JP2015516269A - 吸収性物品のための積層体の製造方法 - Google Patents
吸収性物品のための積層体の製造方法 Download PDFInfo
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- JP2015516269A JP2015516269A JP2015512738A JP2015512738A JP2015516269A JP 2015516269 A JP2015516269 A JP 2015516269A JP 2015512738 A JP2015512738 A JP 2015512738A JP 2015512738 A JP2015512738 A JP 2015512738A JP 2015516269 A JP2015516269 A JP 2015516269A
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Abstract
Description
「吸収性物品(1つ以上)」は、本明細書では、その主な機能が汚れ及び***物を吸収し保持することである、消費者製品を指すのに使用される。吸収性物品は、パンツ型及び/又はテープ式おむつを指してもよい。用語「おむつ」及び「パンツ」は、本明細書では、一般に、乳児、小児、及び失禁症状のある人によって下部胴体の周りに着用される吸収性物品を指すのに使用される。用語「使い捨て」は、本明細書では、洗濯又は別の方法で吸収性物品として復元若しくは再使用することを一般に意図しない吸収性物品を説明するのに使用される(例えば、それらの物品は、1回の使用後に廃棄することが意図され、またリサイクルするか、堆肥化するか、又は別の方法として環境に適応した形で処分するように構成されても良い)。
寸法測定は、反射モードにおいて少なくとも2400dpiの解像度でスキャン可能なフラットベッドスキャナーを使用して生成された画像上で実施する(好適なスキャナーは、米国のエプソン(Epson, USA)製のEpson Perfection V750 Proである)。解析は、ImageJソフトウェア(アメリカ国立衛生研究所(National Institutes of Health, USA))、又は等価の画像解析ソフトウェアを使用して実施し、認証済みのNISTルーラーに対して較正する。サンプルは、試験前に、約23℃±2℃及び相対湿度約50%±2%で2時間にわたって事前に調湿する。
ベルト部分の基材の損傷を回避するため、凍結スプレー又は好適な方法を使用して、ベルト部分を吸収性物品から除去する。吸収性物品がパンツである場合、シーム範囲の長手方向軸線に沿ってベルトを切断して、ベルトを前側及び後側ベルト部分に分離し、各ベルト部分を水平ベンチ上に平らに置く。各ベルト部分に対して、次のステップを実行する:
切断したベルト部分を、切断したベルト部分の1つの縁部に沿ってテープでベンチに固定する。選択された縁部は、しわの最長寸法に対して直交又は横断する方向で延在していなければならない。
しわ長さ(mm)及びしわ振幅の測定値を、画像解析を含む光学顕微鏡検査によって得る。好適な計器は、OL−35アダプタ及びMXG 10−Cレンズを取り付けたHIROXマイクロスコープ(モデルKH7700)、又は等価物である。外部白色光源を使用する。画像は、HIROXソフトウェア(バージョン2.10C)又は等価の3D画像解析ソフトウェアを用いて獲得し解析する。サンプルは、試験前に、23℃±2℃及び相対湿度50%±2%で2時間にわたって事前に調湿する。
しわ長さ、しわ出現率、しわ振幅、弾性要素間隔、及びテクスチャー比の方法を使用して、以下の表1に示されるように、比較用の吸収性物品及び本開示の吸収性物品の様々なテクスチャー区域について試験した。広くは、比較用の吸収性物品は、前側及び後側に均一なテクスチャーを有していた。いくつかの比較用の吸収性物品では、前側を使用し、他の比較用の吸収性物品では、後側を使用した。前側/後側を使用した場合、その特定の比較用の吸収性物品の試験全体に対して使用した。
Claims (15)
