US3417758A - Filter elements and additives therefor - Google Patents

Filter elements and additives therefor Download PDF

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Publication number
US3417758A
US3417758A US425920A US42592065A US3417758A US 3417758 A US3417758 A US 3417758A US 425920 A US425920 A US 425920A US 42592065 A US42592065 A US 42592065A US 3417758 A US3417758 A US 3417758A
Authority
US
United States
Prior art keywords
tow
filter
filter elements
hydrogen cyanide
tobacco smoke
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
US425920A
Other languages
English (en)
Inventor
Cephas H Sloan
Bobby J Sublett
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to US425920A priority Critical patent/US3417758A/en
Priority to US462050A priority patent/US3403689A/en
Priority claimed from US476660A external-priority patent/US3397705A/en
Priority to BE674968D priority patent/BE674968A/xx
Priority to FR45597A priority patent/FR1465842A/fr
Priority to GB1803/66A priority patent/GB1085582A/en
Priority to ES0321774A priority patent/ES321774A1/es
Application granted granted Critical
Publication of US3417758A publication Critical patent/US3417758A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/66—Salts, e.g. alums
    • 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

Definitions

  • This invention relates to filters that will remove hydrogen cyanide from smoke. More particularly it relates to filter elements containing additives which will effectively neutralize the hydrogen cyanide normally encountered in tobacco smoke.
  • One object of this invention is to provide a filter element that will remove a considerable amount of hydrogen cyanide from the vapor portion of tobacco smoke. Another object is to provide a method of increasing the filtration efficiency of tobacco smoke filter elements. Further objects will appear hereinafter.
  • our invention involves applying to a filter tow such as acetate tow a water-soluble inorganic salt of a Group Ia element.
  • Preferred salts are the carbonates, and phosphites of sodium and potassium.
  • the salts are preferably finely divided. The preferred particle size is such that the particles will pass through a 100-mesh screen (U.S. S. Sieve).
  • the water-soluble inorganic salt may be applied by sifting, dusting, shaking, or from a water solution or plasticizer dispersion. It may also be applied by spraying or rolling on the tow. More than one salt may be used as a mixture if desired.
  • a preferred tow on which the additives of this invention may be used is crimped continuous filament cellulose acetate tow, preferably of a denier per filament of about 1.6 to 10.
  • the water-soluble inorganic salt may be applied to the tow in the amount of from 1 to 30% by weight, the preferred amount being 2 to by weight of the filter element prepared from the tow to which additive is applied.
  • the crimped tow is spread out to a width of 10-20 inches or so and a plasticizer for the tow, containing 10 to 50% by weight of the water-soluble inorganic salt dispersed therein, applied by padding the tow with rollers.
  • the tow is then compacted, wrapped with paper to form a rod, and allowed to stand until firm.
  • Addition of the plasticizer dispersion helps add rigidity to the resulting rod and leaves the salt evenly distributed on the surface of the tow. After the rod becomes firm, it may be cut into any desired length and used either alone as a filter or in combination with other filters to make a dual or multiple filter.
  • Example I A 170-mm. portion of 3 denier/ filament crimped cellulose acetate filter tow which had 20,000 filaments and Weighed approximately 1 gram was spread out to a width of 15 inches. A blend of 30 parts diethylene glycol, 60 parts triacetin, and 20 parts sodium carbonate (ZOO-meshv powder) was padded on the opened tow until mg. of the total mixture was added. The tow was then recompacted and wrapped with a paper tape to form a filter rod with a circumference of 25 mm. The rod was allowed to stand until firm and was then cut into 17-min. segments which contained approximately 2 mg. of sodium carbonate. The 17-min.
  • a selective tobacco smoke filter element comprising a plurality of cellulose ester fibers and containing from 1 to 30% by weight of said element of a water soluble, weak base inorganic salt capable of chemically reacting with and selectively rendering harmless hydrogen cyanide vapors contained in the tobacco smoke passing through the filter element, the water soluble inorganic salt being selected from the group consisting of sodium phosphite and potassium phosphite.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Paper (AREA)
US425920A 1965-01-15 1965-01-15 Filter elements and additives therefor Expired - Lifetime US3417758A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US425920A US3417758A (en) 1965-01-15 1965-01-15 Filter elements and additives therefor
US462050A US3403689A (en) 1965-01-15 1965-06-07 Paper filter of selective removal of a cigarette smoke vapor
BE674968D BE674968A (enrdf_load_html_response) 1965-01-15 1966-01-11
FR45597A FR1465842A (fr) 1965-01-15 1966-01-12 Filtres à fumée de tabac retenant l'acide cyanhydrique
GB1803/66A GB1085582A (en) 1965-01-15 1966-01-14 Tobacco smoke filters and materials therefor
ES0321774A ES321774A1 (es) 1965-01-15 1966-01-14 Mejoras introducidas en la fabricacion de un producto fibroso,para filtros de cigarrillos.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US425920A US3417758A (en) 1965-01-15 1965-01-15 Filter elements and additives therefor
US462050A US3403689A (en) 1965-01-15 1965-06-07 Paper filter of selective removal of a cigarette smoke vapor
US476660A US3397705A (en) 1965-08-02 1965-08-02 Filter elements and additive containing material therefor

