KR101691543B1 - Cigarette filter and manufactureing method thereof - Google Patents

Abstract

A tobacco filter and a method of manufacturing the same are provided, and a cigarette filter according to an embodiment of the present invention includes a lyocell tow including a plurality of lyocell fibers, and a quadratic alkyl Wherein the plurality of lyocell fibers comprise a plasticizer component comprising at least one of quaternary alkylammonium hydroxide or quaternary alkylphosphonium hydroxide, A lyocell fiber and a second lyocell fiber.

Description

CIGARETTE FILTER AND MANUFACTUREING METHOD THEREOF FIELD OF THE INVENTION [0001]

A tobacco filter and a method for manufacturing the same are provided.

Generally, in order to produce cigarettes, various kinds of leaf tobacco are first blended and processed so as to have desired flavor and taste. Next, the processed leaf tobacco is folded to prepare cut tobacco leaf, and the cigarette tobacco is rolled with cigarette paper to produce a filter-free cigarette. Next, the filter is attached to the filter-free cigarette if necessary.

The cigarette may be made of flax, wood pulp, etc., and it is required that the burning property and flavor of the cigarette are maintained when burned. The cigarette filter may include activated charcoal, flavor, etc., and may be composed of mono filters or multiple filters and is surrounded by cigarette filter wrapping paper. The tobacco filter is connected to the cigarette buttocks by tipping paper, and the tip paper may contain fine holes.

Conventional cigarette filters use cellulose acetate tow which is acetylated by extracting cellulose from wood pulp. In recent years, development of substitute materials for eco-friendly materials has been proceeding in order to protect natural environment and reduce cost. For example, unlike cellulose acetate, the development of tow using lyocell fiber in which cellulose itself is fibrous is under development.

When a cigarette filter is manufactured from a bundle of fiber strands, the cigarette filter is not rigid (hardness is low) unless a plasticizer or hardener is used together, so that the filter can be put on the drum during the filter manufacturing process or the cigarette manufacturing process. Therefore, it is necessary to improve the hardness of a certain level of the cigarette filter. For example, a method of increasing the hardness of a filter includes a method using a hardener and a method using a plasticizer. A method of using a hardener is a method of applying hardness (hard) to a filter by bonding fiber strands using a binder-like substance. In the method of using a plasticizer, a fiber is partially dissolved (plasticized) by using a specific substance (TA (triacetin) is used in the case of cellulose acetate) to form a joint between fibers and then plasticized.

In order to improve the hardness of the tobacco filter to be manufactured, research and development of plasticizers suitable for lyocell fibers have been conducted.

One embodiment of the present invention is to improve the hardness of a tobacco filter through a plasticizer suitable for a tow comprising lyocell.

And can be used to achieve other tasks not specifically mentioned other than the above tasks.

In one embodiment of the present invention, a lyocell tow comprising a plurality of lyocell fibers, and a quaternary alkylammonium hydroxide or quaternary alkylammonium hydroxide located within the lyocell tow, Wherein the plurality of lyocell fibers comprise a first lyocell fiber and a second lyocell fiber that are connected to each other by a junction, wherein the first lyocell fiber and the second lyocell fiber comprise at least one of a quaternary alkylphosphonium hydroxide Lt; / RTI >

The number of carbon atoms in the alkyl group of the quaternary alkylammonium hydroxide or the quaternary alkylphosphonium hydroxide may be from 1 to 8.

The alkyl group may be an ethyl group, a propyl group, a butyl group, or an octyl group.

The plasticizer component may further comprise a component comprising acetate.

The plasticizer component may be about 1 to 30 weight percent of the weight of the lyocell.

The hardness of the cigarette filter can be about 85% or more.

In one embodiment of the present invention, there is provided a method of preparing a lyocell fiber comprising preparing a lyocell tow and a plasticizer solution comprising a plurality of lyocell fibers, and contacting the plurality of lyocell fibers with a plasticizer solution, The solution provides at least one of a quaternary alkylammonium hydroxide or a quaternary alkylphosphonium hydroxide.

