JP4166325B2 - Antibacterial deodorant filter and production method thereof - Google Patents

Description

【００５１】
表１から、コロナ放電処理回数が多くなるほどカテキン染着担持量が増すこと、媒染剤については銅媒染剤の方が鉄媒染剤よりも染着担持量が大となることがわかる。
【００５２】
〈消臭試験〉
上記の表１のカテキン染着担持ネットからなる抗菌性フィルターをタバコの煙のフィルターとして用いたときの消臭性能を次のようにして評価した。
【００５３】
・測定対象物：タバコ（マイルドセブン）の煙 ５本／サイクル。
・測定装置：においセンサー（新コスモス電機株式会社製の「ＸＰ−３２９」）およびガス検知管（株式会社ガステック製の「アンモニア− No.３Ｌ」）を使用。
・試験装置：図１に示した閉鎖環境を保持できる消臭試験用装置を用い、１ｍ×１ｍ×１ｍのアクリル板製容器内に、吸煙機、撹拌ファン、およびフィルターを装着した吸引ヘッドをセットした。
【００５４】
・測定内容：タバコを１回の試験に５本ずつ用意し、吸煙機に装着してから、着火する。すみやかに容器を閉鎖し、蓋をしてからちょうど６分経過したところで、スタート時間０分として初期濃度を測定する。５本のタバコのうち、最初の１本がフィルターに達した時点で吸煙機は停止させる。残りのタバコは自然発煙させる。また撹拌ファンは連続運転させる。このような環境下で、スタート時間より３０分後および６０分後のにおい濃度およびアンモニア濃度をそれぞれにおいセンサー、ガス検知管を使って計測する。
【００５５】
・測定結果の評価：喫煙により生ずるガスの濃度を、においセンサーとガス検知管の両方を使って所定の時間に測定する。それらの測定値が各初期値と比べて６０分後にそれぞれどの程度におうかまたはアンモニア濃度がどの程度であるかにつき、初期値との変化率を求める（３０分後変化率 Ｃ₃₀／Ｃ₀ ＝３０分後測定値／初期測定値、６０分後変化率 Ｃ₆₀／Ｃ₀ ＝６０分後測定値／初期測定値）。この測定サイクルを１サイクルとして、繰り返し測定する。
【００５６】
結果を表２に示す。No. 10はカテキンを担持させていないポリプロピレン製のネットを用いた場合、No. 11はコロナ放電処理を行っていないポリプロピレン製のネットのカテキン染色品を用いた場合である。表２においてNo. 10の欄は、C₃₀/C₀=0.68 、C₆₀/C₀=0.49 という意味であり、銅媒染品、鉄媒染品の意味ではない。
【００５７】
【表２】

【００５８】
表２から、ネットとしてコロナ放電処理回数が多いものを用いた場合ほど消臭効果が大きくなる傾向があること、媒染剤については銅媒染剤の方が鉄媒染剤よりも消臭効果が大きいことがわかる。
【００５９】
〈洗浄による染着担持カテキンの減少の程度〉
表１のフィルターのうち銅媒染剤によりカテキンを染着担持させたネットからなるフィルターにつき、繰り返し洗浄後の担持カテキン量を測定した。結果を表３に示す。
【００６０】
【表３】

【００６１】
表３から、繰り返しの洗浄によりカテキン担持量は減少していくものの、コロナ放電処理ネットにカテキンを付着させた場合には、多数回の洗浄後も、なお必要量のカテキンが担持されていることがわかる。フィルターの洗浄頻度を考慮すると、カテキン担持量の減少の度合は、充分に許容範囲にある。
【００６２】
実施例Ｂ
フィルターを構成するネットの繊維材質を下記のように種々変更し、実施例Ａに準じてコロナ放電処理、ついで銅媒染剤によるカテキンの染着担持を行い、３０分後および６０分後のタバコ消臭率を調べた。ＰＰはポリプロピレン繊維、Ｎｙはナイロン繊維である。ただし、No. 30はカキンの染着担持を行っていない。結果を表４に示す。
【００６３】
・No. 30 （経糸）ＰＰ、（緯糸）ＰＰ
・No. 31 （経糸）Ｎｙ、（緯糸）Ｎｙ
・No. 32 （経糸）ＰＰ、（緯糸）Ｎｙ
・No. 33 （経糸）ＰＰ、（緯糸）Ｎｙ：ＰＰ＝２：１
・No. 34 （経糸）ＰＰ、（緯糸）Ｎｙ：ＰＰ＝１：１
【００６４】
【表４】

【００６５】
実施例Ｃ
実施例Ａに準じて、ポリプロピレン（ＰＰ）繊維製の不織布またはアクリル（Ａｃ）繊維製の不織布をまずコロナ放電処理し、ついでカテキン（Cate）を含む処理液で処理し、続いて銅媒染剤または鉄媒染剤の水溶液で処理して、フィルター用の染色不織布を得た。
【００６６】
これらの染色不織布につき、菌数減少率試験により黄色葡萄状球菌Staphylococcus aureus ATCC 6538Pに対する抗細菌活性を調べた。すなわち、滅菌試料不織布に試験菌のブイヨン懸濁液を注加し、密閉容器中で３７℃で１８時間培養後の生菌数を計測し、植菌数に対する増減値を求めた。結果を下記および表５に示す。なお無加工布は標準綿布を使用した。
【００６７】
・植菌数(A) は 2.6×10⁴ 、log A は 4.4
・無加工布菌数(B) は 1.3×10⁷ 、log B は 7.1
・log B - log A = 2.7 > 1.5 （試験は有効）
・増減値 = log C - log A
・増減値差 = (log B - log A) - (log C - log A)
【００６８】
【表５】

【００６９】
