JPWO2018061220A1 - 吸収性物品 - Google Patents
吸収性物品 Download PDFInfo
- Publication number
- JPWO2018061220A1 JPWO2018061220A1 JP2017559492A JP2017559492A JPWO2018061220A1 JP WO2018061220 A1 JPWO2018061220 A1 JP WO2018061220A1 JP 2017559492 A JP2017559492 A JP 2017559492A JP 2017559492 A JP2017559492 A JP 2017559492A JP WO2018061220 A1 JPWO2018061220 A1 JP WO2018061220A1
- Authority
- JP
- Japan
- Prior art keywords
- embossed
- absorbent article
- absorbent
- pair
- colored layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Images
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Abstract
液透過性シート(3)と、吸収体(5)と、有色層(15)と、液不透過性シート(17)とをその順で備え、長手方向(L)、幅方向(W)及び厚さ方向(T)を有する吸収性物品(1)であって、吸収性物品(1)が、お互いに離間して配置されている一対のエンボス部(21)と、それらの間に配置された非エンボス部(27)とを含むエンボス領域(29)を備え、一対のエンボス部(21)のそれぞれが、吸収体(5)をエンボスしているが、有色層(15)をエンボスしておらず、非エンボス部(27)が、吸収体(5)及び有色層(15)をエンボスしておらず、エンボス領域(29)では、吸収体(5)のエンボス部構成部分(31)の厚さが、吸収体(5)の非エンボス部構成部分(33)の厚さよりも薄いことを特徴とする吸収性物品(1)。
Description
例えば、特許文献1には、液透過性の表面シート、液不透過性の裏面シート、及び前記表面シートと前記裏面シートとの間に配置される吸収体を有する吸収性物品であって、前記吸収体は、着色層と、前記着色層よりも前記表面シート側に配置された吸収層と、を備えており、前記吸収体には、前記表面シート、前記吸収層及び前記着色層を、前記表面シート側から前記裏面シート側に圧縮した圧搾部が形成されており、前記着色層は、着色された繊維が積層されており、前記吸収層は、エアレイド法によって繊維が積層され、当該繊維同士を接着するバインダーを有していない、吸収性物品が記載されている。
従って、本開示は、液透過性シート側から位置合わせすべき場所を把握しやすく、着用の際に、吸収性物品の位置合わせすべき位置と、着用者の配置すべき位置とを合わせやすい吸収性物品を提供することを目的とする。
[態様1]
液透過性シートと、吸収体と、有色層と、液不透過性シートとをその順で備え、長手方向、幅方向及び厚さ方向を有する吸収性物品であって、
上記吸収性物品が、一対のエンボス部と、それらの間に配置された非エンボス部とを含むエンボス領域を備え、
上記一対のエンボス部のそれぞれが、上記吸収体をエンボスしているが、上記有色層をエンボスしておらず、
上記非エンボス部が、上記吸収体及び上記有色層をエンボスしておらず、
上記エンボス領域では、上記吸収体の、上記一対のエンボス部のそれぞれを構成するエンボス部構成部分の厚さが、上記吸収体の、上記非エンボス部を構成する非エンボス部構成部分の厚さよりも薄い、
ことを特徴とする、上記吸収性物品。
