200808550 九、發明說明： 【發明所屬之技術領域】 本發明涉及聚對酞酸乙二酯系樹脂薄膜捲，更詳言之 涉及具有優良加工特性的聚對酞酸乙二酯系樹脂薄膜捲。 【先前技術】 雙軸配向聚對酞酸乙二酯系樹脂膜因優良透明性、尺 寸安定性、耐藥品性，已被利用作各種光學膜。尤適於.有 強度、尺寸安定性等要求之LCD稜鏡片用基膜、防眩膜用 基膜及CRT用破碎防止膜等用途。該雙軸延伸聚對酞酸乙 二酯系樹脂膜係於設有轉速差之輥間經長邊方向延伸後， 在拉幅機內於握持膜端部之狀態下於寬度方向延伸，經熱 固定而製造。此時，膜寬方向端緣部因在熱固定時於長邊 方向不得鬆弛，隨膜寬方向之位置有長邊方向的熱收縮率 差異產生。因此，相對於原捲端緣之分條捲，其寬度方向 之一端緣的熱收縮率（長邊方向之熱收縮率）即大於另一端 緣的熱收縮率。採用如此之分條捲則後加工時的熱處理步 驟中，膜之通過性惡化。有時，膜會被機台框架等擦傷。 而爲防止膜之損傷，後加工條件的調整則係極其費事之工 作。由於以上之理由，僅只原捲端緣以外之分條捲的後加 工條件可不需調整而利用於光學用途。 一方面爲降低後加工成本，寬分條捲之需求日增。’爲 裁取寬分條捲則原捲宜寬。然而，原捲變寬則熱固定之際 難保寬度方向溫度均勻。易言之，位置上、時間上的溫度 變動幅度加大。因而，爲加寬原捲，必須微調熱風吹出量， v 200808550 保持熱固定裝置寬度方向的溫度均勻。即使微調熱風吹出 量，仍難以降低膜端緣部之熱收縮率差至足以充分改善後 加工中的膜之通過性。 目前爲止，本申請人已就膜寬方向熱收縮率差之降低 方法，提議藉以下手段使寬度方向之溫度自中央部至端部 一路提高，使端緣之鬆弛量接近中央部分之鬆弛量（專利文 獻1)。亦即，膜之熱固定步驟中，（1)對於膜行進方向上下 配置於一定間隔之供氣管（熱風吹出口）以連續遮板遮蓋， — (2)該遮板之寬度沿膜行進方向逐漸加大。 專利文獻1 日本專利特開200 1 - 1 38462號公報 本申請人並已就膜寬方向熱收縮率差之降低方法，揭 示膜之熱固定步驟中，於5根供氣管安裝不連續遮板，使 各供氣管每單位時間吹出之熱風量一定，提升吹出自供氣 管之風速，以增加吹抵端部之熱風量（專利文獻2)。 專利文獻2 特開2002-79638 【發明內容】 發明所欲解決之課題 然而，僅於供氣管蓋上連續遮板的專利文獻1之方 法，後加工（塗敷及乾燥）中以1 20°c左右作熱處理，通過性 雖有若干改善，膜端緣之膜鬆弛卻依然不足。亦即，上述 方法在以較長時間（1 〇〜6 0秒）施行1 6 0 °c左右之熱處理時 (硬塗膜之形成等·），於通過性並無多大改善。因而以高溫 長時間作後加工者，有時非調整條件不可，有時甚至無法 作該調整。 200808550 此外，專利文獻1之方法因於熱固定區溫度不勻，製 造l，000m以上之長條膜（原捲）時，產生有膜寬方向熱收縮 率差大的部分。 又，專利文獻2之方法因各供氣管風量一定，各供氣 管風速互異，熱固定裝置內有亂流產生。因此，有熱固定 區溫度大大不勻之缺失。且藉由遮板，寬度方向之熱收縮 率差的降低效果亦仍不足。 本發明之目的在提供，上述問題得解，後加工時熱處 ^ 理步驟中，整捲全長之膜通過性良好的聚對酞酸乙二酯系 樹脂薄膜捲及其製法。 