JP3816423B2 - Colored tobacco filter, method for producing the same, and tobacco having the colored filter - Google Patents

Colored tobacco filter, method for producing the same, and tobacco having the colored filter Download PDF

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JP3816423B2
JP3816423B2 JP2002206456A JP2002206456A JP3816423B2 JP 3816423 B2 JP3816423 B2 JP 3816423B2 JP 2002206456 A JP2002206456 A JP 2002206456A JP 2002206456 A JP2002206456 A JP 2002206456A JP 3816423 B2 JP3816423 B2 JP 3816423B2
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Prior art keywords
filter
colored
plasticizer
colorant
tobacco
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JP2003174862A (en
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英夫 金子
栄一 高瀬
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Mitsubishi Chemical Corp
Mitsubishi Rayon Co Ltd
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Mitsubishi Chemical Corp
Mitsubishi Rayon Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、意匠性に優れた着色たばこフィルター及びその製造方法並びにその着色たばこフィルターを用いたたばこに関する。
【0002】
【従来の技術】
従来、紙巻たばこに使用されているフィルターは、口にくわえることから清潔感を表す白色のフィルターが好まれ、多くのたばこに用いられているが、意匠効果を与えた着色フィルターも特開昭60−98978号公報等で提案されている。即ち、特開昭60−98978号公報にはセルロースアセテート繊維トウを開繊した後、着色料を均一に分散した可塑剤を添着させることにより着色フィルターを得る方法が提案されている。
【0003】
しかしながら、前記の方法では、濃く、カラフルな色彩を施すためには着色料を多量に使用する必要がある。その場合、可塑剤中の着色料は、十分に溶解せず、未溶解物として可塑剤中に存在する場合には、時間と共に未溶解物が沈殿分離してしまう。このような沈殿分離し易い状態の可塑剤をセルロースアセテート繊維トウに添着して作成したフィルターは、未溶解物の存在によりフィルター断面に濃い着色部分とそうでない部分ができ、フィルターの断面に着色斑が生じる。
【0004】
【発明が解決しようとする課題】
本発明の目的は、濃く均一に着色し意匠性に優れた着色たばこフィルターを提供し、またこの着色フィルターを有するたばこを提供することにある。
【0005】
【課題を解決するための手段】
本発明の第1の要旨は、フィルター材に着色料、可塑剤及び着色料と可塑剤に相溶性のある溶剤を含む着色たばこフィルターにあり、本発明の第2の要旨は、フィルター材に、着色料、可塑剤及び着色料と可塑剤に相溶性のある溶剤からなる混合溶液を添着することを特徴とする着色たばこフィルターの製造方法にあり、本発明の第3の要旨は、前記着色たばこフィルターを有するたばこにある。
【0006】
【発明の実施の形態】
以下、本発明の好適な実施の形態について具体的に説明する。
本発明の着色フィルターは、フィルター材に着色料、可塑剤及び着色料と可塑剤に相溶性のある溶剤を含んでいることが必要である。
【0007】
