JP2004089234A - Absorbent articles - Google Patents
Absorbent articles Download PDFInfo
- Publication number
- JP2004089234A JP2004089234A JP2002250858A JP2002250858A JP2004089234A JP 2004089234 A JP2004089234 A JP 2004089234A JP 2002250858 A JP2002250858 A JP 2002250858A JP 2002250858 A JP2002250858 A JP 2002250858A JP 2004089234 A JP2004089234 A JP 2004089234A
- Authority
- JP
- Japan
- Prior art keywords
- absorbent article
- component
- conjugate fiber
- heat
- composite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002250 absorbent Substances 0.000 title claims abstract description 60
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- 239000000919 ceramic Substances 0.000 claims abstract description 44
- 239000000853 adhesive Substances 0.000 claims abstract description 43
- ADRVNXBAWSRFAJ-UHFFFAOYSA-N catechin Natural products OC1Cc2cc(O)cc(O)c2OC1c3ccc(O)c(O)c3 ADRVNXBAWSRFAJ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 235000005487 catechin Nutrition 0.000 claims abstract description 31
- 241001122767 Theaceae Species 0.000 claims abstract description 29
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- 229950001002 cianidanol Drugs 0.000 claims description 11
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Abstract
【課題】充分な消臭性、抗菌防臭性を有し、更に皮膚トラブルから皮膚を積極的に保護できる吸収性物品を提供すること。
【解決手段】液透過性の表面布帛と液不透過性の裏面布帛とを有する吸収性物品において、該吸収性物品の少なくとも一部に、カテキン類、サポニン類、茶葉粉末、茶葉抽出物及びタンニン酸よりなる群から選ばれた少なくとも１種の機能性成分とセラミックス成分との複合体が配合された熱接着性複合繊維からなる布帛を配置したことを特徴とする吸収性物品による。
【選択図】なしAn absorbent article having sufficient deodorizing properties and antibacterial deodorizing properties and capable of positively protecting skin from skin troubles.
In an absorbent article having a liquid-permeable front fabric and a liquid-impermeable back fabric, at least a part of the absorbent article contains catechins, saponins, tea powder, tea leaf extract and tannin. An absorbent article characterized in that a cloth made of a heat-adhesive conjugate fiber mixed with a composite of at least one functional component selected from the group consisting of acids and a ceramic component is arranged.
[Selection diagram] None
Description
【０００１】
【発明の属する技術分野】
本発明は、消臭性、抗菌防臭性を有する生理用ナプキン、おりもの用シート、失禁パッド、使い捨てオムツ等の吸収性物品に関する。
【０００２】
【従来の技術】
これまで、使い捨てオムツ等の吸収性物品は、人体から排出された排泄物を吸収し、それを吸収性物品の外部に漏らさない機能を有していれば充分な性能を有していると思われてきた。しかし、外出中等で、使用済みの吸収性物品をすぐに取り替えることができず、数時間着用し続けた場合に、吸収性物品から異臭が発生することがあり、これが問題となっていた。この異臭は、菌が排泄物に含まれる尿素やタンパク質等を分解するときに発生し、着用者だけでなく周囲にも不快感を与えていた。
【０００３】
このような問題を解決するために、消臭性、抗菌防臭性能を付与した、カテキン類の抽出物微粉末を０．１〜１０重量％含有する、融点が１３０℃以下の熱可塑性重合体樹脂からなるカテキン類含有繊維を、生理用品、おむつ、失禁用パッド等の衛生材料分野に用いることが、特開平２０００−３０３２５０公報で提案されている。しかし、カテキン類は、１５０℃以上で分解を起こすため、熱可塑性樹脂の融点を大幅に上回る溶融温度では安定した紡糸を行うことができないといった欠点を有していた。また、カテキン類含有繊維には、菌の増殖を抑える効果はあるものの、熱可塑性樹脂からカテキン類が水によって比較的容易に溶出してしまうため、消臭性、抗菌防臭性能が低下し、これらの性能が充分に発揮できず、臭気が発生する問題が残っていた。
【０００４】
【発明が解決しようとする課題】
このようなことから、本発明は、充分な消臭性、抗菌防臭性を有し、更に皮膚トラブルから皮膚を積極的に保護できる吸収性物品を提供することを課題とする。
【０００５】
【課題を解決するための手段】
本発明者らは、前記課題を達成するために鋭意検討を重ねた。その結果、カテキン類、サポニン類、茶葉粉末、茶葉抽出物及びタンニン酸よりなる群から選ばれた少なくとも１種の機能性成分とセラミックス成分との複合体を熱接着性複合繊維に配合し、該熱接着性複合繊維からなる布帛を吸収性物品の少なくとも一部に配置することで、前記課題を解決できることを見出し、この知見に基づいて本発明を完成するに至った。
【０００６】
本発明は、前記課題を解決するため、以下の構成を有する。
（１）液透過性の表面布帛と液不透過性の裏面布帛とを有する吸収性物品において、該吸収性物品の少なくとも一部に、カテキン類、サポニン類、茶葉粉末、茶葉抽出物及びタンニン酸よりなる群から選ばれた少なくとも１種の機能性成分とセラミックス成分との複合体が配合された熱接着性複合繊維からなる布帛を配置したことを特徴とする吸収性物品。
（２）熱接着性複合繊維中に、機能性成分とセラミックス成分との複合体が、０．５〜２０重量％含まれていることを特徴とする前記（１）項記載の吸収性物品。
（３）熱接着性複合繊維からなる布帛が不織布である前記（１）項または前記（２）項記載の吸収性物品。
（４）熱接着性複合繊維が、ポリオレフィン系樹脂を少なくとも１成分とする複合繊維である前記（１）〜（３）のいずれか１項記載の吸収性物品。
（５）熱接着性複合繊維が、鞘芯型複合繊維である前記（１）〜（４）のいずれか１項記載の吸収性物品。
（６）熱接着性複合繊維が、分割型複合繊維である前記（１）〜（４）のいずれか１項記載の吸収性物品。
（７）熱接着性複合繊維が、異形断面を有することを特徴とする前記（１）〜（６）のいずれか１項記載の吸収性物品。
【０００７】
【発明の実施の形態】
以下、本発明を更に詳しく説明する。
本発明の吸収性物品は、液透過性の表面布帛（肌に接する部分）と、液不透過性の裏面布帛（外部に面する部分）とを有しており、該吸収性物品の少なくとも一部に、消臭性、抗菌防臭性を有する機能性成分と、それを担持するセラミックス成分との複合体（以下、単に複合体という場合もある。）が配合された熱接着性複合繊維からなる布帛が配置されている。
【０００８】
本発明では、熱接着性複合繊維に、充分な消臭性、抗菌防臭性を付与するためには、カテキン類、サポニン類、茶葉粉末、茶葉抽出物及びタンニン酸よりなる群から選ばれた少なくとも１種の機能性成分と、セラミックス成分との複合体を熱接着性複合繊維中に適量配合することが必要である。機能性成分は、その成分の形態のままでは耐熱性に乏しいため、セラミックス成分との複合体にし、耐熱性を向上させることが必要である。例えば、機能性成分であるカテキン類は、１５０℃以上で分解を起こすが、セラミックス成分との複合体にすることで、耐熱性を２６０℃程度まで向上できる。これにより、機能性成分を複合体として用いることで紡糸温度が高温でも分解が抑えられ、２６０℃までの高温紡糸が可能になる。また、機能性成分は、その成分の形態のままでは、熱可塑性樹脂から水に溶出し易いため、セラミックス成分との複合体にすることでそれを防止することができる。このように複合体とすることで、機能性成分の性能を充分に発揮させることができる。
