JP2009242299A - Antibacterial paper - Google Patents

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JP2009242299A
JP2009242299A JP2008090965A JP2008090965A JP2009242299A JP 2009242299 A JP2009242299 A JP 2009242299A JP 2008090965 A JP2008090965 A JP 2008090965A JP 2008090965 A JP2008090965 A JP 2008090965A JP 2009242299 A JP2009242299 A JP 2009242299A
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antibacterial
paper
chlorhexidine gluconate
antibacterial effect
effect
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Miki Yasuno
未樹 安野
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Mitsubishi Paper Mills Ltd
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Mitsubishi Paper Mills Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an antibacterial paper in which antibacterial benefit is high, and which excels in the sustention of the antibacterial benefit, and has little discoloration. <P>SOLUTION: The antibacterial paper is characterized by including gluconic acid chlorhexidine of at least 0.005 g/m<SP>2</SP>, and further desirably including gluconic acid chlorhexidine of 0.005-0.03 g/m<SP>2</SP>. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、抗菌効果が高く、また、抗菌効果の持続性に優れ、且つ、変色の少ない抗菌紙に関するものである。   The present invention relates to an antibacterial paper that has a high antibacterial effect, is excellent in durability of the antibacterial effect, and has little discoloration.

抗菌効果を有する紙製品は、医療や介護の現場、また一般家庭においてもニーズが高い。紙に抗菌性能を付与する際、抗菌繊維の練り込みなども手段の一つであるが、操業性やコストを考慮すると、抗菌剤を外添するという方法が最も簡易である。   Paper products having an antibacterial effect are in high demand at medical and nursing homes and in general households. When imparting antibacterial performance to paper, kneading of antibacterial fibers is one of the means, but considering the operability and cost, the method of externally adding an antibacterial agent is the simplest.

抗菌剤の種類は、無機系抗菌剤と有機系抗菌剤の2種類に大別される。一般に紙用途の場合、直接肌や粘膜に触れる可能性があるので、抗菌剤の選択では安全性が最も重要視される。   The types of antibacterial agents are roughly classified into two types: inorganic antibacterial agents and organic antibacterial agents. In general, in the case of paper use, there is a possibility of directly touching the skin and mucous membranes, so safety is regarded as the most important in the selection of antibacterial agents.

食品用途などに使われ、比較的安全性の高い有機系抗菌剤として、安息香酸類(例えば、特許文献1参照)やプロピオン酸類(例えば、特許文献2参照)、デヒドロ酢酸類(例えば、特許文献3参照)などがあるが、これらの抗菌剤は経時や温度など環境の変化によって抗菌成分が揮発してしまい、抗菌効果が安定しないという問題がある。また、使用する有機系抗菌剤によっては、高温の環境下で変色が見られるものが多い。   As organic antibacterial agents that are used for foods and the like and have relatively high safety, benzoic acids (for example, see Patent Document 1), propionic acids (for example, see Patent Document 2), dehydroacetic acids (for example, Patent Document 3) However, these antibacterial agents have a problem that the antibacterial components are volatilized due to environmental changes such as aging and temperature, and the antibacterial effect is not stable. In addition, depending on the organic antibacterial agent used, there are many that are discolored in a high temperature environment.

一方、無機系の抗菌剤としては、銀、亜鉛、銅などの化合物が多く使われている(例えば、特許文献4参照)。無機系の抗菌剤は安全性や効果の持続性が高いが、製造時における排水中への金属イオンの流出も懸念される。また、イオン特有の色が製品に着色することもある。   On the other hand, many compounds such as silver, zinc and copper are used as inorganic antibacterial agents (see, for example, Patent Document 4). Inorganic antibacterial agents have high safety and long-lasting effects, but there is a concern that metal ions may flow out into the wastewater during production. In addition, a color peculiar to ions may be colored on the product.

以上のように、抗菌性能の持続性、着色性、また製造時の環境負荷の点で、従来の技術では満足できるものが存在しなかった。
特開平11−299432号公報 特開平5−32512号公報 特開2005−068095号公報 特開2005−133号公報
As described above, none of the conventional techniques are satisfactory in terms of durability of antibacterial performance, colorability, and environmental load during production.
JP 11-299432 A JP-A-5-32512 Japanese Patent Laying-Open No. 2005-068095 JP-A-2005-133

本発明が解決しようとする課題は、高い抗菌効果を持ち、抗菌効果の持続性に優れた抗菌紙に関するものである。さらに、加えて変色の少ない抗菌紙に関するものである。   The problem to be solved by the present invention relates to an antibacterial paper having a high antibacterial effect and an excellent durability of the antibacterial effect. Furthermore, it relates to an antibacterial paper with little discoloration.

