JP4109968B2 - Adhesive plaster and method for producing the same - Google Patents

Adhesive plaster and method for producing the same Download PDF

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JP4109968B2
JP4109968B2 JP2002327363A JP2002327363A JP4109968B2 JP 4109968 B2 JP4109968 B2 JP 4109968B2 JP 2002327363 A JP2002327363 A JP 2002327363A JP 2002327363 A JP2002327363 A JP 2002327363A JP 4109968 B2 JP4109968 B2 JP 4109968B2
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Japan
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adhesive layer
pressure
sensitive adhesive
adhesive
central region
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JP2004159788A (en
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英志 野上
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Lintec Corp
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Lintec Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、パッドを備えた傷口等の保護のために用いられる絆創膏及びその製造方法に関する。
【0002】
【従来の技術】
従来の絆創膏は、粘着剤層の幅寸法とパッドの幅寸法とが僅かしか相違せず、パッドの両側辺部の粘着面が非常に狭くなっている。従って、この絆創膏を関節部位に貼付した場合、パッドの両脇部分の貼着強度が不充分であるため、関節の動きによりパッドの両側辺部の浮き剥れが生じやすく、また、その結果、浮き剥れ部位より水が侵入することがあった。
しかしながら、従来の絆創膏では、粘着剤層に、同一組成の粘着剤を用いていたので、皮膚への粘着力を強くしてしまうと、絆創膏を交換する際に絆創膏全体が剥れにくくなる。
【0003】
パッドの両側辺部の浮き剥れを防止するものとして、パッド周辺部の粘着剤層上に、両面粘着シートなどで粘着部を設けた絆創膏があるが、粘着剤層の形成と粘着部の形成が別工程となり煩雑であり、更に粘着シート片の上に両面粘着シート及びパッドを所定の位置に貼り付けることが困難であった。
【0004】
【特許文献1】
実開平1−104121号公報
【0005】
【発明が解決しようとする課題】
本発明は、適用時のパッドの両側辺部の浮き剥れ防止を可能ならしめた絆創膏を提供することを目的とする。
【0006】
【課題を解決するための手段】
本発明は、以下の発明を包含する。
(1)基材シート、該基材シートの片面に積層された粘着剤層、該粘着剤層表面の中央域に設けられたパッド、並びに該パッド及び該粘着剤層の粘着面を覆うように該粘着剤層の粘着面に剥離可能に貼付された剥離シートからなる絆創膏であって、前記粘着剤層表面の中央域の粘着力が中央域以外の部分の粘着剤層の粘着力よりも高いことを特徴とする絆創膏。
【0007】
(2)JIS Z0237に準拠して測定された前記粘着剤層表面の中央域の粘着力が6〜12N/19mmであり、中央域以外の部分の粘着剤層の粘着力が2〜6N/19mmである前記(1)に記載の絆創膏。
(3)前記粘着剤層表面の中央域の粘着剤層の塗布量を、中央域以外の部分の粘着剤層の塗布量よりも多くすることにより製造された前記(1)又は(2)に記載の絆創膏。
【0008】
(4)前記粘着剤層表面の中央域の粘着剤層の塗布量が30〜70g/m2あり、中央域以外の部分の粘着剤層の塗布量が10〜50g/m2である前記(3)に記載の絆創膏。
(5)前記粘着剤層表面の中央域の粘着剤層の組成と、中央域以外の部分の粘着剤層の組成が異なる前記(1)〜(4)のいずれかに記載の絆創膏。
(6)前記粘着剤層表面の中央域の粘着剤層中の架橋剤量を、中央域以外の部分の粘着剤層中の架橋剤量よりも少なくすることにより製造された前記(5)に記載の絆創膏。
【0009】
(7)前記粘着剤層表面の中央域の粘着剤層中の粘着付与剤量を、中央域以外の部分の粘着剤層中の粘着付与剤量よりも多くすることにより製造された前記(5)に記載の絆創膏。
(8)前記粘着剤層表面の中央域及び中央域以外の部分の粘着剤層をパターンコーティングにより形成することを特徴とする前記(1)〜(7)のいずれかに記載の絆創膏の製造方法。
【0010】
【発明の実施の形態】
本発明の絆創膏は主に、基材シート、粘着剤層、パッド及び剥離シートからなっている。本発明の絆創膏は更に包装材で1個ずつ包装して個別包装体とすることができる。
本発明に用いる基材シートは、適度の柔軟性と強度を有するものであれば特に限定されない。かかる基材シートの素材の例としては、綿、スフ、麻、化学繊維などからなる織布、軟質ポリ塩化ビニル、ポリエチレン、ポリウレタンなどのプラスチックフィルム、レーヨン、ポリエステル、ナイロンなどの不織布、和紙などが挙げられ、更にこれらの多層積層シートを用いることができる。
絆創膏の形状は、一般には、長方形であるが、それに限定されず、四隅を丸めた形状、絆創膏の一端又は両端にテーパをつけた形状、楕円形状、その他任意の形状を採用することができる。
【0011】
本発明に用いる粘着剤は、直接皮膚に貼付するものであるから、皮膚刺激性の少ないものでなければならない。一般には、天然ゴムなどのゴム系、アクリル系、ポリイソブチレン系、シリコーン系など、通常、絆創膏に使用されている感圧粘着剤を用いることができる。本発明における剥離シートは、前記粘着剤が適度に接着することができ、かつ使用時には容易に剥離することができるものでなければならない。かかる剥離シートとしては、ポリエチレン、ポリプロピレン、ポリ塩化ビニルなどのプラスチックフィルム、シリコーン樹脂、フッ素樹脂などの剥離性材料でコーティングした紙のシートなどが挙げられる。特にシリコーン樹脂、フッ素樹脂などの剥離性材料をコーティングした紙のシートは、良好な剥離性、取扱いの容易性の面から好ましい。
【0012】
本発明に用いるパッドは、創傷部を被覆し、創傷部から浸出する体液、血液等を吸収するためのもので、パッド用素材としては、ガーゼその他の吸水性を有する素材が挙げられる。またポリアクリル酸などの高吸水性ポリマーを含有させてもよい。パッドの形状は、基材の形状、創傷の形状等に応じて変形させることが好ましいが、通常は、長方形、四隅を丸めた長方形、一端又は両端にテーパをつけた形状、楕円形などの形状を適宜採用することができる。
包装シートで個別に包装する場合には、紙、プラスチックあるいはこれらの複合素材等を用いることができる。
【0013】
本発明の絆創膏は、粘着剤層表面の中央域の粘着力を中央域以外の部分の粘着剤層の粘着力より高くすることにより、適用時の浮き剥れ防止を可能ならしめたことを特徴とする。
