JP5434078B2 - 太陽電池裏面封止用シートの製造方法および太陽電池モジュール - Google Patents
太陽電池裏面封止用シートの製造方法および太陽電池モジュール Download PDFInfo
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- JP5434078B2 JP5434078B2 JP2008548217A JP2008548217A JP5434078B2 JP 5434078 B2 JP5434078 B2 JP 5434078B2 JP 2008548217 A JP2008548217 A JP 2008548217A JP 2008548217 A JP2008548217 A JP 2008548217A JP 5434078 B2 JP5434078 B2 JP 5434078B2
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
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Description
・接着改善層/白色ポリエステルフィルム(基材ポリエステルフィルム)/ガスバリアフィルム/耐候性フィルム
・接着改善層/ガスバリア性ポリエステルフィルム(基材ポリエステルフィルム)/白色の耐候性フィルム
・接着改善層/透明ポリエステルフィルム(基材ポリエステルフィルム)/白色の耐候性フィルム
・接着改善層/白色の耐候性ポリエステルフィルム(基材ポリエステルフィルム)
相溶性樹脂層と接着層の膜厚は、接着改善層を設けたフィルムまたはこれと他のフィルムを張り合わせたシートをフィルム面に対して垂直にカッターナイフで切断した小片を作成した。走査型電子顕微鏡で切断面を観察して相溶性樹脂層と接着層の膜厚を測定した。小片の断面部内の3箇所について膜厚を測定し、得られた3つの厚み測定値の平均値を膜厚とした。
JIS K 6854−3(1999年版)に基づいて、エチレン−ビニルアセテート共重合体樹脂との接着力を測定した。測定用サンプルは、太陽電池裏面封止用シートの接着改善層面にエチレンービニルアセテート共重合体フィルム(三井化学ファブロ(株)製 0.7mm厚フィルム)を重ね、さらにその上に厚さ0.3mmの半強化ガラスを重ね、150℃加熱条件下、3Kg/cm2荷重で30分プレス処理をしたものを用いた。試験片の幅は10mmとし、3つの試験片について測定した結果の平均値を接着強度とした。接着強度は2kgw/10mm以上であれば実用上支障がない。
太陽電池裏面封止用シート2枚を接着改善層面が向かい合わない方向で重ね合わせ(すなわち 接着改善層/基材ポリエステルフィルム//接着改善層/基材ポリエステルフィルム)、金属製板上に基材ポリエステルフィルム面が接するように置いた。さらに底面3×4cmの直方体の金属製おもりを2枚のシート上に置き、そのまま気温40℃の環境に65時間放置した。その後、おもりを外し、2枚それぞれを平面に沿った対向方向(おもり底面の長軸方向)に引っ張り、剪断力を測定した。この測定を3つの試験片について行い、その平均値を剪断力とした。ブロッキングが発生しない場合には、剪断力は0、ブロッキングが大きいほど高い値となる。この測定法での剪断力が0.05kgw以下であれば実用上支障がない。
基材ポリエステルフィルムとして、ポリエステルフィルムの片面にアルミナを蒸着したアルミナ蒸着ポリエステルフィルム(東レフィルム加工(株)製バリアロックス(登録商標)1011HG−CR 、12μm厚)を準備した。このアルミナ蒸着ポリエステルフィルムのポリエステルフィルム面上に接着改善層として、下記の接着層及び相溶性樹脂層をこの順に塗工した。塗工は2ヘッドのタンデム型ダイレクトグラビアコーターを用いて、下記条件で塗工した。
主剤 :タケラック (登録商標)A−310 12部(液体)
硬化剤:タケネート (登録商標) A−3 1部 (液体)
上記2液を混合
塗工条件:固形分 膜厚 0.3μm 乾燥条件120℃ 4秒
・相溶性樹脂層:中央理化工業(株)製アクアテックス(登録商標)MC−3800 (エチレンービニルアセテート共重合体エマルジョン)
塗工条件:固形分 膜厚 1.0μm 乾燥条件125℃ 10秒。
エチレンービニルアセテート共重合体樹脂との接着強度の測定とブロッキングの評価を実施したところ、表1に示すように高い接着強度が得られ、ブロッキングの発生もなかった。
基材ポリエステフィルムとして白色ポリエステルフィルム(東レ(株)製ルミラー(登録商標)E20 厚さ50μm)を準備した。この白色ポリエステルフィルムに接着改善層として、実施例1と同様にして接着層及び相溶性樹脂層を塗工した。
