JP2007509694A - 延伸可能な吸収性物品 - Google Patents
延伸可能な吸収性物品 Download PDFInfo
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Abstract
【解決手段】延伸可能な基体と、延伸可能な基体に接触した粘着性組成物の層を含む吸収性複合体とを有する吸収性物品。粒子状超吸収性材料の層が粘着性組成物に付加され、かつそれによって保持される。吸収性複合体は、粘着性組成物によって基体に固定される。延伸可能な基体は、「伸長及び回復試験」によって判断した時に物品の横方向及び縦方向の少なくとも一方における回復を有し、吸収性物品は、「伸長及び回復試験」によって判断した時に、横方向及び縦方向の少なくとも一方における基体の回復の少なくとも約60パーセントである横方向及び縦方向の少なくとも一方における回復を有する。
【選択図】図4
Description
本明細書の関連においては、以下の各用語又は語句は、以下の1つ又は複数の意味を含む。
上述で「HX 4207−01」、「HX 2773−01」、及び「34−5610」と特定したホットメルト接着剤に、250、275、300、325、及び350°F(それぞれ、121、135、149、163、及び177℃)の温度で、本明細書で後に説明する「粘性試験」を行い、粘着性組成物の粘性(センチポアズ(cps))を判断した。「粘性試験」の結果は、次のようであった。
上述で「HX 4207−01」、「HX 2773−01」、「H2525A」、「34−5610」、及び「34−447A」と特定されたホットメルト接着剤に本明細書の後に説明する「流動試験」を25℃で行い、各粘着性組成物に対するストレージ係数(G’)(ダイン/平方センチメートル)、ガラス転移温度(Tg)(℃)を判断した。「流動試験」の結果を以下に示す。
上述の実施例1、実施例2、及び実施例3で形成したウェブから切断したサンプルの様々な伸長及び回復特性を判断し、これらの特性をこれらの実施例の各ウェブを形成するのに用いたそれぞれの基体に関する伸長及び回復特性と比較するための実験が行われた。実施例1、実施例2、及び実施例3に関して形成されたウェブから3インチ幅のサンプルを切断し、これに対して本明細書で後に説明する「伸長及び回復試験」を行い、1)各横方向及び縦方向におけるその40パーセント伸長でのサンプルの正規化荷重値(例えば、本明細書では別に張力とも呼ばれる)、2)各横方向及び縦方向におけるその100パーセント伸長でのサンプルの正規化荷重値、及び3)各横方向及び縦方向へ伸長した後のサンプルの永久歪み及び回復が判断された。
実施例3のウェブと実質的に同じであるが、ウェブを形成する各基体が米国ウィスコンシン州ニーナー所在の「Cellu−Tissue」から入手可能な延伸不能ティッシュ材料と置換された連続ウェブが作られた。このティッシュ材料の坪量は18gsmである。ウェブの幅は、実施例3のウェブと同じように約7インチ(17.8cm)に形成された。超吸収性材料の坪量が約388gsmであり、粘着性組成物の総坪量が約25gsmであるために、ウェブ(例えば、ティッシュ材料の2つの層を含むもの)の総坪量は約449gsmであった。この比較例によるウェブは、破断することなしに約5パーセントを超える引張伸長を支持しなかった。
実施例3のウェブと実質的に同じであるが、基体が片側をシリコンで被覆した取外し可能(例えば、非付着性)紙と置換された連続ウェブが作られた。吸収性複合体を剥離紙の層の間に配置した後に、吸収性複合体の両側から紙を除去した。超吸収性材料の坪量が約388gsmであり、粘着性組成物の坪量が約25gsmであったために、吸収性複合体の総坪量は約413gsmであった。この比較例に従って作られた吸収性複合体は、破断することなしに約5パーセントを超える引張伸長を支持しなかった。
「ホットメルト接着剤及びコーティング材料の見掛け粘性のための標準試験方法」という名称の「ASTM試験方法D3236−88」に従って「粘性試験」が行われ、その全開示内容は、以下のパラメータを用いて本明細書において引用により組み込まれている。用いる粘性計は、米国マサチューセッツ州ミドルボロ所在の「Brookfield Engineering Laboratories」により型番「RVDV III」として作られたものである。「ASTM試験方法」を行う際に用いるスピンドル番号は「SC4−27」である。サンプルの大きさは、約10.5グラムの接着剤とすべきである。スピンドル速度(rpm)は、20パーセント〜80パーセントの範囲のトルク読取値をもたらす値に設定される。読取値は、約15分間にわたって又は粘性値が安定するまで数分毎に取る必要があり、その後、最終粘性読取値(センチポアズ)を記録する。