着色料としては、染料、顔料、天然色素等が挙げられるが、本発明の着色フィルターがたばこ用フィルターとして用いることから、口にくわえることを考慮するならば、本発明においては、着色料として、食品衛生法に基づき食品添加物として使用が許可されている食用色素が好適に用いられる。
【0008】
特に、たばこ商品としての価値や意匠性の効果を発現するためには、着色料として、カラフルな色の食用色素、例えば食用黄色4号(Tartrazine)、食用黄色5号(Sunset Yellow FCF)、食用赤色2号(Amaranth)、食用赤色3号(Erythrosine)、食用赤色40号(Allura Red AC)、食用赤色102号(New Coccine)、食用赤色104号(Phoxine)、食用赤色105号(Rose Bengale)、食用赤色106号(Acid Red)、食用青色1号(Brilliant Blue FCF)、食用青色2号(Indigo Carmine)等を用いることが望ましい。また、上記食用色素を組合わせた着色料を用いることにより、色調を変化させ、多色化を図ることができる。
【0009】
本発明においては、着色フィルターにおける着色料の含有率は0.01〜0.1wt%であることが好ましく、より好ましくは0.01〜0.03wt%である。着色料の含有率が0.01wt%未満では、発色が不十分となりやすく、0.1wt%を超えると、たばこ用フィルターとしては色が濃すぎる傾向となる。
【0010】
可塑剤としては、フィルター材を溶解する性質を持ったものであれば特に限定はなく、フィルター材としてセルロースアセテート繊維トウを用いる場合は、アセテート繊維に対する相溶性、常温での硬化作用、貯蔵による変質がなく、異味異臭がなく、煙中への移行が少なく、安価であることから、トリアセチルグリセリンが好ましく用いられる。
【0011】
また、着色料と可塑剤に相溶性のある溶剤としては、エタノール、グリセリン、プロピレングリコール、ブチレングリコール、ポリエチレングリコール、ポリプロピレングリコール等のアルコール類、ポリオール類等が用いられる。特に、着色料における食用色素と同様、食品衛生法に基づく食品添加物であるプロピレングリコールがより好ましい。
【0012】
本発明の着色たばこフィルターを構成するフィルター材は、単繊維の集合体であるトウ、特に繊維に強度があり、適当な可塑剤の適用で品質の安定したフィルターが容易に、高速で巻き上げることができ、経済的である点、また適度な吸湿性があり、たばこの香喫味を損なわないな等たばこ用フィルター材として望ましい性質を備えていることから、セルロースアセテート繊維トウであることが好ましい。さらに、このセルロースアセテート繊維トウからなるフィルター材は、溝付け加工テープの形態をとったものであってもよい。
【0013】
本発明の着色フィルターにおいては、可塑剤によりフィルター材表面が溶解し、フィルター材の構成素材の接触点を接着し三次元の網目構造を形成すると共に、着色料がフィルター材に固着し着色されている。このとき着色料と可塑剤に相溶性のある溶剤を含んでいることにより、着色料と可塑剤が溶剤中に均一に溶解、分散し、濃く均一に着色している。従って、着色料と可塑剤に相溶性のある溶剤が存在せず、着色料と可塑剤のみからなる場合は、着色料が可塑剤中に均一に溶解せず、着色斑が生じ発色効果が不十分となる。
【0014】
そして、本発明の着色フィルターにおいては、着色フィルターの着色の程度ををabクロマ値で表すと、abクロマ値が10〜60であることが好ましく、20〜40であることがより好ましい。ここでabクロマ値は、L、a、b表色系において彩度に近似的に相関する量であり、下記式で表される。この数値が大きいほど白みを帯びていない度合いが強いことを示す。
abクロマ値(Cab)=(a*2+b*2)1/2
明るさの観点からは、低い方が好ましく、色彩を強調する観点からは、高い方が好ましいが、abクロマ値が10未満では、白みが強調されたものとなりやすく、60を超えると、明るさよりは暗さが強調される傾向となりやすい。
【0015】
次に、本発明の着色たばこフィルターの製造方法の一例について説明する。
本発明の着色たばこフィルターは、フィルター材に、着色料、可塑剤及び着色料と可塑剤に相溶性のある溶剤からなる混合溶液を添着することにより得られる。
【0016】