用以解決課題之手段 本發明中，申請專利範圍第1項之發明係，長度3 00m 以上8,000m以下，分條成寬度0.7m以上2.2m以下之聚對 酞酸乙二酯系樹脂膜經捲取而成，捲膜之與捲取方向成45 度角方向的折射率，及捲膜之與捲取方向成1 3 5度角方向 的折射率之差Anab在0.015以上0.060以下的聚對酞酸乙 ® 二酯系樹脂薄膜捲，其於膜捲終端起2m以內設最初試樣切 取部，膜捲開端起2m以內設最終試樣切取部，該等最初及 最終切取部之間每隔九等分長度設試樣切取部，合計設1 0 個試樣切取部時，滿足以下要件（1)〜（3)。（1)於上述各切 取部，自捲寬方向一端緣起5 0mm以內位置及另一端緣起 5 0mm以內位置各切取試樣，就該2試樣求出1 5 0 °C經3 0 分鐘加熱時膜捲取方向之熱收縮率HS150,求出該等HS150 之差（熱收縮率差）時，所有切取部之熱收縮率差皆在0.1% 200808550 以下，（2)於上述各切取部，自捲寬方向一端緣起50mm以 內位置及另一端緣起50mm以內位置各切取試樣，就各試 樣求出HS150時，所有切取部兩端緣的試樣之HS150皆在 0.7%以上2.0%以下，（3)於上述各切取部求出之捲寬方向 一端緣側的H S 1 5 0變動量，及於上述各切取部求出之捲寬 方向另一端緣側之H S 1 5 0變動量，皆在0.2 5 %以下。 申請專利範圍第2項之發明係如申請專利範圍第1項 之發明，其中經捲取之聚對酞酸乙二酯系樹脂膜的厚度在 70μπι以上400μπι以下〇 申請專利範圍第3項之發明係用以製造如申請專利範 圍第1項之聚對酞酸乙二酯系樹脂薄膜捲之方法，包含自 擠壓機熔融擠出原料樹脂以形成未延伸片之膜化步驟、將 該膜化步驟中得之未延伸片於縱向及橫向雙軸延伸的雙軸 延伸步驟及雙軸延伸後之膜的熱固定之熱固定步驟，該熱 固定步驟係於滿足下述要件（4)〜（6)之熱固定裝置中施 行。（4)對於膜行進方向上下相向配置有熱風吹出寬度大之 複數供氣管，（5)於上述複數供氣管安裝有遮蔽熱風吹出口 之遮板，（6)上述各遮板於膜行進方向之尺寸係調整成與膜 行進方向的各供氣管吹出口之尺寸約略相同，上述各遮板 於膜寬方向之尺寸係調整成對於膜行進方向逐漸變長。 申請專利範圍第4項之發明係如申請專利範圍第3項 之發明，其中雙軸延伸步驟係膜於縱向延伸後於橫向延 伸，且該橫延伸的施行區與熱固定裝置之間，設有不吹風 之中間區。 i 200808550 申請專利範圍第5項之發明係如申請專利範圍第3或 4項之發明，其中熱固定裝置係經區分成複數之熱固定區， 且相鄰熱固定區間之溫差與風速差之積，皆經設定成可爲 250°C · m/s 以下。 發明效果 本發明之聚對酞酸乙二酯系樹脂薄膜捲，因在稜鏡片 加工、硬塗加工、AR加工等後加工時，膜通過性非常優異， 後加工良率可爲極高。因此，本發明之聚對酞酸乙二酯系 ^ 樹脂薄膜捲適用作，稜鏡片用基膜、背光用基膜、AR膜用 基膜、CRT用破碎防止膜等光學膜，或後加工之熱處理係 在高溫（160°C左右）以較長時間（10〜60秒）施行的加工用膜。 【實施方式】 構成本發明之聚對酞酸乙二酯系樹脂薄膜捲的薄膜係 以乙二醇及對酞酸爲主要構成成分。在無妨於本發明目的 之範圍內，亦可以其它二羧酸成分及二醇成分共聚。