JP6920040B2 - 生体貼付用積層体 - Google Patents
生体貼付用積層体 Download PDFInfo
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- JP6920040B2 JP6920040B2 JP2016180411A JP2016180411A JP6920040B2 JP 6920040 B2 JP6920040 B2 JP 6920040B2 JP 2016180411 A JP2016180411 A JP 2016180411A JP 2016180411 A JP2016180411 A JP 2016180411A JP 6920040 B2 JP6920040 B2 JP 6920040B2
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- base material
- carboxylic acid
- acid ester
- material layer
- sensitive adhesive
- Prior art date
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Description
本発明の一実施形態である生体貼付用積層体1は、図1に示すように、例えば、感圧接着剤層2と、基材層3とを備える。また、生体貼付用積層体1は、剥離層4と、バッキングフィルム5とを備える。具体的には、生体貼付用積層体1は、剥離層4と、感圧接着剤層2と、基材層3と、バッキングフィルム5とを厚み方向一方側に向かって順に備える。以下、各層を順に説明する。
剥離層4は、生体貼付用積層体1における厚み方向他方面を形成する厚み方向他方側層である。剥離層4は、感圧接着剤層2の作製に供されるフィルムであって、生体貼付用積層体1の使用前には、感圧接着剤層2を保護し、生体貼付用積層体1の使用時には感圧接着剤層2から剥離される剥離層(保護層)である。剥離層4は、面方向(厚み方向に直交する方向)に延びる略平板(シート)形状を有する。剥離層4としては、例えば、ポリエチレンテレフタレート(PET)フィルム、ポリエチレンナフタレートフィルム、ポリブチレンテレフタレートフィルムなどのポリエステル系フィルムや、ポリエチレン、ポリプロピレン、ポリシクロペンテンなどのポリオレフィン系フィルムなどの、樹脂フィルムが挙げられる。また、剥離層4の表面には、剥離処理が施されていてもよい。剥離層4の厚みは、例えば、1μm以上、好ましくは、10μm以上であり、また、例えば、100μm以下、好ましくは、1000μm以下である。
感圧接着剤層2は、後述する基材層3を生体に貼付するための貼付層である。感圧接着剤層2は、剥離層4の厚み方向一方面の全面に接触している。感圧接着剤層2は、面方向に延びる略平板(シート)形状を有する。感圧接着剤層2は、感圧接着剤組成物からなる。
第1のカルボン酸エステルの割合は、アクリルポリマー100質量部に対して、例えば、30質量部以上、好ましくは、50質量部以上であり、また、例えば、100質量部以下、好ましくは、70質量部以下である。また、樹脂組成物(感圧接着剤層2)に対する第1のカルボン酸エステルの含有割合Bは、例えば、20質量%以上、好ましくは、30質量%以上であり、また、例えば、70質量%以下、好ましくは、50質量%以下である。
基材層3は、感圧接着剤層2の厚み方向一方側に配置されている。具体的には、基材層3は、感圧接着剤層2の厚み方向一方面全面に配置されている。つまり、基材層3は、感圧接着剤層2の厚み方向一方面に接触している。基材層3は、面方向に延びる略平板(シート)形状を有する。これにより、基材層3は、感圧接着剤層2を支持する。基材層3は、基材組成物からなる。
バッキングフィルム5は、生体貼付用積層体1における厚み方向一方面を形成する厚み方向一方側層である。バッキングフィルム5は、基材層3の厚み方向一方面の全面に接触している。バッキングフィルム5は、面方向に延びる略平板(シート)形状を有する。バッキングフィルム5は、基材層3を柔軟に支持できるフィルムからなる。また、バッキングフィルム5は、基材層3の厚み方向一方面を保護する保護層である。また、バッキングフィルム5は、基材層3の作製に供されるフィルムであって、生体貼付用積層体1の使用時には基材層3から剥離される剥離層(第2剥離層)でもある。バッキングフィルム5としては、例えば、PETなどのポリエステルフィルムなどの樹脂フィルム、例えば、ステンレス箔などの金属箔などが挙げられる。好ましくは、樹脂フィルム、より好ましくは、ポリエステルフィルムが挙げられる。バッキングフィルム5の厚みは、例えば、1μm以上、好ましくは、10μm以上であり、また、例えば、200μm以下、好ましくは、100μm以下である。
