JP2021518781A - 吸収性アセンブリを含む使い捨て吸収性衛生製品 - Google Patents
吸収性アセンブリを含む使い捨て吸収性衛生製品 Download PDFInfo
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Abstract
Description
目付の均一性を測定するための方法
評価のため、1つの同じ消費者パッケージから5つの隣接するおむつを取り出す、または5つの連続して製造されたおむつを製造から取り出す。
(サンプル重量(g))/(サンプル面積(0.001m2))
このテストは、吸収性アセンブリの前部および後部領域における保持容量の均一性を評価し、超吸収性ポリマーの分布を示す。この目的のため、目付均一性テスト(上述)において用いられたのと同じ60サンプルを用いる。
g/g吸収性=(最終サンプル重量-初期サンプル重量)/初期サンプル重量
g/10cm2吸収性=最終サンプル重量-初期サンプル重量
吸収性アセンブリの保持容量は、CRCテスト(遠心分離保持容量)の原理に沿って容易に評価することができる。この方法は業界においてよく知られており、フルネームのStandard Procedure、NWSP 241.0.R2(15)、Polyacrylate Superabsorbent Powders - Determination of the Fluid Retention Capacity in Saline Solution by Gravimetric Measurement Following Centrifugationの下でEDANAまたはINDAから入手可能である。しかしながら、このテストは小さなサンプル用に設計されており、以下に説明するように、吸収性アセンブリ全体を評価するにはいくつかの変更が必要である。
10 主要部分
11 トップシート
12 バックシート
13 吸収性アセンブリ
14 前端
15 後端
16 捕捉層
17 弾性手段
21 前面側パネル
22 前面側パネル
23 背面側パネル
24 背面側パネル
25 固定手段
131 第1の吸収性コア
132 第2の吸収性コア
Claims (17)
- ユーザの身体に対向するように意図された身体対向表面およびユーザの身体から離れた方を向くように意図された衣類対向表面を有する主要部分(10)を含む使い捨て吸収性衛生製品(1)であって、
前記主要部分は、前記身体対向表面に液体透過性トップシート(11)、前記衣類対向表面に液体不透過性バックシート(12)、および前記液体透過性トップシートと前記液体不透過性バックシートとの間に配置された吸収性アセンブリ(13)を含み、
前記主要部分(10)は、前端(14)および後端(15)を有し、前記前端から前記後端に向かう長手方向(L)を画定するとともに、前記長手方向に垂直な横方向(T)を画定し、
前記吸収性アセンブリ(13)は、積層関係で配置された第1の吸収性コア(131)及び第2の吸収性コア(132)を含み、
前記第1の吸収性コア(131)は、500から1000mmの長手方向長さ(Labs)および200から450mmの横幅(Wabs)を有し、前記吸収性アセンブリは、任意選択で超吸収性粒子と混合されたセルロース系繊維を含み、超吸収性粒子濃度は、0から30重量%であり、セルロース系繊維の目付は50から200g/m2であり、
前記第2の吸収性コア(132)は、前記第1の吸収性コアの前記長手方向長さ(Labs)の20%から80%の長手方向長さを有し、セルロース系繊維及び超吸収性粒子の混合物を含み、超吸収性粒子濃度が20から70重量%であり、前記セルロース系繊維の目付は250から500g/m2であり、
前記第2の吸収性コアの長手方向端部は、前記第1の吸収性コアの長手方向端部の間に位置する、使い捨て吸収性衛生製品。 - 前記第2の吸収性コアの平面表面積は、前記第1の吸収性コアの平面表面積の多くとも75%である、請求項1に記載の使い捨て吸収性衛生製品。
- 前記吸収性アセンブリ(13)は、前記第2の吸収性コアの前端と一致している、横方向に延在する第1の仮想線(T1)及び前記第2の吸収性コアの後端と一致している、横方向に延在する第2の仮想線(T2)によって、前記前記主要部分の前記前端の方の前部領域(Rf)と、前記主要部分の前記後端の方の後部領域(Rb)と、前記前部領域と前記後部領域との間の中央領域(Rc)と、に分割される、請求項1又は2に記載の使い捨て吸収性衛生製品。
- 前記中央領域(Rc)は、前記吸収性アセンブリの全保持容量の75%から95%までなどの少なくとも70%を提供する、請求項3に記載の使い捨て吸収性衛生製品。
- 前記前部領域(Rf)は、前記吸収性アセンブリの長手方向長さの10%から40%までの長手方向長さを有し、且つ/又は、
前記後部領域(Rb)は、前記吸収性アセンブリの長手方向長さ(Labs)の10%から40%までの長手方向長さを有する、請求項3又は4に記載の使い捨て吸収性衛生製品。 - 前記第2の吸収性コアは、100mmから200mmまでの横幅を有する、請求項1〜5のいずれか一項に記載の使い捨て吸収性衛生製品。
- 前記中央領域(Rc)の保持容量/平面表面積は、前記前部領域(Rf)及び前記後部領域(Rb)の保持容量/平面表面積の少なくとも2倍である、請求項3〜6のいずれか一項に記載の使い捨て吸収性衛生製品。
- 前記第1の吸収性コアは、粉砕セルロース系繊維、任意選択で超吸収性ポリマーと混合された粉砕セルロース系繊維を含む、請求項1〜7のいずれか一項に記載の使い捨て吸収性衛生製品。
- 前記前部領域および前記後部領域における前記セルロース系繊維と任意選択で超吸収性粒子との混合物は、本開示において提供された目付均一性を測定するための方法に従って測定して、多くとも20%の目付変動係数を有する、請求項1〜8のいずれか一項に記載の使い捨て吸収性衛生製品。
- 前記第1の吸収性コアは、セルロース系繊維及び超吸収性粒子の混合物を含み、
超吸収性粒子濃度は少なくとも5重量%である、請求項1〜9のいずれか一項に記載の使い捨て吸収性衛生製品。 - 前記セルロース系繊維と超吸収性ポリマーとの混合物は、本開示において提供された保持容量の均一性を測定するための方法に従って測定して、g/g吸収性として計算される、多くとも20%の変動係数の保持容量、および/またはg/10cm2として計算される、多くとも30%の変動係数の保持容量を有する、請求項10に記載の使い捨て吸収性衛生製品。
- 前記第1の吸収性コア(131)は、前記第2の吸収性コア(132)と直接的な接触状態になっている、請求項1〜11のいずれか一項に記載の使い捨て吸収性衛生製品。
- ロスウェル法に従って測定した、少なくとも1000mlの総吸収容量を有する、請求項1〜12のいずれか一項に記載の使い捨て吸収性衛生製品。
- 前記第2の吸収性コア(132)は、前記第1の吸収性コア(131)と前記液体不透過性バックシート(12)との間に配置され、または、前記第2の吸収性コア(132)は、前記第1の吸収性コア(131)と前記液体透過性トップシート(11)との間に配置されている、請求項1〜13のいずれか一項に記載の使い捨て吸収性衛生製品。
- 前記液体透過性トップシート(11)と前記吸収性アセンブリ(13)との間に挟まれた捕捉層材料(16)を含む、請求項1〜14のいずれか一項に記載の使い捨て吸収性衛生製品。
- 前記捕捉層材料(16)は完全に前記中央領域のエリア内に配置されている、請求項15に記載の使い捨て吸収性衛生製品。
- オープン型おむつ、パンツ型おむつ、ベルト型おむつ、失禁用パッドおよび取り外し可能インサートを含むリストから選択される、請求項1〜16のいずれか一項に記載の使い捨て吸収性衛生製品。
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