本発明者は、上記の課題を解決すべく鋭意研究を行った結果、本発明の抗菌紙を発明するに至った。本発明は、0.005g/m2以上のグルコン酸クロルヘキシジンを含有していることを特徴とする抗菌紙である。 As a result of intensive studies to solve the above problems, the present inventor has invented the antibacterial paper of the present invention. The present invention is an antibacterial paper containing 0.005 g / m 2 or more of chlorhexidine gluconate.

グルコン酸クロルヘキシジンを0.005〜0.03g/m2含有すると好ましい。 It is preferable to contain 0.005 to 0.03 g / m 2 of chlorhexidine gluconate.

本発明により、高い抗菌効果を持ち、その抗菌効果を保持することが可能である、グルコン酸クロルヘキシジンを0.005g/m2以上含有する抗菌紙、さらに、高温条件下における変色が少ない、グルコン酸クロルヘキシジンを0.005〜0.03g/m2含有した変色の少ない抗菌紙を提供することが出来る。 According to the present invention, an antibacterial paper containing 0.005 g / m 2 or more of chlorhexidine gluconate having a high antibacterial effect and capable of maintaining the antibacterial effect, and further, gluconic acid having little discoloration under high temperature conditions An antibacterial paper containing 0.005 to 0.03 g / m 2 of chlorhexidine and having little discoloration can be provided.

以下、本発明を詳細に説明する。本発明の目的は、抗菌効果と抗菌効果の持続性に優れた変色の少ない抗菌紙を提供するものである。そして、本発明者が鋭意検討した結果、グルコン酸クロルヘキシジンを含有させ、さらにその含有量を調節することで、抗菌効果と抗菌効果の持続性に優れ、さらに加えて、変色の少ない抗菌紙が提供可能であることを見出した。   Hereinafter, the present invention will be described in detail. An object of the present invention is to provide an antibacterial paper having excellent antibacterial effect and durability of the antibacterial effect and having less discoloration. As a result of intensive studies by the present inventor, by adding chlorhexidine gluconate and adjusting the content thereof, the antibacterial effect and the durability of the antibacterial effect are excellent, and in addition, an antibacterial paper with less discoloration is provided. I found it possible.

安全性、抗菌効果が高く、抗菌効果の持続性に優れた抗菌剤として、銀、銅、亜鉛等の化合物を中心とした無機抗菌剤が一般的に知られている。例えば、無機系抗菌剤として、銀、銅、亜鉛等の金属を無機物に担持したものがあるが、紙に付与する際はバインダーが必要となり、ティッシュやワイパーなどに適用する場合は紙の風合いを損ねる可能性がある。また、金属イオンの水溶液を塗布・含浸させる方法もあるが、金属イオンによる紙支持体の着色が懸念される。さらに、これら金属を含む化合物の使用は、製造の際、排水中に金属イオンが流出する可能性があり、環境負荷の面で好ましくない。   As an antibacterial agent having high safety and antibacterial effect and having excellent antibacterial effect, inorganic antibacterial agents mainly composed of compounds such as silver, copper and zinc are generally known. For example, inorganic antibacterial agents include silver, copper, zinc, and other metals supported on inorganic substances. However, when applied to paper, a binder is required, and when applied to tissues, wipers, etc., the texture of the paper There is a possibility of damage. Also, there is a method of applying and impregnating an aqueous solution of metal ions, but there is a concern that the paper support is colored by metal ions. Furthermore, the use of a compound containing these metals is not preferable from the viewpoint of environmental load because metal ions may flow out into the waste water during production.

