US3739785A - Cigarette with coated wrapper ventilation flaps - Google Patents

Cigarette with coated wrapper ventilation flaps Download PDF

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Publication number
US3739785A
US3739785A US00250064A US3739785DA US3739785A US 3739785 A US3739785 A US 3739785A US 00250064 A US00250064 A US 00250064A US 3739785D A US3739785D A US 3739785DA US 3739785 A US3739785 A US 3739785A
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United States
Prior art keywords
wrapper
flap
smoking article
slit
encircling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US00250064A
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English (en)
Inventor
W Stephens
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Philip Morris USA Inc
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Philip Morris USA Inc
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Publication date
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/02—Indicating direction only, e.g. by weather vane
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
    • G01F1/64—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by measuring electrical currents passing through the fluid flow; measuring electrical potential generated by the fluid flow, e.g. by electrochemical, contact or friction effects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/005—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by using a jet directed into the fluid
    • G01P5/006—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by using a jet directed into the fluid the jet used is composed of ionised or radioactive particles

Definitions

  • ABSTRACT A ventilated cigarette employing one or more flaps defined by slit patterns in the wrapper thereof and which flaps are adapted to move away from the wrapper encircling course when the cigarette is puffed to admit ventilating or diluting air streams to the tobacco cylinder which is made with the slit pattern fashioned to ex tend generally transverse of the article longitudinal axis to provide flap movement about a hinge line disposed generally parallel to said longitudinal axis.
  • the slit pattern can be made the the form of an X, a V or other suitable configuration.
  • the article further has a coating of an air-impervious normally rigid material on either the inner or outer surface of the wrapper in covering and encircling expanse about each slit pattern and associated flap to normally constrain or hold the flap in the encircling wrapper course.
  • Certain patents have disclosed means of ventilating cigarettes to reduce TPM delivery by using openings in the wrapper to provide a point of entry of ventilation air to the cigarette.
  • Some patents disclose formation of slits in the wrapper to give flaps which open by being drawn inward with the puff on the cigarette, e.g., U. S. Pat. Nos. 3,057,360 and 3,020,915.
  • U. S. Pat. No. 3,054,409 causes the slits to remain open by reinforcing them with a stiffening coating while in U. S. Pat. No. 3,310,055 it is taught to reinforce wrapper perforations by printing with a special ink or other material on the wrapper adjacent the openings.
  • the present invention is concerned with a cigarette which employs ventilation features as a means for controlling the TPM delivery profile of the smoke delivered to the smoker. It is more particularly concerned with ventilation type cigarettes wherein the paper wrapper of the cigarette which is drawn tightly against the tobacco for holding it under radial constraint thereby producing a circular tension in the wrapper, is provided with an arrangement therein of one or more slits of predetermined pattern and at predetermined positioning from the smoking or lighting end of the cigarette which slit patterns define corresponding flaps in the wrapper which are movable away from the encircling wrapper course when the cigarette is puffed to admit dilution air flow to the cylinder of tobacco.
  • each flap in the cigarette wrapper is maintained in a normally constrained position disposed in the encircling wrapper course by means of an air-impervious normally rigid material coating applied preferably at the inner side of the wrapper with the coating being disposed in a covering and encircling expanse around each slit and associated flap.
  • the material is such as to be softenable responsive to the presence of heat from warm smoke and the burning coal of the cigarette or responsive to the action of smoke ingredients so that after the cigarette has been smoked to a predetermined distance, the material softens and permits the flap or flaps to move away from the wrapper encircling course either inwardly or outwardly thereof under the impetus of the circular tension in the wrapper and to thereby admit ventilation air.
  • the arrangement of flaps in the wrapper is such that more are located near the mouth end than the smoking end so that increasing measures of ventilation air will be admitted in the later stage puffs when the TPM levels show a steep upwardly incline.
  • various materials can be employed as the coating, as for example, hot melt adhesives, as well as various types of resin materials.
  • each slit pattern is formed to have a total slit length of between 2 to 6 mm. and the slits can be in various forms, as for example, in the fashion of an X, V or such other configuration as extends generally transverse of the longitudinal axis of the article to provide movement of the associated flaps about a hinge line disposed generally parallel to said axis.
