JP3877923B2 - Liquid-permeable composite sheet for disposable body fluid absorbent articles - Google Patents

Liquid-permeable composite sheet for disposable body fluid absorbent articles Download PDF

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JP3877923B2
JP3877923B2 JP37296099A JP37296099A JP3877923B2 JP 3877923 B2 JP3877923 B2 JP 3877923B2 JP 37296099 A JP37296099 A JP 37296099A JP 37296099 A JP37296099 A JP 37296099A JP 3877923 B2 JP3877923 B2 JP 3877923B2
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material portion
web
sheet
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composite sheet
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JP2001187087A (en
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裕樹 合田
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Uni Charm Corp
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Uni Charm Corp
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Priority to JP37296099A priority Critical patent/JP3877923B2/en
Priority to TW089127272A priority patent/TW523403B/en
Priority to KR1020000079635A priority patent/KR100707154B1/en
Priority to IDP20001139D priority patent/ID28738A/en
Priority to SG200007631A priority patent/SG86454A1/en
Priority to MYPI20006139A priority patent/MY120867A/en
Priority to CNB001375547A priority patent/CN1204866C/en
Publication of JP2001187087A publication Critical patent/JP2001187087A/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51121—Topsheet, i.e. the permeable cover or layer facing the skin characterised by the material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/512—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its apertures, e.g. perforations

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Laminated Bodies (AREA)

Description

【０００１】
【発明の属する技術分野】
この発明は、使い捨ておむつや生理用ナプキン等の使い捨て体液吸収性物品に使用するのに好適な透液性の複合シートに関する。
【０００２】
【従来の技術】
図６は、特開昭６２−５７５５１号公報に開示されている感触が柔軟な微小開口化プラスチックシート１１０の斜視図である。このプラスチックシートは、使い捨ておむつの表面シート等として使用するのに好適なもので、シート１１０の表面には多数の円筒状突起１２０が形成され、突起１２０の頂部には微小開口部１２５が形成されている。かかるシート１１０は、柔軟で布様の感触を示すと説明されている。
【０００３】
図７は、特開平７−３２８０６１号公報に開示されている生理用ナプキン２００の斜視図である。このナプキン２００の表面シート２１０は、不織布２１１と、不織布２１１の上面に接合する複数条の帯状プラスチックシート２１２とからなるもので、帯状プラスチックシート２１２は、互いに平行で、ナプキン２００の長手方向へ延びている。ナプキン２００では、プラスチックシート２１２の存在によって、経血による汚れを隠蔽することができる。
【０００４】
【発明が解決しようとする課題】
前記公知の微小開口化プラスチックシート１１０を生理用ナプキンの表面シートに使用して、表面シート下方に位置する吸液性コアの経血による汚れを隠蔽する方法の一つは、シート１１０に例えば炭酸カルシウムや硫酸バリウム等の無機質粒子を充填することである。また、隠蔽力を高めるには、その粒子の充填量を増やせばよい。ただし、充填量のみを増やせば、シートの強度が低下するとか、シート製造時のおける厚みのふれ幅が大きくなるという問題を生じるから、使用するシートの厚みを増すことによって、それらの問題を解消しなければならない。しかし、そのようにすればシートは高剛性のものになって布様の感触を失い、円筒状突起１２０もまた柔軟性の乏しいものになりかねない。
【０００５】
前記特開平７−３２８０６１号公報は、不織布のように比較的平坦なシートからなる表面シート２１０について、帯状プラスチックシート２１２を採用すれば隠蔽力を向上させることができると教示してはいるが、前記円筒状突起１２０を有するようなプラスチックシートに対しては、その帯状プラスチックシートの活用の仕方を全く教示していない。
【０００６】
この発明は、これら先行技術を参考にして、使い捨ての体液吸収性物品の例えば表面材に使用される透液性のシートに柔軟な肌触りと、高い隠蔽力とを付与することを課題にしている。
