JP2005139594A - Non-woven fabric and method for producing the same - Google Patents
Non-woven fabric and method for producing the same Download PDFInfo
- Publication number
- JP2005139594A JP2005139594A JP2003380310A JP2003380310A JP2005139594A JP 2005139594 A JP2005139594 A JP 2005139594A JP 2003380310 A JP2003380310 A JP 2003380310A JP 2003380310 A JP2003380310 A JP 2003380310A JP 2005139594 A JP2005139594 A JP 2005139594A
- Authority
- JP
- Japan
- Prior art keywords
- nonwoven fabric
- fiber
- fibers
- bleached cotton
- woven fabric
- 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
- Absorbent Articles And Supports Therefor (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
本発明は、天然油脂が付着した漂白綿繊維とポリオレフィン系熱可塑性短繊維とからなる不織布およびその製造方法に関するものである。 The present invention relates to a nonwoven fabric composed of bleached cotton fibers to which natural fats and oils are adhered and polyolefin-based thermoplastic short fibers, and a method for producing the same.
従来の脱脂綿繊維よりなるスパンレース不織布は、天然素材であるため肌に対する刺激が低く、直接肌に触れる用途に好適であり、また、綿繊維自身が吸液性、保液性に優れるため、この特性を活かした様々な用途に用いられている。 Conventional spunlace nonwoven fabric made of absorbent cotton fiber is a natural material that has low irritation to the skin and is suitable for applications that directly touch the skin. In addition, the cotton fiber itself is excellent in liquid absorbency and liquid retention. It is used in various applications that take advantage of its characteristics.
直接肌に触れる用途のひとつとして、使い捨てオムツや生理用ナプキン等の吸収性物品の表面材が挙げられる。一般に、吸収性物品は、表面材、吸収層、防漏れ層の３層からなり、体から分泌される体液は、表面材にて、すばやく引き込まれ、かつ透過されて、表面材の下にある吸収層へ移動し吸収拡散される。したがって、表面材には、液透過性が要求されるため、疎水性の合成繊維からなる極めて薄い不織シートや孔開きフィルム等が使用されている（例えば、特許文献１）。しかし、吸収性物品の表面材は、直接肌に触れることから、合成繊維のみからなるシートでは、痒みやかぶれ等が発生する場合があり、天然素材からなるシートが求められている。 One of the applications that directly touch the skin is a surface material for absorbent articles such as disposable diapers and sanitary napkins. Generally, an absorbent article consists of three layers, a surface material, an absorption layer, and a leak-proof layer, and the bodily fluid secreted from the body is quickly drawn in and transmitted through the surface material, and is below the surface material. It moves to the absorption layer and is absorbed and diffused. Accordingly, since the surface material is required to have liquid permeability, an extremely thin nonwoven sheet or a perforated film made of a hydrophobic synthetic fiber is used (for example, Patent Document 1). However, since the surface material of the absorbent article directly touches the skin, a sheet made of only synthetic fibers may cause itching or rash, and a sheet made of a natural material is required.
しかしながら、上記した脱脂綿繊維からなる不織布を吸収性物品の表面材に適用すると、綿繊維自身が吸液性、保液性に優れるため、分泌された体液は、表面材を透過せず、ここで吸収・保液してしまうため、着用者にはべたつきによる不快感を与えやすいという問題がある。
本発明の課題は、綿繊維を素材としながら、吸収性物品の表面材としても使用できる新規な不織布を提供することにある。 The subject of this invention is providing the novel nonwoven fabric which can be used also as a surface material of an absorbent article, using cotton fiber as a raw material.
すなわち、本発明は、天然油脂が付着した漂白綿繊維と、少なくとも繊維表面がオレフィン系重合体からなる熱可塑性短繊維とから構成され、構成繊維同士が三次元的に交絡してなることを特徴とする不織布を要旨とするものである。 That is, the present invention is characterized in that it is composed of bleached cotton fibers to which natural fats and oils are attached and thermoplastic short fibers having at least a fiber surface made of an olefin polymer, and the constituent fibers are entangled three-dimensionally. The gist of the nonwoven fabric is as follows.
また、本発明は、天然油脂が付着した漂白綿繊維と、少なくとも繊維表面がオレフィン系重合体からなる熱可塑性短繊維とを混合したウェブをメッシュ状支持体に担持し、次いで、高圧水流を施し構成繊維同士を三次元的に交絡させて一体化することを特徴とする不織布の製造方法に関するものである。 In the present invention, a web in which bleached cotton fibers to which natural fats and oils are attached and thermoplastic short fibers at least on the fiber surface are made of an olefin polymer is supported on a mesh-like support, and then subjected to high-pressure water flow. The present invention relates to a method for producing a nonwoven fabric characterized in that constituent fibers are three-dimensionally entangled and integrated.
本発明の不織布は、天然油脂が付着した漂白綿繊維と、少なくとも繊維表面がポリオレフィン系重合体からなる熱可塑性短繊維とを構成繊維として用いているため、漂白綿繊維は適度の撥水性を有し、また、熱可塑性短繊維は優れた撥水性に有することから、吸収性物品の表面材等の従来の脱脂綿繊維からなる不織布が用いられなかった分野にも好適に用いることができる。また、天然素材である綿繊維を用いていることから衛生上からも有利であるため、上記表面材の他、人体用のウェットワイパー、化粧用パフ、化粧用パックシート、使い捨てシーツ、枕カバー等の肌に直接触れる用途に好適に用いることができる。 The non-woven fabric of the present invention uses bleached cotton fibers to which natural oils and fats are attached and thermoplastic short fibers having at least a fiber surface made of a polyolefin polymer as constituent fibers. Therefore, the bleached cotton fibers have an appropriate water repellency. Moreover, since the thermoplastic short fibers have excellent water repellency, they can be suitably used in fields where conventional nonwoven fabrics made of absorbent cotton fibers such as the surface material of absorbent articles have not been used. In addition, because it uses cotton fiber, which is a natural material, it is advantageous from the viewpoint of hygiene, so in addition to the above surface materials, wet wipes for human bodies, cosmetic puffs, cosmetic pack sheets, disposable sheets, pillow covers, etc. It can be suitably used for applications that directly touch the skin.