混合溶液の添着の方法としては、直接噴霧若しくはコーターロールを介してのフェルトからの供給等を用いることができる。着色料、可塑剤及び着色料と可塑剤に相溶性のある溶剤の配合割合を決定する上で重要となるのは、実用的な機能として本来たばこフィルターが有しているフィルター硬度に影響を及ぼす可塑剤の添加量である。例えば、可塑剤としてトリアセチルグリセリンを用いた場合の添加量は、適度なフィルター硬度を保つ上でフィルター材の繊維トウに対して好ましくは2〜20wt%、より好ましくは5〜15wt%である。混合溶液中の溶剤、着色料の割合も上記数値に基づいて決定する必要がある。
【0017】
最終製品であるたばこフィルターとしたときの喫味や硬度が満足しうる範囲とするためには、可塑剤に対する着色料、溶剤の割合は少ないほうが好ましい。可塑剤に対する着色料と溶剤の割合は、好ましくは5〜50wt%、より好ましくは20〜40wt%である。
【0018】
混合溶液の製造方法としては、例えばビーカー等の容器に所定量の着色料と溶剤を入れ、均一に溶解するまで攪拌し着色原液を作成する。次に所定量の可塑剤の入ったビーカー等容器にこの着色原液を徐々に入れて均一に分散溶解させ、着色混合溶液を得る。なお、攪拌速度、攪拌時間等の撹拌条件等は特に制限はない。
【0019】
次に、得られた着色混合溶液をフィルタープラグ製造装置であるプラグマシンの可塑剤供給系タンクに投入する。着色混合溶液は、タンク底部よりギヤポンプにより可塑剤アプリケーター部へと供給される。一方、プラグマシンに供給されるフィルター材、例えばセルロースアセテート繊維トウは、2組のロール対の間で引き伸ばされて、短繊維同士が分離した嵩高い状態に処理され、その後、可塑剤アプリケーター内で着色混合溶液を噴霧又はフェルト等を通じて直接又は間接的に均一に繊維トウに添着される。
【0020】
着色した繊維トウは、その後一定の径になるように集束され巻管部にて円棒状とする。円棒状となったトウの外周に巻取紙を巻いて所定の長さに切断することにより、本発明の着色フィルター材からなる着色フィルタープラグが製造される。このプラグは適宜長さにカットされ、図1に示すようなたばこフィルターとする。
【0021】
また、可塑剤を均一に添着した後、所定の幅に集束した状態で溝付け加工用の加熱ロールに通して、溝付け加工したテープ状物に可塑化することもできる。この場合、開繊トウを円棒状に集束する際に、この溝付け加工したテープ状物で包み込むように巻き上げることで、フィルター外周部が着色したフィルターを得ることもできる。テープ状に可塑化することで繊維間が圧密化され、通常のフィルターと比較し、着色斑は更に改善されたものとなり、また色調は濃いものとなる。
【0022】
また、本発明の着色たばこフィルターは、着色されていない他のたばこフィルターと組み合わせて使用することもできる。例えば、図2に示すように、シースコア構造のたばこフィルターとして、シース部が繊維トウからなるフィルター材3、コア部が繊維トウからなるフィルター材4であり、シース部のフィルター材3とコア部のフィルター材4の一方又は両方に着色フィルター材を用いてもよい。
【0023】
また、図3に示すように繊維トウを溝付け加工したテープ状物のフィルター材5でコア部の繊維トウからなるフィルター材6を包み込んだ構造として、その一方又はその両方に着色フィルター材を用いてもよい。さらにフィルターの濾過率を高めるために木材パルプ繊維からなるシート状物と繊維トウからなる着色フィルター材を重ね合わせて溝付け加工し複合テープ状としたものを円棒状に集束してもよい。
【0024】
本発明の着色たばこフィルターを有するたばこは、上述した製造方法により得られた着色フィルターを所定の長さに切断したフィルターチップと、巻紙に包まれたたばこ刻み葉のロッドとをチップペーパーにて接続することにより、着色フィルターの付いたたばこが得られる。なお、着色たばこフィルターを有するたばこの製造方法は、前記方法に限られるものではない。かくして得られた着色たばこフィルターを有するたばこは、きわめて意匠性に優れたものである。
【0025】
【実施例】
以下、本発明を実施例により具体的に説明する。なお、実施例中、着色フィルター中の着色料、可塑剤、溶剤の含有量、測色値の測定は、以下の方法に拠った。なお、各々定量した含有量は、サンプルの重量に対する割合として表した。
【0026】
(着色料含有量)
着色フィルターをアセトン95%+水5%の混合溶液50mlに溶解させ、遠心分離(10000回転/分、15分、4℃)にて、不溶分(酸化チタン)を除去する。この溶液のUV測定を行い、各着色料のλmaxにおける吸光度から定量を行った。また、検量線は使用した各着色料をアセトンと少量の水で溶解した標準液を用いて作成した。
【0027】
(可塑剤含有量)
