JP2004285548A - Functional fiber, fiber structural material of the same, and absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a functional fiber comfortable when used as a product which is contacted with the human body, scarcely, in detail, irritating the skin, and having properties of caring for the skin, namely, preventing the skin from being roughed or promoting a recovery function by protecting the skin, to provide a fiber structural material of the same, and to provide an absorbent article. <P>SOLUTION: This functional fiber is formed so that a moisture-absorbing agent and a compound having a phospholipid-like structure are combinedly mixed into or adhered to the fiber, wherein a polysaccharide, such as chitosan or arabinogalactan, is preferably used as the moisture-absorbing agent. The fiber structural material contains the functional fiber as at least a part thereof. The absorbent article is given by using the fiber structural material. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【００１２】
［上記一般式（１）中、Ｘは２価の有機残基を示し、Ｙは炭素数１〜６のアルキレンオキシ基を示し、Ｚは水素原子もしくはＲ^５−Ｏ−（Ｃ＝Ｏ）−（但しＲ^５は炭素数１〜１０のアルキル基または炭素数１〜１０のヒドロキシアルキル基を示す。）を示す。また、Ｒ^１は水素原子もしくはメチル基を示し、Ｒ^２、Ｒ^３およびＲ^４は同一もしくは異なる基であって、水素原子または炭素数１〜６のアルキル基またはヒドロキシアルキル基を示す。ｍは０〜２０の整数を示す。ｎは１〜４の整数を示す。］
【００１３】
係るリン脂質類似構造物は特に高いスキンケア性を有するのみならず、細菌類が付着し難く、かつ血液適合性にも優れ、スキンケア布帛としての高い特性を備えているからである。
【００１４】
本発明でいうスキンケア性とは外部からの刺激から皮膚を保護する、又は荒れた皮膚を正常に回復させる機能をいう。
【００１５】
本発明におけるリン脂質類似ポリマー及び吸湿剤の付与量は特に限定するものではないが、それぞれ０．０１％ｏ．ｗ．ｆ 〜 ２０％ｏ．ｗ．ｆ （ｏ．ｗ．ｆはｏｎ ｔｈｅ ｗｅｉｇｈｔ ｏｆ ｆｉｂｅｒ）であることが好ましい。この範囲より低ければ、本発明の効果が得られにくくなり、この範囲より高ければ繊維構造物の風合い等に問題が生じ易いからである。
【００１６】
本発明に係る繊維の材質は特に限定するものではなく、綿や絹等の天然繊維、ポリエステルやポリアミドの合成繊維であってもよいが、皮膚との摩擦が小さく、風合いが柔らかいものが好ましい。
【００１７】
本発明にかかる吸着剤、リン脂質類似構造物は、繊維を構成するポリマーに練り込むことによって含有させてもよい。ポリマーに練り込むことにより、特に洗濯耐久性を要求される用途に用いて長期間効果を発揮するからである。
【００１８】
また繊維化後及び繊維構造物にパディング等により付着させてもよい。表面付着させることにより、皮膚に接触する部分に吸着剤、リン脂質類似構造物が分散され、練り込む場合に比して少量で効果を発揮でき、また工程通過性についても練り込む場合より優れているからである。繊維構造物が短繊維不織布の場合には、不織布製造後あるいは吸収性物品などの製品を生産時にスプレー付与などにより付着させてもよい。この場合にも練り込む場合に比して少量で効果を発揮できる点で好ましい。
【００１９】
本発明でいう繊維構造物とは、織物、編物、不織布等に代表される、繊維を用いて２次元又は３次元的な構造を有するものを言う。
【００２０】
本発明に係る繊維構造物の用途は、特に限定されるものではないが、シーツ類や帽子、手袋、レッグニット等の他、インナーウェア、衛材等の肌に接触するアイテムとして特に効果が発揮される。また、吸収性物品については特に好ましく使用される。吸収性物品の代表例としては、紙おむつ、生理用ナプキン、ライナー、汗わきパッドなどであり、特に紙おむつ、生理用ナプキン、ライナー、汗わきパッドの表面材として本発明の繊維構造物が好ましく使用される。肌に接触する面以外についても、紙おむつのギャザー等の肌に接触して用いられたり、又は長時間あるいは繰り返し使用されるものにも好適である。
【００２１】
【実施例】
以下具体的実施例を挙げて説明するが、本発明はこれら実施例に限定されるものではない。また、実施例中の部は重量部を意味する。
【００２２】
＜スキンケア性評価方法＞
（１）試験サンプルを６ｍｍφの大きさに切り抜き、フィンチャンバー （大正製薬製）にセットした。
（２）濃度０．１％、０．３％、０．７％に調整したドデシル硫酸ナトリウム（ＳＤＳ）水溶液を１０μＬずつそれぞれ試験布に含浸させた。
（３）成人男性（５名）の背部（脊椎椎部）に閉塞貼付した。