【０００７】
【課題を解決するための手段】
【０００８】
前記課題解決のためにこの発明が対象とするのは、上面側にプラスチックシート層を有し、下面側に前記プラスチックシート層と接合している繊維集合層を有し、使い捨ての体液吸収性物品に使用される透液性複合シートである。
【０００９】
かかる複合シートにおいて、前記発明が特徴とするところは、前記プラスチックシート層が、一方向へ互いに離間平行して延びる複数条の帯状材料部分と、前記帯状材料部分に接合して実質的に前記繊維集合層上面の全体を覆い前記帯状材料部分よりも厚さが薄い薄膜状材料部分とからなり、前記薄膜状材料部分には、その上面側に前記帯状材料部分が接合する一方、その下面側に前記繊維集合層が接合し、かつ、隣り合う前記帯状材料部分どうしの間において前記一方向へ間欠的に並ぶ多数の透液性開孔が形成されているとともに前記開孔の縁に沿って起伏を繰り返しながら前記複合シートの上面上方へ延びる起立部分が形成されていること、にある。
【００１０】
この発明には、次のような好ましい実施態様がある。
【００１１】
【００１２】
【００１３】
【００１４】
前記プラスチックシート層が無機質充填剤を含有し、前記帯状材料部分における単位面積当たりの前記充填剤の含有量が、前記薄膜状材料部分におけるそれよりも高い態様。
【００１５】
【００１６】
【００１７】
【発明の実施の形態】
添付の図面を参照し、使い捨ての体液吸収性物品に使用される透液性複合シートおよびその製造方法の詳細を説明すると、以下のとおりである。
【００１８】
図１は、使い捨ての体液吸収性物品の一例である生理用ナプキン１の部分破断斜視図である。ナプキン１は、透液性表面シート２と、不透液性裏面シート３と、これら両シート２，３間に介在する吸液性コア４とからなり、表裏面シート２，３は、コア４の周縁から延出する部分で重なり合い、ライン６において溶着または接着によって互いに接合している。ナプキン１は、Ｘ方向へ延びる幅とＹ方向へ延びる長さとを有する。かようなナプキン１には、この発明に係る複合シートが表面シート２として使用されている。
【００１９】
図２，３，４は、ナプキン１の部分拡大図と、そのＩＩＩ−ＩＩＩ線、ＩＶ−ＩＶ線断面図である。ただし、裏面シート３とコア４とが仮想線で示されている。表面シート２は、その上面側に位置するプラスチックシート層１１と、繊維１３の集合体である不織布層１２とからなる複合シートであって、これら両層１１，１２が溶着または接着により、互いに接合している。プラスチックシート層１１は、互いに平行してＹ方向へ延びる複数条の帯状材料部分１６と、帯状材料部分１６の下側にあって不織布層１２の上面の実質的に全体を覆う薄膜状材料部分１７とを有し、これら両部分１６，１７が熱可塑性プラスチックで形成されていて、重なり合う部分において互いに溶着している。薄膜状材料部分１７は、互いに平行してＹ方向へ延びる複数条の実質的な意味での平坦部分１８と、隣り合う平坦部分１８どうしの間に位置してＹ方向へ延びる多数の開孔１９と、隣り合う平坦部分１８において互いに向かい合う縁部２１からＸ方向へ延びて開孔１９を横断するブリッジ部分２０と、平坦部分１８の縁部２１において図の上方へ延びる起立部分２２とを有する。起立部分２２は、不規則な起伏を繰り返しながらＹ方向へ延びる概ね鋸歯状を呈している部分である。
【００２０】
不織布層１２は、薄膜状材料部分１７の平坦部分１８に図の下方から接合しており、開孔１９では不織布層１２の一部が露出している。
【００２１】
裏面シート３には、熱可塑性プラスチックシートや熱可塑性合成繊維からなる不織布、これらシートと不織布とがラミネートされているもの等が使用される。
【００２２】
コア４には、粉砕パルプや粉砕パルプと高吸水性ポリマーとの混合物等が使用される。
【００２３】
図３，４において、帯状材料部分１６は、薄膜状材料部分１７の平坦部分１８に、好ましくは平坦部分１８のそれぞれに設けられているもので、０．０１〜０．３ｍｍの厚さと、０．１〜４ｍｍの幅Ｓ１とを有する。厚さが０．０１ｍｍ未満の場合には、薄膜状材料部分１７の隠蔽性を高める効果が乏しく、また厚さが０．３ｍｍを超えるときには、剛性が高くなって肌に対する刺激が強くなりすぎることがある。幅Ｓ１は、平坦部分１８のそれとほぼ同じであるか、またはそれよりも小さい。ただし、その幅Ｓ１は、平坦部分１８での隠蔽性を高めるために、平坦部分１８の幅Ｗ１の１／３以下とならないようにすることが好ましく、１／２以下とならないようにすることがさらに好ましい。かかる帯状材料部分１６は、熱可塑性プラスチックを帯状に押出成形して薄膜状材料部分１７の上に供給することによって得られるが、その断面形状は、図示例のように矩形である他に、円形や長円形等にすることもできる。
【００２４】
帯状材料部分１６は、図１のナプキン１でコア４に吸収された経血が表面シート２を透して見えることがないように、つまり表面シート２の隠蔽性を高めるように機能すべきものである。そのような帯状材料部分１６には、酸化チタンや硫酸バリウム等の無機質充填剤が添加され、必要に応じて染顔料等が添加されることもある。これらの添加量は、帯状材料部分１６の押出成形に支障を来たさない範囲で多くすることができる。無機質充填剤の添加量が多い場合、幅が狭くて厚さが厚い帯状材料部分１６は、幅が広くて厚さが薄い薄膜状材料部分１７よりも押出成形が容易であり、しかも、帯状材料部分１６は厚さがばらついても表面シート２の性能に与える影響が少ないものであるから、そのような帯状材料部分１６を使用することは表面シート２の隠蔽力を高めることを容易にする。表面シート２を上方から見たときに、帯状材料部分１６の単位面積当たりの無機質充填剤の含有量は、薄膜材料部分１７の含有量よりも高く、好ましくは前者の含有量が後者の含有量の少なくとも１．３倍である。帯状材料部分１６は、薄膜状材料部分１７のＹ方向における引張強度の向上に寄与することもできる。
【００２５】
薄膜状材料部分１７のうちの平坦部分１８は、０．００１〜０．０５ｍｍの厚さと、開孔１９と１９との間に０．３〜５ｍｍの幅Ｗ1とを有する。大多数の開孔１９は、Ｙ方向へ長く延び、好ましくは、０．０３〜５ｍｍの幅Ｗ２と、幅Ｗ２の少なくとも１．５倍の長さとを有する。
【００２６】