また、熱可塑性短繊維が混合されているため、熱処理加工により繊維の一部を軟化させることができるので、不織布表面の毛羽立ち防止や意匠性を付与する目的で熱カレンダーや熱エンボス等の熱処理加工を施して、その目的を良好に達成することが可能となり、耐磨耗性に優れる不織布や、鮮明で耐久性に優れた模様を付与することができる。また、吸収性物品の表面材として使用した場合、吸収性物品の最下層の防漏れ層等とのヒートシール加工を良好に行うことができる。 In addition, since thermoplastic short fibers are mixed, a part of the fibers can be softened by heat treatment, so heat treatment such as heat calendering and heat embossing for the purpose of preventing fluffing on the nonwoven fabric surface and imparting design properties. Thus, the object can be achieved satisfactorily, and a non-woven fabric excellent in abrasion resistance and a clear and excellent pattern can be imparted. Moreover, when it uses as a surface material of an absorbent article, heat seal processing with the leak-proof layer etc. of the lowest layer of an absorbent article can be performed favorably.
本発明の不織布は、天然油脂が付着した漂白綿繊維と、少なくとも繊維表面がポリオレフィン系重合体からなる熱可塑性短繊維とから構成される。 The nonwoven fabric of this invention is comprised from the bleached cotton fiber to which natural fats and oils adhered, and the thermoplastic short fiber which a fiber surface consists of a polyolefin polymer at least.
本発明における漂白綿繊維とは、コットン繊維とも呼ばれる天然繊維のことであって、原綿が漂白されたものである。一般に、原綿を均一に漂白するには、脱脂綿の製造工程と同様の工程が採用されるため、漂白された綿繊維というと、繊維表面に付着している天然油脂が除去された脱脂綿繊維を指すが、本発明においては、漂白されているにもかかわらず、繊維表面の天然油脂が付着してなる漂白綿繊維を用いる。このような天然油脂が付着してなる漂白綿繊維は、特開２００３−２５７１６１に開示されている天然繊維の未脱脂漂白方法によって得ることができる。すなわち、原綿を、オキシ過カルボン酸を含有する漂白用水溶液に接触させることにより、天然油脂が残存しながら良好に漂白されてなる綿繊維を得ることができる。そして、この方法により得られた漂白綿繊維は、繊維表面に０．３〜０．６質量％の天然油脂が付着している。なお、一般に原綿には、コットンワックス（天然油脂）が約０．６質量％付着している。また、本発明においては、上記した天然油脂が付着してなる漂白綿繊維を原料として用いた不織布であるが、後述する不織布化手段（交絡処理）によって、漂白綿繊維に付着してなる天然油脂の量はほとんど変化せず、適度な撥水性を付与することができる。 The bleached cotton fiber in the present invention is a natural fiber also called a cotton fiber, and is obtained by bleaching raw cotton. In general, in order to uniformly bleach raw cotton, the same process as the manufacturing process of absorbent cotton is adopted. Therefore, bleached cotton fiber refers to absorbent cotton fiber from which natural oils and fats adhering to the fiber surface have been removed. However, in the present invention, bleached cotton fibers to which natural fats and oils on the surface of the fibers are attached even though they are bleached are used. Bleached cotton fibers to which such natural fats and oils are attached can be obtained by the non-degreasing bleaching method for natural fibers disclosed in JP-A-2003-257161. That is, by bringing the raw cotton into contact with an aqueous bleaching solution containing oxypercarboxylic acid, it is possible to obtain cotton fibers that are satisfactorily bleached while remaining natural fats and oils. And as for the bleached cotton fiber obtained by this method, 0.3-0.6 mass% natural fats and oils have adhered to the fiber surface. In general, about 0.6% by mass of cotton wax (natural oil) is attached to the raw cotton. Moreover, in this invention, although it is a nonwoven fabric which uses the above-mentioned bleached cotton fiber to which natural fats and oils adhere as a raw material, natural fats and oils which adhere to bleached cotton fibers by the nonwoven fabric forming means (entanglement process) mentioned later The amount of water hardly changes and can impart moderate water repellency.
本発明の熱可塑性短繊維を構成するポリオレフィン系重合体としては、ポリプロピレン、ポリエチレン、エチレンとプロピレンとの共重合体、またはこれらのブレンド体等が挙げられる。少なくとも繊維表面がポリオレフィン系重合体からなる熱可塑性短繊維の繊維形態としては、上記したポリオレフィン系重合体単独からなる単相型の繊維、あるいは、芯部を鞘部が覆ってなる芯鞘複合型であって、鞘部にポリオレフィン系重合体を配した芯鞘複合繊維等が挙げられる。少なくとも繊維表面がポリオレフィン系重合体からなる繊維を採用することにより、不織布に適度の疎水性を付与することができる。また、芯鞘型複合繊維を採用する場合は、芯部に配する重合体の融点は鞘部のポリオリフィン系重合体の融点よりも高いものを配することが好ましい。これによって、熱処理を施して、鞘部のポリオレフィン系重合体を溶融または軟化させた場合であっても、芯部が熱の影響を受けにくく、繊維形態を保つことができるため、不織布の機械的強力や柔軟性を維持することができる。 Examples of the polyolefin-based polymer constituting the thermoplastic short fiber of the present invention include polypropylene, polyethylene, a copolymer of ethylene and propylene, or a blend thereof. As the fiber form of the thermoplastic short fiber whose fiber surface is made of a polyolefin polymer at least, a single-phase fiber made of the above-mentioned polyolefin polymer alone, or a core-sheath composite type in which the sheath part covers the core part And the core-sheath composite fiber etc. which arranged the polyolefin-type polymer in the sheath part are mentioned. By employing a fiber having at least a fiber surface made of a polyolefin-based polymer, moderate hydrophobicity can be imparted to the nonwoven fabric. Moreover, when employ | adopting a core-sheath-type composite fiber, it is preferable to arrange | position the thing whose melting | fusing point of the polymer distribute | arranged to a core part is higher than melting | fusing point of the polyolefin polymer of a sheath part. As a result, even when heat treatment is applied to melt or soften the polyolefin polymer in the sheath, the core is less susceptible to heat and the fiber form can be maintained. Powerfulness and flexibility can be maintained.
