JP2023528817A - 高吸水性樹脂フィルムおよびこれを含む吸水性物品 - Google Patents
高吸水性樹脂フィルムおよびこれを含む吸水性物品 Download PDFInfo
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- A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
- A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
- A61F2013/51409—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F2013/530007—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made from pulp
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F2013/530481—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials
- A61F2013/530489—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials being randomly mixed in with other material
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F2013/53445—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad from several sheets
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- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
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- Absorbent Articles And Supports Therefor (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
本出願は2021年3月26日付韓国特許出願第10-2021-0039666号および2022年3月18日付韓国特許出願第10-2022-0034232号に基づいた優先権の利益を主張し、当該韓国特許出願の文献に開示された全ての内容は本明細書の一部として含まれる。
本発明の一実施形態による高吸水性樹脂フィルムは厚さが500μm以下であり、KS F 2611標準によって測定された吸湿能が10~100g/m2を満足する。
R1-COOM1
R1は、不飽和結合を含む炭素数2~5のアルキル基であり、
M1は、水素原子、1価または2価金属、アンモニウム基または有機アミン塩である。
本発明の一実施形態による吸水性物品は、液体不透過性背面シートと吸収体の間に前述の高吸水性樹脂フィルムを含むことを特徴とする。これにより、前記吸水性物品は液体を吸収した吸収体から放出される水分によって外部から感じられるじめじめ感が改善されて、優れた使用感を示すことができる。
本発明の吸水性物品で、液体不透過性背面シートと通気性防水フィルムの間、および/または通気性防水フィルムと吸収体の間には先に説明したような高吸水性樹脂フィルムが介される。
前記吸水性物品の液体不透過性背面シートとしては、ポリエチレン、ポリプロピレンなどのオレフィン系樹脂を紡糸して製造された不織布を使用することができる。前記不織布の製造法は特に制限されず、エアーレイド、サーマルボンド、スパンレース、スパンボンド、メルトブローン、スティッチボンドなどの加工法によって製造されたものを制限なく使用することができる。
一方、本発明の吸水性物品は液体不透過性背面シート上に、防水能を有しながら空気の流れをより円滑にするようにする通気性防水フィルムを含む。
本発明の吸水性物品に使用される吸収体は、高吸水性樹脂粒子の集合体である高吸水性樹脂粉末およびパルプを含む。
前記液体透過性上部シートとしては、液体が迅速に透過することができるように親水性を有しながら、触感が柔らかく使用者の皮膚に刺激を加えない素材を好適に使用することができる。
本発明の吸水性物品の製造方法は特に制限されず、各構成要素、即ち、前記液体不透過性背面シート、高吸水性樹脂フィルム、通気性防水フィルム、吸収体、および液体透過性上部シートを適切な順序に積層した後、エンボシングを用いて固定するか、または前記各構成要素の間をホットメルト接着剤などの接着剤を用いて固定させる方式で製造することができる。
<高吸水性樹脂フィルムの製造>
実施例1-1
アクリル酸55g、水酸化カリウム(KOH)45重量%溶液66.6g、および水55gを混合してアクリル酸の70モル%が中和された中和液を準備した。
モノマー組成物フィルムの厚さを50μmとし、含水ゲル重合体の乾燥温度を80℃、乾燥時間を10分としたことを除いて、実施例1-1と同様な方法で含水率10重量%、厚さ45μmの高吸水性樹脂フィルムを製造した。