着色フィルターをアネトール0.25g/エタノール1Lの割合で作成した抽出溶媒50mlに入れ、超音波洗浄器にて30分間振とうし、可塑剤を抽出した。得られた抽出溶液のガスクロ測定を行い、ピーク面積から定量を行った。また、検量線は各可塑剤の試薬を用いて作成した。
【0028】
(溶剤含有量)
着色フィルターを約0.05g秤量し、アセトンで溶解させ、正確に10mlとした。得られた溶液のガスクロマトグラフ測定を行い、ピーク面積から定量を行った。また、検量線は各溶剤の試薬を用いて作成した。
【0029】
(abクロマ値)
JIS Z8722、JIS Z8729、JIS Z8730に基づき、着色フィルターについて日本電色工業(株)製デジタル測色色差計ND−300Aを用い、L、a、bを測定し、下記式を用いて計算した。
abクロマ値(Cab)=(a*2+b*2)1/2
【0030】
(実施例1〜3)
着色料として表1に示すキリヤ化学(株)製の食用色素、可塑剤としてトリアセチルグリセリン、溶剤としてプロピレングリコールを用い、各種配合割合にて着色混合溶液を作成した。次にベースのフィルター材として単繊維繊度4.4dtex、総繊度44,000dtexのセルロースアセテート繊維トウを用い、プラグマシンにてトウを開繊した後に、表1に示す着色混合溶液を可塑剤タンクよりギヤポンプにより定量供給し、図1に示すような構造の、円周24.2mm、長さ120mmの着色したフィルタープラグを製造した。このフィルタープラグから得られる着色フィルターは、いずれも濃色で均一に着色されたフィルターであった。得られた着色フィルター中の着色料、可塑剤、溶剤の含有量及び着色状態の測定結果を表1に示す。
【0031】
(比較例1〜3)
溶剤のプロピレングリコールを用いない以外は、実施例1〜3と同様の条件でフィルタープラグを製造した。このフィルタープラグから得られる着色フィルターは、いずれも淡色で着色斑の目立つフィルターであった。得られた着色フィルター中の着色料、可塑剤、溶剤の含有量及び着色状態の測定結果を表1に示す。
【0032】
【表1】

Figure 0003816423
【0033】
【発明の効果】
本発明の着色フィルターは、溶剤により着色料が均一に溶解した可塑剤を添着しているため、使用する着色料は少量でも濃い色調を発現することができ、カラフルな着色を施すことにより色彩的な意匠性を有し、消費者の視覚に訴えかける差別化されものである。また、着色料が可塑剤中に均一に溶解していることから、たばこフィルター製造の際に可塑剤を攪拌し続ける必要がないため、生産性よく製造することができる。さらに、本発明の着色フィルターからなるフィルターの付いたたばこは、意匠性、ファッション性にも優れたものである。
【図面の簡単な説明】
【図1】本発明の着色たばこフィルターの一例の断面図である。
【図2】本発明の着色たばこフィルターの他の例の断面図である。
【図3】本発明の着色たばこフィルターの他の例の断面図である。
【符号の説明】
1 繊維トウからなる着色フィルター材
2 巻取紙
3 シース部の繊維トウからなるフィルター材
4 コア部の繊維トウからなるフィルター材
5 溝付け加工テープ状物からなるフィルター材
6 繊維トウからなるフィルター材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a colored tobacco filter having excellent design properties, a method for producing the same, and a tobacco using the colored tobacco filter.
[0002]
[Prior art]
Conventionally, a filter used for cigarettes is a white filter expressing cleanliness because it is added to the mouth, and is used for many cigarettes. -98978 and the like. That is, JP-A-60-98978 proposes a method for obtaining a colored filter by opening a cellulose acetate fiber tow and then attaching a plasticizer in which a colorant is uniformly dispersed.
