US3699972A - Cigarette - Google Patents

Cigarette Download PDF

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Publication number
US3699972A
US3699972A US68163A US3699972DA US3699972A US 3699972 A US3699972 A US 3699972A US 68163 A US68163 A US 68163A US 3699972D A US3699972D A US 3699972DA US 3699972 A US3699972 A US 3699972A
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US
United States
Prior art keywords
cigarette
wrapper
accordance
area
burn
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
Application number
US68163A
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English (en)
Inventor
Andrew Ferdinand Frisch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brown and Williamson Holdings Inc
Original Assignee
Brown and Williamson Tobacco Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Brown and Williamson Tobacco Corp filed Critical Brown and Williamson Tobacco Corp
Application granted granted Critical
Publication of US3699972A publication Critical patent/US3699972A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • A24D1/02—Cigars; Cigarettes with special covers

Definitions

  • the burn accelerating agent causes the treated area of the 2% g 131/15 wrapper to burn more rapidly than the-untreated surd 15 B 15R rounding area so that an increased flow of air is 0 re 1321/10 A caused to enter through the rapid burn area ahead of the burning coal during smoking.
  • the air entering through the rapid burn area in combination with the [56] References Cited air entering through the aperture, dilutes the smoke UNITED STATES PATENTS stream and substantially reduces the delivery of smoke constituents.
  • the provision of a slit through the 'ggg g I? at "131/15 treated area provides for a constant flow.
  • ATTORNEYS This invention relates to an improved cigarette having means for reducing the delivery of smoke constituents.
  • An object of this invention therefore is to provide an improved cigarette which substantially reduces the delivery of tar and other smoke produc i 1
  • FIG. 1 is a side: elevation viewof a cigarette treated with a burn accelerating agent applied to the wrapper over triangular-shaped, perforated areas;
  • FIG. 2 is a side elevation view of a cigarette treated with a burn accelerating agentapplied to the wrapper as a perforated strip;
  • FIG. 3 is a close-up view of the perforations and treated area of FIG. 2;
  • FIG. 4 is a fragmentary sectional the line 4.4 of FIG. 3;
  • FIG. 5 is a side elevation view of a cigarette treated with a burn accelerating agent applied as a strip which is provided-with a series of slits extending longitudinally along the cigarette from the mouthpiece;
  • FIG. 6 is a vertical sectional view taken alongthe line 6-6 of FIG. 5;
  • FIG. 7 is a side elevation view of a cigarettetreated view taken along 'with a burn accelerating agent applied to the wrapper Over triangular-shaped, perforated areas, the areas extending about one-third the length of the cigarette from the mouthpiece.
  • a burn accelerating agent is applied to preselected areas of a cigarette wrapper to accelerate the burn rate of the wrapper.
  • These treated areas are provided with an aperture which extends through th coating or agent residue on the surface and the wrapper.
  • FIG. 1 shows cigarette 10 having mouthpiece l1 and a burn rate accelerating agent applied to wrapper 20 in a plurality of triangular-shaped treated areas 12, 13 and an influx of air into the tobacco smoke stream at a point ahead of the burning coal.
  • the treated areas get progressively larger toward mouthpiece end 11 of cigarette 10 due to the triangular pattern to permit a larger volume of air to enter the smoke stream as the cigarettejis smoked closer to mouthpiece end 11.
  • the dilution .effect substantially reduces the tar delivery which increases considerably as the cigarette is smoked.
  • Perforations 15 extend through the residue or coating of the burn agent of area 13 and wrapper 20 to the tobacco beneath. The combined effect therefore is to have air dilution in the smoke stream coming from the perforations l5 and the accelerated burn area 13 of wrapper 20.
  • FIG. 2 shows cigarette 10 provided with a treated area or strip of burn promoting agent 16 applied to wrapper 20 and extending from mouthpiece end 11 toward the end to be lighted 25. Since the air dilution effect on the tar and other products in the smoke is minimized close to cigarette end 25, strip 16 extends to a point somewhat-short of end 25. Treated area 16 is provided with perforations 17 to allow air intake.
  • FIG. 1 shows cigarette 10 provided with a treated area or strip of burn promoting agent 16 applied to wrapper 20 and extending from mouthpiece end 11 toward the end to be lighted 25. Since the air dilution effect on the tar and other products in the smoke is minimized close to cigarette end 25, strip 16 extends to a point somewhat-short of end 25. Treated area 16 is provided with perforations 17 to allow air intake.
  • FIG. 1 shows cigarette 10 provided with a treated area or strip of burn promoting agent 16 applied to wrapper 20 and extending from mouthpiece end 11 toward the end to be lighted 25. Since the air
  • FIG. 4 shows perforation 17 extending completely through treated area 16 and wrapper 20 to expose tobacco 18 beneath. It should be noted that treated area 16 is shown in FIG. 4 as a separate layer.