（４）貼付２４時間後に試験サンプルを背部より剥離した。
（５）剥離１時間後および２４時間後に皮膚の状態を肉眼にて判定した。判定基準は以下の通りである。
【００２３】
（皮膚判定基準）
皮膚反応は、試験実施者とは別の判定者が下記表１の基準に従い判定後、反応に評点を与え、その点数を須貝らにより考案された下記式（Ａ）に導入して皮膚刺激指数を算出した。
皮膚刺激指数 ＝ （総評点和／被験者数） × １００……………（Ａ）
上記式Ａで示される皮膚刺激指数が低いほど、優れたスキンケア性を有する。
【００２４】
【表１】

【００２５】
（実施例１）
ポリエチレン（ＰＥ）／ ポリエステル（ＰＥＴ）のシース／コア構造を有する２．２ｄｔｅｘ×４４ｍｍをカードウェッブとし、１４０℃で５秒熱処理したエアースルー不織布３０ｇ／ｍ^２を得た。得られた不織布に、リン脂質類似構造物としてＬｉｐｉｄｕｒｅ（Ｒ） ＭＦ−３（日本油脂（株）製）を０．２５％ｏ．ｗ．ｆ（固形分）、吸湿剤として多糖類であるキトサンを０．５％ｏ．ｗ．ｆ（固形分）をパディングにより塗布した。得られた不織布のスキンケア性評価結果を表２に示す。得られた処理不織布は、リン脂質類似ポリマー及び吸湿剤を塗布していない下記比較例１の不織布と比して明確に優れたスキンケア性を有するものであった。吸収性物品として、前記の処理不織布を肌に直接触れる面であるトップシートに使用し、ポリエチレンフィルムからなる液不透過性のバックシート、吸収性コアを組合せて、パンツ型紙おむつを作製した。優れたスキンケア性を有する紙おむつが得られた。
【００２６】
（実施例２）
吸湿剤としてアラビノガラクタンを０．５％ｏ．ｗ．ｆ（固形分）用いる以外は実施例１と同様の方法で処理不織布を得た。得られた処理不織布のスキンケア性評価結果を表２に示す。得られた処理不織布は、実施例１と同様に下記比較例１の不織布と比して明確に優れたスキンケア性を有するものであった。前記の処理不織布を実施例１と同様にトップシートに使用して、紙おむつを作成した。優れたスキンケア性を有する紙おむつが得られた。
【００２７】
（実施例３）
まず、次の方法で吸湿性ポリマーを得た。
メタクリル酸／ｐ−スチレンスルホン酸ソーダ＝７０／３０の水溶性重合体３５０部及び硫酸ナトリウム３５部を６５００部の水に溶解し、櫂型攪拌機付きの重合槽に仕込んだ。次に、アクリル酸メチル２７５０部及びジビニルベンゼン３３０部に２，２’−アゾビス−（２，４−ジメチルバレロニトリル）１５部を溶解して重合槽に仕込み、４００ｒｐｍの攪拌下、６０℃で２時間重合し、重合率８８％の共重合体を得た。該重合体１００部を水９００部中に分散し、これに１１０部の苛性ソーダを添加し、９０℃、２．５時間反応を行い、アクリル酸メチルのメチルエステル部を加水分解することによりカルボキシル基４．６ミリ当量／ｇを有した架橋重合体を得た。得られた架橋重合体を吸湿剤として０．５ｏ．ｗ．ｆ（固形分）使用する以外は実施例１と同様の方法で処理不織布を得た。得られた処理不織布のスキンケア性評価結果を表２に示す。得られた処理不織布は、実施例１と同様に下記比較例１の不織布と比して明確に優れたスキンケア性を有するものであった。前記の処理不織布を実施例１と同様にトップシートに使用して、紙おむつを作成した。優れたスキンケア性を有する紙おむつが得られた。
【００２８】
（実施例４）
ポリエステルよりなる目付け５０ｇ／ｍ^２スパンボンド不織布にリン脂質類似構造物としてＬｉｐｉｄｕｒｅ ＭＦ−３（日本油脂（株）製）を０．２５％ｏ．ｗ．ｆ（固形分）、吸湿剤としてアラビノガラクタンを０．５％ｏ．ｗ．ｆ（固形分）をパディングにより塗布した。得られた処理スパンボンド不織布は、実施例２のものと同様に下記比較例１の不織布と比して明確に優れたスキンケア性を有するものであった。前記の処理スパンボンド不織布を実施例１と同様にトップシートに使用して、紙おむつを作成した。優れたスキンケア性を有する紙おむつが得られた。
【００２９】
（比較例１）
実施例１と同様にポリエチレン（ＰＥ）／ ポリエステル（ＰＥＴ）のシース／コア構造を有する２．２ｄｔｅｘ×４４ｍｍを原綿として３０ｇ／ｍ^２の不織布を得た。得られた不織布に何らリン脂質類似構造物及び吸湿剤のいずれも付与することなく、スキンケア性評価をおこなった。スキンケア性評価結果を表２に示す。得られた不織布は実施例１〜４の処理不織布と比較して、スキンケア性の劣るものであった。
【００３０】
（比較例２）
実施例１と同様にポリエチレン（ＰＥ）／ ポリエステル（ＰＥＴ）のシース／コア構造を有する２．２ｄｔｅｘ×４４ｍｍを原綿として３０ｇ／ｍ^２の不織布を得た。得られた不織布に、リン脂質類似構造物（Ｌｉｐｉｄｕｒｅ（Ｒ） ＭＦ−３）のみを０．２５％ｏ．ｗ．ｆ（固形分）付与した。得られた処理不織布のスキンケア性評価結果を表２に示す。得られた処理不織布は未処理不織布（比較例１）との明確な差は現れず、十分なスキンケア性は得られなかった。
【００３１】
【表２】

【００３２】
【発明の効果】
本発明によれば、衣類や医療、健康維持用品、衛材その他身体に接触するアイテムに用いて好適な、更に詳しくは皮膚に対する刺激が少なく、皮膚を保護して肌荒れを防止又は回復機能を促進する機能性繊維及びその繊維構造物を提供することが可能となった。また、前記の繊維構造物を用いて優れたスキンケア性を有する吸収性物品の提供が可能となった。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a functional fiber suitable for use in an article that comes into contact with the body, and more particularly, to a functional fiber which has little irritation to the skin and protects the skin to prevent rough skin or promote a recovery function, and a fiber structure thereof. In addition, the present invention relates to an absorbent article using the fiber structure.