しかる後、白色ポリエステルフィルムとアルミナ蒸着ポリエステルフィルム(東レフィルム加工(株)製バリアロックス(登録商標)1011HG−CR 、12μm厚)を、実施例1で使用したものと同じ接着剤を用いてアルミナ蒸着ポリエステルフィルムのアルミナ面と白色ポリエステルフィルム面が対向するようにドライラミネートした。さらにアルミナ蒸着ポリエステルフィルム上に同じ接着剤を用いて、耐候性ポリエステルフィルム(東レ(株)製ルミラー(登録商標)X10S、25μm厚)を積層して、本発明の太陽電池裏面封止用シートを得た。
エチレンービニルアセテート共重合体樹脂との接着強度の測定とブロッキングの評価を実施したところ、表1に示すように高い接着強度が得られ、ブロッキングの発生もなかった。
実施例1において、相溶性樹脂層の固形分膜厚を2.0μmとした以外は実施例1と同じ構成の太陽電池裏面封止用シートを作成した。
実施例1において、相溶性樹脂層の固形分膜厚を0.2μmとした以外は実施例1と同じ構成の太陽電池裏面封止用シートを作成した。
実施例1において、接着層の固形分膜厚を0.2μmとした以外は実施例1と同じ構成の太陽電池裏面封止用シートを作成した。
実施例1において、接着改善層を下記の樹脂及び塗工条件で形成した以外は実施例1と同じ構成の太陽電池裏面封止用シートを作成した。
塗工条件:上記樹脂をトルエン/nーヘキサン=4/1(重量比)の混合溶剤で20重量%に希釈しリバースコータにて塗布し、その後120℃ 30秒で乾燥し、固形膜厚3.5μmとした。
実施例1において、接着改善層を形成しない他は実施例1と同じ構成の太陽電池裏面封止用シートを作成した。
エチレンービニルアセテート共重合体樹脂との接着強度の測定とブロッキングの評価を実施したところ、表1に示すように低い接着強度しか得られなかった。
実施例1において、相溶性樹脂層の固形分膜厚を0.1μmとした以外は実施例1と同じ構成の太陽電池裏面封止用シートを作成した。
実施例1において、相溶性樹脂層の固形分膜厚を3.0μmとした以外は実施例1と同じ構成の太陽電池裏面封止用シートを作成した。しかし、巻き取ったロールサンプルは、相溶性樹脂層と基材反対面がブロッキングを生じた。
実施例2の結果から、本発明の太陽電池裏面封止用シートの構成であれば、基材ポリエステルフィルムとして劈開し易い白色ポリエステルフィルムを用いても実用上支障がない接着強度が得られることが分かる。
比較例1のシートは公知の接着性樹脂をコーティングしたものである。このシートは一定の接着強度を示すが、実用上十分な強度ではないだけでなく、剪断力は大きく、ロールにするとブロッキングを生じるためにロール加工は行えない。
比較例2のシートは接着層及び相溶性樹脂層のいずれも設けないものである。このフィルムはエチレンービニルアセテート共重合体樹脂との接着強度は得られないことがわかる。
比較例3のシートは相溶性樹脂層の厚みが0.1μmと薄く、さらにその塗膜にはじきやムラを生じているために十分な接着強度が得られない。
比較例4のシートは相溶性樹脂層の厚みが3.0μmと厚く、コストが高いだけでなく、塗膜の剪断力が大きくなっているために、シートをロールにするとブロッキングを生じる。
Claims (3)
- 基材ポリエステルフィルムの片面に、相溶性樹脂層と接着層との積層体が接着層をポリエステルフィルム側に向けて積層され、相溶性樹脂層がエチレンービニルアセテート共重合体系樹脂に相溶性のある樹脂で形成され、相溶性樹脂層の膜厚が0.2〜2μmであり、接着層がウレタン系接着剤で形成されたものであり、相溶性樹脂層と接着層の両方を2ヘッドのタンデム型ダイレクトグラビアコーターを用いて、ウエットコート法で形成する、太陽電池裏面封止用シートの製造方法。
- 前記相溶性樹脂層を形成する樹脂が、エチレンービニルアセテート共重合体あるいは、エチレンービニルアセテート共重合体を基本構造とする共重合ポリマーである請求項1に記載の太陽電池裏面封止用シートの製造方法。
- 請求項1または2に記載の太陽電池裏面封止用シートの製造方法で製造された太陽電池裏面封止用シートとエチレンービニルアセテート共重合体系樹脂で形成された充填材層とを含み、太陽電池裏面封止用シートの相溶性樹脂層と充填材層とが面するように積層された太陽電池モジュール。
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JP2008548217A JP5434078B2 (ja) | 2006-11-27 | 2007-11-22 | 太陽電池裏面封止用シートの製造方法および太陽電池モジュール |
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TW201034218A (en) * | 2008-12-26 | 2010-09-16 | Lintec Corp | Rear surface protective sheet for solar cell module |
