JPH04152945A - Surface sheet for absorptive article - Google Patents
Surface sheet for absorptive articleInfo
- Publication number
- JPH04152945A JPH04152945A JP2277097A JP27709790A JPH04152945A JP H04152945 A JPH04152945 A JP H04152945A JP 2277097 A JP2277097 A JP 2277097A JP 27709790 A JP27709790 A JP 27709790A JP H04152945 A JPH04152945 A JP H04152945A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- opening
- liquid guide
- conveyor
- nonwoven 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.)
- Granted
Links
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 25
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 20
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 20
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 10
- 239000000057 synthetic resin Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 48
- 230000002745 absorbent Effects 0.000 claims description 15
- 239000002250 absorbent Substances 0.000 claims description 15
- 229920002994 synthetic fiber Polymers 0.000 claims description 13
- 239000012209 synthetic fiber Substances 0.000 claims description 13
- 210000001124 body fluid Anatomy 0.000 abstract description 18
- 239000010839 body fluid Substances 0.000 abstract description 18
- 239000000835 fiber Substances 0.000 abstract description 15
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000000155 melt Substances 0.000 abstract description 2
- 229920000642 polymer Polymers 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 8
- 230000035699 permeability Effects 0.000 description 7
- 239000004744 fabric Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 229920006255 plastic film Polymers 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000004750 melt-blown nonwoven Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920001410 Microfiber Polymers 0.000 description 1
- 208000003251 Pruritus Diseases 0.000 description 1
- 206010040880 Skin irritation Diseases 0.000 description 1
- 206010053262 Skin swelling Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000007803 itching Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 208000017520 skin disease Diseases 0.000 description 1
- 230000036556 skin irritation Effects 0.000 description 1
- 231100000475 skin irritation Toxicity 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Absorbent Articles And Supports Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、吸収性物品の表面シートに関し、更に詳し
くは、吸収性コアを被覆して生理用ナプキン、生理用タ
ンポン、使い捨てオムツなどの体液吸収性物品を構成す
るための表面シートに関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a surface sheet for absorbent articles, and more particularly, the present invention relates to a surface sheet for absorbent articles, and more specifically, it is used to coat an absorbent core and absorb body fluids such as sanitary napkins, sanitary tampons, and disposable diapers. The present invention relates to a topsheet for forming an absorbent article.
（従来の技術、発明が解決しようとする課題）従来、こ
の種の表面シートとして１着用者の肌に対する体液湿潤
感を少なく６１体液の透過性も比較的高めるようにする
ことなどのため、疎水性不織布に所与パターンの開口を
配列形成したものが知られている。しかし、この表面シ
ートの開口は、平面的構造であって、゛開口の各々の間
に延びる肌接触域の下面が吸収性コアの上面に直接に接
触する。そのため１体液を吸収したコアに体圧が加わっ
たときや２体液を吸収してコアが膨張することでこれが
表面シートに圧接したときなどにおいて、体液がコアか
ら開口を経て表面シートの上面に滲出し、所期の目的を
十分に達成することができない。(Prior Art, Problems to be Solved by the Invention) Conventionally, this type of topsheet has been made with hydrophobic materials, in order to reduce the feeling of wetness of body fluids on the wearer's skin, and to relatively increase the permeability of body fluids. It is known that a nonwoven fabric has openings arranged in a given pattern. However, the openings in this top sheet have a planar structure, and the lower surface of the skin contact area extending between each opening directly contacts the upper surface of the absorbent core. Therefore, when body pressure is applied to the core that has absorbed body fluids, or when the core expands after absorbing body fluids and comes into pressure contact with the top sheet, body fluids leak from the core to the top surface of the top sheet through the openings. However, the intended purpose cannot be fully achieved.