【発明の効果】
作用の項でも述べたように、本発明においては、フィルターを構成する繊維としてコロナ放電処理された繊維を用いているので、そのコロナ放電処理された繊維に植物由来のポリフェノール化合物系抗菌消臭性成分を媒染剤の助けを借りた染色的手段により染着担持させたときは、たとえ繊維が難染色性繊維を主体とするような場合であっても、抗菌消臭性成分の担持量が多く、しかも担持された抗菌消臭性成分はフィルターを水分と接触する使い方をしたり水洗を行ったりしても徐々にしか失われず、長期にわたって抗菌消臭力を発揮する。なお抗菌消臭性成分の担持の程度は、媒染剤の種類によって色調は異なるが、染着時の色の濃さによって判定できるので、作業工程管理の点でも便利である。
【図面の簡単な説明】
【図１】消臭試験用装置の説明図である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an antibacterial deodorant filter in which a specific antibacterial deodorant component is dyed and supported on a fiber constituting the filter by a dyeing means, and a method for producing the same.
[0002]
[Prior art]
A filter made of polypropylene fibers (stripes) is widely used as a filter incorporated in the front of an air cleaner or air conditioner.
[0003]
Japanese Patent Application Laid-Open No. 7-148407 (Patent No. 2719088) discloses an antiviral filter in which a filter is impregnated with a virus inactivating agent containing a tea extract as an active ingredient or kneaded in a filter material. Tea extract components are tea polyphenols such as catechins. In the examples, (a) the tea extract component was dissolved in water to make an aqueous solution and then impregnated and adhered to an electret filter; (b) the tea extract component was mixed with polypropylene and melted to form a film Then, an example of cutting and making a nonwoven fabric is given.
[0004]
Japanese Patent Application Laid-Open No. 8-266828 discloses an antiviral filter comprising a dust collection filter and a filter to which a tea extract component is attached. Tea extract components are tea polyphenols such as catechins. Filters to which tea extraction components are attached include electret filters, HEPA filters, high performance filters, medium performance filters, bag filters, and the like.
[0005]
In Japanese Patent Application Laid-Open No. 6-56656 relating to the applicant's application, a cloth-like product made of natural fibers is reacted with tannic acid by contacting with a reaction solution containing tannic acid, and then tartar is further added. The manufacturing method of the external disinfection disinfecting cloth characterized by making it contact with the reaction liquid containing and reacting with tartarite is shown. However, the use of the filter is not intended.