【０００９】
本発明では、機能性成分として、カテキン類、サポニン類、茶葉粉末、茶葉抽出物及びタンニン酸よりなる群から選ばれた少なくとも１種を用いることができ、なかでも、カテキン類を用いることが好ましい。これらの成分は、消臭性、抗菌防臭性だけでなく、抗微生物性、生理活性、抗アレルギー性、抗酸化性等の機能を有している。
【００１０】
カテキン類には、単量体状のカテキンや低重合体状のカテキンがあり、これらを用いることができる。茶には、エピガロカテキン、エピガロカテキンガレート、エピカテキン、エピカテキンガレート等のカテキンが含まれている。本発明では、これらのカテキンを個々の成分に単離して利用する必要がなく、混合物のままで利用できる。本発明では、高濃度の茶由来のカテキン類を含有するカテキン製剤を利用することができ、茶由来のカテキンを少なくとも２０重量％含むカテキン製剤を使用することが好ましい。なお、市販の茶由来のカテキン製剤には、３０重量％品、５０重量％品、６０重量％品、７０重量％品、８０重量％品、９０重量％品等があり、これらは、比較的容易に入手可能である。また、カテキン類は茶以外にも柿、林檎等、多種の植物にも含まれているので、それらの植物由来のカテキン類を用いることもできる。なお、カテキン類には、テアフラビンも含まれる。
【００１１】
サポニン類のうち茶サポニンには、ステロイド系サポニン、トリテルペノイド系サポニン等があり、茶葉や茶の種子から茶サポニン含有成分を有機溶剤や水で抽出し、ついでこの成分をカラムクロマト等の手段で繰り返し精製することで茶サポニンを採取できる。本発明ではこれら茶サポニンを使用することができる。サポニン類は、茶以外には、ニンジン、チクセツニンジン、ダイズ、サイコ、アマチャズル、ヘチマ、オンジ、キキョウ、セネガ、バクモンドウ、モクツウ、チモ、ゴシツ、カンゾウ、サンキライ等の植物に含まれているので、これらから採取したサポニン類を用いることもできる。茶葉は、茶葉粉末または茶葉抽出物として利用でき、具体的には、一番茶、二番茶、三番茶、深むし、かぶせ等の茶の粉末または抽出物を用いることができる。
【００１２】
タンニン酸としては、市販の精製されたタンニン酸を用いることができ、また五倍子、没食子等タンニン酸含有植物の抽出物またはその半精製物をそのまま用いることもできる。
【００１３】
本発明に用いられるセラミックス成分としては、含水ケイ酸ゲルを経て得られるシリカゲル、無機質焼結助剤−無機質凝集剤の組成物、またはセラミックス粒子−無機質焼結助剤−無機質凝集剤の組成物を挙げることができる。
【００１４】
前記シリカゲルは、ケイ酸塩水溶液を、酸でｐＨを３〜４に調整して、含水ゲルとし、更にこの含水ゲルを水洗してイオンを除去してから乾燥することにより得られる。ケイ酸塩としては、Ｎａ２Ｏ・ｎＳｉＯ２で表されるケイ酸ナトリウムや、Ｋ２Ｏ・ｎＳｉＯ２で表されるケイ酸カリウムを用いることができ、なかでも、ケイ酸ナトリウムが好ましく利用できる。一般にケイ酸塩の濃厚水溶液は、水ガラスと呼ばれている。市販されている代表的な水ガラスの組成と含有量は、ＳｉＯ２含有量が２２〜３８重量％、Ｎａ２Ｏ含有量が５〜１９重量％である。
【００１５】
無機質焼結助剤としては、リン酸、硫酸、硝酸、炭酸等の無機酸の多価金属塩、アルカリ金属、アルカリ土類金属等のフッ化物やケイフッ化物を挙げることができる。多価金属塩としては、アルミニウム、亜鉛、マグネシウム、カルシウム、マンガン等の塩が好適に用いられ、通常は含水塩または水和物を水に溶解した形で用いられる。
【００１６】
無機質凝集剤としては、ゾル状の無水ケイ酸または溶液状のケイ酸塩（ケイ酸ナトリウム、ケイ酸カリウム）が好適に用いられる。ゾル状の無水ケイ酸には、水を媒体とする通常のコロイダルシリカの他、アルコール等の有機溶媒を媒体とするオルガノシリカゾルがある。
【００１７】
セラミックス粒子としては、カオリン、ろう石、セピオライト、バーミキュライト、水膨潤性グレードのマイカ、セリサイト、ベントナイト等の粘土鉱物、アルミナ、チタニア、シリカ、ジルコニア、マグネシア等の酸化物、水酸化アルミニウム、水酸化亜鉛、水酸化マグネシウム、水酸化カルシウム、水酸化マンガン等の水酸化物、ミョウバン等の複塩、窒化珪素、窒化ホウ素等の窒化物、炭化ケイ素、炭化ホウ素等の炭化物、アルミニウム塩、亜鉛塩、マグネシウム塩、カルシウム塩、マンガン塩等のケイ酸の多価金属塩、ケイ化物、ホウ化物、ゼオライト、クリストバライト、珪藻土等を例示できる。
【００１８】
なかでも、水を吸って膨潤する性質を有する粘土鉱物を用いることが特に好ましい。更に特異な繊維状構造を有するセピオライトが特に好ましい。
【００１９】
セラミックス成分が、無機質焼結助剤−無機質凝集剤の組成物の場合、各成分の割合は、無機質焼結助剤（固形分）１００重量部に対し、無機質凝集剤（固形分）を１００〜６００重量部にすればよく、１００〜３００重量部にすることが好ましい。セラミックス成分が、セラミック粒子−無機質焼結助剤−無機質凝集剤の組成物の場合、セラミックス成分を構成する各成分の割合は、セラミック粒子を主体とし、無機質焼結助剤および無機質凝集剤がそれぞれの役割を発揮する割合であればよく、具体的には、セラミック粒子１００重量部に対し、無機質焼結助剤（固形分）を０．５〜２０重量部程度、無機質凝集剤（固形分）を０．５〜２５重量部程度にすればよい。
【００２０】
機能性成分とセラミックス成分との複合体の製造に、セラミックス成分として含水ケイ酸ゲルを経て得られるシリカゲルを用いる場合には、ケイ酸塩水溶液と酸との混合前、混合時または混合後のゲル化反応完了前に機能性成分を添加して、シリカゲル中に機能性成分を含有させることが望ましい。
【００２１】
セラミックス成分が、無機質焼結助剤−無機質凝集剤の組成物の場合、機能性成分を含む状態でセラミックス成分を凝集させ、複合体として製造することが好ましい。具体的には、無機質焼結助剤としてリン酸アルミニウム水溶液を用い、これに粉末、水溶液またはアルコール溶液の機能性成分を混合し、ｐＨを３〜４に調整して、無機質凝集剤としてコロイダルシリカのコロイド液を用い、これを混合して、更にｐＨを中性程度に調整し、凝集を生じさせる。その凝集物をルツボや蒸発皿に移し、乾燥機または電気炉で加熱処理し乾燥することで複合体を製造できる。
【００２２】
セラミックス成分が、セラミック粒子−無機質焼結助剤−無機質凝集剤の組成物の場合、機能性成分を含む状態でセラミックス成分を凝集させ、複合体として製造することが好ましい。具体的には、ケイ酸アルミニウム、アルミナ、チタニア等のセラミックス粒子に、無機質焼結助剤としてリン酸アルミニウム水溶液を用い、これを硬練りペースト程度の粘度になるように加えて混練し、これに粉末、水溶液またはアルコール溶液等の状態の機能性成分を混合し、リン酸アルミニウム水溶液でｐＨを３〜４に調整して、無機質凝集剤としてコロイダルシリカのコロイド液を用い、これを混合して、更にｐＨを中性程度に調整し、凝集を生じさせる。その凝集物をルツボや蒸発皿に移し、乾燥機または電気炉で加熱処理し乾燥することで複合体を製造できる。
【００２３】
機能性成分とセラミックス成分との関係において、各成分の割合は、セラミックス成分１００重量部に対して機能性成分を１〜３００重量部、好ましくは２〜２００重量部、更に好ましくは３〜１５０重量部にすることがよい。セラミックス成分に対して、機能性成分の割合がこの範囲であると、消臭性、抗微生物性、生理活性、抗酸化性等の機能性が付与でき、更に機能性成分とセラミックス成分との量的なバランスが良好で、コスト的にも好ましくなる。
【００２４】
本発明に用いられる熱接着性複合繊維では、該熱接着性複合繊維を構成する、熱可塑性樹脂のうち、少なくとも１成分にポリオレフィン系樹脂を用い、他成分に該ポリオレフィン系樹脂より融点の高い熱可塑性樹脂を用いることが好ましい。このとき、熱接着性複合繊維を構成する熱可塑性樹脂は、１０℃以上の融点差を有する組み合わせとすることが熱接着性の点から好ましい。また、前記熱接着性複合繊維を構成するポリオレフィン系樹脂が、繊維の断面周長の３０％以上を占めていることが熱接着性の点から好ましい。
【００２５】
本発明に用いられる他成分の熱可塑性樹脂としては、繊維形成性を有し、通常の溶融紡糸装置を使用して溶融紡出可能な熱可塑性樹脂を用いることが好ましい。このような熱可塑性樹脂であれば特に制限なく利用でき、ポリオレフィン系樹脂、ポリエステル系樹脂及びポリアミド系樹脂等の熱可塑性樹脂が好ましく利用できる。更にこれらの熱可塑性樹脂は、単独で使用するだけでなく、２種類以上を混合して使用してもよい。
【００２６】
ポリオレフィン系樹脂としては、高密度ポリエチレン、直鎖状低密度ポリエチレン、低密度ポリエチレン、ポリプロピレン（プロピレン単独重合体）、プロピレンを主成分とするエチレン−プロピレン共重合体、プロピレンを主成分とするエチレン−プロピレン−ブテン−１共重合体、ポリブテン−１、ポリヘキセン−１、ポリオクテン−１、ポリ４−メチルペンテン−１、１，２−ポリブタジエン、１，４−ポリブタジエンが利用できる。更にこれらの単独重合体には、単独重合体を構成する単量体以外のエチレン、ブテン−１、ヘキセン−１、オクテン−１または４−メチルペンテン−１等のα−オレフィンが共重合成分として少量含有されていてもよい。また、ブタジエン、イソプレン、１，３−ペンタジエン、スチレン及びα−メチルスチレン等の他のエチレン系不飽和モノマーが共重合成分として少量含有されていてもよい。また上記ポリオレフィン系樹脂を２種以上混合して使用してもよい。これらは、通常のチーグラーナッタ触媒から重合されたポリオレフィン系樹脂だけでなく、メタロセン触媒から重合されたポリオレフィン系樹脂であってもよい。
