JP2018520837A - 生分解性吸収性物品 - Google Patents
生分解性吸収性物品 Download PDFInfo
- Publication number
- JP2018520837A JP2018520837A JP2018523371A JP2018523371A JP2018520837A JP 2018520837 A JP2018520837 A JP 2018520837A JP 2018523371 A JP2018523371 A JP 2018523371A JP 2018523371 A JP2018523371 A JP 2018523371A JP 2018520837 A JP2018520837 A JP 2018520837A
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- JP
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- Prior art keywords
- diaper
- absorbent article
- layer
- outer layer
- inner 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.)
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- A61F13/15203—Properties of the article, e.g. stiffness or absorbency
- A61F13/15252—Properties of the article, e.g. stiffness or absorbency compostable or biodegradable
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Abstract
Description
先に述べたとおり、内層200は赤ちゃんの体の最も敏感な領域に、時には一度に数時間、隣接する層であるので、内層200はおむつの構造において重要な役割を果たす。内層200の品質および構成はまた、赤ちゃんのための吸収性および快適性(柔らかさ)のレベルを決定する。
内層200は、その一部として形成される表面パターン(表面修飾)201を有するように形成することができる。図2は、大略的に、少なくとも1つの領域において内層200の露出表面にわたってわずかな突出部のドットマトリックス形成物を有する一例示的表面パターン201を示す。表面パターン201を画定する突出部は、任意数の異なる形態、サイズ、および形状をとることができ、したがって、図2に示す円形のものに限定されないと理解されよう。
おむつ100は、異なる獲得/分散層および吸収性コアを有するように形成することができるか、または吸収性貯蔵構造体として作用する単一の最も内側の構造を有するように形成することができる。2つまたはそれ以上の層が存在する場合、獲得/分散層は、おむつ100の内層(トップシート)200の下にある層である。液体を赤ちゃんの皮膚から遠ざけ、より良好に吸収させるために、おむつのコア全体にわたって液体をより均一に分散させる。おむつ100が、内層200および別個の獲得/分散層を含む場合、吸収性コア構造体とともに、獲得/分散層は、不織綿材料などの天然繊維から形成されてもよいが、SAPを含まない。したがって、吸収性コア構造体中の超吸収性粒子(SAP)が、保持された流体を、セルロース系ADLから、および超吸収性粒子を含有する最終貯蔵部位(吸収性コア構造体)に吸収することができるまで、ADLは、吸収性製品内の急増した流体を獲得することができる。
本明細書に記載されるとおり、その機能を果たすために、吸収性物品(おむつ100)の吸収性コア構造体300は、何らかの制御をしながら、大量の流体を迅速に取り込むことができなければならない。この場合には、吸収性材料は、必然的に、流体の襲撃(急増)を取り込むために大量の空隙を必要とするが、流体を制御すること、流体を広げること、および流体を保持することにおいて適切な構造的特性を必要とする。
バックシートまたはカバー400はおむつ100の外層であり、液体がおむつ100から漏れ出るのを防止するように構成されている。したがって、バックシート400は流体バリアとして作用する。本発明によれば、バックシート400はまた、生分解性であるように天然材料から形成され、特に、本明細書で列挙されるものなどの天然繊維から形成される不織布構造体である。一例示的実施形態では、バックシート400は、流体不透過層を提供するように構成された不織綿構造体である。
図1にて示すように、好ましくは伸縮可能なウエストバンド110を画定するおむつ100の後部107は、それぞれの側部フラップ120がおむつ100の前部109に取り付けられるように、再締結可能な締結具122を各々が含む一対の側部フラップ120を含む。側部フラップ120は、後部107に形成されたサイドパネルから横方向および外方向に延びることができる。サイドパネルは、サイドパネルの間に配置される後部107のウエストバンド部分に沿った伸長度を有するように形成することができる。本明細書に記載されるように、後部107の伸長部分およびおむつ100の任意の他の部分は、異なるサイズの乳児に適応し、おむつ100と乳児との間のぴったりとしたフィット(密封)を確実にするのに十分な伸長を提供するための弾性部材を含むことができる。
本発明に従ういくつかの実施形態では、吸収性製品は、その構造体に組み込まれる抗臭技術を有することができる。たとえば、おむつ100は抗臭技術を含むことができる。抗臭技術は、成人失禁用製品に組み込むことができるので、着用者は失禁に関連する悪臭に悩まされることを心配する必要がない。本明細書に記載される抗臭技術は、任意であり、本明細書に記載される吸収性製品(たとえば、おむつ100)はこのような特徴を伴うことなく形成することができると理解されるであろう。