[0006]
In Japanese Patent Application Laid-Open No. 6-173176 relating to the application of the present applicant, a textile product is treated with tannic acid treatment → [fixing treatment with tartarite] → [mordanting reaction with mordant containing mordant] → tea extract. A method for producing a tea-dyed fiber product that is dyed through various steps of dyeing reaction with a dye liquor is shown. [] Is an optional step. In the above process, there is also shown a method in which a mordanting reaction and a staining reaction are simultaneously performed with a mordanting and staining liquid. The material of the fiber product is described as being arbitrary such as natural fibers such as cotton, hemp, silk, wool, or a blended product of these natural fibers and chemical fibers, a woven product, and a knitted product. With regard to applications, there are applications that come into contact with the skin and applications that have fashionability.
[0007]
Japanese Patent Application Laid-Open No. 9-316786, also filed by the present applicant, discloses that (a) a textile product is brought into contact with a dyeing solution containing catechins or an attribute thereof, and then contacted with a mordant containing a mordant. Manufacturing method of textile products, (b) Manufacture of dyed fiber products that simultaneously perform dyeing reaction and mordanting reaction by contacting the textile product with a dyeing and mordant solution containing both catechins or their attributes and a mordant. There is disclosure per law. The material of the textile product is arbitrary, such as natural fibers such as cotton, hemp, silk, wool, etc., chemical fibers such as polyamide-based fibers, or blended products / woven fabrics / knitted products of these natural fibers and chemical fibers. Among these, cotton, hemp and silk are described as being particularly important. In addition to applications that come into contact with the skin and applications that have fashionability, it can be used as an air purifier or an air conditioner filter.
[0008]
[Problems to be solved by the invention]
However, when the tea extract component is mixed with polypropylene as a filter material and melted into a non-woven fabric, that is, in the support method by kneading, smooth fiberization itself is not easy and the fiber surface is exposed. There is a problem that the effect is insufficient because there are few extracted components.
[0009]
When the tea extract component is dissolved in water and made into an aqueous solution and then impregnated and adhered to the filter, that is, in the support method by impregnation, because it has insufficient adhesion and water resistance, it can be used in contact with moisture, There is a problem in that the adhering components are easily lost when the water is washed occasionally.
[0010]
On the other hand, according to the dyeing method of each of the above-mentioned publications proposed by the present applicant, the active ingredients (tannic acid, tea extract components, catechins) are chemically added to the textile product by dyeing reaction and mordanting reaction. There is an advantage that it can be supported. However, although the dyeing and supporting method by these dyeing means is effective when the fiber product is made of natural fibers or polar synthetic fibers, there is a strong demand for further improving antibacterial or deodorizing properties. In particular, when applied to a general-purpose filter made of polypropylene fibers having no polarity, it has been found that the amount of dyeing carried is extremely small and antibacterial or deodorant performance as expected cannot be obtained.
[0011]
Under such a background, the present invention dyes a necessary amount of an active ingredient by a dyeing means regardless of the type of fiber constituting the filter (for example, a fiber containing a hardly dyeable fiber). It is an object of the present invention to provide a filter having excellent antibacterial and deodorant properties and its endurance, and a method for producing such an antibacterial and deodorant filter.
[0012]
[Means for Solving the Problems]
The antibacterial deodorant filter of the present invention uses a fiber subjected to corona discharge treatment as a fiber constituting the filter, and a plant-derived polyphenol compound-based antibacterial deodorant component is added to the mordant as an aid to the corona discharge treated fiber. It is characterized in that it is dyed and supported by dyeing means using
[0013]
The method for producing an antibacterial deodorant filter of the present invention comprises: (a) a plant-derived polyphenol compound-based antibacterial deodorant component after corona discharge treatment of the fiber for constituting the filter; Contact with a dyeing solution containing mordant, and then contact with a mordant solution containing a mordant, or (b) contact with a dyeing and mordant solution containing both a plant-derived polyphenol compound antibacterial deodorant component and a mordant. Thus, the dyeing reaction and the mordanting reaction are performed sequentially or simultaneously.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail below. In the present invention, “antibacterial and deodorant” is used to mean “antibacterial and / or deodorant”. Here, “antibacterial” is used to mean bactericidal, bacteriostatic, antifungal and antiviral properties, and “deodorant” means deodorizing, odor eliminating or removal of harmful gas components. Used in the sense of sex.