  • the slit patterns and accordingly the therewith defined flaps in the paper wrapper can be arranged in extending longitudinal array in the wrapper on a centerline spacing of about 5 mm. between adjacent ones of the slit patterns. Further, the slit patterns can be arranged in side-byside parallel arrangement extending in two or more rows longitudinally of the wrapper, each slit pattern being aligned with at least one other slit pattern.
  • the coating applied on and around each slit pattern associated flap preferably should be applied in a range of about 3 to about 10 microns thick.
  • FIG. 1 is a perspective view of a cigarette embodying flaps in the wrapper thereof which are movable away from the wrapper encircling course during smoking to admit ventilation air streams to the tobacco cylinder, the flaps being held constrained by a heat and/or tobacco smoke softenable coating on the wrapper in accordance with the principles of the present invention until the cigarette has been smoke a predetermined distance.
  • FIG. 2A is an enlarged fragmentary sectional view through the tobacco cylinder of the cigarette shown in FIG. 1, the wrapper ventilation flaps being depicted in constrained closed position wherein they are held by the coating of normally rigid but heat and/or tobacco smoke softenable material.
  • FIG. 2B is the same as FIG. 2A except it shows the moved position of the ventilation flaps following softening of the materialf
  • FIG. 3 is a perspective view of a somewhat different
  • FIG. 4 is a plan view of the wrapper embodied in the cigarette shown in FIG. 3, the inner surface of the wrapper facing the viewer.
  • FIG. 5 is a graph illustrating the delivery profile of a cigarette of the type depicted in FIG. 1 as compared with a cigarette not provided with ventilation flaps.
  • FIGS. 6 and 7 are graphs illustrating the respective delivery profiles of FIG. 3 cigarettes in which the heat and/or tobacco smoke softenable material with which the wrappers were coated is a hot melt adhesive, and
  • the cigarette 10 depicted in FIG. 1 it includes a cylinder of tobacco l2 enclosed in a paper wrapper l4 and having a filter element 16 connected at the mouth end thereof in conventional manner.
  • the wrapper 14 encircles the tobacco cylinder 12 and is drawn tightly thereagainst and held in securement along overlapped longitudinal edges 115, 117 for holding the tobacco under radial constraint, which condition produces a circular tension in the wrapper.
  • the wrapper 14 is provided with an arrangement of slit patterns 18 which as can best be seen in FIGS.
  • the slit patterns can be formed in various arrangements in the wrapper depending upon the level of dilution desired as well as the point at which such dilution is to first occur.
  • the slit patterns should be arranged or fashioned in the wrapper to extend generally transversely of the longitudinal article to provide for movement of the associated flaps about a hinge line disposed generally parallel to said axis.
  • the circular tension in wrapper can be employed to bias the flap away from the wrapper encircling course when constraint on the same is released upon removal of the above-mentioned coating of material from the wrapper.
  • the slit pattern is fashioned in the form of an X and preferably where the X is of relatively greater dimension transversely of the greater the degree of ventilation provided.
  • the first slit pattern 18, and accordingly associated ventilation flaps 22, is located about 22 mm. from the lighting end of the cigarette with the remaining slit patterns being spaced longitudinally downstream therefrom on a centerline spacing of about 5 mm.
  • the distance between the last slit pattern 18 and the filter end of the tobacco cylinder is about 15 mm.
  • the wrapper is further provided with a coating 20 of a normally rigid material preferably disposed at the inner surface of the wrapper in covering and encircling expanse about each slit pattern 18 and flap 22 defined thereby.
  • the material is a type which becomes softened responsive to heat from the burning coal or smoke of the cigarette when smoked, or which is softened responsive to exposure to certain ingredients of tobacco smoke, e.g., moisture.
  • the material as seen in FIG. 2A normally maintains the flaps 22 in the encircling course of the wrapper and thereby prevents dilution of the cigarette until a predetermined point during the smoking of the same.
  • the action of the tobacco smoke and/or heat of the advancing coal will have softened the material coating 20 sufficiently to release the axis so that the circular tension in the wrapper will move the flap away from the wrapper encircling course to admit dilution air.
  • the manner in which the flaps 22 move following softening of the material 20 is depicted in FIG. 2B.
  • the present invention also provides as described earlier that the coating of air impervious normally rigid material can be on the outer surface of the wrapper.
  • the wrapper 134 is provided with a coating of material 144 on the outer wrapper surface 162, the slit pattern thus being disposed under the coating in the finished smoking article.
  • Materials suitable for use in the cigarette of the present invention include microcrystalline wax; Polyox" polyoxyethylene resins (Union Carbibe Corp.); blends of Penna. Industrial Chemical Co.s Piccotex petroleum hydrocarbon resins as follows: I00 with equal part refined paraffin wax (Gulf Oil Co.), LC with equal part P2X wax blend (Alexander Saunders & Co.); or any hot-melt adhesive resin of melting point from 130 to F., preferably light in color.
  • the coating as indicated is preferably applied to the inner side of the wrapper although it may advantageously be applied to the outer side of the same, with such coating being applied in any suitable manner.