薄膜状材料部分１７のうちのブリッジ部分２０は、Ｙ方向へ並ぶ開孔１９と１９との間に位置し、平坦部分１８から上方へ向かって凸となるように弧を画いているもの２０Ａや、平坦部分１８と同様に平坦なもの２０Ｂ（図２参照）がある。弧を画いているブリッジ部分２０Ａは、平坦部分１８から延びているように見える基端部２５Ａを有する場合と、起立部分２２の頂部２７から延びているように見える基端部２５Ｂを有する場合とがある（図２参照）。好ましいブリッジ部分２０は、その厚さが平坦部分１８のそれと同じかまたはそれよりも薄く、Ｙ方向へ延びる幅Ｗ３（図３参照）が、最も狭い部分で０．００１〜２ｍｍの範囲にある。
【００２７】
薄膜状材料部分１７のうちの起立部分２２は、大多数のものが平坦部分１８の縁部２１で薄膜の一部分が図の上方へ延びることにより形成され、平坦部分１８につながる基端部２６と、基端部２６から上方へ延びる自由端部２７とを有する。起立部分２２の上縁２７Ａは、縁部２１に沿って鋸歯状の起伏を繰り返している。平坦部分１８から上縁２７Ａまでの高さの最大値は５ｍｍ程度に達し得るが、表面シート２の肌触りを良好にするためには、その最大値を約１ｍｍに抑えかつ大多数の起立部分２２が帯状材料部分１６の上面から突出するようにすることが好ましい。起立部分２２のうちの一部のもの２２Ｂは、ブリッジ部分２０の縁部に形成されている（図２参照）。
【００２８】
起立部分２２の上縁２７Ａが起伏を繰り返す態様の一例は、図３に示されるとおりであって、ほぼ右上りに延びる斜辺３１と、ほぼ左上りに延びる斜辺３２と、これら斜辺３１，３２間に延びる基端部２６とによって形成される三角形または三角形に類似した形状を呈する部位３３の不規則なつながりである。起立部分２２Ｂもまた、起伏を繰り返すことがある。起立部分２２Ｂを含むこれら起立部分２２は、その厚さが平坦部分１８の厚さと同じであるかまたはそれよりも薄く、人の肌に触れるとしなやかに変形し、表面シート２にベルベットのように滑らかで柔軟な感触を与えることができる。起立部分２２の一つ一つを目視によって確認することは容易ではないが、起立部分２２が多数あると、表面シート２の表面が起毛されたように見える。また、起立部分２２は、表面シート２への入射光線を乱反射して、プラスチックシートによく見られる表面光沢を減殺することができる。
【００２９】
一般に、薄膜状材料部分１７のような薄膜に無機質充填剤を多く添加することは、薄膜の製造を難しくする。それゆえ、この表面シート２では、薄膜状材料部分１７によって汚れたコアに対する高い隠蔽力を得るのではなく、帯状材料部分１６によってその隠蔽力を得て、薄膜状材料部分１７は表面シート２の外観と肌触りとを向上させるように、これら両部分１６，１７が使い分けられている。
【００３０】
不織布層１２は、熱可塑性合成繊維を少なくとも７０重量％含み、その他にレーヨン繊維等の親水性化学繊維、コットン繊維やパルプ繊維等の親水性天然繊維を最大３０重量％含むことができる。好ましい不織布層１２の一例は、０．５５〜１６．５ｄｔｅｘ（０．５〜１５ｄ）の繊度と、５〜５０ｇ／ｍ２の坪量とを有する熱可塑性合成繊維からなるもので、これには、スパンボンド不織布やポイントボンド不織布、エアースルー不織布等のサーマルボンド不織布の他に、メルトブローン不織布、スパンレース不織布等がある。
【００３１】
このような表面シート２が生理用ナプキン１に使用されると、経血は、開孔１９から不織布層１２を経てコア４に吸収される。経血で汚れたコア４や不織布層１２は、隠蔽力の高い帯状材料部分１６や光線を乱反射する起立部分２２等に覆われて、その汚れが目立たない。
【００３２】
【００３３】
図５は、図２の表面シート２として使用される複合シート１０８を連続的に製造する工程を示す図面である。図の左方からは、図２の不織布層１２となるべき繊維集合体である第２ウエブ１０２が連続的に供給される。第２ウエブ１０２の上面１０２Ａには、第１押出機１２１から吐出される第１の熱可塑性プラスチックからなり、表面シート２の薄膜状部分１７となるべき１枚の第１ウエブ１０１が熱で軟化している状態で重ねられて、一対の圧縮ロール１７３間に供給され、両ウエブ１０１，１０２が溶着して第１複合ウエブ１０４となる。
【００３４】
第１複合ウエブ１０４では、第１ウエブ１０１の上に、第２押出し機１２２から吐出される第２の熱可塑性プラスチックからなり、互いに平行で所要寸法離間する複数条の帯１１６である第３ウエブ１０３が熱で軟化している状態で供給され、一対の圧縮ロール１７４間で第１ウエブ１０１と第３ウエブ１０３とが溶着して、第２複合ウエブ１０６が形成される。第３ウエブ１０３の帯１１６は、表面シート２の帯状材料部分１６となるものである。
【００３５】
第２複合ウエブ１０６は第１処理ゾーン１２３へ進み、第２複合ウエブ１０６の幅方向へ所要のピッチで並べられた多数のノズルの列１２３Ａから、高圧柱状水流が第１ウエブ１０１の上面１０１Ａに向かって噴射されて、第３複合ウエブ１０７が得られる。その柱状水流によって帯１１６と１１６との間において第１ウエブ１０１が選択的に破られて、第１ウエブ１０１には第３複合ウエブ１０７の進行方向へ間欠的に並ぶ開孔列が形成され、このような開孔列が第３複合ウエブ１０７の幅方向において互いに平行に並んでいる。第１処理ゾーン１２３では、複数条の開孔列を形成するために、必要ならノズル列１２３Ａに加え、図示のように第２、第３のノズル列１２３Ｂ，１２３Ｃの列からも柱状水流を噴射することができる。これらのノズル列１２３Ａ，１２３Ｂ，１２３Ｃは、第３複合ウエブ１０７の幅方向におけるノズルの位置を互いにほぼ一致させて水流噴射の軌跡が重なり合うようにすることが好ましい。第１処理ゾーン１２３の下部には、噴射された水を吸引するサクション機構１２４が設けられている。
【００３６】
第３複合ウエブ１０７は、第２処理ゾーン１２７へ進む。第２処理ゾーン１２７には、第３複合ウエブ１０７の幅方向へ列をなすノズル列１２７Ａ，１２７Ｂ，１２７Ｃとサクション機構１２８とが設けられている。ここでは、第３複合ウエブ１０７を形成している第２ウエブ１０２の下面１０２Ｂに対して高圧柱状水流が噴射され、その後乾燥処理されて複合シート１０８となる。複合シート１０８では、第１処理ゾーン１２３で既に破られている第１ウエブ１０１の部分が、第２処理ゾーン１２７の柱状水流の向きに倣うように変形して、第１ウエブ１０１の下面１０１Ｂから上面１０１Ａへ向かう方向へ延びている。第２処理ゾーン１２７のノズル列１２７Ａ，１２７Ｂ，１２７Ｃによる噴射水流の軌跡は、第１処理ゾーン１２３のノズル列１２３Ａ，１２３Ｂ，１２３Ｃによる軌跡と必ずしも一致している必要はないが、それらが互いに概ね一致していれば、第１ウエブ１０１が広範囲にわたって破られて長い開孔が形成され、破られた部分の多くが第１ウエブ１０１の上面１０１Ａの上方へ延びるようになる。この発明に係る製造方法によれば、第１ウエブ１０８の幅方向の所要部位が選択的に破られて機械方向へ互いに並行して延びる複数条の開孔列が容易に形成される。