[0003]
However, in the above-described method, it is necessary to use a large amount of colorant in order to give a dark and colorful color. In that case, the colorant in the plasticizer is not sufficiently dissolved, and when it is present in the plasticizer as an undissolved material, the undissolved material is precipitated and separated with time. A filter made by attaching a plasticizer in such a state that it is easy to precipitate and separate to cellulose acetate fiber tow has dark colored parts on the filter cross section due to the presence of undissolved matter, and the cross section of the filter is colored. Spots appear.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to provide a colored tobacco filter that is dark and uniformly colored and excellent in design, and also provides a tobacco having this colored filter.
[0005]
[Means for Solving the Problems]
The first gist of the present invention is a colored tobacco filter containing a colorant, a plasticizer and a colorant and a solvent compatible with the plasticizer in the filter material, and the second gist of the present invention is a filter material, The present invention provides a method for producing a colored tobacco filter, comprising adding a colorant, a plasticizer, and a mixed solution comprising a solvent compatible with the colorant and the plasticizer, and the third gist of the present invention is the colored tobacco Tobacco with filter.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be specifically described.
The colored filter of the present invention needs to contain a colorant, a plasticizer, and a solvent compatible with the colorant and the plasticizer in the filter material.
[0007]
Examples of the colorant include dyes, pigments, natural pigments and the like, but since the colored filter of the present invention is used as a filter for cigarettes, considering that it is added to the mouth, in the present invention, as a colorant, Food dyes that are permitted to be used as food additives based on the Food Sanitation Law are preferably used.
[0008]
In particular, in order to develop the value and design effect as a tobacco product, as a coloring agent, edible pigments of colorful colors, for example, Food Yellow 4 (Tartrazine), Food Yellow 5 (Sunset Yellow FCF), Food Red No. 2 (Amaranth), Edible Red No. 3 (Erythrosine), Edible Red No. 40 (Allura Red AC), Edible Red No. 102 (New Coccine), Edible Red No. 104 (Phoxine), Edible Red No. 105 (Rose Bengal) It is desirable to use Food Red 106 (Acid Red), Food Blue 1 (Brilliant Blue FCF), Food Blue 2 (Indigo Carmine), and the like. In addition, by using a colorant that is a combination of the above-mentioned food dyes, it is possible to change the color tone and increase the number of colors.
[0009]
In this invention, it is preferable that the content rate of the coloring agent in a coloring filter is 0.01-0.1 wt%, More preferably, it is 0.01-0.03 wt%. If the content of the colorant is less than 0.01 wt%, color development tends to be insufficient, and if it exceeds 0.1 wt%, the color tends to be too dark for a cigarette filter.
[0010]
The plasticizer is not particularly limited as long as it has the property of dissolving the filter material. When cellulose acetate fiber tow is used as the filter material, compatibility with acetate fiber, curing action at room temperature, alteration by storage Triacetylglycerin is preferably used because it has no bad taste, no off-flavor, no shift to smoke, and is inexpensive.
[0011]
Examples of the solvent compatible with the colorant and the plasticizer include alcohols such as ethanol, glycerin, propylene glycol, butylene glycol, polyethylene glycol, and polypropylene glycol, and polyols. In particular, propylene glycol, which is a food additive based on the Food Sanitation Law, is more preferable, as is the case with food colors in colorants.
[0012]
The filter material constituting the colored cigarette filter of the present invention is a tow that is an aggregate of single fibers, particularly fibers, and a filter with stable quality can be easily wound at high speed by applying an appropriate plasticizer. It is preferable to use cellulose acetate fiber tow because it has desirable properties as a filter material for tobacco, such as being economical and economical, having a suitable hygroscopic property, and not losing the flavor of tobacco. Furthermore, the filter material made of cellulose acetate fiber tow may take the form of a grooved tape.
[0013]
In the colored filter of the present invention, the surface of the filter material is dissolved by the plasticizer, the contact points of the constituent materials of the filter material are adhered to form a three-dimensional network structure, and the colorant is fixed and colored on the filter material. Yes. At this time, since the colorant and the plasticizer contain a solvent compatible with the colorant and the plasticizer, the colorant and the plasticizer are uniformly dissolved and dispersed in the solvent, and the color is densely and uniformly colored. Therefore, when there is no solvent compatible with the colorant and the plasticizer, and only the colorant and the plasticizer are used, the colorant is not uniformly dissolved in the plasticizer, and colored spots are generated, resulting in a coloring effect. It becomes insufficient.