  • the burn promoting agent may be absorbed by wrapper 20 and leave no residue, coating or layer as shown in FIG. 4.
  • the perforations shown in FIGS. 1 through 4 should be at least 0.5 millimeters in diameter.
  • FIG. 5 shows an additional embodiment of this invention in which a treated area 21 extends longitudinally along the cigarette from mouthpiece end 11 toward end 25.
  • Cigarette 10 is provided with a plurality of slits 22 extending longitudinally along wrapper 20. As the burning coal progressively reaches each of slits 22, the area surrounding the slit is opened to admit additional air. Slits 22 extend through treated area 21 and wrapper 20 to permit an influx of air for use in conjunction with the air admitted through the lighted end of the cigarette to dilute the tobacco smoke stream.
  • the treated area burns at an accelerated rate when the burning coal reaches it, aided by the additional air adtions, the potassium nitrate is removed from the apertur'e by burning to permit air to enter through the perforations. All cigarettes in the Examples were smoked on a constant vacuum smoking machine at one puff per wrapper.
  • Example C was perforated and then treated with potassium nitrate so that a residue or coating of potassium nitrate covered the perforations.
  • FIG. 6 is a verminute to a point 3 millimeters from the tip.
  • Each puff tical sectional view schematically showing treated area was of 2 seconds duration and was 35 milliliters in 21 and slit 22 (exaggerated somewhat) extending vol m through area 21 and wrapper 20 to tobacco I 18 TABLE] beneath.
  • FIG. 7 shows a cigarette 107 having the 10 F 1 Per Cigar- Delivery Nicotine same essential construction as the cigarette 10 of FIG. ette (mg) Per cig-. Ratio 1. The difference lies in the fact that the treatment and perforations areas extend over about one-third the (mg) length of the cigarette from the mouthpiece in FIG. 7. Prime numerals of the identifying numerals of FIG. 1 l ififg fi are employed to denote corresponding parts. perfo rations
  • the agent for accelerating the burn rate of the $233 wrapper is preferably potassium nitrate (KNO coating and Treated area 16 of FIG.
  • cigarette 2 can be formed by applying to 3:353 the cigarette wrapper an aqueous solution of potassium A untreated 22.6 ,i .63 13.9 nitrate of about 30 percent by weight to form a strip Prfmaed about 4 millimeters in width.
  • the water from the solu- 2s tion is then evaporated to leave a thin residue or coat- C perforflmdand ing of potassium nitrate on the cigarette wrapper.
  • the lZ Z wl .l i -o. treated area is then pierced to form an aperture (e.g. a 9 s extendslit, perforation or the like) which extends through the treated area and wrapper to the tobacco beneath.
  • cigarette Other burn accelerating agents can also be employed.
  • Example 1 Although the cigarette depicted in the drawings is of the filter type, this invention is also applicable to non- As 9 thus seen from Table Example 1 had filter type cigarettes.
  • Example 1 shows a cigarette in Example 1 treated as arette havmg a Smp of po-tassmm tut-rate Coatmg but without apertures of any kind extending through the m a manner slmllar to that of 2 wlth Potasslum coating or cigarette wrapper.
  • Example F is a cigarette TABLE I1 Micrograms/cigarette Nicotine Phenol Total Nitrogen, Acetal- Ex. Treatment delivery Tar delivery cyanide oxides dehyde 2 Coated with KNO3, with slits extending through coating and wrapper to 0. 79 8. 3 23 161 340 uiliieiii lff j .Q 1.40 20.0 01 208 305 800 Coated wlth KNO: 1.25 10.4 40 251 322 340 Slit but untreated 1. 04 12.0 31 122 184 424 G. Slit and coated with KNO; with coating extending over slits in cigarette 1. 01 11.
  • Example 7 32 98 205 435 having a plurality of slits extending from the mouthpiece to the end to be lighted but having no burn promoting coating.
  • Example Gis a cigarette having a plurality of slits which was first slit and then treated with potassium nitrate so that a potassium nitrate coating covered the slits.
  • Example G as the burning coal advances, the potassium nitrate coating is burned from the slit to permit air intake through the slits.
  • Example III shows the percentage decrease in delivery of smoke constituents including particulate matter, nicotine, tar, phenol, cyanide, nitrogen oxides, and acetaldehyde between Example I and Example B.
  • Example 2 is compared with Example F having slits but without potassium nitrate.
  • the reduction of all smoke constituents listed in Table III is substantial.
  • Example 1 of this invention reduces the tar delivery by 53 percent when compared to an untreated perforated cigarette while Example 2 reduces the tar delivery by 31 percent, the phenol by 38 percent and the cyanide by 43 percent. The overall reduction therefore of smoke constituents is substantial.
  • Table IV shows the percentage decrease in the delivery of smoke constituents and compares Example 1 with Example C and Example 2 with Example G.
  • TPM means total particulate matter.
  • a process of treating a cigarette to reduce the delivery of smoke constituents including the steps of applying potassium nitrate to preselected areas of the cigarette wrapper, and thereafter aperturing the