【００３７】
複合シート１０８では、互いに接合する第１、２ウエブ１０１，１０２が表面シート２のプラスチック層１７となり、第１ウエブ１０１に形成された開孔が開孔１９となり、第１ウエブ１０１の破れた部分が起立部分２２となる。第１ウエブ１０１の供給方向へ並ぶ開孔列にあって、開孔部分と開孔部分との間の高圧柱状水流で破られなかった部分は、ブリッジ部分２０となる。
【００３８】
図５において、ノズル列１２３Ａ〜１２３Ｃ，１２７Ａ〜１２７Ｃのノズルの径は０．０５〜０．１５ｍｍ、各ノズル列において隣り合うノズルのピッチは０．１〜０．５ｍｍ、柱状水流の水圧は２９４２〜１９６１４ｋｐｓ（３０〜２００ｋｇ／ｃｍ２）、サクション圧は２００〜１０００ｍｍＨ２Ｏであることが好ましい。第１、２処理ゾーン１２３，１２７では、処理すべきウエブをメッシュスクリーン等の支持体１３１，１３２に載せて所要の方向へ移動させる。
【００３９】
第１ウエブ１０１や第２ウエブ１０２、第３ウエブ１０３が室温で供給されるときには、これらのウエブを加熱された一対のロール間で溶着することによって、またはホットメルト接着剤などで接着することによって接合することができる。
【００４０】
第１ウエブ１０１、第２ウエブ１０２および第３ウエブ１０３には、もし必要であるならば、図示の工程の適宜の位置で撥水処理やその他の表面処理を施すことができる。第１ウエブ１０１は、それが供給方向に沿って一軸延伸されているフィルムであると、柱状水流による開孔の形成が容易になる場合もある。第１ウエブ１０１には厚さ０．００１〜０．０５ｍｍのものが使用され、第３ウエブ１０３には厚さ０．０１〜０．３ｍｍ、幅０．１〜４ｍｍのものが使用される。第２ウエブ１０２には、坪量５〜５０ｇ／ｍ２のものが使用される。図５の工程では、第１処理ゾーン１２３を省いて第２処理ゾーン１２７だけで高圧柱状水流を噴射し、それによって、第２複合ウエブ１０７を作ることなく第１複合ウエブ１０６から複合シート１０８を製造することもできる。ただし、このような製造方法では、柱状水流が第１ウエブ１０１に直接作用し難いから、第１ウエブ１０１には、幅の狭い開孔と多くのブリッジ部分とが生じ易い。複合ウエブ１０８は、それが巻き取られる前に適宜乾燥処理を施される。また、図５の工程では、第２複合ウエブ１０７を図示の工程から取り出して、この複合ウエブ１０７を表面シート２として使用することも可能である。この場合の表面シート２には開孔１９の縁部２１に起立部分２２が殆ど形成されていない。
【００４１】
【００４２】
【発明の効果】
この発明に係る複合シートは、複数条の帯状材料部分と、これに接合する薄膜状材料部分とで形成されているから、この複合シートを使い捨ておむつや生理用ナプキンの表面シートとして使用すると、両部分が重なる部位においてコアの汚れを確実に隠蔽することができる。帯状材料部分は、それが延びる方向における薄膜状材料部分の引張強度の向上にも役立つ。
【００４３】
【図面の簡単な説明】
【図１】 生理用ナプキンの部分破断斜視図。
【図２】 図１の部分拡大図。
【図３】 図２のＩＩＩ−ＩＩＩ線断面図。
【図４】 図２のＩＶ−ＩＶ線断面図。
【図５】 複合シートの製造工程図。
【図６】 従来技術の一例を示す図面。
【図７】 従来技術の他の一例を示す生理用ナプキンの斜視図。
【符号の説明】
１ 体液吸収性物品（生理用ナプキン）
２ 複合シート（表面シート）
１１ プラスチックシート層
１２ 繊維集合層
１６ 帯状材料部分
１７ 薄膜状材料部分
１９ 開孔
２２ 起立部分
１０１ 薄膜（第１ウエブ）
１０２ 繊維ウエブ（第２ウエブ）
１０３ 帯（第３ウエブ）
１０８ 複合ウエブ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid-permeable composite sheet suitable for use in disposable body fluid absorbent articles such as disposable diapers and sanitary napkins.
[0002]
[Prior art]
FIG. 6 is a perspective view of the micro-opening plastic sheet 110 having a soft feel as disclosed in Japanese Patent Laid-Open No. 62-57551. This plastic sheet is suitable for use as a surface sheet of a disposable diaper. A large number of cylindrical protrusions 120 are formed on the surface of the sheet 110, and a minute opening 125 is formed on the top of the protrusion 120. ing. Such a sheet 110 is described as being flexible and exhibiting a cloth-like feel.
[0003]
FIG. 7 is a perspective view of a sanitary napkin 200 disclosed in Japanese Patent Laid-Open No. 7-328061. The surface sheet 210 of the napkin 200 includes a nonwoven fabric 211 and a plurality of strip-shaped plastic sheets 212 joined to the upper surface of the nonwoven fabric 211. The strip-shaped plastic sheets 212 are parallel to each other and extend in the longitudinal direction of the napkin 200. ing. In the napkin 200, dirt due to menstrual blood can be concealed by the presence of the plastic sheet 212.
