JP2000234254A - Nonwoven fabric for sanitary goods, and sanitary goods - Google Patents
Nonwoven fabric for sanitary goods, and sanitary goodsInfo
- Publication number
- JP2000234254A JP2000234254A JP11032692A JP3269299A JP2000234254A JP 2000234254 A JP2000234254 A JP 2000234254A JP 11032692 A JP11032692 A JP 11032692A JP 3269299 A JP3269299 A JP 3269299A JP 2000234254 A JP2000234254 A JP 2000234254A
- Authority
- JP
- Japan
- Prior art keywords
- nonwoven fabric
- sanitary
- polylactic acid
- sanitary goods
- film
- 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.)
- Pending
Links
Landscapes
- Nonwoven Fabrics (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、衛生用品用不織布
または衛生用品に関する。さらに詳しくは、本発明は、
ポリ乳酸を用いた衛生用品用不織布または衛生用品に関
する。[0001] The present invention relates to a nonwoven fabric or sanitary article for sanitary goods. More specifically, the present invention provides
The present invention relates to a nonwoven fabric or sanitary article for sanitary goods using polylactic acid.
【０００２】[0002]
【従来の技術】従来、使い捨て紙おむつなどの衛生用品
用の不織布としては、主としてポリプロピレン繊維から
なる不織布が用いられてきた。近年の環境問題の深刻化
に伴い衛生用品の大量廃棄が問題視されるようになり、
リサイクルしやすい、あるいは生分解性能を持つような
素材が求められているが、生理用品の効率的な回収・リ
サイクルは非常に困難なため、生分解性素材の利用が期
待されている。2. Description of the Related Art Conventionally, nonwoven fabrics mainly composed of polypropylene fibers have been used as nonwoven fabrics for sanitary articles such as disposable disposable diapers. Mass disposal of sanitary goods has come to be regarded as a problem as the environmental problems have become more serious in recent years.
Materials that are easy to recycle or have biodegradability are required. However, since it is very difficult to efficiently collect and recycle sanitary products, use of biodegradable materials is expected.
【０００３】このような問題を解決しようとする手段と
して、特開平６−２６４３４４号公報には、ポリ乳酸な
どを主成分とする生分解性衛生用繊維集合体が開示され
ている。しかしながら、この繊維集合体は短繊維を用い
たもので、強度と柔軟性のバランス、生産性などの点で
十分に実用に耐えるものではなかった。As a means for solving such a problem, Japanese Patent Application Laid-Open No. Hei 6-264344 discloses a biodegradable sanitary fiber aggregate mainly composed of polylactic acid or the like. However, this fiber aggregate uses short fibers and is not sufficiently practical for use in terms of balance between strength and flexibility, productivity, and the like.
【０００４】また、特開平０７−８５２０号公報には、
ポリ乳酸フィルムと不織布とを含有した紙おむつが開示
されている。しかしながら、ここでも不織布は短繊維を
用いたもので、上記発明と同様、十分実用に耐えるもの
ではなかった。[0004] Japanese Patent Application Laid-Open No. 07-8520 discloses that
A disposable diaper containing a polylactic acid film and a nonwoven fabric is disclosed. However, also in this case, the nonwoven fabric uses short fibers and, like the above-mentioned invention, was not sufficiently practical.
【０００５】さらに、特開平１０−１２８９１９号公報
には、生分解性脂肪族ポリエステルフィルムとポリ乳酸
不織布とを接着させた複合体が開示されており、不織布
として長繊維不織布が用いられている。しかしながら、
ここでは不織布とフィルムとが接着されており、不織布
本来の特徴である柔軟性や透水性は失われていた。Further, Japanese Patent Application Laid-Open No. 10-128919 discloses a composite in which a biodegradable aliphatic polyester film and a polylactic acid nonwoven fabric are bonded, and a long-fiber nonwoven fabric is used as the nonwoven fabric. However,
Here, the nonwoven fabric and the film were adhered to each other, and the flexibility and water permeability, which are inherent features of the nonwoven fabric, were lost.
【０００６】[0006]
【発明が解決しようとする課題】本発明の目的は、衛生
用品の大量廃棄問題を緩和するための生分解性のポリ乳
酸を用いた衛生用品用不織布および衛生用品において、
強度と柔軟性のバランスや生産性に優れた実用性の高い
製品を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a nonwoven fabric for sanitary goods and a sanitary goods using biodegradable polylactic acid for alleviating the problem of mass disposal of sanitary goods.