熱可塑性短繊維には、所望により親水性油剤や撥水性油剤を付与する。親水性油剤を付与すると、構成繊維同士の交絡手段として高圧水流処理を採用した場合、熱可塑性短繊維と水流との親和性が向上するため、短繊維が動きやすくなり交絡性が向上する。一方、撥水性油剤を熱可塑性短繊維に付与すると、得られる不織布に優れた撥水性を発揮することができる。撥水性油剤としては、公知のものを使用することができるが、本発明においては、直接肌に触れる用途に好適に用いることを考慮して、肌への刺激が少ないものを使用することが好ましい。例えば、特開２００２−３０２８７１に開示されている炭素数１２〜１８のアルキルホスフェート塩から選ばれた少なくとも一種のアルキルホスフェート塩成分（成分Ａ）５０〜８０質量％、フッ素系化合物含有成分（成分Ｂ）１０〜３０質量％、ポリ（オキシエチレン）アルキルエーテル成分（成分Ｃ）１０〜３０質量％からなりｐＨが６．０〜８．０である界面活性剤組成物を好適に用いることができる。なお、熱可塑性短繊維に付与する油剤が親水性の場合は、構成繊維同士の交絡手段として高圧水流処理を採用した場合、繊維表面の油剤のほとんどは除去されるため、得られる不織布における油剤の残存量は極めて微量である。 If desired, a hydrophilic oil agent or a water repellent oil agent is added to the thermoplastic short fibers. When a hydrophilic oil agent is applied, when high-pressure water treatment is employed as a means for entanglement between constituent fibers, the affinity between the thermoplastic short fibers and the water flow is improved, so that the short fibers are easy to move and entanglement is improved. On the other hand, when the water-repellent oil agent is applied to the thermoplastic short fibers, the resulting nonwoven fabric can exhibit excellent water repellency. As the water repellent oil, known ones can be used. However, in the present invention, it is preferable to use one that is less irritating to the skin, considering that it is suitably used for direct skin contact. . For example, 50-80% by mass of at least one alkyl phosphate salt component (component A) selected from alkyl phosphate salts having 12 to 18 carbon atoms disclosed in JP-A No. 2002-302871, a fluorine-containing compound-containing component (component B) A surfactant composition having 10 to 30% by mass and 10 to 30% by mass of a poly (oxyethylene) alkyl ether component (component C) and having a pH of 6.0 to 8.0 can be suitably used. In addition, when the oil agent to be applied to the thermoplastic short fibers is hydrophilic, when the high-pressure water treatment is adopted as a means for entanglement of the constituent fibers, most of the oil agent on the fiber surface is removed. The remaining amount is extremely small.
熱可塑性短繊維の単糸繊度および繊維長は、特に限定されないが、不織布の柔軟性、綿繊維との交絡性を考慮して、単糸繊度が１〜８デシテックス程度で、平均繊維長が１５〜７０ｍｍ程度のものを用いるとよい。 The single yarn fineness and fiber length of the thermoplastic short fiber are not particularly limited, but the single yarn fineness is about 1 to 8 dtex and the average fiber length is 15 in consideration of the flexibility of the nonwoven fabric and the entanglement with the cotton fiber. It is good to use a thing of about ~ 70 mm.
本発明の不織布における漂白綿繊維と熱可塑性短繊維との混合比率は、特に限定されず、不織布の用途や要求性能に応じて適宜選択すればよい。漂白綿繊維の混合比率が多くなると、得られる不織布は、綿繊維特有の吸水性、良好な肌さわり感に優れるものとなり、一方、熱可塑性短繊維の混合比が多くなると、疎水性、ヒートシール性等の特性に優れた不織布となる。本発明においては、漂白綿繊維／熱可塑性短繊維が３０／７０〜７０／３０（質量比）で混合されていることにより、両者のそれぞれの性能を良好に奏することができるため好ましい。例えば、本発明の不織布を吸収性物品の表面材に用いる場合、漂白綿繊維の混合比が３０質量％未満であると、液透過性は向上するものの、天然繊維由来の良好な肌触り感が失われ、一方、漂白綿繊維の混合比が７０質量％を超えると、不織布自身の吸液性、保液性が向上するため、不織布内において体液を吸収、拡散してしまい、液透過性に劣る傾向となる。 The mixing ratio of the bleached cotton fiber and the thermoplastic short fiber in the nonwoven fabric of the present invention is not particularly limited, and may be appropriately selected according to the use and required performance of the nonwoven fabric. When the blending ratio of bleached cotton fibers increases, the resulting nonwoven fabric has excellent water absorbency unique to cotton fibers and good skin feel, while when the blending ratio of thermoplastic short fibers increases, hydrophobicity, heat seal It becomes a nonwoven fabric excellent in properties such as properties. In the present invention, it is preferable that bleached cotton fibers / short thermoplastic fibers are mixed at a ratio of 30/70 to 70/30 (mass ratio) because the respective performances of both can be satisfactorily achieved. For example, when the nonwoven fabric of the present invention is used as the surface material of an absorbent article, if the mixing ratio of the bleached cotton fibers is less than 30% by mass, the liquid permeability is improved, but the feeling of good touch derived from natural fibers is lost. On the other hand, if the mixing ratio of the bleached cotton fibers exceeds 70% by mass, the liquid absorbency and liquid retention of the nonwoven fabric itself are improved, so that the body fluid is absorbed and diffused in the nonwoven fabric, resulting in poor liquid permeability. It becomes a trend.
本発明の不織布は、上記漂白綿繊維と熱可塑性短繊維とからなり、構成繊維同士が三次元的に交絡している。構成繊維同士が、三次元的に交絡することにより、繊維間の空隙が十分に保たれ、また肌触りの良好な不織布となる。繊維同士を三次元的に交絡させるための手段としては、高圧水流処理やニードルパンチ処理を挙げることができる。不織布を直接肌に触れる用途に用いる場合は、高圧水流処理により三次元的に交絡してなるものが柔軟性、ドレープ性に優れるため好ましい。また、不織布は、開孔を有するものであってもよい。開孔を有することにより、本発明の不織布を吸収性物品の表面材として用いた場合に、吸収した体液は、その開孔部を通じて、速やかに表面材の下の吸収層へ移行させることができる。個々の開孔の大きさは０．５〜５ｍｍ2であることが好ましく、また、開孔の存在密度は、１０〜１００個／ｃｍ2であることが好ましい。 The nonwoven fabric of this invention consists of the said bleached cotton fiber and a thermoplastic short fiber, and the constituent fibers are entangled three-dimensionally. When the constituent fibers are entangled three-dimensionally, the gap between the fibers is sufficiently maintained, and the nonwoven fabric has a good touch. Examples of means for three-dimensionally interlacing the fibers include high-pressure water flow treatment and needle punch treatment. When the nonwoven fabric is used for the purpose of directly touching the skin, it is preferable to use a non-woven fabric three-dimensionally entangled by high-pressure water flow treatment because it is excellent in flexibility and drape. Moreover, the nonwoven fabric may have an opening. By having the opening, when the nonwoven fabric of the present invention is used as the surface material of the absorbent article, the absorbed body fluid can be quickly transferred to the absorption layer under the surface material through the opening. . The size of each aperture is preferably 0.5 to 5 mm 2 , and the density of apertures is preferably 10 to 100 holes / cm 2 .