本発明の実施形態について、図1を用いて説明する。本発明の絆創膏には、基材シート1上に、粘着剤層2が両サイドに、粘着力の高い粘着剤層3が中央域に塗布されており、更に粘着剤層3上の中心部にパッド4が設けられている。パッドの幅をAとすると、粘着剤層3の塗布幅Bは、通常Aの100〜200%であり、好ましくは120〜180%である。また、パッドの長さDは、基材シートの長さCの0.3〜0.8倍が好ましい。パッドの長さDが基材シートの長さCの0.3倍未満では、パッドが細くなりすぎ、創傷への貼着時に僅かなずれで創傷面上を粘着剤層が覆ったりするため好ましくなく、また、0.8倍を超えると、パッドの両側辺部5の粘着剤層の幅が不十分となり、関節を大きく屈曲したり、屈曲を繰り返したとき、浮き剥れが生じやすくなる。
【0014】
本発明の絆創膏は、中央域にある粘着剤層3の粘着力が、粘着剤層2の粘着力よりも高くなっており、これにより、適用時の浮き剥れが防止される。
本発明の絆創膏における粘着剤層の粘着力は、JIS Z0237に準拠して測定された粘着剤層の粘着力が、粘着剤層3では、好ましくは6〜12N/19mm、更に好ましくは7〜11N/19mmであり、粘着剤層2では、好ましくは2〜6N/19mm、更に好ましくは3〜5N/19mmである。
【0015】
粘着剤層3の粘着力を粘着剤層2の粘着力よりも高くする手段は特に限定されないが、例えば、粘着剤層3を形成する粘着剤の塗布量を、粘着剤層2を形成する粘着剤の塗布量よりも多くすることが挙げられる。この場合、粘着剤層3を形成する粘着剤の乾燥後の塗布量は、好ましくは30〜70g/m2、更に好ましくは40〜60g/m2であり、粘着剤層2を形成する粘着剤の乾燥後の塗布量は、好ましくは10〜50g/m2、更に好ましくは20〜40g/m2である。
【0016】
一方、粘着剤の塗布量の変化ではなく、粘着剤の組成を変えることにより、粘着力をコントロールする場合には、粘着剤層3と粘着剤層2の粘着剤の塗布量は同一でもよく、好ましくは10〜70g/m2、更に好ましくは20〜60g/m2である。
粘着剤の組成を変えた例として、市販されている粘着剤の中より、粘着力の高い粘着剤を粘着剤層3として用い、粘着力の低い粘着剤を粘着剤層2に用いる方法が挙げられる。
【0017】
また、粘着剤に2液架橋型粘着剤を用いる場合には、粘着剤層3に用いる架橋剤(硬化剤)の配合量を、粘着剤層2に用いる架橋剤の配合量より少なくすることによっても、粘着剤層3の粘着力を粘着剤層2の粘着力よりも高くすることができる。前記架橋型粘着剤としては、アクリル系粘着剤、ウレタン系粘着剤などが挙げられる。アクリル系粘着剤としては、例えば、アルキル基の炭素数が2〜10のアクリル酸アルキルエステルを主成分として、カルボキシル基含有ビニルモノマー等を共重合したものが挙げられる。
【0018】
前記架橋剤としては、例えばヘキサメチレンジイソシアナート、トルイジンジイソシアナート等のイソシアナート化合物;1,3−ビス(N,N−ジグリシジルアミノメチル)トルエン、N,N,N´,N´−テトラグリシジル−4,4´−ジアミノジフェニルメタン等のエポキシ化合物;トリスエチルアセトアセテートアルミニウム、エチルアセトアセテートアルミニウムジイソプロピレート等の金属キレート化合物;N,N´−トルエン−2,4−ビス(1−アジリジンカルボキシアミド)トリエチレンメラミン、ヘキサメチレンジエチレン尿素等のイミン化合物などが挙げられる。
更に、粘着剤層3に用いる粘着付与剤の配合量を、粘着剤層2に用いる粘着付与剤の配合量より多くすることによっても、粘着剤層3の粘着力を粘着剤層2の粘着力よりも高くすることができる。
【0019】
前記粘着付与剤としては、例えばロジン系樹脂(ロジン、ロジン誘導体、又は、水素化ロジン、不均化ロジン、重合ロジン等の変性ロジン、及びこれらの変性ロジンエステル)、テルペン樹脂、テルペンフェノール樹脂、芳香族変性テルペン樹脂、水素化テルペン樹脂、脂肪族系石油樹脂、芳香族系石油樹脂、共重合系石油樹脂、脂環族系石油樹脂、水素化石油樹脂、アルキルフェノール樹脂などが挙げられる。
【0020】
本発明の絆創膏の粘着剤層には、必要に応じて、プロセスオイル、ポリイソブチレン、ポリブテン等の可塑剤(軟化剤);酸化チタン、酸化亜鉛、メタケイ酸アルミニウム、炭酸カルシウム、リン酸カルシウム等の充填剤;デンプン、セルロース誘導体、ポリビニルアルコール等の保水機能付与剤;流動パラフィン;老化防止剤などを配合することができる。
本発明の絆創膏の製造は、粘着剤をパターンコーティングすることにより効率的に行うことができる。
粘着剤層のパターンコーティングは、例えば、次のようにして行うことができる。
【0021】
コンマコーターを用いて粘着剤を塗布する場合には、糊溜め部に仕切り板を複数設けて配合の異なる粘着剤を交互にストライプ状に供給することにより製造することができる。また、ダイコーターを用いて粘着剤を塗布する場合には、多層ダイヘッドを用いることにより、配合の異なる粘着剤を同時に塗布することができる。ここで、配合の異なる粘着剤溶液の固形分に差をもたせることにより、乾燥後の塗布量の異なる粘着剤層を交互に形成することができる。なお、粘着剤の塗布方法として、基材シートに直接塗布してもよいし、離型剤を塗布した剥離シート上に粘着剤層を形成した後に基材シートを貼り合わせることにより粘着剤を転写してもよい。
このようにして得られた粘着剤層をパターンコーティングした粘着シートを用いて、公知の方法により、粘着剤層表面の中央域にパッドを設けた絆創膏を製造することができる。
【0022】
【実施例】
以下、実施例及び比較例により本発明を更に具体的に説明するが、これらは本発明の範囲を何ら制限するものではない。
(実施例1)
粘着剤層2の粘着剤溶液の調製
アクリル酸n−ブチル65質量部、アクリル酸2−エチルヘキシル32質量部、アクリル酸3質量部及び重合開始剤としてアゾビスイソブチロニトリル0.25質量部を用いて、酢酸エチルを溶媒として、不活性ガス雰囲気中で65℃にて12時間重合を行い、アクリル系粘着剤溶液(1)を調製した。得られたポリマーの固形分濃度は50.0%であった。
次に、アクリル系粘着剤溶液(1)固形分100質量部に対し、イソシアナート系架橋剤(東洋インキ社製「BHS−8515」、固形分濃度37.5%)を固形分で0.75質量部を添加・混合した液を調製した。
【0023】
粘着剤層3の粘着剤溶液の調製
アクリル系粘着剤溶液(1)固形分100質量部に対し、イソシアナート系架橋剤(東洋インキ社製「BHS−8515」、固形分濃度37.5%)を固形分で0.35質量部を添加・混合した液を調製した。
絆創膏の作成
得られた粘着剤層2の粘着剤溶液(固形分濃度約50%)及び粘着剤層3の粘着剤溶液(固形分濃度約50%)を、糊溜め部に仕切り板を複数設けたコンマコーターを用いて、剥離シート(リンテック(株)製、商品名「SP−KP85Gシロ」)上に、粘着剤層2,3の乾燥後の塗布量が約30g/m2となるように、粘着剤層2,3を交互にストライプ状に塗布し、100℃で2分間乾燥後、基材シートとして厚さ40μmのポリウレタンフィルムと貼り合わせ粘着シートを得た。このときの粘着剤層3の塗布幅は25mmであった。
この粘着シートを粘着剤層3が中央域にくるように幅72mm×長さ19mmの大きさに裁断し、粘着剤層表面の中央域に幅15mm×長さ15mmの大きさのパッドを設けて実施例1の絆創膏を得た。
【0024】
(実施例2)
粘着剤層2の粘着剤溶液の調製
実施例1のアクリル系粘着剤溶液(1)固形分100質量部に対し、イソシアナート系架橋剤(東洋インキ社製「BHS−8515」、固形分濃度37.5%)を固形分で0.75質量部、更に、溶液の固形分濃度が約30%になるように希釈溶剤として酢酸エチルを添加・混合したアクリル系粘着剤溶液(2)を調製した。