It is to provide a highly practical product excellent in balance between strength and flexibility and productivity.
【０００７】[0007]
【課題を解決するための手段】本発明の衛生用品用不織
布および衛生用品は、以下の構成を有する。The nonwoven fabric for sanitary goods and the sanitary goods of the present invention have the following constitutions.
【０００８】すなわち、本発明の衛生用品用不織布は、
ポリ乳酸を主成分とする長繊維からなる不織布であっ
て、該不織布の少なくとも一部が接着されているもので
ある。That is, the nonwoven fabric for sanitary goods of the present invention comprises:
A nonwoven fabric made of long fibers mainly composed of polylactic acid, wherein at least a part of the nonwoven fabric is adhered.
【０００９】また、本発明の衛生用品は、防水フィル
ム、高分子吸水体および不織布を含有してなる衛生用品
において、該防水フィルムがポリ乳酸を主成分とするフ
ィルムであり、かつ不織布がポリ乳酸を主成分とする長
繊維からなり、該不織布の少なくとも一部が接着されて
いるものである。A sanitary article according to the present invention is a sanitary article comprising a waterproof film, a polymer absorbent and a nonwoven fabric, wherein the waterproof film is a film mainly composed of polylactic acid and the nonwoven fabric is polylactic acid. , And at least a part of the nonwoven fabric is adhered.
【００１０】本発明において、不織布の接着は好ましく
は熱溶融によってなされている。In the present invention, the bonding of the nonwoven fabric is preferably performed by hot melting.
【００１１】[0011]
【発明の実施の形態】本発明において衛生用品とは、健
康増進、病気の治療などをより簡便に行うための商品群
一般をいう。なかでも本発明では、生体より***される
不浄な物質を簡易に処理する使い捨て製品の一群を特に
対象とする。本発明の衛生用品用不織布は、特に上記用
途に用いることでその特徴を活かすことができる。BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, the term "sanitary articles" refers to a general group of products for health promotion, treatment of diseases and the like more easily. In particular, the present invention is particularly directed to a group of disposable products for easily processing unclean substances excreted from a living body. The nonwoven fabric for sanitary ware of the present invention can make use of its features particularly when used for the above applications.
【００１２】本発明においてポリ乳酸とは、主としてＬ
−乳酸を主たる原料とする高分子（ポリエステル）をい
う。Ｌ−乳酸を主たる原料とするとは、構成成分の６０
％以上がＬ−乳酸よりなっていることを意味しており、
４０重量％を超えない範囲でＤ−乳酸を含有するポリエ
ステルであってもよい。In the present invention, polylactic acid is mainly L
-A polymer (polyester) containing lactic acid as a main raw material. L-lactic acid as the main raw material means that 60
% Or more of L-lactic acid,
It may be a polyester containing D-lactic acid in a range not exceeding 40% by weight.
【００１３】ポリ乳酸の製法としては、乳酸を原料とし
て一旦環状二量体であるラクチドを生成せしめ、その後
開環重合を行う二段階のラクチド法と、乳酸を原料とし
て溶媒中で直接脱水縮合を行う一段階の直接重合法が知
られている。本発明で用いられるポリ乳酸は、いずれの
製法によって得られた物であってもよい。ラクチド法に
よって得られるポリマーの場合には、ポリマー中に含有
される環状２量体が溶融紡糸時に気化して糸斑の原因と
なるため、溶融紡糸以前の段階でポリマー中に含有され
る環状２量体の含有量を0.1wt％以下とすることが望ま
しい。また、直接重合法の場合には、環状２量体に起因
する問題が実質的にないため、製糸性の観点からはより
好適であるといえる。ポリ乳酸は、生物分解性あるいは
下垂分解性が高いため、自然環境中で容易に分解される
利点を有している。[0013] Polylactic acid is produced by a two-stage lactide method in which lactide is used as a raw material to once produce lactide as a cyclic dimer, followed by ring-opening polymerization, or by direct dehydration condensation in a solvent using lactic acid as a raw material. One-step direct polymerization processes are known. The polylactic acid used in the present invention may be one obtained by any production method. In the case of the polymer obtained by the lactide method, since the cyclic dimer contained in the polymer is vaporized at the time of melt spinning and causes thread spots, the cyclic dimer contained in the polymer before the melt spinning is obtained. It is desirable that the body content be 0.1 wt% or less. Further, in the case of the direct polymerization method, since there is substantially no problem caused by the cyclic dimer, it can be said that it is more preferable from the viewpoint of the spinning property. Polylactic acid has the advantage of being easily degraded in the natural environment because of its high biodegradability or ptosis.
