IE35242L - Filtering material. - Google Patents

Filtering material.

Info

Publication number
IE35242L
IE35242L IE60871A IE60871A IE35242L IE 35242 L IE35242 L IE 35242L IE 60871 A IE60871 A IE 60871A IE 60871 A IE60871 A IE 60871A IE 35242 L IE35242 L IE 35242L
Authority
IE
Ireland
Prior art keywords
web
filters
filter
derivative
treated
Prior art date
Application number
IE60871A
Other versions
IE35242B1 (en
Original Assignee
Celanese 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 Celanese Corp filed Critical Celanese Corp
Priority to IE1848/74A priority Critical patent/IE35243B1/en
Publication of IE35242L publication Critical patent/IE35242L/en
Publication of IE35242B1 publication Critical patent/IE35242B1/en

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
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
    • A24D3/0212—Applying additives to filter materials
    • A24D3/022—Applying additives to filter materials with liquid additives, e.g. application of plasticisers

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

1355519 Tobacco-smoke filters CELANESE CORP 13 May 1971 [13 May 1970] 14707/71 Heading A2C [Also in Division D1] In the production of tobacco smoke filters, a polyolefine filamentary web 10 is drawn from a supply 12, treated with a film-forming organic derivative of cellulose at 16, dried at 18, leaving 10-40% of the derivative base on web plus derivative, on the web transversely stretched (to break up the film into adhering particles) by grooved rollers 22, patterned with straight, zig-zag or sinusoidal depressions by rolls 24, treated with a plasticiser at 26 and condensed into a filter rod at 28 which is chopped off into lengths at 30. The web may be made of polyethylene or polypropylene, of an intrinsic viscosity of from 0.4 to 1.25. The web may have a surface area per gram of 0.2-2.0 sq. metres. The filters may be used together with paper filters or cellulose acetate filter segments in a dual filter. The web may be sandwiched with other webs to form the filter. [GB1355519A]
IE60871A 1970-05-13 1971-05-13 Improvements relating to filtering material and cigarettes containing same IE35242B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IE1848/74A IE35243B1 (en) 1970-05-13 1971-05-13 Production of non-woven material for tobacco smoke filters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3674670A 1970-05-13 1970-05-13

Publications (2)

Publication Number Publication Date
IE35242L true IE35242L (en) 1971-11-13
IE35242B1 IE35242B1 (en) 1975-12-24

Family

ID=21890407

Family Applications (1)

Application Number Title Priority Date Filing Date
IE60871A IE35242B1 (en) 1970-05-13 1971-05-13 Improvements relating to filtering material and cigarettes containing same

Country Status (6)

Country Link
AT (1) AT320499B (en)
CA (1) CA935346A (en)
GB (1) GB1355519A (en)
IE (1) IE35242B1 (en)
MY (1) MY7500020A (en)
PH (1) PH13601A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013209591A1 (en) * 2013-05-23 2014-11-27 Hauni Maschinenbau Ag Material entry in a filter tow

Also Published As

Publication number Publication date
AT320499B (en) 1975-02-10
PH13601A (en) 1980-08-05
IE35242B1 (en) 1975-12-24
MY7500020A (en) 1975-12-31
CA935346A (en) 1973-10-16
GB1355519A (en) 1974-06-05

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