[0015]
In the present invention, a fiber for constituting a filter is used as a material for supporting an active ingredient. Examples of the fiber include polypropylene fiber, polyethylene fiber, polyamide (nylon) fiber, acrylic fiber, polyester fiber, polyvinyl chloride fiber, polyvinylidene chloride fiber, vinyl alcohol polymer fiber, and polyurethane fiber. A sheath-core type or bimetal type composite fiber may be used. The fiber may be a fiber internally containing an antibacterial deodorant component. In this case as well, a filter having a particularly preferable antibacterial deodorant property can be obtained by dyeing support by the dyeing means of the present invention. Can do.
[0016]
The fibers may be monofilaments, multifilaments, spun yarns, covering yarns, and the like, and when used as a filter, a woven fabric or net (net), a nonwoven fabric, a knitted fabric or the like is used. The fiber may be a mixture of different fibers having different types or melting points, or a woven or mixed woven body.
[0017]
At least a part of the fibers constituting the filter (for example, 20% or more, 30% or more, about half or more, or the total amount) may be hardly dyeable fibers. One of the features of the present invention is that preferable dyeing and supporting can be achieved even when the filter is composed of hardly dyeable fibers. Here, representative examples of hardly dyeable fibers are polyolefin fibers such as polypropylene and polyethylene, particularly polypropylene fibers. Another example of hardly dyeable fibers is acrylic fibers.
[0018]
In the present invention, it is required that the fibers constituting the filter are subjected to corona discharge treatment. The corona discharge treatment can be performed at any stage until the fiber is used as a filter or after the filter is used.
[0019]
In the corona discharge treatment, for example, an interval of about 0.5 to 0.6 mm is provided between an electrode connected to a high voltage generator and a metal roll, and a high voltage of several thousand to several tens of thousands V is applied at a high frequency of several hundred KC / S. In this method, a high-pressure corona is generated in the gap, and a thin sheet is run in the gap to process the sheet, whereby the surface of the sheet is activated.
[0020]
Since the degree of activation of the fiber surface by the corona discharge treatment varies depending on the voltage and the gap, it is only necessary to find the optimum conditions through preliminary experiments. When there is a shortage in one process, the process may be performed twice or more.
[0021]
As plant-derived polyphenol compound-based antibacterial deodorant components, catechins (including their attribute substances) are particularly important. As catechins, monomeric or oligomeric ones are used (including tephrabin). A particularly important catechin used in the present invention is a tea-derived catechin preparation with an increased concentration of catechins. The main ingredients of tea catechins are epigallocatechin, epigallocatechin gallate, epicatechin, epicatechin gallate, etc. Preparations (especially those containing 20% or more, preferably 25% or more) can be suitably used as they are. Since there are 30%, 50%, 60%, 70%, 80%, 90%, etc. of commercially available tea-derived catechin preparations, it is easy to obtain. In addition, since catechins are contained in various plants other than tea including Asen, catechins derived from those plants can also be used.
[0022]
In addition, tea extract, tannin (acid), saponin, and the like can also be used as plant-derived polyphenol compound-based antibacterial deodorant components. As the tea extract, powdered tea of Ichibancha, Nibancha, and Sanbancha, tea extracts such as deep-boiled rice, burdock, etc., extracts of black tea and oolong tea can be used. As the tannin (acid), commercially available purified tannic acid can be used, and an extract of a high tannic acid-containing natural plant containing a large amount of tannic acid such as pentaploid and gallic or semi-purified product thereof can be used as it is. it can. Among the saponins, tea saponins can be obtained by extracting components containing saponins from tea leaves or tea seeds using an organic solvent or water, and then repeatedly purifying them using means such as column chromatography. Tea saponins include steroidal saponins and triterpenoid saponins, and any of these can be used for the purpose of the present invention. Saponins are also found in a variety of plants other than tea, such as carrots, chixetsu carrots, soybeans, psychos, scallops, loofahs, onjis, yellow peppers, senega, bacmonds, yellowtails, chimo, gohitsu, licorice, sankirai, etc. So saponins from such plants can also be used.