【００２７】
また、他成分として用いられるポリエステル系樹脂とは、ジオールとジカルボン酸とから縮重合によって得られる重合体であり、ジカルボン酸成分としては、テレフタル酸、イソフタル酸、２，６−ナフタレンジカルボン酸、アジピン酸、セバシン酸等が利用でき、ジオール成分としては、エチレングリコール、ジエチレングリコール、１，４−ブタンジオール、ネオペンチルグリコール、１，４−シクロヘキサンジメタノール等が利用できる。ポリエステルとしては、例えば、ポリエチレンテレフタレートが好ましく利用できる。また、これらのポリエステルは、単独重合体だけでなく、共重合ポリエステル（コポリエステル）でもよい。このとき、共重合成分としては、アジピン酸、セバシン酸、フタル酸、イソフタル酸、２，６−ナフタレンジカルボン酸等のジカルボン酸成分、ジエチレングリコール、ネオペンチルグリコール等のジオール成分が利用できる。
【００２８】
ポリアミド系樹脂としては、ナイロン−４、ナイロン−６、ナイロン−４６、ナイロン−６６、ナイロン−６１０、ナイロン−１１、ナイロン−１２、ポリメタキシレンアジパミド（ＭＸＤ−６）、ポリパラキシレンデカンアミド（ＰＸＤ−１２）、ポリビスシクロヘキシルメタンデカンアミド（ＰＣＭ−１２）が利用できる。更にこれらのポリアミド系樹脂に用いられている単量体を構成単位とするアミドの共重合体が利用できる。
【００２９】
本発明において、熱融着性複合繊維を構成する熱可塑性樹脂のうち、少なくとも１成分に機能性成分とセラミックス成分との複合体を配合すればよいが、繊維表面に露出する熱可塑性樹脂成分に配合することが特に好ましい。例えば、熱融着性複合繊維が、ポリオレフィン系樹脂を少なくとも１成分とする複合繊維の場合には、ポリオレフィン系樹脂及び／またはそれ以外の他成分の熱可塑性樹脂に複合体を配合すればよいが、ポリオレフィン系樹脂が繊維断面周長の３０％以上を占める場合には、ポリオレフィン系樹脂に前記複合体を配合することが好ましい。なお、熱融着性複合繊維に前記複合体を配合する場合、予め機能性成分とセラミックス成分との複合体を製造し、その複合体を配合することが必要である。
【００３０】
本発明に用いられる熱融着性複合繊維としては、２成分の熱可塑性樹脂を並列型に配置した並列型複合繊維、２成分の熱可塑性樹脂を鞘芯型に配置した鞘芯型複合繊維が利用できる（以下、鞘側に配置した熱可塑性樹脂成分を鞘成分といい、芯側に配置した熱可塑性樹脂成分を芯成分という）。なかでも、鞘芯型複合繊維が好ましく利用でき、芯成分が鞘成分より融点の高い熱可塑性樹脂で構成されることが更に好ましい。ポリオレフィン系樹脂を鞘成分として用いた鞘芯型複合繊維の場合には、芯成分は該ポリオレフィン系樹脂より融点の高い熱可塑性樹脂であることが好ましい。なお、鞘芯型断面の形状は、同心鞘芯型、偏心鞘芯型、多心鞘芯型、異形断面形状の鞘芯型のいずれであってもよい。
【００３１】
本発明に用いられる熱接着性複合繊維の断面形状を、異形断面形状（非円形断面形状）にすることで、同繊度の円形断面を有する複合繊維と比べて、繊維表面積が増え、繊維表面における複合体の露出が増えるために好ましい。異形断面形状としては、例えば、星形、楕円形、三角形、四角形、五角形、多葉形、アレイ形、Ｔ字形及び馬蹄形等を挙げることができる。なお、これらの断面形状は図３で示した形状に特に限定されない。
【００３２】
本発明に用いられる熱接着性複合繊維として、分割型複合繊維を用いることができる。分割型複合繊維の断面形状は、ポリオレフィン系樹脂からなる１成分が繊維断面周長の少なくとも３０％を占めていれば、特に限定されない。例えば、放射型、中空放射型、多層型等の断面形状を挙げることができる。特に、分割型複合繊維を構成する熱可塑性樹脂のうち、少なくとも２成分を交互に配列させた断面形状にすることが好ましい。なお、１成分のセグメントが、隣接する他の成分のセグメントを完全に被覆していない構造であることが好ましく、分割後のセグメント数は、４〜３２程度がよい。
【００３３】
本発明に用いられる紡糸方法としては、熱溶融紡糸法、メルトブロー法、スパンボンド法等の従来公知の方法を用いることができる。なお、一般に、メルトブロー法、スパンボンド法は、繊維の紡糸工程、ウェブ形成工程及び不織布化工程を有する製造方法である。熱接着性複合繊維からなるウェブを不織布とする方法としては、サーマルボンド法（スルーエアー法、ポイントボンド法）、ニードルパンチ法、ウォータージェット法等の従来公知の方法を用いることができる。
【００３４】
本発明の吸収性物品に用いられる布帛としては、ネット、ウェブ、編織物、不織布等を挙げることができ、特に不織布が好ましい。これらの布帛を液透過性にするためには、布帛の表裏を貫通する孔の大きさの調節や、布帛を構成する熱可塑性樹脂の種類の選択を行うとよい。また、布帛表面に親水剤等の表面処理剤を塗布することでも液透過性にできる。不織布等の布帛を液不透過性にするためには、加圧及び／または加熱により液体が透過できない程度まで、布帛の表裏を貫通する孔の大きさを小さく調節するとよい。更に布帛表面に撥水剤などの表面処理剤を塗布することでも液不透過性にできる。また、布帛にフィルム等を積層して液不透過性にしてもよく、これら布帛以外のフィルムやシートを利用してもよい。
【００３５】
本発明の吸収性物品は、機能性成分とセラミックス成分との複合体が配合された熱接着性複合繊維からなる布帛を含み、該熱接着性複合繊維中に、機能性成分とセラミックス成分との複合体が、少なくとも０．５重量％添加されていればよく、好ましくは０．５〜２０重量％の範囲であり、より好ましくは０．７〜１０重量％の範囲である。添加量が０．５〜２０重量％の範囲であれば、熱接着性複合繊維製造時の曳糸性は良好になる。この熱接着性複合繊維からなる布帛は、抗菌力、肌の保護力は充分であり、更に吸収性物品に該布帛を適量使用することで、優れた消臭性能を示す。前記熱接着性複合繊維は、単独で使用してもよいが、本発明の効果を損なわない程度に他の繊維と混綿して用いてもよい。
【００３６】
本発明の吸収性物品の例として、図１の使い捨てオムツについて、その構成、機能を説明する。使い捨てオムツ１は、尿や血液等の体液を吸収し、更に漏れを防止するため、尿や血液等の体液を吸収し保持する吸収コア層２と、吸収コア層２を包む液透過性の吸収コア層のカバー３と、その表面側（肌に接する側）に配置される液透過性の表面布帛４と、吸収コア層の裏側面（表面布帛が位置する側と反対側）に配置され吸収した体液が外部に漏れることを防ぐための液不透過性の裏面布帛５から基本的に構成されている。
【００３７】
クッション性を付与する機能、体液を拡散させる機能、吸収コア層に吸収された体液が肌側に逆戻りすることを防止する機能等のいずれかの機能を付与するために、前記吸収コア層のカバー３と表面布帛４との間、または吸収コア層と吸収コア層のカバーとの間に更にシート（通常、セカンドシートと呼ばれている。）が挿入された構成の吸収性物品も存在する。この他、種々の機能を付与するために更に他の機能を有するシートが挿入され、より多層になっている吸収性物品もある。
【００３８】
本発明の吸収性物品では、上記吸収性物品の構成において、表面布帛４及び／または裏面布帛５の少なくとも一部に、機能性成分とセラミックス成分との複合体が配合（添加）された熱接着性複合繊維からなる布帛を配置することが好ましい。なお、上記部材以外の部位に、前記布帛を配置してもよい。
【００３９】
機能性成分とセラミックス成分との複合体が配合された熱接着性複合繊維からなる布帛を吸収性物品中に配置することにより、表面布帛４での菌の繁殖を抑制し、排泄物の分解に伴う異臭の発生を抑制することができる。また、体液が表面布帛４を透過して吸収コア層２に吸収された後でも、表面布帛４及び／または裏面布帛５に配置された前記布帛により、着装した吸収性物品から外への臭気物質の放出を防ぐことができる。
【００４０】
更に抗アレルギー性、抗酸化性を有する機能性成分が肌に接触していることで、アレルギーやかぶれ等の障害から皮膚を積極的に保護することができる。
【００４１】
【実施例】
以下、実施例により本発明を詳述するが、本発明はこれら実施例により何ら限定されるものではない。なお、各例において不織布性能評価は以下に示す方法で行った。
【００４２】
（樹脂のメルトフローレート）
ＪＩＳ Ｋ ７２１０に準拠して、下記の条件で樹脂のメルトフローレート（ＭＦＲ、ＭＩ）を測定した。
ＭＦＲ：ＪＩＳ Ｋ ７２１０の表１の条件１４
ＭＩ ：ＪＩＳ Ｋ ７２１０の表１の条件４
【００４３】
（極限粘度）
フェノールと四塩化エタンの等重量混合溶媒を用い、濃度０．５ｇ／１００ｍｌ、温度２０℃で測定した値である。
【００４４】
（正量繊度）
ＪＩＳ Ｌ １０１５ 化学繊維ステープル試験方法 繊度 Ａ法に基づく繊維１００００ｍで換算した繊度を示した。
【００４５】
（消臭性試験Ｉ）
実施例及び比較例で得られた不織布の消臭性能を、アンモニアを臭気成分として用いて、次のように測定した。テドラーバッグ（容積５リットル）に所定量（３ｇ）の不織布を入れて密封し、次いで、シリンジを用いて、所定濃度の臭気成分を含む空気を、全ガス量３リットルとなるようにテドラーバッグ内に注入した。ガスを注入してから一定時間経過後に、テドラーバッグ内のガスをガス検知管（ガステック社製、アンモニア用３Ｌａ、３Ｌ型）を用いて直接測定し、下記式により臭気成分の除去率を求めた。
除去率（％）＝｛（Ｃ０−Ｃ）／Ｃ０｝×１００
（Ｃ０：初期濃度、Ｃ：一定時間経過後のＮＨ３濃度）
【００４６】
（消臭性試験ＩＩ）
市販の使い捨てオムツを用い、そのオムツから表面布帛を取り除き、実施例及び比較例で得られた布帛をその部分に装着して、吸収性物品（使い捨てオムツ）を作製した。消臭性試験ＩＩは、これを用いて、以下の通りに行った。