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
US68163A 1970-08-31 1970-08-31 Cigarette Expired - Lifetime US3699972A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6816370A 1970-08-31 1970-08-31

Publications (1)

Publication Number Publication Date
US3699972A true US3699972A (en) 1972-10-24

Family

ID=22080809

Family Applications (1)

Application Number Title Priority Date Filing Date
US68163A Expired - Lifetime US3699972A (en) 1970-08-31 1970-08-31 Cigarette

Country Status (11)

Country Link
US (1) US3699972A (fi)
BE (1) BE770182R (fi)
BR (1) BR7105702D0 (fi)
CA (1) CA929437A (fi)
CH (1) CH559521A5 (fi)
DE (1) DE2136084C2 (fi)
DK (1) DK125726B (fi)
FI (1) FI51650C (fi)
GB (1) GB1306054A (fi)
NL (1) NL159870C (fi)
ZA (1) ZA714796B (fi)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818335A (en) * 1972-04-17 1974-06-18 Brown & Williamson Tobacco System and method for detecting amounts of conductive material on a moving web
US4941485A (en) * 1989-04-18 1990-07-17 R. J. Reynolds Tobacco Company Cigarette
EP0443749A2 (en) * 1990-02-23 1991-08-28 Rothmans International Services Limited Cigarette or cigar
US5220930A (en) * 1992-02-26 1993-06-22 R. J. Reynolds Tobacco Company Cigarette with wrapper having additive package
US20030089377A1 (en) * 2001-11-15 2003-05-15 Mohammad Hajaligol Cigarette paper having heat-degradable filler particles, and cigarette comprising a cigarette paper wrapper having heat-degradable filler particles
US20040261805A1 (en) * 2002-04-30 2004-12-30 Brown & Williamson Tobacco Corporation Smoking article
US20050039767A1 (en) * 2002-11-19 2005-02-24 John-Paul Mua Reconstituted tobacco sheet and smoking article therefrom
US20050056294A1 (en) * 2002-11-19 2005-03-17 Wanna Joseph T. Modified reconstituted tobacco sheet
US20070157940A1 (en) * 2006-01-06 2007-07-12 R. J. Reynolds Tobacco Company Smoking articles comprising inner wrapping strips
US20080173320A1 (en) * 2007-01-19 2008-07-24 R. J. Reynolds Tobacco Company Filtered Smoking Articles
US11930839B1 (en) 2023-02-07 2024-03-19 Dimitry Boss Cigarette loading machines and method therefore