The number of carbon atoms in the alkyl group of the quaternary alkylammonium hydroxide or the quaternary alkylphosphonium hydroxide may be from 1 to 8.

The alkyl group may be an ethyl group, a propyl group, a butyl group, or an octyl group.

The plasticizer component of the plasticizer solution may be about 1 to 30 wt% of the weight of the lyocell.

The plasticizer solution may further comprise a component comprising acetate.

The molar ratio of the component comprising acetate to at least one of the quaternary alkylammonium hydroxide or the quaternary alkylphosphonium hydroxide of the plasticizer solution is from about 1 to 4 days .

According to one embodiment of the present invention, the hardness of the cigarette filter can be improved by including or using a tow comprising a lyocell and a suitable plasticizer therefor.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a SEM photograph of a lyocell tow applied with a plasticizer solution containing tetrabutylammonium hydroxide (TBAOH) using air spray.
2 is an SEM photograph of a lyocell tow which is impregnated with a plasticizer solution containing tetrabutylammonium hydroxide (TBAOH).
3 is an SEM photograph (X 1000) of a lyocell tow of the cigarette filter manufactured in Comparative Example 1. Fig.
4 is an SEM photograph (X 1000) of a lyocell tow of the cigarette filter manufactured in Example 1. Fig.
5 is an SEM photograph (X 1000) of the lyocell tow of the cigarette filter manufactured in Example 3. Fig.
6 is an SEM photograph (X 1000) of the lyocell tow of the cigarette filter manufactured in Example 4. Fig.
7 is a graph showing the results of ¹³ C NMR analysis of the lyocell tow of the tobacco filter prepared in Example 1 (red color graph) and Comparative Example 1 (blue color graph).
8 is a SEM (X 400) photograph of a plasticizer-treated lyocell tow when the molar ratio is 4 in Table 3;

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same reference numerals are used for the same or similar components throughout the specification. In the case of publicly known technologies, a detailed description thereof will be omitted.

In one embodiment of the present invention, a lyocell tow comprising a plurality of lyocell fibers, and a quaternary alkylammonium hydroxide or quaternary alkylammonium hydroxide located within the lyocell tow, Wherein the plurality of lyocell fibers comprise a first lyocell fiber and a second lyocell fiber that are connected to each other by a junction, wherein the first lyocell fiber and the second lyocell fiber comprise at least one of a quaternary alkylphosphonium hydroxide, Lt; / RTI >

For example, the number of alkyl groups in the quaternary alkylammonium hydroxide or quaternary alkylphosphonium hydroxide may be from 1 to 8. For example, the alkyl group may be a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group and the like. Here, when the number of carbon atoms in the alkyl group is 3 to 8, the alkyl group may be in the form of a branched chain or an unbranched chain. When the alkyl group is an ethyl group, a propyl group, a butyl group, or an octyl group, the lyocell fiber can be calcined at a relatively high rate as compared with the methyl group.

The plasticizer component may further comprise a component comprising acetate. Acetate-containing components may be added during the preparation of the plasticizer solution used in the manufacturing process of the cigarette filter including the lyocell tow. At this time, the component containing acetate can play a role of appropriately controlling the basicity of the plasticizer solution.

The plasticizer component may be about 1 to 30 weight percent of the weight of the lyocell. Within this weight range, the amount of water applied to the cigarette filter is small, which is not only advantageous for satisfying the water content standard but also can sufficiently improve the hardness.

The hardness of the cigarette filter can be about 85% or more. Within this range of hardness, the cigarette filter has a sufficient hardness, which may be advantageous for the convenience of the manufacturing process. For example, it is possible to prevent the filter from sticking to the drum in the filter manufacturing process or the cigarette manufacturing process.

In one embodiment of the present invention, there is provided a cigarette filter comprising a lyocell tow comprising a plurality of lyocell fibers and a plasticizer solution, and contacting the plurality of lyocell fibers with a plasticizer solution, Of the present invention.

Hereinafter, each step will be described in detail. In the production of the cigarette filter, the general steps known in the art are omitted.