一方、有機系の抗菌剤は容易に水に溶け、水溶液も無色もしくは淡色のものが多く、無機系の抗菌剤よりも紙への加工が容易である。例えば、比較的安全性の高い有機系抗菌剤として、安息香酸類、プロピオン酸類、デヒドロ酢酸類などがある。しかし、これらは無機系抗菌剤よりも抗菌効果が低く、また、経時や高温条件など環境の変化によって抗菌成分が揮発したり変色するものが多い。   On the other hand, organic antibacterial agents are easily dissolved in water, and aqueous solutions are often colorless or light-colored, and are easier to process into paper than inorganic antibacterial agents. Examples of relatively safe organic antibacterial agents include benzoic acids, propionic acids, and dehydroacetic acids. However, these have lower antibacterial effects than inorganic antibacterial agents, and many antibacterial components volatilize or discolor due to environmental changes such as aging and high temperature conditions.

そこで、本発明のグルコン酸クロルヘキシジンは、抗菌剤として用いることが有効であり、皮膚に刺激が少なく、臭いもほとんどなく、容易に水に溶け、取り扱いも容易である利点もある。   Therefore, the chlorhexidine gluconate of the present invention is effective for use as an antibacterial agent, has the advantages that it is less irritating to the skin, has almost no odor, is easily dissolved in water, and is easy to handle.

次いで、本発明のグルコン酸クロルヘキシジンを紙に付与する条件について検討した結果、一定の基準以上の抗菌性能を有する為には、抗菌剤を紙に0.005g/m2以上含有させることが必要である。従来の他の有機系菌抗菌剤を用いた抗菌紙では、90℃、24時間というような高温下においては、抗菌効果が小さくなる傾向にあるが、本発明においては高温下も高い抗菌効果を維持しており、90℃、5日間の処理でもその効果は変化しない。また、本発明では90℃、24時間処理すると、未処理のものよりさらに抗菌効果が向上する傾向を示す。したがって、より高い抗菌効果を求める場合、本発明品を90℃、24時間処理を行うことが望ましい。 Next, as a result of examining the conditions for applying chlorhexidine gluconate of the present invention to paper, in order to have antibacterial performance exceeding a certain standard, it is necessary to contain 0.005 g / m 2 or more of the antibacterial agent in the paper. is there. In antibacterial paper using other conventional organic antibacterial agents, the antibacterial effect tends to decrease at a high temperature such as 90 ° C. for 24 hours. However, in the present invention, the antibacterial effect is high even at a high temperature. The effect remains unchanged even at 90 ° C. for 5 days. Further, in the present invention, when treated at 90 ° C. for 24 hours, the antibacterial effect tends to be improved more than the untreated one. Therefore, when a higher antibacterial effect is desired, it is desirable to treat the product of the present invention at 90 ° C. for 24 hours.

また、有機系抗菌剤は高温条件下に置くと変色することがあり、本発明においても、高温条件下で薄橙色に変色することがある。そこで、本発明では、紙に付与したグルコン酸クロルヘキシジンの量と、高温条件下(90℃、24時間)における変色の有無、およびその程度に関して検討を行った結果、グルコン酸クロルヘキシジンを紙に0.005〜0.03g/m2含有させることで、明瞭な抗菌効果を示し、且つ、変色が少ない抗菌紙の提供が可能となった。 In addition, the organic antibacterial agent may be discolored when placed under a high temperature condition, and in the present invention, it may be discolored to a light orange color under a high temperature condition. Therefore, in the present invention, the amount of chlorhexidine gluconate added to the paper, the presence or absence of discoloration under high temperature conditions (90 ° C., 24 hours), and the degree thereof were examined. By including 005 to 0.03 g / m 2 , it is possible to provide an antibacterial paper that exhibits a clear antibacterial effect and has little discoloration.

他の有機系抗菌剤は、経時によって抗菌効果が失われていく為、一定の抗菌効果を保持するには、劣化分を補うべく抗菌剤を過剰に紙に付与する必要がある。一方、本発明で抗菌剤として用いているグルコン酸クロルヘキシジンは、上記にも述べたように優れた抗菌効果と抗菌効果の持続性を持つため、ごく少量でも一定の抗菌効果が得られ、紙への過剰な付与を必要としない。このため本発明の抗菌紙は、変色が少なく、且つ、高い抗菌効果を得ることが可能となる。   Since other organic antibacterial agents lose their antibacterial effect over time, in order to maintain a certain antibacterial effect, it is necessary to add an excessive amount of antibacterial agent to the paper in order to compensate for the deterioration. On the other hand, chlorhexidine gluconate used as an antibacterial agent in the present invention has an excellent antibacterial effect and a long-lasting antibacterial effect as described above. Does not require excessive grants. For this reason, the antibacterial paper of the present invention has little discoloration and can obtain a high antibacterial effect.