[0014]
And in the colored filter of this invention, when the coloring degree of a colored filter is represented by ab chroma value, it is preferable that ab chroma value is 10-60, and it is more preferable that it is 20-40. Here, the ab chroma value is an amount that is approximately correlated with the saturation in the L * , a * , and b * color systems, and is represented by the following equation. The larger this value is, the stronger the degree of no whiteness.
ab chroma value (C * ab) = (a * 2 + b * 2 ) 1/2
From the viewpoint of brightness, a lower value is preferable, and from a viewpoint of enhancing color, a higher value is preferable. However, when the ab chroma value is less than 10, whiteness tends to be emphasized. The darkness is more likely to be emphasized.
[0015]
Next, an example of the manufacturing method of the colored tobacco filter of the present invention will be described.
The colored cigarette filter of the present invention can be obtained by adhering to a filter material a mixed solution comprising a colorant, a plasticizer, and a solvent compatible with the colorant and the plasticizer.
[0016]
As a method for attaching the mixed solution, direct spraying or feeding from a felt through a coater roll can be used. An important factor in determining the blending ratio of colorants, plasticizers and solvents compatible with the colorants and plasticizers is to affect the filter hardness of the original tobacco filter as a practical function. This is the amount of plasticizer added. For example, when triacetylglycerin is used as a plasticizer, the amount added is preferably 2 to 20 wt%, more preferably 5 to 15 wt% with respect to the fiber tow of the filter material in order to maintain an appropriate filter hardness. It is necessary to determine the ratio of the solvent and the colorant in the mixed solution based on the above numerical values.
[0017]
In order to make the taste and hardness of the final product tobacco filter satisfactory, it is preferable that the ratio of the colorant and the solvent to the plasticizer is small. The ratio of the colorant and the solvent relative to the plasticizer is preferably 5 to 50 wt%, more preferably 20 to 40 wt%.
[0018]
As a method for producing the mixed solution, for example, a predetermined amount of a coloring agent and a solvent are put in a container such as a beaker, and stirred until it is uniformly dissolved to prepare a colored stock solution. Next, this colored undiluted solution is gradually put into a beaker or the like containing a predetermined amount of plasticizer, and dispersed and dissolved uniformly to obtain a colored mixed solution. The stirring conditions such as the stirring speed and stirring time are not particularly limited.
[0019]
Next, the obtained colored mixed solution is put into a plasticizer supply system tank of a plug machine which is a filter plug manufacturing apparatus. The colored mixed solution is supplied from the bottom of the tank to the plasticizer applicator by a gear pump. On the other hand, the filter material supplied to the plug machine, such as cellulose acetate fiber tow, is stretched between two pairs of rolls and processed into a bulky state in which short fibers are separated from each other, and then in a plasticizer applicator. The colored mixed solution is uniformly or indirectly attached to the fiber tow through spraying or felting.
[0020]
The colored fiber tows are then converged so as to have a constant diameter and are formed into a rod shape at the winding tube. A colored filter plug made of the colored filter material of the present invention is manufactured by winding a winding paper around the outer circumference of the tow in the shape of a rod and cutting it into a predetermined length. The plug is appropriately cut to a tobacco filter as shown in FIG.
[0021]
Further, after the plasticizer is uniformly applied, it can be passed through a grooving heating roll in a state of being converged to a predetermined width to be plasticized into a grooved tape. In this case, when converging the spread tow into a circular bar shape, it is possible to obtain a filter in which the outer peripheral portion of the filter is colored by wrapping it up so as to be wrapped with the grooved tape-like material. By plasticizing into a tape shape, the space between the fibers is consolidated, and the colored spots are further improved and the color tone is darker than that of a normal filter.