前記吸収性物品に、人尿５０ｍｌを含浸させて密封袋に入れ保存し、２４時間後にその密封袋内の臭気の有無を判定した。判定は被験者５人により行った。
（消臭性試験ＩＩの判定基準）
◎（優良）：臭いがほとんどしない
○（良） ：わずかに臭いがするが気にならない。
△（普通）：やや不快な臭いがする。
×（不良）：不快な臭いがする。
【００４７】
（抗菌防臭試験）
下記の条件により、各試料の抗菌防臭性を調べた。
試験項目：抗菌性試験
試験菌：Ｓｔａｐｈｙｌｏｃｏｃｃｕｓ ａｕｒｅｕｓ ＡＴＣＣ ６５３８Ｐ
試験方法：ＪＩＳ Ｌ １９０２定量試験（統一試験方法）による。
試験結果：
・植菌数［Ａ］は２．５×１０４、ｌｏｇＡ＝４．４
・無加工布菌数［Ｂ］は１．６×１０７、ｌｏｇＢ＝７．２
・培養後の生菌数［Ｃ］、ｌｏｇＣ
・ｌｏｇＢ−ｌｏｇＡ＝２．８＞１．５（試験は有効）
・静菌活性値＝ｌｏｇＢ−ｌｏｇＣ（２．２以上で抗菌防臭性あり）
【００４８】
（皮膚刺激性試験）
実施例及び比較例で得られた不織布を、半径５ｍｍの円形に切り、これを２０人の被験者の皮膚に２４時間貼布し、２４時間後の肌の様子を肉眼で観察した。このとき、肌荒れが確認された人数をカウントし、以下の判定基準で評価した。（皮膚刺激性の判定基準）
○（良） ：肌荒れが確認できた人数が、３人以下。
△（普通）：肌荒れが確認できた人数が、４〜５人。
×（不良）：肌荒れが確認できた人数が、６人以上。
【００４９】
実施例１
複合体の作製は、次のように行った。セラミックス成分として、平均粒径３２５メッシュアンダーのシリカ４００重量部と、機能性成分として、茶カテキン６０重量％品（エピガロカテキン、エピガロカテキンガレート、エピカテキン及びエピカテキンガレートの合計量が約６０重量％の茶由来のカテキン製剤）４３０重量部とを乾式混合した後、これに濃度２５重量％のリン酸アルミニウム水溶液２００重量部を添加しながら硬めに混練してペーストにした。このペーストにコロイダルシリカのコロイド液（固形分４０重量％）５０重量部を混合して、ｐＨを中性にもっていった。この時点で徐々に凝集が起きてくるので、ハンドリングできるうちにルツボに移し、乾燥後、１００〜３００℃で脱水、加水分解させた。これを微粉砕することで複合体を得た。
【００５０】
複合繊維の作製は、次のように行った。鞘成分として、上記複合体７重量％と、結晶性高密度ポリエチレン（エチレン単独重合体、融点１３１℃、ＭＩ１６ｇ／１０ｍｉｎ）９３重量％との組成物を用い、芯成分として、結晶性ポリプロピレン（プロピレン単独重合体、融点１６３℃、ＭＦＲ１６ｇ／１０ｍｉｎ）を用いて、鞘芯型複合紡糸装置（鞘芯型紡糸口金を使用）により紡糸温度２５０℃で複合紡糸を行った。得られた未延伸糸は１２ｄｔｅｘであった。この未延伸糸を用いて、ロール型延伸装置により、延伸温度９０℃、延伸倍率４．５倍で延伸を行ない、得られた延伸糸をカッターで切断して、ステープル状の複合繊維とした。得られた複合繊維は、図２に示した断面の鞘芯型複合繊維であり、正量繊度３．３ｄｔｅｘ、繊維長５１ｍｍであった。表１に、鞘芯成分の樹脂構成、断面形状、複合体の添加量を示した。
【００５１】
不織布の作製は、次のように行った。得られた複合繊維を用いて、カード機で所定目付のウェブを作製し、このウェブを１３５℃に設定したスルーエアー加工機に通過させて、熱接着させることで不織布とした。布帛としてこの不織布を用い、消臭性試験法Ｉ、消臭性試験法ＩＩ、抗菌防臭性試験及び皮膚刺激性試験を行った。表１に試験結果を示す。
【００５２】
実施例２
鞘成分として、エチレン−ブテン−プロピレン共重合体（エチレン含量４重量％、ブテン含量５重量％、プロピレン含量９１重量％、融点１３１℃、ＭＦＲ１６ｇ／１０ｍｉｎ）を使用した以外は、実施例１に準拠して、熱接着性複合繊維及び不織布を作製した。表１に試験結果を示す。
【００５３】
実施例３
鞘成分として、高密度ポリエチレン（エチレン単独重合体、融点１３１℃、ＭＩ２４ｇ／１０ｍｉｎ）を用い、芯成分として、ポリエチレンテレフタレート（極限粘度［η］＝０．６３５ｄｌ／ｇ）を用いて、複合体の添加量を変更した以外は実施例１に準拠して熱接着性複合繊維及び不織布を作製した。表１に試験結果を示す。
【００５４】
実施例４
星形の紡糸口金を用い、複合繊維の断面形状を変更し、樹脂の吐出量を増やし、延伸糸のカット長を変更した以外は、実施例１の複合繊維の製造に準拠して紡糸（１６．５ｄｔｅｘの未延伸糸）、延伸、カットを行い、複合繊維を製造した。得られた複合繊維は、断面形状が図３のような星形異形断面で、カット長３８ｍｍ、繊度４．５ｄｔｅｘの複合繊維であった。この複合繊維を用いて実施例１に準拠して不織布を作製した。表１に試験結果を示す。
【００５５】
実施例５
延伸糸繊度を４．５ｄｔｅｘの複合繊維とし、複合体の添加量を変更した以外は実施例１に準拠して熱接着性複合繊維及び不織布を作製した。表１に試験結果を示す。
【００５６】
実施例６
鞘成分として、共重合ポリエステル（極限粘度［η］＝０．７２６ｄｌ／ｇ）を用い、芯成分として、ポリエチレンテレフタレート（極限粘度［η］＝０．６３５ｄｌ／ｇ）を用い、複合体の添加量を変更し、繊度を４．６ｄｔｅｘとし、不織布の目付を変更したこと以外は、実施例１に準拠して複合繊維及び不織布を作製した。表１に試験結果を示す。
【００５７】
比較例１
鞘成分として、複合体無添加の高密度ポリエチレン（エチレン単独重合体、ＭＩ１６ｇ／１０ｍｉｎ、融点１３１℃）を使用し、芯成分として、ポリプロピレン（プロピレン単独重合体、ＭＦＲ１６ｇ／１０ｍｉｎ、融点１６３℃）を使用した以外は実施例１に準拠して熱接着性複合繊維及び不織布を作製した。表１に試験結果を示す。
【００５８】
実施例７
実施例１で得られた熱接着性複合繊維と比較例１で得られた熱接着性複合繊維とを３：７の割合で混綿した繊維を用いた以外は、実施例１に準拠して不織布を作製した。表１に試験結果を示す。
【００５９】
実施例８
分割型の紡糸口金を用い、複合繊維の断面形状を変更した以外は、実施例１に準拠して分割型の熱接着性複合繊維を作製した。得られた熱接着性複合繊維を用いて、カード機で所定目付のウェブを作製し、このウェブを８０メッシュの平織からなるベルトを有するベルトコンベアー上に載せ、ノズル径０．１ｍｍ、ノズル間のピッチ１ｍｍで多数のノズルが設けられているノズルプレートからこのウェブに高圧水流を噴射した。まず水圧２ＭＰａの水流でウェブに予備処理（２段目）した後、更に水圧６ＭＰａの水流で４段分割処理し、次いでこの交絡したウェブを反転させて水圧６ＭＰａの水流で４段分割処理して熱接着性複合繊維を分割すると同時に分割した繊維を交絡させ、極細繊維からなる不織布を作製した。表１に試験結果を示す。なお、得られた不織布は、充分に機能性成分の性能が発揮されていたことから、水による複合体の溶出が起こっていないことがわかった。
【００６０】
比較例２
茶カテキン６０重量％品（エピガロカテキン、エピガロカテキンガレート、エピカテキン及びエピカテキンガレートの合計約６０重量％を含有する茶由来のカテキン製剤）を単独で鞘成分に７重量％添加した以外は実施例１に準拠して熱接着性繊維を作製した。なお、紡糸をこの条件で行ったところ、糸切れが多発し、また発煙もみとめられたため、紡糸を中止した。このため、未延伸糸を採取することはできなかった。茶カテキン単独添加で紡糸を行うと、通常の紡糸温度では曳糸性が著しく悪くなることが確認できた。
【００６１】
【表１】
消臭性試験Ｉ、消臭性試験ＩＩ、抗菌防臭試験の結果から、機能性成分として、茶由来のカテキン類を用い、これとセラミックス成分との複合体が配合された熱接着性複合繊維からなる布帛を配置した本発明の吸収性物品は、消臭性、抗菌防臭性に優れていることがわかった。機能性成分として、サポニン類、茶葉粉末、茶葉抽出物、タンニン酸を用いた場合にも、同様に消臭性、抗菌防臭性に優れた吸収性物品が得られることがわかる。
【００６３】
【発明の効果】
本発明の吸収性物品に、カテキン類、サポニン類、茶葉粉末、茶葉抽出物及びタンニン酸よりなる群から選ばれた少なくとも１種の機能性成分とセラミックス成分との複合体が配合された熱接着性複合繊維からなる布帛を用いることで、消臭性、抗菌防臭性に優れた吸収性物品が得られる。吸収性物品に表面布帛として、前記複合体を０．５〜２０重量％含有する熱接着性複合繊維からなる布帛を配置することで、皮膚刺激性に優れ、アレルギー、かぶれ、肌荒れ等の皮膚トラブルを殆ど生じさせず、消臭性、抗菌防臭性に優れた吸収性物品が得られる。また、機能性成分とセラミックス成分との複合体を使用することで紡糸温度が高温であっても分解が抑えられるので、汎用の熱可塑性樹脂を原料樹脂として利用して良好に繊維化が行える。更に、機能性成分とセラミックス成分との複合体を使用することで、水による溶出を防止することができ、機能性成分の性能を充分に発揮させることができる。
【図面の簡単な説明】
【図１】本発明における一実施形態としての使い捨てオムツの表面布帛側を示す概略図。
【図２】鞘芯型複合繊維の横断面図
【図３】星型異形断面複合繊維の横断面図。
【符号の説明】
１ 使い捨てオムツ
２ 吸収コア層
３ 吸収コア層のカバー
４ 表面布帛
５ 裏面布帛
６ 機能性成分とセラミックス成分との複合体が添加された鞘成分
７ 芯成分[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an absorbent article such as a sanitary napkin having a deodorant property and an antibacterial deodorant property, a vaginal sheet, an incontinence pad, and a disposable diaper.
