JP2014025187A5 - - Google Patents
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- JP2014025187A5 JP2014025187A5 JP2013124434A JP2013124434A JP2014025187A5 JP 2014025187 A5 JP2014025187 A5 JP 2014025187A5 JP 2013124434 A JP2013124434 A JP 2013124434A JP 2013124434 A JP2013124434 A JP 2013124434A JP 2014025187 A5 JP2014025187 A5 JP 2014025187A5
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- surface side
- nonwoven fabric
- fiber
- projecting
- protrusion
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- 239000000835 fiber Substances 0.000 claims description 40
- 239000004745 nonwoven fabric Substances 0.000 claims description 33
- 210000003491 Skin Anatomy 0.000 claims description 8
- 229920002456 HOTAIR Polymers 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims 2
- 230000002745 absorbent Effects 0.000 claims 1
- 239000002250 absorbent Substances 0.000 claims 1
- 230000004927 fusion Effects 0.000 claims 1
- 239000000155 melt Substances 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 9
- 239000007788 liquid Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000036826 Excretion Effects 0.000 description 3
- 230000029142 excretion Effects 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010191 image analysis Methods 0.000 description 2
- 210000004369 Blood Anatomy 0.000 description 1
- 210000001124 Body Fluids Anatomy 0.000 description 1
- 210000001736 Capillaries Anatomy 0.000 description 1
- 206010011985 Decubitus ulcer Diseases 0.000 description 1
- 206010015150 Erythema Diseases 0.000 description 1
- 208000010201 Exanthema Diseases 0.000 description 1
- 210000003608 Feces Anatomy 0.000 description 1
- 208000004210 Pressure Ulcer Diseases 0.000 description 1
- 206010037844 Rash Diseases 0.000 description 1
- 210000002700 Urine Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 201000005884 exanthem Diseases 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000002175 menstrual Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000002459 sustained Effects 0.000 description 1
Description
＜接触角の測定方法＞
接触角は次の方法で測定される。
測定装置として、協和界面科学株式会社製の自動接触角計ＭＣＡ−Ｊを用いる。接触角測定には蒸留水を用いる。インクジェット方式水滴吐出部（クラスターテクノロジー社製、吐出部孔径が２５μｍのパルスインジェクターＣＴＣ−２５）から吐出される液量を２０ピコリットルに設定し、水滴を、繊維の真上に滴下する。滴下の様子を水平に設置されたカメラに接続された高速度録画装置に録画する。録画装置は後に画像解析をする観点から、高速度キャプチャー装置が組み込まれたパーソナルコンピュータが望ましい。本測定では、１７ｍｓｅｃ毎に、画像が録画される。録画された映像において、繊維に水滴が着滴した最初の画像を、付属ソフトＦＡＭＡＳ（ソフトのバージョンは２．６．２、解析手法は液滴法、解析方法はθ／２法、画像処理アルゴリズムは無反射、画像処理イメージモードはフレーム、スレッシホールドレベルは２００、曲率補正はしない、とする）にて画像解析を行い、水滴の空気に触れる面と繊維のなす角を算出し、接触角とする。
なお、測定用サンプル（不織布から取り出して得られる繊維）は、第１面側繊維及び第２面側繊維を、表層から繊維長１ｍｍで裁断し、該繊維を接触角計のサンプル台に載せて、水平に維持し、該繊維１本につき異なる２箇所の位置で接触角を測定する。上述の各部位において、Ｎ＝５本の接触角を小数点以下１桁まで計測し、合計１０箇所の測定値を平均した値（小数点以下第２桁で四捨五入）を各々の部位での接触角と定義する。前記測定は室温２０℃、湿度６０％の環境下で行い、使用する蒸留水、測定サンプルは前記環境下で１日以上保存後に使用する。
<Measurement method of contact angle>
The contact angle is measured by the following method.