[0023]
In the present invention, the plant-derived polyphenol compound-based antibacterial deodorant component is added to the above-mentioned corona discharge treated fibers (including processed products thereof, that is, woven fabrics or nets, nonwoven fabrics, knitted fabrics, etc.) Is dyed and supported by dyeing means with the help of a mordant. As this method, the following two methods are preferably employed.
[0024]
In the first method, after the corona discharge-treated fiber is brought into contact with the dye solution containing the antibacterial and deodorant components, the dyeing reaction and the mordanting reaction are sequentially performed by bringing the fiber into contact with the mordant solution containing the mordant. It is a method to do.
[0025]
The second method is a method in which a dyeing reaction and a mordanting reaction are simultaneously performed by bringing a fiber subjected to corona discharge treatment into contact with a dyeing and mordant containing both the antibacterial deodorant component and the mordant. It is.
[0026]
In the first method, desizing, scouring, and bleaching are performed as necessary, and then the fiber is first brought into contact with the dye solution containing the antibacterial and deodorant components.
[0027]
Regarding the conditions when the corona discharge-treated fiber is brought into contact with the dye solution containing the above-mentioned antibacterial and deodorant component, the bath ratio is about 7 to 100 times the weight of the fiber, the bath temperature is 40 ° C. to the boiling temperature, the treatment The time is about 10 minutes to 3 hours, and the concentration of the antibacterial and deodorant component is often about 0.2% by weight or more, usually about 1 to 20% by weight, but is not limited to these ranges.
[0028]
After contacting the fiber with a dye solution containing an antibacterial and deodorant component, the fiber is usually brought into contact with a mordant solution containing a mordant without fixing with talcum (antimony potassium tartrate). By selecting the type of mordant, dyed products of various colors can be obtained. In addition, it is preferable to avoid the use of tartar stones because there are problems such as the influence on the skin caused by mucous membrane irritation cannot be ignored and the cost of dyeing is high (although it can be used) In addition, when the antibacterial and deodorant components described above are dyed and supported on the corona discharge treated fiber as in the present invention, it is not necessary to perform a fixing step with tartar.
[0029]
Here, as a mordant, a copper mordant (copper salt), an iron mordant (iron salt of iron acetate, ferrous sulfate, iron nitrate, ferrous acetate, iron acetate, etc.), a calcium mordant (calcium acetate, hydroxide) Calcium, etc.), titanium mordant (titanium salt of organic acid), aluminum mordant (aluminum salt such as aluminum acetate, aluminum sulfate, aluminum chloride, alum, baked alum, potash alum, commercially available aluminum liquid), silver mordant (silver acetate, Silver salt such as silver nitrate), tin mordant (tin salt), zinc mordant (zinc salt), chromium mordant (chromium salt), cobalt mordant (cobalt salt) and the like. Plant ash (wood ash and ash ash) such as camellia ash, sawflower ash, Hisakaki ash, Kunugi ash, Akaza ash and Waseda ash can also be used. These plant ash contains aluminum ions and other metal ions and alkaline substances useful for dyeing.
[0030]
Since the dyeing property varies depending on the kind of mordant, it is preferable to find out which mordant is appropriate by preliminary experiments. An example of a suitable mordant is a copper mordant (copper salt).
[0031]
The bath ratio at the time of mordanting is about 7 to 100 times (especially about 8 to 60 times) the weight of the fiber, the bath temperature is normal temperature to boiling temperature, and the treatment time is often about 10 minutes to 1 hour, It is not limited to this range.
[0032]
After completion of the above steps, after-treatment such as soaping and washing is performed as necessary, and then natural drying or hot air drying is performed.
[0033]
Next, in the second method, the dyeing reaction and the mordanting reaction are simultaneously performed by bringing the fiber into contact with a dyeing and mordant containing both the antibacterial deodorant component and the mordant.