上述 其它二羧酸成分有異酞酸、對-β-羥乙氧基苯甲酸、2,6-萘 二酸、4，4’-二羧基二苯基酮、雙（4-羧苯乙烷）、己二酸、 癸二酸、5-鈉磺酸基異酞酸、環己-1，4-二甲酸等。上述其 它二醇成分有丙二醇、丁二醇、新戊二醇、二甘醇、雙酚 Α等環氧乙烷加成物、聚乙二醇、聚丙二醇、聚四亞甲二 醇等。此外，對羥基苯甲酸等羥基羧酸成分亦可使用。 如此之聚對酞酸乙二酯（以下簡稱PET)之聚合可採如 下方法。（1)使對酞酸及^二醇，及必要時之其它二羧酸成 分及二醇成分直接反應之直接聚合法。（2)使對酞酸之二甲 200808550 酯（必要時包含其它二羧酸之甲酯）及乙二醇（必要時包含其 它二醇成分）行酯交換反應之酯交換法。 由PET形成本發明之薄膜捲時，原料PET之極限黏度 (IV)以0.45〜0.70dl/g爲佳。原料PET之極限黏度在0.45 以上則因膜之延伸性、抗拉斷性提升而較佳。又，極限黏 度在0.7 0 dl/g以下則濾壓適度降低，可作高精度過濾。樹 脂原料之IV可如下求出。 [極限黏度（IV)] 將PET粉碎試樣乾燥後，溶解於酚/ 四氯乙烷=60/40(重量比）之混合溶劑，使用奧氏黏度計於 3〇°C測定濃度0.4(g/dl)之溶液的流下時間，及僅只溶劑之 流下時間。由該等時間比率，利用Huggins公式，假設 Huggins n mm 0.38算出IV。而極限黏度亦可用[η]表示。 又’本發明之薄膜捲係以PET形成時，原料PET之酸 値（AV)以3〜30eq/t爲佳，5〜25eq/t更佳。酸値在3eq/t 以上則聚合速度適度變快，製造效率提升故較佳。又，酸 $ 値在30eq/t以下則水解受到抑制，可得適當聚合度而.較 佳。樹脂原料之酸値可由例如以下方法求出。 [酸値]將原料粉碎後溶解於苯甲醇，加氯仿再以氫 氧化鈉中和滴定，算出P ET每11之氫氧化鈉當量。 以PET形成本發明之薄膜捲時，原料樹脂（包含回收原 料）宜不含雜質。尤以製造光學用薄膜捲時，以於熔融擠壓 .之際進行高精度過濾，調整所製之膜每1 m2中存在的直徑 20 μπι以上之雜質個數至1〇個以下爲佳。進行高精度過濾 時’以使用初始過濾效率9 0 %以上，濾過粒子大小在1 5 μηι -10- 200808550 以下之濾材爲佳。於此，初始過濾效率指依 ANSI/B 93.3 6- 1 973測定之數値。而原料中雜質個數係由例 如以下方法求出。 [雜質個數]使用相位差顯微鏡及CCD照相機，作熔 化原料粒之影像放大攝影，使用影像處理裝置計算雜質個 數。 本發明之聚對酞酸乙二酯系樹脂薄膜捲限於係一度製 成寬幅原捲，經分條而得之分條捲，Anab (捲膜於與捲取方 向成45度角方向之折射率，及捲膜於與捲取方向成135度 角方向之折射率差（絕對値））在〇·〇15以上0.060以下者。 亦即，Anab在0.015以上之差異分條捲，有上述“差異（即 寬度方向之物性差）”問題發生。而Anab在0.060以下之分 條捲，，熱收縮率差等可予調整至滿足本發明之要件。本發 明中之Anab指，分條捲的一端緣起50mm以內位置及另一 端緣起50mm以內位置之Anab各予測定，該2値中之大者。 