As a measuring device, an automatic contact angle meter MCA-J manufactured by Kyowa Interface Science Co., Ltd. is used. Distilled water is used for contact angle measurement. The amount of liquid ejected from an ink jet system water droplet ejection section (manufactured by Cluster Technology Co., Ltd., pulse injector CTC-25 having a pore diameter of 25 μm) is set to 20 picoliter, and water droplets are dripped just above the fibers. The state of dripping is recorded on a high-speed recording device connected to a horizontally installed camera. Recording device from the viewpoint of the image analysis after the personal computer high speed capture device is incorporated is desirable. In this measurement, an image is recorded every 17 msec. In the recorded video, the first image of water droplets on the fiber is attached to the attached software FAMAS (software version is 2.6.2, analysis method is droplet method, analysis method is θ / 2 method, image processing algorithm Is non-reflective, the image processing image mode is frame, the threshold level is 200, and the curvature is not corrected). Image analysis is performed to calculate the angle between the surface of the water droplet that touches the air and the fiber, and the contact angle And
In addition, the sample for measurement (fiber obtained by taking out from a nonwoven fabric) cut | disconnects the 1st surface side fiber and the 2nd surface side fiber from the surface layer by fiber length 1mm, and mounts this fiber on the sample stand of a contact angle meter. The contact angle is measured at two different positions for each of the fibers. In each of the above-mentioned parts, N = 5 contact angles are measured to one decimal place, and a total of 10 measured values (rounded to the second decimal place) is calculated as the contact angle at each part. Define. The measurement is performed in an environment of room temperature 20 ° C. and humidity 60%, and distilled water and a measurement sample to be used are used after storage for 1 day or more in the environment.
不織布１０（前記図１参照）は排泄物の捕捉性に優れる。
本実施形態の不織布１０においては、その両面に突出する第１，第２突出部１１，１２のそれぞれの内部に内部空間１１Ｋ，１２Ｋを有することから、排泄液や排泄物の物性に応じて多様な形態でこれらを捕捉し対応することができる。例えば、不織布１０の第１面側Ｚ１を肌面側として説明すると、粘度が高く浸透性の低い排泄物であれば、不織布１０の表面シートを透過せずに、内部空間１２Ｋに一時その排泄物が溜められ、水分の一部分は第２突出部１２を通して吸収体（図示せず）に吸収される。一方、粘度が低く透過しやすい排泄液であれば、主に第１突出部１１を透過したのち、内部空間１１Ｋにこれが捕捉される。このいずれの場合にも、肌面にまず当たる部分が第１突出部頂部１１Ｔであり、上記捕捉された排泄液ないし排泄物は肌に接触しにくくされている。これにより、尿や便、経血や下り物の排泄ののちにも、幅広く対応して極めて良好なサラッと感じが持続される。
The nonwoven fabric 10 (see FIG. 1) is excellent in excretion capturing ability.
In the nonwoven fabric 10 of this embodiment, since it has internal space 11K and 12K inside each of the 1st, 2nd protrusion parts 11 and 12 which protrude on both surfaces, it is various according to the physical property of excretion liquid and excrement. These can be captured and dealt with in various forms. For example, when the first surface side Z1 of the nonwoven fabric 10 is described as the skin surface side, if it is excrement having high viscosity and low permeability, the excrement is temporarily stored in the internal space 12K without passing through the surface sheet of the nonwoven fabric 10. And a part of the moisture is absorbed by the absorber (not shown) through the second protrusion 12. On the other hand, if the excretory liquid has a low viscosity and is easily permeable, the liquid is mainly trapped in the internal space 11K after passing through the first protrusion 11. In any of these cases, the portion that first hits the skin surface is the first protruding portion top portion 11T, and the captured excretory fluid or excrement is made difficult to come into contact with the skin. As a result, after the excretion of urine, feces, menstrual blood, and spillage, a very good and smooth feeling can be sustained widely.
（繊維密度（第１突出部＜第２突出部））
上記に加えて、不織布１０の繊維密度に関し、第１突出部１１の繊維密度（ｒ１）が第２突出部１２の繊維密度（ｒ２）より小さいことが好ましい。
これにより、不織布の第１面側Ｚ１から排泄物が供給された場合、第１突出部１１において通液抵抗が低減されてその排泄物（図示せず）が素早く内部空間１１Ｋに導かれる。また同時に、繊維密度差による毛管力で液が壁部を伝って第２突出部１２へと移行する。このことが、前述の親水性の差による作用と相俟って、液を肌から素早く引き離し、吸収体（図示せず）へと素早く引き渡す。その結果、排泄物は肌に付き難くなり、着用者の赤み、かぶれ、褥瘡等の発生を防止することができる。
さらに、第１突出部１１においては押圧に対して適度に潰れ肌に刺すような感じを与えず良好な肌当たりを実現することができる。一方、第２突出部１２は潰れにくく、排泄物を捕集した後の保形性に優れ、型崩れせずに良好なクッション性と捕集物の拡散防止性に優れる。
(Fiber density (first protrusion <second protrusion))
In addition to the above, regarding the fiber density of the nonwoven fabric 10, the fiber density (r 1 ) of the first protrusions 11 is preferably smaller than the fiber density (r 2 ) of the second protrusions 12.