一方、前記表面シートの欠点を除去することなどを目的
とする表面シートとして、プラスチックフィルムに所与
パターンの開口を配列形成するとともに、これらの開口
の周縁からそれぞれ下方向に延出させた導液管を有する
ものが知られている、この表面シートは、着用者の肌へ
の接触面積及び肌に対する体液湿潤感を少なくし、体液
の透過性も比較的高くするという目的を一応達成するこ
とができる。しかし、体液を吸収したコアに体圧が加わ
ったときや、体液を吸収してコアが膨張することでこれ
が表面シートに圧接し、これによって導液管が変形して
閉塞したとき、表面シートが導液管による通気性を失う
。その結果、表面シートと着用者の肌との間が蒸れて肌
に皮膚病の原因となるかぶれ、ふやけ、かゆみなどを与
える。もとより、このように導液管が閉塞すると、その
導液管がその導液機能を失い、その閉塞後に表面シート
の上面に排泄された体液を内部へ導入することができな
い。また、この表面シートは、依然としてフィルム自体
の性質を完全に維持しているから、布に比較して肌ざわ
りが良好とはいえない。そこで、この発明は熱可塑性合
成樹脂から成るシート、より好ましくは熱可塑性合成繊
維を融着させた不織布から成るシート等を基材とし、そ
の一部から形状安定性のよい導液管を形成することによ
り、従来技術が有する前記欠点を除去することができる
表面シートの提供を目的とする。On the other hand, as a top sheet for the purpose of removing the defects of the top sheet, a given pattern of openings is arranged in a plastic film, and a liquid guide is formed that extends downward from the periphery of each of these openings. This surface sheet, which is known to have tubes, can achieve the objectives of reducing the contact area with the wearer's skin and the feeling of body fluid wetness on the skin, and making the permeability of body fluids relatively high. can. However, when body pressure is applied to the core that has absorbed body fluids, or when the core expands by absorbing body fluids and comes into pressure contact with the top sheet, which deforms and blocks the fluid conduit, the top sheet The ventilation provided by the liquid conduit is lost. As a result, the space between the top sheet and the wearer's skin becomes stuffy, causing skin irritation, swelling, and itching that can cause skin diseases. Naturally, when the liquid guide tube is blocked in this way, the liquid guide tube loses its liquid guide function, and the body fluid excreted onto the upper surface of the top sheet after the blockage cannot be introduced into the interior. Furthermore, since this top sheet still completely maintains the properties of the film itself, it cannot be said to feel as good to the touch as compared to cloth. Therefore, the present invention uses a sheet made of a thermoplastic synthetic resin, more preferably a sheet made of a nonwoven fabric to which thermoplastic synthetic fibers are fused, as a base material, and forms a liquid conduit with good shape stability from a part of the sheet. Accordingly, the present invention aims to provide a top sheet that can eliminate the above-mentioned drawbacks of the prior art.
（課題を解決するための手段）
前記目的を達成するための、この発明は、上面及び下面
開口を有し下方向へ延出して配列する導液管と、これら
の導液管の上面開口縁に連続する肌接触域とを形成した
吸収性物品の表面シートを前提とする。(Means for Solving the Problems) In order to achieve the above object, the present invention provides liquid guide tubes having upper and lower surface openings and extending downward and arranged, and edges of the upper surface openings of these liquid guide tubes. It is assumed that the top sheet of an absorbent article has a continuous skin contact area.
二の発明は、前記前提において、前記表面シートを熱可
塑性合成繊維から成るシート、または熱可塑性合成樹脂
から成るシートによって構成し、該シートの一部から前
記導液管を形成するとともにこの導液管をその下面開口
端においてその管壁よりも高密度であるか、またはリブ
を有するように形成する。The second invention is based on the above premise, in which the top sheet is composed of a sheet made of thermoplastic synthetic fibers or a sheet made of thermoplastic synthetic resin, and the liquid guide pipe is formed from a part of the sheet, and the liquid guide pipe is formed from a part of the sheet. The tube is formed so that its lower open end is denser than its tube wall or has ribs.
さらに、この発明の好ましい実施例においては、前記熱
可塑性合成繊維から成るシートが、！ｌ維を融着させて
なる不織布である。Furthermore, in a preferred embodiment of the present invention, the sheet made of the thermoplastic synthetic fiber is! It is a nonwoven fabric made by fusing l fibers.
（作 用）
前記構成を有するこの発明に係る表面シートは、内部に
吸収性コアを有する物品の表面を形成するために使用す
るものである。この使用状態においては１体液が少なく
とも各導液管を通って物品の内部に吸収される。この場
合、導液管は特にその下面開口端が高密度であるように
形成するか、またはリブを有するように形成することに
よって、下面開口がその変形に拘束を受け、その閉塞が
妨げられて吸収性コアに体液を効果的に移行させる（Ｍ
求項ユおよび２）。(Function) The top sheet according to the present invention having the above configuration is used to form the surface of an article having an absorbent core inside. In this state of use, one body fluid is absorbed into the interior of the article through at least each fluid conduit. In this case, by forming the liquid conduit so that the opening end of the lower surface is particularly dense or having ribs, the opening of the lower surface is restrained by its deformation and its closure is prevented. Effectively transfers body fluids to the absorbent core (M
Questions and 2).
表面シートを熱可塑性合成繊維から成るシート、より好
ましくは熱可塑性合成繊維を融着させて成る不織布にす
ると前記表面シートの上面は、プラスチックフィルムと
は異なり、着用者の肌にぴったり密着し過ぎることなく
接触し、有様感触を与えるとともに、肌との間で通気さ
せ、皮膚呼吸を妨げることがほとんどない（請求項１，
３および４）。If the top sheet is made of a sheet made of thermoplastic synthetic fibers, more preferably a nonwoven fabric made of thermoplastic synthetic fibers fused together, the top surface of the top sheet will come into close contact with the wearer's skin, unlike a plastic film. It makes contact with the skin without any problem, gives a certain feeling, and also allows air to flow between the skin and the skin, so that it hardly interferes with the skin's breathing (Claim 1,
3 and 4).
