JPH11308987A - Pipe for no-smoking and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject inexpensive pipe of uniform quality. SOLUTION: This pipe for no-smoking comprises a cellulose ester formed to rod-like shape in an air-permeable manner; wherein the cellulose ester is spiked with triacetin and a tobacco extract afforded from tobacco leaves. The amounts of the tobacco extract and the triacetin to be spiked are such as to total about 1-30 pts.wt. based on 100 pts.wt. of the cellulose ester. The extraction solvent to be used for affording tobacco extract from tobacco leaves is e.g. a triacetin-contg. solvent such as a mixed solvent of triacetin and an alcohol.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inexpensive and uniform smoking cessation pipe and a method for producing the same.

[0002]

2. Description of the Related Art Smoking cessation is becoming a kind of boom due to recent health trends and social backgrounds. As one of the basic means of smoking cessation, a method of using a smoking cessation pipe is relatively frequently adopted. Many of the smoking pipes currently on the market are of the type in which various additives including fragrances are filled in a plastic molded holder, and although there are advantages such as high mechanical strength, they are not necessarily It is not cheap. In addition, there are cases where the quality such as the degree of force required for suction is not uniform, and furthermore, there is a sense of incongruity because the mouth feel is different from that of a cigarette filter at the time of smoking.

[0003] As a non-smoking pipe using cellulose acetate, which is widely used as a filter for cigarette smoke, a non-smoking pipe in which cellulose acetate is impregnated with menthol or the like is commercially available. Not always, but often lacks satisfaction.

[0004]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an inexpensive smoking cessation pipe and a method for producing the same. Another object of the present invention is to provide a smoking cessation pipe of uniform quality and a method of manufacturing the same. further,
It is another object of the present invention to provide a smoking cessation pipe with a pleasant texture and a scent of tobacco, and a method for producing the same.

[0005]

Means for Solving the Problems The present inventors have conducted intensive studies to achieve the above object, and as a result, have found that triacetin, which is a plasticizer of a cellulose ester widely used as a filter for cigarette smoke, and triacetin extracted from tobacco. A liquid mixture containing tobacco extract is added to a fibrous or powdery cellulose ester and wound up with wrapping paper, so that conventional cigarette smoke filter winders and plasticizer addition equipment can be used as is and high-speed mass production The present inventors have found that a non-smoking pipe of uniform quality can be manufactured at a low cost, and completed the present invention.

[0006] That is, the present invention relates to a smoking cessation pipe made of a cellulose ester formed in a rod-like and breathable manner, wherein the cellulose ester is added with a tobacco extract and triacetin extracted from leaf tobacco. Provide pipes for The present invention also provides a method for producing a non-smoking pipe, in which a mixed solution containing a tobacco extract and triacetin extracted from leaf tobacco is added to a fibrous or powdery cellulose ester, and the sheet is rolled up into a rod shape by a sheet.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the cellulose ester include organic acid esters such as cellulose acetate, cellulose propionate and cellulose butyrate; inorganic acid esters such as cellulose nitrate, cellulose sulfate and cellulose phosphate; Examples thereof include mixed acid esters such as pionate, cellulose acetate butyrate, cellulose acetate phthalate, and cellulose nitrate; and cellulose ester derivatives such as polycaprolactone-grafted cellulose acetate. These cellulose esters can be used alone or in combination of two or more.

The average degree of polymerization of the cellulose ester is, for example, about 10 to 1,000, preferably about 50 to 900, and more preferably about 200 to 800, and the average degree of substitution of the cellulose ester is, for example, about 1 to 3.

Preferred cellulose esters include organic acid esters (for example, esters with an organic acid having about 2 to 4 carbon atoms), especially cellulose acetate. The degree of acetylation of cellulose acetate is, for example, often about 30 to 62% (particularly 43 to 62%).

The cellulose ester may be in the form of a fiber or powder. The fineness of the fibrous cellulose ester (cellulose ester fiber) is, for example, 1 to
It is about 16 denier, preferably about 1 to 10 denier, and more preferably about 2 to 8 denier. The cellulose ester fiber may be a non-crimped fiber, but is preferably a crimped fiber. The degree of crimp of the crimped fiber is, for example, about 5 to 75 pieces, preferably about 10 to 50 pieces per inch. When crimped fibers are used, appropriate airflow resistance can be obtained, channeling can be suppressed, and fibers can be effectively bonded to each other.