[0002]
[Prior art]
2. Description of the Related Art In recent years, interest in skin health has been increasing, and not only cosmetics but also fibers have been required to be gentle to the skin and have a function of maintaining health, that is, a skin care property. Various attempts have been made to meet the needs of these markets. For example, it is known to provide a fiber with a phospholipid-like structure for imparting skin care properties (for example, see Patent Documents 1 and 2). According to the literature, the phospholipid-like structure forms a moisture film on the skin surface, and promotes or complements the barrier function of the skin (prevention of water loss), thereby enabling the moisture in the stratum corneum and the natural moisturizing component (NMF) It is thought that the spill was prevented and the skin was restored to a normal state. However, in practical use, it cannot be said that the effect of the polymer alone can effectively restore skin functions. In other words, in order to restore healthy skin, it is necessary to make the skin turnover a state capable of performing a normal cycle.However, when the polymer is used, that is, only by providing a normal barrier function, it is necessary to recover the skin. Since it takes time, once the polymer is removed, the recovered water evaporates and there is a problem that the skin returns to its original roughened state.
[0003]
[Patent Document 1]
JP-A-2002-348778 (paragraph numbers (0008 to 0016, etc.))
[Patent Document 2]
JP-A-2002-348779 (paragraph numbers (0007 to 0019 and the like))
[0004]
[Problems to be solved by the invention]
An object of the present invention is to provide a functional fiber having a skin care property such as having less irritating property to the skin and recovering and preventing rough skin, a fiber structure thereof, and an absorbent article using the fiber structure. Is what you do.
[0005]
[Means for Solving the Problems]
The present inventors have conducted intensive studies to solve the above problems, and as a result, by using a moisture absorbent and a phospholipid-like structure together, a functional fiber, a fiber structure, and an absorbent article having high skin care properties are obtained. This led to the present invention.
[0006]
That is, the present invention has the following configurations.
1. A functional fiber characterized in that a moisture absorbent and a phospholipid-like structure are contained or attached in combination.