本明細書で説明する「流動試験」を用いて、ホットメルト接着剤のストレージ係数及びガラス転移温度を判断される。「流動試験」は、一般的に「プラスチックのための標準試験方法:動的機械的特性溶融流動学」という名称の「ASTM試験方法D4440−01」に従って行われ、その全開示内容は、本明細書と一致する範囲で本明細書において引用により組み込まれている。
温度制御は液体窒素の使用に関するものに設定する。
幾何学的配置は8mmプレートに設定する。
読取試験固定間隙:「オン」
試験モード:動的温度傾斜
周波数:6.28ラジアン/秒
傾斜率:3度/分
初期温度:−20℃
最終温度:100℃
歪み:0.5パーセント
時間/測定:5秒
自動張力調節:「オン」
初期静力:300グラム
自動張力感度:300グラム
「伸長及び回復試験」は、吸収性物品、より詳細には、1つ又はそれよりも多くの基体又は他の構成要素に固定された吸収性複合体を含む試験試料の伸長及び回復特性を測定するのに用いられる3サイクルの伸長及び回復試験である。特に、この「試験」を用いて、吸収性複合体の基体への固定がその伸長及び回復特性に関して、もしあれば、どのような影響があるかを判断することができる。「試験」は、特定の量の歪み(例えば、特定の伸長まで伸長された)の下に置かれた試験サンプルの荷重値を測定する。このような荷重値は、「試験」の伸長及び回復段階の両方の実行中及び3サイクルの各々の実行中に判断される。各試験サンプルの回復は、回復段階中に荷重値が3.3グラム重(gf)/サンプル幅インチまで低下した後の永久的な伸長の程度により判断される。「試験」は、試料(例えば、基体に固定された吸収性複合体)、並びに吸収性複合体から独立した基体に対して行われ、結果が比較される。
試験試料の6つのサンプル、すなわち、完全な試料の3つのサンプル及び試料の吸収性複合体から独立した(例えば、それから分離した)基体の3つのサンプルに「伸長及び回復試験」を行う必要があり、3つのサンプルの各組に対する結果を平均すべきである。各サンプルは、約3インチ(76mm)幅×少なくとも5インチ(127mm)長さ、より好ましくは、少なくとも6インチ(152mm)長さとすべきである。試料を幅が3インチよりも大きな製造物品から取る場合には、サンプルは、試料の中線から切断する必要がある、すなわち、物品の幅方向縁を含むサンプルを避け、縁の影響によって試験に矛盾した結果を引き起こす危険性を低減する必要がある。
以下の試験装置及び材料を用いて「伸長及び回復試験」を行う。
73±2°F(約23℃)及び相対湿度50±2パーセントのようなサンプル試験に妥当な周囲条件を用いる必要がある。サンプルが実質的に異なる条件に保存されている場合には、サンプルが実験室条件と平衡になった後に測定すべきである。
破断感度:60%
破断閾値:200グラム重
データ収集速度:100Hz
予備荷重?:なし
スローダウン伸張:0mm
試験速度:508ミリメートル/分
最大目盛荷重:10,000グラム重
ゲージ長さ:4インチ(102mm)
サイクル数:3
各作業セッションの開始時に「TESTWORKS」ソフトウエアを用いてロードセルを較正する。クロスヘッド位置のための張力フレーム押しボタン制御装置を用いて、グリップを移動させてゲージ長さ(グリップ間の距離)を4インチ(102mm)にする。ソフトウエアをこの初期ゲージ長さに較正する。試験するサンプルは、それがグリップ間の中心に置かれ、各グリップ内で中心位置に保持され、例えばサンプルの垂直な(例えば、側面の)縁部をグリップ面に直角にして正しい方向に向けられる(例えば、幅方向寸法がグリップ間の長さに対して横方向に延びる)ように縦方向に置かれる。サンプル上のグリップを閉じ、サンプルを張力下に置くことなくサンプルの弛みを最小にするようにサンプルを保持する。
((最後の回復サイクルで達成された荷重値3.3グラム重/サンプル幅インチの時のゲージ長さ−開始長さ)/(開始ゲージ長さ))×100
(完全試料のパーセント回復を基体のパーセント回復で割ったもの)×100
44 吸収性複合体
202 粘着性組成物の層
204 粒子状超吸収性材料の層
Claims (20)
- 延伸可能な基体と、
前記延伸可能な基体に接触した粘着性組成物の層と、該粘着性組成物に付加され、かつそれによって保持された粒子状超吸収性材料の層とを含み、該粘着性組成物によって該基体に固定された吸収性複合体と、
を含むことを特徴とする吸収性物品。 - 前記延伸可能な基体は、第1の延伸可能な基体であり、
