous rod adapted to be cut into cigarette lengths, detecting the density of those portions of the rod intended to become cigarette end portions by means of a scanning device which is arranged in a position along the path of the rod and gives output signals relating to the density of the tobacco filling in the rod, the output corresponding to the density of the intended cigarette end portions, varying the amount of tobacco placed in the cigarette rod in response to said output signals to maintain substantially constant the number of cigarette end portions having a mean density which falls below a predetermined level.
  • a method according to claim 1 including chopping the output signals from the scanning device into a sequence of pulses representing the densities of successive short increments of the rod.
  • Apparatus for making cigarettes or the like comprising means for wrapping a continuous web around a tobacco filler to form a continuous cigarette rod adapted to be cut into cigarette lengths; means for varying the mean weight of the tobacco filler; a scanning device which scans the cigarette rod and is arranged to provide output signals at intervals timed so as to correspond to portions of the rod intended to become end portions of the cigarettes; means for repeatedly computing the mean density of the intended end portions; and means for automatically varying the mean density of the tobacco filler in response to the computed mean density of successive end portions so as to maintain constant the number of cigarette end portions obtained from a given length of rod having a mean density which falls below a predetermined level.
  • a method of making cigarettes or the like comprising enclosing a tobacco filler in a continuous web to form a continuous rod adapted to be cut into cigarette lengths, detecting the density of the tobacco in said rod with a scanning device arranged along the path of the rod to provide outputs signals related to the density of successive linear increments of the tobacco in said rod, comparing the signal from the scanning device for each linear rod increment to the mean of signals from a number of adjacent increments, and controlling the mean weight of the tobacco entering said rod in response to the results of said signal comparing.
  • Apparatus for making cigarettes or the like cornprising means for enclosing a tobacco filler in a continuous web to form a continuous cigarette rod adapted to be cut into cigarette lengths, a scanning device arranged along the path of the rod to provide output signals related to the density of successive linear increments of the tobacco in said rod, means for comparing the signal from the scanning device for each linear rod increment to the mean of signals from a number of ad jacent increments, and means for varying the mean weight of the tobacco entering said rod in response to the output of said comparing means.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
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  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
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  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
US00019286A 1969-03-14 1970-03-13 Manufacture of cigarettes and other tobacco-filled rod-like articles Expired - Lifetime US3738376A (en)

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GB1368569 1969-03-14

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US (1) US3738376A (de)
JP (1) JPS50920B1 (de)
AT (1) AT310634B (de)
BE (1) BE747270A (de)
CH (1) CH533426A (de)
FR (1) FR2038050A5 (de)
GB (1) GB1309543A (de)
NL (1) NL7003646A (de)
SE (1) SE358283B (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3999134A (en) * 1974-08-29 1976-12-21 Hauni-Werke Korber & Co., Kg Method and apparatus for measuring the density of filling material in rod-shaped smokers' products taking into account the moisture of the filling material
US4036238A (en) * 1975-02-10 1977-07-19 The Japan Tobacco & Salt Public Corporation Apparatus for controlling amount of tobacco filler in cigarette manufacturing machine
US4037608A (en) * 1974-09-11 1977-07-26 Hauni-Werke Korber & Co., Kg Method and apparatus for producing cigarettes with dense ends
US4326542A (en) * 1980-01-14 1982-04-27 Philip Morris Incorporated Firmness control in a cigarette maker
US4513755A (en) * 1981-04-30 1985-04-30 Sasib S.P.A. Control device for regulating the feeding of cut tobacco to a cigarette making machine
US4522214A (en) * 1980-01-14 1985-06-11 Philip Morris Incorporated Method and apparatus for controlling a cigarette maker to produce a cigarette rod with predetermined moisture content
US4836221A (en) * 1986-10-31 1989-06-06 Japan Tobacco Inc. Device for controlling contents of tobacco on cigarette manufacturing machine
US4858626A (en) * 1986-12-17 1989-08-22 G.D. Societa' Per Azioni Method of optimizing the standard weight variation of cigarettes on a dual-rod cigarette manufacturing machine
US4865054A (en) * 1987-01-31 1989-09-12 Korber Ag Method of and apparatus for making and processing streams of fibrous material of the tobacco processing industry
US4875494A (en) * 1987-02-21 1989-10-24 Korber Method of and apparatus for making a rod of fibrous material
EP0617901A2 (de) * 1993-03-29 1994-10-05 Japan Tobacco Inc. System zur Überwachung der Menge von geschnittenem Takak in Zigaretten
US5531234A (en) * 1992-02-18 1996-07-02 Japan Tobacco Inc. Apparatus for controlling the filling amount of shredded tobacco in cigarettes
US20090005989A1 (en) * 2007-05-31 2009-01-01 Philip Morris Usa Inc. Inspection systems and methods for multi-segment products

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2441832A1 (de) * 1974-08-31 1976-03-11 Hauni Werke Koerber & Co Kg Verfahren und anordnung zum kapazitiven pruefen der tabakdichte in den enden von stabfoermigen artikeln der tabakverarbeitenden industrie

