JP6203907B1 - 吸収性物品 - Google Patents
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- 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
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Abstract
Description
前記透液性表面シートは、肌側に配置された親水性を有する上層不織布と、非肌側に配置された撥水性を有する下層不織布とからなり、前記上層不織布及び下層不織布を貫通する多数の開孔が形成され、
前記上層不織布は少なくとも肌側面が親水性を有するようになっており、前記下層不織布は少なくとも非肌側面が撥水性を有するようになっていることを特徴とする吸収性物品が提供される。
本発明に係る生理用ナプキン1は、図1及び図2に示されるように、ポリエチレンシートなどからなる不透液性裏面シート2と、経血やおりものなど(以下、まとめて体液ともいう。)を速やかに透過させる透液性表面シート3と、これら両シート2,3間に介装された綿状パルプまたは合成パルプなどからなる吸収体4と、前記透液性表面シート3の非肌側に隣接して配置された親水性の不織布などからなるセカンドシート6と、肌当接面側の両側部に長手方向に沿ってほぼ全長に亘って設けられたサイド不織布7とを備え、かつ前記吸収体4の周囲においては、その上下端縁部では前記不透液性裏面シート2と透液性表面シート3との外縁部がホットメルトなどの接着剤やヒートシール、超音波シール等の接合手段によって接合され、またその両側縁部では吸収体4よりも側方に延出している前記不透液性裏面シート2と前記サイド不織布7との外縁部がホットメルトなどの接着剤やヒートシール、超音波シール等の接合手段によって接合されることにより、吸収体が介在しないフラップ部が形成されたものである。なお、図示例では、前記吸収体4の形状保持および拡散性向上のために、前記吸収体4をクレープ紙又は不織布などからなる被包シート5で囲繞しているが、この被包シート5は設けなくてもよい。
前記不透液性裏面シート2は、ポリエチレン等の少なくとも遮水性を有するシート材が用いられるが、蒸れ防止の観点から透湿性を有するものを用いるのが望ましい。この遮水・透湿性シート材としては、ポリエチレンやポリプロピレン等のオレフィン系樹脂中に無機充填剤を溶融混練してシートを成形した後、一軸または二軸方向に延伸することにより得られる微多孔性シートが好適に用いられる。前記不透液性裏面シート2の非肌側面(外面)にはナプキン長手方向に沿って1または複数条の粘着剤層(図示せず)が形成され、身体への装着時に生理用ナプキン1を下着に固定するようになっている。前記不透液性裏面シート2としては、プラスチックフィルムと不織布とを積層させたポリラミ不織布を用いてもよい。
次に、前記透液性表面シート3について詳細に説明する。前記透液性表面シート3は、詳細には図4及び図5に示されるように、肌側に配置された親水性を有する上層不織布20と、非肌側に配置された撥水性を有する下層不織布21とからなる2層構造とされ、前記上層不織布20及び下層不織布21を貫通する多数の開孔22、22…が形成されている。不織布を構成する素材繊維としては、ポリエチレンまたはポリプロピレン等のオレフィン系、ポリエステル系、ポリアミド系等の合成繊維の他、レーヨンやキュプラ等の再生繊維、綿等の天然繊維とすることができ、エアスルー法、スパンレース法、スパンボンド法、サーマルボンド法、メルトブローン法、ニードルパンチ法等の適宜の加工法によって得られた不織布を用いることができる。これらの加工法の内、エアスルー法によって製造された不織布は、繊維間の空間が大きくふんわりとした感触を有し、嵩高でバルキーとなっているため、装着感が良く、繊維間を通って体液が浸透しやすくなるので好ましい。不織布の繊維は、長繊維または短繊維のいずれでもよいが、好ましくはタオル地の風合いを出すため短繊維を使用するのがよい。また、エンボス処理を容易とするために、比較的低融点のポリエチレンまたはポリプロピレン等のオレフィン系繊維のものを用いるのがよい。また、融点の高い繊維を芯とし融点の低い繊維を鞘とした芯鞘型繊維やサイド−バイ−サイド型繊維、分割型繊維の複合繊維を好適に用いることもできる。
次いで、前記透液性表面シート3の非肌側に隣接して配置される親水性のセカンドシート6について説明する。前記セカンドシート6は、体液に対して親水性を有するものであればよい。具体的には、レーヨンやキュプラ等の再生繊維、綿等の天然繊維を用いることにより素材自体に親水性を有するものを用いるか、ポリエチレンまたはポリプロピレン等のオレフィン系、ポリエステル系、ポリアミド系等の合成繊維を親水化剤によって表面処理し親水性を付与した繊維を用いることができる。
比較例1と実施例1、比較例2と実施例2をそれぞれ比較すると、いずれも下層不織布を撥水性にした方が逆戻り量が低減する。つまり、透液性表面シート3の上層は体液が吸収しやすいように親水性とし、下層は一旦吸収した体液が逆戻りしないように撥水性とすることで、逆戻り量が低減できることが実証できた。
Claims (5)
- 透液性表面シートと不透液性裏面シートとの間に吸収体が介在された吸収性物品において、
前記透液性表面シートは、肌側に配置された親水性を有する上層不織布と、非肌側に配置された撥水性を有する下層不織布とからなり、前記上層不織布及び下層不織布を貫通する多数の開孔が形成され、
前記上層不織布は少なくとも肌側面が親水性を有するようになっており、前記下層不織布は少なくとも非肌側面が撥水性を有するようになっていることを特徴とする吸収性物品。 - 前記下層不織布の繊度は、前記上層不織布の繊度より低く設定されている請求項1記載の吸収性物品。