[0002]
[Prior art]
Until now, absorbent articles such as disposable diapers are considered to have sufficient performance if they have the function of absorbing excrement discharged from the human body and not leaking the same to the outside of the absorbent article. I have been. However, when going out, the used absorbent article cannot be replaced immediately, and when worn continuously for several hours, the absorbent article may give off a bad smell, which has been a problem. This off-flavor was generated when the bacteria decomposed urea, proteins and the like contained in the excrement, and gave unpleasant sensations not only to the wearer but also to the surroundings.
[0003]
In order to solve such a problem, a thermoplastic polymer resin containing 0.1 to 10% by weight of catechin extract fine powder having a deodorizing property and an antibacterial deodorizing property and having a melting point of 130 ° C. or less is provided. It has been proposed in Japanese Patent Application Laid-Open No. 2000-303250 to use a catechin-containing fiber consisting of the following in the field of sanitary materials such as sanitary products, diapers and incontinence pads. However, since catechins are decomposed at 150 ° C. or higher, they have a drawback that stable spinning cannot be performed at a melting temperature much higher than the melting point of the thermoplastic resin. In addition, although catechins-containing fibers have an effect of suppressing the growth of bacteria, catechins are relatively easily eluted by water from a thermoplastic resin, so that deodorant properties and antibacterial and deodorant performance are reduced. Had not been able to exhibit its performance sufficiently, and the problem of odor generation remained.
[0004]
[Problems to be solved by the invention]
In view of the above, an object of the present invention is to provide an absorbent article having sufficient deodorizing properties and antibacterial and deodorizing properties and capable of positively protecting the skin from skin troubles.
[0005]
[Means for Solving the Problems]
The present inventors have conducted intensive studies to achieve the above object. As a result, a composite of a ceramic component and at least one functional component selected from the group consisting of catechins, saponins, tea leaf powder, tea leaf extract and tannic acid is added to the heat-adhesive composite fiber, It has been found that the above problem can be solved by arranging a cloth made of a heat-adhesive conjugate fiber on at least a part of an absorbent article, and the present invention has been completed based on this finding.
[0006]
The present invention has the following configurations in order to solve the above-mentioned problems.
(1) In an absorbent article having a liquid-permeable front fabric and a liquid-impermeable back fabric, at least a portion of the absorbent article contains catechins, saponins, tea powder, tea extract, and tannic acid. An absorbent article comprising a heat-adhesive conjugate fiber blended with a composite of at least one functional component selected from the group consisting of a ceramic component and a functional component.
(2) The absorbent article according to the above (1), wherein the composite of the functional component and the ceramic component is contained in the heat-adhesive conjugate fiber in an amount of 0.5 to 20% by weight.
(3) The absorbent article according to the above (1) or (2), wherein the cloth made of the heat-adhesive conjugate fiber is a nonwoven fabric.
(4) The absorbent article according to any one of (1) to (3), wherein the heat-adhesive conjugate fiber is a conjugate fiber containing a polyolefin-based resin as at least one component.
(5) The absorbent article according to any one of (1) to (4), wherein the heat-adhesive conjugate fiber is a sheath-core conjugate fiber.
(6) The absorbent article according to any one of (1) to (4), wherein the heat-adhesive conjugate fiber is a splittable conjugate fiber.
(7) The absorbent article according to any one of (1) to (6), wherein the heat-adhesive conjugate fiber has an irregular cross section.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in more detail.
The absorbent article of the present invention has a liquid-permeable surface fabric (a portion in contact with the skin) and a liquid-impermeable back fabric (a portion facing the outside). A heat-adhesive conjugate fiber in which a composite of a functional component having a deodorant property and an antibacterial deodorant property and a ceramic component carrying the same (hereinafter, sometimes simply referred to as a composite) is blended in a portion. The fabric is arranged.
[0008]
In the present invention, in order to impart sufficient deodorant and antibacterial deodorant properties to the heat-adhesive conjugate fiber, at least one selected from the group consisting of catechins, saponins, tea leaf powder, tea leaf extract and tannic acid. It is necessary to mix an appropriate amount of a composite of one type of functional component and a ceramic component in a heat-adhesive conjugate fiber. Since the functional component has poor heat resistance in the form of the component, it is necessary to improve the heat resistance by forming a composite with the ceramic component. For example, catechins, which are functional components, decompose at 150 ° C. or higher, but by forming a composite with a ceramic component, heat resistance can be improved to about 260 ° C. Thus, even when the spinning temperature is high, decomposition is suppressed by using the functional component as a composite, and high-temperature spinning up to 260 ° C. becomes possible. In addition, since the functional component is easily eluted from the thermoplastic resin into water in the form of the component, it can be prevented by forming a composite with the ceramic component. By thus forming a composite, the performance of the functional component can be sufficiently exhibited.
[0009]
In the present invention, as the functional component, at least one selected from the group consisting of catechins, saponins, tea leaf powder, tea leaf extract and tannic acid can be used, and among them, catechins are preferably used. . These components have not only deodorizing properties and antibacterial deodorizing properties but also functions such as antimicrobial properties, physiological activities, antiallergic properties, and antioxidant properties.
[0010]
Catechins include monomeric catechins and low-polymer catechins, and these can be used. Tea contains catechins such as epigallocatechin, epigallocatechin gallate, epicatechin, epicatechin gallate and the like. In the present invention, these catechins do not need to be isolated and used as individual components, and can be used as a mixture. In the present invention, a catechin preparation containing a high concentration of tea-derived catechins can be used, and it is preferable to use a catechin preparation containing at least 20% by weight of tea-derived catechin. In addition, commercially available catechin preparations derived from tea include 30% by weight, 50% by weight, 60% by weight, 70% by weight, 80% by weight, and 90% by weight, and the like. It is readily available. In addition, since catechins are contained in various plants such as persimmons and apples in addition to tea, catechins derived from those plants can also be used. The catechins also include theaflavins.
[0011]
Among the saponins, tea saponins include steroidal saponins, triterpenoid saponins, and the like.Tea saponin-containing components are extracted from tea leaves and tea seeds with an organic solvent or water, and then the components are repeated by means such as column chromatography. By purification, tea saponin can be collected. In the present invention, these tea saponins can be used. Since saponins, other than tea, are contained in plants such as carrot, chix carrot, soybean, psycho, amachazur, loofah, onji, kikyo, senega, bakmondou, mokutsu, timo, gossip, licorice, sankirai, etc. Saponins collected from these can also be used. Tea leaves can be used as a tea leaf powder or a tea leaf extract, and specifically, a tea powder or an extract such as a first tea, a second tea, a third tea, a deep-seasoned tea, and a cover can be used.
[0012]
As the tannic acid, a commercially available purified tannic acid can be used, and an extract of a tannic acid-containing plant such as a quintet or gallic or a semi-purified product thereof can also be used as it is.
[0013]
As the ceramic component used in the present invention, silica gel obtained through hydrated silica gel, a composition of inorganic sintering aid-inorganic coagulant, or a composition of ceramic particles-inorganic sintering aid-inorganic coagulant Can be mentioned.
[0014]
The silica gel is obtained by adjusting the pH of an aqueous solution of silicate to 3 to 4 with an acid to form a hydrous gel, washing the hydrous gel with water to remove ions, and then drying. As the silicate, Na 2 On SiOn 2 Sodium silicate represented by 2 On SiOn 2 Can be used, and among them, sodium silicate can be preferably used. Generally, a concentrated aqueous solution of a silicate is called a water glass. The composition and content of a typical commercially available water glass are SiO 2 2 Content of 22-38% by weight, Na 2 The O content is 5 to 19% by weight.
