DE3200068A1 - Moist cigarette filter - Google Patents

Abstract

A conventional cigarette filter according to the current state of the art is pretreated with an abovementioned, hygroscopically acting substance approved under food law or produced with the additional use of one of these substances. In a combination of this moist filter with conventional filters, a major part of the particle gas phase and gas vapour phase is condensed by the "water pipe effect".

Description

Description.

Title: Cigarettes - Wet Filter.

Field of application: The invention relates to a more efficient filter for cigarettes.

Purpose For when smoking cigarettes in the smoker's mouth The main stream arriving should contain a significantly larger proportion of smoke constituents (solid - liquid particle phase, condensable gas vapor phase and gas phase) in the improved filters are retained.

State of the art: Are used as filter materials for cigarette filters used: e.g. cellulose acetate, polyethylene, crepe or other paper, activated carbon Remove filter materials from the main stream entering the smoker's mouth and thus becomes physiologically effective, part of the nicotine and tar. The effectiveness this mechanical filter is essentially a function of the draw resistance (see Annex: From Römpp "Lexicon of Chemistry" from page 3444 tobacco and from page 3979 cigarettes.) Criticism of the state of the art: The purely mechanical filters create particles and alkaloids are retained. Activated carbon filters selectively remove gas / vapor phase components adsorbed.

The activated carbon filters are technically more difficult to manufacture cigarettes to use.

So far it is only possible to have nicotine and condensate values in the main stream of tobacco smoke according to the filter length, the filter material and the admixture of substitutes to reduce tobacco.

Task: The invention is based on the task of the retention of Improve pollutants from tobacco smoke in the cigarette filter.

Solution: The object is achieved according to the invention in that a conventional Filter is combined with a moist filter.

This wet filter is made by impregnating a conventional one Filters with a hygroscopic substance or processing of a hygroscopic acting substance Titl Ziare4t? Ii-humid filter during production of the filter material absorbed the hygroscopic substance, forms one in the treated filter part Moist film. This results in a "water pipe effect" in the filter material when smoking The main stream of smoke is sucked through this humid zone, becoming larger Fractions of the particle gas and gas vapor phase condensed.

For example, substances approved under food law can be used be: calcium acetate potassium phosphate, dibasic calcium chloride potassium phosphate Calcium Chloride Anhydride Sodium Pyrophosphate Calcium Chloride Solution Sodium Citrate Calcium citrate sodium - di - acetate calcium di-sodium EDTA sodium gluconate calcium Gluconate Sodium Meta Phosphate Calcium Monophosphate Sodium Polyphosphate Calcium Sulphate Sodium Potassium Tartrate Di - Sodium EDTA Sodium Tartrate Glucose - delta - Lactone Sodium Thiosulfate Oxystearin Sorbitol Phosphoric Acid Sorbitol Solution Potassium Citrate Tartaric acid potassium gluconate triethyl citrate Further embodiment of the invention: According to the invention a cigarette filter is made up of I.) an untreated filter part or two untreated filter parts and 2.) a treated filter part as a "wet filter", designated.

The moist filter has a hygroscopic substance treated, e.g. with one of the named substances.

Achievable Advantages: The advantages achieved by the invention exist in particular that by the combination of a conventional cigarette filter with the wet filter, a significantly higher proportion of that in the main stream of tobacco smoke contained pollutants is retained in the filter part of the cigarette.

Title cigarettes - moist filter Description of several exemplary embodiments: see drawing (page 3a).

According to the invention, a filter is treated by moistening a conventional filter material with an o, 5 - I molar solution one of the named called hygroscopic substances or by using one of these substances in the manufacture of the filter material. In all cases it is necessary that the treated filter is dried before further processing.

The moisture-repellent wrapping paper should be approx. 2 - 3 mm longer than the filter to prevent the cigarettes from being stored in the Packaging show a damp zone on the cigarette wrapping paper.

To I.) The filter is composed of three parts A untreated filter part C "" B treated filter part The filter parts are covered by a wrapping paper Surrounded by moisture-repellent material.

Mechanical retention occurs in the first untreated filter part the particle phase and achieved by alkaloids.

Those transported with the steam in the smoke or steam distilled Tobacco or smoke ingredients are partly condensed in the untreated filter Partly dissolved in the wet filter zone. Substantial proportions of the alkaloids are also dissolved (Nicotine) and phenols dissolved in the water film of the wet filter normal filter causes a mechanical retention of the particle phase again.

To II.) The filter consists of only two parts, the Part A was treated with a hygroscopic substance on only one side. Mode of action All management I.

Claims: Generic term: I. Cigarettes - wet filter.

Characteristic rl'eil: Marked by the fact that a normal cigarette filter according to the current state of the art with a treated according to the invention or manufactured filter is combined.

Description of several exemplary embodiments.

The total filter length corresponds to the filter length of a light cigarette.

A = untreated B = treated C = untreated D = wrapping paper made of moisture-repellent material A: B: = 1: 0.5: 1 A = untreated Axx = treated B - ua-treated C = wrapping paper, moisture-repellent A: B = 1: 1

Claims (1)

Title: Cigarettes - Moisture Filters Patent Claims: Patent Entideshuoh1. Cigarettes - wet filters. Identifying part: Identified by the fact that a normal cigarette filter according to the current state of the art with a treated according to the invention or manufactured filter is combined. Claim 2. Cigarettes - wet filter according to claim 1 characterizing Part of the dependent claim: characterized in that a conventional cigarette filter Manufactured according to the current state of the art, with a food law approved hygroscopic substance pretreated or with the use of a of the above substances is produced.