JP2009040964A - フィルム及びその製造方法 - Google Patents
フィルム及びその製造方法 Download PDFInfo
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- JP2009040964A JP2009040964A JP2007209962A JP2007209962A JP2009040964A JP 2009040964 A JP2009040964 A JP 2009040964A JP 2007209962 A JP2007209962 A JP 2007209962A JP 2007209962 A JP2007209962 A JP 2007209962A JP 2009040964 A JP2009040964 A JP 2009040964A
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- Prior art keywords
- film
- knurling
- polarizing plate
- polymer
- transparent protective
- Prior art date
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Abstract
【解決手段】 本発明に係るフィルムは、高分子樹脂フィルムの少なくとも何れか一方の面であって、その幅手方向の両端部に、レーザー照射によりナーリング加工が施されて構成されることを特徴とする。
【選択図】 図1
Description
高分子樹脂フィルムとして、幅1300mmのポリメチルメタクリレートフィルム(PMMA)を用い、その幅手方向の両端部に下記の条件下でレーザー照射によりナーリング加工を行った。結果を下記表1に示す。尚、各実施例でのPMMAフィルムの厚さ及びナーリング高さは、下記表1に示す通りとした。
使用したレーザー光照射装置は以下の通りである。
レーザー光源:炭酸ガスレーザー
レーザー波長:9.3μm
最高出力 :20W
レーザー出力:10W
スポット径:300μmφ
ライン速度:40m/min
印字幅(ナーリング加工部):フィルムの端から13mm幅
印字密度(凹部の密度):100個/cm2
ナーリング加工面:片面のみ
印字(凹部)形状:円形状
本実施例では、ナーリング高さを10μmに変更したこと以外は、それぞれ実施例1〜5と同様にして、ナーリング加工を施した。結果を表1に示す。
本実施例では、ナーリング高さを5μmに変更したこと以外は、それぞれ実施例1〜5と同様にして、ナーリング加工を施した。結果を表1に示す。
本比較例では、レーザー照射に替えてロールエンボスによるナーリング加工を行ったこと以外は、前記実施例1と同様にした。結果を表2に示す。尚、各比較例でのPMMAフィルムの厚さ及びナーリング高さは、下記表2に示す通りとした。また、ロールエンボス条件は、下記の通りである。
ナーリングロール:鉄ロール
バックアップロール:鉄ロール
ロール温度:180℃
印字幅(ナーリング加工部):フィルムの端から13mm幅
凹凸の密度:約100個/cm2
線圧:20kgf/cm
彫刻ロール(誘電加熱ロール)形状:ひし形状
本比較例では、ナーリング高さを10μmに変更したこと以外は、それぞれ比較例1〜5と同様にして、ナーリング加工を施した。結果を表2に示す。
本比較例では、ナーリング高さを5μmに変更したこと以外は、それぞれ比較例1〜5と同様にして、ナーリング加工を施した。結果を表2に示す。
本実施例では、PMMAフィルムに替えてノルボルネン系フィルム(商品名;ゼオノア(品番:ZF14)、日本ゼオン(株)製)を用いたこと以外は、それぞれ実施例1〜5と同様にして、ナーリング加工を施した。結果を表3に示す。
本実施例では、ナーリング高さを10μmに変更したこと以外は、それぞれ実施例16〜20と同様にして、ナーリング加工を施した。結果を表3に示す。
本実施例では、ナーリング高さを5μmに変更したこと以外は、それぞれ実施例16〜20と同様にして、ナーリング加工を施した。結果を表3に示す。
本比較例では、PMMAフィルムに替えてゼオノアフィルム(品番:ZF14、日本ゼオン(株)製)を用いたこと以外は、それぞれ比較例1〜5と同様にして、ナーリング加工を施した。結果を表4に示す。
本比較例では、ナーリング高さを10μmに変更したこと以外は、それぞれ比較例16〜20と同様にして、ナーリング加工を施した。結果を表4に示す。
本比較例では、ナーリング高さを5μmに変更したこと以外は、それぞれ比較例16〜20と同様にして、ナーリング加工を施した。結果を表4に示す。
先ず、レーザー照射又はロールエンボスによるナーリング加工の際の破断性を確認した。ナーリング加工中に、ナーリング加工部で割れ、ひび又はノッチ等が発生した場合を破断と判定して×とし、突発的に破断した場合を△、全く破断が生じない場合を○とした。
引張強度(MPa)及び引張伸度(%)は、ASTM D638に準じて測定した。結果を下記表5に示す。
表1及び3から分かる通り、各実施例では、ナーリング加工時において、ナーリング加工部に割れ、ひび、又はノッチ等が全く発生しないことが確認された。また、フィルムの厚みが40μm以上の場合には、ナーリング加工後に耐屈曲試験を行ってもナーリング加工部に破断が発生しなかった。
10、11 フィルム
12 非加工部
13 ナーリング加工部
14 凹部
Claims (9)
- 高分子樹脂フィルムの少なくとも何れか一方の面であって、その幅手方向の両端部に、レーザー照射によりナーリング加工が施されて構成されるフィルム。
- 前記ナーリング加工が施されていない部分の平均厚みをT(μm)とし、前記ナーリング加工が施された両端部での平均厚みTn(μm)とした場合に、
前記T(μm)が20〜70μmの範囲内であり、Tn−Tが3〜30μmの範囲内である請求項1に記載のフィルム。 - 前記高分子樹脂フィルムの引張強度が100MPa以下であり、かつ、引張伸度が80%以下である請求項1又は2に記載のフィルム。
- 前記高分子樹脂フィルムは光学フィルムである請求項1〜3の何れか1項に記載のフィルム。
- 前記光学フィルムは透明保護フィルムである請求項4に記載のフィルム。
- 前記透明保護フィルムは、ノルボルネン系フィルム又はアクリル系フィルムであることを特徴とする請求項5に記載のフィルム。
- 請求項5又は6に記載のフィルムを、偏光子の少なくとも片面に設けた偏光板。
- 高分子樹脂フィルムの少なくとも何れか一方の面であって、その幅手方向の両端部に、所定条件下でレーザーを照射してナーリング加工を施すことを特徴とするフィルムの製造方法。
- レーザー照射の出力を1〜20Wの範囲内にすることを特徴とする請求項8に記載のフィルムの製造方法。
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CNA2008800006250A CN101541865A (zh) | 2007-08-10 | 2008-08-01 | 薄膜及其制造方法 |
KR1020097000599A KR20090073074A (ko) | 2007-08-10 | 2008-08-01 | 필름 및 그 제조 방법 |
US12/440,777 US20100055402A1 (en) | 2007-08-10 | 2008-08-01 | Film, and process for producing the same |
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WO2009022550A1 (ja) | 2009-02-19 |
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KR20090073074A (ko) | 2009-07-02 |
US20100055402A1 (en) | 2010-03-04 |
TW200922980A (en) | 2009-06-01 |
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