グルコン酸クロルヘキシジンは、水溶液を含浸、スプレー塗工、グラビア塗工などの方法で支持体に付与することが望ましいが、これに限定されるものではない。また、支持体に関しては、ティッシュやワイパーをはじめ、板紙、塗工紙などの紙にも応用が可能である。   Chlorhexidine gluconate is preferably applied to the support by impregnation with an aqueous solution, spray coating, gravure coating or the like, but is not limited thereto. In addition, the support can be applied to paper such as tissue and wipers, paperboard, and coated paper.

また、抗菌効果の強さは、グルコン酸クロルヘキシジンの含有量を変化させることでコントロールが可能である。本発明の抗菌紙を使用する環境、また用途によって、抗菌効果の調節を行うことができる。   The strength of the antibacterial effect can be controlled by changing the content of chlorhexidine gluconate. The antibacterial effect can be adjusted depending on the environment and use of the antibacterial paper of the present invention.

以下実施例によって本発明を更に詳しく説明するが、本発明はこの実施例に限定されるものではない。なお、実施例中の部数や百分率は質量基準である。   Hereinafter, the present invention will be described in more detail by way of examples. However, the present invention is not limited to these examples. In addition, the number of parts and percentage in an Example are based on mass.

実施例1
濾紙を縦2cm、横2cmに切断し、固形分含有量が0.005g/m2となるよう、1質量%グルコン酸クロルヘキシジン水溶液に含浸させ、乾燥させた。
Example 1
The filter paper was cut into a length of 2 cm and a width of 2 cm, and impregnated with an aqueous 1% by mass chlorhexidine gluconate solution so that the solid content was 0.005 g / m 2 and dried.

実施例2
グルコン酸クロルヘキシジンの含有量を0.01g/m2とした以外は、実施例1と同様の処理を行った。
Example 2
The same treatment as in Example 1 was performed except that the content of chlorhexidine gluconate was 0.01 g / m 2 .

実施例3
グルコン酸クロルヘキシジンの含有量を0.03g/m2とした以外は、実施例1と同様の処理を行った。
Example 3
The same treatment as in Example 1 was performed except that the content of chlorhexidine gluconate was 0.03 g / m 2 .

実施例4
グルコン酸クロルヘキシジンの含有量を0.1g/m2とした以外は、実施例1と同様の処理を行った。
Example 4
The same treatment as in Example 1 was performed except that the content of chlorhexidine gluconate was 0.1 g / m 2 .

実施例5
坪量64g/m2の上質紙を縦2cm、横2cmに切断し、固形分塗布量が0.005g/m2となるよう、1質量%グルコン酸クロルヘキシジン水溶液をスプレー塗布し、乾燥させた。
Example 5
Cut fine paper having a basis weight of 64 g / m 2 vertical 2 cm, the horizontal 2 cm, so as to have a solid content coating amount is 0.005 g / m 2, a 1 mass% chlorhexidine gluconate aqueous solution was spray-coated and dried.

実施例6
グルコン酸クロルヘキシジンの塗布量を0.01g/m2とした以外は、実施例5と同様の処理を行った。
Example 6
The same treatment as in Example 5 was performed except that the coating amount of chlorhexidine gluconate was 0.01 g / m 2 .

実施例7
グルコン酸クロルヘキシジンの塗布量を0.03g/m2とした以外は、実施例5と同様の処理を行った。
Example 7
The same treatment as in Example 5 was performed except that the coating amount of chlorhexidine gluconate was 0.03 g / m 2 .

実施例8
グルコン酸クロルヘキシジンの塗布量を0.1g/m2とした以外は、実施例5と同様の処理を行った。
Example 8
The same treatment as in Example 5 was performed except that the coating amount of chlorhexidine gluconate was 0.1 g / m 2 .

(比較例1)
グルコン酸クロルヘキシジンの代わりにプロピオン酸ナトリウムを用いた以外は、実施例1と同様の処理を行った。
(Comparative Example 1)
The same treatment as in Example 1 was performed except that sodium propionate was used in place of chlorhexidine gluconate.

