GB915783A - Filter bodies and process of preparing same - Google Patents

Filter bodies and process of preparing same

Info

Publication number
GB915783A
GB915783A GB13310/61A GB1331061A GB915783A GB 915783 A GB915783 A GB 915783A GB 13310/61 A GB13310/61 A GB 13310/61A GB 1331061 A GB1331061 A GB 1331061A GB 915783 A GB915783 A GB 915783A
Authority
GB
United Kingdom
Prior art keywords
tow
melting point
fibres
filaments
heater
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
Application number
GB13310/61A
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.)
Reeves Brothers Inc
Original Assignee
Reeves Brothers Inc
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 Reeves Brothers Inc filed Critical Reeves Brothers Inc
Publication of GB915783A publication Critical patent/GB915783A/en
Expired legal-status Critical Current

Links

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
    • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent

Abstract

A rod-like filter for cigarettes comprises a plurality of polyolefin fibres extending there along and bonded together with a polyolefin material of lower melting point distributed throughout the mass of fibres. A crimped and blended tow, of total denier 50,000, composed of 17,000 filaments of isotactic polypropylene of melting point 170 DEG C. and 3,000 filaments of high density polyethylene of melting point 130 DEG C., is drawn off continuously from a supply at about 300 feet per minute by means of circumferentially grooved godet rolls. The tow is then opened up by means of air jets into a thin flat ribbon and taken up by a flattening roll system whence it is passed through a heating chamber wherein it is heated to between 115 DEG C. and 120 DEG C., the applied heat being controlled by the speed of the tow passing through. The ribbon of tow, while passing through the heater, is progressively contracted to a width of about 16 mm. by a set of godet rolls with peripheral grooves at the discharge end of the heater. The tow is then led into a funnel-shaped condensing former and the resulting rod is passed through a cooler, cut into suitable lengths and wrapped to form filter plugs. The filaments for use in the tow are obtained by melt extrusion through spinnerettes, sized to yield filaments of 6.25 denier, then blending in the desired proportions to form a mixed tow, which tow is then stretched and relaxed to give a net stretch ratio of 1.0 to 2.5. This stretching ratio produces partial molecular orientation of the fibres and is 25% of that required for full molecular orientation. The fibres of greater melting point should be at least 50% greater in total weight than the lower melting point fibres in the blended tow.
GB13310/61A 1960-04-25 1961-04-13 Filter bodies and process of preparing same Expired GB915783A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24328A US3144025A (en) 1960-04-25 1960-04-25 Tobacco smoke filters

Publications (1)

Publication Number Publication Date
GB915783A true GB915783A (en) 1963-01-16

Family

ID=21820029

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13310/61A Expired GB915783A (en) 1960-04-25 1961-04-13 Filter bodies and process of preparing same

Country Status (2)

Country Link
US (1) US3144025A (en)
GB (1) GB915783A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182350A (en) * 1976-05-28 1980-01-08 Hoechst Aktiengesellschaft Cigarette filter