前記第1の延伸可能な基体とほぼ重なる関係の第2の延伸可能な基体を更に含み、それによって前記吸収性複合体が、前記第1及び第2の延伸可能な基体の間に配置されている、
ことを特徴とする請求項1に記載の吸収性物品。 - 前記粘着性組成物の層は、粘着性組成物の第1の層であり、
前記粒子状超吸収性材料の層に付加された粘着性組成物の第2の層、
を更に含むことを特徴とする請求項1に記載の吸収性物品。 - 前記吸収性複合体は、幅及び長さを有し、該吸収性複合体の該幅及び該長さの少なくとも一方の少なくとも一部分にわたって不均一な坪量を有することを特徴とする請求項1に記載の吸収性物品。
- 前記延伸可能な基体は、弾性であることを特徴とする請求項1に記載の吸収性物品。
- 前記粘着性組成物の層は、粘着性組成物の第1の層であり、前記粒子状超吸収性材料の層は、粒子状超吸収性材料の第1の層であり、
前記粒子状超吸収性材料の第1の層に付加された粘着性組成物の第2の層を更に含み、粒子状超吸収性材料の第2の層が、該粘着性組成物の第2の層に付加され、かつそれによって保持されている、
ことを特徴とする請求項1に記載の吸収性物品。 - 縦方向及び横方向を有し、
前記基体は、「伸長及び回復試験」によって判断した時に吸収性物品の前記横方向及び前記縦方向の少なくとも一方における回復を有し、
吸収性物品は、前記「伸長及び回復試験」によって判断した時に、前記横方向及び前記縦方向の前記少なくとも一方における前記基体の前記回復の少なくとも約60パーセントである該横方向及び該縦方向の該少なくとも一方における回復を有する、
ことを特徴とする請求項1に記載の吸収性物品。 - 吸収性物品のための吸収性複合体であって、
粘着性組成物及び該粘着性組成物によって保持された粒子状超吸収性材料を含み、
前記粘着性組成物は、約400°F(約204℃)に等しいか又はそれよりも低い温度での約10,000センチポアズよりも小さい粘性と、25℃での約1.0×107ダイン/平方センチメートルに等しいか又はそれよりも小さいストレージ係数(G’)とを有する、
ことを特徴とする吸収性複合体。 - 延伸可能な基体と組み合わせて、前記粘着性組成物によって該基体に固定されていることを特徴とする請求項8に記載の吸収性複合体。
- 前記延伸可能な基体とほぼ重なる関係の第2の基体を更に含み、それによって吸収性複合体が、該延伸可能な基体と該第2の基体の間に配置されることを特徴とする請求項9に記載の組合せ。
- 幅及び長さを有し、吸収性複合体の該幅及び該長さの少なくとも一方の少なくとも一部分にわたって不均一な坪量を有することを特徴とする請求項8に記載の吸収性複合体。
- 前記基体は、吸収性物品の外側カバーを形成し、該吸収性物品は、該外側カバーとほぼ重なる関係にあって着用者の皮膚と隣接する関係になった液体透過性ライナを更に含み、吸収性複合体は、該ライナと該外側カバーの間に配置されていることを特徴とする請求項9に記載の組合せ。
- 吸収性複合体及び基体は、縦方向及び横方向を有する吸収性物品を一緒に形成し、
前記基体は、「伸長及び回復試験」によって判断した時に前記物品の前記横方向及び前記縦方向の少なくとも一方における回復を有し、
前記吸収性物品は、前記「伸長及び回復試験」によって判断した時に、前記横方向及び前記縦方向の前記少なくとも一方における前記基体の前記回復の少なくとも約60パーセントである該横方向及び該縦方向の該少なくとも一方における回復を有する、
ことを特徴とする請求項9に記載の組合せ。 - 少なくとも一部分が使用中に延伸可能である吸収性物品を製造する方法であって、
粘着性組成物の層を延伸可能な基体に付加する段階と、
前記粘着性組成物を前記延伸可能な基体に付加した後に、粒子状超吸収性材料の層を該粘着性組成物に付加する段階と、
を含むことを特徴とする方法。 - 前記基体に付加した前記粘着性組成物の層に前記粒子状超吸収性材料の層を付加した後に、粘着性組成物の第2の層を該粒子状超吸収性材料の層に付加する段階、
を更に含むことを特徴とする請求項14に記載の方法。 - 前記延伸可能な基体は、第1の基体であり、
第2の基体を前記第1の基体に重なる関係で、かつ該第2の基体を前記粘着性組成物の第2の層に固定するためにそれと接触するように位置決めする段階、
を更に含むことを特徴とする請求項15に記載の方法。 - 前記基体は、第1の基体であり、
前記第1の基体に重なる関係で、かつ前記粒子状超吸収性材料の層に接触するように第2の基体を位置決めする段階と、
前記第2の基体を前記第1の基体に固定する段階と、
を更に含むことを特徴とする請求項14に記載の方法。 - 少なくとも一部分が使用中に延伸可能である吸収性物品を製造する方法であって、