【0025】
粘着剤層3の粘着剤溶液の調製
実施例1のアクリル系粘着剤溶液(1)固形分100質量部に対し、イソシアナート系架橋剤(東洋インキ社製「BHS−8515」、固形分濃度37.5%)を固形分で0.75質量部を添加・混合した液を調製した。
絆創膏の作成
得られた粘着剤層2の粘着剤溶液(固形分濃度約30%)及び粘着剤層3の粘着剤溶液(固形分濃度約50%)を、糊溜め部に仕切り板を複数設けたコンマコーターを用いて、剥離シート(リンテック(株)製、商品名「SP−KP85Gシロ」)上に、乾燥後の塗布量を粘着剤層2が約30g/m2、粘着剤層3が約50g/m2となるように、粘着剤層2,3を交互にストライプ状に塗布し、100℃で2分間乾燥後、基材シートとして厚さ40μmのポリウレタンフィルムと貼り合わせ粘着シートを得た。このときの粘着剤層3の塗布幅は25mmであった。
この粘着シートを実施例1と同様にして、実施例2の絆創膏を得た。
【0026】
(実施例3)
粘着剤層2の粘着剤溶液の調製
実施例1のアクリル系粘着剤溶液(1)固形分100質量部に対し、イソシアナート系架橋剤(東洋インキ社製「BHS−8515」、固形分濃度37.5%)を固形分で0.75質量部を添加・混合した液を調製した。
粘着剤層3の粘着剤溶液の調製
実施例1のアクリル系粘着剤溶液(1)固形分100質量部に対し、イソシアナート系架橋剤(東洋インキ社製「BHS−8515」、固形分濃度37.5%)を固形分で0.75質量部、水素化ロジンエステル(荒川化学工業社製、KE−311)を固形分で20質量部、更に、溶液の固形分濃度が約50%になるように希釈溶剤として酢酸エチルを添加・混合したアクリル系粘着剤溶液(3)を調製した。
【0027】
絆創膏の作成
得られた粘着剤層2の粘着剤溶液(固形分濃度約50%)及び粘着剤層3の粘着剤溶液(固形分濃度約50%)を、糊溜め部に仕切り板を複数設けたコンマコーターを用いて、剥離シート(リンテック(株)製、商品名「SP−KP85Gシロ」)上に、粘着剤層2,3の乾燥後の塗布量が約30g/m2となるように、粘着剤層2,3を交互にストライプ状に塗布し、100℃で2分間乾燥後、基材シートとして厚さ40μmのポリウレタンフィルムと貼り合わせ粘着シートを得た。このときの粘着剤層3の塗布幅は25mmであった。
この粘着シートを実施例1と同様にして、実施例3の絆創膏を得た。
【0028】
(実施例4)
粘着剤層2の粘着剤溶液の調製
実施例1のアクリル系粘着剤溶液(1)固形分100質量部に対し、イソシアナート系架橋剤(東洋インキ社製「BHS−8515」、固形分濃度37.5%)を固形分で0.75質量部、更に、溶液の固形分濃度が約30%になるように希釈溶剤として酢酸エチルを添加・混合したアクリル系粘着剤溶液(2)を調製した。
【0029】
粘着剤層3の粘着剤溶液の調製
実施例1のアクリル系粘着剤溶液(1)固形分100質量部に対し、イソシアナート系架橋剤(東洋インキ社製「BHS−8515」、固形分濃度37.5%)を固形分で0.75質量部、水素化ロジンエステル(荒川化学工業社製、KE−311)を固形分で20質量部、更に、溶液の固形分濃度が約50%になるように希釈溶剤として酢酸エチルを添加・混合したアクリル系粘着剤溶液(3)を調製した。
【0030】
絆創膏の作成
得られた粘着剤層2の粘着剤溶液(固形分濃度約30%)及び粘着剤層3の粘着剤溶液(固形分濃度約50%)を、糊溜め部に仕切り板を複数設けたコンマコーターを用いて、剥離シート(リンテック(株)製、商品名「SP−KP85Gシロ」)上に、乾燥後の塗布量を粘着剤層2が約30g/m2、粘着剤層3が約50g/m2となるように、粘着剤層2,3を交互にストライプ状に塗布し、100℃で2分間乾燥後、基材シートとして厚さ40μmのポリウレタンフィルムと貼り合わせ粘着シートを得た。このときの粘着剤層3の塗布幅は25mmであった。
この粘着シートを実施例1と同様にして、実施例4の絆創膏を得た。
【0031】
(実施例5)
粘着剤層2の粘着剤溶液の調製
実施例1のアクリル系粘着剤溶液(1)固形分100質量部に対し、イソシアナート系架橋剤(東洋インキ社製「BHS−8515」、固形分濃度37.5%)を固形分で0.75質量部添加・混合した液を調製した。
粘着剤層3の粘着剤溶液の調製
粘着力の高いアクリル系粘着剤(リンテック社製「PA−T1」、固形分濃度50.0%)を固形分で0.75質量部を添加・混合した液を調製した。
【0032】
絆創膏の作成
得られた粘着剤層2の粘着剤溶液(固形分濃度約50%)及び粘着剤層3の粘着剤溶液(固形分濃度約50%)を、糊溜め部に仕切り板を複数設けたコンマコーターを用いて、剥離シート(リンテック(株)製、商品名「SP−KP85Gシロ」)上に、粘着剤層2,3の乾燥後の塗布量が約30g/m2となるように、粘着剤層2,3を交互にストライプ状に塗布し、100℃で2分間乾燥後、基材シートとして厚さ40μmのポリウレタンフィルムと貼り合わせ粘着シートを得た。このときの粘着剤層3の塗布幅は25mmであった。
この粘着シートを実施例1と同様にして、実施例5の絆創膏を得た。
【0033】
(比較例)
粘着剤溶液の調製
実施例1のアクリル系粘着剤溶液(1)固形分100質量部に対し、イソシアナート系架橋剤(東洋インキ社製「BHS−8515」、固形分濃度37.5%)を固形分で0.75質量部添加・混合した液を調製した。
絆創膏の作成
得られた粘着剤溶液(固形分濃度約50%)を、コンマコーターを用いて、剥離シート(リンテック(株)製、商品名「SP−KP85Gシロ」)上に、乾燥後の塗布量が約30g/m2となるように塗布し、100℃で2分間乾燥後、基材シートとして厚さ40μmのポリウレタンフィルムと貼り合わせ粘着シートを得た。
この粘着シートを幅72mm×長さ19mmの大きさに裁断し、粘着剤層表面の中央域に幅15mm×長さ15mmの大きさのパッドを設けて、比較例の絆創膏を得た。
【0034】
(粘着力の測定)
粘着力測定時のポリウレタンフィルムの伸びを防止するため、試料(パッドを設ける前の粘着シート)のポリウレタンフィルム側にポリエステルテープを貼り付けた後、19mm×150mmの大きさの試験片を作成し、試験片を試験板(清浄にしたフェノール樹脂板)に貼り付け、JIS Z0237に準拠して粘着力を測定した。試験結果を表1に示した。
【0035】
(貼付試験)
実施例1〜5及び比較例の絆創膏を指の第一関節部に24時間貼付し、パッドの両側辺部及び絆創膏の両端部の浮き剥がれを以下の基準で評価した。試験結果を表1に示した。
評価基準
◎:浮き剥がれが1mm未満
○:浮き剥がれが1mm以上3mm未満
×:浮き剥がれが3mm以上
【0036】
【表1】

Figure 0004109968
【0037】
【発明の効果】
本発明によれば、適用時のパッドの両側辺部の浮き剥がれ防止を可能ならしめた絆創膏及びその製造方法を提供することができる。
【図面の簡単な説明】
【図1】本発明における絆創膏を説明するための図である。
【符号の説明】
1 基材シート
2 粘着剤層2の粘着面
3 粘着剤層3の粘着面
4 パッド
5 パッドの両側辺部
A パッドの幅
B 粘着剤層3の塗布幅
C 基材シートの長さ
D パッドの長さ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bandage used for protecting a wound or the like equipped with a pad and a method for manufacturing the same.
[0002]