（実 施 例）
図面を参照して、この発明に係る表面シートの実施例を
説明すると、以下のとおりである。(Example) An example of the top sheet according to the present invention will be described below with reference to the drawings.
第１図は、この発明に係る表面シートを使用する一例と
しての、一部を破断した生理用ナプキンの斜視図を示す
。ナプキン１は、後記導液管を形成した表面シート１１
と、不透液性裏面シート２と、これらの間に介在させた
吸収性コア３とがら構成しである。FIG. 1 shows a partially cutaway perspective view of a sanitary napkin as an example of using the top sheet according to the present invention. The napkin 1 includes a top sheet 11 on which a liquid guiding pipe (described later) is formed.
, a liquid-impermeable backsheet 2, and an absorbent core 3 interposed between them.
第２図は表面シート１１の一部の模式斜視図を示し、第
３図および第４図は導液管１３の模式断面図を示す。表
面シート１１は、繊維１５から成る不織布を基材とし、
肌接触域（非開口域又は連続リブ状域）１２と多数の導
液管１３とから構成しである。導液管１３は、上面開口
１３ａと下面開口１３ｂを有し、上面開口１３ａの周縁
から下方向に延出させて配列形成するとともに、下面開
口１３ｂの端には導液管１３の一部である繊維を熱溶融
してリブ１４を形成しである。上面開口１３ａの周縁は
肌接触域１２に連続している。導液管１３はその径を上
面開口１３ａから下面開口１３ｂに向けて次第に小さく
したテーパーに形成しである。FIG. 2 shows a schematic perspective view of a part of the top sheet 11, and FIGS. 3 and 4 show schematic cross-sectional views of the liquid guide tube 13. The top sheet 11 has a nonwoven fabric made of fibers 15 as a base material,
It is composed of a skin contact area (non-opening area or continuous rib-like area) 12 and a large number of liquid guide pipes 13. The liquid guide tubes 13 have an upper surface opening 13a and a lower surface opening 13b, and are arranged so as to extend downward from the periphery of the upper surface opening 13a. The ribs 14 are formed by thermally melting certain fibers. The periphery of the upper surface opening 13a is continuous with the skin contact area 12. The liquid guiding pipe 13 is formed into a tapered shape whose diameter gradually decreases from the upper opening 13a toward the lower opening 13b.
表面シート１】の基材である不繊布は、熱可塑性合成繊
維１５を融着させて布形態を付与したものである。この
不織布には、通気性を付与しである場合と、不通気性を
付与しである場合とがある。こうした不織布の最も好ま
しいものとしては、従来公知のメルトブロー不織布の製
造手段によって得たものがある。この不織布には目付、
密度により、さらにはこの不織布の形成後に加熱圧着処
理することなどの手段により１通気性及び不通気性のい
ずれかを付与することができる。この不織布としては、
−船釣には、繊度を０．０１〜１ｄとしたオレフィン系
、ポリエステル系、ナイロン系、ＥＶＡ系などの熱可塑
性（疎水性）の合成繊維を融着させ、目付を１０〜５０
ｇ／ポ、なかんずく２０〜３５ｇ／ボになし、密度を０
．０３〜０．５ ｇ ／ｄになしであるものを使用する
ことが、良好な肌ざわり、特に布様の肌ざわり、及び所
要の強度を得るうえで好ましい。The nonwoven fabric that is the base material of the top sheet 1 is made by fusing thermoplastic synthetic fibers 15 to give it a cloth form. This nonwoven fabric may be made breathable or impermeable. The most preferred of such nonwoven fabrics are those obtained by conventionally known means for producing melt-blown nonwoven fabrics. This non-woven fabric has a basis weight,
Either air permeability or air impermeability can be imparted depending on the density or by means such as heat-pressing treatment after forming the nonwoven fabric. As this nonwoven fabric,
-For boat fishing, thermoplastic (hydrophobic) synthetic fibers such as olefin, polyester, nylon, and EVA with a fineness of 0.01 to 1 d are fused and the fabric weight is 10 to 50.
g/Po, especially 20-35g/Bo, density 0
．． It is preferable to use a material having a content of 0.03 to 0.5 g/d in order to obtain a good texture, especially a cloth-like texture, and the required strength.
通気性不織布の場合、ＪＩＳ、 Ｌ、１０１８による通
気度を１０〜５００ｃｃ／ ｃａｌ ／ ｓｅｅになし
、ＪＩＳ、 Ｌ、 １０９２による耐水圧を１０〜２５
０ｍｍになしであるものが、肌接触域１２における所要
の通気性を得、肌接触域１２の下面からその上面への体
液の逆流を防止するうえで好ましい。ちなみに、従来一
般に、吸収性物品の表面シートとして使用されている不
織布は、通気度が５００ｃｃ／ｃｉ／ｓｅｅ以上で通気
性には優れているが、耐水圧がほとんどない。In the case of breathable nonwoven fabric, the air permeability according to JIS, L, 1018 is 10-500cc/cal/see, and the water pressure resistance is 10-25 according to JIS, L, 1092.