Thereby, when excrement is supplied from the 1st surface side Z1 of a nonwoven fabric, fluid penetration resistance is reduced in the 1st projection part 11, and the excrement (not shown) is rapidly led to internal space 11K. At the same time, the liquid moves along the wall portion to the second projecting portion 12 by the capillary force due to the difference in fiber density. This, combined with the above-described effect due to the difference in hydrophilicity, quickly pulls the liquid away from the skin and quickly delivers it to the absorber (not shown). As a result, the excrement becomes difficult to adhere to the skin, and the occurrence of redness, rash, pressure ulcer, etc. of the wearer can be prevented.
Furthermore, in the 1st protrusion part 11, it does not give the feeling which is crushed moderately with respect to a press, and can achieve favorable skin contact. On the other hand, the 2nd protrusion part 12 is hard to be crushed, is excellent in the shape retention property after collecting excrement, is excellent in a good cushioning property and the spreading | diffusion prevention property of a collection thing without collapsing.
（繊維密度（第１面側＜第２面側））
また、第１突出部１１の第１面側ｚ１の繊維密度（ｒ１１ａ）と第２面側ｚ２の繊維密度（ｒ１１ｂ）とが、ｒ１１ａ＜ｒ１１ｂの関係にあることが好ましい。これにより、その部分での柔軟性と形状維持性とが両立されている。これらの作用はこの種の不織布において通常両立しにくいものであるが、上述のような特有の繊維の粗密を与えることにより、その部分において外部からの押圧に対する構造変形部分と構造維持部分とが形成され、上記の作用が得られる。たとえて言うとすれば、第１突出部の頂部１１Ｔにおいて第２面側Ｚ２の繊維が「密」であるため、相対的に硬い部分がアーチ状になって橋脚の機能を果たし、その第１面側Ｚ１は柔らかく全体においては剛直にならずに十分な柔軟性が維持されているため、触れた際の肌触りが柔らかく感じられる。さらに、上述の繊維の粗密構造は粗である第1面側Ｚ１と密である第２面側Ｚ２で圧力に対する挙動が異なっており、繊維が第１突出部の形状に沿って密に積み重なっていると考えられる第２面側Ｚ２は、第１突出部全体の構造変形によるクッション性を有し、構造の素早い復元性に寄与する。
また、第１突出部の頂部１１において第２面側Ｚ２の繊維密度が第１面側Ｚ１の繊維密度より高いため、前述の親水性の差と相俟って、体液は速やかに第２面側Ｚ２に移動し、第１面側Ｚ１に接する肌がドライに保たれる。
(Fiber density (first surface side <second surface side))
Also, the fiber density of the first surface side fiber density of z1 (r 11a) and the second surface side z2 of the first projecting portion 11 (r 11b), but is preferably in the relationship of r 11a <r 11b. Thereby, the softness | flexibility and the shape maintenance property in the part are compatible. These effects are usually difficult to achieve in this type of nonwoven fabric. However, by providing the above-mentioned specific fiber density, a structure deformation portion and a structure maintenance portion with respect to external pressure are formed at that portion. Thus, the above-described action can be obtained. For example, since the fibers on the second surface side Z2 are “dense” at the top portion 11T of the first projecting portion, the relatively hard portion becomes an arch shape and functions as a pier. Since the surface side Z1 is soft and does not become rigid as a whole and maintains sufficient flexibility, it feels soft when touched. Furthermore, the above-described fiber density structure is different in the behavior with respect to the pressure on the rough first surface side Z1 and the dense second surface side Z2, and the fibers are densely stacked along the shape of the first protrusion. The second surface side Z2 that is considered to have a cushioning property due to the structural deformation of the entire first protrusion contributes to a quick restoration of the structure.
In addition, since the fiber density on the second surface side Z2 is higher than the fiber density on the first surface side Z1 at the top portion 11 of the first protrusion, the body fluid is quickly brought into contact with the second surface due to the difference in hydrophilicity described above. The skin that moves to the side Z2 and is in contact with the first surface side Z1 is kept dry.