[0004]
[Problems to be solved by the invention]
One method of using the known micro-opened plastic sheet 110 as a sanitary napkin surface sheet to conceal dirt due to menstrual blood in the absorbent core located below the surface sheet is as follows. Filling with inorganic particles such as calcium and barium sulfate. Moreover, what is necessary is just to increase the filling amount of the particle | grains, in order to raise concealment power. However, if only the filling amount is increased, the strength of the sheet will decrease, or the thickness fluctuation width at the time of manufacturing the sheet will increase, so the problem will be solved by increasing the thickness of the sheet used. Must. However, by doing so, the sheet becomes highly rigid and loses the cloth-like feeling, and the cylindrical protrusion 120 may also be poor in flexibility.
[0005]
The Japanese Patent Laid-Open No. 7-328061 teaches that the hiding power can be improved by adopting the belt-like plastic sheet 212 for the surface sheet 210 made of a relatively flat sheet such as a nonwoven fabric. For the plastic sheet having the cylindrical protrusion 120, it does not teach how to use the belt-shaped plastic sheet.
[0006]
This invention makes it a subject to provide a soft touch and high hiding power to a liquid-permeable sheet used for, for example, a surface material of a disposable body fluid absorbent article with reference to these prior arts. .
[0007]
[Means for Solving the Problems]
[0008]
In order to solve the above problems, the present invention is directed to a disposable body fluid-absorbing article having a plastic sheet layer on the upper surface side and a fiber assembly layer bonded to the plastic sheet layer on the lower surface side. It is a liquid-permeable composite sheet used for the above.
[0009]
In such a composite sheet, the invention is characterized in that the plastic sheet layer has a plurality of strip-shaped material portions extending in parallel and spaced apart from each other in one direction, and is substantially bonded to the strip-shaped material portion. consists of a total of not covering the strip material portion thin film material portion is thin than the set layer top surface, the said thin film material portion, while joining said material web portion on its upper surface, a lower surface side A plurality of liquid- permeable apertures are formed along the edge of the apertures , and the fiber assembly layers are joined to each other and the strip-shaped material portions adjacent to each other are intermittently arranged in the one direction. An upright portion extending upward from the upper surface of the composite sheet is formed while repeating undulations .
[0010]
The present invention has the following preferred embodiments.
[0011]
[0012]
[0013]
[0014]
A mode in which the plastic sheet layer contains an inorganic filler, and the content of the filler per unit area in the strip-shaped material portion is higher than that in the thin-film material portion.
[0015]
[0016]
[0017]
DETAILED DESCRIPTION OF THE INVENTION
The details of the liquid-permeable composite sheet used in the disposable body fluid-absorbing article and the method for producing the same will be described with reference to the accompanying drawings.
[0018]
FIG. 1 is a partially broken perspective view of a sanitary napkin 1 which is an example of a disposable body fluid absorbent article. The napkin 1 includes a liquid-permeable top sheet 2, a liquid-impervious back sheet 3, and a liquid-absorbent core 4 interposed between the two sheets 2 and 3. In the line 6, they are overlapped at the part extending from the peripheral edge of each other and joined together by welding or adhesion. The napkin 1 has a width extending in the X direction and a length extending in the Y direction. In such a napkin 1, the composite sheet according to the present invention is used as the top sheet 2.
[0019]
2, 3, and 4 are a partially enlarged view of the napkin 1 and sectional views taken along lines III-III and IV-IV, respectively. However, the back sheet 3 and the core 4 are indicated by virtual lines. The top sheet 2 is a composite sheet composed of a plastic sheet layer 11 located on the upper surface side thereof and a nonwoven fabric layer 12 that is an aggregate of fibers 13, and these layers 11 and 12 are bonded to each other by welding or adhesion. is doing. The plastic sheet layer 11 includes a plurality of strip-shaped material portions 16 extending in the Y direction in parallel to each other, and a thin-film material portion 17 that is below the strip-shaped material portion 16 and covers substantially the entire upper surface of the nonwoven fabric layer 12. These two parts 16 and 17 are made of thermoplastics and are welded to each other at the overlapping parts. The thin film material portion 17 includes a plurality of substantially flat portions 18 extending in the Y direction in parallel to each other and a plurality of apertures 19 extending between the adjacent flat portions 18 and extending in the Y direction. A bridge portion 20 extending in the X direction from the opposite edge portions 21 in the adjacent flat portions 18 and crossing the opening 19, and a standing portion 22 extending upward in the figure at the edge 21 of the flat portion 18. The standing portion 22 is a portion having a generally sawtooth shape extending in the Y direction while repeating irregular undulations.
[0020]
The nonwoven fabric layer 12 is joined to the flat portion 18 of the thin film material portion 17 from below in the figure, and a part of the nonwoven fabric layer 12 is exposed in the opening 19.
[0021]
As the back sheet 3, a thermoplastic sheet, a nonwoven fabric made of thermoplastic synthetic fibers, a laminate of these sheets and the nonwoven fabric, or the like is used.
[0022]
For the core 4, pulverized pulp, a mixture of pulverized pulp and a superabsorbent polymer, or the like is used.
[0023]
3 and 4, the band-shaped material portion 16 is provided on the flat portion 18 of the thin-film material portion 17, preferably on each of the flat portions 18, and has a thickness of 0.01 to 0.3 mm and 0. And a width S1 of 1 to 4 mm. When the thickness is less than 0.01 mm, the effect of enhancing the concealability of the thin film material portion 17 is poor, and when the thickness exceeds 0.3 mm, the rigidity becomes high and the skin irritation becomes too strong. There is. The width S 1 is approximately the same as that of the flat portion 18 or smaller. However, the width S 1 is preferably not less than 1/3 of the width W 1 of the flat portion 18 in order to improve the concealability in the flat portion 18, and should not be less than 1/2. More preferably. Such a strip-shaped material portion 16 is obtained by extruding a thermoplastic plastic into a strip shape and supplying it onto the thin-film-shaped material portion 17. Or an oval shape.