Publications (1)

Publication Number Publication Date
US3417758A true US3417758A (en) 1968-12-24

Family

ID=27411494

Family Applications (2)

Application Number Title Priority Date Filing Date
US425920A Expired - Lifetime US3417758A (en) 1965-01-15 1965-01-15 Filter elements and additives therefor
US462050A Expired - Lifetime US3403689A (en) 1965-01-15 1965-06-07 Paper filter of selective removal of a cigarette smoke vapor

Family Applications After (1)

Application Number Title Priority Date Filing Date
US462050A Expired - Lifetime US3403689A (en) 1965-01-15 1965-06-07 Paper filter of selective removal of a cigarette smoke vapor

Country Status (5)

Country Link
US (2) US3417758A (enrdf_load_html_response)
BE (1) BE674968A (enrdf_load_html_response)
ES (1) ES321774A1 (enrdf_load_html_response)
FR (1) FR1465842A (enrdf_load_html_response)
GB (1) GB1085582A (enrdf_load_html_response)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990003125A1 (en) * 1988-09-28 1990-04-05 Eastman Kodak Company Tobacco smoke filters and process for production thereof
US5150723A (en) * 1988-09-28 1992-09-29 Eastman Kodak Company Process for the production of tobacco smoke filters
US5911224A (en) * 1997-05-01 1999-06-15 Filtrona International Limited Biodegradable polyvinyl alcohol tobacco smoke filters, tobacco smoke products incorporating such filters, and methods and apparatus for making same
US20070056600A1 (en) * 2005-09-14 2007-03-15 R. J. Reynolds Tobacco Company Filtered smoking article
CN105642240A (zh) * 2014-11-10 2016-06-08 南通醋酸纤维有限公司 一种多孔二醋酸纤维素吸附剂及其制备方法和应用