粘着性組成物と超吸収性材料との混合物を形成する段階と、
前記混合物を延伸可能な基体に付加し、それによって前記粘着性組成物が前記超吸収性材料を該基体上に保持する段階と、
を含むことを特徴とする方法。 - 前記延伸可能な基体は、第1の基体であり、
第2の基体を前記第1の基体と重なる関係で、かつ該第2の基体を前記粘着性組成物と超吸収性材料との混合物に固定するために該混合物に接触するように位置決めする段階、
を更に含むことを特徴とする請求項18に記載の方法。 - 延伸可能な基体と、
粘着性組成物と該粘着性組成物によって保持された粒子状超吸収性材料とを含み、該粘着性組成物によって前記延伸可能な基体に固定された吸収性複合体と、
を含み、
縦方向及び横方向を有し、
前記延伸可能な基体は、「伸長及び回復試験」によって判断した時に吸収性物品の前記横方向及び前記縦方向の少なくとも一方における回復を有し、
吸収性物品は、前記「伸長及び回復試験」によって判断した時に、前記横方向及び前記縦方向の前記少なくとも一方における前記基体の前記回復の少なくとも約60パーセントである該横方向及び該縦方向の該少なくとも一方における回復を有する、
ことを特徴とする吸収性物品。
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US10/699,193 US7872168B2 (en) | 2003-10-31 | 2003-10-31 | Stretchable absorbent article |
PCT/US2004/013184 WO2005044163A1 (en) | 2003-10-31 | 2004-04-28 | Stretchable absorbent article |
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- 2004-04-28 MX MXPA06004184A patent/MXPA06004184A/es active IP Right Grant
- 2004-04-28 JP JP2006537954A patent/JP2007509694A/ja active Pending
- 2004-04-28 KR KR1020067007166A patent/KR101200174B1/ko active IP Right Grant
- 2004-04-28 EP EP04818285.1A patent/EP1677721B1/en not_active Expired - Fee Related
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JP2020033486A (ja) * | 2018-08-31 | 2020-03-05 | 株式会社ネオス | 塗料組成物及び塗膜ならびに物品 |
JP7266979B2 (ja) | 2018-08-31 | 2023-05-01 | 株式会社ネオス | 塗料組成物及び塗膜ならびに物品 |
Also Published As
Publication number | Publication date |
---|---|
EP1677721B1 (en) | 2018-10-17 |
US20110112498A1 (en) | 2011-05-12 |
US8852381B2 (en) | 2014-10-07 |
US7872168B2 (en) | 2011-01-18 |
CN1867308A (zh) | 2006-11-22 |
CN100430036C (zh) | 2008-11-05 |
ZA200603067B (en) | 2007-10-31 |
US20110114245A1 (en) | 2011-05-19 |
EP1677721A1 (en) | 2006-07-12 |
KR101200174B1 (ko) | 2012-11-13 |
WO2005044163A1 (en) | 2005-05-19 |
KR20060090703A (ko) | 2006-08-14 |
US20050096623A1 (en) | 2005-05-05 |
US20140367016A1 (en) | 2014-12-18 |
US8450555B2 (en) | 2013-05-28 |
MXPA06004184A (es) | 2006-06-28 |
US10285868B2 (en) | 2019-05-14 |
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