本発明の不織布の目付は、一般的に１５〜３００ｇ／ｍ2程度とすればよいが、用途に応じて適宜選択すればよい。例えば、吸収性物品の表面材として用いる場合は、表面材の下にある吸収層へ体液がすばやく移行しやすいように薄いものであることが好ましく、１５〜５０ｇ／ｍ2程度とするのがよい。 The basis weight of the nonwoven fabric of the present invention is generally about 15 to 300 g / m 2 , but may be appropriately selected according to the application. For example, when it is used as a surface material of an absorbent article, it is preferably thin so that the body fluid is easily transferred to the absorbent layer under the surface material, and is preferably about 15 to 50 g / m 2. .
本発明の不織布は、例えば、以下の方法で得ることができる。まず、天然油脂が付着した漂白綿繊維と、少なくとも繊維表面がポリオレフィン系重合体からなる熱可塑性短繊維とを混合したウェブを準備する。そして、該ウェブをメッシュ状支持体に担持する。メッシュ状支持体としては、不織布の用途に応じて任意のものを採用しうるが、例えば、不織布に開孔を付与する場合は、所定の目開きを持った粗目織物からなるメッシュ状支持体を用いる。また、メッシュ状支持体の織目模様を適宜選択することによって、不織布に任意の模様を付与することもできる。次いで、ウェブ側から高圧水流を施し、構成繊維同士を三次元的に交絡させて一体化した不織布を得る。この高圧水流は、孔径０．０５〜２．０ｍｍの噴射孔が、噴射孔間隔０．０５〜１０ｍｍで一列又は複数列配置されている噴射装置を用い、水を噴射孔から１．５〜４０ＭＰａの圧力で噴射して得られるものである。そうすると、高圧水流はウェブに衝突して、構成繊維に運動エネルギーを与える。この運動エネルギーにより、構成繊維は、相互に交絡する。また、粗目織物からなるメッシュ状支持体を用いた場合は、構成繊維が交絡しながら、メッシュ状支持体の開孔部分へ移動し、支持体のナックル部に対応した箇所には繊維が存在せず開孔が形成され、開孔を有する不織布を得ることができる。 The nonwoven fabric of this invention can be obtained with the following method, for example. First, a web is prepared by mixing bleached cotton fibers to which natural fats and oils are adhered and thermoplastic short fibers having at least a fiber surface made of a polyolefin polymer. Then, the web is supported on a mesh-like support. As the mesh-shaped support, any one can be adopted depending on the use of the nonwoven fabric. For example, when providing openings to the nonwoven fabric, a mesh-shaped support made of a coarse woven fabric having a predetermined opening is used. Use. Moreover, an arbitrary pattern can also be given to a nonwoven fabric by selecting suitably the texture pattern of a mesh-shaped support body. Next, a high-pressure water flow is applied from the web side, and the constituent fibers are three-dimensionally entangled to obtain an integrated nonwoven fabric. This high-pressure water flow uses an injection device in which injection holes with a hole diameter of 0.05 to 2.0 mm are arranged in one or more rows with an injection hole interval of 0.05 to 10 mm, and water is supplied from the injection holes to 1.5 to 40 MPa. It is obtained by spraying at a pressure of The high pressure water stream then impinges on the web and imparts kinetic energy to the constituent fibers. Due to this kinetic energy, the constituent fibers are entangled with each other. In addition, when a mesh-like support made of a coarse woven fabric is used, the constituent fibers move to the opening portion of the mesh-like support while being entangled, and there are no fibers at the location corresponding to the knuckle portion of the support. A non-woven fabric having open holes can be obtained.
メッシュ状支持体の目開きは、得ようとする不織布の表面形態、開孔の有無に基づいて決定することができる。例えば、２５メッシュを超える織物であると、不織布の表面が平滑となって、明瞭な開孔を形成させにくく、４０メッシュを超える織物であると、表面が極めて平滑でドレープ性に優れる不織布を得ることができる。一方、２５メッシュ以下の粗目織物を用いることにより、不織布に明瞭な開孔を形成させることができる。また、２０メッシュ以下の粗目織物を用いると、ウェブの構成繊維がメッシュ状支持体の開孔部により移動しやすくなり、メッシュ状支持体の開孔部に対応した箇所には、繊維の見掛け密度が高い凸部が形成され、凹部には開孔が形成された表面に凹凸を有する不織布を得ることができる。本発明の不織布を吸収性物品の表面材として用いる場合は、メッシュ状支持体が８〜２５メッシュの粗目織物を用いることが好ましい。２５メッシュを超えると、明瞭な開孔を形成させることができにくくなるため、液透過性に劣る傾向となる。一方、８メッシュ未満であると、不織布表面の凸部が大きくなりすぎて、肌触りに劣る傾向となる。なお、メッシュとは、１インチ当たりの線の数を指し、例えば２５メッシュの粗目織物は、１インチ当たり２５本の線が存在するものを指す。 The mesh support can be determined based on the surface form of the nonwoven fabric to be obtained and the presence or absence of openings. For example, if the woven fabric exceeds 25 mesh, the surface of the nonwoven fabric is smooth, and it is difficult to form clear pores. If the woven fabric exceeds 40 mesh, a nonwoven fabric having an extremely smooth surface and excellent drapeability is obtained. be able to. On the other hand, a clear opening can be formed in the nonwoven fabric by using a coarse woven fabric of 25 mesh or less. In addition, when a coarse woven fabric of 20 mesh or less is used, the constituent fibers of the web are easily moved by the apertures of the mesh-like support, and the apparent density of the fibers is present at locations corresponding to the apertures of the mesh-like support. A high-convex part is formed, and a non-woven fabric having irregularities on the surface where the opening is formed in the concave part can be obtained. When using the nonwoven fabric of this invention as a surface material of an absorbent article, it is preferable to use the coarse woven fabric whose mesh-like support body is 8-25 mesh. When it exceeds 25 meshes, it becomes difficult to form a clear hole, and thus the liquid permeability tends to be poor. On the other hand, if it is less than 8 mesh, the convex portion on the surface of the nonwoven fabric becomes too large, and the touch tends to be inferior. The mesh refers to the number of lines per inch. For example, a 25-mesh coarse woven fabric refers to one having 25 lines per inch.