[0034]
In carrying out the second method, a part of the antibacterial deodorant component is used in advance as a dyeing solution and is brought into contact with the fiber, and then the dyeing solution containing both the antibacterial deodorant component and the mordant. It is also possible to employ a method of contacting with the combined mordant liquid. That is, the first method and the second method can be combined.
[0035]
In carrying out the first method or the second method, the fiber may be cationized by bringing it into contact with a pretreatment liquid containing a cationizing agent. As the cationizing agent, various commercially available cationizing agents can be used, and the cationization treatment is usually performed in the presence of an alkali.
[0036]
By carrying out the first or second method or a combination of these to dye and carry an antibacterial deodorant component on the fiber, a desired antibacterial deodorant filter can be obtained. The obtained antibacterial deodorant filter can be used as an air cleaner, an air conditioner filter, a vacuum cleaner filter, or the like.
[0037]
<Action>
In the fibers constituting the filter, depending on the dyeing method using dyeing means, there is a limit to the amount of the antibacterial and deodorant component that is dyed. Especially when the filter is made of fibers containing hardly dyeable fibers such as polyolefin fibers, depending on the dyeing method using dyeing means, very little antibacterial and deodorant components can be dyed even with a mordant. It cannot be deposited and supported, and its antibacterial and deodorant ability is poor.
[0038]
However, in the present invention, a fiber subjected to corona discharge treatment is used as a fiber constituting the filter, and the plant-derived polyphenol compound antibacterial deodorant component is dyed with the help of a mordant into the fiber subjected to the corona discharge treatment. Because it is dyed and supported by the means, the amount of antibacterial and deodorant component carried is large, and the supported antibacterial and deodorant component gradually increases even when the filter is used in contact with moisture or washed with water. It is only lost and exhibits antibacterial and deodorant power over a long period of time. The degree of loading of the antibacterial and deodorant component varies depending on the type of mordant, but can be determined by the color intensity at the time of dyeing, which is convenient in terms of work process management.
[0039]
【Example】
The following examples further illustrate the invention. Hereinafter, “parts” and “%” are expressed on a weight basis. “% Owf” means% by weight based on the fiber.
[0040]
Example A
A net was prepared using warps and wefts twisted from polypropylene monofilaments that have been used as front filters for air cleaners and air conditioners.
[0041]
Corona discharge treatment was performed on this net once, 10, 15, 20, and 25 times on the front and back surfaces under the following conditions.
・ Oscillator: Kasuga Electric Co., Ltd., Model CF-0212 (2KW)
・ Electrode: Wire electrode (1mmφ)
・ Air gap: 2mm from the substrate surface
・ Electricity: 400W
・ Manual type, double-sided treatment ・ Speed: 30cm / 3sec (3 seconds for reciprocation)
[0042]
It seems that it is impractical to perform corona discharge many times, but this is test data when the air gap is wide as 2mm to grasp the trend. By selecting the output and distance in the actual corona discharge treatment, one or several corona discharge treatments are sufficient.
[0043]
As an example of the antibacterial deodorant component, it is derived from a commercially available tea having a catechin content of about 30% including about 10% epigallocatechin, about 15% epigallocatechin gallate, about 2% epicatechin, and about 3% epicatechin gallate. A catechin preparation (hereinafter simply referred to as catechin) was prepared.
[0044]
The net before or after the corona discharge treatment was put into water, heated to 80 ° C. with stirring, stirred at this temperature for about 10 minutes, washed with water and dehydrated.
[0045]
Add 10 parts (10% owf) of the above catechins in water, add some water to make a total of 1200 parts (bath ratio 1:12), and prepare the treatment liquid. The net was put in, heated to about 80 ° C. and stirred for about 30 minutes. After the temperature was turned off, stirring was continued for 60 minutes, followed by washing with water and dehydration.
[0046]
After adding copper sulfate or iron pyroacetate as a mordant to water to make a 3% aqueous solution, 100 parts of the treated net is added to this aqueous solution (bath ratio 1:12) and allowed to blend for about 10 minutes. The temperature was raised to about 90 ° C., and after stirring at this temperature for about 30 minutes, washing with water, dehydration and drying were performed.