1950年代に、ジステアリルジメチルアンモニウムクロリド(DHTDMAC)は、機械洗浄がおむつに付与するごわついた肌触りを和らげるために、最初に布地柔軟剤として導入された。この化合物は、カチオンが非常にゆっくりと生分解するために打ち切られた。現代の布地柔軟剤は、第四級アンモニウムカチオンの塩をベースにしている傾向がある。特徴的なことに、カチオンは、脂肪酸から誘導される1つまたは2つの長鎖アルキルを含有する。その他のカチオン性化合物は、イミダゾリウム、置換アミンの塩、または第四級アルコキシアンモニウム塩から誘導することができる。
アニオン性柔軟剤および帯電防止剤は、たとえば、リン酸のモノエステルおよびジエステルの塩、ならびに脂肪族アルコールであることができる。これらは、従来のカチオン性柔軟剤とともに使用されることが多い。カチオン性柔軟剤は、洗剤にて使用されるアニオン性界面活性剤と結合して固体沈殿物を形成するため、アニオン性界面活性剤と両立できない。。したがって、その代わりに、すすぎサイクルの間にカチオン性柔軟剤を添加しなければならない。アニオン性柔軟剤は、アニオン性界面活性剤と直接組み合わせることができる。その他のアニオン性柔軟剤は、スメクタイト粘土をベースとすることができる。エトキシ化ホスフェートエステルなどのいくつかの化合物は、柔軟化特性、抗静電特性、および界面活性特性を有する。
以下の個々の成分もしくはその組み合わせからなるバインダー。すなわち、エトキシ化アルコール、エトキシ化グリコール、エトキシ化油、アクリル酸のポリマーもしくはコポリマー(メタクリル酸を含む)、および/または、
以下の個々の成分もしくはその組み合わせからなるカップリング剤。すなわち、エトキシ化アルコール、エトキシ化グリコール、エトキシ化油、アクリル酸のポリマーもしくはコポリマー(メタクリル酸を含む)、および/または、
第一級、第二級もしくは第三級アルコール、もしくは溶媒(任意のケトンを含む)からなる乾燥剤。
上記の抗臭組成物は、水性系または溶媒系のいずれかで担持することができる。
おむつ600は、内層(トップシート)200を含む。図7において、内層200は、おむつ600のその他の層を露出して示すために、部分的に折り返して示されている。内層200は、上記に記載された材料のいずれかで形成することができる。したがって、内層200は生分解性材料で形成され、図示した実施形態において、内層200は綿(たとえば、不織綿)で形成される。
図7の内層200の下に、獲得分散層(ADL)610がある。先に述べたように、ADLはおむつ600において任意の構成要素(層)であり、したがって、おむつ600がADL610を含むように示される一方で、このような層はおむつ600から除去することができることが理解されよう。ADL610は、本明細書にて前述したものを含む目的の機能(流体獲得および別の層(すなわち、吸収性コア)への流体分散)を果たす任意数の異なる材料で形成することができ、一実施形態では、ADL610は、天然材料で形成されるものなど、生分解性シートの形態である。したがって、ADL610は、綿布地材料(たとえば、不織綿シート)および/またはPLAの形態であることができる。先に述べたように、従来のおむつのADLは、ポリプロピレン/ポリエチレン(PP/PE)で形成されているため、生分解性ではないという点で合成物の構造を有する。好ましい実施形態では、ADLはPLAから構成される。
おむつ600は、吸収性コア605で少なくとも形成されている吸収性コア構造体を含み、任意で、吸収性コア605を形成する材料を封入して収容する吸収性コアラップ620も含む。本明細書に記載されるとおり、吸収性コアラップ620は、全体構造に形状を付与するように形作ることができる。吸収性コア構造体は、内層200または存在する場合はADL610のいずれかに隣接して配置される。
上述のように、吸収性コアラップ620は、任意数の異なる形状をとることができる。たとえば、内部構成要素、すなわち、たとえばSAPおよびパルプを受け取るための中空内部を作り出すように接合された最上層および対向する最下層を有する点で、(閉鎖端部を有する)ピローケースと同様であることができる。あるいは、吸収性コアラップ620は、図7に示す構造を有することができ、より具体的には、吸収性コアラップ620は、内部構成要素を受け取る中空内部を有する波形形状コアであることができる。図7で示す波形コアラップ620は、一連の山部622および交互の谷部624により画定される。谷部は、水分が迅速に移動するためのチャネルを画定する。チャネルおよび谷部は、吸収性コアラップ620の長さに沿って長手方向に配置される。チャネルのサイズおよび数は、変えることができると理解されよう。
任意でフィルム630を設けることができ、吸収性コア構造体に隣接させて吸収性コア構造体の後側に配置することができる。したがって、フィルム630は、吸収性コア構造体(たとえば、存在する場合は、ラップ620)と接触して配置される。図7にて示すように、フィルム630は、吸収性コア構造体よりも大きな設置面積を有することができる。したがって、フィルム630は、吸収性コア構造体の周りに完全に延びている(吸収性コア構造体の周縁部から外向きに延びている)。一実施形態では、フィルム630の設置面積は、吸収性コア構造体の設置面積とほぼ同等である。
おむつは、おむつ600の側部での漏れを効果的に防止するように設計された一対のレッグカフ500も含み、それにより乳児の皮膚を乾いた状態に保ち、保護する。その他の構成要素と同様に、レッグカフ500は生分解性材料で形成される。本明細書に記載されたものを含む、任意数の生分解性材料が、レッグカフ500を形成するのに使用することができる。たとえば、レッグカフ500は、綿(不織布)またはその他の天然材料で形成することができる。