0 mm is preferable in order to obtain the required air permeability in the skin contact area 12 and to prevent body fluids from flowing back from the lower surface of the skin contact area 12 to its upper surface. Incidentally, nonwoven fabrics conventionally generally used as topsheets of absorbent articles have an air permeability of 500 cc/ci/see or more and are excellent in air permeability, but have almost no water pressure resistance.
表面シート１１の素材には上述の不織布に代え熱可塑性
（疎水性）合成樹脂フィルムを使うこともできる。その
場合の合成樹脂フィルムには前記不織布と同様にオレフ
ィン系、ポリエステル系、ナイロン系、ＥＶＡ系などの
樹脂から成る目付１０〜］００ｇ＃ｒ？のフィルムを利
用すればよい。このような合成樹脂フィルムは導液管１
３を除いて不通気性であり、しかも布様の肌ざわりを得
ることはできないが、この導液管１３に対してもこの発
明を実施することができる。As the material for the top sheet 11, a thermoplastic (hydrophobic) synthetic resin film may be used instead of the above-mentioned nonwoven fabric. In that case, the synthetic resin film is made of olefin-based, polyester-based, nylon-based, EVA-based resin, etc., similar to the nonwoven fabric, and has a basis weight of 10~]00g#r? You can use this film. Such a synthetic resin film is used as the liquid guide pipe 1.
The present invention can also be applied to the liquid guide tube 13, although it is impermeable except for the tube 3 and does not have a cloth-like feel.
上面開口１３ａに関しては、 直径０．２〜５ｍ、なか
んずく０．７〜３．５閣になし、その合計開口面積率を
２０〜７０％になし、導液管１３の高さ （長さ）Ｈを
０．５〜５１１Ｉｍになしたものが、導液管１３の上面
からその下面への高い導液効果を得る一方、その下面か
ら上面への体液の流部を抑制するうえで好ましい。Regarding the upper surface opening 13a, the diameter is 0.2 to 5 m, especially 0.7 to 3.5 m, and the total opening area ratio is 20 to 70%, and the height (length) of the liquid guide pipe 13 is H. It is preferable to set the diameter to 0.5 to 511 Im in order to obtain a high liquid guiding effect from the upper surface of the liquid guiding pipe 13 to its lower surface and to suppress the flow of body fluid from the lower surface to the upper surface.
第３図および第４図に示すように、導液管１３は下面間
口１３ｂの端縁がリブ１４によって形成される場合（第
３図参照）と、高密度領域１７によって形成される場合
（第４図参照）とがある。リブ１４はその厚みｔｌが、
リブ１４近傍における導液管１３の周壁１６の厚みｔ
２よりも厚くなっている。 リブ１４は前記端縁の全周
に連続して設けであることが好ましいが、全周の一部に
おいて不連続であってもよい。 また、厚みｔ、が全周
において一様である必要はなく、不同であっても差し支
えない、−刃高密度領域１７は後述するようにシート１
１が熱可塑性合成繊維１５から成る場合に、その繊維１
５の一部を溶融させて、例えばフィルム化したときなど
に得ることができ、周壁１６において繊維形態にある部
分よりも一般に剛性が高い。この繊維１５の溶融におい
て、繊維１５の熱収縮量が多い時は高密度領域Ｉ７がリ
ブの形態を呈することもある。このように構成した導液
管１３は上面開口１３ａが肌、接触域１２によってその
変形に拘束を受け、一方下面開口１３ｂがリブ】４また
は高密度領域１７によってその変形に拘束を受け、導液
管１３はかかるリブ１４や高密度領域１７がなく、−様
な厚みや密度から成る導液管と比へ、変形や圧潰を生じ
にくくなる。換言すると導液管１３は、様々な使用環境
下において形状が安定しており、容易に閉塞することが
なく、従って導液管としての機能を損なうことがない。As shown in FIGS. 3 and 4, the liquid guiding pipe 13 is formed when the edge of the lower surface opening 13b is formed by the rib 14 (see FIG. 3), and when it is formed by the high density region 17 (see FIG. 3). (See Figure 4). The thickness tl of the rib 14 is
Thickness t of peripheral wall 16 of liquid guiding pipe 13 near rib 14
It is thicker than 2. It is preferable that the ribs 14 are provided continuously around the entire circumference of the edge, but they may be discontinuous at a part of the entire circumference. Further, the thickness t does not need to be uniform over the entire circumference, and may be different.