【００１４】ポリ乳酸の平均分子量は高いほど好まし
く、通常少なくとも５万、好ましくは少なくとも10万、
より好ましくは10〜30万である。平均分子量が５万より
も低い場合には、繊維の強度物性が低下するため好まし
くない。The higher the average molecular weight of the polylactic acid, the better, usually at least 50,000, preferably at least 100,000,
More preferably, it is 100,000 to 300,000. If the average molecular weight is lower than 50,000, the strength physical properties of the fiber are undesirably reduced.
【００１５】本発明では、このポリ乳酸を主成分とする
長繊維からなる不織布が用いられる。ポリ乳酸を主成分
とするとは、例えばすべてのポリマー成分のうち８０％
以上がポリ乳酸で形成されたり、あるいは共重合ポリマ
ーのうち乳酸構造部分が８０％以上を占めたりしている
ことをいう。本発明では、このようにポリ乳酸を用いる
ことによって、芳香族ポリエステルとは異なり、良好な
ソフト感を有している。この良好なソフト感は、繊維の
ヤング率が芳香族ポリエステル繊維のヤング率に比べ明
確に低いことに起因している。In the present invention, a nonwoven fabric made of long fibers containing polylactic acid as a main component is used. The main component of polylactic acid is, for example, 80% of all polymer components
The above means that the polylactic acid is formed or the lactic acid structural portion occupies 80% or more of the copolymer. In the present invention, unlike the aromatic polyester, the use of polylactic acid has a good soft feeling. This good soft feeling is due to the fact that the Young's modulus of the fiber is clearly lower than that of the aromatic polyester fiber.
【００１６】本発明において長繊維からなる不織布と
は、実質的に連続な形態を有する繊維が集合し、部分的
に交絡によって結合して布状になったものをいう。本発
明の長繊維からなる不織布は、その少なくとも一部が好
適には熱溶融して接着していることを特徴とする。In the present invention, the nonwoven fabric made of long fibers refers to a fabric in which fibers having a substantially continuous form are aggregated and partially joined by entanglement to form a cloth. The nonwoven fabric made of long fibers according to the present invention is characterized in that at least a part thereof is preferably hot-melted and adhered.
【００１７】本発明の長繊維からなる不織布の製造法に
特に限定はないが、好ましくはスパンボンド法を用いる
ことが望ましい。スパンボンド法とは、溶融紡糸によっ
て搬送用シート上に長繊維集合体を形成した後、そのシ
ートを突起等を有する熱ロールなどを用いて加熱・加圧
処理して部分的に熱溶融し接着するものである。Although there is no particular limitation on the method for producing the nonwoven fabric comprising long fibers of the present invention, it is preferable to use the spunbond method. Spunbond method is to form a long fiber aggregate on a conveying sheet by melt spinning, then heat and press the sheet using a hot roll with protrusions etc. to partially heat melt and bond Is what you do.
【００１８】本発明においては、上記接着処理を受ける
部分（接着部）の面積不織布全体における割合は３０％
以下であることが望ましい。この接着部の面積の割合が
これより大きいと、柔軟性が損なわれるため好ましくな
い。また、接着部の下限は不織布が形状保持できればよ
く特定はされないが、好ましくは１０％以上である。In the present invention, the area of the portion (bonding portion) to be subjected to the bonding treatment is 30% in the whole nonwoven fabric.
It is desirable that: If the ratio of the area of the bonding portion is larger than this, the flexibility is undesirably deteriorated. The lower limit of the bonded portion is not particularly limited as long as the shape of the nonwoven fabric can be maintained, but is preferably 10% or more.
【００１９】接着部の接着面積を調節する方法として
は、突起を有する熱ロールの突起部の突起の大きさや形
状、密度を変更するなどすればよい。また接着された不
織布中の接着部の面積は、肉眼または顕微鏡で観察し、
繊維が近傍の繊維に接着している部分の割合を求めれば
よい。As a method of adjusting the bonding area of the bonding portion, the size, shape and density of the protrusion of the protrusion of the heat roll having the protrusion may be changed. In addition, the area of the bonded portion in the bonded nonwoven fabric is observed with the naked eye or a microscope,
What is necessary is just to obtain the ratio of the part where the fiber is bonded to the neighboring fiber.