[Prior art]
In the conventional adhesive bandage, the width dimension of the pressure-sensitive adhesive layer and the width dimension of the pad are slightly different, and the pressure-sensitive adhesive surfaces on both sides of the pad are very narrow. Therefore, when this adhesive bandage is affixed to the joint site, the adhesive strength of both sides of the pad is insufficient, so that the side of the pad tends to float off due to the movement of the joint, and as a result, Water sometimes entered from the floating part.
However, in the conventional adhesive bandage, an adhesive having the same composition is used for the adhesive layer. Therefore, if the adhesive strength to the skin is increased, the entire adhesive bandage is difficult to peel off when the adhesive bandage is replaced.
[0003]
There are adhesive bandages with adhesive parts on the adhesive layer around the pad, such as double-sided adhesive sheets, to prevent the side edges of the pad from lifting off. However, it is difficult to attach a double-sided PSA sheet and a pad in place on the PSA sheet piece.
[0004]
[Patent Document 1]
Japanese Utility Model Publication No. 1-104121
[Problems to be solved by the invention]
An object of this invention is to provide the adhesive bandage which enabled prevention of the peeling of the both sides of a pad at the time of application.
[0006]
[Means for Solving the Problems]
The present invention includes the following inventions.
(1) A base sheet, an adhesive layer laminated on one side of the base sheet, a pad provided in a central region of the surface of the adhesive layer, and an adhesive surface of the pad and the adhesive layer so as to cover An adhesive bandage comprising a release sheet releasably affixed to the adhesive surface of the adhesive layer, wherein the adhesive force in the central region of the adhesive layer surface is higher than the adhesive force of the adhesive layer in portions other than the central region Adhesive plaster characterized by that.
[0007]
(2) The adhesive strength of the central area of the pressure-sensitive adhesive layer surface measured in accordance with JIS Z0237 is 6 to 12 N / 19 mm, and the adhesive strength of the adhesive layer in portions other than the central area is 2 to 6 N / 19 mm. The adhesive bandage according to (1) above.
(3) In the above (1) or (2) produced by increasing the coating amount of the pressure-sensitive adhesive layer in the central region of the surface of the pressure-sensitive adhesive layer to be larger than the coating amount of the pressure-sensitive adhesive layer in a portion other than the central region. The described adhesive bandage.
[0008]
(4) The coating amount of the pressure-sensitive adhesive layer in the central region on the surface of the pressure-sensitive adhesive layer is 30 to 70 g / m 2, and the coating amount of the pressure-sensitive adhesive layer in the portion other than the central region is 10 to 50 g / m 2. The adhesive bandage as described in 3).
(5) The adhesive bandage according to any one of (1) to (4), wherein the composition of the pressure-sensitive adhesive layer in the central region on the surface of the pressure-sensitive adhesive layer is different from the composition of the pressure-sensitive adhesive layer in a portion other than the central region.