次に、実施例に基づき本発明を具体的に説明するが、本発明はこれらの実施例のみに限定されるものではない。なお、以下の実施例、比較例における各種物性値の測定は以下の方法により実施した。
（１）目付（ｇ／ｍ2）：標準状態の試料から、縦１０ｃｍｘ横１０ｃｍの試料片を１０点作成し、各試料片の質量（ｇ）を秤量し、得られた値の平均値を単位面積あたりに換算して、目付（ｇ／ｍ２）とした。
Next, the present invention will be specifically described based on examples, but the present invention is not limited to only these examples. In addition, the measurement of the various physical-property values in a following example and a comparative example was implemented with the following method.
(1) Weight per unit area (g / m 2 ): Ten sample pieces each having a length of 10 cm and a width of 10 cm were prepared from a sample in a standard state, the mass (g) of each sample piece was weighed, and the average value of the obtained values was calculated. Converted per unit area, the basis weight (g / m 2) was used.
（２）引張強力（Ｎ／５ｃｍ幅）：ＪＩＳ−Ｌ-１９０６に準じて測定した。試料長が２０ｃｍ、試料幅が５ｃｍの試料片を不織布のタテ方向およびヨコ方向について各１０点を作成し、定速伸張型引張試験機（オリエンテック社製、テンシロンＵＴＭ−４−１−１００）を用いて、つかみ間隔１０ｃｍ、引張速度１０ｃｍ／分で伸張し、最大荷重時の強さを測定し、その平均値を引張強力（Ｎ／５ｃｍ幅）とした。 (2) Tensile strength (N / 5 cm width): Measured according to JIS-L-1906. Ten pieces each of a sample piece having a sample length of 20 cm and a sample width of 5 cm in the vertical direction and the horizontal direction of the nonwoven fabric were prepared, and a constant-speed stretch type tensile tester (Orientec, Tensilon UTM-4-1-100) Was used to stretch at a gripping interval of 10 cm and a tensile speed of 10 cm / min, and the strength at the maximum load was measured, and the average value was taken as the tensile strength (N / 5 cm width).
（３）圧縮剛軟度（Ｎ）：試料長が１０ｃｍ、試料幅が５ｃｍの試料片５点を作成し、各試料について長手方向に曲げて、その端部を接合することにより高さ５ｃｍ、周長約１０ｃｍの円筒体を作成し、これを圧縮剛軟度測定用試料とした。次いで、各々測定試料の円筒軸方向（高さ方向）について、定速伸長型引張試験機（オリエンテック社製テンシロンＵＴＭ−４−１−１００）を用い、圧縮速度５ｃｍ／分で圧縮し、得られた最大荷重（ｇ）の平均値を圧縮剛軟度（ｇ）とした。なお、この値が小さいほど柔軟な不織布であることを意味するものである。 (3) Compression bending resistance (N): 5 pieces of sample pieces having a sample length of 10 cm and a sample width of 5 cm were prepared, bent in the longitudinal direction for each sample, and joined at the end to have a height of 5 cm, A cylindrical body having a circumference of about 10 cm was prepared and used as a sample for measuring compression bending resistance. Next, each of the measurement samples was compressed at a compression speed of 5 cm / min with respect to the cylindrical axis direction (height direction) using a constant speed extension type tensile tester (Orientec Tensilon UTM-4-1-100). The average value of the obtained maximum loads (g) was defined as the compression bending resistance (g). In addition, it means that it is a flexible nonwoven fabric, so that this value is small.
（４）吸水高さ（ｍｍ／１０分）：ＪＩＳ−Ｌ−１９０７ バイレック法に準じて測定した。なお、試料としては、試料長２５ｃｍ、試料幅２．５ｃｍのものを用いた。 (4) Water absorption height (mm / 10 min): Measured according to JIS-L-1907 Bayrec method. A sample having a sample length of 25 cm and a sample width of 2.5 cm was used.
（５）沈降速度（秒）：ＪＩＳ−Ｌ−１９０７ 沈降法に準じて測定した。なお、試料片は３ｃｍ×３ｃｍとした。 (5) Sedimentation rate (seconds): Measured according to JIS-L-1907 sedimentation method. The sample piece was 3 cm × 3 cm.
（６）液体の吸収・透過性 面積比率（％）：４０ｃｍ×１５ｃｍの試料片を５点を準備し、高分子吸収体シート上に試験片を積層した積層物を平面に置き、水性インクで着色した蒸留水５ｃｃを積層物上に滴下する。自然乾燥した積層物より、試験片をはがし、色付着面積（Ｓ1）を測定する。
脱脂漂白綿からなる不織布（下記比較例２）にて上記試験を実施した時の色付着面積をブランクとし（Ｓ0）、ブランクに対する試験片の色付着面積（Ｓ1）の比率を算出した。
面積比率（％）＝（Ｓ1／Ｓ0）×１００
(6) Absorption / permeability of liquid Area ratio (%): Prepare 5 pieces of 40 cm × 15 cm sample pieces, place a laminate of test pieces on the polymer absorbent sheet on a flat surface, and use water-based ink. 5 cc of colored distilled water is dropped on the laminate. The specimen is peeled from the naturally dried laminate, and the color adhesion area (S 1 ) is measured.
The color adhesion area when the above test was carried out with a non-woven fabric made of defatted bleached cotton (Comparative Example 2 below) was defined as a blank (S 0 ), and the ratio of the color adhesion area (S 1 ) of the test piece to the blank was calculated.
