JP6910297B2 - 少なくとも1つの弾性結合領域を含む使い捨て物品 - Google Patents
少なくとも1つの弾性結合領域を含む使い捨て物品 Download PDFInfo
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- JP6910297B2 JP6910297B2 JP2017533171A JP2017533171A JP6910297B2 JP 6910297 B2 JP6910297 B2 JP 6910297B2 JP 2017533171 A JP2017533171 A JP 2017533171A JP 2017533171 A JP2017533171 A JP 2017533171A JP 6910297 B2 JP6910297 B2 JP 6910297B2
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- B32B7/04—Interconnection of layers
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- B32B7/04—Interconnection of layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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Description
隣接した結合領域
使い捨て物品は少なくとも2つの結合領域を含み、前記少なくとも2つの領域を互いに隣接させることができる。隣接させることで、2つの結合領域が並置することを意味する。2つの隣接した結合領域は、互いにわずかに重なり合ってよい。隣接した結合領域のうち少なくとも1つは、弾性ホットメルト接着剤と結合する。第2領域は弾性ホットメルト接着剤と結合してよく、又は別の方法として第2ホットメルト接着剤と結合する。
異なる実施形態では、本発明は、層状結合領域を含む。本実施形態では、弾性ホットメルト接着剤は連続的なフィルムにて第1基材上に塗布されてよく、また次に第2ホットメルト接着剤は不連続方式にて弾性ホットメルト接着剤上部に直接塗布されてよい。第2ホットメルトは次に、第2基材を弾性ホットメルト接着剤に結合させて、4つの層(第1基材、弾性ホットメルト接着剤フィルム、第2ホットメルト接着剤の不連続コーティング、及び第2基材)を伴う複合材料を形成するために使用することができる。
基材の1つは不織布であってよい。任意の不織布を使用してよい。不織布は、1つ以上のポリマー(例えば、PET(ポリエチレンテレフタレート)、PBT(ポリブチレンテレフタレート)、ナイロン、ポリプロピレン及びポリエチレン)から製造される繊維、1つ以上の天然繊維(例えば、レーヨンセルロース、コットンセルロース、麻繊維及びビスコース)又はこれらの組み合わせを含有することができる。不織布は、例えばエアレイド、湿式、スパンボンド又はメルトブロウンを含む多数の異なる方法で形成することができる。繊維はカード加工されてよく(例えば梳き具に通す)、これにより繊維が特定の方向に配向される。例えば、水流交絡、化学結合、ニードルパンチ又は熱結合を含む任意の方法にて、ウェブを互いに結合させることができる。一実施形態では、不織布にはエアレイド加工、カード加工及び水流交絡されたポリプロピレン繊維及びポリエチレン繊維の混紡が含まれる。別の実施形態では、不織布は自己弾性であってよい。これは、弾性繊維を不織布に組み込むか、又は吸収弾性材を組み込んで弾性を向上させることによって達成される。本明細書に記載されたホットメルト接着剤は、弾性不織布とともに使用して、複合材料の弾性性能を増大させることが可能である。
弾性ホットメルト接着剤は、感圧(すなわち、室温で粘着性を示す)ホットメルト接着剤であってよい。弾性ホットメルト接着剤組成物は色が淡くてよく、また良好な熱安定性を有し得る。冷却フィルムにおいて、ホットメルト接着剤は透明、すなわち半透明であってもよく、又は別の方法としてはホットメルト接着剤は不透明であってもよい。弾性ホットメルト接着剤は、製造後に約3未満、あるいは約2未満の初期の溶融ガードナー色を有してよい。あるいは、弾性ホットメルト接着剤は例えばピンク、青、白、灰色などの不透明色に色素で着色されてよい。
弾性ホットメルト接着剤は、1つ以上のスチレンブロックコポリマーを含む。