The cross-sectional shape of the cellulose ester fiber is not particularly limited, and may be, for example, circular, elliptical, or irregular (for example,
(Y-shape, X-shape, I-shape, R-shape, etc.) or hollow shape. The cellulose ester fiber may be used as a fiber bundle in which, for example, 3000 to 1,000,000, preferably 5000 to 100,000 short fibers are bundled. The average particle size of the powdered cellulose ester is
It can be appropriately selected within a range that does not impair air permeability and workability, and is, for example, about 0.1 to 500 μm.

The cellulose ester may contain other fibrous or powdery polymers as long as the air permeability and processability are not impaired. Examples of such a polymer include olefin-based polymers such as polyethylene and polypropylene, polyester, polyamide, rayon and the like. In addition, various additives may be added to the cellulose ester, for example, inorganic fine powders such as kaolin, talc, diatomaceous earth, quartz, calcium carbonate, barium sulfate, titanium oxide, and alumina; salts of alkaline earth metals such as calcium and magnesium Heat stabilizers such as colorants; oil agents; retention enhancers; environmental degradation agents (biodegradation accelerators) such as citric acid, tartaric acid, and malic acid; photodegradation accelerators such as anatase-type titanium oxide; hot melt adhesives May be added. In particular, when a powdery cellulose ester is used, the cellulose ester can be held in a rod shape by a hot melt adhesive. Examples of the hot melt adhesive include thermoplastic resins such as an ethylene-vinyl acetate copolymer, an ethylene-acrylate copolymer, a polyamide resin, and a polyester resin. As the hot melt adhesive, a water-soluble thermoplastic resin such as a polyvinyl alcohol-based resin may be used.

The leaf tobacco may be cut into various suitable sizes. In many cases, the leaf tobacco is used in the form of powder to improve the extraction efficiency of the tobacco extract with the solvent.

The solvent for extracting the tobacco extract is not particularly limited, and may be, for example, one or more of alcohol, ketone, ester, ether, nitrile, carboxylic acid, halogenated hydrocarbon, aromatic hydrocarbon and the like. Two or more types can be appropriately selected and used. Preferred extraction solvents include:
A solvent containing at least triacetin is included. Triacetin has been conventionally used as a plasticizer for cellulose esters when producing tobacco smoke filters. Therefore, when the solvent is used, triacetin can be used not only as an extraction solvent but also as a plasticizer for cellulose ester. Triacetin also has a function as a binder for bonding cellulose ester fibers to each other, for example.

The solvent used in combination with triacetin is preferably a solvent having a lower boiling point than triacetin (hereinafter, simply referred to as a "low-boiling solvent"), since only the triacetin can be removed by evaporation in the subsequent step. In a mixed solvent of triacetin and another solvent, the concentration of triacetin is, for example, 30% by weight or more, preferably 50% by weight or more, and more preferably 60% by weight or more.

More preferred extraction solvents include triacetin or a mixture of triacetin and alcohol. When a solvent containing an alcohol is used, the extraction efficiency of the tobacco extract is significantly improved. As the alcohol, it is preferable to use at least one selected from methanol and ethanol having a low boiling point, in order to facilitate drying and removal in a subsequent step. The amount of alcohol to be mixed with triacetin can be appropriately selected according to the extraction efficiency and the quality of the finished smoking pipe. For example, the volume ratio of triacetin /
Alcohol = 10/0 to 3/7 (for example, 10/0 to 5
/ 5), preferably about 9/1 to 6/4. If the amount of triacetin is too small, the hardness of the resulting smoking cessation pipe becomes too soft, and there is a possibility that the feeling of discomfort when holding it in the mouth may increase.

The extraction can be carried out by a conventional method, for example, by charging leaf tobacco into an extraction solvent, stirring, or applying vibration. The extraction temperature is not particularly limited. However, in order to increase the extraction efficiency, the solvent is often extracted while refluxing the solvent at a temperature near the boiling point of the solvent.

The amount of the extraction solvent to be used can be appropriately set in consideration of workability and economy, but in order to increase the extraction efficiency, 5 parts by weight or more (for example, 5 to 10 parts by weight) per 1 part by weight of leaf tobacco is used.
(About 0 parts by weight).