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2357801A (en) * 1941-07-16 1944-09-12 American Mach & Foundry Cigarette kickout
US2667172A (en) * 1946-08-21 1954-01-26 American Mach & Foundry Cigarette rod condition measuring and indicating
US2800131A (en) * 1953-03-16 1957-07-23 Molins Machine Co Ltd Machines for manipulating cut tobacco
US2937280A (en) * 1953-09-24 1960-05-17 American Mach & Foundry Detecting apparatus
US2938521A (en) * 1957-01-11 1960-05-31 Decoufle Usines Tobacco-manipulating machines
US2952262A (en) * 1957-01-30 1960-09-13 Molins Machine Co Ltd Manufacture of cigarettes
US3082323A (en) * 1958-06-25 1963-03-19 Ind Nuclconics Corp Radiation analysis
US3242321A (en) * 1965-02-11 1966-03-22 Industrial Nucleonics Corp Automatic machine analyzer
US3242927A (en) * 1960-11-04 1966-03-29 Mollins Organisation Ltd Tobacco manipulating machines
US3259746A (en) * 1960-02-29 1966-07-05 American Tobacco Co Apparatus for automatically weighing and totalizing the production time intervals of a plurality of different weight categories of cigarettes during manufacture

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2357801A (en) * 1941-07-16 1944-09-12 American Mach & Foundry Cigarette kickout
US2667172A (en) * 1946-08-21 1954-01-26 American Mach & Foundry Cigarette rod condition measuring and indicating
US2800131A (en) * 1953-03-16 1957-07-23 Molins Machine Co Ltd Machines for manipulating cut tobacco
US2937280A (en) * 1953-09-24 1960-05-17 American Mach & Foundry Detecting apparatus
US2938521A (en) * 1957-01-11 1960-05-31 Decoufle Usines Tobacco-manipulating machines
US2952262A (en) * 1957-01-30 1960-09-13 Molins Machine Co Ltd Manufacture of cigarettes
US3082323A (en) * 1958-06-25 1963-03-19 Ind Nuclconics Corp Radiation analysis
US3259746A (en) * 1960-02-29 1966-07-05 American Tobacco Co Apparatus for automatically weighing and totalizing the production time intervals of a plurality of different weight categories of cigarettes during manufacture
US3242927A (en) * 1960-11-04 1966-03-29 Mollins Organisation Ltd Tobacco manipulating machines
US3242321A (en) * 1965-02-11 1966-03-22 Industrial Nucleonics Corp Automatic machine analyzer

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3999134A (en) * 1974-08-29 1976-12-21 Hauni-Werke Korber & Co., Kg Method and apparatus for measuring the density of filling material in rod-shaped smokers' products taking into account the moisture of the filling material
US4037608A (en) * 1974-09-11 1977-07-26 Hauni-Werke Korber & Co., Kg Method and apparatus for producing cigarettes with dense ends
US4036238A (en) * 1975-02-10 1977-07-19 The Japan Tobacco & Salt Public Corporation Apparatus for controlling amount of tobacco filler in cigarette manufacturing machine
US4326542A (en) * 1980-01-14 1982-04-27 Philip Morris Incorporated Firmness control in a cigarette maker
US4522214A (en) * 1980-01-14 1985-06-11 Philip Morris Incorporated Method and apparatus for controlling a cigarette maker to produce a cigarette rod with predetermined moisture content
US4513755A (en) * 1981-04-30 1985-04-30 Sasib S.P.A. Control device for regulating the feeding of cut tobacco to a cigarette making machine
US4836221A (en) * 1986-10-31 1989-06-06 Japan Tobacco Inc. Device for controlling contents of tobacco on cigarette manufacturing machine
US4858626A (en) * 1986-12-17 1989-08-22 G.D. Societa' Per Azioni Method of optimizing the standard weight variation of cigarettes on a dual-rod cigarette manufacturing machine
US4865054A (en) * 1987-01-31 1989-09-12 Korber Ag Method of and apparatus for making and processing streams of fibrous material of the tobacco processing industry
US4875494A (en) * 1987-02-21 1989-10-24 Korber Method of and apparatus for making a rod of fibrous material
US5531234A (en) * 1992-02-18 1996-07-02 Japan Tobacco Inc. Apparatus for controlling the filling amount of shredded tobacco in cigarettes
EP0617901A2 (de) * 1993-03-29 1994-10-05 Japan Tobacco Inc. System zur Überwachung der Menge von geschnittenem Takak in Zigaretten
US5526827A (en) * 1993-03-29 1996-06-18 Japan Tobacco Inc. System for monitoring the quantity of cut tobacco in cigarettes
EP0617901A3 (de) * 1993-03-29 1996-12-18 Japan Tobacco Inc System zur Überwachung der Menge von geschnittenem Takak in Zigaretten.
US20090005989A1 (en) * 2007-05-31 2009-01-01 Philip Morris Usa Inc. Inspection systems and methods for multi-segment products
US7784356B2 (en) * 2007-05-31 2010-08-31 Philip Morris Usa Inc. Inspection systems and methods for multi-segment products

Also Published As

Publication number Publication date
FR2038050A5 (de) 1970-12-31
GB1309543A (en) 1973-03-14
DE2011933A1 (de) 1970-11-26
SE358283B (de) 1973-07-30
AT310634B (de) 1973-10-10
NL7003646A (de) 1970-09-16
BE747270A (fr) 1970-08-17
JPS50920B1 (de) 1975-01-13
CH533426A (fr) 1973-02-15
DE2011933B2 (de) 1977-06-30

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