First, preparing a lyocell tow and a plasticizer solution comprising a plurality of lyocell fibers may include dissolving a portion of a lyocell tow and a lyocell fiber comprising a plurality of lyocell fibers, To prepare a plasticizer solution for forming a fiber-to-fiber joint. The hardness of the cigarette filter fabricated by the plurality of junctions between the formed lyocell tow fibers can thereby be improved.

The plasticizer solution may comprise at least one of a plasticizer component quaternary alkylammonium hydroxide or quaternary alkylphosphonium hydroxide.

For example, the number of alkyl groups in the quaternary alkylammonium hydroxide or quaternary alkylphosphonium hydroxide may be from 1 to 8. For example, the alkyl group may be a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group and the like. Here, when the number of carbon atoms of the alkyl group is 3 or more, the alkyl group may be in the form of a branched chain or an unbranched chain. When the alkyl group is an ethyl group, a propyl group, a butyl group, or an octyl group, the lyocell fiber can be calcined at a relatively high rate as compared with the methyl group.

The plasticizer solution may further comprise a component comprising acetate. For example, the component comprising acetate may be tetrabutylammonium acetate. Acetate-containing components can play a role in properly controlling the basicity of the plasticizer solution. Therefore, it is possible to prevent the basicity of the plasticizer solution from becoming excessively high.

Next, contacting the plasticizer solution to the plurality of lyocell fibers is a step of forming a lyocell fiber junction by contacting the plasticizer solution with the lyocell fibers of the lyocell tow prepared in the previous step.

At this time, the method of contacting the plasticizer solution with the lyocell fiber may be performed by using dipping, air spray, or the like.

At this time, the plasticizer component in the plasticizer solution may be about 1 to 30 wt% of the weight of the lyocell. The plasticizer added to the filter within this weight range can partially bind the cellulose fibers to increase the hardness of the filter.

The molar ratio of the component comprising acetate to at least one of the quaternary alkylammonium hydroxide or the quaternary alkylphosphonium hydroxide of the plasticizer solution (the molar ratio of quaternary alkylammonium hydroxide to quaternary alkylphosphonium hydroxide) A component comprising a plasticizer component / acetate comprising at least one of a carboxylate, a carboxylate, a carboxylate or a quaternary alkylphosphonium hydroxide) can be from about 1 to about 4.

Within this range of molar ratios, the plasticizing ability of the produced plasticizer solution at room temperature can be maintained and the basicity (pH) can be lowered.

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples. However, the following Examples are merely examples of the present invention, but the present invention is not limited to the following Examples.

< Example  1> Lyocell  Manufacture of tobacco filters

First, a lyocell tow having a tow fiber bundle of about 35000 denier was prepared by using a lyocell fiber having a fiber length of about 3.0 denier, and the plasticizer solution for lyocell tow was prepared by mixing tetrabutylphosphonium Tetrabutylphosphonium hydroxide (TBPOH) was used in an aqueous solution of 40% w / w (TBPOH: 40 wt%, water: 60 wt%, Alfa aesar product). The addition amount of the 40% w / w TBPOH aqueous solution added to the lyocell tow was 11 wt% based on the weight of the lyocell tow used in the filter, and the added amount of pure TBPOH was 4.4 wt% based on the weight of the lyocell tow used in the filter .

Next, the plasticizer solution is sprayed on the lyocell tow using an air sprayer and the plasticizer is applied at room temperature.

Next, filter cigarettes having a diameter of about 6.9 mm are filled with a plasticizer coated with a lyocell to prepare a cigarette filter.

At this time, the tobacco filter production speed is about 500 RPM and the canopy ratio is set to about 1.5.

The manufactured tobacco filter is stored at room temperature for about 24 hours.

The length of the manufactured tobacco filter is about 108 mm, and the filter wrapper has a porosity of 24000 CU. Further information of the manufactured cigarette filter is shown in Table 2 below.

< Example  2> Lyocell  Manufacture of tobacco filters

A cigarette filter was prepared in the same manner as in Example 1, except that the plasticizer solution was dipped in a plasticizer solution and the plasticizer was applied at room temperature.