  • the coating can be printed on with a conventional roller set or the printing can be combined with the slitting of the wrapper in a single operation in which the die that forms the slit patterns 18 has adjacent the die projection, a land formation which will print the coating of material simultaneously on the wrapper surface. In this manner the registration between the slits and the material coating will always be accurate and uniform. Further, the coating 20 holds the flaps 22 in the wrapper in proper positioning to insure that the flaps will not be affected by the circular tension produced in the wrapper when the latter is tightly wrapped around the cylinder of tobacco until the desired time at which the coating is softened to release the flaps constraint and allow such tension to bias the flaps outwardly of the wrapper encircling course.
  • the coating 20 of material applied to the wrapper can be applied to a thickness of about 3 to about mi- 5 and flaps defined by the slit patterns.
  • the coating can be applied as a relatively large contiguous layer which covers and encircles all of the slit patterns in the wrapper.
  • the cigarette 30 shown in FIG. 3 includes a tobacco cylinder 32 having a paper wrapper 34 enclosing a mass of tobacco as well as a filter element 36 at the mouth end.
  • the wrapper 34 as best seen in FIG. 4 is provided with an arrangement of slit patterns 40 which each define a corresponding arrangement of flaps 42, all of which are covered and encircled by a coating 44 of normally rigid but heat and/or tobacco smoke softenable material as described above.
  • the slit patterns are arranged, for example, to start at 15 mm. from the lighting end of the cigarette with the slit patterns being longitudinally spaced on 5 mm. centers with the slit patterns nearest the mouth end of the wrapper being approximately 10 mm. from that wrapper end.
  • a total of four longitudinally disposed rows are provided with the slit patterns in each row being in longitudinal side-by-side array with at least some of the slit patterns in other of said rows as shown in FIG. 4.
  • Example 1 A slow burning cigarette paper (as supplied by Sutliff Tobacco Company, Richmond, Virginia, for use with their RYO cigarette maker) was slit according to the pattern of FIG. 1. The inner side of the paper was then coated as shown with a very thin film of microcrystalline wax (150F. melt). These papers were used to make hand-made cigarettes from a commercial filler with the maker. Similar cigarettes were made as controls without slits or coating. Filters of cellulose acetate 45 tow, 20 mm., were attached to both sets of rods. The cigarettes were smoked by machine and puff-by-puff measurement of particulate delivery (TPM) was made. The comparative results shown in Table I below and in FIG. 5 show the leveling effect of the coated flaps.
  • TPM particulate delivery
  • Paper as used in the preceding example was slit in the pattern shown in FIG. 3 with slits 2 1% X 2 1% mm. approx. 5 mm. apart. The entire area of the slits was coated with about 3 microns of either high-melt adhesive type 34-3003 supplied by National Starch Co.
  • Cigarette Y Cigarette Y
  • Cigarette Z Polyox 3000 supplied by Union Carbide Corp.
  • Cigarettes were handmade with these wrappers, using a commercial filler, 1.0 g., and attaching a cellulose acetate filter, 3.4 denier/46000 total, 25 mm. long. When these cigarettes were smoked by machine for puff-by-puff analysis, they showed very level delivery profiles in both instances. Table II below and FIGS. 6 and 7 show the generally leveled profiles of Cigarettes Y and Z, respectively.
  • Cigarette Y Cigarette Z 1 1.40 1.30 2 0.75 1.47 3 0.93 1.39 4 1.04 1.62 5 1.23 1.62 6 1.14 1.51 7 1.07 1.82 8 1.28 1.89 9 1.13 1.85 10 1.36 1.90
  • the cigarette shown in FIG. 8 is substantially the same as that earlier described except the slit pattern 158 used in the wrapper 156 is in the shape of a V, extending transversely of the cigarette longitudinal axis.
  • the slit pattern 158 used in the wrapper 156 is in the shape of a V, extending transversely of the cigarette longitudinal axis.
  • each slit pattern defining a corresponding flap in said wrapper, said flap being radially movable inwardly and outwardly from the encircling wrapper responsive to puffing of said smoking article to admit dilution air flow to said cylinder of tobacco, each slit pattern being fashioned in said wrapper such as to extend generally transverse of the longitudinal axis of said article to provide for movement of the associated flap about a hinge line disposed generally parallel to said longitudinal axis;
  • said material being further characterized by being selected from materials softenably responsive to the presence of heat from the warm smoke and burning coal of said smoking article or moisture of tobacco smoke whereby the constraint on said flap is released and the circular tension in said wrapper causes said flap to move away from said encircling wrapper during the smoking of said smoking article.
  • each of the slit patterns is in the form of an X.
  • each of said slit patterns is of relatively greater dimension transversely of the article s longitudinal axis than in the direction of said axis.
  • said wrapper contains plural slit patterns extending in spaced array longitudinally of said wrapper on a centerline spacing of about 5 mm. between adjacent slit patterns.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Fluid Mechanics (AREA)
  • Measuring Volume Flow (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Elimination Of Static Electricity (AREA)
US00250064A 1972-05-08 1972-05-03 Cigarette with coated wrapper ventilation flaps Expired - Lifetime US3739785A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25006472A 1972-05-08 1972-05-08
US00250964A US3831445A (en) 1972-05-08 1972-05-08 Fluid velocity meter