2. 2. The functional fiber according to the above item 1, wherein the hygroscopic agent is a polysaccharide.
3. 3. The functional fiber according to the above item 2, wherein the polysaccharide is chitosan.
4. 3. The functional fiber according to the above item 2, wherein the polysaccharide is arabinogalactan.
5. The hygroscopic agent is a polystyrene-based, polyacrylonitrile-based, polyacrylate-based, or polymethacrylate-based vinyl polymer, and includes a sulfonic acid group, a carboxylic acid group, a phosphate group, or at least a metal salt thereof. 2. The functional fiber according to the above item 1, characterized in that it is a crosslinked polymer having one kind of hydrophilic group and crosslinked with any of divinylbenzene, triallyl isocyanate or hydrazine.
6. A fibrous structure comprising at least a part of the functional fiber according to any one of the first to fifth aspects.
7. An absorbent article, wherein the fiber structure according to the sixth aspect is used at least in part.
8. 8. The absorbent article according to the above item 7, wherein the fibrous structure is a nonwoven fabric, and the nonwoven fabric is used on a surface of the absorbent article that comes into contact with the skin.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail.
The following reasons can be considered as the reason for having high skin care property by using a hygroscopic agent and a phospholipid-like structure together.
First, it is considered that the moisturizing power of the phospholipid-like structure is insufficient. That is, although the phospholipid-like structure has a high barrier property, it is not possible to recover the moisture of the skin when the dried cloth having poor hygroscopicity comes into contact with the skin, and as a result, it is not possible to secure normal skin turnover. Conceivable.
Secondly, it is considered that the hydrophilic group of the phospholipid-like structure that migrates to the skin and forms a film is more oriented on the film surface due to the presence of the highly hygroscopic fabric, forming a uniform film structure. .
[0008]
The moisture absorbent according to the present invention may be a natural moisturizing component such as an amino acid or pyrrolidocan carboxylic acid generally used as a skin moisturizing agent, but may be a polysaccharide, and further may be chitosan or arabino. Preferably it is galactan.
[0009]
Further, the moisture absorbent according to the present invention is a polystyrene-based, polyacrylonitrile-based, polyacrylate-based, polymethacrylate-based vinyl polymer, sulfonic acid group, carboxylic acid group, phosphate group, or It may be a crosslinked polymer having at least one hydrophilic group of those metal salts and crosslinked with any of divinylbenzene, triallyl isocyanate or hydrazine. This is because these agents exhibit particularly excellent skin care properties when used in combination with a phospholipid-like structure. The reason for this is considered to be that these agents have hygroscopicity as well as antibacterial properties, and are suitable for protecting the skin which has become rough and which is easy for bacteria and the like from the outside to enter.
[0010]
The phospholipid-like structure is preferably a polymer having the following structure.
[0011]
Embedded image

[0012]
[In the above general formula (1), X represents a divalent organic residue, Y represents an alkyleneoxy group having 1 to 6 carbon atoms, and Z represents a hydrogen atom or R ⁵ —O— (C ＝ O) —. (wherein ^{R 5} represents. a hydroxyalkyl group having 1 to 10 carbon alkyl group or a C 1-10 carbon atoms). Further, R ¹ represents a hydrogen atom or a methyl group, and R ² , R ³ and R ⁴ are the same or different groups and represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms or a hydroxyalkyl group. m shows the integer of 0-20. n shows the integer of 1-4. ]
[0013]
This is because such a phospholipid-like structure not only has a particularly high skin care property, but also is hard to adhere bacteria, has excellent blood compatibility, and has high properties as a skin care cloth.
[0014]
The skin care property referred to in the present invention means a function of protecting the skin from external irritation or recovering rough skin normally.
[0015]
The application amounts of the phospholipid-like polymer and the hygroscopic agent in the present invention are not particularly limited, but are 0.01% o. w. f-20% o. w. f (owf is on the weight of fiber). If it is lower than this range, it is difficult to obtain the effects of the present invention, and if it is higher than this range, problems tend to occur in the feeling of the fiber structure.
[0016]
The material of the fiber according to the present invention is not particularly limited, and may be a natural fiber such as cotton or silk, or a synthetic fiber of polyester or polyamide. However, a material that has low friction with the skin and has a soft feel is preferable.
[0017]
The adsorbent and the phospholipid-like structure according to the present invention may be contained by kneading the polymer constituting the fiber. By kneading it into the polymer, it is particularly effective for applications requiring washing durability and exerts a long-term effect.