1 consists of thermoplastic synthetic fiber 15, the fiber 1
5 can be obtained by melting a portion of the material, for example, into a film, and is generally more rigid than the portion of the peripheral wall 16 that is in the form of fibers. In this melting of the fibers 15, when the amount of thermal contraction of the fibers 15 is large, the high-density region I7 may take the form of a rib. In the liquid guide tube 13 configured in this way, the upper surface opening 13a is restrained in its deformation by the skin and the contact area 12, while the lower surface opening 13b is restrained in its deformation by the ribs 4 or the high-density region 17, and the liquid guide The tube 13 does not have such ribs 14 or high-density regions 17, and is less likely to deform or collapse compared to a liquid guide tube having a similar thickness and density. In other words, the liquid guide pipe 13 has a stable shape under various usage environments, is not easily blocked, and therefore does not impair its function as a liquid guide pipe.
第５図ないし第７図は、導液管１３の別の形態を示す第
３図に相当する断面図である。第５図示の導液管１３は
、その径を上面開口１３ａから下面開口１３ｂに向けて
次第に小さくしである点では第３図示のそれと同じであ
るが、下面開口１３ｂを第３図示のそれよりもかなり小
さく形成したうえで、リブ１４を設けである。場合によ
っては、下面開口１３ｂが僅かな間隙を残しほとんど閉
じていてもよい。5 to 7 are cross-sectional views corresponding to FIG. 3 showing another form of the liquid conduit 13. The liquid guiding pipe 13 shown in the fifth figure is the same as that shown in the third figure in that its diameter gradually decreases from the upper opening 13a toward the lower opening 13b, but the lower opening 13b is smaller than that shown in the third figure. The ribs 14 are also formed in a fairly small size. In some cases, the lower opening 13b may be almost closed with a slight gap left.
第６図示の導液管１３は、その壁面を実質的に垂直に、
かつ、上下面開口１３ａ、１３ｂの径を実質的に同じに
形成し、下面開口１３ｂの端縁にリブ１４を設けである
。The liquid guiding pipe 13 shown in FIG. 6 has its wall surface substantially perpendicular to
Further, the diameters of the upper and lower openings 13a and 13b are formed to be substantially the same, and a rib 14 is provided at the edge of the lower opening 13b.
第６図示の導液管１３は、その径を上面開口１３ａから
下面開口１３ｂに向けて次第に大きくしたテーパーに形
成してあり、そのうえで下面開口１３ｂの端縁にリブ１
４を設けである。The liquid guiding pipe 13 shown in FIG. 6 is tapered so that its diameter gradually increases from the upper surface opening 13a toward the lower surface opening 13b.
4 is provided.
表面シート１１は、その製造工程の図示を省略するが、
例えばこうして製造することができる。メルトブロー装
置から溶融ポリマーを吐き出し、高速高温空気流で極細
繊維化して、開口１３ａと同様な形状、大きさ、配列の
成形要素を有するコンベアの上面に堆積して不織布化す
る。同時に、コンベアの下面に配置したサクションで繊
維が軟化状態にある不織布の所与域に負圧をかけ、この
負圧をかけた域におけるコンベアの開口群に位置する不
織布部分を下方向に吸引延伸する。こうすると、不織布
の当該吸引部分が上面に開口を有する管状部分として垂
下するとともに、この管状部分の下面が破れ繊維がほぐ
れた状態で開口したものが得られる。すなわち、上下面
開口１３ａ及び１３ｂを有する導液管１３が形成される
。繊維が延伸され、はぐれている下面開口１３ｂは特に
繊維密度が低い状態にある。導液管１３を形成するため
の前記処理は、必要に応して、まず不織布を形成し、こ
れを加熱ロール（エンボスロールを含む）や超音波で処
理することで、その表面を一層平滑にし、かつ、融着割
合及び強度を高めておき、その後になすこともできる。Although illustration of the manufacturing process of the top sheet 11 is omitted,
For example, it can be manufactured in this way. The molten polymer is discharged from the melt blowing device and is made into ultrafine fibers by a high-speed, high-temperature air flow, and deposited on the top surface of a conveyor having molding elements having the same shape, size, and arrangement as the openings 13a to form a nonwoven fabric. At the same time, a suction placed on the underside of the conveyor applies negative pressure to a given area of the nonwoven fabric where the fibers are in a softened state, and in the area where this negative pressure is applied, the portion of the nonwoven fabric located in the group of openings of the conveyor is sucked and stretched downward. do. In this way, the suction portion of the nonwoven fabric hangs down as a tubular portion having an opening on the upper surface, and the lower surface of this tubular portion is torn and opened with the fibers loosened. That is, a liquid guiding pipe 13 having upper and lower openings 13a and 13b is formed. The fiber density is particularly low in the lower opening 13b where the fibers are stretched and separated. The above-mentioned treatment for forming the liquid guide pipe 13 is performed by first forming a nonwoven fabric and treating it with a heating roll (including an embossing roll) or ultrasonic waves to make the surface even smoother, if necessary. , and it can also be done after increasing the fusion ratio and strength.