弾性ホットメルト接着剤は、粘着付与剤を含む。粘着付与剤は、室温で流体又は固体であってよい。粘着付与剤の好適な部類としては、例えば、芳香族、脂肪族及び脂環式炭化水素樹脂、芳香族脂肪族混合系変性炭化水素樹脂、芳香族変性脂肪族炭化水素樹脂、及びその水素添加型、テルペン、変性テルペン及びその水素添加型、天然ロジン、変性ロジン、ロジンエステル、及びその水素添加型、低分子量ポリ乳酸、並びにこれらの組み合わせが挙げられる。有用な天然及び変性ロジンの例としては、ガムロジン、ウッドロジン、トール油ロジン、蒸留ロジン、水素添加ロジン、二量化ロジン及び重合ロジンが挙げられる。有用なロジンエステルの例としては、例えば、ペールウッドロジンのグリセロールエステル、水素添加ロジンのグリセロールエステル、重合ロジンのグリセロールエステル、天然及び変性ロジンのペンタエリスリトールエステル(ペールウッドロジンのペンタエリスリトールエステル、水素添加ロジンのペンタエリスリトールエステル、トール油ロジンのペンタエリスリトールエステル、及びロジンのフェノール変性ペンタエリスリトールエステルを含む)が挙げられる。
弾性ホットメルト接着剤組成物は、可塑剤を含んでよい。好適な可塑剤としては、例えば、ナフテン系オイル、パラフィン系オイル(例えば、シクロパラフィンオイル)、鉱油、フタル酸エステル、アジピン酸エステル、オレフィンオリゴマー(例えば、ポリプロピレンオリゴマー、ポリブテンオリゴマー、及び水素添加ポリイソプレンオリゴマー)、ポリブテン、ポリイソプレン、水素添加ポリイソプレン、ポリブタジエン、安息香酸エステル、動物油、植物油(例えば、ヒマシ油、大豆油(例えば、オレイン酸高含有大豆油))、オイル誘導体、脂肪酸グリセロールエステル、ポリエステル、ポリエーテル、乳酸誘導体及びこれらの組み合わせが挙げられる。
弾性ホットメルト接着剤組成物は、ワックスを含んでよい。有用なワックスの部類としては、例えば、パラフィンワックス、マイクロクリスタリンワックス、高密度低分子量ポリエチレンワックス、副生物ポリエチレンワックス、ポリプロピレンワックス、フィッシャー・トロプシュワックス、酸化フィッシャー・トロプシュワックス、酸、無水物、などの官能化ワックス、及び水酸基変性ワックス、動物性ワックス、植物性ワックス(例えば、大豆ワックス)及びその組み合わせが挙げられる。有用なワックスは室温で固体であり、かつ約50℃〜170℃の環球式軟化点を有することが好ましい。有用なワックスは、ウエストレイク・ケミカル社(テキサス州、ヒューストン)製の商標名EPOLENE N及びCシリーズ(例えば、EPOLENE N−21を含む)並びにクラリアントインターナショナル社(スイス、ムッテンツ)製の商標名LICOCENEシリーズ(例えば、TP LICOCENE PP 6102を含む)を含む、種々の供給者から市販されている。
弾性ホットメルト接着剤組成物は、例えば、発泡剤、安定剤、酸化防止剤、付加ポリマー(例えばオレフィン系ポリマー(例えばプロピレンホモポリマー、プロピレンコポリマー、エチレンホモポリマー、エチレンコポリマーなど、酸、無水物、及び水酸基変性ポリマーなどの官能化ポリマー、非晶質ポリ−αオレフィン、ポリエチレンコポリマー)、接着促進剤、紫外線光安定剤、腐食防止剤、臭気吸収剤/中和剤、着色剤(例えば、顔料(例えば、二酸化チタン、カーボンブラック、及びこれらの混合物)、並びに染料)、香料、充填剤(例えば、ナノ粒子、炭酸カルシウム、粘土、タルク、ヒュームドシリカ)、界面活性剤、湿り度インジケータ、超吸収体、押し出し被覆、加工助剤及びこれらの組み合わせを含む追加の成分を任意に含むが、これらに限定されない。
本発明の結合領域は、パーソナルケア衣類、外科用衣類及び産業労働者用衣類を含む、任意の好適な使い捨て物品中へ組み込むことができる。
本発明の結合領域は、レッグカフ、腰部分、腹部バンド、サイドパネル及び固定タブ/耳部を含む、使い捨て吸収性物品の多くの領域に弾性をもたせるのに有用である。本発明の弾性複合材料は、更に、使い捨て物品の任意の部分、あるいは使い捨て物品全体に弾性をもたせるために使用してよい。
本発明の隣接した結合領域は、使い捨て吸収性物品の固定タブ/耳部に弾性をもたせるのに有用である。
本発明の隣接した結合領域は、体液を吸収できる一方で、綿の感触及び伸縮性を有する吸収性下着の作製において有用であり得る。一実施形態では(図3)、吸収性下着(5)は、吸収性物品全体にわたる縦縞模様中に存在する隣接した結合領域、第2結合領域(9)と交互する弾性領域(7)を含む。これらの縦縞は、より細かい縦縞状であってよい。あるいは、縦縞はより幅広であってよい。個々の縞は、幅が同一でも異なっていてもよい。縦縞は、約1mm〜約100mm、約1mm〜約50mm、あるいは約2〜25mmの幅を有してもよい。
本実施例においてかつ本明細書の全体にわたり用いられた試験手順は、特に明記されない限り、以下のものを含む。
粘度は、ブルックフィールド熱硬化性樹脂粘度計モデルRVDV 2及び27番スピンドルを使用して、ASTM D−3236、表題:「接着剤及びコーティング材料の見かけ粘度のための標準試験法」(1988年10月31日)に従い決定される。結果はセンチポアズ(cps)で報告されている。
