FR2199639A5 - Filter for tar removal from tobacco smoke - comprising asbestos fibres impregnated with sodium chloride - Google Patents

Filter for tar removal from tobacco smoke - comprising asbestos fibres impregnated with sodium chloride

Info

Publication number
FR2199639A5
FR2199639A5 FR7329755A FR7329755A FR2199639A5 FR 2199639 A5 FR2199639 A5 FR 2199639A5 FR 7329755 A FR7329755 A FR 7329755A FR 7329755 A FR7329755 A FR 7329755A FR 2199639 A5 FR2199639 A5 FR 2199639A5
Authority
FR
France
Prior art keywords
filter
asbestos fibres
sodium chloride
asbestos
fibres
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
FR7329755A
Other languages
French (fr)
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.)
CRISAFULLI DOMENICO IT
Original Assignee
CRISAFULLI DOMENICO IT
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
Priority claimed from IT6993472A external-priority patent/IT968344B/en
Priority claimed from IT6701973A external-priority patent/IT1048403B/en
Application filed by CRISAFULLI DOMENICO IT filed Critical CRISAFULLI DOMENICO IT
Application granted granted Critical
Publication of FR2199639A5 publication Critical patent/FR2199639A5/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
    • A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
    • A24D3/166—Silicic acid or silicates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Filtering Materials (AREA)

Abstract

The filter consists of a cylinder of lightly compacted asbestos fibre, previously treated by immersion in a satd. soln. of NaCl and dried; the fibres agglomerated by the salt deposits are then carefully sepd. An auxiliary filtering elements, pref. of crinkled paper, has the essential function of preventing asbestos fibres from being carried outside the filter envelope, under the aspiration effect exercised by the smoker. The asbestos fibres in the forward zone are adhered to the envelope by a thin layer of adhesive. For use in a cigarette-holder or a pipe, the filter is mounted in a cartridge with an open or perforated end. It can be made to be removable, so that it can be thrown away after it has become clogged.
FR7329755A 1972-09-16 1973-08-14 Filter for tar removal from tobacco smoke - comprising asbestos fibres impregnated with sodium chloride Expired FR2199639A5 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT6993472A IT968344B (en) 1972-09-16 1972-09-16 FILTER SUITABLE TO HOLD AND CONDEN SIZE THE TARAMOUS SUBSTANCES CONTAINED IN TOBACCO SMOKE
IT6701973A IT1048403B (en) 1973-01-08 1973-01-08 Filter for tar removal from tobacco smoke - comprising asbestos fibres impregnated with sodium chloride

Publications (1)

Publication Number Publication Date
FR2199639A5 true FR2199639A5 (en) 1974-04-12

Family

ID=26329691

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7329755A Expired FR2199639A5 (en) 1972-09-16 1973-08-14 Filter for tar removal from tobacco smoke - comprising asbestos fibres impregnated with sodium chloride

Country Status (1)

Country Link
FR (1) FR2199639A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998006282A1 (en) * 1996-08-14 1998-02-19 Michael Patrick Gray Protective devices for smoking

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998006282A1 (en) * 1996-08-14 1998-02-19 Michael Patrick Gray Protective devices for smoking

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Legal Events

Date Code Title Description
ST Notification of lapse