また、下面開口１３ｂの開口を十分に大きくするための
適宜の補助的手段を併用することもできる。Further, appropriate auxiliary means can be used in combination to make the opening of the lower surface opening 13b sufficiently large.
さらに下面開口１３ｂを有する導液管１３を形成したこ
とに続いて、コンベアの下面側に位置し、コンベアの送
り方向に回転している加熱ローラーに下面開口１３ｂの
端縁を接触させて溶融し、それに伴う熱可塑性合成樹脂
の熱収縮と表面張力の作用によってリブ１４および／ま
たは高密度部位１７を形成する。下面開口１３ｂは、そ
の後冷却ゾーンを通過することで冷却され、その形状が
安定化する。Further, following the formation of the liquid conduit 13 having the lower opening 13b, the edge of the lower opening 13b is brought into contact with a heating roller located on the lower side of the conveyor and rotating in the feeding direction of the conveyor to melt it. , the ribs 14 and/or the high-density portions 17 are formed by the heat shrinkage of the thermoplastic synthetic resin and the effect of surface tension. The lower surface opening 13b is then cooled by passing through the cooling zone, and its shape is stabilized.
上記以外にも、リブ１４の形成は、下面開口１３ｂの端
縁に、例えば固形分含有量の多い接着剤を塗布・硬化さ
せるなど、塗布後に固形化する第三物質の塗布によって
形成することもできる。In addition to the above, the ribs 14 may also be formed by applying a third substance that solidifies after application, such as by applying and curing an adhesive with a high solids content to the edge of the lower surface opening 13b. can.
また合成樹脂フィルムを素材にする場合は、該フィルム
を既述のような成形要素を有するコンベアに供給し、続
いて周知の方法を利用して熱成形すれば導液管１３を形
成することができるから、その後は前記不織布と同様に
処理してυブＩ４を得ればよい。If a synthetic resin film is used as the material, the liquid guide pipe 13 can be formed by feeding the film to a conveyor having molding elements as described above and then thermoforming it using a well-known method. Since it can be done, it is then necessary to process it in the same manner as the nonwoven fabric to obtain υbu I4.
第８図に例示するように、表面シート１１は、導液管１
３の端縁にリブ１４を有する下面開口１３ｂをコア３に
対向させてこれを被覆するのに使用する。As illustrated in FIG. 8, the surface sheet 11
A lower opening 13b having a rib 14 on the edge of the core 3 is used to face the core 3 and cover it.
下面開口１３ｂの端縁はコア３に適宜埋めるようにして
もよい。The edge of the lower opening 13b may be buried in the core 3 as appropriate.
（発明の効果）
以上の構成及び作用を有する本発明に係る表面シートに
よれば、導液管の開口形状が容易に変形したり、圧潰し
たりすることがなく、換言すると導液管の上下面の各開
口が容易に閉塞することがなく、従って吸収性コアに体
液を効果的に移行させることが可能になる（請求項１お
よび２に対応）。(Effects of the Invention) According to the surface sheet according to the present invention having the above-described configuration and operation, the opening shape of the liquid guide pipe is not easily deformed or crushed. The openings on the lower surface do not get clogged easily, so body fluids can be effectively transferred to the absorbent core (corresponding to claims 1 and 2).
表面シートは熱可塑性合成繊維から成るシート、より好
ましくは繊維形態を有するメルトブロー不織布とすると
、その表面シートをプラスチックフィルムでは得られな
い布様肌ざわりのものにすることができる（請求項１．
３および４に対応）。When the top sheet is a sheet made of thermoplastic synthetic fibers, more preferably a melt-blown nonwoven fabric in the form of fibers, the top sheet can have a cloth-like feel that cannot be obtained with plastic films (Claim 1).
3 and 4).
【図面の簡単な説明】
第１図は、本発明に係る表面シートを使用すべき物品の
一例を示す生理用ナプキンを一部切欠した斜視図、
第２図は、前記表面シートの模式斜視図。
第３図は、前記表面シートの導液管の模式縦断面図、
第４図ないし第７図は、導液管の各種態様を示す、第３
図に相当する模式縦断面図、および第８図は、前記物品
の模式部分拡大断面図である。
１１・表面シート １２・・・肌接触域１３・
・導液管 １３ａ・・・上面開口＋３ｂ・
・・下面開口 １４・・・リブ１５・・・繊維
１６・・・管壁１７・・・高密度部位
（Ｌ−一
第
図
第
図
第
図
第
図
第
図
ｊＤ
第
図
第
図
第
図[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a partially cutaway perspective view of a sanitary napkin showing an example of an article for which the top sheet according to the present invention is to be used; FIG. 2 is a schematic perspective view of the top sheet. . FIG. 3 is a schematic vertical cross-sectional view of the liquid guide tube of the surface sheet, and FIGS. 4 to 7 are third views showing various aspects of the liquid guide tube.