Area ratio (%) = (S 1 / S 0 ) × 100
実施例１
天然油脂が０．５質量％付着した漂白綿繊維（丸三産業社製）５０質量％と、熱可塑性短繊維として、鞘部にポリエチレン（融点：１３０℃）、芯部にポリエチレンテレフタレート（融点：２５６℃）が配された芯鞘複合短繊維（ユニチカファイバー社製＜６０８０＞ 繊度２．２デシテックス、繊維長５１ｍｍ）５０質量％とを、均一に混合し、カード機に供給し混合ウエブを得た。次いで、この混合ウェブを、移動する２５メッシュのプラスチック製織物からなる支持体に担持し、混合ウェブ側より高圧水流を施した。高圧水流は、支持体の上方５０ｍｍに位置した孔径０．１ｍｍの噴射孔が孔間隔０．６ｍｍで一列配置され、かつその列を三列備えた高圧水流噴射装置を用い、各々４．９ＭＰａ圧力で水を噴射したものである。高圧水流を施すことにより混合ウェブの構成繊維同士を三次元的に交絡させて一体化させた。次いで、一体化させた不織布より、余剰の水分をマングルロールにて除去し、温度１２０℃の乾燥機で乾燥した。得られた不織布の目付は４０ｇ／ｍ2であり、０．８５ｍｍ2の大きさの開孔が存在密度６０個／ｃｍ2で付与されていた。
Example 1
50% by mass of bleached cotton fiber (manufactured by Marusan Sangyo Co., Ltd.) with 0.5% by mass of natural fats and oils, and a thermoplastic short fiber, polyethylene in the sheath (melting point: 130 ° C.) and polyethylene terephthalate (melting point: 256) in the core ℃) are arranged uniformly and 50% by mass with a core-sheath composite short fiber (Unitica Fiber Co., Ltd. <6080> fineness 2.2 decitex, fiber length 51 mm) and supplied to a card machine to obtain a mixed web . Next, the mixed web was supported on a moving support made of 25 mesh plastic fabric, and a high-pressure water flow was applied from the mixed web side. The high-pressure water flow uses a high-pressure water jet device in which injection holes with a hole diameter of 0.1 mm located 50 mm above the support are arranged in a row with a hole interval of 0.6 mm, and three rows are provided, and each pressure is 4.9 MPa. The water is jetted in. By applying a high-pressure water flow, the constituent fibers of the mixed web were three-dimensionally entangled and integrated. Subsequently, excess moisture was removed from the integrated nonwoven fabric with a mangle roll, and the resultant was dried with a dryer at a temperature of 120 ° C. The basis weight of the obtained non-woven fabric was 40 g / m 2 , and openings having a size of 0.85 mm 2 were provided at a density of 60 / cm 2 .
実施例２
天然油脂が０．５質量％付着した漂白綿繊維（以下、未脱脂漂白綿繊維という。）と熱可塑性短繊維との混合比率を未脱脂漂白綿繊維／熱可塑性短繊維＝３０／７０とした以外は実施例１と同様にして不織布を得た。
Example 2
The mixing ratio of bleached cotton fibers (hereinafter referred to as non-defatted bleached cotton fibers) to which 0.5% by mass of natural fats and oils adhered and thermoplastic short fibers was set to non-defatted bleached cotton fibers / thermoplastic short fibers = 30/70. Except for this, a nonwoven fabric was obtained in the same manner as in Example 1.
実施例３
未脱脂漂白綿繊維と熱可塑性短繊維との混合比率を未脱脂漂白綿繊維／熱可塑性短繊維＝７０／３０とした以外は、実施例１と同様にして不織布を得た。
Example 3
A non-woven fabric was obtained in the same manner as in Example 1 except that the mixing ratio of the non-degreased bleached cotton fibers and the thermoplastic short fibers was changed to non-degreased bleached cotton fibers / thermoplastic short fibers = 70/30.
実施例４
支持体として、１０メッシュのプラスチック製織物からなる支持体を用いたこと以外は、実施例１と同様にして不織布を得た。得られた不織布には、約４．２ｍｍ2の大きさの開孔が存在密度１１個／ｃｍ2で付与されており、表面形態が凹凸状となっていた。
Example 4
A nonwoven fabric was obtained in the same manner as in Example 1 except that a support made of a 10-mesh plastic fabric was used as the support. The resulting non-woven fabric was provided with openings having a size of about 4.2 mm 2 at a density of 11 / cm 2 , and the surface morphology was uneven.
実施例５
支持体として、５０メッシュのプラスチック製織物からなる支持体を用いたこと以外は、実施例１と同様にして不織布を得た。得られた不織布には、明瞭な開孔は付与されてなく、表面平滑なものであった。
Example 5
A nonwoven fabric was obtained in the same manner as in Example 1 except that a support made of a 50-mesh plastic fabric was used as the support. The obtained non-woven fabric was not given clear pores and had a smooth surface.
実施例６
支持体として、１００メッシュのプラスチック製織物からなる支持体を用いたこと以外は、実施例１と同様にして不織布を得た。得られた不織布には、開孔は付与されてなく、極めて平滑性に優れたものであった。
Example 6
A nonwoven fabric was obtained in the same manner as in Example 1 except that a support made of a 100 mesh plastic fabric was used as the support. The obtained non-woven fabric was not provided with openings and was extremely excellent in smoothness.
実施例７
実施例１で用いた熱可塑性短繊維に、下記の撥水性油剤を０．４８質量％付与した短繊維を使用したこと以外は、実施例１と同様にして不織布を得た。
撥水性油剤：セチルホスフェートＫ塩５５質量％、パーフルオロアルキル基含有化合物２０質量％、ポリオキシエチレンアルキルエーテル２５質量％からなる界面活性剤
Example 7
A nonwoven fabric was obtained in the same manner as in Example 1 except that the thermoplastic short fibers used in Example 1 were provided with 0.48% by mass of the following water-repellent oil agent.
Water repellent oil: Surfactant comprising cetyl phosphate K salt 55% by mass, perfluoroalkyl group-containing compound 20% by mass, polyoxyethylene alkyl ether 25% by mass
実施例８
未脱脂漂白綿繊維と熱可塑性短繊維との混合比率を未脱脂漂白綿繊維／熱可塑性短繊維＝３０／７０とした以外は、実施例７と同様にして不織布を得た。
Example 8
A non-woven fabric was obtained in the same manner as in Example 7 except that the mixing ratio of the non-degreased bleached cotton fibers and the thermoplastic short fibers was changed to non-degreased bleached cotton fibers / thermoplastic short fibers = 30/70.
