US3608563A - Cigarette filter - Google Patents

Cigarette filter Download PDF

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Publication number
US3608563A
US3608563A US797135A US3608563DA US3608563A US 3608563 A US3608563 A US 3608563A US 797135 A US797135 A US 797135A US 3608563D A US3608563D A US 3608563DA US 3608563 A US3608563 A US 3608563A
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US
United States
Prior art keywords
particles
filter
diatomaceous earth
microns
size
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
US797135A
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English (en)
Inventor
John B Schmitz
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Individual
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Individual
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Filing date
Publication date
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Publication of US3608563A publication Critical patent/US3608563A/en
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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
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
    • A24D3/166—Silicic acid or silicates

Definitions

  • SCHM/TZ Arrow/6V CIGARETTE FILTER 1 his invention relates to a cigarette filter and primarily to a filter material which will collect undesirable particulate matter, said particulate matter in this disclosure referring to tars and nicotine in condensed form and any other undesirable products of combustion in smoking tobacco.
  • My improved filter material can conveniently be used in conjunction with conventional cellulose fiber filter material, such as is presently used. However, it has considerably greater efficiency than the fibrous material and I use the latter primarily for retaining my improved filter material and also for giving body to the mouthpiece of the cigarette.
  • a highly efficient economical tasteless filter material is diatomaceous earth carefully screened to provide relatively uniform particle size withina range which will collect the above mentioned particulate matter directly or by condensation and yet which will not interfere with the comfortable drawing of smoke through the cigarette by the user.
  • the object of the present invention therefore is to provided a cigarette filter comprising diatomaceous earth suitably confined of course in a tubular filter structure which will entrap or collect a far greater percentage of particulate matter than presently known filter structures and materials, while at the same time maintaining ease of flow of the smoke through the cigarette and the filter.
  • FIG. 1 is an exploded view of an embodiment of the invention
  • FIG. 2 is an enlarged sectional detail of a portion of a cigarette and the filter.
  • a cigarette 4 including a tubular paper 6 containing shredded tobacco 8.
  • a filter wrapper or tube 10 which may be secured to the paper 6 by adhesive at 12.
  • the filter tube 10 contains therein spaced plugs 14 and 16 which may conveniently be of a conventional cellulose fiber cigarette filter material.
  • the filter plugs 14 and 16 Between the filter plugs 14 and 16 is a quantity of granules or particles 18 of diatomaceous earth. While the fibrous filter plugs 14 and 16 do to some degree absorb or adsorb particulate matter from the smoke of the cigarette, l have found through actual and extensive tests that diatomaceous earth in the condition determined by me is much more efficient than the cellulose fiber filter material. However, I' utilize plugs of the cellulose fiber at 14 and 16 as convenient means for confining the diatomaceous earth particles 18 in the filter structure.
  • Flux-calcined diatomaceous earth is obtained by calcination of the diatomaceous earth in the presence of a flux, generally soda ash, although sodium chloride may also be employed, as set forth in Kirk-Othmer, 1965 edition, Vol. 7, page 60, on Diatomite.
  • a flux generally soda ash, although sodium chloride may also be employed, as set forth in Kirk-Othmer, 1965 edition, Vol. 7, page 60, on Diatomite.
  • diatomaceous earth particles are most efficient and comfortable to use where the particle sizes range from I00 to 425 microns, or, approximately in that range where the particle sizes do not vary more than one to four except of course for insignificant in cidental amounts of dust which is present to such a minor degree that it has no effect in the function of the filter.
  • a filter for cigarettes and the like wherein the improvement comprises: a filtering section having a cross-sectional area conforming to that of the tobacco smoke passage with which it is to be used and including a number of confined discrete flux calcined diatomaceous earth particles, the sizes of which are uniform to the extent that the smaller particles,

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Filtering Materials (AREA)
US797135A 1969-02-06 1969-02-06 Cigarette filter Expired - Lifetime US3608563A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79713569A 1969-02-06 1969-02-06

Publications (1)

Publication Number Publication Date
US3608563A true US3608563A (en) 1971-09-28

Family

ID=25170006

Family Applications (1)

Application Number Title Priority Date Filing Date
US797135A Expired - Lifetime US3608563A (en) 1969-02-06 1969-02-06 Cigarette filter