A schematic vertical sectional view corresponding to the figure and FIG. 8 are a schematic partial enlarged sectional view of the article. 11・Surface sheet 12...Skin contact area 13・
・Liquid guide pipe 13a...Top opening +3b・
... Lower surface opening 14 ... Rib 15 ... Fiber 16 ... Tube wall 17 ... High density region (L-1 Figure Figure Figure Figure Figure Figure jD Figure Figure Figure Figure
Claims (4)
る導液管と、これら導液管の上面開口の周縁に連続する
肌接触域とを形成した吸収性物品の表面シートにおいて
、該表面シートを熱可塑性合成繊維から成るシートによ
って構成し、該シートの一部から前記導液管を形成する
とともに前記導液管がその下面開口端においてその管壁
よりも高密度に形成してあることを特徴とする前記表面
シート。(1) In a top sheet of an absorbent article, the top sheet of an absorbent article has liquid guide tubes extending downward and arranged in an arrangement having upper and lower surface openings, and a skin contact area continuous to the periphery of the upper surface opening of these liquid guide tubes, The surface sheet is composed of a sheet made of thermoplastic synthetic fiber, and the liquid guide tube is formed from a part of the sheet, and the liquid guide tube is formed at a lower open end thereof with a higher density than the tube wall. The top sheet is characterized in that:
る導液管と、これら導液管の上面開口の周縁に連続する
肌接触域とを形成した吸収性物品の表面シートにおいて
、該表面シートを熱可塑性合成樹脂から成るシートによ
って構成し、該シートの一部から前記導液管を形成する
とともに前記導液管の下面開口端にリブが形成してある
ことを特徴とする前記表面シート。(2) In a top sheet of an absorbent article, the top sheet of an absorbent article is formed with liquid guide tubes having upper and lower surface openings extending downward and arranged, and a skin contact area continuous to the periphery of the upper surface opening of these liquid guide tubes, The surface sheet is composed of a sheet made of thermoplastic synthetic resin, and the liquid guide pipe is formed from a part of the sheet, and a rib is formed at the open end of the lower surface of the liquid guide pipe. surface sheet.
る請求項２記載の表面シート。(3) The topsheet according to claim 2, wherein the thermoplastic synthetic resin is a thermoplastic synthetic fiber.
合成繊維を融着させて成る不織布である請求項１または
３記載の表面シート。(4) The top sheet according to claim 1 or 3, wherein the sheet made of thermoplastic synthetic fibers is a nonwoven fabric made by fusing thermoplastic synthetic fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2277097A JP2907992B2 (en) | 1990-10-16 | 1990-10-16 | Surface sheet for absorbent articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2277097A JP2907992B2 (en) | 1990-10-16 | 1990-10-16 | Surface sheet for absorbent articles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04152945A true JPH04152945A (en) | 1992-05-26 |
| JP2907992B2 JP2907992B2 (en) | 1999-06-21 |
Family
ID=17578736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2277097A Expired - Lifetime JP2907992B2 (en) | 1990-10-16 | 1990-10-16 | Surface sheet for absorbent articles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2907992B2 (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5449352A (en) * | 1993-03-24 | 1995-09-12 | Mitsui Petrochemical Industries, Ltd. | Topsheet for use in disposable body fluid absorptive articles |
| US5522811A (en) * | 1992-11-30 | 1996-06-04 | Uni-Charm Corporation | Topsheet for use in disposable body fluid absorptive goods |
| US5660788A (en) * | 1993-11-18 | 1997-08-26 | The Procter & Gamble Company | Process for forming a apertured, three-dimensional, macroscopically expanded, plastic web for absorbent articles having a textured wearer-contacting surface |
| EP0945537A1 (en) | 1998-03-26 | 1999-09-29 | Uni-Charm Corporation | Topsheet for body fluids absorbent article |
| USH1827H (en) * | 1993-11-18 | 2000-01-04 | Cooper; John T. | Fibrous and apertured, three-dimensional macroscopically expanded plastic web |
| CN1054897C (en) * | 1995-03-03 | 2000-07-26 | 花王株式会社 | Surface sheet for absorbent article |
| WO2002022344A1 (en) * | 2000-09-14 | 2002-03-21 | Daio Paper Corporation | Plastic sheet with cloth-like appearance, surface material for absorbing article using the plastic sheet, and method of manufacturing the surface material |
| JP2006204761A (en) * | 2005-01-31 | 2006-08-10 | Daio Paper Corp | Absorbent article |