モノマー組成物フィルムの厚さを160μmとし、含水ゲル重合体の乾燥温度を90℃、乾燥時間を10分にしたことを除いて、実施例1-1と同様な方法で含水率10重量%、厚さ149μmの高吸水性樹脂フィルムを製造した。
アクリル酸55g、水酸化カリウム(KOH)45重量%溶液66.6g、および水55gを混合してアクリル酸の70モル%が中和された中和液を準備した。
比較例1
(1)液体不透過性背面シートの製造
ポリプロピレンを高温で紡糸してポリプロピレン繊維が積層されたウェブ(web)を形成した後、一定のパターンのエンボス突起が形成されたカレンダーロール(calendar roll)を通じて前記ウェブを接合しながら表面に一定のパターンのエンボシングが形成された液体不透過性背面シート(不織布、気孔の大きさ約40~60μm、坪量12g/m2)を製造した。
50~55重量%のポリエチレン、40~45重量%の炭酸カルシウム、1~1.5重量%の分散剤、1~1.5重量%の酸化防止剤、2~3重量%の調色剤を混合して防水フィルム形成組成物を得た。
8重量%のサリチル酸、61重量%のポリエチレングリコール、および31重量%のセチルアルコールを混合して消臭組成物を製造した。その後、グラビアコーティング装置を用いて前記消臭組成物を基礎重量30g/m2の綿スパンレースで製造された通気接合不織布シートの表面にコーティングした。その後、消臭組成物でコーティングされた通気接合不織布シートを熱風乾燥チャンバー内に通過させて水分を蒸発させ消臭組成物で表面処理されたコアラップシートを製造した。
液体透過性上部シートとしては、15g/m2、0.1mm厚さのスパンボンド不織布を使用した。液体透過性上部シートは、小便などの液体が漏れなく上層吸収体に拡散するように上層吸収体の身体側表面を完全に覆うことができる形状に製造した。
前記製造された液体不透過性背面シートの一面に通気性防水フィルムを貼り合わせた。その後、通気性防水フィルムの上に前記吸収体および前記液体透過性上部シートを順次に積層させた後、これらを接着して吸水性物品(使い捨ておむつ)を製造した。
液体不透過性背面シートと通気性防水フィルムの間に前記実施例1-1で製造した高吸水性樹脂フィルムを追加的に積層したことを除いて、比較例1と同様な方法で吸水性物品を製造した。
液体不透過性背面シートと通気性防水フィルムの間に前記実施例1-2で製造した高吸水性樹脂フィルムを追加的に積層したことを除いて、比較例1と同様な方法で吸水性物品を製造した。
液体不透過性背面シートと通気性防水フィルムの間に前記実施例1-3で製造した高吸水性樹脂フィルムを追加的に積層したことを除いて、比較例1と同様な方法で吸水性物品を製造した。
通気性防水フィルムと吸収体の間に前記実施例1-4で製造した高吸水性樹脂フィルムを追加的に積層したことを除いて、比較例1と同様な方法で吸水性物品を製造した。
通気性防水フィルムと吸収体の間に前記実施例1-1で製造した高吸水性樹脂フィルムを追加的に積層したことを除いて、比較例1と同様な方法で吸水性物品を製造した。
通気性防水フィルムと吸収体の間に前記実施例1-2で製造した高吸水性樹脂フィルムを追加的に積層したことを除いて、比較例1と同様な方法で吸水性物品を製造した。
通気性防水フィルムと吸収体の間に前記実施例1-3で製造した高吸水性樹脂フィルムを追加的に積層したことを除いて、比較例1と同様な方法で吸水性物品を製造した。
液体不透過性背面シートと通気性防水フィルムの間に高吸水性樹脂フィルムの代わりに52μm厚さの高吸水性繊維(SAP fiber、Luquafleece(登録商標) SAF-52、Basf社)を積層したことを除いて、実施例2と同様な方法で吸水性物品を製造した。
液体不透過性背面シートと通気性防水フィルムの間に高吸水性樹脂フィルムの代わりに112μm厚さの高吸水性繊維(SAP fiber、Luquafleece(登録商標) SAF-112、Basf社)を積層したことを除いて、実施例2と同様な方法で吸水性物品を製造した。
液体不透過性背面シートと通気性防水フィルムの間に高吸水性樹脂フィルムの代わりに1.0mm厚さの吸収体(綿毛パルプ40重量%、高吸水性樹脂60重量%)を積層したことを除いて、実施例2と同様な方法で吸水性物品を製造した。
(1)吸湿量
高吸水性樹脂フィルムを15cm×24cmに裁断し、その一側面にアルミニウムテープを付けて断湿させて、吸湿性能分析用試片を製造した。前記試片を用いて、KS F 2611:2019標準によって下記方法で高吸水性樹脂の吸湿量を測定した。
2)恒温恒湿器内部を25℃、相対湿度75%で維持させて12時間吸湿させた後、質量(W2)を測定する。
3)下記式によって吸湿量を計算する。
吸湿量(g/m2)=(W2-W1)/0.036
高吸水性樹脂フィルムを20mm×60mmの大きさの長方形形態に切断面が滑らかなように裁断して試片を準備し、引張強度測定機器(TAXTplus、Stable Micro Systems社)の初期グリップ(grip)間隔を20mmにした後、前記試片を装着した。試片を秒当たり0.5mmの速度で引っ張って試片の破断が発生した時点の力(Force)(N)を測定し、その値を試片の断面積(mm2)で割って引張強度(MPa)を求めた。