(6) In the above (5) produced by reducing the amount of the cross-linking agent in the pressure-sensitive adhesive layer in the central region of the surface of the pressure-sensitive adhesive layer to be less than the amount of the cross-linking agent in the pressure-sensitive adhesive layer in the portion other than the central region. The described adhesive bandage.
[0009]
(7) Manufactured by increasing the amount of the tackifier in the pressure-sensitive adhesive layer in the central region of the surface of the pressure-sensitive adhesive layer to be larger than the amount of the tackifier in the pressure-sensitive adhesive layer in the portion other than the central region (5) ).
(8) The method for producing an adhesive bandage according to any one of (1) to (7), wherein the adhesive layer on the surface of the adhesive layer and the adhesive layer in a portion other than the central region are formed by pattern coating. .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The adhesive bandage of the present invention mainly comprises a base sheet, an adhesive layer, a pad and a release sheet. The bandage of the present invention can be further packaged one by one with a packaging material to form an individual package.
The base material sheet used for this invention will not be specifically limited if it has moderate softness | flexibility and intensity | strength. Examples of the material of the base sheet include woven fabrics made of cotton, suf, hemp, chemical fibers, etc., plastic films such as soft polyvinyl chloride, polyethylene and polyurethane, non-woven fabrics such as rayon, polyester and nylon, and Japanese paper. Furthermore, these multilayer laminated sheets can be used.
The shape of the adhesive bandage is generally rectangular, but is not limited thereto, and a shape with rounded corners, a shape in which one or both ends of the adhesive bandage are tapered, an elliptical shape, and other arbitrary shapes can be adopted.
[0011]
Since the pressure-sensitive adhesive used in the present invention is directly applied to the skin, it should be less irritating to the skin. In general, pressure-sensitive adhesives that are usually used in adhesive bandages, such as rubbers such as natural rubber, acrylics, polyisobutylenes, and silicones, can be used. The release sheet in the present invention should be capable of adhering the pressure-sensitive adhesive to an appropriate level and easily peeling off at the time of use. Examples of the release sheet include plastic films such as polyethylene, polypropylene, and polyvinyl chloride, and paper sheets coated with a release material such as silicone resin and fluororesin. In particular, a paper sheet coated with a releasable material such as silicone resin or fluororesin is preferable from the viewpoint of good releasability and ease of handling.
[0012]
The pad used in the present invention is for covering a wound part and absorbing body fluid, blood, and the like leached from the wound part, and examples of the pad material include gauze and other water-absorbing materials. Further, a highly water-absorbing polymer such as polyacrylic acid may be contained. The shape of the pad is preferably deformed according to the shape of the base material, the shape of the wound, etc., but is usually a rectangle, a rectangle with rounded corners, a shape with one or both ends tapered, an ellipse, etc. Can be adopted as appropriate.
In the case of individual packaging with a packaging sheet, paper, plastic, or a composite material thereof can be used.
[0013]
The adhesive bandage of the present invention is characterized in that the adhesive strength of the central area of the pressure-sensitive adhesive layer surface is made higher than the adhesive strength of the pressure-sensitive adhesive layer in the portion other than the central area, thereby making it possible to prevent floating when applied. And
An embodiment of the present invention will be described with reference to FIG. In the adhesive bandage of the present invention, a pressure-sensitive adhesive layer 2 is applied to both sides, a high-adhesive pressure-sensitive adhesive layer 3 is applied to the central region on the base sheet 1, and further to the central portion on the pressure-sensitive adhesive layer 3. A pad 4 is provided. Assuming that the width of the pad is A, the coating width B of the pressure-sensitive adhesive layer 3 is usually 100 to 200% of A, and preferably 120 to 180%. The pad length D is preferably 0.3 to 0.8 times the length C of the base sheet. If the length D of the pad is less than 0.3 times the length C of the base sheet, the pad becomes too thin, and the adhesive layer is preferably covered on the wound surface with a slight deviation when applied to the wound. If the ratio exceeds 0.8, the width of the pressure-sensitive adhesive layer on both side portions 5 of the pad becomes insufficient, and when the joint is largely bent or repeatedly bent, it tends to be lifted off.
[0014]
In the adhesive bandage of the present invention, the adhesive force of the pressure-sensitive adhesive layer 3 in the central region is higher than the pressure-sensitive adhesive force of the pressure-sensitive adhesive layer 2, thereby preventing lifting off during application.
In the adhesive bandage of the present invention, the adhesive strength of the adhesive layer measured according to JIS Z0237 is preferably 6 to 12 N / 19 mm, more preferably 7 to 11 N in the adhesive layer 3. In the adhesive layer 2, it is preferably 2 to 6 N / 19 mm, and more preferably 3 to 5 N / 19 mm.
[0015]
The means for making the adhesive strength of the adhesive layer 3 higher than the adhesive strength of the adhesive layer 2 is not particularly limited. For example, the application amount of the adhesive forming the adhesive layer 3 is changed to the adhesive forming the adhesive layer 2. Increasing the coating amount of the agent. In this case, the coating amount after drying of the pressure-sensitive adhesive that forms adhesive layer 3 is preferably 30~70g / m 2, more preferably from 40 to 60 g / m 2, the pressure-sensitive adhesive for forming the pressure-sensitive adhesive layer 2 coating amount after drying is preferably 10 to 50 g / m 2, more preferably a 20 to 40 g / m 2.
[0016]
On the other hand, when the adhesive force is controlled by changing the composition of the adhesive rather than the change of the adhesive application amount, the adhesive application amount of the adhesive layer 3 and the adhesive layer 2 may be the same, preferably 10~70g / m 2, more preferably from 20 to 60 g / m 2.
As an example in which the composition of the pressure-sensitive adhesive is changed, a method in which a pressure-sensitive adhesive having a high adhesive strength is used as the pressure-sensitive adhesive layer 3 and a pressure-sensitive adhesive having a low pressure-sensitive adhesive strength is used in the pressure-sensitive adhesive layer 2 among commercially available pressure-sensitive adhesives. It is done.
[0017]
In addition, when a two-component cross-linking pressure-sensitive adhesive is used for the pressure-sensitive adhesive, the blending amount of the cross-linking agent (curing agent) used for the pressure-sensitive adhesive layer 3 is made smaller than the blending amount of the cross-linking agent used for the pressure-sensitive adhesive layer 2. Moreover, the adhesive force of the adhesive layer 3 can be made higher than the adhesive force of the adhesive layer 2. Examples of the cross-linking pressure-sensitive adhesive include acrylic pressure-sensitive adhesives and urethane pressure-sensitive adhesives. Examples of the acrylic pressure-sensitive adhesive include those obtained by copolymerizing a carboxyl group-containing vinyl monomer or the like with an alkyl alkyl ester having 2 to 10 carbon atoms as the main component.