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1983530A (en) * 1932-04-25 1934-12-11 Du Pont Cellophane Co Inc Tissue for cigarettes
US2269995A (en) * 1940-04-26 1942-01-13 Trane Raymond Smoking article
US2992647A (en) * 1958-11-05 1961-07-18 Frank H J Figge Thermostatically controlled cigarette and method of making the same

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818335A (en) * 1972-04-17 1974-06-18 Brown & Williamson Tobacco System and method for detecting amounts of conductive material on a moving web
US4941485A (en) * 1989-04-18 1990-07-17 R. J. Reynolds Tobacco Company Cigarette
EP0443749A2 (en) * 1990-02-23 1991-08-28 Rothmans International Services Limited Cigarette or cigar
EP0443749A3 (en) * 1990-02-23 1993-06-09 Rothmans International Services Limited Cigarette or cigar
US5220930A (en) * 1992-02-26 1993-06-22 R. J. Reynolds Tobacco Company Cigarette with wrapper having additive package
US6817365B2 (en) 2001-11-15 2004-11-16 Philip Morris Usa Inc. Cigarette paper having heat-degradable filler particles, and cigarette comprising a cigarette paper wrapper having heat-degradable filler particles
US20030089377A1 (en) * 2001-11-15 2003-05-15 Mohammad Hajaligol Cigarette paper having heat-degradable filler particles, and cigarette comprising a cigarette paper wrapper having heat-degradable filler particles
US20040261805A1 (en) * 2002-04-30 2004-12-30 Brown & Williamson Tobacco Corporation Smoking article
US20050039767A1 (en) * 2002-11-19 2005-02-24 John-Paul Mua Reconstituted tobacco sheet and smoking article therefrom
US20050056294A1 (en) * 2002-11-19 2005-03-17 Wanna Joseph T. Modified reconstituted tobacco sheet
US8136533B2 (en) 2002-11-19 2012-03-20 R.J. Reynolds Tobacco Company Reconstituted tobacco sheet and smoking article therefrom
US20070157940A1 (en) * 2006-01-06 2007-07-12 R. J. Reynolds Tobacco Company Smoking articles comprising inner wrapping strips
US20080173320A1 (en) * 2007-01-19 2008-07-24 R. J. Reynolds Tobacco Company Filtered Smoking Articles
US11930839B1 (en) 2023-02-07 2024-03-19 Dimitry Boss Cigarette loading machines and method therefore

Also Published As

Publication number Publication date
DK125726B (da) 1973-04-30
CA929437A (en) 1973-07-03
GB1306054A (fi) 1973-02-07
AU3132871A (en) 1973-01-18
FI51650B (fi) 1976-11-30
CH559521A5 (fi) 1975-03-14
DE2136084A1 (de) 1972-03-09
FI51650C (fi) 1977-03-10
NL159870C (nl) 1979-09-17
BR7105702D0 (pt) 1973-05-24
BE770182R (fr) 1972-01-19
NL7109754A (fi) 1972-03-02
NL159870B (nl) 1979-04-17
ZA714796B (en) 1972-04-26
DE2136084C2 (de) 1984-04-12

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