[0018]
Further, it may be attached after fibrillation and to the fibrous structure by padding or the like. By adhering to the surface, the adsorbent, a phospholipid-like structure is dispersed in the part that comes into contact with the skin, and the effect can be exerted in a small amount as compared with kneading, and the process passability is also better than when kneading. Because there is. When the fibrous structure is a short-fiber non-woven fabric, a product such as an absorbent article may be attached after production of the non-woven fabric or during production by spraying or the like. This case is also preferable in that the effect can be exhibited with a small amount as compared with the case of kneading.
[0019]
The fiber structure referred to in the present invention refers to a structure having a two-dimensional or three-dimensional structure using fibers, such as a woven fabric, a knitted fabric, and a nonwoven fabric.
[0020]
The use of the fiber structure according to the present invention is not particularly limited, but is particularly effective as an item that comes into contact with the skin, such as sheets, hats, gloves, and leg knits, as well as innerwear and sanitary materials. Is done. Absorbent articles are particularly preferably used. Representative examples of absorbent articles include disposable diapers, sanitary napkins, liners, sweat pads, and the like. In particular, the fiber structure of the present invention is preferably used as a surface material for disposable diapers, sanitary napkins, liners, and sweat pads. You. The surface other than the surface that comes in contact with the skin is also suitable for use in contact with the skin, such as gathers for disposable diapers, or those that are used for a long time or repeatedly.
[0021]
【Example】
Hereinafter, the present invention will be described with reference to specific examples, but the present invention is not limited to these examples. Parts in the examples mean parts by weight.
[0022]
<Skin care evaluation method>
(1) A test sample was cut out to a size of 6 mmφ and set in a fin chamber (Taisho Pharmaceutical).
(2) Each of the test cloths was impregnated with 10 μL of an aqueous solution of sodium dodecyl sulfate (SDS) adjusted to concentrations of 0.1%, 0.3%, and 0.7%, respectively.
(3) Obstruction was applied to the back (vertebrae) of adult men (5).
(4) The test sample was peeled from the back 24 hours after application.
(5) After 1 hour and 24 hours after peeling, the condition of the skin was visually determined. The criteria are as follows.
[0023]
(Skin criteria)
The skin reaction is evaluated by a judge different from the tester according to the criteria shown in Table 1 below, and the reaction is given a score. The score is introduced into the following formula (A) devised by Sugai et al. Was calculated.
Skin irritation index = (total score total / number of subjects) x 100 ... (A)
The lower the skin irritation index represented by the above formula A, the better the skin care properties.
[0024]
[Table 1]

[0025]
(Example 1)
A 2.2 dtex × 44 mm having a sheath / core structure of polyethylene (PE) / polyester (PET) was used as a card web, and heat-treated at 140 ° C. for 5 seconds to obtain an air-through nonwoven fabric of 30 g / m ² . Lipidure® MF-3 (manufactured by NOF CORPORATION) as a phospholipid-like structure was 0.25% o. w. f (solid content), 0.5% o.o. of chitosan which is a polysaccharide as a moisture absorbent. w. f (solid content) was applied by padding. Table 2 shows the evaluation results of the skin care properties of the obtained nonwoven fabric. The resulting treated nonwoven fabric had clearly superior skin care properties as compared with the nonwoven fabric of Comparative Example 1 below, to which the phospholipid-like polymer and the hygroscopic agent were not applied. As an absorbent article, the treated nonwoven fabric was used for a top sheet that directly touches the skin, and a liquid-impermeable back sheet made of a polyethylene film and an absorbent core were combined to produce a pants-type paper diaper. A disposable diaper having excellent skin care properties was obtained.
[0026]
(Example 2)
0.5% o. Arabinogalactan as a moisture absorbent. w. A treated nonwoven fabric was obtained in the same manner as in Example 1 except that f (solid content) was used. Table 2 shows the results of evaluating the skin care properties of the obtained nonwoven fabric. The obtained treated nonwoven fabric had a clearly superior skin care property as compared with the nonwoven fabric of Comparative Example 1 described below, as in Example 1. The treated nonwoven fabric was used for a top sheet in the same manner as in Example 1 to prepare a disposable diaper. A disposable diaper having excellent skin care properties was obtained.
[0027]
(Example 3)
First, a hygroscopic polymer was obtained by the following method.