| WO2008152999A1 (en) * | 2007-06-13 | 2008-12-18 | Uni-Charm Corporation | Absorbent article and nonwoven fabric sheet |
| US8273942B2 (en) | 1993-08-17 | 2012-09-25 | The Procter & Gamble Company | Disposable absorbent article having capacity to store low-viscosity fecal material |
| WO2013129325A1 (en) * | 2012-02-29 | 2013-09-06 | ユニ・チャーム株式会社 | Absorbent article |
| JP2013208409A (en) * | 2012-03-30 | 2013-10-10 | Unicharm Corp | Absorbent article |
| DE112017006052T5 (en) | 2016-11-30 | 2019-09-19 | Kao Corporation | Absorbent article and method of making a three-dimensional opening sheet used therefor |
| CN111107817A (en) * | 2017-11-17 | 2020-05-05 | 尤妮佳股份有限公司 | Absorbent article |
-
1990
- 1990-10-16 JP JP2277097A patent/JP2907992B2/en not_active Expired - Lifetime
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5522811A (en) * | 1992-11-30 | 1996-06-04 | Uni-Charm Corporation | Topsheet for use in disposable body fluid absorptive goods |
| US5620712A (en) * | 1993-03-24 | 1997-04-15 | Mitsui Petrochemical Industries, Ltd | Apparatus for making the topsheet of a fluid absorptive article |
| US5628844A (en) * | 1993-03-24 | 1997-05-13 | Mitsui Petrochemical Industries, Ltd. | Method for making a topsheet for use in disposable body fluid absorptive articles |
| US5449352A (en) * | 1993-03-24 | 1995-09-12 | Mitsui Petrochemical Industries, Ltd. | Topsheet for use in disposable body fluid absorptive articles |
| US8273942B2 (en) | 1993-08-17 | 2012-09-25 | The Procter & Gamble Company | Disposable absorbent article having capacity to store low-viscosity fecal material |
| US5660788A (en) * | 1993-11-18 | 1997-08-26 | The Procter & Gamble Company | Process for forming a apertured, three-dimensional, macroscopically expanded, plastic web for absorbent articles having a textured wearer-contacting surface |
| US5928210A (en) * | 1993-11-18 | 1999-07-27 | The Procter & Gamble Company | Apertured, three-dimensional, macroscopically-expanded, plastic web for absorbent articles having a textured wearer-contacting surface |
| USH1827H (en) * | 1993-11-18 | 2000-01-04 | Cooper; John T. | Fibrous and apertured, three-dimensional macroscopically expanded plastic web |
| CN1054897C (en) * | 1995-03-03 | 2000-07-26 | 花王株式会社 | Surface sheet for absorbent article |
| EP0945537A1 (en) | 1998-03-26 | 1999-09-29 | Uni-Charm Corporation | Topsheet for body fluids absorbent article |
| US6274218B1 (en) * | 1998-03-26 | 2001-08-14 | Uni-Charm | Topsheet for body fluids absorbent article |
| WO2002022344A1 (en) * | 2000-09-14 | 2002-03-21 | Daio Paper Corporation | Plastic sheet with cloth-like appearance, surface material for absorbing article using the plastic sheet, and method of manufacturing the surface material |
| KR100821997B1 (en) * | 2000-09-14 | 2008-04-15 | 다이오세이시가부시끼가이샤 | Plastic sheet with cloth-like appearance, surface material for absorbing article using the plastic sheet, and method of manufacturing the surface material |
| US8188333B2 (en) | 2000-09-14 | 2012-05-29 | Daio Paper Corporation | Plastic sheet looking like cloth and surface material of absorbing goods utilizing the sheet, and manufacturing method thereof |
| JP4628120B2 (en) * | 2005-01-31 | 2011-02-09 | 大王製紙株式会社 | Absorbent articles |
| JP2006204761A (en) * | 2005-01-31 | 2006-08-10 | Daio Paper Corp | Absorbent article |
| WO2008152999A1 (en) * | 2007-06-13 | 2008-12-18 | Uni-Charm Corporation | Absorbent article and nonwoven fabric sheet |
| WO2013129325A1 (en) * | 2012-02-29 | 2013-09-06 | ユニ・チャーム株式会社 | Absorbent article |
| JP2013208409A (en) * | 2012-03-30 | 2013-10-10 | Unicharm Corp | Absorbent article |
| DE112017006052T5 (en) | 2016-11-30 | 2019-09-19 | Kao Corporation | Absorbent article and method of making a three-dimensional opening sheet used therefor |
| US11253406B2 (en) | 2016-11-30 | 2022-02-22 | Kao Corporation | Absorbent article and method for manufacturing sheet with three-dimensional opening used therefor |
| CN111107817A (en) * | 2017-11-17 | 2020-05-05 | 尤妮佳股份有限公司 | Absorbent article |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2907992B2 (en) | 1999-06-21 |
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