(1)外部じめじめ感評価
湿度:50%、温度:38.7℃のチャンバー内で、ガラス板の上に前記各実施例および比較例で製造した吸水性物品を載せ、37℃の生理食塩水(0.9% NaCl水溶液)350mlを吸水性物品の液体透過性上部シート上に注入した。
前記各実施例および比較例で製造した25cm×10cm面積の吸水性物品に1000mlの蒸留水を注入して吸収させた。その後、蒸留水を吸収した吸水性物品を恒温・恒湿器(湿度:50%、温度:38.7℃)に12時間置いた。その後、吸水性物品の面積に対する重量増加による水蒸気バリア性透過度(g/m2・12hr)を下記式で計算した。
W1は、恒温恒湿処理前、蒸留水を吸収した吸水性物品の面積当たり重量(g/m2)であり、
W2は、恒温恒湿処理後、吸水性物品の面積当たり重量(g/m2)であり、
Tは、恒温恒湿処理時間であって、12hrである。)
通気度測定用試片は、通気性防水フィルム(坪量17g/m2、通気度4400g/m2・24hr、厚さ25μm)の一面に、各実施例および比較例で液体不透過性背面シートと通気性防水フィルムの間、または通気性防水フィルムと吸収体の間に適用された高吸水性樹脂フィルム、SAP fiber、または吸収体を130℃、20kgf/cmで熱接着して製造した。
11:液体不透過性背面シート
12:通気性防水フィルム
13:吸収体
14:液体透過性上部シート
20:高吸水性樹脂フィルム
Claims (10)
- 厚さが500μm以下であり、
KS F 2611標準によって測定された吸湿能が10~100g/m2である、高吸水性樹脂フィルム。 - 厚さが10~200μmである、請求項1に記載の高吸水性樹脂フィルム。
- 含水率が1~15%であり、引張強度が5~50MPaである、請求項1または2に記載の高吸水性樹脂フィルム。
- 液体不透過性背面シート;通気性防水フィルム;高吸水性樹脂粉末およびパルプを含む吸収体;および液体透過性上部シートを含む吸水性物品であって、
前記液体不透過性背面シートと通気性防水フィルムの間、および/または通気性防水フィルムと吸収体の間に請求項1から3のいずれか一項に記載の高吸水性樹脂フィルムを含む、吸水性物品。 - 前記高吸水性樹脂フィルムは、前記液体不透過性背面シートの一面;および/または前記通気性防水フィルムの一面または両面に貼り合わせられたものである、請求項4に記載の吸水性物品。
- 前記高吸水性樹脂フィルムは前記通気性防水フィルムの一面に貼り合わせられたものであり、
前記貼り合わせられた高吸水性樹脂フィルムと通気性防水フィルムの通気度は3000~5000g/m2・24hrである、請求項4に記載の吸水性物品。 - 前記液体不透過性背面シートは、気孔の大きさが20~1000μmである不織布である、請求項4から6のいずれか一項に記載の吸水性物品。
- 前記通気性防水フィルムは、通気度が2000~5000g/m2・24hrである、請求項4から7のいずれか一項に記載の吸水性物品。
- 前記吸収体は、高吸水性樹脂粉末を10~90重量%で含む、請求項4から8のいずれか一項に記載の吸水性物品。
- 前記液体透過性上部シートは、坪量が15~30g/m2である、請求項4から9のいずれか一項に記載の吸水性物品。
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PCT/KR2022/003866 WO2022203296A1 (ko) | 2021-03-26 | 2022-03-21 | 고흡수성 수지 필름 및 이를 포함하는 흡수성 물품 |
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2022
- 2022-03-21 WO PCT/KR2022/003866 patent/WO2022203296A1/ko unknown
- 2022-03-21 US US18/010,064 patent/US20230225916A1/en active Pending
- 2022-03-21 EP EP22775998.2A patent/EP4137110A4/en active Pending
- 2022-03-21 CN CN202280004785.2A patent/CN115697271A/zh active Pending
- 2022-03-21 JP JP2022573377A patent/JP2023528817A/ja active Pending
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Also Published As
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US20230225916A1 (en) | 2023-07-20 |
EP4137110A4 (en) | 2023-12-27 |
WO2022203296A1 (ko) | 2022-09-29 |
EP4137110A1 (en) | 2023-02-22 |
CN115697271A (zh) | 2023-02-03 |
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