[0024]
The band-shaped material portion 16 should function so that menstrual blood absorbed in the core 4 by the napkin 1 in FIG. 1 does not appear through the top sheet 2, that is, to improve the concealing property of the top sheet 2. is there. An inorganic filler such as titanium oxide or barium sulfate is added to such a band-shaped material portion 16, and a dye or pigment may be added as necessary. These addition amounts can be increased within a range that does not hinder the extrusion of the band-shaped material portion 16. When the amount of the inorganic filler added is large, the strip-shaped material portion 16 having a narrow width and a large thickness is easier to extrude than the thin film-shaped material portion 17 having a large width and a small thickness, and the strip-shaped material portion. Since the portion 16 has little influence on the performance of the topsheet 2 even if the thickness varies, the use of such a strip-like material portion 16 makes it easy to increase the hiding power of the topsheet 2. When the topsheet 2 is viewed from above, the content of the inorganic filler per unit area of the strip-shaped material portion 16 is higher than the content of the thin film material portion 17, and preferably the former content is the latter content. Is at least 1.3 times greater. The strip-shaped material portion 16 can also contribute to the improvement of the tensile strength in the Y direction of the thin-film material portion 17.
[0025]
The flat portion 18 of the thin film material portion 17 has a thickness of 0.001 to 0.05 mm and a width W 1 of 0.3 to 5 mm between the openings 19 and 19. The majority of opening 19 extends long in the Y direction, preferably has a width W 2 of 0.03～5Mm, a length of at least 1.5 times the width W 2.
[0026]
The bridge portion 20 of the thin film material portion 17 is located between the openings 19 and 19 aligned in the Y direction, and has an arc 20A that protrudes upward from the flat portion 18. As with the flat portion 18, there is a flat portion 20B (see FIG. 2). The arcuate bridge portion 20A has a proximal end 25A that appears to extend from the flat portion 18 and a proximal end 25B that appears to extend from the top 27 of the raised portion 22. (See Fig. 2). The preferred bridge portion 20 has a thickness equal to or less than that of the flat portion 18 and has a width W 3 extending in the Y direction (see FIG. 3) in the range of 0.001 to 2 mm at the narrowest portion. .
[0027]
Raised portions 22 of the thin film material portion 17, a portion of the thin film at the edge 21 of the majority of those flat portions 18 is formed by extending upward in the drawing, the base end portion 26 connected to the flat portion 18 And a free end portion 27 extending upward from the base end portion 26. The upper edge 27 </ b> A of the upright portion 22 repeats serrated undulations along the edge 21. The maximum value of the height from the flat portion 18 to the upper edge 27A can reach about 5 mm. However, in order to improve the touch of the topsheet 2, the maximum value is suppressed to about 1 mm and the majority of the standing portions 22. Preferably protrudes from the upper surface of the strip-shaped material portion 16. A part 22B of the standing part 22 is formed at the edge of the bridge part 20 (see FIG. 2).
[0028]
An example of a mode in which the upper edge 27A of the upright portion 22 repeats undulations is as shown in FIG. 3, and includes a hypotenuse 31 that extends substantially to the upper right, a hypotenuse 32 that extends substantially to the left, and between these hypotenuses 31 and 32. This is an irregular connection of a portion 33 having a triangle or a shape similar to a triangle formed by the base end portion 26 extending in the direction. The standing portion 22B may also repeat undulations. The upright portions 22 including the upright portions 22B have the same thickness as the flat portion 18 or thinner than the flat portions 18, and are deformed flexibly when touched by human skin, like the velvet on the top sheet 2. A smooth and flexible feel can be given. Although it is not easy to visually check each of the raised portions 22, when there are a large number of raised portions 22, the surface of the topsheet 2 appears to be raised. Further, the standing portion 22 can diffusely reflect the incident light beam on the top sheet 2 to reduce the surface gloss often seen in the plastic sheet.
[0029]
Generally, adding a large amount of an inorganic filler to a thin film such as the thin film material portion 17 makes it difficult to manufacture the thin film. Therefore, the surface sheet 2 does not obtain a high hiding power with respect to the soiled core by the thin film material portion 17, but obtains the hiding power by the band material portion 16, so that the thin film material portion 17 These two parts 16 and 17 are properly used so as to improve the appearance and the touch.
[0030]
The nonwoven fabric layer 12 may contain at least 70% by weight of thermoplastic synthetic fiber, and may further contain up to 30% by weight of hydrophilic chemical fiber such as rayon fiber, and hydrophilic natural fiber such as cotton fiber and pulp fiber. An example of a preferable nonwoven fabric layer 12 is made of a thermoplastic synthetic fiber having a fineness of 0.55 to 16.5 dtex (0.5 to 15 d) and a basis weight of 5 to 50 g / m 2. In addition to thermal bond nonwoven fabrics such as spunbond nonwoven fabrics, point bond nonwoven fabrics, and air-through nonwoven fabrics, there are melt blown nonwoven fabrics and spunlace nonwoven fabrics.
[0031]
When such a surface sheet 2 is used for the sanitary napkin 1, menstrual blood is absorbed into the core 4 through the non-woven fabric layer 12 from the opening 19. The core 4 and the nonwoven fabric layer 12 soiled by menstrual blood are covered with the band-shaped material portion 16 having high concealing power, the standing portion 22 that irregularly reflects light rays, etc., and the stain is not conspicuous.
[0032]
[0033]
FIG. 5 is a drawing showing steps for continuously producing the composite sheet 108 used as the top sheet 2 of FIG. From the left side of the figure, the second web 102 which is a fiber assembly to be the nonwoven fabric layer 12 of FIG. 2 is continuously supplied. The upper surface 102A of the second web 102 is made of the first thermoplastic plastic discharged from the first extruder 121, and the one first web 101 to be the thin film portion 17 of the top sheet 2 is softened by heat. In this state, the two webs 101 and 102 are welded together to form the first composite web 104.