[0047]
As a result, a relatively dark catechin dyeing net was obtained, which was used as a filter and subjected to the following test.
[0048]
<Catechin dyeing load>
The relationship between the number of corona discharge treatments and the amount of catechin dyed was investigated. The results are shown in Table 1. No. 0 is a polypropylene net that does not carry catechin (no corona discharge treatment is performed), and No. 1 is a catechin dyed carrying product of a polypropylene net that is not subjected to corona discharge treatment.
[0049]
The amount of catechin was measured using a thermal analyzer. That is, when about 10 mg is collected from the net, applied to a thermal analyzer, and the temperature is raised, catechin starts to burn around 380 ° C. Therefore, the amount of catechin can be obtained by measuring the weight change near that temperature. it can. Since the polypropylene fiber also burns near this temperature, the catechin adhesion amount may be compared and evaluated by the differential heat amount generated by the combustion and the decreasing rate.
[0050]
[Table 1]

[0051]
From Table 1, it can be seen that the greater the number of corona discharge treatments, the greater the amount of catechin dyeing carried, and for the mordant, the copper mordant has a larger amount of dyeing carried than the iron mordant.
[0052]
<Deodorization test>
The deodorizing performance when the antibacterial filter comprising the catechin dyeing support net shown in Table 1 was used as a cigarette smoke filter was evaluated as follows.
[0053]
・ Measurement object: Cigarette (mild seven) smoke 5 cigarettes / cycle.
Measurement device: Odor sensor (“XP-329” manufactured by Shin Cosmos Electric Co., Ltd.) and gas detector tube (“Ammonia-No. 3L” manufactured by Gastec Co., Ltd.) are used.
Test apparatus: Using a deodorization test apparatus capable of maintaining a closed environment shown in FIG. 1, a suction head equipped with a smoke absorber, a stirring fan, and a filter is set in a 1 m × 1 m × 1 m acrylic container. did.
[0054]
・ Measurement content: Prepare 5 cigarettes per test, attach to the smoke evacuator, and ignite. Immediately after 6 minutes have passed since the container was closed and covered, the initial concentration was measured with a start time of 0 minutes. The smoke evacuator is stopped when the first of the five cigarettes reaches the filter. The remaining cigarettes smoke spontaneously. The stirring fan is operated continuously. Under such circumstances, the odor concentration and ammonia concentration after 30 minutes and 60 minutes after the start time are measured using an odor sensor and a gas detection tube, respectively.
[0055]
・ Evaluation of measurement results: The concentration of gas generated by smoking is measured at a predetermined time using both an odor sensor and a gas detector tube. The rate of change from the initial value is determined as to how much the measured values are after 60 minutes compared to the respective initial values or how much the ammonia concentration is (change rate after 30 minutes C ₃₀ / C ₀ = (Measured value after 30 minutes / initial measured value, rate of change after 60 minutes C ₆₀ / C ₀ = measured value after 60 minutes / initial measured value). This measurement cycle is taken as one cycle, and measurement is repeated.
[0056]
The results are shown in Table 2. No. 10 is the case where a polypropylene net not carrying catechin is used, and No. 11 is the case where a catechin-dyed product of a polypropylene net not subjected to corona discharge treatment is used. The column of No. 10 in Table 2 means C ₃₀ / C ₀ = 0.68, C ₆₀ / C ₀ = 0.49, and does not mean copper mordanted product or iron mordanted product.
[0057]
[Table 2]

[0058]
From Table 2, it can be seen that the deodorizing effect tends to increase as the net having a larger number of corona discharge treatments is used, and that for the mordant, the copper mordant has a greater deodorizing effect than the iron mordant.
[0059]
<Degree of decrease in dye-carrying catechin by washing>
Among the filters in Table 1, the amount of supported catechin after repeated washing was measured for a filter comprising a net on which catechin was dyed and supported by a copper mordant. The results are shown in Table 3.