- 前記開孔の開孔率は10〜25%である請求項1、2いずれかに記載の吸収性物品。
- 前記開孔の大きさは0.3〜4.0mmである請求項1〜3いずれかに記載の吸収性物品。
- 前記透液性表面シートの非肌側に隣接して親水性のセカンドシートが配設され、前記セカンドシートの繊度は、前記透液性表面シートの繊度より高く設定されている請求項1〜4いずれかに記載の吸収性物品。
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JP2016118276A JP6203907B1 (ja) | 2016-06-14 | 2016-06-14 | 吸収性物品 |
US16/301,896 US11266547B2 (en) | 2016-06-14 | 2017-06-12 | Absorbent article |
PCT/JP2017/021590 WO2017217354A1 (ja) | 2016-06-14 | 2017-06-12 | 吸収性物品 |
CN201780031249.0A CN109152679B (zh) | 2016-06-14 | 2017-06-12 | 吸收性物品 |
EP17813250.2A EP3470034B1 (en) | 2016-06-14 | 2017-06-12 | Absorbent article |
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JP2016118276A JP6203907B1 (ja) | 2016-06-14 | 2016-06-14 | 吸収性物品 |
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US (1) | US11266547B2 (ja) |
EP (1) | EP3470034B1 (ja) |
JP (1) | JP6203907B1 (ja) |
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WO (1) | WO2017217354A1 (ja) |
Cited By (1)
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CN115517861A (zh) * | 2022-08-30 | 2022-12-27 | 美佳爽(中国)有限公司 | 一种速吸干爽吸收芯体 |
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EP3216434A1 (en) * | 2016-03-08 | 2017-09-13 | The Procter and Gamble Company | Absorbent article comprising a topsheet/acquisition web laminate |
JP6445732B1 (ja) * | 2018-09-10 | 2018-12-26 | ユニ・チャーム株式会社 | 吸収性物品 |
JP6983133B2 (ja) * | 2018-09-28 | 2021-12-17 | ユニ・チャーム株式会社 | 吸収性物品 |
CN109700604A (zh) * | 2019-02-22 | 2019-05-03 | 山东爱舒乐卫生用品有限责任公司 | 一种超吸收、舒爽性、消臭的成人纸尿裤 |
JP7370151B2 (ja) * | 2019-03-27 | 2023-10-27 | 大王製紙株式会社 | 使い捨ておむつ |
CN110179594A (zh) * | 2019-05-31 | 2019-08-30 | 重庆百亚卫生用品股份有限公司 | 一种吸收型芯体结构 |
JP2020202910A (ja) * | 2019-06-14 | 2020-12-24 | 日本製紙クレシア株式会社 | 吸収性物品 |
CN112869955A (zh) * | 2019-11-30 | 2021-06-01 | 尤尼吉可株式会社 | 卫生巾、一次性尿布等吸液性物品 |
CN112545764B (zh) * | 2020-12-19 | 2022-04-12 | 福建中润纸业有限公司 | 一种纸尿裤及其生产工艺 |
TWI758142B (zh) * | 2021-03-11 | 2022-03-11 | 臺灣塑膠工業股份有限公司 | 聚丙烯複合膜、包含彼之衛生用品及其製造方法 |
CN115961426B (zh) * | 2022-12-24 | 2024-10-15 | 杭州明日软包装有限公司 | 一种高效渗透打孔无纺布及其制备方法 |
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US11266547B2 (en) | 2022-03-08 |
CN109152679B (zh) | 2021-08-17 |
US20190183693A1 (en) | 2019-06-20 |
JP2017221341A (ja) | 2017-12-21 |
WO2017217354A1 (ja) | 2017-12-21 |
EP3470034B1 (en) | 2020-11-18 |
CN109152679A (zh) | 2019-01-04 |
EP3470034A1 (en) | 2019-04-17 |
EP3470034A4 (en) | 2019-04-17 |
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