本發明之聚對酞酸乙二酯系樹脂薄膜捲由後敘方法設 試樣切取部時，自各切取部的捲寬方向一端緣起5 0mm以 內位置及另一端緣起50mm以內位置各切取試樣，就該2 試樣求出1 5 0 °C加熱30分鐘後膜於捲取方向之熱收縮率 HS150,求出熱收縮率差（該等HS150之差），所有切取部之 熱收縮率差必須皆在〇·1 %以下。 亦即，本發明之聚對酞酸乙二酯系樹脂薄膜捲，合計 10個切取部求出之合計個熱收縮率差（自各切取部切取 之膜試樣兩端緣之HS 150的差）必須皆在0.1 %以下。各切 200808550 取部之熱收縮率差在〇 · 1 %以下則後加工當中，膜通過性良 好而較佳。而各切取部之熱收縮率差以在〇·〇8%以下爲更 佳，0 . 〇 6 %以下尤佳。各切取部之熱收縮率差愈低愈佳，但 考慮測定精度則0 . 〇 5 %左右應係極限。 用於H S 1 5 0之測定的膜試樣係切取自依以下手續所設 之10個切取部。（1)於膜捲終端起2m以內設最初試樣切取 部。（2)算出捲膜之長度除以9之値（下稱「切取部間隔」）。 (3)於膜捲終端起各「切取部間隔」前後l〇m以內位置設試 ® 樣切取部。（4)於膜捲開端2m以內位置設最終切取部。 茲更具體說明上述試樣之切取。例如，長度5 00m之薄 膜在復捲時，於膜捲終端起2m以內切取最初試樣（1 )。而 試樣之切取係，包含捲寬方向（與膜捲取方向正交之方向） 的一端緣起50mm以內位置及另一端緣起50mm以內位 置’切取具有沿膜捲取方向（長邊方向）之邊及沿寬度方向 之邊的矩形（而非斜切）。其次，將膜的長度除以9算出「切 • 取部間隔」。「切取部間隔」係算出至“ 1 m”單位。如上， 捲長爲500m時，先自50()m減去設最初切取部得之捲終端 起2m及設最終切取部得之捲開端起2m，將其餘496m九 等分，得「切取部間隔」5 5 m。繼之，於膜捲終端起距開端 側5 5± 10m處切取第2試樣（2)。以下同樣於捲開端側每隔 5 5 m依序切取試樣，得合計丨〇個試樣。亦即，於捲終端起 2m以內位置切取最初試樣（第1試樣），於距捲終端起 附近位置切取第2試樣，於捲終端起丨〗2 m附近位置切取第 3試樣，同樣於捲終端起每隔55m切取第4〜第9試樣，於 -12- 200808550 捲開端起2m以內位置切取最終試樣（第丨〇試樣）。 而本發明之聚對酞酸乙二酯系樹脂薄膜捲在依上述方 法設定試樣切取部時，於各切取部自捲寬方向一端緣起 5 0mm以內位置及另一端緣起50mm以內位置各切取試樣， 就各試樣求出HS150，所有切取部兩端緣試樣之Hsl5〇必 須皆在0.7%以上2.0%以下。 亦即，本發明之聚對酞酸乙二酯系樹脂薄膜捲必須係 於合計10個切取部切取之膜試樣兩端緣HS 150値（合計20 個HS 150値）皆在〇·7%以上2.0%以下。自各切取部切取之 膜試樣兩端的HS 150値在2.0 %以下則後加工時膜通過性良 好而較佳。又，自各切取部切取之膜試樣兩端之HS 150値 在1.5 %以下則更佳，1.2%以下尤佳。自各切取部.切取的膜 試樣兩端之H S 1 5 0値愈低愈佳，但〇 . 7 %左右應係下限。 本發明之聚對酞酸乙二酯系樹脂薄膜捲’各切取部求 出之捲寬方向一端緣側之HS 150變動量，及各切取部求出 之捲寬方向另一端緣側的HS 150變動量必須皆在〇·25 %以 下。 