ホットメルト接着剤(溶融状態)を試験して、ASTM D−1544に記述されているガードナー色数に対するサンプルの色を比較することより、溶融ガードナー色を測定する。パシフィックサイエンティフィック社(メリーランド州、ベセスダ)から入手可能な、光照射器を装備したガードナーデルタコンパレータ(Gardner Delta Comparator)を使用して、比較がなされる。
177℃(350°F)の塗布温度、10.5ニュートン/センチメートル(N/cms)(ライナーインチ(PLI)当たり6ポンド)のニップ圧力、及び少なくとも6.1メートル/分(m/min)(20フィート/分)の試験速度にて、弾性ホットメルト接着剤組成物を2つの不織布*基材間に連続的にスロットコーティングすることにより、試験用積層を作製した。重量100グラム毎平方メートル(gsm)の接着剤塗布をもって積層を作製し、かつ接着剤の幅は少なくとも7.6センチメートル(3インチ)であった。試験のために少なくとも1.5メートル(60インチ)の標本積層が収集されるよう、十分な量の積層を作製した。
*使用される不織布はカード加工され、水流交絡され、かつ50/50(PET/PP)を含む。不織布は、29グラム/平方メートルの坪量、9.1kPa(93グラム/平方センチメートル(600グラム/平方インチ))の横断方向引張り強度、CD破断点伸び=217% WSP方法110.4、及び伸び比(CD/MD)=4.3を有する。
上記の試験用積層作製方法に従って、2つの基材間に弾性ホットメルト接着剤をコーティングすることにより、実験用積層を作製した。毎分25.4センチメートル(毎分10インチ)に代えて毎分30.5センチメートル(毎分12インチ)の速度で10分間にわたって試験を実施し、かつASTM D1876で指定された10反復に代えて7反復で実施するという点を除いて、ASTM D1876−01表題:「接着剤の剥離抵抗測定のための試験方法(T−剥離試験方法)」を使用して剥離力を測定する。インストロン(INSTRON)型試験用計測器でサンプルを試験する。試験用サンプルは、幅方向に2.54センチメートル(1インチ)であり、かつ長さ方向に少なくとも10.16センチメートル(4インチ)である。10秒を超える剥離の平均剥離力を記録し、またその結果はグラムにて報告されている。積層を作製後、少なくとも24時間初期の剥離力を測定する。
上記の試験用積層作製方法に従って、2つの基材間に弾性ホットメルト接着剤をコーティングすることにより、実験用積層を作製した。幅方向に2.54センチメートル(1インチ)かつ長さ方向に少なくとも8センチメートル(3インチ)にて、ウェブに交差する方向で積層を切断することにより試験用サンプルを作製した。不織布積層体を作製後、少なくとも24時間試験を実施する。
8mm板の平行板ジオメトリーを使用して、テキサスインスツルメンツ社(Texas Instruments)社製AR−G2レオメーターにて、粘弾性クリープ及び粘弾性回復を試験した。300umのギャップを伴い、38℃で、等温にて試験を実施した。
Claims (12)
- 少なくとも2つの隣接した結合領域を含む使い捨て物品であって、
前記第1結合領域が、
第1及び第2基材と、並びに
前記第1及び第2基材との間にあることにより前記第1及び第2基材を互いに結合させる弾性ホットメルト接着剤組成物と、
を含み、
前記弾性ホットメルト接着剤組成物は350°Fで約15,000cps未満の粘度を有し、かつ約20%以下のヒステリシス50%後硬化を備え、
前記第2結合領域が、
第1及び第2基材と、並びに
前記第1及び第2基材との間にあることにより前記第1及び第2基材を互いに結合させるホットメルト接着剤組成物と、
を含み、
前記第2結合領域は第1結合領域とは異なる性質を有する、使い捨て物品。 - 前記少なくとも2つの隣接した結合領域が、異なる塗布重量にて塗布された同一の前記弾性ホットメルト接着剤を含む、請求項1に記載の使い捨て物品。
- 前記第2結合領域が、弾性ホットメルト接着剤組成物とは異なる第2ホットメルト接着剤組成物を含む、請求項1に記載の使い捨て物品。
- 前記基材の少なくとも1つが不織布である、請求項1に記載の使い捨て物品。
- 前記不織布が、ウェブの幅方向に100%を超えて伸張性である、請求項4に記載の使い捨て物品。
- 少なくとも2つの隣接した結合領域が、固定耳部、腰部、腹部バンド及びサイドパネルからなる群から選択される用途に使用される、請求項1に記載の使い捨て物品。
- 3つの隣接した結合領域が前記固定耳部を構成し、前記3つの隣接した結合領域が、2つの第2結合領域の間にある弾性を有する第1結合領域を含む、請求項6に記載の使い捨て物品。
- おむつ、吸収性下着、女性用衛生製品及び医療用包帯からなる群から選択される、請求項1に記載の使い捨て物品。
- 吸収性下着全体にわたる隣接した結合領域を含み、前記隣接した結合領域が第2結合領域と交互する弾性を有する第1結合領域を含む、請求項8に記載の吸収性下着。
- 前記弾性ホットメルト接着剤組成物が、