また、本明細書では、吸収性物品のエンボス領域の位置と、着用者の配置すべき位置(例えば、膣口、尿口、肛門等)とを合わせることを、単に「位置合わせ」と称する場合がある。
上記エンボス領域では、上記吸収体の上記エンボス部構成部分の坪量が、上記吸収体の上記非エンボス部構成部分の坪量よりも小さい、態様1に記載の吸収性物品。
上記吸収体が、パルプ繊維と、高分子吸収剤とを含む吸収コアを備え、上記吸収コアにおいて、上記一対のエンボス部のそれぞれを構成する吸収コアエンボス部構成部分の上記パルプ繊維の質量比が、上記非エンボス部を構成する吸収コア非エンボス部構成部分の上記パルプ繊維の質量比よりも高い、態様1又は2に記載の吸収性物品。
上記一対のエンボス部のそれぞれが、上記厚さ方向において、上記液透過性シートをさらにエンボスしている、態様1〜3のいずれか一項に記載の吸収性物品。
上記エンボス領域が、上記吸収性物品の排泄口当接域を含む領域に配置されている、態様1〜4のいずれか一項に記載の吸収性物品。
上記吸収性物品が、上記液不透過性シートに、上記吸収性物品を着衣に固定するための固定部を有し、上記一対のエンボス部が、上記非エンボス部の、上記幅方向の両外側で、上記長手方向に延びている、態様5に記載の吸収性物品。
上記非エンボス部が、排泄口当接域に配置されており、上記一対のエンボス部が、上記上記排泄口当接域の外縁を、連続的又は間欠的に取り囲んでいる、態様6に記載の吸収性物品。
上記吸収性物品が、上記エンボス領域の内側に、一対の第2エンボス部と、それらの間に配置された第2非エンボス部とを含む第2エンボス領域を備え、上記一対の第2エンボス部のそれぞれが、上記液透過性シート及び上記吸収体をエンボスしているが、上記有色層をエンボスしておらず、第2非エンボス部が、上記吸収体及び上記有色層をエンボスしていない、態様7に記載の吸収性物品。
上記吸収性物品が使い捨ておむつであり、上記一対のエンボス部のそれぞれが、上記長手方向に延びる、折曲げ誘導部である、態様1〜5のいずれか一項に記載の吸収性物品。
上記吸収性物品は、使い捨ておむつであるとともに、エンボス部が長手方向に延びる折曲げ誘導部であるため、上記吸収性物品は、フィット性に優れる。
上記吸収性物品が、上記吸収体と、上記液不透過性シートとの間に第2吸収体を備え、上記有色層が、第2吸収体の肌側面を構成している、態様1〜9のいずれか一項に記載の吸収性物品。
上記吸収性物品は、有色層を構成する第2吸収体をさらに含むので、液不透過性シートの着衣当接面等に形成される色彩とは無関係に、吸収性物品の液透過性シート側から、吸収性物品の位置合わせの目印となりやすい色彩を選択することができる。
上記有色層が、機能性成分をさらに含む、態様1〜10のいずれか一項に記載の吸収性物品。
上記吸収性物品では、有色層が機能性成分をさらに含むので、着用者が、機能性成分の機能と、有色層の色とを関連づけ、機能性成分の機能を実感しやすくなる。
図1〜図3は、本開示の実施形態の1つ(以下、「第1実施形態」と称する)に従う吸収性物品1、具体的には、生理用ナプキンを説明するための図である。具体的には、図1は、吸収性物品1の平面図である。図2は、吸収性物品1の、図1のII−II断面における部分断面図である。図3は、エンボス部21〜エンボス部25が形成される前の吸収体5の、図1のII−II断面に相当する断面図である。
吸収体5は、吸収コア7と、吸収コア7を覆う2枚のコアラップ13とから成り、吸収コア7は、パルプ繊維9と、高分子吸収剤11とを含む。
一対のエンボス部21(21a,21b)は、非エンボス部27の幅方向Wの両外側に配置され、そして一対のエンボス部21(21a,21b)のそれぞれは、長手方向Lに延びている。
その他の部分は、第1実施形態に示される吸収性物品1と同様であるため、説明を省略する。
なお、吸収性物品1は、サイドシート101と、液透過性シート3及び吸収体5をエンボスしている、エンボス部95、エンボス部96及びエンボス部97を備える。