亦即，本發明之聚對酞酸乙二酯系樹脂薄膜捲，自各 切取部切取之10片薄膜，求出一端緣側（寬度方向之一端 緣側）的HS150與另一端緣側（寬度方向之另一端緣側）的 H S 1 5 0時，必須一端緣側之1 〇個H S 1 5 0的變動量（最咼値 與最低値之差）在〇 · 2 5 %以下，且另一端緣側之1 0個H S 1 5 〇 的變動量在〇·2 5 %以下。任一端緣側之10個HS 150的變 動量在0.2 5 %以下則後加工時膜通過性良好而較佳。各端 200808550 緣側之10個HS 150的變動量以在0.20 %以下爲更佳，0.01 8 %以下又更佳，〇 · 〇 1 6 %以下再更佳，〇 . 1 5 %以下尤佳。各端 緣側1 0個HS 1 50之變動量固以愈低愈佳，但考慮測定精度 則應係以0.05 %左右爲極限。 本發明之聚對酞酸乙二酯系樹脂薄膜捲可將原料聚對 酞酸乙二酯系樹脂熔融擠壓得未延伸膜（未延伸積層膜或 未延伸積層片），於縱向（長邊方向）及橫向（寬度方向）雙軸 延伸後捲成捲狀，依後敘方法熱固定而製造。 得未延伸片之合適方法可係，於約2 8 5 °C將熔融聚對 酞酸乙二酯系樹脂經熔融擠壓成片狀，以冷卻輥將熔融片 冷卻固化之方法等。供給於擠壓機的聚對酞酸乙二酯系樹 脂九粒宜經充分乾燥。爲賦予易滑性亦可採用含微粒之聚 對酞酸乙二酯系樹脂。 使片狀熔融物密合於旋轉冷卻鼓之合適方法有例如， 使用氣刀之方法、施加靜電荷之方法等。該等方法中，後 者較佳。 將此片狀熔融物冷卻之方法係例如使片之表面接觸槽 內的冷卻用液體之方法，於片之外露面以噴霧噴嘴塗敷揮 發性液體之方法，亦可倂用吹拂高速氣流以冷卻之方法。 如此得之未延伸片於雙軸方向延伸得膜。 將膜雙軸延伸之方法有，得到之未延伸片以輥或拉幅 機式延伸機於長邊方向延伸後，於與第一延伸方向正交之 寬度方向施行延伸之方法。長邊方向之延伸溫度以7 5〜 1 2 0 °C爲佳，長邊方向之延伸倍率係2 · 5〜4 · 5倍，3 · 0〜4.3 200808550 倍更佳。長邊方向之延伸溫度在7 5 °C以上則膜不易斷裂故 較佳。在120X以下則得到之膜不易有厚度不勻故較佳。 長邊方向之延伸倍率在2 · 5倍以上則於膜之平面性較佳。 而在4.6倍以下則因配向而斷裂頻率低而較佳。 於寬度方向延伸時，延伸溫度必須係8 0〜2 1 0 °C，1 3 0 〜2 0 0°C更佳。寬度方向之延伸溫度在80°C以上則膜不易 斷裂故較佳。在2 1 0°C以下則於得到之膜的平面性較佳。 寬度方向之延伸倍率係3 · 0〜5 · 0倍，3 · 6〜4 · 8倍更佳。寬 ^ 度方向之延伸倍率在3 · 0倍以上則得到之膜不易有厚度不 勻故較佳。寬度方向之延伸倍率在5.0倍以下則因配向而 斷裂頻率降低故較佳。 繼之施行熱固定處理。熱固定處理步驟之溫度以180°C 以上24 0 °C以下爲佳。熱固定處理之溫度在180°C以上則熱 收縮率之絕對値小而較佳。又，熱固定處理溫度在2 4 0 °C 以下則膜不易變成不透明且斷裂頻率降低而較佳。合適之 熱固定處理方法如後敘。 使熱固定處理之握持器的導軌先端窄，則鬆弛處理於 熱收縮率尤以寬度方向之熱收縮率的控制有效。鬆弛處理 溫度係選在熱固定處理溫度至聚對酞酸乙二酯系樹脂膜的 玻璃轉移溫度Tg之範圍，較佳（熱固定處理溫度）-l(TC〜 Tg+10°c。