[0015]
Examples of the inorganic sintering aid include polyvalent metal salts of inorganic acids such as phosphoric acid, sulfuric acid, nitric acid, and carbonic acid, and fluorides and silicofluorides of alkali metals and alkaline earth metals. As the polyvalent metal salt, a salt of aluminum, zinc, magnesium, calcium, manganese or the like is suitably used, and usually, a hydrated salt or a hydrate is used in a form dissolved in water.
[0016]
As the inorganic coagulant, sol silicic acid anhydride or solution silicate (sodium silicate, potassium silicate) is preferably used. The sol-form silicic anhydride includes not only ordinary colloidal silica using water as a medium but also organosilica sol using an organic solvent such as alcohol as a medium.
[0017]
Ceramic particles include kaolin, pyroxene, sepiolite, vermiculite, clay minerals such as water-swellable mica, sericite, bentonite, oxides such as alumina, titania, silica, zirconia, magnesia, aluminum hydroxide, and hydroxide. Hydroxides such as zinc, magnesium hydroxide, calcium hydroxide, and manganese hydroxide; double salts such as alum; nitrides such as silicon nitride and boron nitride; carbides such as silicon carbide and boron carbide; aluminum salts; zinc salts; Examples thereof include polyvalent metal salts of silicic acid such as magnesium salts, calcium salts, and manganese salts, silicides, borides, zeolites, cristobalites, and diatomaceous earth.
[0018]
Among them, it is particularly preferable to use a clay mineral having a property of swelling by absorbing water. Further, sepiolite having a unique fibrous structure is particularly preferred.
[0019]
When the ceramic component is an inorganic sintering aid-inorganic coagulant composition, the ratio of each component is 100 to 100 parts by weight of the inorganic sintering aid (solid content) and 100 to 100 parts by weight of the inorganic coagulant (solid content). The amount may be 600 parts by weight, preferably 100 to 300 parts by weight. When the ceramic component is a ceramic particle-inorganic sintering aid-inorganic coagulant composition, the proportion of each component constituting the ceramic component is mainly ceramic particles, and the inorganic sintering aid and the inorganic coagulant are respectively The amount of the inorganic sintering agent (solid content) is about 0.5 to 20 parts by weight, and the amount of the inorganic coagulant (solid content) is 100 parts by weight of the ceramic particles. Should be about 0.5 to 25 parts by weight.
[0020]
When silica gel obtained through hydrated silica gel is used as the ceramic component for the production of the composite of the functional component and the ceramic component, the gel before, during or after mixing the silicate aqueous solution with the acid is used. It is desirable to add a functional component before the completion of the chemical reaction so that the functional component is contained in the silica gel.
[0021]
When the ceramic component is a composition of an inorganic sintering aid and an inorganic coagulant, it is preferable that the ceramic component is agglomerated while containing a functional component to produce a composite. Specifically, an aqueous solution of aluminum phosphate is used as an inorganic sintering aid, and a functional component such as a powder, an aqueous solution or an alcohol solution is mixed with the aqueous solution to adjust the pH to 3 to 4, and colloidal silica is used as an inorganic coagulant. Are mixed and mixed, and the pH is further adjusted to a neutral level to cause agglomeration. The aggregate can be transferred to a crucible or an evaporating dish, heated in a dryer or an electric furnace, and dried to produce a composite.
[0022]
When the ceramic component is a composition of ceramic particles-inorganic sintering aid-inorganic coagulant, it is preferable that the ceramic component is agglomerated while containing the functional component to produce a composite. Specifically, an aluminum phosphate aqueous solution is used as an inorganic sintering aid for ceramic particles such as aluminum silicate, alumina, and titania, and the mixture is kneaded by adding it to the viscosity of a stiff paste. Powder, an aqueous solution or a functional component in the form of an alcohol solution are mixed, the pH is adjusted to 3 to 4 with an aqueous solution of aluminum phosphate, and a colloidal solution of colloidal silica is used as an inorganic coagulant, and this is mixed. Further, the pH is adjusted to a neutral level to cause aggregation. The aggregate can be transferred to a crucible or an evaporating dish, heated in a dryer or an electric furnace, and dried to produce a composite.
[0023]
In the relationship between the functional component and the ceramic component, the ratio of each component is 1 to 300 parts by weight, preferably 2 to 200 parts by weight, more preferably 3 to 150 parts by weight of the functional component with respect to 100 parts by weight of the ceramic component. Part. When the ratio of the functional component to the ceramic component is within this range, functionalities such as deodorant, antimicrobial, physiological activity, and antioxidant properties can be imparted, and the amount of the functional component and the ceramic component can be increased. The balance is good, and the cost is also favorable.
[0024]
In the heat-adhesive conjugate fiber used in the present invention, among the thermoplastic resins constituting the heat-adhesive conjugate fiber, at least one component uses a polyolefin-based resin and the other component has a higher melting point than the polyolefin-based resin. It is preferable to use a plastic resin. At this time, it is preferable that the thermoplastic resin constituting the heat-adhesive conjugate fiber be a combination having a melting point difference of 10 ° C. or more from the viewpoint of heat adhesion. Further, it is preferable that the polyolefin resin constituting the heat-adhesive conjugate fiber occupies 30% or more of the cross-sectional circumference of the fiber from the viewpoint of heat adhesion.
[0025]
As the thermoplastic resin of the other component used in the present invention, it is preferable to use a thermoplastic resin having a fiber-forming property and capable of being melt-spun using an ordinary melt-spinning apparatus. Any such thermoplastic resin can be used without any particular limitation, and thermoplastic resins such as polyolefin resins, polyester resins, and polyamide resins can be preferably used. Further, these thermoplastic resins may be used alone or in combination of two or more.
[0026]
Examples of the polyolefin resin include high-density polyethylene, linear low-density polyethylene, low-density polyethylene, polypropylene (propylene homopolymer), propylene-based ethylene-propylene copolymer, and propylene-based ethylene-propylene. Propylene-butene-1 copolymer, polybutene-1, polyhexene-1, polyoctene-1, poly4-methylpentene-1, 1,2-polybutadiene and 1,4-polybutadiene can be used. Further, in these homopolymers, α-olefins such as ethylene, butene-1, hexene-1, octene-1 or 4-methylpentene-1 other than the monomers constituting the homopolymer are used as copolymer components. A small amount may be contained. Further, a small amount of other ethylenically unsaturated monomers such as butadiene, isoprene, 1,3-pentadiene, styrene and α-methylstyrene may be contained as a copolymer component. Further, two or more of the above polyolefin-based resins may be used as a mixture. These may be not only polyolefin resins polymerized from a normal Ziegler-Natta catalyst, but also polyolefin resins polymerized from a metallocene catalyst.
[0027]
The polyester resin used as another component is a polymer obtained by condensation polymerization from a diol and a dicarboxylic acid, and the dicarboxylic acid component is terephthalic acid, isophthalic acid, 2,6-naphthalenedicarboxylic acid, adipine Acid, sebacic acid and the like can be used, and as the diol component, ethylene glycol, diethylene glycol, 1,4-butanediol, neopentyl glycol, 1,4-cyclohexanedimethanol and the like can be used. As the polyester, for example, polyethylene terephthalate can be preferably used. Further, these polyesters may be not only homopolymers but also copolymerized polyesters (copolyesters). At this time, as the copolymerization component, a dicarboxylic acid component such as adipic acid, sebacic acid, phthalic acid, isophthalic acid, and 2,6-naphthalenedicarboxylic acid, and a diol component such as diethylene glycol and neopentyl glycol can be used.
[0028]
Examples of polyamide resins include nylon-4, nylon-6, nylon-46, nylon-66, nylon-610, nylon-11, nylon-12, polymethaxylene adipamide (MXD-6), and polyparaxylenedecane. Amide (PXD-12) and polybiscyclohexylmethanedecaneamide (PCM-12) can be used. Further, an amide copolymer having a monomer as a structural unit used in these polyamide resins can be used.
[0029]
In the present invention, of the thermoplastic resin constituting the heat-fusible conjugate fiber, a composite of a functional component and a ceramic component may be blended in at least one component, and the thermoplastic resin component exposed on the fiber surface may be used. It is particularly preferable to mix them. For example, when the heat-fusible conjugate fiber is a conjugate fiber containing a polyolefin-based resin as at least one component, the composite may be blended with the polyolefin-based resin and / or a thermoplastic resin of other components. When the polyolefin resin occupies 30% or more of the fiber cross-sectional circumference, it is preferable to mix the composite with the polyolefin resin. When the composite is blended with the heat-fusible composite fiber, it is necessary to produce a composite of the functional component and the ceramic component in advance and blend the composite.
[0030]
As the heat-fusible conjugate fiber used in the present invention, a parallel-type composite fiber in which two-component thermoplastic resins are arranged in a parallel type and a sheath-core type composite fiber in which two-component thermoplastic resins are arranged in a sheath-core type are used. It can be used (hereinafter, the thermoplastic resin component disposed on the sheath side is referred to as a sheath component, and the thermoplastic resin component disposed on the core side is referred to as a core component). Among them, sheath-core type composite fibers can be preferably used, and it is more preferable that the core component is composed of a thermoplastic resin having a higher melting point than the sheath component. In the case of a sheath-core type composite fiber using a polyolefin-based resin as a sheath component, the core component is preferably a thermoplastic resin having a higher melting point than the polyolefin-based resin. In addition, the shape of the sheath-core type cross section may be any one of a concentric sheath-core type, an eccentric sheath-core type, a multi-core sheath-core type, and a sheath-core type with an irregular cross-sectional shape.