[0022]
The colored tobacco filter of the present invention can also be used in combination with other uncolored tobacco filters. For example, as shown in FIG. 2, as a cigarette filter having a sea core structure, the sheath part is a filter material 3 made of fiber tow, and the core part is a filter material 4 made of fiber tow, and the sheath part filter material 3 and the core part. A colored filter material may be used for one or both of the filter materials 4.
[0023]
Further, as shown in FIG. 3, a filter material 5 made of a fiber tow of a core portion is wrapped with a filter material 5 of a tape-like material obtained by grooving fiber tows, and a colored filter material is used for one or both of them. May be. Further, in order to increase the filtration rate of the filter, a sheet-like material made of wood pulp fibers and a colored filter material made of fiber tow may be overlapped and grooved to form a composite tape shape that may be converged into a rod shape.
[0024]
The cigarette having the colored cigarette filter of the present invention is obtained by connecting a filter chip obtained by cutting the colored filter obtained by the above-described manufacturing method into a predetermined length and a rod of tobacco leaf wrapped in a wrapping paper with a chip paper. By doing so, a cigarette with a colored filter is obtained. In addition, the manufacturing method of the tobacco which has a colored tobacco filter is not restricted to the said method. The cigarette having the colored cigarette filter thus obtained is extremely excellent in design.
[0025]
【Example】
Hereinafter, the present invention will be specifically described by way of examples. In the examples, the colorant, plasticizer, solvent content, and colorimetric values in the color filter were measured according to the following methods. Each quantified content was expressed as a ratio to the weight of the sample.
[0026]
(Colorant content)
The colored filter is dissolved in 50 ml of a mixed solution of 95% acetone + 5% water, and insoluble matter (titanium oxide) is removed by centrifugation (10,000 rpm / 15 minutes, 4 ° C.). This solution was subjected to UV measurement and quantified from the absorbance at λmax of each colorant. A calibration curve was prepared using a standard solution in which each colorant used was dissolved in acetone and a small amount of water.
[0027]
(Plasticizer content)
The colored filter was placed in 50 ml of an extraction solvent prepared at a ratio of 0.25 g of anethole / 1 L of ethanol, and shaken with an ultrasonic cleaner for 30 minutes to extract the plasticizer. The obtained extraction solution was subjected to gas chromatography measurement and quantified from the peak area. Moreover, the calibration curve was created using the reagent of each plasticizer.
[0028]
(Solvent content)
About 0.05 g of the colored filter was weighed and dissolved with acetone to make exactly 10 ml. The obtained solution was subjected to gas chromatographic measurement and quantified from the peak area. Moreover, the calibration curve was created using the reagent of each solvent.
[0029]
(Ab chroma value)
Based on JIS Z8722, JIS Z8729, and JIS Z8730, L * , a * , and b * are measured using a digital colorimetric color difference meter ND-300A manufactured by Nippon Denshoku Industries Co., Ltd. for the coloring filter, and the following formula is used. Calculated.
ab chroma value (C * ab) = (a * 2 + b * 2 ) 1/2
[0030]
(Examples 1-3)
Colored mixed solutions were prepared at various blending ratios using food dyes manufactured by Kiriya Chemical Co., Ltd. as colorants, triacetyl glycerin as a plasticizer, and propylene glycol as a solvent. Next, a cellulose acetate fiber tow having a single fiber fineness of 4.4 dtex and a total fineness of 44,000 dtex was used as a base filter material, and after opening the tow with a plug machine, the colored mixed solution shown in Table 1 was transferred from the plasticizer tank. A fixed amount was supplied by a gear pump, and a colored filter plug having a structure as shown in FIG. 1 and having a circumference of 24.2 mm and a length of 120 mm was produced. The colored filters obtained from this filter plug were all dark and uniformly colored filters. Table 1 shows the measurement results of the colorant, plasticizer, solvent content and color state in the obtained colored filter.
[0031]
(Comparative Examples 1-3)
Filter plugs were produced under the same conditions as in Examples 1 to 3 except that the solvent propylene glycol was not used. The colored filters obtained from this filter plug were all light-colored and noticeable colored spots. Table 1 shows the measurement results of the colorant, plasticizer, solvent content and color state in the obtained colored filter.