吸収体5は、吸収コア7と、吸収コア7を覆う2枚のコアラップ13とから成り、吸収コア7は、パルプ繊維9と、高分子吸収剤11とを含む。
吸収体5は、吸収コア7と、吸収コア7を覆う2枚のコアラップ13とから成り、吸収コア7は、パルプ繊維9と、高分子吸収剤11とを含む。
低坪量領域37では、高坪量領域35と比較して、高分子吸収剤11が堆積しにくく、そしてパルプ繊維9の堆積速度も緩やかであるため、低坪量領域37は、高坪量領域35と比較して、坪量が小さくなり、そしてパルプ繊維9及び高分子吸収剤11の総質量に対する、パルプ繊維の質量比が大きくなる。
特に、液透過性シート及びコアラップのそれぞれの素材は、布帛(例えば、不織布、織布、編物)及びシート、例えば、開孔を有する樹脂シート等から選択されることができ、そして布帛であることが好ましい。エンボス部において光の透過性を確保しやすくし、非エンボス部において光の不透過性を確保しやすくする観点からである。
なお、顔料、例えば、酸化チタンは、液透過性シートの材料として一般的な熱可塑性樹脂と比較して屈折率が高く、液透過性シートの酸化チタンの量が増えるほど、熱可塑性樹脂と、酸化チタンとの界面において光が反射しやすくなるため、光の透過性が低くなる傾向がある。
本明細書では、坪量は、試料を、その面積が100cm2となるように、例えば、3cm×3cmのサイズに切り出し、その質量を測定することにより算出される。
本開示の吸収性物品が、複数のエンボス領域を備える場合には、複数のエンボス領域のそれぞれにおける好ましい特性は、上述のとおりである。
また、一対のエンボス部のそれぞれが相互に連結し、1つの連結したエンボス部を形成していてもよい。上記連結したエンボス部は、連続的又は間欠的に延びていてよい。
上記厚さは、液体窒素等で冷凍させた吸収体を切断し、その切断面の画像を電子顕微鏡で撮影し、当該画像から測定することができる。
上記エンボス部構成部分の坪量は、吸収体から、エンボス部構成部分を切り出し、その面積及び質量を測定することにより算出される。
パルプ繊維の質量比は、吸収コアにおける、パルプ繊維の質量の、吸収コアを構成する成分の総質量に対する比を意味する。
上記有色層は、購入することができ、そして白色の不織布、透明又は半透明の樹脂フィルムに、着色材料を塗布、印刷等することにより形成することができる。
同様に、上記有色層は、液透過性シートと、好ましくは50以下、より好ましくは40以下、そしてさらに好ましくは30以下の色差を有する。そうすることにより、着用者が、液透過性シート側から、エンボス領域における非エンボス部を通して、有色層の色を視認しにくくなる傾向がある。
(1)20℃の恒温室に、コニカミノルタ社製、色彩色差計CR−300を準備し、測定すべき液透過性シートと、有色層と、ADVANTEC社の定性ろ紙 No.2 φ55(JIS P 3801)とを準備し、それらを1時間静置する。
(2)上記定性ろ紙の上に、測定すべき液透過性シートを、その肌当接面が上を向くように配置し、上記色差計にて、肌当接面のCIE L*a*b*表色系の座標(L* 0,a* 0,b* 0)を測定する。
(3)上記定性ろ紙の上に、有色層を、その肌側面が上を向くように配置し、上記色差計にて、CIE L*a*b*表色系の座標(L* 1,a* 1,b* 1)を測定する。
(4)色差(ΔE)を、次の式:
ΔE={(L* 1−L* 0)2+(a* 1−a* 0)2+(b* 1−b* 0)2}0.5
により算出する。
(5)測定は5回行い、その平均値を採用する。
上記スキンケア成分としては、例えば、消炎成分、鎮痒成分、かぶれ防止成分、保湿成分等が挙げられ、例えば、メントール、サリチル酸メチル等が挙げられる。
3 液透過性シート
5 吸収体
7 吸収コア
9 パルプ繊維
11 高分子吸収剤
13 コアラップ
