JP2022528404A - 吸収性物品の流体管理層 - Google Patents
吸収性物品の流体管理層 Download PDFInfo
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- JP2022528404A JP2022528404A JP2021558629A JP2021558629A JP2022528404A JP 2022528404 A JP2022528404 A JP 2022528404A JP 2021558629 A JP2021558629 A JP 2021558629A JP 2021558629 A JP2021558629 A JP 2021558629A JP 2022528404 A JP2022528404 A JP 2022528404A
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- A—HUMAN NECESSITIES
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- A—HUMAN NECESSITIES
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- A—HUMAN NECESSITIES
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- 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
- A61F2013/530583—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 characterized by the form
- A61F2013/530613—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 characterized by the form in fibres
- A61F2013/53062—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 characterized by the form in fibres being made into a paper or non-woven
-
- 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
- A61F13/537—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 characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F2013/53791—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 characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer being resilient or elastic
-
- 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
- A61F13/84—Accessories, not otherwise provided for, for absorbent pads
- A61F2013/8402—Accessories, not otherwise provided for, for absorbent pads including disposal means
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Abstract
Description
再び図1A及び1Bを参照すると、前述のように、本開示の使い捨て吸収性物品は、トップシート20及びバックシート50を含むことができる。それらの間には、流体管理層30及び吸収性コア40を挟み込むことができる。更なる層を、トップシート20とバックシート50との間に配置してもよい。
厚さ
試験片の厚さ又は厚さは、試料が載置される基準プラットフォームと、特定の時間にわたって試料上に特定の量の圧力をかける押さえと、の間の距離として測定される。全ての測定は、23℃±2℃及び相対湿度50%±2%で維持された実験室で実施され、試験片は、試験前に少なくとも2時間、この環境で調整される。
厚さ係数は、前述したように、サンプルの坪量10gsm当たりの厚さである。したがって、式は、厚さ/(坪量/10)である。
試験試料の坪量は、単一の材料層の単位面積(平方メートル単位)当たりの質量(グラム単位)であり、公定法WSP130.1に従って測定される。試験試料の塊を既知の面積に切断し、0.0001グラムの精度の分析天秤を用いて試料の質量を測定する。すべての測定は、23℃±2℃及び相対湿度50%±2%で維持された実験室で実施され、試験試料は、試験前に少なくとも2時間、この環境で調整される。
複数の繊維タイプの混合物を含む試験片の定量的化学組成をISO1833-1を用いて決定する。すべての測定は、23℃±2℃及び相対湿度50%±2%に維持された実験室内で実施する。
織物ウェブ(例えば、織布、不織布、エアレイド)は、材料の個別の繊維から構成されている。繊維を、デシテックス単位で報告された線質量密度を単位として測定する。デシテックス値は、10000メートルの繊維中に存在するその繊維の質量をグラム単位で表したものである。材料ウェブ中の繊維のデシテックス値は、多くの場合、仕様の一部として製造業者によって報告されている。繊維のデシテックス値が既知でない場合、走査電子顕微鏡法(SEM)などの好適な顕微鏡法によって繊維の断面積を測定し、FT-IR(フーリエ変換赤外線)分光法及び/又はDSC(動的走査熱量測定)などの好適な方法を用いて繊維の組成を決定した後、組成物の密度についての文献の値を用いて10000メートルの繊維中に存在する繊維の質量をグラム単位で計算することによって計算することができる。すべての試験は、23℃±2.0℃の温度及び50%±2%の相対湿度に維持された室内で実施され、試料は、試験前に少なくとも2時間、同じ環境条件下で調整される。
式中、dkの単位は(計算された長さ10000メートル当たりの)グラム数であり、akの単位はμm2であり、ρkの単位はグラム/立方センチメートル(g/cm3)である。デシテックスは、繊維タイプ(例えば、PP、PET、セルロース、PP/PET2成分)と共に0.1g単位(計算された長さ10000メートル当たり)で報告する。