[0018]
Examples of the crosslinking agent include isocyanate compounds such as hexamethylene diisocyanate and toluidine diisocyanate; 1,3-bis (N, N-diglycidylaminomethyl) toluene, N, N, N ′, N′— Epoxy compounds such as tetraglycidyl-4,4′-diaminodiphenylmethane; metal chelate compounds such as trisethylacetoacetate aluminum and ethylacetoacetate aluminum diisopropylate; N, N′-toluene-2,4-bis (1-aziridine Carboxamido) imine compounds such as triethylenemelamine and hexamethylenediethyleneurea.
Furthermore, the adhesive strength of the pressure-sensitive adhesive layer 3 can also be increased by increasing the amount of the tackifier used in the pressure-sensitive adhesive layer 3 to be greater than the amount of the tackifier used in the pressure-sensitive adhesive layer 2. Can be higher.
[0019]
Examples of the tackifier include rosin resins (rosin, rosin derivatives, or modified rosins such as hydrogenated rosin, disproportionated rosin, and polymerized rosin, and modified rosin esters thereof), terpene resins, terpene phenol resins, Aromatic modified terpene resins, hydrogenated terpene resins, aliphatic petroleum resins, aromatic petroleum resins, copolymerized petroleum resins, alicyclic petroleum resins, hydrogenated petroleum resins, alkylphenol resins and the like can be mentioned.
[0020]
For the adhesive layer of the adhesive bandage of the present invention, a plasticizer (softener) such as process oil, polyisobutylene, polybutene, or the like, if necessary, a filler such as titanium oxide, zinc oxide, aluminum metasilicate, calcium carbonate, calcium phosphate Water-retaining function-imparting agents such as starch, cellulose derivatives and polyvinyl alcohol; liquid paraffin; anti-aging agents and the like can be blended.
Manufacture of the adhesive bandage of this invention can be efficiently performed by pattern-coating an adhesive.
The pattern coating of the pressure-sensitive adhesive layer can be performed, for example, as follows.
[0021]
When the adhesive is applied using a comma coater, it can be manufactured by providing a plurality of partition plates in the glue reservoir and alternately supplying differently formulated adhesives in a stripe shape. Moreover, when apply | coating an adhesive using a die-coater, the adhesive of different mixing | blending can be simultaneously apply | coated by using a multilayer die head. Here, by making a difference in the solid content of the pressure-sensitive adhesive solutions having different compositions, pressure-sensitive adhesive layers having different coating amounts after drying can be alternately formed. In addition, as an application method of the adhesive, it may be applied directly to the base sheet, or the adhesive is transferred by bonding the base sheet after forming the adhesive layer on the release sheet coated with the release agent. May be.
By using a pressure-sensitive adhesive sheet obtained by pattern-coating the pressure-sensitive adhesive layer thus obtained, a bandage provided with a pad in the central region of the surface of the pressure-sensitive adhesive layer can be produced by a known method.
[0022]
【Example】
EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention further more concretely, these do not restrict | limit the scope of the present invention at all.
(Example 1)
Preparation of pressure-sensitive adhesive solution for pressure-sensitive adhesive layer 2 65 parts by weight of n-butyl acrylate, 32 parts by weight of 2-ethylhexyl acrylate, 3 parts by weight of acrylic acid, and azobisisobutyronitrile as a polymerization initiator Using 25 parts by mass, polymerization was carried out at 65 ° C. for 12 hours in an inert gas atmosphere using ethyl acetate as a solvent to prepare an acrylic pressure-sensitive adhesive solution (1). The solid content concentration of the obtained polymer was 50.0%.
Next, with respect to 100 parts by mass of the acrylic pressure-sensitive adhesive solution (1), an isocyanate cross-linking agent (“BHS-8515” manufactured by Toyo Ink Co., Ltd., solid content concentration: 37.5%) is 0.75 by solid content. The liquid which added and mixed the mass part was prepared.
[0023]
Preparation of pressure-sensitive adhesive solution for pressure-sensitive adhesive layer 3 Acrylic pressure-sensitive adhesive solution (1) To 100 parts by mass of solid content, an isocyanate-based crosslinking agent ("BHS-8515" manufactured by Toyo Ink Co., Ltd., solid content concentration: 37) 0.5%) was added and mixed in a solid content of 0.35 parts by mass to prepare a liquid.
Creation of adhesive bandage The obtained adhesive solution of the adhesive layer 2 (solid content concentration of about 50%) and the adhesive solution of the adhesive layer 3 (solid content concentration of about 50%) are partitioned into paste reservoirs. Using a comma coater provided with a plurality of plates, the coating amount after drying of the adhesive layers 2 and 3 is about 30 g / m 2 on a release sheet (trade name “SP-KP85G Shiro” manufactured by Lintec Corporation). Then, the pressure-sensitive adhesive layers 2 and 3 were alternately applied in a stripe shape, dried at 100 ° C. for 2 minutes, and then bonded to a polyurethane film having a thickness of 40 μm as a base sheet to obtain a pressure-sensitive adhesive sheet. The application width of the pressure-sensitive adhesive layer 3 at this time was 25 mm.
The pressure-sensitive adhesive sheet is cut into a size of 72 mm wide × 19 mm long so that the pressure-sensitive adhesive layer 3 is in the central region, and a pad 15 mm wide × 15 mm long is provided in the central region of the pressure-sensitive adhesive layer surface. The adhesive bandage of Example 1 was obtained.
[0024]
(Example 2)
Preparation of pressure-sensitive adhesive solution of pressure-sensitive adhesive layer 2 Acrylic pressure-sensitive adhesive solution of Example 1 (1) Isocyanate-based crosslinking agent ("BHS-8515" manufactured by Toyo Ink Co., Ltd.) Acrylic pressure-sensitive adhesive solution (2) in which ethyl acetate was added and mixed as a diluent solvent so that the solid content concentration was 0.75 parts by mass and the solid content concentration of the solution was about 30%. ) Was prepared.
[0025]
Preparation of pressure-sensitive adhesive solution for pressure-sensitive adhesive layer 3 For the acrylic pressure-sensitive adhesive solution of Example 1 (1) 100 parts by mass of solid content, an isocyanate-based crosslinking agent ("BHS-8515" manufactured by Toyo Ink Co., Ltd., A liquid in which 0.75 parts by mass of a solid content concentration of 37.5%) was added and mixed was prepared.