【００２０】また本発明においては、不織布の目付は３
０ｇ／ｍ2以上１５０ｇ／ｍ2以下であることが望まし
い。この理由は、目付が３０ｇ／ｍ2未満であると強度
が十分に保てないからであり、目付が１５０ｇ／ｍ2を
超えると柔軟性が損なわれるからである。目付を調節す
る方法としては、溶融紡糸時の吐出量と搬送速度との比
を変更するなどすればよい。In the present invention, the basis weight of the nonwoven fabric is 3
It is desirable that it be 0 g / m 2 or more and 150 g / m 2 or less. The reason is that if the basis weight is less than 30 g / m 2 , the strength cannot be sufficiently maintained, and if the basis weight exceeds 150 g / m 2 , flexibility is impaired. As a method of adjusting the basis weight, the ratio between the discharge amount during the melt spinning and the transport speed may be changed.
【００２１】次に、本発明は、防水フィルム、高分子吸
水体および不織布を含有してなる衛生用品を提供する
が、この衛生用品の例としては、紙おむつ、生理用品お
よび***物吸収シートなどを挙げることができる。特
に、最近需要が急増している成人用紙おむつは、重量が
大きくより廃棄量が大となるため、本発明においてより
重要な使用形態である。Next, the present invention provides a sanitary article containing a waterproof film, a polymer absorbent, and a nonwoven fabric. Examples of the sanitary article include a disposable diaper, a sanitary article, and an excrement absorbing sheet. Can be mentioned. In particular, an adult disposable diaper, which has been rapidly increasing in demand recently, is a more important use form in the present invention because of its heavy weight and larger waste amount.
【００２２】本発明の衛生用品に用いられる防水フィル
ムは、衛生用品から***物などが外部に漏れることを防
止するために通常衛生用品の外層に配置されるもので、
そのため一定の水圧がかかっても水を反対側に透過しな
いフィルムが用いられるが、本発明ではこの防水フィル
ムポリ乳酸を主成分とするポリエステルで構成する。防
水フィルムをポリ乳酸とすることで、衛生用品全体の大
量廃棄問題を緩和することができる。The waterproofing film used for the sanitary ware of the present invention is usually disposed on the outer layer of the sanitary ware in order to prevent excrement and the like from leaking out of the sanitary ware.
For this reason, a film that does not allow water to permeate to the opposite side even when a certain water pressure is applied is used. In the present invention, the waterproof film is made of polyester containing polylactic acid as a main component. By using a polylactic acid for the waterproof film, the problem of mass disposal of the entire sanitary article can be mitigated.
【００２３】防水フィルムの厚さは、２μｍ以上５０μ
ｍ以下であることが望ましい。その理由は、厚さが２μ
ｍより小さいと衛生用品全体の強度が十分保てないから
であり、５０μｍより大きいと柔軟性が損なわれるから
である。The thickness of the waterproof film is 2 μm or more and 50 μm or more.
m or less. The reason is that the thickness is 2μ
If it is smaller than m, the strength of the entire sanitary article cannot be sufficiently maintained, and if it is larger than 50 μm, the flexibility is impaired.
【００２４】本発明のポリ乳酸を主成分とする防水フィ
ルムにおいては、より着用快適性の高い衛生用品を得る
ために、透湿性を付与することもできる。透湿性とは、
水滴としての水は通さずに、蒸気の状態の水のみを透過
する機能をいう。透湿性を付与するには、防水フィルム
に親水性ポリマーや微粒子を配合したり、延伸方法の工
夫により防水フィルムを微細孔を多数持つ構造にしたり
する方法を用いればよい。The waterproofing film of the present invention containing polylactic acid as a main component may be provided with moisture permeability in order to obtain a hygienic article having higher wearing comfort. What is moisture permeability?
This means the function of permeating only water in a vapor state without passing water as water droplets. In order to impart moisture permeability, a method may be used in which a hydrophilic polymer or fine particles are blended into the waterproof film, or the waterproof film has a structure having a large number of micropores by devising a stretching method.
【００２５】本発明で用いられる高分子吸収体として
は、ポリアクリル酸ナトリウム系、ポリビニルアルコー
ル（ＰＶＡ）系およびデンプン系などの各種高吸水ポリ
マーを、ゲル状やパルプ状などにする、あるいは綿状パ
ルプと混合するなどしたものを挙げることができる。特
に好ましくは、高分子吸収体にも生分解性を付与するた
め、例えばデンプン系などの生分解性高吸水ポリマーを
用いることが望ましい。As the polymer absorber used in the present invention, various superabsorbent polymers such as sodium polyacrylate, polyvinyl alcohol (PVA) and starch can be converted into a gel or pulp, or a cotton. What mixed with pulp etc. can be mentioned. Particularly preferably, a biodegradable high water-absorbing polymer such as starch is preferably used in order to impart biodegradability to the polymer absorber.