動的機械分析器(Dynamic Mechanical Analyzer、DMA)を使用して、個々の材料又は吸収性物品の一部分から得られた試験片の圧縮抵抗及び回復特性を測定する。好適な器具は、直径40mmの圧縮プレートを備えたDMA Q800(TA Instruments(New Castle,Delaware)から入手可能)、又は同等物である。試験片は、応力の制御された変化を伴う一連の軸方向圧縮力傾斜に曝露され、結果として生じる変位の変化が測定される。全ての試験は、23℃±3℃及び50%±2%の相対湿度に制御された室内で行う。
染み透り時間は、公定法WSP70.3に従って染み透りプレート及び電子回路インターバルタイマーを使用して、既知の体積の試験液で汚された試験サンプルについて測定する。試験液が試験サンプルを通過するのに必要な時間を記録する。すべての測定は、23℃±2℃及び相対湿度50%±2%で維持された実験室で実施され、試験試料は、試験前に少なくとも2時間、この環境で調整される。
湿潤CD可撓性は、コンピュータインターフェースを有する延伸引張試験機の、水平方向に向いた一定速度での周期的圧縮試験を使用した、本明細書に記載されるような既知の体積の製紙工業流体(Paper Industry Fluid、PIF)を充たした吸収性物品から取り出された個々の材料層を変形させるのに必要な力の尺度である。試験は、7サイクルの荷重印加及び荷重除去からなり、平均ヒステリシス面積(可撓性)、平均初期勾配(初期剛性)、及び、最後の3サイクルにわたる、力対変位曲線の平均全勾配(総剛性)を計算する。全ての試験は、23℃±3℃及び50%±2%の相対湿度に制御された部屋にて行われる。
製紙工業流体(PIF)は、広く受け入れられている、無害で非血液系のヒト経血代理流体である。PIFは、塩化ナトリウム、カルボキシメチルセルロース、グリセロール、及び重炭酸ナトリウムからなる水性混合物であり、表面張力は、非イオン性界面活性剤の添加により調整される。この標準的な試験流体は、生理製品の製造業者のフランス工業グループ(Groupment Francaise de producteurs d’articles pour usage sanitaires et domestiques)の技術委員会によって開発され、1994年9月のAFNOR標準、Normilization francaise Q34-018に記載されている。適切に調製された場合、PIFは、23℃±1℃の温度で11±1センチポアズの粘度、50±2mN/mの表面張力、及び8±1のpH値を有する。
本明細書で提供されるMD曲げ長さの測定値を、Worldwide Strategic Partners(WSP)試験法90.1を使用することによって得た。
Claims (15)
- 約40グラム/平方メートル(gsm)~約75gsmの坪量を有する、一体化されカード処理された不織布を含み、かつ材料組成分析法によって測定されたときに、複数の吸収性繊維と、複数の剛化繊維と、複数の弾性繊維と、を含み、かつ動的機械分析法によって測定されたときに段階1と段階2との間で少なくとも0.60mmの圧縮距離を有する、流体管理層。
- 前記流体管理層が、段階1と段階2との間で、約0.60mm~約1.4mm、より好ましくは約0.7mm~約1.4mm、又は最も好ましくは約0.8mm~約1.4mmの圧縮距離を有する、請求項1に記載の流体管理層。
- 前記流体管理層が、動的機械分析法によって測定されたときに、段階3と4との間、5と6との間、7と8との間、又は9と10との間で、約0.30mm~約1.0mm、より好ましくは約0.40mm~約0.8mm、又は最も好ましくは約0.45mm~約0.7mmの圧縮距離を有する、請求項1又は2に記載の流体管理層。
- 動的機械分析の段階1での厚さが、少なくとも0.9mm、より好ましくは約1.2mm超、又は最も好ましくは約1.5mm超である、請求項1~3のいずれか一項に記載の流体管理層。
- 前記流体管理層が、8kPaで約0.45mm~約0.9mm、より好ましくは8kPaで約0.50mm~約0.8mm、又は最も好ましくは8kPaで約0.55mm~約0.75mmの動的機械分析法の段階2~10での厚さを有する、請求項1~4のいずれか一項に記載の流体管理層。
- 前記流体管理層が、0.2kPaで約0.65mm~約1.50mm、より好ましくは0.2kPaで約0.75mm~約1.40mm、又は最も好ましくは0.2kPaで約0.8mm~約1.20mmの動的機械分析法の段階3、5、7、及び9のいずれかでの厚さを有する、請求項1~5のいずれか一項に記載の流体管理層。
- 前記流体管理層が、液体染み透り時間試験法に従って測定されたときに、約10秒未満、より好ましくは約8秒未満、又は最も好ましくは約7秒未満の捕捉速度を有する、請求項1~6のいずれか一項に記載の流体管理層。
- 前記流体管理層が、液体染み透り時間試験法に従って測定されたときに、約5秒~約10秒、より好ましくは約5秒~約9秒、又は最も好ましくは約5秒~約8秒の範囲の捕捉時間を有する、請求項1~7のいずれか一項に記載の流体管理層。
- 前記流体管理層が、厚さ係数法によって測定されたときに、約0.13mm~約0.3mm、又はより好ましくは約0.15mm~約0.25mmの厚さ係数を有する、請求項1~8のいずれか一項に記載の流体管理層。
- 前記吸収性繊維が、材料組成分析法によって測定されたときに、約10重量%~約60重量%、より好ましくは15重量%~約50重量%、又は最も好ましくは約20重量%~約40重量%の量で存在する、請求項1~9のいずれか一項に記載の流体管理層。
- 前記弾性繊維が、材料組成分析法によって測定されたときに、約15重量%~約70重量%、より好ましくは約20重量%~約60重量%、又は最も好ましくは約25重量%~約50重量%の量で存在する、請求項1~10のいずれか一項に記載の流体管理層。
- 前記剛化繊維が、材料組成分析法によって測定されたときに、約25重量%~約70重量%、より好ましくは約30重量%~約60重量%、又は最も好ましくは約40重量%~約55重量%の量で存在する、請求項1~11のいずれか一項に記載の流体管理層。
- 前記弾性繊維が、繊維デシテックス法によって測定されたときに、約4dtex~約15dtex、より好ましくは約5dtex~約12dtex、又は最も好ましくは約6dtex~約10dtexの線密度を有する、請求項1~12のいずれか一項に記載の流体管理層。
- 前記剛化繊維が、繊維デシテックス法によって測定されたときに、約1.0dtex~約6dtex、より好ましくは約1.5dtex~約5dtex、又は最も好ましくは約2.0dtex~約4dtexの線密度を有する、請求項1~13のいずれか一項に記載の流体管理層。
- 前記流体管理層が、スパンレース不織布である、請求項1~14のいずれか一項に記載の流体管理層。
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