Country Status (12)

Country Link
US (1) US3608563A (de)
JP (1) JPS486559B1 (de)
AT (1) AT298314B (de)
BE (1) BE745562A (de)
BR (1) BR7016489D0 (de)
CH (1) CH512891A (de)
DE (1) DE2004598A1 (de)
ES (1) ES375862A1 (de)
FR (1) FR2031211A5 (de)
GB (1) GB1300095A (de)
IT (1) IT1037014B (de)
NL (1) NL7001757A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4201234A (en) * 1977-02-21 1980-05-06 Sasmoco, S.A. Filter for smoking article, mainly cigarette
US5191905A (en) * 1990-03-16 1993-03-09 Costarica Sogo Kaihatsu Co., Ltd. Filter cigarette having filter containing absorptive synthetic graft polymer fibers produced from irradiated polyethylene reacted with vapor phase styrene or absorptive synthetic magnetic fibers
WO2000015057A1 (en) * 1998-09-17 2000-03-23 Hou Wei Hsin Cigarette filter made from surface activated particulate particles
US6591839B2 (en) 1999-02-17 2003-07-15 Dieter Meyer Filter material for reducing harmful substances in tobacco smoke
WO2004004890A1 (en) * 2002-07-08 2004-01-15 Irakli Grishashvili Method of production of a diatomite ultrafiltering material and cigarette membrane filter comprising it
WO2025010772A1 (zh) * 2023-07-10 2025-01-16 云南中烟工业有限责任公司 一种改性硅藻土、其制备方法及应用

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000051452A1 (en) * 1999-03-01 2000-09-08 Akira Yano Smoking utensil

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1462480A (en) * 1920-09-17 1923-07-24 Frederick J Bosse Smoking mixture
US2108860A (en) * 1934-11-12 1938-02-22 Paul Bechtner Method of and substance for treating tobacco smoke
GB1008092A (en) * 1964-01-21 1965-10-27 British American Tobacco Co Improvements relating to cigarette filters
US3428054A (en) * 1965-10-18 1969-02-18 Chemway Filters Inc Filter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1462480A (en) * 1920-09-17 1923-07-24 Frederick J Bosse Smoking mixture
US2108860A (en) * 1934-11-12 1938-02-22 Paul Bechtner Method of and substance for treating tobacco smoke
GB1008092A (en) * 1964-01-21 1965-10-27 British American Tobacco Co Improvements relating to cigarette filters
US3428054A (en) * 1965-10-18 1969-02-18 Chemway Filters Inc Filter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Condensed Chemical Dictionary, Sixth Edition. Reinhold Publishing Corporation, New York. 1962, page 233 cited. *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4201234A (en) * 1977-02-21 1980-05-06 Sasmoco, S.A. Filter for smoking article, mainly cigarette
US5191905A (en) * 1990-03-16 1993-03-09 Costarica Sogo Kaihatsu Co., Ltd. Filter cigarette having filter containing absorptive synthetic graft polymer fibers produced from irradiated polyethylene reacted with vapor phase styrene or absorptive synthetic magnetic fibers
WO2000015057A1 (en) * 1998-09-17 2000-03-23 Hou Wei Hsin Cigarette filter made from surface activated particulate particles
US6591839B2 (en) 1999-02-17 2003-07-15 Dieter Meyer Filter material for reducing harmful substances in tobacco smoke
WO2004004890A1 (en) * 2002-07-08 2004-01-15 Irakli Grishashvili Method of production of a diatomite ultrafiltering material and cigarette membrane filter comprising it
WO2025010772A1 (zh) * 2023-07-10 2025-01-16 云南中烟工业有限责任公司 一种改性硅藻土、其制备方法及应用

Also Published As

Publication number Publication date
NL7001757A (de) 1970-08-10
DE2004598A1 (de) 1970-08-27
CH512891A (de) 1971-09-30
GB1300095A (en) 1972-12-20
FR2031211A5 (de) 1970-11-13
ES375862A1 (es) 1973-01-01
JPS486559B1 (de) 1973-02-27
BE745562A (fr) 1970-08-05
IT1037014B (it) 1979-11-10
BR7016489D0 (pt) 1973-01-02
AT298314B (de) 1972-05-10

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