【００２６】本発明で衛生用品に用いられる不織布とし
ては、上述したポリ乳酸を主成分とする長繊維からなる
不織布を用いことができる。この不織布の接着部の面積
は、不織布全体の３０％以下であることが好ましい。ま
た、不織布の目付は３０ｇ／ｍ2以上１５０ｇ／ｍ2以下
であることが望ましい。このとき、不織布の強度は３Ｋ
ｇ／ｃｍ以上、柔軟性は風合い計測システムとして一般
的に使われているＫＥＳの曲げ剛性の測定で、０．５ｇ
・ｃｍ２／ｃｍ以下となることが望ましい。As the nonwoven fabric used in the sanitary ware of the present invention, the above-mentioned nonwoven fabric composed of long fibers mainly composed of polylactic acid can be used. The area of the bonding portion of the nonwoven fabric is preferably 30% or less of the entire nonwoven fabric. Further, the basis weight of the nonwoven fabric is desirably 30 g / m 2 or more and 150 g / m 2 or less. At this time, the strength of the nonwoven fabric is 3K
g / cm or more, the flexibility is 0.5 g as measured by the flexural rigidity of KES, which is generally used as a texture measurement system.
-It is desirable that it be not more than cm2 / cm.
【００２７】[0027]
【実施例】以下、実施例をあげて本発明をさらに具体的
に説明する。EXAMPLES The present invention will be described below more specifically with reference to examples.
【００２８】なお、実施例および比較例における各特性
の測定は以下の方法で行った。 ＜引張強さ＞ＪＩＳＬ１０９６に従い、幅５ｃｍ、つか
み幅２０ｃｍで引張試験機テンシロンを用いて測定し
た。 ＜柔軟性＞不織布の柔軟性の評価は風合い計測システム
として一般的に使われているＫＥＳ（Kawabata Evaluat
ion System）の曲げ剛性の測定を用いた。ＫＥＳの曲げ
特性測定機（ＦＢ−２）では繊維構造物を曲げたときの
各曲率での反発力を測定する。そして曲率０．５から
１．５の間での反発力の平均値をＢ（単位：ｇ・ｃｍ 2
／ｃｍ）という特性値で表し、これを繊維構造物の柔軟
性の尺度とする。また、織物の場合は、経糸に垂直な方
向と緯糸に垂直な方向のそれぞれについてこの測定を行
い、平均値をＢとする。本発明の実施例でもこの特性値
Ｂを用いて風合いの柔軟性を評価した。 ＜生分解性評価＞不織布あるいは紙おむつを温度３５
℃、水分３０％の土壌中に埋め込み、１年間放置した。
その後不織布あるいは紙おむつの原形からの変化を評価
した。Each characteristic in Examples and Comparative Examples
Was measured by the following method. <Tensile strength> According to JISL1096, width 5 cm,
Measured using a tensile tester Tensilon with a width of 20 cm
Was. <Flexibility> Evaluation of the softness of the nonwoven fabric is a texture measurement system
KES (Kawabata Evaluat) commonly used as
The measurement of the bending stiffness of the ion system was used. KES bending
In the property measuring machine (FB-2), when the fiber structure is bent
Measure the repulsive force at each curvature. And from a curvature of 0.5
The average value of the repulsive force between 1.5 and B (unit: gcm) Two
/ Cm), which is the flexibility of the fiber structure.
It is a measure of gender. In the case of woven fabric, the direction perpendicular to the warp
This measurement is performed in each of the
The average value is B. In the embodiment of the present invention, this characteristic value
Using B, the flexibility of the texture was evaluated. <Evaluation of biodegradability> Nonwoven fabric or disposable diaper was heated to a temperature of 35.
It was embedded in soil at 30 ° C. and a water content of 30% and left for one year.
After that, evaluate the change from the original shape of nonwoven or disposable diapers
did.