The extracted tobacco extract may be added to the cellulose ester, for example, by spraying (spraying) or impregnating the cellulose ester on the cellulose ester as it is, or after concentrating or diluting as necessary. It can be done by doing. In this addition operation, it is possible to directly use a plasticizer addition device or the like conventionally used in the manufacture of a filter for tobacco smoke.

When extraction is performed using a solvent that does not contain triacetin, for example, when a tobacco extract is extracted with an alcohol such as methanol or ethanol, a mixture obtained by adding triacetin to the extract is mixed with a cellulose ester. Can be added.

The amount of the tobacco extract to be added to the cellulose ester can be appropriately selected in consideration of the degree of tobacco fragrance and the like.
The amount is, for example, about 1 to 30 parts by weight, preferably about 2 to 25 parts by weight with respect to parts by weight. If the amount is too small, it is difficult to impart sufficient tobacco fragrance to the cellulose ester. On the other hand, if the amount is too large, the winding operability with a sheet may be reduced.

As a sheet (wrapping paper) for winding a cellulose ester to which a tobacco extract is added into a rod shape, a paper filter wrapping paper conventionally used for a tobacco smoke filter can be used as it is.
Further, a thin plastic sheet may be used as the sheet in order to prevent the liquid from being softened by saliva while being added to the mouth. Examples of the plastic sheet include a polyolefin sheet such as a polyethylene sheet and a polypropylene sheet; and a polystyrene sheet such as a polystyrene sheet. The sheets can be used alone or in combination of two or more. For the winding operation using the sheet, a hoisting machine conventionally used in the manufacture of tobacco smoke filters can be used as it is.

When an extraction solvent containing a low boiling point solvent is used, the drying and removal of the low boiling point solvent may be carried out under conditions and methods which do not adversely affect the cellulose ester and the wrapping paper. Can be performed. Drying and removal of the low-boiling solvent may be performed before the winding operation with the sheet, but is often performed after the winding operation.

By adjusting the operating conditions of the hoist,
The length and circumference of the smoking pipe can be arbitrarily large. Also, by using a hoisting machine conventionally used in the manufacture of tobacco smoke filters, it is possible to manufacture at a high speed of 600 m or more per minute as in the case of tobacco smoke filters.

[0025]

According to the smoking pipe of the present invention and the method for producing the same, the filter winding machine for tobacco smoke which has been conventionally used can be used as it is, and high-speed mass production is easy. Uniformity can be maintained. Also,
It is pleasant to the touch and has a scent of tobacco, which gives the user a sense of satisfaction.

[0026]

EXAMPLES The present invention will be described below in more detail with reference to Examples, but the present invention is not limited to these Examples. In Examples and Comparative Examples, the characteristics of the non-smoking pipe samples were evaluated by the following methods. Ventilation resistance: Pressure loss (mmH ₂ O) when the flow rate of air passing through the sample for smoking was 17.5 ml / sec was measured using an automatic ventilation resistance meter (FTS30 manufactured by Filtrona).
0). Hardness: A load is applied on the center of a 100-mm-long non-smoking pipe sample with a cylindrical weight having a diameter of 12 mm and a weight of 300 g, and the dent amount of the sample after 10 seconds is 0.1.
mm was set to 1 and evaluated. Quality: In the case of a normal tobacco filter, the practical value of the variation of the airflow resistance in the above-mentioned measuring method is 3% or less in CV value (standard deviation divided by the average value), and the practical value of hardness is 10%. Therefore, when this standard was satisfied, it was judged that there was no problem in quality and the quality was uniform. Smell: The presence or absence of tobacco scent at the time of suction was confirmed by actually sucking with a mouth. The above measurement was performed on 20 non-smoking pipe samples that had been left in an atmosphere at a temperature of 23 ° C. and a relative humidity of 65% for about 24 hours or more, and had been conditioned.