350 parts of a water-soluble polymer of methacrylic acid / sodium p-styrenesulfonate = 70/30 and 35 parts of sodium sulfate were dissolved in 6500 parts of water, and charged in a polymerization tank equipped with a paddle-type stirrer. Next, 15 parts of 2,2′-azobis- (2,4-dimethylvaleronitrile) were dissolved in 2750 parts of methyl acrylate and 330 parts of divinylbenzene, and the mixture was charged into a polymerization tank and stirred at 60 ° C. under stirring at 400 rpm. Polymerization was performed for an hour to obtain a copolymer having a conversion of 88%. 100 parts of the polymer is dispersed in 900 parts of water, 110 parts of caustic soda is added thereto, the reaction is carried out at 90 ° C. for 2.5 hours, and the carboxyl group is obtained by hydrolyzing the methyl ester of methyl acrylate. A crosslinked polymer having 4.6 meq / g was obtained. The obtained crosslinked polymer was used as a moisture absorbent at 0.5 o. w. A treated nonwoven fabric was obtained in the same manner as in Example 1 except that f (solid content) was used. Table 2 shows the results of evaluating the skin care properties of the obtained nonwoven fabric. The treated nonwoven fabric had a clearly superior skin care property as compared with the nonwoven fabric of Comparative Example 1 described below, as in Example 1. The treated nonwoven fabric was used for a top sheet in the same manner as in Example 1 to prepare a disposable diaper. A disposable diaper having excellent skin care properties was obtained.
[0028]
(Example 4)
A 50 g / m ² spunbond nonwoven fabric made of polyester and 0.25% o.p. of Lipidure MF-3 (manufactured by NOF Corporation) as a phospholipid-like structure. w. f (solid content), arabinogalactan 0.5% o. w. f (solid content) was applied by padding. The resulting treated spunbonded nonwoven fabric had clearly superior skin care properties as compared with the nonwoven fabric of Comparative Example 1 described below, as in the case of Example 2. The treated spunbonded nonwoven fabric was used for a top sheet in the same manner as in Example 1 to prepare a disposable diaper. A disposable diaper having excellent skin care properties was obtained.
[0029]
(Comparative Example 1)
As in Example 1, a nonwoven fabric of 30 g / m ² was obtained using 2.2 dtex × 44 mm having a sheath / core structure of polyethylene (PE) / polyester (PET) as raw cotton. The skin care properties were evaluated without applying any of the phospholipid-like structure and the hygroscopic agent to the obtained nonwoven fabric. Table 2 shows the results of the skin care evaluation. The obtained nonwoven fabric was inferior in skin care properties as compared with the treated nonwoven fabrics of Examples 1 to 4.
[0030]
(Comparative Example 2)
As in Example 1, a nonwoven fabric of 30 g / m ² was obtained using 2.2 dtex × 44 mm having a sheath / core structure of polyethylene (PE) / polyester (PET) as raw cotton. To the obtained nonwoven fabric, only a phospholipid-like structure (Lipidure® MF-3) was added at 0.25% o.v. w. f (solid content). Table 2 shows the results of evaluating the skin care properties of the obtained nonwoven fabric. The obtained treated nonwoven fabric did not show a clear difference from the untreated nonwoven fabric (Comparative Example 1), and sufficient skin care properties could not be obtained.
[0031]
[Table 2]

[0032]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, it is suitable for use for clothing, medical care, health maintenance goods, sanitary materials and other items that come into contact with the body. Functional fiber and a fiber structure thereof. Further, it has become possible to provide an absorbent article having excellent skin care properties using the above-mentioned fiber structure.

Claims (8)

A functional fiber characterized in that a moisture absorbent and a phospholipid-like structure are contained or attached in combination. The functional fiber according to claim 1, wherein the hygroscopic agent is a polysaccharide. The functional fiber according to claim 2, wherein the polysaccharide is chitosan. The functional fiber according to claim 2, wherein the polysaccharide is arabinogalactan. The moisture absorbent is a polystyrene-based, polyacrylonitrile-based, polyacrylate-based, or polymethacrylate-based vinyl polymer, and includes a sulfonic acid group, a carboxylic acid group, a phosphate group, or at least a metal salt thereof. The functional fiber according to claim 1, which is a crosslinked polymer having one kind of hydrophilic group and crosslinked with any of divinylbenzene, triallyl isocyanate and hydrazine. A fibrous structure comprising the functional fiber according to any one of claims 1 to 5 at least partially. An absorbent article, wherein the fiber structure according to claim 6 is used at least in part. The absorbent article according to claim 7, wherein the fibrous structure is a nonwoven fabric, and the nonwoven fabric is used on a surface of the absorbent article that comes into contact with the skin.