JP2010167766A (ja) * | 2008-12-27 | 2010-08-05 | Tohcello Co Ltd | ポリ乳酸系ガスバリアフィルム及びその用途 |
KR101349734B1 (ko) * | 2011-04-26 | 2014-01-16 | 율촌화학 주식회사 | 태양전지 모듈용 백 시트 및 이를 포함하는 태양전지 모듈 |
US20140178683A1 (en) * | 2012-12-26 | 2014-06-26 | Nitto Denko Corporation | Sealing sheet |
US20140182778A1 (en) * | 2012-12-26 | 2014-07-03 | Nitto Denko Corporation | Sealing sheet |
CN105874651B (zh) | 2014-01-09 | 2018-06-22 | 株式会社自动网络技术研究所 | 带连接器的电线及其制造方法 |
JP2019177645A (ja) | 2018-03-30 | 2019-10-17 | 東洋製罐グループホールディングス株式会社 | 電子デバイス用バリアフィルム |
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JPH11261085A (ja) * | 1998-03-10 | 1999-09-24 | Mitsubishi Plastics Ind Ltd | 太陽電池用裏面保護シート |
JP2003060218A (ja) * | 2001-08-21 | 2003-02-28 | Toray Ind Inc | 太陽電池裏面封止用フィルムおよびそれを用いた太陽電池 |
JP2004223925A (ja) * | 2003-01-23 | 2004-08-12 | Mitsubishi Plastics Ind Ltd | 積層シート、太陽電池用裏面保護シート、並びに太陽電池及び太陽電池モジュール |
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US5149351A (en) * | 1988-05-24 | 1992-09-22 | Asahi Glass Company Ltd. | Method for making a curved solar panel for an automobile |
JP2000114565A (ja) * | 1998-09-30 | 2000-04-21 | Dainippon Printing Co Ltd | 太陽電池モジュールおよびその製造方法 |
JP2002026354A (ja) | 2000-07-11 | 2002-01-25 | Toray Ind Inc | 太陽電池裏面封止用フィルムおよびそれを用いた太陽電池 |
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JPS60164348A (ja) * | 1984-02-07 | 1985-08-27 | Toppan Printing Co Ltd | 太陽電池モジユ−ル裏面保護シ−ト |
JPH11261085A (ja) * | 1998-03-10 | 1999-09-24 | Mitsubishi Plastics Ind Ltd | 太陽電池用裏面保護シート |
JP2003060218A (ja) * | 2001-08-21 | 2003-02-28 | Toray Ind Inc | 太陽電池裏面封止用フィルムおよびそれを用いた太陽電池 |
JP2004223925A (ja) * | 2003-01-23 | 2004-08-12 | Mitsubishi Plastics Ind Ltd | 積層シート、太陽電池用裏面保護シート、並びに太陽電池及び太陽電池モジュール |
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CN101589475B (zh) | 2012-09-19 |
WO2008069024A1 (ja) | 2008-06-12 |
CN101589475A (zh) | 2009-11-25 |
JPWO2008069024A1 (ja) | 2010-03-18 |
EP2096680A4 (en) | 2010-08-11 |
KR20090085022A (ko) | 2009-08-06 |
EP2096680A1 (en) | 2009-09-02 |
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