此寬度鬆弛率以1〜6%爲佳。未達1%則效果小， 6%以下則於膜平面性較佳。 於此係說明最初於長邊方向延伸後於寬度方向施行延 伸之方法，但延伸順序可予顛倒。且縱延伸及橫延伸可於 -15- 200808550 各方向單段施行，亦可分二段以上施行。又，如上述 次雙軸延伸之方法以外，亦可採用同時於縱向及橫向 之同時雙軸延伸法。唯爲滿足本發明之特性，最適溫 件、縱橫延伸倍率之掌握皆屬重要，最終得到之膜特 足本發明之要件即可。 爲賦予膜以功能，亦可係具有2層以上之多層構 聚對酞酸乙二酯系樹脂膜。塗敷易滑層、易黏著層之 A層，其反面爲B層，此外之面爲C層，則膜厚方向 H 構造可有A/B、A/C/B或A/C/E/D/B等構造。A〜E各 質可各相同或不同。 構成本發明之聚對酞酸乙二酯系樹脂薄膜捲的薄 度，在用於光學用途時以70μιη以上400μιη以下爲佳 又爲易於取用，薄膜捲之寬度下限以〇.7m以上爲 1 _ 〇m以上更佳。而薄膜捲之寬度上限取決於後加工裝 大小，目前應係以2.2 m爲最大寬度，但2 · 0 m以下較 1.5m以下更佳。而薄膜捲之捲長爲易於捲取、取用， W 厚在70μιη左右時以8,000m以下爲佳，7,000m以下更 當膜厚在400μιη左右時以l，200m以下爲佳，l，l〇〇m 更佳。因此，膜厚在70〜400 μπι間時以設定捲長爲 以上8,00 0m以下爲佳。而捲軸通常可用3吋、6吋、 等之紙、塑膠軸或金屬軸。 本發明之聚對酞酸乙二酯系樹脂膜可具有單層或 以上之積層構造。又，重視透明性而不摻以微粒之雙 伸聚對酞酸乙二酯系樹脂膜，亦可採用製膜時於一面 ，逐 延伸 度條 性滿 造的 面爲 之層 層材 膜厚 〇 〖佳， 置之 佳， 當膜 [佳。 以下 3 00m 8吋 2層 軸延 或兩 -16- 200808550 面賦予種種塗敷以得易黏著性、易滑性者。 構成本發明之薄膜捲的聚對酞酸乙二酯系樹脂膜中， 必要時可添加微粒。此時所添加之微粒有習知無機微粒、 有機微粒。形成膜之樹脂中，必要時可添加各種添加劑， 例如蠟類、抗氧化劑、抗靜電劑、結晶核劑、減黏劑、熱 安定劑、著色用顏料、抗著色劑、紫外線吸收劑等。本發 明中於聚對酞酸乙二酯系樹脂膜添加微粒，使聚對酞酸乙 二酯系樹脂膜之滑性良好則較佳。微粒有例如矽石、氧化 鋁、二氧化鈦、碳酸鈣、高嶺土、硫酸鋇等無機粒子。有 機微粒則有例如丙烯醯系樹脂粒子、三聚氰胺樹脂粒子、 聚矽氧樹脂粒子、交聯聚苯乙烯粒子等。微粒之平均粒徑 在0.05〜2·0μπι之範圍內，可依所需作選擇。 於聚對酞酸乙二酯系樹脂膜配合上述粒子之方法可係 例如於製造聚對酞酸乙二酯系樹脂之階段添加，較佳者爲 酯化階段，或亦可於酯交換反應結束後聚縮合反應開始前 之階段以分散於乙二醇等之漿體添加，進行聚縮合反應。 亦可藉使用附排氣口之混練擠壓機拌合分散於乙二醇或水 等之粒子漿體及聚對酞酸乙二酯系樹脂原料的方法，或使 用混練擠壓機拌合經乾燥之粒子及聚對酞酸乙二酯系樹脂 原料的方法等爲之。 構成本發明之薄膜捲的聚對酞酸乙二酯系樹脂膜，爲 使膜表面之黏著性良好亦可施以電暈處理、火焰處理等。 其次說明製得本發明之聚對酞酸乙二酯系樹脂薄膜捲 的較佳方法。 