JP2017093736A - 使い捨て着用物品 - Google Patents
使い捨て着用物品 Download PDFInfo
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- JP2017093736A JP2017093736A JP2015227871A JP2015227871A JP2017093736A JP 2017093736 A JP2017093736 A JP 2017093736A JP 2015227871 A JP2015227871 A JP 2015227871A JP 2015227871 A JP2015227871 A JP 2015227871A JP 2017093736 A JP2017093736 A JP 2017093736A
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- Life Sciences & Earth Sciences (AREA)
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Abstract
【解決手段】おむつ10の前ウエスト域13には、横方向Xへ伸縮可能に延びる複数条の前ウエスト弾性体30が配置されており、前ウエスト弾性体30は、吸液性コア25の前端縁25aの縦方向Yの外側に隣接して位置する第1弾性体31と、前端縁25aの縦方向Yの内側に隣接して位置する第2弾性体32と、第2弾性体32の縦方向Yの内側に隣接して位置する第3弾性体33とを有し、第1及び第2弾性体31,32の収縮力が、第3弾性体33の収縮応力よりも小さくなっている。
【選択図】図3
Description
図1〜図3に示すとおり、本発明の使い捨て着用物品の一例として示す使い捨ておむつ10は、縦方向Y及びそれに直交する横方向Xと、横方向Xの幅寸法を二等分する仮想中心線P−Pと、肌対向面及びそれに対向する非肌対向面と、弾性ウエストパネル11と、弾性ウエストパネル11の肌対向面に取り付けられた吸収パネル12と、前ウエスト域13と、後ウエスト域14と、前後ウエスト域13,14間を縦方向Yに延びるクロッチ域15とを含む。おむつ10は、仮想中心線P−Pに関して対称に形成されており、弾性ウエストパネル11は、前ウエスト域13を形成する前ウエストパネル16と、後ウエスト域14を形成する後ウエストパネル17とから構成されている。
第1〜第3弾性体31〜33を含む各前後ウエスト弾性体30,40の収縮力は、前後ウエストパネル16,17において、所定幅(縦方向Yの寸法)を有する、各弾性体を含む領域を短冊片状に切り取ることによって求めることができる。具体的には、例えば、第2弾性体32の収縮力を測定するときには、まず、弾性ウエストパネル11から吸収パネル12を取り外した後に、サイドシーム部18を剥離して前後ウエストパネル16,17を分離する。次に、前ウエストパネル16において、第1弾性体31と第2弾性体32とのピッチ間の縦方向の寸法を2等分する中央部位を横断する第1切断ラインと、第2弾性体32と第3弾性体33とのピッチ間の縦方向Yの寸法を2等分する中央部位を横断する第2切断ラインとに沿って第2弾性体32を含む、両側縁16c,16d間に延びる所定幅の短冊片を切り取って試験片とした。なお、試験片を切り出す前に、おむつ10を展開してその表面に各弾性体の収縮作用によるギャザーがなくなる程度にまで伸長させた状態で、試験片の横方向Xの寸法を測定して初期寸法とした。
各弾性域の伸長応力の測定には、(株)島津製作所製のオートグラフ型引張試験機(例えば、AG−1KN1)を用いた。まず、おむつ10をその表面に各弾性体の収縮作用によるギャザーがなくなる程度にまで伸長させた状態で、前後ウエスト域13,14におけるサイドシーム部18の内側縁間の横方向Xの寸法(K1,K2)を予め測定した後に、おむつ10のサイドシーム部18を含めた両側縁部をカッターで切断し、前ウエスト域13側の部分と後ウエスト域14側の部分とから、各弾性域50−53,60−63を切り取って試料(合計8枚)とした。次に、各試料の一方端を固定チャック、他方端を可動チャックに挟み、300mm/minの速度で初期寸法K1,K2の約90%の大きさまで伸長させた後に反転させて、初期寸法K1,K2の約75%の大きさまで収縮させたときの引張荷重(N)を求めて、単位幅(mm)当たりの応力値(N/mm)に換算して伸長応力とした。