生体貼付用積層体1を作製するには、まず、剥離層4を用意する。続いて、感圧接着剤層2を、剥離層4の表面に作製する。
上記した一実施形態では、図1に示すように、生体貼付用積層体1は、感圧接着剤層2および基材層3の他に、剥離層4およびバッキングフィルム5を備える。
この生体貼付用積層体1は、生体への貼付に使用される。
生体貼付用積層体1には、優れた耐熱性が求められる場合がある。具体的には、生体貼付用積層体1に上記の各部材が設けられる場合には、例えば、ウェアラブルデバイスの配線形成層のように、配線形成時の加熱後も上記部材が変形しにくい、優れた耐熱性が求められる。ここでいうウェアラブルデバイスとは、例えば、特表2012−508984号公報に記載されるような、伸縮可能な本体部および伸縮可能な電子回路を備える生体貼付型センサなどが挙げられる。
1.感圧接着剤層の作製
特開2003−342541号公報の比較例2に記載に従って、アクリル酸イソノニル(iNA)、アクリル酸メトキシエチル(MEA)およびアクリル酸(AA)からアクリルポリマーを調製した。
ポリエーテルウレタン溶液(商品名「T−8180N」、ポリエーテルウレタンの20質量%溶液(溶媒=メチルエチルケトン:ジメチルホルムアミド=1:1)、ディーアイシーコベストロポリマー社製)と、第2のカルボン酸エステルとしてのトリカプリル酸グリセリル(ケン化価X 355)とを、ポリエーテルウレタンとトリカプリル酸グリセリルとの質量比が100/5となるように、常温で配合し、攪拌混合して、基材層用塗布液を調製した。その後、表面に剥離処理を施したバッキングフィルム5としてのPETフィルムの表面に、乾燥後の厚みが8μmになるように、基材層用塗布液を塗布し、その後、120℃で5分間、乾燥した。これにより、バッキングフィルム5に支持された基材層3を作製した。
感圧接着剤層2と基材層3とを、真空ラミネータにより、60℃で貼り合わせた。
表1に記載の配合処方に従い、基材層3を作製し、続いて、比較例2と同様にして、生体貼付用積層体1を作製した。
「1.基材層の作製」において、第2のカルボン酸エステルを基材層用塗布液に配合しなかった以外は、比較例2と同様にして、生体貼付用積層体を得た。
各実施例および各比較例について、以下の項目を評価し、その結果を、表1に示す。
バッキングフィルム5を剥離した生体貼付用積層体1を、110℃で、1時間加熱した。
有:表面にしわが観察された。
無:表面にしわが観察されなかった。
バッキングフィルム5を剥離した生体貼付用積層体1を、110℃で、1時間加熱した。
2 感圧接着剤層
3 基材層
Claims (5)
- 生体に貼付するための感圧接着剤層と、
前記感圧接着剤層の厚み方向一方面に配置され、前記感圧接着剤層を支持する基材層とを備え、
前記感圧接着剤層は、第1のカルボン酸エステルを含有し、
前記基材層は、第2のカルボン酸エステルを含有し、
前記基材層に対する前記第2のカルボン酸エステルの含有割合Aの、前記感圧接着剤層に対する前記第1のカルボン酸エステルの含有割合Bに対する比(A/B)が、0.44以上、0.5以下であり、
前記感圧接着剤層が、アクリルポリマーを含み、
前記基材層が、ポリエーテルウレタンであることを特徴とする、生体貼付用積層体。 - 前記基材層に対する前記第2のカルボン酸エステルの含有割合Aが、5質量%以上であることを特徴とする、請求項1に記載の生体貼付用積層体。
- 前記第1のカルボン酸エステルおよび前記第2のカルボン酸エステルが、トリ脂肪酸グリセリルであることを特徴とする、請求項1または2に記載の生体貼付用積層体。
- 前記基材層の厚みが、1μm以上、3mm以下であることを特徴とする、請求項1〜3のいずれか一項に記載の生体貼付用積層体。
- 前記第2のカルボン酸エステルのケン化価Xの、前記第1のカルボン酸エステルのケン化価Yに対する比(X/Y)が、0.5以上、2以下であることを特徴とする、請求項1〜4のいずれか一項に記載の生体貼付用積層体。
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US16/333,432 US11090405B2 (en) | 2016-09-15 | 2017-08-10 | Laminate patchable to living body |
PCT/JP2017/029069 WO2018051694A1 (ja) | 2016-09-15 | 2017-08-10 | 生体貼付用積層体 |
TW106128381A TW201814015A (zh) | 2016-09-15 | 2017-08-22 | 生物體貼附用積層體 |
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