15 有色層
17 液不透過性シート
19 固定部
21,22,23,24,25 エンボス部
27 非エンボス部
29 エンボス領域
31 エンボス部構成部分
32 吸収コアエンボス部構成部分
33 非エンボス部構成部分
34 吸収コア非エンボス部構成部分
35 高坪量領域
37 低坪量領域
51 第1吸収体
53 第2吸収体
55 高分子吸収剤層
57 第2上方コアラップ
59 第2下方コアラップ
61 側縁
63,65 切欠部
71 第1非エンボス部
73 第1エンボス部
75 第1エンボス領域
77 第2エンボス領域
79,81,83 第2非エンボス部
85,87,89 第2エンボス部
91 吸収コア第2エンボス部構成部分
93 吸収コア第2非エンボス部構成部分
Claims (11)
- 液透過性シートと、吸収体と、有色層と、液不透過性シートとをその順で備え、長手方向、幅方向及び厚さ方向を有する吸収性物品であって、
前記吸収性物品が、一対のエンボス部と、それらの間に配置された非エンボス部とを含むエンボス領域を備え、
前記一対のエンボス部のそれぞれが、前記吸収体をエンボスしているが、前記有色層をエンボスしておらず、
前記非エンボス部が、前記吸収体及び前記有色層をエンボスしておらず、
前記エンボス領域では、前記吸収体の、前記一対のエンボス部のそれぞれを構成するエンボス部構成部分の厚さが、前記吸収体の、前記非エンボス部を構成する非エンボス部構成部分の厚さよりも薄い、
ことを特徴とする、前記吸収性物品。 - 前記エンボス領域では、前記吸収体の前記エンボス部構成部分の坪量が、前記吸収体の前記非エンボス部構成部分の坪量よりも小さい、請求項1に記載の吸収性物品。
- 前記吸収体が、パルプ繊維と、高分子吸収剤とを含む吸収コアを備え、前記吸収コアにおいて、前記一対のエンボス部のそれぞれを構成する吸収コアエンボス部構成部分の前記パルプ繊維の質量比が、前記非エンボス部を構成する吸収コア非エンボス部構成部分の前記パルプ繊維の質量比よりも高い、請求項1又は2に記載の吸収性物品。
- 前記一対のエンボス部のそれぞれが、前記厚さ方向において、前記液透過性シートをさらにエンボスしている、請求項1〜3のいずれか一項に記載の吸収性物品。
- 前記エンボス領域が、前記吸収性物品の排泄口当接域を含む領域に配置されている、請求項1〜4のいずれか一項に記載の吸収性物品。
- 前記吸収性物品が、前記液不透過性シートに、前記吸収性物品を着衣に固定するための固定部を有し、前記一対のエンボス部が、前記非エンボス部の、前記幅方向の両外側で、前記長手方向に延びている、請求項5に記載の吸収性物品。
- 前記非エンボス部が、排泄口当接域に配置されており、前記一対のエンボス部が、前記排泄口当接域の外縁を、連続的又は間欠的に取り囲んでいる、請求項6に記載の吸収性物品。
- 前記吸収性物品が、前記エンボス領域の内側に、一対の第2エンボス部と、それらの間に配置された第2非エンボス部とを含む第2エンボス領域を備え、前記一対の第2エンボス部のそれぞれが、前記液透過性シート及び前記吸収体をエンボスしているが、前記有色層をエンボスしておらず、第2非エンボス部が、前記吸収体及び前記有色層をエンボスしていない、請求項7に記載の吸収性物品。
- 前記吸収性物品が使い捨ておむつであり、前記一対のエンボス部のそれぞれが、前記長手方向に延びる、折曲げ誘導部である、請求項1〜5のいずれか一項に記載の吸収性物品。
- 前記吸収性物品が、前記吸収体と、前記液不透過性シートとの間に第2吸収体を備え、前記有色層が、第2吸収体の肌側面を構成している、請求項1〜9のいずれか一項に記載の吸収性物品。
- 前記有色層が、機能性成分をさらに含む、請求項1〜10のいずれか一項に記載の吸収性物品。
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