[0031]
By making the cross-sectional shape of the heat-adhesive conjugate fiber used in the present invention a non-circular cross-sectional shape (non-circular cross-sectional shape), the fiber surface area increases compared to a conjugate fiber having a circular cross-section of the same fineness, and the fiber surface It is preferred because it increases the exposure of the complex. Examples of the irregular cross-sectional shape include a star, an ellipse, a triangle, a square, a pentagon, a multilobe, an array, a T-shape, and a horseshoe shape. Note that these cross-sectional shapes are not particularly limited to the shapes shown in FIG.
[0032]
As the heat-adhesive conjugate fiber used in the present invention, a splittable conjugate fiber can be used. The cross-sectional shape of the splittable conjugate fiber is not particularly limited as long as one component composed of a polyolefin resin occupies at least 30% of the fiber cross-sectional circumference. For example, cross-sectional shapes such as a radiation type, a hollow radiation type, and a multilayer type can be given. In particular, it is preferable that the thermoplastic resin constituting the splittable conjugate fiber has a cross-sectional shape in which at least two components are alternately arranged. In addition, it is preferable that the segment of one component does not completely cover the segment of the other adjacent component, and the number of segments after division is preferably about 4 to 32.
[0033]
As a spinning method used in the present invention, a conventionally known method such as a hot melt spinning method, a melt blow method, a spun bond method, or the like can be used. In general, the melt blow method and the spun bond method are production methods including a fiber spinning step, a web forming step, and a nonwoven fabric forming step. As a method of forming the web made of the heat-adhesive conjugate fiber into a nonwoven fabric, a conventionally known method such as a thermal bond method (through-air method, point bond method), a needle punch method, and a water jet method can be used.
[0034]
Examples of the cloth used for the absorbent article of the present invention include a net, a web, a knitted fabric, and a nonwoven fabric, and a nonwoven fabric is particularly preferable. In order to make these cloths liquid-permeable, it is advisable to adjust the size of the holes penetrating the front and back of the cloth and select the type of thermoplastic resin constituting the cloth. Liquid permeability can also be obtained by applying a surface treatment agent such as a hydrophilic agent to the surface of the fabric. In order to make the cloth such as a nonwoven fabric liquid-impermeable, it is preferable to adjust the size of the hole penetrating the front and back of the cloth to a degree that the liquid cannot be transmitted by pressurization and / or heating. Further, by applying a surface treatment agent such as a water repellent to the surface of the cloth, the liquid can be made impermeable. Further, a film or the like may be laminated on the fabric to make it liquid-impermeable, or a film or sheet other than these fabrics may be used.
[0035]
The absorbent article of the present invention includes a fabric made of a heat-adhesive conjugate fiber in which a composite of a functional component and a ceramic component is blended, and the heat-adhesive conjugate fiber contains a functional component and a ceramic component. It is sufficient that the complex is added at least 0.5% by weight, preferably in the range of 0.5 to 20% by weight, and more preferably in the range of 0.7 to 10% by weight. If the amount of addition is in the range of 0.5 to 20% by weight, the spinnability during the production of the heat-adhesive conjugate fiber will be good. The fabric made of the heat-adhesive conjugate fiber has sufficient antibacterial activity and skin protection activity, and exhibits excellent deodorizing performance when an appropriate amount of the fabric is used in an absorbent article. The heat-adhesive conjugate fiber may be used alone, or may be mixed with other fibers to the extent that the effects of the present invention are not impaired.
[0036]
As an example of the absorbent article of the present invention, the configuration and function of the disposable diaper of FIG. 1 will be described. The
[0037]
In order to provide any of a function of providing cushioning properties, a function of diffusing body fluid, a function of preventing body fluid absorbed by the absorbent core layer from returning to the skin side, etc., the cover of the absorbent core layer is provided. There is also an absorbent article having a configuration in which a sheet (generally called a second sheet) is further inserted between the absorbent core layer 3 and the surface cloth 4, or between the absorbent core layer and the cover of the absorbent core layer. In addition, there is also an absorbent article in which a sheet having another function is inserted in order to provide various functions, and the sheet has a multilayer structure.
[0038]
In the absorbent article according to the present invention, in the configuration of the absorbent article described above, at least a part of the front fabric 4 and / or the
[0039]
By arranging, in an absorbent article, a fabric made of a heat-adhesive conjugate fiber in which a composite of a functional component and a ceramic component is blended, the growth of bacteria on the surface fabric 4 is suppressed, and the excrement is decomposed. The accompanying generation of off-flavor can be suppressed. Further, even after the bodily fluid permeates through the surface cloth 4 and is absorbed by the absorbent core layer 2, the odor substance is discharged from the worn absorbent article by the cloth arranged on the surface cloth 4 and / or the
[0040]
Further, since the functional ingredient having antiallergic and antioxidant properties is in contact with the skin, the skin can be positively protected from disorders such as allergy and rash.
[0041]
【Example】
Hereinafter, the present invention will be described in detail with reference to examples, but the present invention is not limited to these examples. In each example, the nonwoven fabric performance evaluation was performed by the following method.
[0042]
(Melt flow rate of resin)
The melt flow rate (MFR, MI) of the resin was measured under the following conditions in accordance with JIS K7210.
MFR: Condition 14 in Table 1 of JIS K7210
MI: Condition 4 in Table 1 of JIS K7210
[0043]
(Intrinsic viscosity)
It is a value measured at a concentration of 0.5 g / 100 ml and a temperature of 20 ° C. using an equal weight mixed solvent of phenol and ethane tetrachloride.
[0044]
(Positive fineness)
JIS L 1015 Test method for chemical fiber staples Fineness The fineness calculated by converting the fiber to 10,000 m based on Method A is shown.
[0045]
(Deodorant test I)
The deodorizing performance of the nonwoven fabrics obtained in Examples and Comparative Examples was measured as follows using ammonia as an odor component. A predetermined amount (3 g) of nonwoven fabric is put in a Tedlar bag (volume: 5 liters) and sealed, and then air containing a predetermined concentration of odor component is injected into the Tedlar bag using a syringe so that the total gas amount becomes 3 liters. did. After a certain period of time from the injection of the gas, the gas in the Tedlar bag was directly measured using a gas detector tube (3La, 3L type for ammonia, manufactured by Gastech Co., Ltd.), and the odor component removal rate was determined by the following equation. .
Removal rate (%) = ｛(C 0 -C) / C 0 ｝ × 100
(C 0 : Initial concentration, C: NH after a certain time has passed 3 concentration)
[0046]
(Deodorant test II)
Using a commercially available disposable diaper, the surface fabric was removed from the diaper, and the fabrics obtained in Examples and Comparative Examples were attached to the portions to produce an absorbent article (disposable diaper). The deodorant test II was performed as follows using this.
The absorbent article was impregnated with 50 ml of human urine and stored in a sealed bag, and after 24 hours, the presence or absence of odor in the sealed bag was determined. The judgment was made by five subjects.
(Criteria for Deodorant Test II)
◎ (Excellent): Almost no smell
○ (good): Slightly smelled, but not bothersome.
Δ (normal): Slightly unpleasant odor.
X (poor): smells unpleasant.
[0047]
(Antibacterial deodorization test)
Under the following conditions, the antibacterial and deodorant properties of each sample were examined.
Test item: Antibacterial test
Test strain: Staphylococcus aureus ATCC 6538P
Test method: According to JIS L 1902 quantitative test (unified test method).
Test results:
-Inoculation count [A] is 2.5 × 10 4 , LogA = 4.4
-The number of unprocessed cloth bacteria [B] is 1.6 × 10 7 , Log B = 7.2
-Viable cell count after culture [C], log C
-LogB-logA = 2.8> 1.5 (test is valid)
-Bacteriostatic activity value = log B-log C (2.2 or more, antibacterial and deodorant)
[0048]
(Skin irritation test)
The nonwoven fabrics obtained in the examples and the comparative examples were cut into a circle having a radius of 5 mm, and this was stuck on the skin of 20 subjects for 24 hours, and the state of the skin after 24 hours was visually observed. At this time, the number of persons whose skin roughness was confirmed was counted and evaluated according to the following criteria. (Criteria for skin irritation)
○ (good): No more than three people were able to confirm rough skin.
△ (normal): 4 to 5 people with rough skin confirmed.
X (poor): Six or more people who could see rough skin.
[0049]
Example 1
The preparation of the composite was performed as follows. As a ceramic component, 400 parts by weight of silica having an average particle size of 325 mesh under, and as a functional component, 60% by weight of tea catechin (epigallocatechin, epigallocatechin gallate, epicatechin and epicatechin gallate having a total amount of about 60%) Then, 430 parts by weight of a tea-derived catechin preparation (wt.%) Was dry-mixed, and 200 parts by weight of an aluminum phosphate aqueous solution having a concentration of 25 wt. The paste was mixed with 50 parts by weight of a colloidal liquid of colloidal silica (solid content: 40% by weight) to make the pH neutral. At this point, agglomeration gradually occurred, so the mixture was transferred to a crucible while handling was possible, dried, and then dehydrated and hydrolyzed at 100 to 300 ° C. This was finely pulverized to obtain a composite.
[0050]
Preparation of the composite fiber was performed as follows. A composition comprising 7% by weight of the above composite and 93% by weight of crystalline high-density polyethylene (ethylene homopolymer, melting point 131 ° C., MI 16 g / 10 min) was used as a sheath component, and crystalline polypropylene (propylene) was used as a core component. Using a homopolymer, melting point: 163 ° C., MFR: 16 g / 10 min), composite spinning was performed at a spinning temperature of 250 ° C. by a sheath-core composite spinning device (using a sheath-core spinneret). The obtained undrawn yarn was 12 dtex. Using this undrawn yarn, drawing was performed at a drawing temperature of 90 ° C. and a drawing ratio of 4.5 by a roll-type drawing device, and the obtained drawn yarn was cut with a cutter to obtain staple-like conjugate fibers. The obtained conjugate fiber was a sheath-core conjugate fiber having a cross section shown in FIG. 2 and had a positive fineness of 3.3 dtex and a fiber length of 51 mm. Table 1 shows the resin composition of the sheath core component, the cross-sectional shape, and the amount of the composite added.