< Example  3> Lyocell  Manufacture of tobacco filters

In Example 1, the addition amount of the 40% w / w TBPOH aqueous solution added to the lyocell tow was 15 wt% based on the weight of the lyocell tow used in the filter, and the addition amount of the pure TBPOH added to the lyocell tow weight And 6.0 wt%, respectively, to prepare a tobacco filter.

Further information of the manufactured cigarette filter is shown in Table 2 below.

< Example  4> Lyocell  Manufacture of tobacco filters

In Example 1, the addition amount of the 40% w / w TBPOH aqueous solution added to the lyocell tow was 20 wt% based on the weight of the lyocell tow used in the filter, and the addition amount of the pure TBPOH added to the lyocell tow weight To 8.0% by weight, the tobacco filter was prepared.

Further information of the manufactured cigarette filter is shown in Table 2 below.

< Comparative Example  1> Lyocell  Manufacture of tobacco filters

In Example 1, a tobacco filter was prepared in the same manner as in Example 1, except that the plasticizer solution was not used. Specific information of the manufactured cigarette filter is shown in Table 2 below.

< Experimental Example  1> - SEM  Photographic picture analysis

In Example 1, a plasticizer solution containing tetrabutylammonium hydroxide (TBAOH) in place of tetra butylphosphonium hydroxide (TBPOH) was used, and about 14.63 wt. 1 shows an SEM photograph (X 200) of a lyocell coated with a plasticizer solution prepared in the same manner as in Example 1, except that the TBAOH was applied to the lyocell tow.

In Example 2, a plasticizer solution containing quaternary alkylammonium hydroxide (TBAOH) instead of quaternary alkylphosphonium hydroxide (TBPOH) was used, and about the weight of the lyocell tow 2 shows an SEM photograph (X 200) of a lyocell coated with a plasticizer solution prepared by the same method as in Example 2, except that 14.63 wt% of TBAOH was applied to the lyocell.

3 is an SEM photograph (X 1000) of a lyocell tow of the cigarette filter manufactured in Comparative Example 1. Fig. 4 is an SEM photograph (X 1000) of the lyocell tow of the cigarette filter manufactured in Example 1. Fig. 5 is an SEM photograph (X 1000) of the lyocell tow of the cigarette filter manufactured in Example 3. Fig. 6 is an SEM photograph (X 1000) of the lyocell toe of the cigarette filter manufactured in Example 4. Fig.

& Lt; Experimental Example 2 > - & lt; ^{13 &} gt; C NMR analysis

In order to observe the chemical change of the lyocell fibers by TBPOH, ¹³ C NMR analysis of the lyocell tow of the tobacco filter prepared in Example 1 (red graph) and Comparative Example 1 (blue graph) was performed, The results are shown in Fig.

The black vertical line at the bottom of the graph shows the ¹³ C NMR chemical shift corresponding to each carbon number of glucose, the basic unit of cellulosic composition. The following Formula 1 shows the structure of glucose and the respective carbon numbers, and Table 1 below shows the values of peaks corresponding to the respective carbon numbers.

Carbon number C1 Crystalline C4 Amorphous C4 C2, 3, 5 C6 ppm 104.21 86.768 82.828 74.149 62.05

As a result of the experiment, it can be seen that the same chemical shift was observed and no new chemical shift was found, as compared with the case of Comparative Example 1 in which most of the chemical shifts in the case of Example 1 were not treated with the plasticizer solution.

As a result, it can be seen that TBPOH, which is an ionic plasticizer liquid, is not substituted into the lyocell structure. Further, in Example 1, the decrease in the peak corresponding to the amorphous C4 is due to the fact that TBPOH attacks relatively accessible carbon.

< Experimental Example  3> - Evaluation of hardness of tobacco filter

In order to examine the effect of improving the hardness of the cigarette filter by the plasticizer according to an embodiment of the present invention, the following experiment is performed on the cigarette filter manufactured in Examples 1, 3, 4 and Comparative Example 1. The results are shown in Table 2 below.

The hardness of the cigarette filter is measured by adjusting each cigarette filter at about 22 ° C for about 24 hours and measuring using a filter hardness tester (DHT 200 ^TM , Filtrona) and Equation (1).