［比較例１］
比較例１は、特開２００８−２５０８１号公報（特許文献１）の実施例１に記載された製造方法により、筋状の凹凸形状を有することを特徴とする不織布の試験体を作製した。比較例１の不織布試験体ｄ１の坪量は２７ｇ／ｍ２であり、シート厚みは１．３ｍｍであった。また、第１面側の繊維の接触角は８４．５度であり、第２面側の繊維の接触角は７９．４度であった。不織布試験体ｄ１の凸状部の繊維密度が６５本／ｍｍ２であり、凹部には開口が形成されていた。
おむつは、実施例の不織布試験体ｃ１の代わりに不織布試験体ｄ１を用いて作製した。
[Comparative Example 1]
In Comparative Example 1, a non-woven fabric test body having a streak-like uneven shape was produced by the manufacturing method described in Example 1 of JP-A-2008-25081 (Patent Document 1). The basis weight of the nonwoven fabric test body d1 of Comparative Example 1 was 27 g / m 2 and the sheet thickness was 1.3 mm. Moreover, the contact angle of the fiber on the first surface side was 84.5 degrees, and the contact angle of the fiber on the second surface side was 79.4 degrees. Fiber density of the convex portion of the nonwoven fabric specimen d1 is 65 present / mm 2, the concave portion has been opened is formed.
The diaper was produced using the nonwoven fabric test body d1 instead of the nonwoven fabric test body c1 of the example.
［比較例２］
比較例２は、凹凸のない不織布であり、親水性が両面で異なる不織布試験体ｄ２を作成した。具体的には、実施例１と同じ繊維構成のウエブシートを作製し、１３９℃、風速１．５ｍ／ｓｅｃの熱風にて熱処理を行った。
比較例２の不織布試験体ｄ２の坪量は２９．６ｇ／ｍ２であり、シート厚みは２．３ｍｍであった。また、第１面側の繊維の接触角は７６．５度であり、第２面側の繊維の接触角は６８．４度であった。不織布試験体ｄ２の繊維密度が２４４本／ｍｍ２であった。
おむつは、実施例の不織布試験体ｃ１の代わりに不織布試験体ｄ２を用いて作製した。
[Comparative Example 2]
Comparative Example 2 was a non-woven fabric having no irregularities, and a non-woven fabric test body d2 having different hydrophilicity on both surfaces was prepared. Specifically, a web sheet having the same fiber configuration as in Example 1 was prepared and heat-treated with hot air at 139 ° C. and a wind speed of 1.5 m / sec.
The basis weight of the nonwoven fabric test body d2 of Comparative Example 2 was 29.6 g / m 2 , and the sheet thickness was 2.3 mm. Further, the contact angle of the fiber on the first surface side was 76.5 degrees, and the contact angle of the fiber on the second surface side was 68.4 degrees. Fiber density of the nonwoven fabric specimen d2 was 244 present / mm 2.
The diaper was produced using the nonwoven fabric test body d2 instead of the nonwoven fabric test body c1 of the example.
［比較例３］
比較例３は、特開平０３−１３７２５８号公報の実施例１記載の方法により、不織布試験体を作製した。比較例３の不織布試験体ｄ３の坪量は２７ｇ／ｍ２であり、シート厚みは５．５ｍｍであった。また、第１面側の繊維の接触角は７６．９度であり、第２面側の繊維の接触角は７６．３度であった。不織布試験体ｄ３の凸状部の繊維密度が８０本／ｍｍ２であり、凹部には開口が形成されていた。
おむつは、実施例の不織布試験体ｃ１の代わりに不織布試験体ｄ３を用いて作製した。
[Comparative Example 3]
In Comparative Example 3, a nonwoven fabric specimen was produced by the method described in Example 1 of JP-A-03-137258. The basis weight of the nonwoven fabric test body d3 of Comparative Example 3 was 27 g / m 2 , and the sheet thickness was 5.5 mm. Moreover, the contact angle of the fiber on the first surface side was 76.9 degrees, and the contact angle of the fiber on the second surface side was 76.3 degrees. Fiber density of the convex portion of the nonwoven fabric specimen d3 is eighty / mm 2, the concave portion has been opened is formed.
The diaper was produced using the nonwoven fabric test body d3 instead of the nonwoven fabric test body c1 of the example.