約30重量%〜約60重量%の1つ以上のスチレンブロックコポリマーであって、少なくとも約30重量%の平均スチレン含有量及び約20以上の平均MFR(200℃/5kg)を有するスチレンブロックコポリマーと、
約10重量%を超える可塑剤と、
粘着付与剤と、を含む、請求項1に記載の使い捨て物品。 - 少なくとも1つの前記ホットメルト接着剤が、スロットコーティング及び非接触コーティングからなる群から選択される塗布方法を使用して前記基材に塗布される、請求項1に記載の使い捨て物品。
- 前記2つの異なるホットメルト接着剤が、2つの異なる塗布方法を使用して前記基材に塗布される、請求項3に記載の使い捨て物品。
Applications Claiming Priority (7)
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US201562171129P | 2015-06-04 | 2015-06-04 | |
US62/171,129 | 2015-06-04 | ||
PCT/US2015/049186 WO2016040483A1 (en) | 2014-09-09 | 2015-09-09 | A disposable article including at least one elastic bonded region |
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JP2017534413A JP2017534413A (ja) | 2017-11-24 |
JP2017534413A5 JP2017534413A5 (ja) | 2018-10-18 |
JP6910297B2 true JP6910297B2 (ja) | 2021-07-28 |
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JP2017533173A Pending JP2017529210A (ja) | 2014-09-09 | 2015-09-09 | 使い捨て衣類 |
JP2017513060A Active JP6707529B2 (ja) | 2014-09-09 | 2015-09-09 | 弾性ホットメルト接着剤組成物及びそれと共に製造される弾性複合材料 |
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WO2016040483A1 (en) | 2016-03-17 |
CN106687082B (zh) | 2021-03-09 |
EP3191045A1 (en) | 2017-07-19 |
MX369599B (es) | 2019-11-13 |
US20160068721A1 (en) | 2016-03-10 |
US10265225B2 (en) | 2019-04-23 |
MX2017002984A (es) | 2017-09-01 |
JP2017534481A (ja) | 2017-11-24 |
JP2017534413A (ja) | 2017-11-24 |
EP3191044A1 (en) | 2017-07-19 |
ZA201700966B (en) | 2019-07-31 |
KR20170051432A (ko) | 2017-05-11 |
US20160067117A1 (en) | 2016-03-10 |
US20160067116A1 (en) | 2016-03-10 |
JP2017529210A (ja) | 2017-10-05 |
CN106794093A (zh) | 2017-05-31 |
MX2017002983A (es) | 2017-05-30 |
WO2016040495A1 (en) | 2016-03-17 |
MX2017002982A (es) | 2017-05-30 |
CN107072827A (zh) | 2017-08-18 |
KR20170052579A (ko) | 2017-05-12 |
WO2016040474A1 (en) | 2016-03-17 |
EP3191044B1 (en) | 2019-11-06 |
CO2017002335A2 (es) | 2017-06-09 |
JP6707529B2 (ja) | 2020-06-10 |
MX369600B (es) | 2019-11-13 |
ZA201700967B (en) | 2019-06-26 |
CN106687082A (zh) | 2017-05-17 |
EP3191045B1 (en) | 2019-11-06 |
CO2017002333A2 (es) | 2017-06-20 |
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