実施例９
支持体として、１０メッシュのプラスチック製織物からなる支持体を用いたこと以外は、実施例７と同様にして不織布を得た。得られた不織布には、約４．２ｍｍ2の大きさの開孔が存在密度１１個／ｃｍ2で付与されており、表面形態が凹凸状となっていた。
Example 9
A nonwoven fabric was obtained in the same manner as in Example 7 except that a support made of a 10-mesh plastic fabric was used as the support. The resulting non-woven fabric was provided with openings having a size of about 4.2 mm 2 at a density of 11 / cm 2 , and the surface morphology was uneven.
実施例１０
支持体として、１０メッシュのプラスチック製織物からなる支持体を用いたこと以外は、実施例８と同様にして不織布を得た。得られた不織布には、約４．２ｍｍ2の大きさの開孔が存在密度１１個／ｃｍ2で付与されており、表面形態が凹凸状となっていた。
Example 10
A nonwoven fabric was obtained in the same manner as in Example 8 except that a support made of a 10-mesh plastic woven fabric was used as the support. The resulting non-woven fabric was provided with openings having a size of about 4.2 mm 2 at a density of 11 / cm 2 , and the surface morphology was uneven.
実施例１１
熱可塑性短繊維として、鞘部にポリエチレン（融点：１３０℃）、芯部にポリプロピレン（融点：１６０℃）が配された芯鞘複合短繊維（チッソ社製＜ＥＳＣ繊維＞繊度２．２デシテックス、繊維長５１ｍｍ）を用いたこと以外は、実施例１と同様にして不織布を得た。
Example 11
As the thermoplastic short fiber, a core-sheath composite short fiber (polyethylene (melting point: 160 ° C.) in the sheath and polypropylene (melting point: 160 ° C.) arranged in the sheath (Chisso <ESC fiber> fineness 2.2 decitex, A nonwoven fabric was obtained in the same manner as in Example 1 except that the fiber length was 51 mm.
実施例１２
不織布の目付を２０ｇ／ｍ2としたこと以外は、実施例１と同様にして不織布を得た。
Example 12
A nonwoven fabric was obtained in the same manner as in Example 1 except that the basis weight of the nonwoven fabric was 20 g / m 2 .
実施例１３
高圧水流の圧力を１．９６ＭＰａとしたこと以外は、実施例１と同様にして不織布を得た。
Example 13
A nonwoven fabric was obtained in the same manner as in Example 1 except that the pressure of the high-pressure water flow was 1.96 MPa.
実施例１４
高圧水流の圧力を９．８ＭＰａとしたこと以外は、実施例１と同様にして不織布を得た。
Example 14
A nonwoven fabric was obtained in the same manner as in Example 1 except that the pressure of the high-pressure water flow was 9.8 MPa.
比較例１
未脱脂漂白綿繊維に替えて、脱脂漂白綿（天然油脂の付着量０．１質量％以下）を用いたこと以外は実施例１と同様にして不織布を得た。
Comparative Example 1
A non-woven fabric was obtained in the same manner as in Example 1 except that non-defatted bleached cotton fibers were used and degreased bleached cotton (adhering amount of natural fat / oil of 0.1% by mass or less) was used.
比較例２
熱可塑性短繊維を混合せず、脱脂脱脂綿のみを用いたこと以外は実施例１と同様にして不織布を得た。
Comparative Example 2
A nonwoven fabric was obtained in the same manner as in Example 1 except that only the absorbent cotton was used without mixing the thermoplastic short fibers.
得られた実施例１〜１４、比較例１，２の不織布の物性について表１に示す。 It shows in Table 1 about the physical property of the obtained nonwoven fabric of Examples 1-14 and Comparative Examples 1 and 2.
表１から、本発明の天然油脂が付着した漂白綿からなる不織布は、従来の脱脂漂白綿からなる不織布と比較して、適度の撥水性と吸水性を備えたものである。また、液体の透過性にも優れ、不織布に適度な開孔を付与することによって、より透過性に優れた不織布を得ることができ、吸収性物品の表面材として好適に用いることができる。また、不織布適度の撥水性と吸水性の両者を兼ね備えているため、実施例５，６のような表面が平滑な不織布を化粧用パフや化粧用パックシートとして用いた場合に、化粧水や美容液をその不織布表面および繊維間の空隙に良好に保持することができるため効率的かつ経済的である。 From Table 1, the non-woven fabric made of bleached cotton to which the natural fats and oils of the present invention are attached has moderate water repellency and water absorption compared to conventional non-woven fabric made of degreased bleached cotton. Moreover, it is excellent also in the permeability | transmittance of a liquid, By giving a moderate hole to a nonwoven fabric, the nonwoven fabric which was more excellent in permeability can be obtained, and it can use suitably as a surface material of an absorbent article. In addition, since the nonwoven fabric has both moderate water repellency and water absorption, when a nonwoven fabric with a smooth surface as in Examples 5 and 6 is used as a cosmetic puff or a cosmetic pack sheet, Since the liquid can be well retained on the surface of the nonwoven fabric and the gap between the fibers, it is efficient and economical.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003380310A JP2005139594A (en) | 2003-11-10 | 2003-11-10 | Non-woven fabric and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003380310A JP2005139594A (en) | 2003-11-10 | 2003-11-10 | Non-woven fabric and method for producing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2005139594A true JP2005139594A (en) | 2005-06-02 |
Family
ID=34690088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003380310A Pending JP2005139594A (en) | 2003-11-10 | 2003-11-10 | Non-woven fabric and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2005139594A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892557A (en) * | 2009-05-22 | 2010-11-24 | 大王制纸株式会社 | Absorbability article |
| JP2010279605A (en) * | 2009-06-05 | 2010-12-16 | Daio Paper Corp | Pad type absorptive article |
| JP2011030940A (en) * | 2009-08-05 | 2011-02-17 | Unitika Ltd | Surface sheet of absorbent article |
| CN102212934A (en) * | 2010-04-08 | 2011-10-12 | 王占峰 | Production process for non-woven fabric for building template lining and non-woven fabric |
| JP2012200296A (en) * | 2011-03-24 | 2012-10-22 | Daio Paper Corp | Urine absorbing pad |
| CN103174153A (en) * | 2013-04-17 | 2013-06-26 | 南通大学 | Highway slope protection ecological carpet preparation method |
| CN103510273A (en) * | 2013-10-15 | 2014-01-15 | 东华大学 | Silk/ES semi-perforated structure non-woven material and method for preparing same |