Publications (1)

Publication Number Publication Date
US3739785A true US3739785A (en) 1973-06-19

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ID=26940569

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US00250064A Expired - Lifetime US3739785A (en) 1972-05-08 1972-05-03 Cigarette with coated wrapper ventilation flaps
US00250964A Expired - Lifetime US3831445A (en) 1964-02-20 1972-05-08 Fluid velocity meter

Family Applications After (1)

Application Number Title Priority Date Filing Date
US00250964A Expired - Lifetime US3831445A (en) 1964-02-20 1972-05-08 Fluid velocity meter

Country Status (7)

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US (2) US3739785A (sv)
JP (1) JPS4949660A (sv)
DE (1) DE2322882A1 (sv)
FR (1) FR2183935B1 (sv)
GB (1) GB1428987A (sv)
IT (1) IT984022B (sv)
SE (1) SE383927B (sv)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100059072A1 (en) * 2008-09-09 2010-03-11 Steve Woodson Ventilated smoking material perforation apparatus, method and product
US20100059075A1 (en) * 2008-09-09 2010-03-11 Steve Woodson Ventilated smoking material perforation apparatus and method
USD771865S1 (en) * 2013-03-26 2016-11-15 Kind Consumer Limited Wrap for nicotine inhaler

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2254013B1 (sv) * 1973-12-11 1978-02-24 Elf Aquitaine
GB1543041A (en) * 1975-02-12 1979-03-28 Lucas Electrical Ltd Corona discharge fluid flow transducers and fuel injection systems incorporating such transducers
GB1573102A (en) * 1976-01-13 1980-08-13 Lucas Industries Ltd Gas flow transducers and i.c. engine control systems incorporating such transducers
JPS5379572A (en) * 1976-12-23 1978-07-14 Nissan Motor Measuring apparatus for flow rate
JPS5829853B2 (ja) * 1977-05-02 1983-06-25 日産自動車株式会社 質量流量計測装置
US4331037A (en) * 1980-06-02 1982-05-25 Tsi Incorporated Fluid flow measuring apparatus
US4394825A (en) * 1980-06-02 1983-07-26 Tsi Incorporated Fluid flow measuring apparatus
US4387602A (en) * 1981-02-04 1983-06-14 The Bendix Corporation Pressure compensated circuit for ion mass airflow sensors
US4471654A (en) * 1981-09-25 1984-09-18 Tsi Incorporated Fluid flow measuring apparatus
EP0095000B1 (en) * 1982-05-25 1987-09-02 TSI Incorporated Fluid flow measuring apparatus
GB2511312B (en) * 2013-02-27 2020-05-20 Cummins Ltd Sensor apparatus and turbocharger