(比較例2)
グルコン酸クロルヘキシジンの代わりにプロピオン酸ナトリウムを用いた以外は、実施例4と同様の処理を行った。
(Comparative Example 2)
The same treatment as in Example 4 was performed except that sodium propionate was used in place of chlorhexidine gluconate.

(比較例3)
グルコン酸クロルヘキシジンの代わりにデヒドロ酢酸ナトリウム溶液を用いた以外は、実施例1と同様の処理を行った。
(Comparative Example 3)
The same treatment as in Example 1 was performed except that a sodium dehydroacetate solution was used instead of chlorhexidine gluconate.

(比較例4)
グルコン酸クロルヘキシジンの代わりにデヒドロ酢酸ナトリウム溶液を用いた以外は、実施例4と同様の処理を行った。
(Comparative Example 4)
The same treatment as in Example 4 was performed except that a sodium dehydroacetate solution was used instead of chlorhexidine gluconate.

(抗菌効果の評価)
抗菌効果の評価はハロー試験で行った。Bacto Toryptone1質量%、酵母エキス0.5質量%、塩化ナトリウム1質量%となるよう蒸留水中に溶解させた後、水酸化ナトリウム溶液でpHを7に調整した。これに、液量に対して1.5質量%の粉末寒天を加え、オートクレーブにて120℃、20分滅菌を行った後、クリーンベンチ内でプラスチックシャーレに約20mlずつ分注した。約15分間クリーンベンチ内で放冷して固め、寒天培地として菌の培養に用いた。試験菌は黄色ブドウ球菌(Staphylococcus aureus IFO12732)を用い、培養液を菌数が1.0×104個/mlになるよう希釈した。寒天培地上に培養液0.5mlを塗布し、実施例1〜8および比較例1〜4で作成した紙片を上に載せて37℃、24時間培養後、試験片周囲の菌の生育阻止円(ハロー)の大きさをmm単位で測定した。ここでは、ハロー幅が2mm以上あるものについて、抗菌効果ありと判断した。
(Evaluation of antibacterial effect)
The antibacterial effect was evaluated by a halo test. After dissolving in distilled water so that it might become 1 mass% of Bacto Toryptone, 0.5 mass% of yeast extract, and 1 mass% of sodium chloride, pH was adjusted to 7 with the sodium hydroxide solution. To this, 1.5% by mass of powdered agar was added and sterilized in an autoclave at 120 ° C. for 20 minutes, and then dispensed into a plastic petri dish by about 20 ml in a clean bench. The mixture was allowed to cool and solidify in a clean bench for about 15 minutes, and used as an agar medium for culturing bacteria. As a test bacterium, Staphylococcus aureus IFO12732 was used, and the culture solution was diluted so that the number of bacteria became 1.0 × 10 4 cells / ml. A culture solution of 0.5 ml was applied on an agar medium, and the paper pieces prepared in Examples 1 to 8 and Comparative Examples 1 to 4 were placed on top and cultured at 37 ° C. for 24 hours. The size of (halo) was measured in mm. Here, those having a halo width of 2 mm or more were judged to have an antibacterial effect.

(抗菌効果の持続性評価)
本発明の抗菌紙の抗菌効果の持続性に関して評価を行うため、実施例1〜8および比較例1〜4は90℃、24時間加熱処理を行ったものについても同様の抗菌試験を行い、抗菌効果の変化より評価した。さらに、加熱処理後における変色の有無およびその程度についても評価を行った。○印は変色無し、△印は僅かに変色するが実用上問題なし、×印は明らかな変色があり実用不可能、とした。結果は全て表1に示した。
(Sustainability evaluation of antibacterial effect)
In order to evaluate the durability of the antibacterial effect of the antibacterial paper of the present invention, Examples 1 to 8 and Comparative Examples 1 to 4 were subjected to the same antibacterial test on those subjected to heat treatment at 90 ° C. for 24 hours. It evaluated from the change of the effect. Furthermore, the presence / absence and the degree of discoloration after the heat treatment were also evaluated. The symbol “◯” indicates no discoloration, the symbol “Δ” indicates a slight discoloration, but there is no practical problem, and the symbol “×” indicates that there is a clear discoloration and is impractical. All results are shown in Table 1.