[0034]
In the first composite web 104, the third web is a plurality of strips 116 made of the second thermoplastic plastic discharged from the second extruder 122 on the first web 101 and parallel to each other and spaced apart from each other by a predetermined dimension. The first web 101 and the third web 103 are welded between the pair of compression rolls 174 to form the second composite web 106. The band 116 of the third web 103 becomes the band-shaped material portion 16 of the top sheet 2.
[0035]
The second composite web 106 proceeds to the first processing zone 123, and a high-pressure columnar water stream is applied to the upper surface 101 A of the first web 101 from a plurality of nozzle rows 123 A arranged at a required pitch in the width direction of the second composite web 106. The third composite web 107 is obtained by being jetted toward the vehicle. The first web 101 is selectively broken between the belts 116 and 116 by the columnar water flow, and the first web 101 is formed with a row of apertures arranged intermittently in the traveling direction of the third composite web 107, Such aperture rows are arranged in parallel to each other in the width direction of the third composite web 107. In the first treatment zone 123, in order to form a plurality of aperture rows, columnar water flows are ejected from the rows of the second and third nozzle rows 123B and 123C as shown in addition to the nozzle row 123A if necessary. can do. In these nozzle rows 123A, 123B, and 123C, it is preferable that the nozzle positions in the width direction of the third composite web 107 are substantially matched with each other so that the trajectories of water flow overlap. A suction mechanism 124 that sucks the jetted water is provided below the first treatment zone 123.
[0036]
The third composite web 107 proceeds to the second processing zone 127. In the second processing zone 127, nozzle rows 127A, 127B, 127C and a suction mechanism 128 that form a row in the width direction of the third composite web 107 are provided. Here, a high-pressure columnar water stream is jetted onto the lower surface 102B of the second web 102 forming the third composite web 107, and then dried to form a composite sheet 108. In the composite sheet 108, the portion of the first web 101 that has already been broken in the first processing zone 123 is deformed so as to follow the direction of the columnar water flow in the second processing zone 127, and from the lower surface 101B of the first web 101. It extends in the direction toward the upper surface 101A. The trajectory of the jet water flow by the nozzle rows 127A, 127B, and 127C in the second processing zone 127 does not necessarily need to coincide with the trajectory by the nozzle rows 123A, 123B, and 123C in the first processing zone 123. If they match, the first web 101 is broken over a wide range to form a long opening, and many of the broken portions extend above the upper surface 101A of the first web 101. According to the manufacturing method according to the present invention, a required portion in the width direction of the first web 108 is selectively broken, and a plurality of aperture rows extending in parallel to each other in the machine direction are easily formed.
[0037]
In the composite sheet 108, the first and second webs 101 and 102 to be bonded to each other become the plastic layer 17 of the top sheet 2, and the opening formed in the first web 101 becomes the opening 19, and the torn portion of the first web 101 Becomes the upright portion 22. A portion of the opening row arranged in the supply direction of the first web 101 and not broken by the high-pressure columnar water flow between the opening portion and the opening portion becomes a bridge portion 20.
[0038]
In FIG. 5 , the nozzle diameters of the nozzle rows 123A to 123C and 127A to 127C are 0.05 to 0.15 mm, the pitch between adjacent nozzles in each nozzle row is 0.1 to 0.5 mm, and the water pressure of the columnar water flow is 2942. -19614 kps (30-200 kg / cm 2 ), and the suction pressure is preferably 200-1000 mmH 2 O. In the first and second processing zones 123 and 127, the web to be processed is placed on supports 131 and 132 such as a mesh screen and moved in a required direction.
[0039]
When the first web 101, the second web 102, and the third web 103 are supplied at room temperature, these webs are welded between a pair of heated rolls, or bonded with a hot melt adhesive or the like. Can be joined.
[0040]
If necessary, the first web 101, the second web 102, and the third web 103 can be subjected to water repellent treatment or other surface treatment at an appropriate position in the illustrated process. If the first web 101 is a film that is uniaxially stretched along the supply direction, it may be easy to form an opening by a columnar water flow. The first web 101 has a thickness of 0.001 to 0.05 mm, and the third web 103 has a thickness of 0.01 to 0.3 mm and a width of 0.1 to 4 mm. As the second web 102, one having a basis weight of 5 to 50 g / m 2 is used. In the process of FIG. 5 , the first treatment zone 123 is omitted, and the high pressure columnar water stream is jetted only in the second treatment zone 127, thereby removing the composite sheet 108 from the first composite web 106 without forming the second composite web 107. It can also be manufactured. However, in such a manufacturing method, since the columnar water flow hardly acts directly on the first web 101, the first web 101 is likely to have narrow openings and many bridge portions. The composite web 108 is appropriately dried before it is wound up. Further, in the process of FIG. 5 , the second composite web 107 can be taken out from the illustrated process and used as the top sheet 2. In this case, the surface sheet 2 has almost no standing portion 22 at the edge 21 of the opening 19.
[0041]
[0042]
【The invention's effect】
Since the composite sheet according to the present invention is formed of a plurality of strip-shaped material portions and a thin film-shaped material portion to be joined thereto, when the composite sheet is used as a top sheet of a disposable diaper or a sanitary napkin, The dirt on the core can be reliably concealed at the part where the parts overlap. The strip-shaped material portion also helps to improve the tensile strength of the thin-film material portion in the direction in which it extends.
[0043]
[Brief description of the drawings]
FIG. 1 is a partially cutaway perspective view of a sanitary napkin.
FIG. 2 is a partially enlarged view of FIG.
3 is a cross-sectional view taken along line III-III in FIG.
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is a manufacturing process diagram of a composite sheet.
FIG. 6 is a diagram showing an example of a conventional technique.
FIG. 7 is a perspective view of a sanitary napkin showing another example of the prior art.