- 吸収性物品の一部分を形成するように構成される積層体の製造方法であって、前記積層体は、第1基材及び第2基材の中間に少なくとも部分的に配設された複数の弾性要素を有し、前記第1基材は、複数の一次繊維結合を含む、中に形成される一次繊維結合パターンを有し、
当該方法は、
高密度化領域を前記第1基材に形成する工程であって、前記高密度化領域の各々の外周が前記一次繊維結合の各々の外周よりも大きく、前記高密度化領域は共に前記第1基材に高密度化領域のパターンを形成する、という工程と、
前記弾性要素を前記第1基材の一部に貼着する工程と、
前記第2基材を前記第1基材または前記弾性要素のいくつかに接合する工程と、
前記弾性要素が少なくとも部分的に収縮できるようにすることによって複数のしわを前記第1基材に形成する工程であって、前記しわの出現率及び振幅の範囲が前記高密度化領域の前記パターンから生じる、という工程と、を含む、方法。 - 前記第1及び第2基材は、不織布材料を含む、請求項1に記載の方法。
- 前記第2基材は、中に形成される複数の一次繊維結合を含む第2の一次繊維結合パターンを有し、
当該方法は、
高密度化領域を前記第2基材に形成する工程であって、前記第2基材における前記高密度化領域の各々の外周が前記第2基材における前記一次繊維結合の各々の外周よりも大きく、前記高密度化領域は共に前記第2基材に高密度化領域の第2パターンを形成する、という工程と、
前記弾性要素が少なくとも部分的に収縮できるようにすることによって複数のしわを前記第2基材に形成する工程であって、前記しわの出現率及び振幅の範囲が前記高密度化領域の前記第2パターンから生じる、という工程と、を含む、請求項1又は2に記載の方法。 - 前記第1基材における前記高密度化領域のパターンが、前記第2基材における前記高密度化領域の第2パターンと同じである、請求項3に記載の方法。
- パターン状の接着剤を前記第1基材に塗布する工程と、
前記パターン状の接着剤を使用して、前記弾性要素を前記第1基材の一部に取り付ける工程と、を含む、請求項1〜4のいずれか一項に記載の方法。 - カレンダー加工、エンボス加工、機械的変形、及び熱接着のいずれかによって、前記高密度化領域を前記第1基材に形成する工程を含む、請求項1〜5のいずれか一項に記載の方法。
- 前記第1基材における前記高密度化領域の各々の外周が2mm超である、請求項1〜6のいずれか一項に記載の方法。
- 前記第1基材における前記高密度化領域の各々のアスペクト比が5超である、請求項1〜7のいずれか一項に記載の方法。
- 前記第1基材における前記高密度化領域の最長寸法の延伸方向に対して横断する方向で、前記弾性要素を前記第1基材の一部に貼着する工程を含む、請求項1〜8のいずれか一項に記載の方法。
- 吸収性物品のシャーシと接合されるように構成される積層体の製造方法であって、前記積層体は第1基材及び第2基材の中間に少なくとも部分的に配設された複数の弾性要素を有し、前記第1基材は当該第1基材に一次繊維結合を形成する高密度化領域のパターンを有し、前記高密度化領域の各々が、その最も狭い寸法では少なくとも0.5mmであり、その最長寸法では少なくとも1mmであり、
当該方法は、
前記弾性要素を前記基材の1つに貼着する工程であって、当該弾性要素は予め歪みを付与された状態のときに取り付けられる、という工程と、
第2基材を前記第1基材または前記弾性要素のいくつかに接合する工程と、
前記弾性要素が収縮できるようにすることによって複数のしわを含む一部分を前記弾性積層体に形成する工程であって、前記しわの出現率及び振幅の範囲が前記高密度化領域の前記パターンから生じる、という工程と、を含む、方法。 - 前記高密度化領域の各々の外周が3mm超である、請求項10に記載の方法。
- 前記高密度化領域の各々のアスペクト比が3超である、請求項10又は11に記載の方法。
- 前記高密度化領域の各々のアスペクト比が5超である、請求項10又は11に記載の方法。
- 前記高密度化領域の各々がその最長寸法において少なくとも3mmである、請求項10〜13のいずれか一項に記載の方法。
- 前記第1基材における前記高密度化領域の最長寸法の延伸方向に対して横断する方向で、前記弾性要素を前記第1基材の一部に貼着する工程を含む、請求項10〜14のいずれか一項に記載の方法。
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