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754828A (en) * 1952-04-26 1956-07-17 Charles H Swain Cigarette and method of making the same
US2841153A (en) * 1955-06-16 1958-07-01 Louis G Pelletier Cigarettes
US3020915A (en) * 1958-09-22 1962-02-13 Achilles Corp Smoking device
US3054409A (en) * 1958-07-11 1962-09-18 Anthony P Miller Cigarette construction
CA696911A (en) * 1964-11-03 B. Boyer James Perforated cigarettes
US3395714A (en) * 1964-06-15 1968-08-06 Kahane Wilhelm Cigarette having plastic sheet lined wrapper
US3473535A (en) * 1968-10-07 1969-10-21 Eldon E Stahly Treatment of tobacco smoke to reduce metal carbonyl content thereof
US3511247A (en) * 1968-05-10 1970-05-12 Philip Morris Inc Smoking product and method of making the same
US3526904A (en) * 1968-05-10 1970-09-01 Philip Morris Inc Film covered,apertured cigarette wrapper
DE1914963A1 (de) * 1969-03-24 1970-10-08 Steigerwald Dipl Phys Karl Hei Verfahren und Vorrichtung zum Abrauchen eines Strangs aus rauchbarem Material

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470741A (en) * 1968-04-30 1969-10-07 Enoch J Durbin Mass flow meter apparatus
US3648517A (en) * 1970-11-25 1972-03-14 Thermo Systems Inc Control apparatus for mass flow meter
FR2119871B1 (sv) * 1970-12-30 1973-11-23 Anvar

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA696911A (en) * 1964-11-03 B. Boyer James Perforated cigarettes
US2754828A (en) * 1952-04-26 1956-07-17 Charles H Swain Cigarette and method of making the same
US2841153A (en) * 1955-06-16 1958-07-01 Louis G Pelletier Cigarettes
US3054409A (en) * 1958-07-11 1962-09-18 Anthony P Miller Cigarette construction
US3020915A (en) * 1958-09-22 1962-02-13 Achilles Corp Smoking device
US3395714A (en) * 1964-06-15 1968-08-06 Kahane Wilhelm Cigarette having plastic sheet lined wrapper
US3511247A (en) * 1968-05-10 1970-05-12 Philip Morris Inc Smoking product and method of making the same
US3526904A (en) * 1968-05-10 1970-09-01 Philip Morris Inc Film covered,apertured cigarette wrapper
US3473535A (en) * 1968-10-07 1969-10-21 Eldon E Stahly Treatment of tobacco smoke to reduce metal carbonyl content thereof
DE1914963A1 (de) * 1969-03-24 1970-10-08 Steigerwald Dipl Phys Karl Hei Verfahren und Vorrichtung zum Abrauchen eines Strangs aus rauchbarem Material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100059072A1 (en) * 2008-09-09 2010-03-11 Steve Woodson Ventilated smoking material perforation apparatus, method and product
US20100059075A1 (en) * 2008-09-09 2010-03-11 Steve Woodson Ventilated smoking material perforation apparatus and method
USD771865S1 (en) * 2013-03-26 2016-11-15 Kind Consumer Limited Wrap for nicotine inhaler

Also Published As

Publication number Publication date
US3831445A (en) 1974-08-27
FR2183935A1 (sv) 1973-12-21
FR2183935B1 (sv) 1977-04-29
JPS4949660A (sv) 1974-05-14
IT984022B (it) 1974-11-20
SE383927B (sv) 1976-04-05
GB1428987A (en) 1976-03-24
DE2322882A1 (de) 1973-11-22

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