JPWO2006112311A1 - 両面接着シート及びパネル積層体 - Google Patents
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- C09J2301/00—Additional features of adhesives in the form of films or foils
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T428/00—Stock material or miscellaneous articles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
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Abstract
Description
なお、本発明における「接着剤」は、感圧接着剤や粘着剤なども包含する意である。
但し、以下に説明する実施形態は本発明の実施形態の一例であって、本発明の範囲が以下の実施形態に制限されるものではない。
本実施形態の両面接着シート1は、図1に示すように、無機酸化物膜層2Bを形成したシート2の一面側に、紫外線で架橋した接着剤層3を形成し、他面側に、加熱又は湿気で硬化(架橋)した接着剤層4を形成した構成を備えたものである。
無機酸化物膜層2Bを形成したシート2は、シート基材2Aの片面又は両面に無機酸化物膜層2Bを形成して高いガスバリヤー性と水蒸気バリヤー性を有するものであり、被着体、例えば合成樹脂板から発生したアウトガスをこの無機酸化物膜層2Bで遮断することができる。
紫外線で架橋した接着剤層3は、被着体表面の凹凸に馴染みながら変形し、低温環境下で柔軟性を維持し、高温環境下で流れない特性を持つ層として形成することができる。
加熱又は湿気により架橋した接着剤層4は、被着体を強固に貼着でき、硬く、保持力の高い層として形成することができ、被着体、例えば合成樹脂板から発生したアウトガスをこの接着剤層4でも遮断し、気泡が残留しないようにすることができる。
両面接着シート1の製造方法は、特に限定するものではなく、例えば上記接着剤をホットメルトコーターなどを用いて離型フィルムに塗布し、シート2に密着積層する方法などがある。
本発明の両面接着シート1は、例えば、以下の用途に使用することができる。
1) 防犯性、安全性、防災の要求される住宅建材用窓、車両・鉄道・船舶・航空機用窓、金融機関の窓、ヘルメット風防、ゴーグル、貴金属や美術品のショーケースなどの合わせガラスの粘着性中間膜。
2) 耐衝撃性、視認性が要求される平面型画像装置(プロジェクタースクリーン、液晶表示、プラズマディスプレイ(PDP)表示、EL表示、SED表示等)の表示パネルや保護パネル、タッチパネル、光学フィルタ、太陽電池パネル、センサー、ゲージ、メーター類の充填材用粘着性中間膜。
3) 防音性、吸音性、制振性の要求される防音壁・ハードディスク筐体・精密機器等の緩衝材用粘着性中間膜。
無機酸化物膜層を形成したシートとして、厚さ25μmの二軸延伸ポリエステル(PET)シートの片面にアルミナ(Al2O3)を蒸着したシート(商品名ファインバリヤーAT;麗光社製)を用いた。
n−ブチルアクリレート78.4重量部、2−エチルヘキシルアクリレート19.6重量部、アクリル酸2.0重量部からなるアクリルモノマーを、酢酸エチル溶剤中で重合開始剤AIBN(ナカライテスク社1級試薬)を用いてランダム共重合させてポリマー溶液を調製し、この溶液から酢酸エチルを脱溶剤して固形のアクリル酸エステル重合体ポリマーを得た。このポリマーは、GPCで測定した重量平均分子量(MW)は2.27×106、重量平均分子量/数平均分子量(MW/MN)は3.6であり、B型粘度計による130℃溶融粘度は25万mPa・sであった。
他面側に形成する層の接着剤として、以下の加熱で架橋した接着剤を用いた以外は、実施例1と同様に両面接着シート及びパネル積層体を作製した。
接着剤層を形成するシートとして、厚さ25μmの二軸延伸ポリエステル(PET)シート(商品名T60−25;東レ社製)を用いた。
無機酸化物膜層を形成したシートとして、実施例1と同様のものを用いた。
n−ブチルアクリレート78.4重量部、2−エチルヘキシルアクリレート19.6重量部、アクリル酸2.0重量部からなるアクリルモノマーを、酢酸エチル溶剤中で重合開始剤AIBN(ナカライテスク社1級試薬)を用いて適宜条件に調整し、ランダム共重合させてポリマー溶液とし、この溶液から酢酸エチルを脱溶剤して固形のアクリル酸エステル重合体ポリマーを得た。このポリマーは、GPCで測定した重量平均分子量(MW)は2.27×106、重量平均分子量/数平均分子量(MW/MN)は3.6、B型粘度計による130℃溶融粘度は25万mPa・sであった。
無機酸化物膜層を形成したシートとして、実施例1と同様のものを用いた。
無機酸化物膜層を形成したシートとして、実施例1と同様のものを用いた。
実施例1と同様の両面接着シートを用い、その一面側、つまり紫外線で架橋した接着剤側に実施例1と同様のポリカーボネート(PC)板を、他面側、つまり湿気で架橋した接着剤側に実施例1と同様のソーダライムガラス板を室温で密着一体化させ、70℃×1MPa×15分でオートクレーブ処理して比較例5のパネル積層体とした。
実施例1−2及び比較例1−5のパネル積層体に対して以下の試験を行った。
(1)耐熱試験・・・80℃の条件下で2週間放置
(2)湿熱試験・・・60℃、90%の条件下で2週間放置
(3)冷熱試験・・・−20℃〜80℃の条件下で2週間放置
上記各試験を終えた後の各パネル積層体を目視により外観観察した。
気泡残留、剥離、板ズレ等の不具合が発生しなかったものを○(良)、前記いずれかの不具合が発生したものを×(不良)と判断した。