Creation of adhesive bandage The obtained adhesive solution of the adhesive layer 2 (solid content concentration of about 30%) and the adhesive solution of the adhesive layer 3 (solid content concentration of about 50%) are partitioned into paste reservoirs. using a comma coater provided with a plurality of plates, release sheet (Lintec Co., Ltd., trade name "SP-KP85G white") on the coating amount after drying the adhesive layer 2 of about 30 g / m 2, the adhesive Adhesive layers 2 and 3 are alternately applied in stripes so that the amount of adhesive layer 3 is about 50 g / m 2 , dried at 100 ° C. for 2 minutes, and then bonded to a polyurethane film with a thickness of 40 μm as a base sheet. An adhesive sheet was obtained. The application width of the pressure-sensitive adhesive layer 3 at this time was 25 mm.
This adhesive sheet was used in the same manner as in Example 1 to obtain a bandage of Example 2.
[0026]
(Example 3)
Preparation of pressure-sensitive adhesive solution of pressure-sensitive adhesive layer 2 Acrylic pressure-sensitive adhesive solution of Example 1 (1) Isocyanate-based crosslinking agent ("BHS-8515" manufactured by Toyo Ink Co., Ltd.) A liquid in which 0.75 parts by mass of a solid content concentration of 37.5%) was added and mixed was prepared.
Preparation of pressure-sensitive adhesive solution for pressure-sensitive adhesive layer 3 For the acrylic pressure-sensitive adhesive solution of Example 1 (1) 100 parts by mass of solid content, an isocyanate-based crosslinking agent ("BHS-8515" manufactured by Toyo Ink Co., Ltd., (Solid content concentration 37.5%) is 0.75 mass parts in solid content, hydrogenated rosin ester (Arakawa Chemical Industries, KE-311) is 20 mass parts in solid content, and the solid content concentration of the solution is about An acrylic pressure-sensitive adhesive solution (3) in which ethyl acetate was added and mixed as a diluent solvent so as to be 50% was prepared.
[0027]
Creation of adhesive bandage The obtained adhesive solution of the adhesive layer 2 (solid content concentration of about 50%) and the adhesive solution of the adhesive layer 3 (solid content concentration of about 50%) are partitioned into paste reservoirs. Using a comma coater provided with a plurality of plates, the coating amount after drying of the adhesive layers 2 and 3 is about 30 g / m 2 on a release sheet (trade name “SP-KP85G Shiro” manufactured by Lintec Corporation). Then, the pressure-sensitive adhesive layers 2 and 3 were alternately applied in a stripe shape, dried at 100 ° C. for 2 minutes, and then bonded to a polyurethane film having a thickness of 40 μm as a base sheet to obtain a pressure-sensitive adhesive sheet. The application width of the pressure-sensitive adhesive layer 3 at this time was 25 mm.
The adhesive sheet was used in the same manner as in Example 1 to obtain a bandage of Example 3.
[0028]
Example 4
Preparation of pressure-sensitive adhesive solution of pressure-sensitive adhesive layer 2 Acrylic pressure-sensitive adhesive solution of Example 1 (1) Isocyanate-based crosslinking agent ("BHS-8515" manufactured by Toyo Ink Co., Ltd.) Acrylic pressure-sensitive adhesive solution (2) in which ethyl acetate was added and mixed as a diluent solvent so that the solid content concentration was 0.75 parts by mass and the solid content concentration of the solution was about 30%. ) Was prepared.
[0029]
Preparation of pressure-sensitive adhesive solution for pressure-sensitive adhesive layer 3 For the acrylic pressure-sensitive adhesive solution of Example 1 (1) 100 parts by mass of solid content, an isocyanate-based crosslinking agent ("BHS-8515" manufactured by Toyo Ink Co., Ltd., (Solid content concentration 37.5%) is 0.75 mass parts in solid content, hydrogenated rosin ester (Arakawa Chemical Industries, KE-311) is 20 mass parts in solid content, and the solid content concentration of the solution is about An acrylic pressure-sensitive adhesive solution (3) was prepared by adding and mixing ethyl acetate as a diluent solvent so as to be 50%.
[0030]
Creation of adhesive bandage The adhesive solution of the pressure-sensitive adhesive layer 2 (solid content concentration of about 30%) and the pressure-sensitive adhesive solution of the pressure-sensitive adhesive layer 3 (solid content concentration of about 50%) are partitioned into paste reservoirs. Using a comma coater provided with a plurality of plates, the pressure-sensitive adhesive layer 2 has an adhesive amount of about 30 g / m 2 on the release sheet (product name “SP-KP85G Shiro”, manufactured by Lintec Co., Ltd.). as adhesive layer 3 is about 50 g / m 2, an adhesive layer 2 applied alternately in stripes, dried for 2 minutes at 100 ° C., bonding a polyurethane film having a thickness of 40μm as a substrate sheet An adhesive sheet was obtained. The application width of the pressure-sensitive adhesive layer 3 at this time was 25 mm.
The adhesive sheet of Example 4 was obtained in the same manner as Example 1.
[0031]
(Example 5)
Preparation of pressure-sensitive adhesive solution of pressure-sensitive adhesive layer 2 Acrylic pressure-sensitive adhesive solution of Example 1 (1) Isocyanate-based crosslinking agent ("BHS-8515" manufactured by Toyo Ink Co., Ltd.) A liquid was prepared by adding and mixing 0.75 parts by mass of a solid content concentration of 37.5%).
Preparation of pressure-sensitive adhesive solution for pressure-sensitive adhesive layer 3 A highly adhesive acrylic pressure-sensitive adhesive ("PA-T1" manufactured by Lintec Co., Ltd., solid content concentration: 50.0%) was added to a solid content of 0.75 parts by mass. The added and mixed liquid was prepared.
[0032]
Creation of adhesive bandage The obtained adhesive solution of the adhesive layer 2 (solid content concentration of about 50%) and the adhesive solution of the adhesive layer 3 (solid content concentration of about 50%) are partitioned into paste reservoirs. Using a comma coater provided with a plurality of plates, the coating amount after drying of the adhesive layers 2 and 3 is about 30 g / m 2 on a release sheet (trade name “SP-KP85G Shiro” manufactured by Lintec Corporation). Then, the pressure-sensitive adhesive layers 2 and 3 were alternately applied in a stripe shape, dried at 100 ° C. for 2 minutes, and then bonded to a polyurethane film having a thickness of 40 μm as a base sheet to obtain a pressure-sensitive adhesive sheet. The application width of the pressure-sensitive adhesive layer 3 at this time was 25 mm.
The adhesive sheet of Example 5 was obtained in the same manner as Example 1.