Example 1 Triacetin 5 liter (manufactured by Daicel Chemical Industries, Ltd.)
And 5 liters of methanol (manufactured by Wako Pure Chemical Industries, Ltd.) in a mixed solvent containing commercially available tobacco (Japan Tobacco Inc.)
1 kg of leaf tobacco obtained by pulverizing leaf tobacco into a powder with a mixer, heating and refluxing at 70 ° C. for 3 hours, then filtering the mixture, and filtering the filtrate with a tobacco extract extract did. A toe of cellulose diacetate fiber (total denier 40,000) composed of 4.0 denier filaments having a Y-shaped cross section has a width of about 20 c.
m, and the cigarette extract extract was reduced to 20% of the weight of the cellulose diacetate using a plasticizer addition device of a cigarette smoke filter manufacturing hoist (KDF2 / AF1 manufactured by Hauni). So that it was evenly spread on the tow. Next, the tow is supplied to a paper winding device, and is wound up at a winding speed of 400 m / min by using a winding paper (plain paper 26 mm width), and the obtained filter rod is cut to a length of 100 m with a cutter.
After being cut into mm, methanol was removed by drying under reduced pressure to obtain a pipe sample for smoking cessation. When the ventilation resistance and the hardness of the obtained sample were measured, the sample passed the above criteria, and when sucked, a faint tobacco smell was obtained.

Example 2 A non-smoking pipe sample was obtained in the same manner as in Example 1 except that a mixed solution of 7.5 liters of triacetin and 2.5 liters of methanol was used as a solvent for extracting a tobacco extract. . When the airflow resistance and hardness of the obtained sample were measured, the above criteria were cleared,
On inhalation, it smelled of faint tobacco.

Example 3 A non-smoking pipe sample was obtained in the same manner as in Example 1 except that a polystyrene sheet (26 mm width) was used as the wrapping paper instead of the conventional filter wrapping paper. When the ventilation resistance and the hardness of the obtained sample were measured, the sample passed the above criteria, and when sucked, a faint tobacco smell was obtained.

Comparative Example 1 A non-smoking pipe sample was obtained in the same manner as in Example 1 except that 10 liters of methanol was used as a solvent for extracting a tobacco extract. When the airflow resistance and the hardness of the obtained sample were measured, the variation of the airflow resistance met the above criteria, but the hardness was too soft and did not meet the above criteria.

Claims (13)

[Claims] 1. A non-smoking pipe made of a cellulose ester formed in a rod-like and air-permeable form, wherein the tobacco extract and triacetin extracted from leaf tobacco are added to the cellulose ester. 2. A tobacco extract extracted from leaf tobacco with a solvent containing triacetin is added.
Smoking pipe as described. 3. The smoking pipe according to claim 1, comprising a total of 1 to 30 parts by weight of the tobacco extract and triacetin based on 100 parts by weight of the cellulose ester. 4. A method for producing a non-smoking pipe, wherein a mixed solution containing a tobacco extract and triacetin extracted from leaf tobacco is added to a fibrous or powdery cellulose ester, and the sheet is rolled up into a rod shape by a sheet. 5. The method for producing a smoking cessation pipe according to claim 4, wherein a tobacco extract extracted from leaf tobacco with a solvent containing triacetin is added to the cellulose ester. 6. An extract obtained by extracting from a tobacco leaf leaf cigarette with a mixed solvent of triacetin and a solvent having a boiling point lower than that of triacetin is added to the cellulose ester, and the resulting mixture is wound up on a sheet. 5. The method for producing a smoking cessation pipe according to claim 4, wherein the pipe is dried and removed. 7. The method for producing a smoking cessation pipe according to claim 5, wherein triacetin or a mixture of triacetin and alcohol is used as the extraction solvent. 8. The volume ratio of triacetin to alcohol is:
The method for producing a non-smoking pipe according to claim 7, wherein the former / the latter is 10/0 to 3/7. 9. The method according to claim 7, wherein at least one selected from methanol and ethanol is used as the alcohol.
Or the method for producing a smoking cessation pipe according to 8. 10. The method for producing a smoking cessation pipe according to any one of claims 4 to 9, wherein leaf tobacco is used as leaf tobacco and powdered tobacco is used. 11. The method for producing a smoking cessation pipe according to claim 4, wherein the extraction solvent is used in an amount of 5 parts by weight or more per 1 part by weight of leaf tobacco. 12. The method for producing a smoking cessation pipe according to claim 4, wherein the extraction is carried out under a reflux condition of the solvent. 13. The method for producing a smoking cessation pipe according to claim 4, wherein a paper, a polyolefin-based sheet or a polystyrene-based sheet is used as the winding sheet.