[0051]
Fabrication of the nonwoven fabric was performed as follows. Using the obtained conjugate fiber, a web having a predetermined basis weight was produced with a card machine, and the web was passed through a through-air processing machine set at 135 ° C. and thermally bonded to obtain a nonwoven fabric. Using this nonwoven fabric as a fabric, deodorant test method I, deodorant test method II, antibacterial deodorant test and skin irritation test were performed. Table 1 shows the test results.
[0052]
Example 2
As in Example 1, except that an ethylene-butene-propylene copolymer (ethylene content 4% by weight,
[0053]
Example 3
Using a high-density polyethylene (ethylene homopolymer, melting point 131 ° C., MI 24 g / 10 min) as a sheath component and polyethylene terephthalate (intrinsic viscosity [η] = 0.635 dl / g) as a core component, Except for changing the addition amount, a heat-adhesive conjugate fiber and a nonwoven fabric were produced in accordance with Example 1. Table 1 shows the test results.
[0054]
Example 4
Spinning (16) was performed in accordance with the production of the conjugate fiber of Example 1 except that the cross-sectional shape of the conjugate fiber was changed using a star-shaped spinneret, the discharge amount of the resin was increased, and the cut length of the drawn yarn was changed. (5dtex undrawn yarn), drawing and cutting to produce a composite fiber. The obtained conjugate fiber had a star-shaped irregular cross section as shown in FIG. 3, a cut length of 38 mm, and a fineness of 4.5 dtex. Using this composite fiber, a nonwoven fabric was produced in accordance with Example 1. Table 1 shows the test results.
[0055]
Example 5
A heat-adhesive conjugate fiber and a nonwoven fabric were produced in accordance with Example 1 except that the drawn yarn fineness was 4.5 dtex, and the amount of the composite added was changed. Table 1 shows the test results.
[0056]
Example 6
Copolymerized polyester (intrinsic viscosity [η] = 0.726 dl / g) was used as the sheath component, and polyethylene terephthalate (intrinsic viscosity [η] = 0.635 dl / g) was used as the core component. Was changed, the fineness was set to 4.6 dtex, and the basis weight of the nonwoven fabric was changed, and a composite fiber and a nonwoven fabric were produced in accordance with Example 1. Table 1 shows the test results.
[0057]
Comparative Example 1
As a sheath component, high-density polyethylene (ethylene homopolymer, MI 16 g / 10 min, melting point 131 ° C.) without a complex was used, and as a core component, polypropylene (propylene homopolymer, MFR 16 g / 10 min, melting point 163 ° C.) was used. A heat-adhesive conjugate fiber and a nonwoven fabric were produced in accordance with Example 1 except that they were used. Table 1 shows the test results.
[0058]
Example 7
Nonwoven fabric according to Example 1, except that a fiber obtained by mixing the heat-adhesive conjugate fiber obtained in Example 1 and the heat-adhesive conjugate fiber obtained in Comparative Example 1 in a ratio of 3: 7 was used. Was prepared. Table 1 shows the test results.
[0059]
Example 8
A split type heat-adhesive conjugate fiber was produced in accordance with Example 1 except that the sectional shape of the conjugate fiber was changed using a split type spinneret. Using the obtained heat-adhesive conjugate fiber, a web having a predetermined basis weight is produced with a card machine, and the web is placed on a belt conveyor having a belt made of 80-mesh plain weave. A high-pressure water stream was jetted onto the web from a nozzle plate provided with a large number of nozzles at a pitch of 1 mm. First, the web is preliminarily treated (second stage) with a water flow of 2 MPa, then further divided into four stages with a water flow of 6 MPa, and then the entangled web is inverted and divided into four stages with a water flow of 6 MPa. The heat-bondable conjugate fiber was split and the split fibers were entangled at the same time to produce a nonwoven fabric made of ultrafine fibers. Table 1 shows the test results. In addition, since the obtained nonwoven fabric sufficiently exhibited the performance of the functional component, it was found that elution of the composite by water did not occur.
[0060]
Comparative Example 2
A tea catechin 60% by weight product (a tea-derived catechin preparation containing epigallocatechin, epigallocatechin gallate, epicatechin and epicatechin gallate in total of about 60% by weight) was added alone to the sheath component at 7% by weight. A heat-adhesive fiber was produced according to Example 1. When spinning was performed under these conditions, yarn breakage occurred frequently and smoke was also found, so spinning was stopped. For this reason, undrawn yarn could not be collected. It was confirmed that when the spinning was performed with the addition of tea catechin alone, the spinnability was significantly deteriorated at a normal spinning temperature.
[0061]
[Table 1]
From the results of the deodorant test I, the deodorant test II, and the antibacterial and deodorant test, it was found that a catechin derived from tea was used as a functional component, and a thermoadhesive composite fiber in which a composite of the catechin and a ceramic component was blended was used. It has been found that the absorbent article of the present invention in which the cloth is disposed has excellent deodorizing properties and antibacterial and deodorizing properties. It can be seen that when saponins, tea leaf powder, tea leaf extract, and tannic acid are used as the functional components, an absorbent article having excellent deodorant properties and antibacterial and deodorant properties can be obtained.
[0063]
【The invention's effect】
Thermal adhesion in which a composite of at least one functional component selected from the group consisting of catechins, saponins, tea leaf powder, tea leaf extract and tannic acid and a ceramic component is blended with the absorbent article of the present invention. By using a fabric made of the conductive composite fiber, an absorbent article excellent in deodorant properties and antibacterial deodorant properties can be obtained. By arranging a cloth made of a heat-adhesive conjugate fiber containing 0.5 to 20% by weight of the composite as a surface cloth in an absorbent article, the skin is excellent in skin irritation and allergic, rash, rough skin, etc. And an absorbent article excellent in deodorant properties and antibacterial deodorant properties is obtained. In addition, by using a composite of a functional component and a ceramic component, decomposition can be suppressed even at a high spinning temperature, so that fiber can be satisfactorily formed by using a general-purpose thermoplastic resin as a raw material resin. Furthermore, by using a composite of a functional component and a ceramic component, elution with water can be prevented, and the performance of the functional component can be sufficiently exhibited.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a surface cloth side of a disposable diaper as one embodiment of the present invention.
FIG. 2 is a cross-sectional view of a sheath-core composite fiber.
FIG. 3 is a cross-sectional view of a star-shaped cross-section composite fiber.
[Explanation of symbols]
1 disposable diapers
2 Absorbing core layer
3 Covering the absorbent core layer
4 surface cloth
5 Back fabric
6 sheath component to which composite of functional component and ceramic component is added
7 core components
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002250858A JP2004089234A (en) | 2002-08-29 | 2002-08-29 | Absorbent articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002250858A JP2004089234A (en) | 2002-08-29 | 2002-08-29 | Absorbent articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2004089234A true JP2004089234A (en) | 2004-03-25 |
Family
ID=32057586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002250858A Withdrawn JP2004089234A (en) | 2002-08-29 | 2002-08-29 | Absorbent articles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2004089234A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008108476A1 (en) * | 2007-03-01 | 2008-09-12 | Daiki Co., Ltd. | Absorber, sanitary goods utilizing the same and process for producing them |
| JP2010194254A (en) * | 2009-02-27 | 2010-09-09 | Kao Corp | Absorbent article |
| US8232445B2 (en) | 2005-08-25 | 2012-07-31 | The Procter & Gamble Company | Absorbent article comprising condensed tannin |
| WO2017221996A1 (en) * | 2016-06-24 | 2017-12-28 | 倉敷繊維加工株式会社 | Carrier body, attached sheet member, air filter, carrier body production method, and attached sheet member production method |
-
2002
- 2002-08-29 JP JP2002250858A patent/JP2004089234A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8232445B2 (en) | 2005-08-25 | 2012-07-31 | The Procter & Gamble Company | Absorbent article comprising condensed tannin |
| WO2008108476A1 (en) * | 2007-03-01 | 2008-09-12 | Daiki Co., Ltd. | Absorber, sanitary goods utilizing the same and process for producing them |
| US8581018B2 (en) | 2007-03-01 | 2013-11-12 | Daiki Co., Ltd. | Absorber comprising pulp, tea dregs and water absorbent resin; sanitary articles using the absorber and production method thereof |
| JP2010194254A (en) * | 2009-02-27 | 2010-09-09 | Kao Corp | Absorbent article |
| WO2017221996A1 (en) * | 2016-06-24 | 2017-12-28 | 倉敷繊維加工株式会社 | Carrier body, attached sheet member, air filter, carrier body production method, and attached sheet member production method |
| JP6289781B1 (en) * | 2016-06-24 | 2018-03-07 | 倉敷繊維加工株式会社 | Carrier, attachment sheet member, air filter, carrier manufacturing method, and attachment sheet member manufacturing method |
| CN109312209A (en) * | 2016-06-24 | 2019-02-05 | 仓敷纤维加工株式会社 | Carrier, film-adhered member, air filter, method for producing a carrier, and method for producing a film-adhering member |
| CN109312209B (en) * | 2016-06-24 | 2021-09-28 | 仓敷纤维加工株式会社 | Carrier, film-attached member, air filter, method for producing carrier, and method for producing film-attached member |
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