[Explanation of symbols]
1 Body fluid absorbent article (Sanitary napkin)
2 Composite sheet (surface sheet)
DESCRIPTION OF SYMBOLS 11 Plastic sheet layer 12 Fiber assembly layer 16 Band-shaped material part 17 Thin film-like material part 19 Opening 22 Standing part 101 Thin film (1st web)
102 Fiber web (second web)
103 belt (3rd web)
108 Compound web

Claims (2)

上面側にプラスチックシート層を有し、下面側に前記プラスチックシート層と接合している繊維集合層を有し、使い捨ての体液吸収性物品に使用される透液性複合シートであって、
前記プラスチックシート層が、一方向へ互いに離間平行して延びる複数条の帯状材料部分と、前記帯状材料部分に接合して実質的に前記繊維集合層上面の全体を覆い前記帯状材料部分よりも厚さが薄い薄膜状材料部分とからなり、前記薄膜状材料部分には、その上面側に前記帯状材料部分が接合する一方、その下面側に前記繊維集合層が接合し、かつ、隣り合う前記帯状材料部分どうしの間において前記一方向へ間欠的に並ぶ多数の透液性開孔が形成されているとともに前記開孔の縁に沿って起伏を繰り返しながら前記複合シートの上面上方へ延びる起立部分が形成されていることを特徴とする前記複合シート。It has a plastic sheet layer on the upper surface side and a fiber assembly layer bonded to the plastic sheet layer on the lower surface side, and is a liquid-permeable composite sheet used for disposable body fluid absorbent articles,
The plastic sheet layer is a strip material portion of the plural rows extending in spaced apart parallel to one direction, than the whole not covering the strip material portion of substantially the fiber assembly layer top surface joined to the strip material portion A thin- film material portion having a small thickness, and the thin- film material portion is bonded to the upper surface side of the band-shaped material portion, the lower surface side of which the fiber assembly layer is bonded, and the adjacent A plurality of liquid-permeable apertures that are intermittently arranged in the one direction between the strip-shaped material portions, and an upright portion that extends above the upper surface of the composite sheet while repeating undulations along the edges of the apertures The composite sheet is characterized in that is formed . 前記プラスチックシート層が無機質充填剤を含有し、前記帯状材料部分における単位面積当たりの前記充填剤の含有量が、前記薄膜状材料部分におけるそれよりも高い請求項１記載の複合シート。The composite sheet according to claim 1, wherein the plastic sheet layer contains an inorganic filler, and the content of the filler per unit area in the strip-shaped material portion is higher than that in the thin-film material portion.
JP37296099A 1999-12-28 1999-12-28 Liquid-permeable composite sheet for disposable body fluid absorbent articles Expired - Fee Related JP3877923B2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP37296099A JP3877923B2 (en) 1999-12-28 1999-12-28 Liquid-permeable composite sheet for disposable body fluid absorbent articles
TW089127272A TW523403B (en) 1999-12-28 2000-12-19 Liquid permeable composite sheet for disposable humor absorptive article and method for manufacturing the same
KR1020000079635A KR100707154B1 (en) 1999-12-28 2000-12-21 Liquid permeable composite sheet for disposable body fluid absorbable article and method thereof
SG200007631A SG86454A1 (en) 1999-12-28 2000-12-22 Liquid-previous composite sheet for disposable body fluid absorbent sanitary article and process for making the same
IDP20001139D ID28738A (en) 1999-12-28 2000-12-22 COMPOSITE SHEETS WHICH CAN BE SHOULD BE LIMITED FOR HEALTH OBJECTIVES OF THE BODY LIQUID ABSORER AND THE PROCESS OF MAKING IT
MYPI20006139A MY120867A (en) 1999-12-28 2000-12-22 Liquid-pervious composite sheet for disposable body fluid absorbent sanitary article and process for making the same
CNB001375547A CN1204866C (en) 1999-12-28 2000-12-28 Liquid permeating composite sheet of disposable liquid absorption article and its producing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP37296099A JP3877923B2 (en) 1999-12-28 1999-12-28 Liquid-permeable composite sheet for disposable body fluid absorbent articles

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2005143222A Division JP4188943B2 (en) 2005-05-16 2005-05-16 Method for producing liquid-permeable composite sheet for disposable body fluid absorbent article

Publications (2)

Publication Number Publication Date
JP2001187087A JP2001187087A (en) 2001-07-10
JP3877923B2 true JP3877923B2 (en) 2007-02-07

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JP (1) JP3877923B2 (en)
KR (1) KR100707154B1 (en)
CN (1) CN1204866C (en)
ID (1) ID28738A (en)
MY (1) MY120867A (en)
SG (1) SG86454A1 (en)
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Publication number Priority date Publication date Assignee Title
JP4146192B2 (en) * 2001-09-11 2008-09-03 ユニ・チャーム株式会社 Absorbent articles
EP2604238A3 (en) * 2003-08-07 2015-09-02 The Procter & Gamble Company Apertured film and method for making it
JP2005296480A (en) * 2004-04-15 2005-10-27 Uni Charm Corp Sanitary napkin
JP4560415B2 (en) 2005-01-20 2010-10-13 ユニ・チャーム株式会社 Absorbent articles

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* Cited by examiner, † Cited by third party
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US4629643A (en) * 1985-05-31 1986-12-16 The Procter & Gamble Company Microapertured polymeric web exhibiting soft and silky tactile impression
CA2136675C (en) * 1993-12-17 2005-02-15 Kimberly-Clark Worldwide, Inc. Liquid permeable, quilted film laminates
JP3091361B2 (en) * 1994-06-07 2000-09-25 ユニ・チャーム株式会社 Disposable body fluid absorbent articles
JP3058572B2 (en) * 1994-12-13 2000-07-04 ユニ・チャーム株式会社 Body fluid absorbent articles
JP3628883B2 (en) * 1997-11-26 2005-03-16 ユニ・チャーム株式会社 Flexible sheet used for disposable wearing article and method for producing the same

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ID28738A (en) 2001-06-28
CN1204866C (en) 2005-06-08
MY120867A (en) 2005-11-30
SG86454A1 (en) 2002-02-19
KR20010062579A (en) 2001-07-07
TW523403B (en) 2003-03-11
KR100707154B1 (en) 2007-04-16
CN1301530A (en) 2001-07-04

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