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3329544A (en) * 1961-05-11 1967-07-04 Cigarette Components Ltd Method of producing filter cores
NL279165A (en) * 1961-06-02
US3229008A (en) * 1961-12-05 1966-01-11 Eastman Kodak Co Process for producing a polypropylene fibrous product bonded with polyethylene
US3346682A (en) * 1962-03-16 1967-10-10 Du Pont Method for making a filtering medium from plexifilamentary material
US3451887A (en) * 1963-03-22 1969-06-24 Eastman Kodak Co Blends of cellulose acetate and polyolefin fibers in tow form
US3286307A (en) * 1963-09-09 1966-11-22 Celanese Corp Cylindrical banding jets
US3323961A (en) * 1963-10-10 1967-06-06 Eastman Kodak Co Method and apparatus for forming rodshaped fibrous elements
US3384932A (en) * 1964-02-28 1968-05-28 Celanese Corp Method of improving the uniformity of an unopened tow band and apparatus for making cigarette filters therefrom
GB1114922A (en) * 1964-06-17 1968-05-22 Mini Of Technology Manufacture of mouldings from acrylonitrile copolymers
US3439394A (en) * 1964-07-13 1969-04-22 Celanese Corp Process for making a splittable crimped tow
US3272687A (en) * 1964-07-22 1966-09-13 Eastman Kodak Co Vapor permeable non-woven fibrous element
US3384944A (en) * 1965-02-10 1968-05-28 Du Pont Apparatus for extruding and blending
US3336174A (en) * 1965-04-06 1967-08-15 Eastman Kodak Co Method of making a fibrous filter product
GB1142785A (en) * 1965-06-04 1969-02-12 Courtaulds Ltd Cigarette tow
GB1085567A (en) * 1965-06-28 1967-10-04 Ici Ltd Improvements in or relating to compact filament bundles and their production
US3393685A (en) * 1965-10-24 1968-07-23 Eastman Kodak Co Self-crimping, self-bonding fibrous polyolefin tobacco smoke filter
US3386145A (en) * 1966-02-10 1968-06-04 Eastman Kodak Co Quality monitoring system for continuously moving filamentary structures
US3461882A (en) * 1967-05-08 1969-08-19 Celanese Corp Method of filtering tobacco smoke
US3377220A (en) * 1967-06-09 1968-04-09 American Filtrona Corp Process for making stable elongated elements
US3852007A (en) * 1970-05-13 1974-12-03 Celanese Corp Apparatus for making filters
JPS53145999A (en) * 1977-05-25 1978-12-19 Japan Tobacco Inc Preparation of cigarette filter
JPS5922511B2 (en) * 1978-04-22 1984-05-26 ダイセル化学工業株式会社 Tobacco smoke filter
US4798570A (en) * 1982-12-09 1989-01-17 Hercules Incorporated Process for preparing filter rods
US4525385A (en) * 1983-02-18 1985-06-25 R. J. Reynolds Tobacco Company Application of additives to cigarette filter tow
CS237872B1 (en) * 1983-06-09 1985-11-13 Rudolf Simo Cigarette filtration stick filling and method of this filling making
US4728387A (en) * 1986-12-15 1988-03-01 General Electric Company Resin impregnation of fiber structures
US5053066A (en) * 1990-05-04 1991-10-01 Hassenboehler Charles B Nonwoven filter and method of manufacture
US5042111A (en) * 1990-11-01 1991-08-27 Board Of Trustees Operating Michigan State University Method and system for spreading a tow of fibers
US5817159A (en) * 1996-12-31 1998-10-06 Cahill; Scott A. Filter with interpenetrating polymer network that biodegrades
GB0905210D0 (en) 2009-03-26 2009-05-13 British American Tobacco Co Rod for a smoking article and method and apparatus for manufacture
US8893725B2 (en) 2011-01-28 2014-11-25 R. J. Reynolds Tobacco Company Polymeric materials derived from tobacco
KR20140105477A (en) * 2011-12-22 2014-09-01 데이진 가부시키가이샤 Method for manufacturing reinforcing fiber strands
US9119419B2 (en) * 2012-10-10 2015-09-01 R.J. Reynolds Tobacco Company Filter material for a filter element of a smoking article, and associated system and method

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2500282A (en) * 1944-06-08 1950-03-14 American Viscose Corp Fibrous products and process for making them
US2707308A (en) * 1948-12-10 1955-05-03 British Celanese Method of making a filter element
US2794480A (en) * 1952-12-05 1957-06-04 Eastman Kodak Co Apparatus for the manufacture of filters composed of cellulose acetate
US3039908A (en) * 1953-07-13 1962-06-19 Hollingsworth & Vose Co Method of making a tobacco smoke filter
US2818868A (en) * 1954-08-04 1958-01-07 Du Pont Polyethylene terephthalate tobacco smoke filter
US2812796A (en) * 1955-04-18 1957-11-12 American Viscose Corp Apparatus for producing an absorbent element for filters
US2812767A (en) * 1955-05-17 1957-11-12 American Viscose Corp Absorbent element for filters and the like
US2966157A (en) * 1957-06-07 1960-12-27 Eastman Kodak Co Polyolefin tobacco smoke filters
US2933154A (en) * 1957-07-31 1960-04-19 Du Pont Process for filtering with polytetrafluoroethylene fibers
FR2184545B1 (en) * 1972-05-17 1980-03-14 Rhone Poulenc Ind

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182350A (en) * 1976-05-28 1980-01-08 Hoechst Aktiengesellschaft Cigarette filter

Also Published As

Publication number Publication date
US3144025A (en) 1964-08-11

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