図8は、第2実施形態に係るおむつ10の図2と同様の展開平面図である。本実施形態に係るおむつ10の基本的構成態様は、第1実施形態と同様であって、相違する構成について以下に説明する。
12 吸収パネル
12a 吸収パネルの前端縁
12b 吸収パネルの後端縁
13 前ウエスト域
14 後ウエスト域
15 クロッチ域
16a 前ウエスト域の内端縁
16b 前ウエスト域の外端縁
17a 後ウエスト域の内端縁
17b 後ウエスト域の外端縁
25 吸液性コア
25a 吸液性コアの前端縁
25b 吸液性コアの後端縁
30 前ウエスト弾性体
31 第1弾性体
32 第2弾性体
33 第3弾性体
35 弾性体
50,60 外側弾性域
51,61 第1中間弾性域
52,62 第2中間弾性域
53,63 内側弾性域
70 両側部
71 両端固定部
72 自由縁部
73 カフ弾性体
80 変形誘導部
R1 第1弾性体と吸液性コアの前端縁との縦方向における離間寸法
R2 第2弾性体と吸液性コアの前端縁との縦方向における離間寸法
X 横方向
Y 縦方向
Claims (11)
- 縦方向及び横方向を有し、前ウエスト域、後ウエスト域と、前記前後ウエスト域間に位置するクロッチ域と、前記クロッチ域から前記前後ウエスト域へ延びる吸液性コアを有する吸収パネルとを含む使い捨て着用物品において、
前記前ウエスト域には、前記横方向へ伸縮可能に延びる複数条の前ウエスト弾性体が配置されており、
前記前ウエスト弾性体は、前記吸液性コアの前端縁の前記縦方向の外側に隣接して位置する第1弾性体と、前記前端縁の前記縦方向の内側に隣接して位置する第2弾性体と、前記第2弾性体の前記縦方向の内側に隣接して位置する第3弾性体とを有し、
前記第1及び第2弾性体の収縮力が、前記第3弾性体の収縮力よりも小さいことを特徴とする前記着用物品。 - 前記前ウエスト域の前記前ウエスト弾性体は、前記第1弾性体の伸長倍率が、前記第2及び第3弾性体の伸長倍率よりも低い請求項1に記載の着用物品。
- 前記吸液性コアの前記前端縁と前記第1弾性体との前記縦方向における離間寸法が、前記前端縁と前記第2弾性体との前記縦方向における離間寸法よりも大きい請求項1又は2に記載の着用物品。
- 前記前ウエスト域は、内外端縁と、前記外端縁側に位置する外側弾性域と、前記内端縁側に位置する内側弾性域と、前記外側弾性域の前記縦方向の内側において隣接し、前記第1及び第2弾性体を含む第1中間弾性域と、前記第1中間弾性域と前記内側弾性域との間に位置し、前記第3弾性体を含む第2中間弾性域とを有し、前記外側弾性域の伸長応力よりも前記第1中間弾性域の伸長応力が高い請求項1〜3のいずれかに記載の着用物品。
- 前記前ウエスト域において、前記各弾性域の伸長応力の相関関係が、第2中間弾性域>第1中間弾性域≧外側弾性域>内側弾性域である請求項4に記載の着用物品。
- 前記第1中間弾性域において、前記第1及び第2弾性体を除く他の弾性体の収縮力が、前記第1及び第2弾性体の収縮力よりも大きい請求項4又は5に記載の着用物品。
- 前記後ウエスト域は、内外端縁と、前記外端縁側に位置する外側弾性域と、前記内端縁側に位置する内側弾性域と、前記外側弾性域の前記縦方向の内側において隣接する第1中間弾性域と、前記第1中間弾性域と前記内側弾性域との間に位置する第2中間弾性域とを有し、各弾性域の伸長応力の相関関係が、外側弾性域≧第1中間弾性域>第2中間弾性域>内側弾性域である請求項1〜6のいずれかに記載の着用物品。
- 前記後ウエスト域の前記外側弾性域の伸長応力が、前記前ウエスト域の前記外側弾性域の伸長応力よりも高い請求項1〜7のいずれかに記載の着用物品。
- 前記前後ウエスト域の前記第1中間弾性域は、それぞれ、前記吸収パネルのうちの前記吸液性コアの前記前後端縁から前記縦方向の外側に位置する前後端縁と平面視において重なる請求項4〜8のいずれかに記載の着用物品。
- 前記吸収パネルの前記肌対向面側において前記縦方向へ延びる一対の防漏カフをさらに有し、前記防漏カフは、前記縦方向において対向する両端固定部と、前記縦方向へ延びる両側部と、前記縦方向へ延びる複数条のカフ弾性体が配置された自由縁部とを有し、前記吸収パネルの前記前後端縁において前記両端固定部が固定される請求項1〜9のいずれかに記載の着用物品。
- 前記吸液性コアには、前記前端縁から前記縦方向の内側へ延びる変形誘導部が形成される請求項1〜10のいずれかに記載の着用物品。
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