【００２９】［実施例１〜６、比較例１］２６０℃、１
０００sec-1における溶融粘度が１２００poiseであり、
融点が１６８℃であるポリ乳酸のチップ（Ｌ体比率９５
％、Ｄ体比率５％）を、６０℃にて４８時間真空乾燥し
た。乾燥したチップをメルター温度250℃にて溶融し、
紡糸温度260℃としたスピンブロックへ導入して繊維の
噴射を行った。口金下１００ｃｍの位置には空気アスピ
レーターと衝突板を設置して開繊し、金網コンベアーに
捕集した後、１１０℃に加熱したエンボスロールで加圧
処理した。ここで接着面積と目付を変えるため、エンボ
スロールを２種類（凸部面積４５％、２０％）、吐出量
を３段階（２ｇ／分・ｃｍ、８ｇ／分・ｃｍ、２０ｇ／
分・ｃｍ）に変えて表１に示すような水準の不織布を作
成した。[Examples 1 to 6, Comparative Example 1] 260 ° C., 1
The melt viscosity at 000 sec -1 is 1200 poise,
Polylactic acid chips having a melting point of 168 ° C (L-form ratio 95
%, D-form ratio 5%) was vacuum dried at 60 ° C. for 48 hours. Melt the dried chips at a melter temperature of 250 ° C,
The fiber was injected by introducing into a spin block at a spinning temperature of 260 ° C. An air aspirator and a collision plate were installed at a position 100 cm below the die, the fiber was opened, collected on a wire mesh conveyor, and then pressure-treated with an embossing roll heated to 110 ° C. Here, in order to change the bonding area and the basis weight, two types of embossing rolls (projection area: 45%, 20%) and three levels of discharge amount (2 g / min.cm, 8 g / min.cm, 20 g /
Min./cm) to produce a nonwoven fabric having the level shown in Table 1.
【００３０】それぞれの不織布について強度と柔軟性を
測定した結果を同じく表１示す。これから、接着面積３
０％以下でより柔軟な不織布が得られ、かつ目付３０ｇ
／ｍ 2以上１５０ｇ／ｍ2以下での場合が最も強度と柔軟
性のバランスが優れていた。Strength and flexibility of each nonwoven fabric
Table 1 also shows the measurement results. From now on, the bonding area 3
A flexible nonwoven fabric can be obtained at 0% or less, and the basis weight is 30 g.
/ M TwoMore than 150g / mTwoMost strength and flexibility when
The balance of sex was excellent.
【００３１】[0031]
【表１】 次に、それぞれの不織布の生分解性試験を市販ポリプロ
ピレン不織布（比較例１）とともに行った。結果を表２
に示すが、すべての水準で完全に原型をとどめない程度
に分解が進んでいた。[Table 1] Next, the biodegradability test of each nonwoven fabric was performed with a commercially available polypropylene nonwoven fabric (Comparative Example 1). Table 2 shows the results
As shown in the figure, the decomposition progressed to such an extent that the prototype was not completely retained at all levels.
【００３２】[0032]
【表２】 ［実施例７〜１２、比較例２］実施例１〜６の各不織
布、厚さ１２μｍのポリ乳酸フィルム、澱粉・アクリル
酸グラフト共重合体（モル比７：３）架橋物からなる高
分子吸収体を用い、ポリ乳酸フィルム／不織布／高分子
吸収体／不織布の順に積層して所定の形状に成形するこ
とにより紙おむつを得た。[Table 2] [Examples 7 to 12 and Comparative Example 2] Polymer absorption comprising the nonwoven fabrics of Examples 1 to 6, a polylactic acid film having a thickness of 12 μm, and a starch / acrylic acid graft copolymer (molar ratio 7: 3) crosslinked product The paper diaper was obtained by laminating a polylactic acid film / nonwoven fabric / polymer absorbent / nonwoven fabric in this order and molding it into a predetermined shape.
【００３３】実施例８、９、１２は不織布の柔軟性不足
のため、着用時に快適性が不足した。また実施例７、１
０は不織布の強度不足のため、破れやすかった。In Examples 8, 9 and 12, comfort was insufficient when worn due to insufficient flexibility of the nonwoven fabric. Examples 7 and 1
No. 0 was easily broken due to insufficient strength of the nonwoven fabric.
【００３４】さらにそれぞれの紙おむつの生分解性試験
を、市販紙おむつ（比較例２）とともに行った。結果を
表３に示すが、すべての水準でほとんど原型をとどめな
い程度以上に分解が進んでいた。Further, the biodegradability test of each disposable diaper was conducted together with a commercial disposable diaper (Comparative Example 2). The results are shown in Table 3. Decomposition progressed to such an extent that the prototype was hardly retained at all levels.