[0032]
[Table 1]
Figure 0003816423
[0033]
【The invention's effect】
Since the color filter of the present invention is attached with a plasticizer in which the colorant is uniformly dissolved by a solvent, the colorant to be used can express a deep color tone even in a small amount, and can be colored by applying colorful color. It has a unique design and is differentiated to appeal to consumers' vision. Further, since the colorant is uniformly dissolved in the plasticizer, it is not necessary to continuously stir the plasticizer during the manufacture of the tobacco filter, so that it can be manufactured with high productivity. Furthermore, the cigarette with the filter comprising the colored filter of the present invention is excellent in design and fashion.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an example of a colored tobacco filter of the present invention.
FIG. 2 is a cross-sectional view of another example of the colored tobacco filter of the present invention.
FIG. 3 is a cross-sectional view of another example of the colored tobacco filter of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Colored filter material which consists of fiber tows 2 Winding paper 3 Filter material which consists of fiber tows of a sheath part 4 Filter material which consists of fiber tows of a core part 5 Filter material which consists of a grooved tape-like material 6 Filter material which consists of fiber tows

Claims (9)

フィルター材に着色料、可塑剤及び着色料と可塑剤に相溶性のある溶剤を含む着色たばこフィルター。  A colored tobacco filter containing a colorant, a plasticizer, and a solvent compatible with the colorant and the plasticizer in the filter material. 着色料の含有率が0.01〜0.1wt%である請求項1に記載の着色たばこフィルター。  The colored tobacco filter according to claim 1, wherein the content of the colorant is 0.01 to 0.1 wt%. abクロマ値が10〜60である請求項1又は2に記載の着色たばこフィルター。  The colored tobacco filter according to claim 1 or 2, wherein the ab chroma value is 10 to 60. フィルター材がセルロースアセテート繊維トウである請求項1〜3のいずれか一項に記載の着色たばこフィルター。The colored tobacco filter according to any one of claims 1 to 3 , wherein the filter material is cellulose acetate fiber tow. 着色料が食用色素、可塑剤がトリアセチルグリセリン、溶剤がプロピレングリコールである請求項4に記載の着色たばこフィルター。The colored tobacco filter according to claim 4 , wherein the colorant is an edible dye, the plasticizer is triacetylglycerin, and the solvent is propylene glycol. フィルター材に、着色料、可塑剤及び着色料と可塑剤に相溶性のある溶剤からなる混合溶液を添着することを特徴とする着色たばこフィルターの製造方法。  A method for producing a colored tobacco filter, comprising attaching a colorant, a plasticizer, and a mixed solution composed of a solvent compatible with the colorant and the plasticizer to the filter material. フィルター材として、セルロースアセテート繊維トウを用いる請求項6に記載の着色たばこフィルターの製造方法。The method for producing a colored tobacco filter according to claim 6 , wherein cellulose acetate fiber tow is used as the filter material. 着色料として食用色素、可塑剤としてトリアセチルグリセリン、溶剤としてプロピレングリコールを用いる請求項7に記載の着色たばこフィルターの製造方法。The method for producing a colored tobacco filter according to claim 7 , wherein food coloring is used as a colorant, triacetylglycerin is used as a plasticizer, and propylene glycol is used as a solvent. 請求項1〜5のいずれか一項に記載の着色たばこフィルターを有するたばこ。A tobacco having the colored tobacco filter according to any one of claims 1 to 5.
JP2002206456A 2001-10-02 2002-07-16 Colored tobacco filter, method for producing the same, and tobacco having the colored filter Expired - Fee Related JP3816423B2 (en)

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GB0713905D0 (en) 2007-07-17 2007-08-29 British American Tobacco Co Cellulose acetate thread in filter
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CN103753988B (en) * 2013-12-31 2016-08-24 上海染料研究所有限公司 A kind of method that food coloring typography prepares colorized cigarette paper
CN108095189B (en) * 2018-01-25 2023-07-11 中国烟草总公司郑州烟草研究院 Skin-core type water-retaining filter stick and preparation method thereof

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