Figure 2009242299
Figure 2009242299

表1から、実施例1〜4は、同量の抗菌剤を付与した比較例よりも大きなハローを形成し、より高い抗菌効果を有していることがわかる。さらに高温で処理しても効果は衰えず、高い抗菌効果と抗菌効果の持続性に優れた抗菌紙を得ることができた。また、グルコン酸クロルヘキシジンの付与方法を変えた実施例5〜8においても高い抗菌効果と、抗菌効果の持続性に優れた抗菌紙を得ることが出来た。   From Table 1, it turns out that Examples 1-4 form a halo larger than the comparative example which provided the same amount of antibacterial agents, and have a higher antibacterial effect. Furthermore, the effect was not diminished even when treated at a high temperature, and an antibacterial paper having a high antibacterial effect and an excellent durability of the antibacterial effect could be obtained. Moreover, also in Examples 5-8 which changed the provision method of chlorhexidine gluconate, the antimicrobial paper excellent in the high antimicrobial effect and the sustainability of the antimicrobial effect was able to be obtained.

また、表1より、グルコン酸クロルヘキシジンの含有量を0.005〜0.03g/m2にすることで、高温条件における変色を防ぐことが出来たことがわかる。 Table 1 also shows that discoloration under high temperature conditions could be prevented by setting the content of chlorhexidine gluconate to 0.005 to 0.03 g / m 2 .

実施例1、実施例5、比較例1、比較例3は抗菌剤の含有量は同じであるが、比較例1および比較例3では抗菌効果が得られなかった。したがって、明瞭な抗菌効果を得る為には、グルコン酸クロルヘキシジンを抗菌剤として、0.005g/m2以上紙支持体に含有させることが必要である。また、実施例4、実施例8、比較例2、比較例4も同量の抗菌剤を含有するが、高温処理によって比較例2は変色が起こり、比較例4は抗菌効果が激減する。更に、実施例1〜3と実施例4、及び実施例5〜7と実施例8の比較より、抗菌効果と抗菌効果の持続性に優れ、且つ変色の少ない抗菌紙を得るには、グルコン酸クロルヘキシジンを抗菌剤として、紙支持体に0.005〜0.03g/m2含有させる。 In Example 1, Example 5, Comparative Example 1, and Comparative Example 3, the content of the antibacterial agent was the same, but in Comparative Example 1 and Comparative Example 3, the antibacterial effect was not obtained. Therefore, in order to obtain a clear antibacterial effect, it is necessary to contain chlorhexidine gluconate as an antibacterial agent in an amount of 0.005 g / m 2 or more in the paper support. Moreover, although Example 4, Example 8, Comparative Example 2, and Comparative Example 4 contain the same amount of antibacterial agents, discoloration occurs in Comparative Example 2 due to high-temperature treatment, and Comparative Example 4 drastically reduces the antibacterial effect. Furthermore, in order to obtain an antibacterial paper that is superior in antibacterial effect and antibacterial effect and has little discoloration, as compared with Examples 1 to 3 and Example 4 and Examples 5 to 7 and Example 8, gluconic acid A paper support is made to contain 0.005-0.03 g / m < 2 > as a chlorohexidine antibacterial agent.

本発明は、医療や介護の現場、また、食品、医薬品の製造現場、学校、飲食店、研究分野などにおいて使用する、ふき取りワイパーや手拭きなどへの利用の可能性が考えられる。また、カルテや掲示物等、病院内で使用する紙製品としての利用も可能である。   The present invention can be used for wiper wipes and hand wipes used in medical and nursing care sites, food and pharmaceutical manufacturing sites, schools, restaurants, and research fields. It can also be used as paper products used in hospitals such as medical records and bulletins.

Claims (2)

グルコン酸クロルヘキシジンを0.005g/m2以上含有する抗菌紙。 Antibacterial paper containing 0.005 g / m 2 or more of chlorhexidine gluconate. グルコン酸クロルヘキシジンの含有量が0.005〜0.03g/m2である請求項1記載の抗菌紙。 Antibacterial paper according claim 1, wherein the content of the chlorhexidine gluconate is 0.005~0.03g / m 2.
JP2008090965A 2008-03-31 2008-03-31 Antibacterial paper Pending JP2009242299A (en)

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