[Equation 1]

Filter hardness (%) = [D-a] / D * 100

D is the filter diameter, and a is the distance (in mm) that the filter is pressed down by 300 g.

Plasticizer Addition amount of pure TBPOH (amount of TBPOH aqueous solution added) (% by weight)  After the manufacture, the tobacco filter after 24 hours at room temperature Weight (mg) Circumference (mm) PD (mmH ₂ O) moisture (%) Hardness (%) Comparative Example 1 - 837 24.20 288 9.12 81.6 Example 1 4.4 (11) 900 24.25 289 10.52 88.3 Example 3 6.0 (15) 939 24.20 298 11.11 90.5 Example 4 8.0 (20) 962 24.13 308 11.00 90.7

As can be seen from Table 2, the cigarette filter containing the lyocell tow treated with the plasticizer solution containing TBPOH has improved hardness as compared with Comparative Example 1 in which the plasticizer solution treatment is not performed.

< Experimental Example  4> - Plasticizer solution PH  Controlled assessment

In the plasticizer solution of Example 1, the plasticizer solution had a molar ratio (tetrabutylammonium acetate / hydroxy ion) of tetrabutylammonium acetate to hydroxy ion in the plasticizer solution varied according to Table 3 below and tetrabutylammonium acetate is further added to prepare a plasticizer solution.

8 is a SEM (X 400) photograph of the plasticizer-treated lyocell tow when the molar ratio is 4 in the following Table 3.

The molar acetate /
The molar hydroxide ion (hydroxide ion) pH Impregnation, 25 ℃ 0.25 14 It melts well. 0.5 14 It melts well. One 14 It melts. 2 13-14 It melts. 4 12 It melts slightly when overnight.

Referring to Table 3 and FIG. 8, it can be confirmed that although the molar ratio of tetrabutylammonium acetate / hydroxy ion increased to 2, the firing performance was maintained and PH was somewhat lowered.

This is because the total number of hydroxy ions does not change even if tetrabutylammonium acetate is added.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

Claims (12)

A lyocell tow comprising a plurality of lyocell fibers, and
A plasticizer comprising at least one of quaternary alkylammonium hydroxide or quaternary alkylphosphonium hydroxide and tetrabutylammonium acetate located in the lyocell tow, &Lt; / RTI &gt;
Wherein the plurality of lyocell fibers comprise first lyocell fibers and second lyocell fibers connected to each other by a junction.
The method of claim 1,
Wherein the quaternary alkylammonium hydroxide or quaternary alkylphosphonium hydroxide alkyl group has 1 to 8 carbon atoms.
3. The method of claim 2,
Wherein the alkyl group is an ethyl group, a propyl group, a butyl group, or an octyl group.
delete The method of claim 1,
Wherein the plasticizer component is 1 to 30 wt% of the weight of the lyocell tow.
The method of claim 1,
Wherein the hardness of the cigarette filter is 85% or more.
Preparing a lyocell tow and a plasticizer solution comprising a plurality of lyocell fibers, and
Contacting the plurality of lyocell fibers with a plasticizer solution
Lt; / RTI &gt;
Wherein the plasticizer solution comprises at least one of a quaternary alkylammonium hydroxide or quaternary alkylphosphonium hydroxide and a tetrabutylammonium acetate. .
8. The method of claim 7,
Wherein the quaternary alkylammonium hydroxide or quaternary alkylphosphonium hydroxide has 1 to 8 carbon atoms in the alkyl group.
9. The method of claim 8,
Wherein the alkyl group is an ethyl group, a propyl group, a butyl group, or an octyl group.
8. The method of claim 7,
Wherein the plasticizer component of the plasticizer solution is 1 to 30 wt% of the weight of the lyocell tow.
delete 8. The method of claim 7,
The use of a composition comprising the tetrabutylammonium acetate for at least one of the quaternary alkylammonium hydroxide or quaternary alkylphosphonium hydroxide of the plasticizer solution Wherein the molar ratio is 1-4.

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