| CN103668783A (en) * | 2013-12-10 | 2014-03-26 | 吴江市品信纺织科技有限公司 | Alkali-resisting non-woven fabric |
| CN103696145A (en) * | 2013-12-10 | 2014-04-02 | 吴江市品信纺织科技有限公司 | Sweat-absorbent non-woven fabric |
| CN104553172A (en) * | 2015-01-05 | 2015-04-29 | 芜湖环瑞汽车内饰件有限公司 | Activated carbon-EVA composite emulsion coated polypropylene-based non-woven sound absorbing material for automobile interior decoration |
| KR20210098942A (en) | 2018-11-30 | 2021-08-11 | 유니 참 코포레이션 | absorbent article |
| US20210369508A1 (en) * | 2014-09-10 | 2021-12-02 | The Procter & Gamble Company | Nonwoven Webs With Hydrophobic And Hydrophilic Layers |
| WO2022088058A1 (en) * | 2020-10-30 | 2022-05-05 | The Procter & Gamble Company | Absorbent article with hybrid nonwoven web |
-
2003
- 2003-11-10 JP JP2003380310A patent/JP2005139594A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101728913B1 (en) * | 2009-05-22 | 2017-04-20 | 다이오세이시가부시끼가이샤 | Absorptive article |
| JP2010269029A (en) * | 2009-05-22 | 2010-12-02 | Daio Paper Corp | Absorbent article |
| CN101892557A (en) * | 2009-05-22 | 2010-11-24 | 大王制纸株式会社 | Absorbability article |
| JP2010279605A (en) * | 2009-06-05 | 2010-12-16 | Daio Paper Corp | Pad type absorptive article |
| JP2011030940A (en) * | 2009-08-05 | 2011-02-17 | Unitika Ltd | Surface sheet of absorbent article |
| CN102212934A (en) * | 2010-04-08 | 2011-10-12 | 王占峰 | Production process for non-woven fabric for building template lining and non-woven fabric |
| JP2012200296A (en) * | 2011-03-24 | 2012-10-22 | Daio Paper Corp | Urine absorbing pad |
| CN103174153A (en) * | 2013-04-17 | 2013-06-26 | 南通大学 | Highway slope protection ecological carpet preparation method |
| CN103510273A (en) * | 2013-10-15 | 2014-01-15 | 东华大学 | Silk/ES semi-perforated structure non-woven material and method for preparing same |
| CN103668783A (en) * | 2013-12-10 | 2014-03-26 | 吴江市品信纺织科技有限公司 | Alkali-resisting non-woven fabric |
| CN103696145A (en) * | 2013-12-10 | 2014-04-02 | 吴江市品信纺织科技有限公司 | Sweat-absorbent non-woven fabric |
| US20210369508A1 (en) * | 2014-09-10 | 2021-12-02 | The Procter & Gamble Company | Nonwoven Webs With Hydrophobic And Hydrophilic Layers |
| US11839531B2 (en) * | 2014-09-10 | 2023-12-12 | The Procter And Gamble Company | Nonwoven webs with hydrophobic and hydrophilic layers |
| CN104553172A (en) * | 2015-01-05 | 2015-04-29 | 芜湖环瑞汽车内饰件有限公司 | Activated carbon-EVA composite emulsion coated polypropylene-based non-woven sound absorbing material for automobile interior decoration |
| KR20210098942A (en) | 2018-11-30 | 2021-08-11 | 유니 참 코포레이션 | absorbent article |
| WO2022088058A1 (en) * | 2020-10-30 | 2022-05-05 | The Procter & Gamble Company | Absorbent article with hybrid nonwoven web |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2655241C2 (en) | Hydroentangled fibrous structures | |
| KR101434927B1 (en) | An absorbent personal care and/or cleansing product for cosmetic and/or dermatological applications comprising at least one absorbent sheet | |
| JP4592516B2 (en) | Liquid-impregnated skin-covering sheet, method for producing the same, and face mask using the same | |
| KR101087564B1 (en) | Stretchable laminated sheet | |
| KR101701689B1 (en) | One-way valve nonwoven material | |
| RU2611944C2 (en) | Single liquid medium absorbing system for absorbent products and methods of its production | |
| KR102315690B1 (en) | Absorbents and hygiene products | |
| JP2010281003A (en) | Skin covering sheet for cosmetic impregnation, method for manufacturing the same, and face mask using the same | |
| JP2005139594A (en) | Non-woven fabric and method for producing the same | |
| JP4721788B2 (en) | Laminated nonwoven fabric and method for producing the same | |
| JP3218416U (en) | Top sheet for absorbent articles | |
| JP2019170756A (en) | Nonwoven fabric for liquid-impregnated skin coat sheets and liquid-impregnated skin coat sheet | |
| CN103124814B (en) | Lamination adhesive-bonded fabric and goods thereof | |
| JP3668184B2 (en) | Skin moist sheet and method for producing the same | |
| JP5272130B2 (en) | Skin covering sheet for impregnating cosmetics, method for producing the same, and face mask using the same | |
| JP2011030940A (en) | Surface sheet of absorbent article | |
| JP2010084297A (en) | Nonwoven fabric for wiper and method for producing the same | |
| JPH03234852A (en) | Absorbent article | |
| JP2012197539A (en) | Multilayered fiber structure | |
| JP4028958B2 (en) | Durable hydrophilic fiber and non-woven fabric using the same | |
| US20210267819A1 (en) | Cellulose nonwoven laminate having 3d embossing | |
| JP3990036B2 (en) | Perforated nonwoven fabric | |
| KR102341363B1 (en) | Disposable absorbent product improved absorbant velocity | |
| JPH0649049B2 (en) | Sanitary material | |
| JP2022122854A (en) | Nonwoven fabric for absorbent articles and method of producing the same, and top-sheet for absorbent articles and absorbent article containing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20061024 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20080911 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080916 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20090203 |