[0033]
(Comparative example)
Preparation of pressure-sensitive adhesive solution Acrylic pressure-sensitive adhesive solution of Example 1 (1) To 100 parts by mass of solid content, an isocyanate-based crosslinking agent ("BHS-8515" manufactured by Toyo Ink Co., Ltd., solid content concentration 37. 5%) was added and mixed in a solid content of 0.75 parts by mass.
Preparation of adhesive bandage The obtained pressure-sensitive adhesive solution (solid content concentration of about 50%) was used on a release sheet (trade name “SP-KP85G Shiro” manufactured by Lintec Corporation) using a comma coater. It apply | coated so that the application quantity after drying might be set to about 30 g / m < 2 >, and after drying for 2 minutes at 100 degreeC, the 40-micrometer-thick polyurethane film and the adhesive sheet were obtained as a base material sheet.
This pressure-sensitive adhesive sheet was cut into a size of 72 mm wide × 19 mm long, and a pad having a size of 15 mm wide × 15 mm long was provided in the central area of the surface of the pressure-sensitive adhesive layer to obtain a comparative bandage.
[0034]
(Measurement of adhesive strength)
In order to prevent the elongation of the polyurethane film at the time of measuring the adhesive force, after attaching a polyester tape to the polyurethane film side of the sample (adhesive sheet before providing the pad), create a test piece having a size of 19 mm × 150 mm, The test piece was affixed to a test plate (cleaned phenol resin plate), and the adhesive strength was measured in accordance with JIS Z0237. The test results are shown in Table 1.
[0035]
(Paste test)
The adhesive bandages of Examples 1 to 5 and the comparative example were affixed to the first joint part of the finger for 24 hours, and the floating peeling of both sides of the pad and both ends of the bandage band was evaluated according to the following criteria. The test results are shown in Table 1.
Evaluation Criteria A: Floating peeling is less than 1 mm B: Floating peeling is 1 mm or more and less than 3 mm X: Floating peeling is 3 mm or more
[Table 1]
Figure 0004109968
[0037]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the adhesive bandage which made it possible to prevent the peeling of the both sides of a pad at the time of application, and its manufacturing method can be provided.
[Brief description of the drawings]
FIG. 1 is a view for explaining a bandage according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base material sheet 2 Adhesive surface 3 of the adhesive layer 2 Adhesive surface 4 of the adhesive layer 3 Pad 5 Both sides A of pad A Width of pad B Coating width C of adhesive layer 3 Length D of base sheet length

Claims (8)

基材シート、該基材シートの片面に積層された粘着剤層、該粘着剤層表面の中央域に設けられたパッド、並びに該パッド及び該粘着剤層の粘着面を覆うように該粘着剤層の粘着面に剥離可能に貼付された剥離シートからなる絆創膏であって、前記粘着剤層表面の中央域の粘着力が中央域以外の部分の粘着剤層の粘着力よりも高いことを特徴とする絆創膏。Base material sheet, pressure-sensitive adhesive layer laminated on one side of the base material sheet, a pad provided in the central region of the surface of the pressure-sensitive adhesive layer, and the pressure-sensitive adhesive so as to cover the pressure-sensitive adhesive surface of the pad and the pressure-sensitive adhesive layer It is a bandage consisting of a release sheet that is releasably affixed to the adhesive surface of the layer, characterized in that the adhesive force in the central region of the adhesive layer surface is higher than the adhesive force of the adhesive layer in portions other than the central region Adhesive plaster. JIS Z0237に準拠して測定された前記粘着剤層表面の中央域の粘着力が6〜12N/19mmであり、中央域以外の部分の粘着剤層の粘着力が2〜6N/19mmである請求項1記載の絆創膏。The adhesive strength of the central region of the pressure-sensitive adhesive layer surface measured in accordance with JIS Z0237 is 6 to 12 N / 19 mm, and the adhesive strength of the adhesive layer other than the central region is 2 to 6 N / 19 mm. Item 1. A bandage according to item 1. 前記粘着剤層表面の中央域の粘着剤層の塗布量を、中央域以外の部分の粘着剤層の塗布量よりも多くすることにより製造された請求項1又は2記載の絆創膏。The adhesive bandage of Claim 1 or 2 manufactured by making the application quantity of the adhesive layer of the center area | region of the said adhesive layer surface more than the application quantity of the adhesive layer of parts other than a center area. 前記粘着剤層表面の中央域の粘着剤層の塗布量が30〜70g/m2あり、中央域以外の部分の粘着剤層の塗布量が10〜50g/m2である請求項3記載の絆創膏。The coating amount of the pressure-sensitive adhesive layer in the central region on the surface of the pressure-sensitive adhesive layer is 30 to 70 g / m 2, and the coating amount of the pressure-sensitive adhesive layer in a portion other than the central region is 10 to 50 g / m 2 . Adhesive plaster. 前記粘着剤層表面の中央域の粘着剤層の組成と、中央域以外の部分の粘着剤層の組成が異なる請求項1〜4のいずれか1項に記載の絆創膏。The adhesive bandage according to any one of claims 1 to 4, wherein the composition of the pressure-sensitive adhesive layer in the central region on the surface of the pressure-sensitive adhesive layer is different from the composition of the pressure-sensitive adhesive layer in a portion other than the central region. 前記粘着剤層表面の中央域の粘着剤層中の架橋剤量を、中央域以外の部分の粘着剤層中の架橋剤量よりも少なくすることにより製造された請求項5記載の絆創膏。The adhesive bandage of Claim 5 manufactured by making the amount of crosslinking agents in the adhesive layer of the center area of the said adhesive layer surface smaller than the amount of crosslinking agents in the adhesive layer of parts other than a center area. 前記粘着剤層表面の中央域の粘着剤層中の粘着付与剤量を、中央域以外の部分の粘着剤層中の粘着付与剤量よりも多くすることにより製造された請求項5記載の絆創膏。The adhesive bandage according to claim 5, which is produced by increasing the amount of tackifier in the pressure-sensitive adhesive layer in the central region of the surface of the pressure-sensitive adhesive layer to be larger than the amount of tackifier in the pressure-sensitive adhesive layer in the portion other than the central region. . 前記粘着剤層表面の中央域及び中央域以外の部分の粘着剤層をパターンコーティングにより形成することを特徴とする請求項1〜7のいずれか1項に記載の絆創膏の製造方法。The method for producing an adhesive bandage according to any one of claims 1 to 7, wherein the adhesive layer on the surface of the adhesive layer is formed by pattern coating in a central area and a portion other than the central area.
JP2002327363A 2002-11-11 2002-11-11 Adhesive plaster and method for producing the same Expired - Fee Related JP4109968B2 (en)

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