Claims (5)
前記第１、第２突出部は、該不織布の平面視交差する異なる方向において交互に連続して配され、前記第１面側にある繊維の親水性が前記第２面側にある繊維の親水性より低い不織布。 A first projecting portion projecting on the first surface side of the sheet-like nonwoven fabric in plan view and having an internal space, and a second projecting portion projecting on the second surface side opposite to the first surface side and having an internal space A wall portion of an annular structure between the top of the first projecting portion and the opening of the internal space, and the first and second projecting portions have a fusion portion between fibers. And
The first and second protrusions are alternately and continuously arranged in different directions intersecting in plan view of the nonwoven fabric, and the hydrophilicity of the fiber on the first surface side is the hydrophilicity of the fiber on the second surface side. Non-woven fabric that is less than good.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013124434A JP6273101B2 (en) | 2012-06-22 | 2013-06-13 | Non-woven |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012141395 | 2012-06-22 | ||
| JP2012141395 | 2012-06-22 | ||
| JP2013124434A JP6273101B2 (en) | 2012-06-22 | 2013-06-13 | Non-woven |
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| Publication Number | Publication Date |
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| JP2014025187A JP2014025187A (en) | 2014-02-06 |
| JP2014025187A5 true JP2014025187A5 (en) | 2016-07-21 |
| JP6273101B2 JP6273101B2 (en) | 2018-01-31 |
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| JP (1) | JP6273101B2 (en) |
| CN (1) | CN204237974U (en) |
| WO (1) | WO2013191077A1 (en) |
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| WO2015134371A1 (en) | 2014-03-06 | 2015-09-11 | The Procter & Gamble Company | Multi-component topsheets |
| EP3113740B1 (en) | 2014-03-06 | 2018-01-31 | The Procter and Gamble Company | Multi-component topsheets |
| CN106061454A (en) | 2014-03-06 | 2016-10-26 | 宝洁公司 | Three-dimensional substrates |
| JP6321505B2 (en) * | 2014-09-19 | 2018-05-09 | 花王株式会社 | Uneven fabric |
| CN107920939A (en) * | 2015-08-24 | 2018-04-17 | 花王株式会社 | Non-woven fabrics and the absorbent commodity for possessing it |
| EP3340954B1 (en) | 2015-08-26 | 2020-03-25 | The Procter and Gamble Company | Absorbent articles having three-dimensional substrates and indicia |
| JP6709068B2 (en) * | 2016-02-22 | 2020-06-10 | 花王株式会社 | Absorbent article |
| WO2018000410A1 (en) | 2016-07-01 | 2018-01-04 | The Procter & Gamble Company | Absorbent articles with improved topsheet dryness |
| CN109562006A (en) * | 2016-09-09 | 2019-04-02 | 宝洁公司 | Composition is applied to the system and method and its web of web |
| US10603229B2 (en) | 2017-02-13 | 2020-03-31 | The Procter & Gamble Company | Methods and tooling for making three-dimensional substrates for absorbent articles |
| WO2018204613A1 (en) | 2017-05-03 | 2018-11-08 | The Procter & Gamble Company | Absorbent article having multiple zones |
| JP6594936B2 (en) * | 2017-08-31 | 2019-10-23 | 花王株式会社 | Non-woven |
| EP4272716A1 (en) | 2017-11-06 | 2023-11-08 | The Procter & Gamble Company | Structure having nodes and struts |
| US10918532B2 (en) | 2017-12-19 | 2021-02-16 | The Procter & Gamble Company | Methods of making elastic belts for absorbent articles |
| JP7374404B2 (en) * | 2018-02-15 | 2023-11-07 | 大和紡績株式会社 | Nonwoven fabrics for absorbent articles and absorbent articles |
| EP4157180A1 (en) * | 2020-05-27 | 2023-04-05 | The Procter & Gamble Company | Absorbent article with topsheet comprising cellulose-based fibers |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4007685B2 (en) * | 1998-06-11 | 2007-11-14 | 三井化学株式会社 | Top sheet material for absorbent articles |
| JP3611838B2 (en) * | 2001-12-28 | 2005-01-19 | 花王株式会社 | Top sheet for absorbent articles |
| JP4716638B2 (en) * | 2002-09-26 | 2011-07-06 | 旭化成せんい株式会社 | Flexible non-woven fabric for sanitary materials and disposable sanitary materials |
| JP4090420B2 (en) * | 2002-11-13 | 2008-05-28 | 花王株式会社 | Top sheet for absorbent articles |
| JP4140835B2 (en) * | 2003-09-19 | 2008-08-27 | 大王製紙株式会社 | Absorbent articles |
| EP2189562B1 (en) * | 2007-08-28 | 2014-11-12 | Kao Corporation | Shaped sheet and absorbent article using the same |
| JP4975089B2 (en) * | 2008-12-25 | 2012-07-11 | 花王株式会社 | Nonwoven fabric and method for producing the same |
| JP5529518B2 (en) * | 2009-12-16 | 2014-06-25 | 花王株式会社 | Nonwoven manufacturing method |
-
2013
- 2013-06-13 WO PCT/JP2013/066318 patent/WO2013191077A1/en active Application Filing
- 2013-06-13 CN CN201390000350.7U patent/CN204237974U/en not_active Expired - Fee Related
- 2013-06-13 JP JP2013124434A patent/JP6273101B2/en active Active
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