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4763674A (en) * 1986-04-16 1988-08-16 Hercules Incorporated Method and device for controlling hydrogen cyanide and nitric oxide concentrations in cigarette smoke
US5141006A (en) * 1990-02-28 1992-08-25 Eastman Kodak Company Tobacco smoke filter material and process for production thereof
US5150721A (en) * 1990-02-28 1992-09-29 Lee Benedict M Tobacco smoke filter material and process for production thereof
US9491971B2 (en) * 2005-12-13 2016-11-15 Philip Morris Usa Inc. Specifically-defined smoking article with activated carbon sorbent and sodium bicarbonate-treated fibers and method of treating mainstream smoke
ITVA20060056A1 (it) * 2006-09-06 2008-03-07 Giuseppe Elia Filtro per togliere le sostanze nocive dal fumo del tabacco
CN111557467B (zh) * 2020-05-13 2021-12-07 四川中烟工业有限责任公司 一种青色雪茄茄衣烟叶的制备方法
CN112523003A (zh) * 2020-12-03 2021-03-19 中国制浆造纸研究院有限公司 一种卷烟滤棒用硬沟槽纸的制备方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT86246B (de) * 1919-02-20 1921-11-10 Ella Schlesinger Verfahren zur Herstellung von Rauchpatronen.
US2172946A (en) * 1935-09-04 1939-09-12 Roser B Sutter Tobacco smoke purifier
GB760772A (en) * 1954-12-28 1956-11-07 Frank Fessler Improvements in cigarettes and cigars
US2832351A (en) * 1950-06-26 1958-04-29 Verdurin Company Method of treating tobacco smoke
GB908185A (en) * 1959-01-06 1962-10-17 Lorillard Co P Improvements in or relating to tobacco smoke filters
US3101723A (en) * 1960-11-15 1963-08-27 Philip Morris Inc Fibrous cigarette filter
US3320961A (en) * 1963-07-22 1967-05-23 Brown & Williamson Tobacco Corp Cigarette filters
US3368566A (en) * 1964-06-17 1968-02-13 Souren Z. Avediklan Filter cigarette

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768913A (en) * 1954-10-22 1956-10-30 Ohio Commw Eng Co Cigarette filter tips from dextran
US3019764A (en) * 1958-03-06 1962-02-06 Schilling Electric Company Milk releaser with timer control

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT86246B (de) * 1919-02-20 1921-11-10 Ella Schlesinger Verfahren zur Herstellung von Rauchpatronen.
US2172946A (en) * 1935-09-04 1939-09-12 Roser B Sutter Tobacco smoke purifier
US2832351A (en) * 1950-06-26 1958-04-29 Verdurin Company Method of treating tobacco smoke
GB760772A (en) * 1954-12-28 1956-11-07 Frank Fessler Improvements in cigarettes and cigars
GB908185A (en) * 1959-01-06 1962-10-17 Lorillard Co P Improvements in or relating to tobacco smoke filters
US3101723A (en) * 1960-11-15 1963-08-27 Philip Morris Inc Fibrous cigarette filter
US3320961A (en) * 1963-07-22 1967-05-23 Brown & Williamson Tobacco Corp Cigarette filters
US3368566A (en) * 1964-06-17 1968-02-13 Souren Z. Avediklan Filter cigarette

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990003125A1 (en) * 1988-09-28 1990-04-05 Eastman Kodak Company Tobacco smoke filters and process for production thereof
EP0363288A1 (en) * 1988-09-28 1990-04-11 EASTMAN KODAK COMPANY (a New Jersey corporation) Tobacco smoke filters and process for production thereof
US4964426A (en) * 1988-09-28 1990-10-23 Eastman Kodak Company Tobacco smoke filters and process for production thereof
US5150723A (en) * 1988-09-28 1992-09-29 Eastman Kodak Company Process for the production of tobacco smoke filters
US5911224A (en) * 1997-05-01 1999-06-15 Filtrona International Limited Biodegradable polyvinyl alcohol tobacco smoke filters, tobacco smoke products incorporating such filters, and methods and apparatus for making same
US20070056600A1 (en) * 2005-09-14 2007-03-15 R. J. Reynolds Tobacco Company Filtered smoking article
WO2007033272A1 (en) * 2005-09-14 2007-03-22 R. J. Reynolds Tobacco Company Filtered smoking article
CN105642240A (zh) * 2014-11-10 2016-06-08 南通醋酸纤维有限公司 一种多孔二醋酸纤维素吸附剂及其制备方法和应用
CN105642240B (zh) * 2014-11-10 2018-04-06 南通醋酸纤维有限公司 一种多孔二醋酸纤维素吸附剂及其制备方法和应用

Also Published As

Publication number Publication date
FR1465842A (fr) 1967-01-13
BE674968A (enrdf_load_html_response) 1966-05-03
US3403689A (en) 1968-10-01
GB1085582A (en) 1967-10-04
ES321774A1 (es) 1967-01-01

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