先のおむつと同様に、おむつ600は、おむつ100の外層に相当し、流体がおむつ100から漏れ出るのを防止するように構成されている、バックシートまたはカバー400を含む。したがって、バックシート400は外側カバーとして働く。図7にて示すように、バックシート400は、典型的には、内層200を含むその他の構成要素のものよりも大きい設置面積を有する。
Claims (20)
- 天然繊維を含む不織布内層と、
天然繊維および処理剤を含む不織布外層であって、前記処理剤が、当該不織布外層の少なくとも1つの表面に適用されるワックス、ウレタン、シリコーン、フルオロカーボン、非フルオロケミカル撥水剤からなる群から選択される少なくとも1種の化合物を含む不織布外層と、
前記内層と前記外層との間に配置される天然繊維または繊維性材料を含むコアと、を備える使い捨て吸収性物品。 - 前記吸収性物品が、おむつ(diaper)、おむつ(nappy)、吸収性パンツ、トレーニングパンツ、成人用失禁製品、ペット用失禁製品、女性用衛生製品、創傷包帯、および胸パッドからなる群から選択される、請求項1に記載の吸収性物品。
- 前記コアが、ポリアクリレート超吸収性粒子(SAP)を含む、請求項1に記載の吸収性物品。
- 前記内層と前記コアとの間に、ポリ乳酸から構成される獲得/分散層をさらに備える、請求項1に記載の吸収性物品。
- 前記コアが、複数の山部および谷部により画定される波形構造を備える、請求項1に記載の吸収性物品。
- 前記コアが、緩い繊維を取り囲む不織布ラップを備える、請求項1に記載の吸収性物品。
- 前記外層処理剤が、デンドリマーワックスを含む、請求項1に記載の吸収性物品。
- 前記処理剤が、前記外層の前記上部表面に適用される、請求項1に記載の吸収性物品。
- 前記内層が、複数の細孔を含む、請求項1に記載の吸収性物品。
- 少なくとも1つの層が、約0.1%〜約10%の亜鉛、銅、銀、またはアルミニウム塩を含む脱臭組成物を含む、請求項1に記載の吸収性物品。
- 約0.1%と約10%とのリシノール酸亜鉛を含む、請求項10に記載の吸収性物品。
- 前記脱臭組成物が、
エトキシ化アルコール、エトキシ化グリコール、エトキシ化油、アクリル酸のポリマーまたはコポリマー、およびこれらの組み合わせからなる群から選択される少なくとも1種の化合物と、
第一級、第二級および第三級アルコール、ならびにこれらの組み合わせからなる群から選択される少なくとも1種の乾燥剤と、をさらに含む、請求項11に記載の吸収性物品。 - 生分解性おむつであって、
綿を含む不織布内層と、
ワックス、ウレタン、シリコーン、フルオロカーボン、および非フルオロケミカル撥水剤、ならびにこれらの組み合わせからなる群から選択される疎水性剤で処理される綿を含む外層と、
前記内層と前記外層との間に配置される綿およびポリアクリレート超吸収性粒子を含む吸収性コアと、を備える、おむつ。 - 前記内層が、複数の細孔を含む、請求項13に記載のおむつ。
- 前記コアと前記外層との間、または前記コアと前記内層との間のうちの少なくとも一方に配置されるポリ乳酸フィルムをさらに備える、請求項13に記載のおむつ。
- デンドリマーワックスまたはデンドリマーワックスエマルションからなる処理剤が、前記外層に適用される、請求項13に記載のおむつ。
- 前記処理剤が、100重量%〜200重量%追加して前記外層に適用される、請求項16に記載のおむつ。
- 前記処理剤が、前記外層の前記上部表面にのみ適用される、請求項13に記載のおむつ。
- 前記外層の後部から延びる一対の側部フラップをさらに備え、前記フラップが、前記外層の前部に前記フラップを固定することができるポリ乳酸締結具を含む、請求項13に記載のおむつ。
- 前記おむつが、ASTM試験法D5511−12、ASTM試験法5338−15、およびISO CD試験法14855−1:2012のうちの少なくとも1つに合格する、請求項13に記載のおむつ。
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KR20230106438A (ko) * | 2022-01-06 | 2023-07-13 | 장선경 | 다층 구조를 가지는 고성능 패드 |
KR102579935B1 (ko) | 2022-01-06 | 2023-09-15 | 장선경 | 다층 구조를 가지는 고성능 패드 |
Also Published As
Publication number | Publication date |
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EP3324910A1 (en) | 2018-05-30 |
US10709806B2 (en) | 2020-07-14 |
CN108135760A (zh) | 2018-06-08 |
CN108135760B (zh) | 2021-05-04 |
US20170021051A1 (en) | 2017-01-26 |
JP6805249B2 (ja) | 2020-12-23 |
US20200316245A1 (en) | 2020-10-08 |
EP3324910A4 (en) | 2019-04-03 |
EP3324910B1 (en) | 2024-05-01 |
HK1254610A1 (zh) | 2019-07-26 |
WO2017015477A1 (en) | 2017-01-26 |
KR20180041117A (ko) | 2018-04-23 |
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