Claims (6)
- 無機酸化物膜層を備えたシートのいずれか一面側に、紫外線で架橋した接着剤層を備え、前記一面側とは反対側の他面側に、加熱又は湿気で硬化した接着剤層を備えてなる構成を有する両面接着シート。
- 紫外線で架橋した接着剤層は、厚さ100μm〜2000μmに形成され、加熱又は湿気で硬化した接着剤層は、厚さ10μm〜50μmに形成されることを特徴とする請求項1に記載の両面接着シート。
- 無機酸化物膜層は、シリカ(SiO2)、アルミナ(Al2O3)、酸化亜鉛(ZnO)、インジウム錫酸化物(ITO)、酸化錫(SnO2)、アンチモン錫酸化物(ATO)のいずれか或いはこれらのうち2種以上の組合わせからなる混合物を主材として形成されたものであることを特徴とする請求項1又は2に記載の両面接着シート。
- 前記一面側に形成した接着剤層は、ガラス転移温度(Tg)が−20℃以下で、かつ保持力(JIS Z0237)が2mm〜12mmのズレ長さである接着剤から形成されることを特徴とする請求項1〜3のいずれかに記載の両面接着シート。
- 前記他面側に形成した接着剤層は、ガラス転移温度(Tg)が−20℃以上10℃以下で、かつ保持力(JIS Z0237)が0mm〜0.5mmのズレ長さである接着剤から形成されることを特徴とする請求項1〜4のいずれかに記載の両面接着シート。
- 請求項1〜5のいずれかに記載の紫外線で架橋した接着剤層にガラス板を貼着し、加熱又は湿気で架橋した接着剤層に合成樹脂板を貼着してなる構成を備えたパネル積層体。
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JP2007521200A JP4791467B2 (ja) | 2005-04-13 | 2006-04-12 | 両面接着シート及びパネル積層体 |
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JP2007521200A JP4791467B2 (ja) | 2005-04-13 | 2006-04-12 | 両面接着シート及びパネル積層体 |
PCT/JP2006/307711 WO2006112311A1 (ja) | 2005-04-13 | 2006-04-12 | 両面接着シート及びパネル積層体 |
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JP (1) | JP4791467B2 (ja) |
CN (1) | CN101155890B (ja) |
DE (1) | DE112006000871T5 (ja) |
TW (1) | TW200704741A (ja) |
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US9238353B2 (en) * | 2008-04-23 | 2016-01-19 | Sekisui Chemical Co., Ltd. | Intermediate film for laminated glass and laminated glass |
KR101007471B1 (ko) | 2008-10-08 | 2011-01-12 | 이한준 | 2장의 유리기판을 접합하여 이루어지는 보호커버유리기판의 제조방법 및 평판디스플레이에 적용하는 상기보호커버 유리기판의 사용방법 |
WO2010044229A1 (ja) | 2008-10-15 | 2010-04-22 | 三菱樹脂株式会社 | 透明粘着シートおよび画像表示装置 |
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JP5572431B2 (ja) * | 2010-03-23 | 2014-08-13 | リンテック株式会社 | 平面板貼合用樹脂積層体及び積層平面板 |
CN102471650B (zh) | 2010-04-13 | 2015-12-16 | 三菱树脂株式会社 | 透明两面粘合片 |
KR101768718B1 (ko) * | 2010-11-24 | 2017-08-16 | 주식회사 엘지화학 | 터치패널용 점착제 조성물, 점착필름 및 터치패널 |
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- 2006-04-12 CN CN200680011890XA patent/CN101155890B/zh active Active
- 2006-04-12 WO PCT/JP2006/307711 patent/WO2006112311A1/ja active Application Filing
- 2006-04-13 TW TW095113225A patent/TW200704741A/zh unknown
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TWI355410B (ja) | 2012-01-01 |
JP4791467B2 (ja) | 2011-10-12 |
US20170313031A1 (en) | 2017-11-02 |
CN101155890B (zh) | 2012-06-06 |
US20090022967A1 (en) | 2009-01-22 |
TW200704741A (en) | 2007-02-01 |
DE112006000871T5 (de) | 2008-06-12 |
CN101155890A (zh) | 2008-04-02 |
WO2006112311A1 (ja) | 2006-10-26 |
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