【００３５】[0035]
【表３】 [Table 3]
【００３６】[0036]
【発明の効果】本発明の衛生用品不織布、衛生用品によ
れば、使用後自然環境中で比較的短い時間に無害な物質
に分解されるので、衛生用品の大量廃棄問題を緩和する
一助となる。また、ポリ乳酸を用いた従来の製品より
も、強度と柔軟性のバランスや生産性により優れた実用
性の高い製品が得られる。According to the sanitary ware nonwoven fabric and sanitary ware of the present invention, they are decomposed into harmless substances in a relatively short period of time after use in the natural environment, which helps to alleviate the problem of mass disposal of sanitary ware. . In addition, a more practical product having a better balance between strength and flexibility and higher productivity than conventional products using polylactic acid can be obtained.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3B029 BB05 BC06 4C003 BA08 CA05 HA04 4L047 AA21 AB03 BA09 CA19 CB01 CB10 CC03 CC05 EA05 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3B029 BB05 BC06 4C003 BA08 CA05 HA04 4L047 AA21 AB03 BA09 CA19 CB01 CB10 CC03 CC05 EA05
Claims (7)
織布であって、該不織布の少なくとも一部が接着されて
いることを特徴とする衛生用品用不織布。1. A nonwoven fabric for sanitary goods, comprising a nonwoven fabric composed of long fibers mainly composed of polylactic acid, wherein at least a part of the nonwoven fabric is adhered.
着部の面積が不織布全体の３０％以下であることを特徴
とする請求項１記載の衛生用品用不織布。2. The nonwoven fabric for sanitary goods according to claim 1, wherein the bonding of the nonwoven fabric is performed by heat melting, and the area of the bonded portion is 30% or less of the whole nonwoven fabric.
／ｍ2以下であることを特徴とする請求項１または２記
載の衛生用品用不織布。3. The nonwoven fabric has a basis weight of 30 g / m 2 or more and 150 g.
/ M 2 or less, the nonwoven fabric for sanitary goods according to claim 1 or 2, characterized in that:
を含有してなる衛生用品において、該防水フィルムがポ
リ乳酸を主成分とするフィルムであり、かつ該不織布が
ポリ乳酸を主成分とする長繊維からなり、該不織布の少
なくとも一部が接着されている不織布であることを特徴
とする衛生用品。4. A sanitary product comprising a waterproof film, a polymer absorbent and a nonwoven fabric, wherein the waterproof film is a film mainly composed of polylactic acid, and the nonwoven fabric is a long film mainly composed of polylactic acid. A sanitary product comprising fibers, wherein the nonwoven fabric is a nonwoven fabric to which at least a part of the nonwoven fabric is adhered.
着部の面積が不織布全体の３０％以下であることを特徴
とする請求項４記載の衛生用品。5. The sanitary article according to claim 4, wherein the bonding of the nonwoven fabric is performed by heat melting, and the area of the bonding portion is 30% or less of the whole nonwoven fabric.
／ｍ2以下であることを特徴とする請求項４または５記
載の衛生用品。6. The nonwoven fabric has a basis weight of 30 g / m 2 or more and 150 g.
/ M 2 or less, the sanitary article according to claim 4 or 5, wherein:
であることを特徴とする請求項４〜６のいずれか１項に
記載の衛生用品。7. The sanitary article according to claim 4, wherein the thickness of the film is 2 μm or more and 50 μm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11032692A JP2000234254A (en) | 1999-02-10 | 1999-02-10 | Nonwoven fabric for sanitary goods, and sanitary goods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11032692A JP2000234254A (en) | 1999-02-10 | 1999-02-10 | Nonwoven fabric for sanitary goods, and sanitary goods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000234254A true JP2000234254A (en) | 2000-08-29 |
Family
ID=12365925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11032692A Pending JP2000234254A (en) | 1999-02-10 | 1999-02-10 | Nonwoven fabric for sanitary goods, and sanitary goods |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000234254A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003135521A (en) * | 2001-11-01 | 2003-05-13 | Fukuoka Pref Gov Sangyo Kagaku Gijutsu Shinko Zaidan | Reclaimed diaper and reclaimed urine taking pad |
| JP2006002282A (en) * | 2004-06-17 | 2006-01-05 | Toray Ind Inc | Biodegradable nonwoven fabric and sanitary material using the same |
| US7994078B2 (en) | 2002-12-23 | 2011-08-09 | Kimberly-Clark Worldwide, Inc. | High strength nonwoven web from a biodegradable aliphatic polyester |
| US20110259512A1 (en) * | 2008-04-25 | 2011-10-27 | Amcor Flexibles Transpac N.V. | Method for the Production of Thin Polymer Film |
| JP2011250966A (en) * | 2010-06-01 | 2011-12-15 | Kao Corp | Disposable diaper |
| CN104674379A (en) * | 2015-03-06 | 2015-06-03 | 苏州爱立方服饰有限公司 | Waterproof fabric material and preparation method thereof |