[0060]
[Table 3]

[0061]
From Table 3, the amount of catechin carried decreases with repeated washing, but when catechin is attached to the corona discharge treatment net, the required amount of catechin is still carried after many washings. I understand. Considering the frequency of washing the filter, the degree of decrease in the amount of catechin loaded is sufficiently acceptable.
[0062]
Example B
The fiber material of the net constituting the filter was variously changed as follows, and the corona discharge treatment was carried out according to Example A, followed by catechin dyeing / supporting with a copper mordant, and the tobacco deodorization after 30 minutes and 60 minutes The rate was examined. PP is polypropylene fiber and Ny is nylon fiber. However, No. 30 does not carry the dyeing / supporting of the chicken. The results are shown in Table 4.
[0063]
・ No. 30 (War) PP, (Weft) PP
・ No. 31 (warp) Ny, (weft) Ny
・ No. 32 (War) PP, (Weft) Ny
No. 33 (warp) PP, (weft) Ny: PP = 2: 1
・ No. 34 (warp) PP, (weft) Ny: PP = 1: 1
[0064]
[Table 4]

[0065]
Example C
In accordance with Example A, a polypropylene (PP) fiber nonwoven fabric or an acrylic (Ac) fiber nonwoven fabric is first subjected to corona discharge treatment and then treated with a treatment solution containing catechin (Cate), followed by copper mordant or iron. A dyed nonwoven fabric for a filter was obtained by treatment with an aqueous mordant solution.
[0066]
These dyed nonwoven fabrics were examined for antibacterial activity against Staphylococcus aureus ATCC 6538P by a bacterial count reduction rate test. That is, a bouillon suspension of the test bacteria was poured into a sterilized sample nonwoven fabric, and the number of viable bacteria after 18 hours of culture at 37 ° C. was measured in an airtight container to obtain an increase / decrease value relative to the number of inoculated bacteria. The results are shown below and in Table 5. The unprocessed cloth was a standard cotton cloth.
[0067]
・ Inoculation count (A) is 2.6 × 10 ⁴ , log A is 4.4
・ Unprocessed fungus count (B) is 1.3 × 10 ⁷ and log B is 7.1
Log B-log A = 2.7> 1.5 (test valid)
Increase / decrease value = log C-log A
-Increase / decrease value difference = (log B-log A)-(log C-log A)
[0068]
[Table 5]

[0069]
【The invention's effect】
As described in the section of action, in the present invention, since the fiber subjected to the corona discharge treatment is used as the fiber constituting the filter, the plant-derived polyphenol compound antibacterial deodorant property is used for the fiber subjected to the corona discharge treatment. When dyed and supported by dyeing means with the help of a mordant, the amount of antibacterial deodorant component loaded is large, even if the fiber is mainly dyeable fibers, Moreover, the carried antibacterial deodorant component is only gradually lost even when the filter is used in contact with water or washed with water, and exhibits antibacterial deodorant power over a long period of time. The degree of loading of the antibacterial and deodorant component varies depending on the type of mordant, but can be determined by the color intensity at the time of dyeing, which is convenient in terms of work process management.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a deodorization test apparatus.

Claims (4)

Using fibers treated with corona discharge as the fiber that constitutes the filter, the plant-derived polyphenol compound antibacterial deodorant component is dyed and supported by dyeing means with the help of a mordant. Antibacterial and deodorant filter, characterized by The antibacterial deodorant filter according to claim 1, wherein at least a part of the fibers constituting the filter is a hardly dyeable fiber. 2. The antibacterial deodorant filter according to claim 1, wherein the plant-derived polyphenol compound-based antibacterial deodorant component is a catechin. After the fiber for constituting the filter is subjected to corona discharge treatment, the fiber subjected to the corona discharge treatment is contacted with a dye solution containing (a) a plant-derived polyphenol compound-based antibacterial deodorant component, and then a mordant is contained. Either contact with the mordant solution, or (b) contact the dyeing and mordant solution containing both the plant-derived polyphenol compound-based antibacterial deodorant component and the mordant, so that the dyeing reaction and the mordant reaction are performed sequentially or simultaneously. A method for producing an antibacterial and deodorant filter characterized in that

Images