| US11976394B2 (en) | 2019-09-20 | 2024-05-07 | Mitsui Chemicals Asahi Life Materials Co., Ltd. | Non-woven fabric |
-
1999
- 1999-02-10 JP JP11032692A patent/JP2000234254A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003135521A (en) * | 2001-11-01 | 2003-05-13 | Fukuoka Pref Gov Sangyo Kagaku Gijutsu Shinko Zaidan | Reclaimed diaper and reclaimed urine taking pad |
| US7994078B2 (en) | 2002-12-23 | 2011-08-09 | Kimberly-Clark Worldwide, Inc. | High strength nonwoven web from a biodegradable aliphatic polyester |
| JP2006002282A (en) * | 2004-06-17 | 2006-01-05 | Toray Ind Inc | Biodegradable nonwoven fabric and sanitary material using the same |
| US20110259512A1 (en) * | 2008-04-25 | 2011-10-27 | Amcor Flexibles Transpac N.V. | Method for the Production of Thin Polymer Film |
| JP2011250966A (en) * | 2010-06-01 | 2011-12-15 | Kao Corp | Disposable diaper |
| CN104674379A (en) * | 2015-03-06 | 2015-06-03 | 苏州爱立方服饰有限公司 | Waterproof fabric material and preparation method thereof |
| US11976394B2 (en) | 2019-09-20 | 2024-05-07 | Mitsui Chemicals Asahi Life Materials Co., Ltd. | Non-woven fabric |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101275404B1 (en) | Biodegradable Multicomponent Fibers | |
| KR101296018B1 (en) | Absorbent articles having biodegradable nonwoven webs | |
| KR100354360B1 (en) | Method for preparing spraying biodegradable fibrils using the flow of gaseous substances, non-woven fabrics containing biodegradable fibrils and articles comprising bi-woven fabrics | |
| US5171309A (en) | Polyesters and their use in compostable products such as disposable diapers | |
| AU775757B2 (en) | Biodegradable thermoplastic nonwoven webs for fluid management | |
| HUT78003A (en) | Stirring processes for preparing biodegradable fibrils, nonwoven fabrics comprising the biodegradable fibrils, and articles comprising the nonwoven fabrics | |
| JP2007119928A (en) | Biodegradable conjugated fiber and fiber structure and absorbent article using the same | |
| JP6799667B2 (en) | Non-woven fabric containing polylactic acid with improved strength and toughness | |
| JP4113989B2 (en) | Nonwoven materials containing biodegradable copolymers | |
| KR20080106609A (en) | The manufacturing method of nonwoven using pla staple fiber and the nonwoven thereof and the biodegradable absorbent pad therewith | |
| JP2000234254A (en) | Nonwoven fabric for sanitary goods, and sanitary goods | |
| CN1235950C (en) | Method for preparing soft and elastic biodegradable polyhyoxyalkanmoate copolymer compositions andpolymer products comprising such compositions | |
| JP2005048350A (en) | Biodegradable nonwoven fabric and sanitary material, wrapping material and agricultural material using the same | |
| JP2003513130A (en) | Polymer products comprising flexible elastic biodegradable polyhydroxyalkanoate copolymer compositions and methods of making such polymer products | |
| US20220064850A1 (en) | Nonwoven fabric having improved fluid management properties | |
| JP3516291B2 (en) | Method for producing biodegradable nonwoven fabric with excellent elasticity | |
| JP2001503110A (en) | Long fiber nonwoven fabric and absorbent article using the same | |
| JPH08117271A (en) | Sanitary napkin | |
| JP3553722B2 (en) | Biodegradable nonwoven fabric and method for producing the same | |
| JP4774900B2 (en) | Elastic nonwoven fabric and article using the same | |
| JPH08117270A (en) | Sanitary napkin | |
| JP4117915B2 (en) | Biodegradable nonwoven fabric and method for producing the same | |
| JP4117916B2 (en) | Biodegradable nonwoven fabric and method for producing the same | |
| JP2021159314A (en) | Absorbent article nonwoven fabric and absorbent article comprising the same | |
| EP1340479A1 (en) | Process for producing a biodegradable film for absorbent sanitary articles and nappies containing it |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20060203 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20071030 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20071106 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20071227 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080122 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20080527 |