200808550 通常，延伸後之膜的熱固定處理係在，垂直於長邊方 向配置有複數根具長條狀熱風吹出口之供氣管的熱固定裝 置內實施。如此之熱固定裝置係進行「熱風循環」以使加 熱效率良好。設置於熱固定裝置之循環風扇將空氣吸入熱 固定裝置內，吸入之空氣經調溫再度自供氣管的熱風吹出 口排出。如此施行「吹出熱風—以循環風扇吸入—吸入空氣 之調溫—吹出熱風」之「熱風循環」。 如上述，薄膜捲於寬度方向之熱收縮率差（一端緣之 HS 150與另一端緣的HS 150之差）係在施行熱固定之際因膜 端緣部的鬆驰不足而產生。以如第1圖，熱固定處理中於 各供氣管3、3· •之熱風吹出口 2、2· •的中央部分蓋上 連續大型遮板S之方法（參考特開200 1 - 1 3 8462號公報）， 短膜的後加工當中以較低溫（例如120 °C )處理時通過性獲 改善。可是，長條膜之通過性、後加工之熱處理以高溫（例 如160 °C )施行時的通過性則不見改善。 本發明人等爲理解何以藉第1圖之方法「長條膜之通 過性」、「後加工當中熱處理以高溫施行時之通過性」不 見改善，詳細分析了熱固定裝置內之現象。結果證實，以 跨越複數根供氣管之連續大型遮板蓋上供氣管之熱風吹出 口，則熱氣流爲遮板所限制，上述「熱風循環」進行不均 勻，熱固定裝置內發生溫度紊亂（溫度振盪）。 本發明人等推測，應係由於上述「溫度振盪現象」造 成膜端部熱鬆弛不充分，而「長條膜之通過性」、「後加 工當中熱處理以高溫施行時之通過性」惡化。因之，本發 -18- 200808550 明人等想到藉由使「熱風循環」均勻，應能改善「長條膜 之通過性」及「後加工當中熱處理以高溫施行時之通過 性」。於是，掌握熱固定裝置內之溫度風量條件、遮板之 遮蓋樣態及後加工當中膜之通過性三者之關係，經試誤發 現，製造薄膜捲之際採取下述（1)的手段，「長條膜之通過 性」、「後加工當中熱處理以高溫施行時之通過性」即有 改善之傾向。基於該見解，本發明人等再經試誤發現，採 取下述（1)之手段，並採取下述（2)、（3)之手段，即可得後 加工當中通過性良好之薄膜捲，終於構思出本發明。（1)熱 固定裝置的供氣管之溫度·風量的調節，（2)熱固定裝置的 供氣管之熱風吹出口遮蔽條件的調節，（3)延伸區與熱固定 裝置內之間的加熱之遮斷。以下依序說明上述各手段。 (1)熱固定裝置的供氣管之溫度•風量調節 爲於熱 固定步驟分段.施行加溫•冷卻，熱固定裝置一般係分成溫 度不同之若干區（熱固定區）。製造本發明之薄膜捲時，必 須調節吹出自各供氣管之熱風的溫度、風量，使熱固定裝 置的相鄰熱固定區之間溫度差與風速差之積皆在 2 5 0°C · m/s以下。例如，熱固定裝置分成第1〜3熱固定 區時’係調節使第1區-第2區之間溫度差與風速差之積， 第2區-第3區之間溫度差與風速差之積皆在25〇 〇c .m/s 以下。如此’藉由熱風溫度、風量的調節，「熱風循環」 IP玲ί Θ 後敘以不連續遮板安裝於熱風吹出口之方法組 合’ 「溫度振盪現象」即被有效抑制。藉此初次可得，後 加X當中以高溫施行熱固定處理時通過性良好之長條膜。 -19- 200808550 相鄰熱固定區之間溫度差與風速差之積皆在 25(TC · m/s以下（例如相鄰熱固定區之間溫度差設定爲 2〇°C，同時相鄰熱固定區之間風速差設定爲l〇m/s)則熱固 定裝置之「熱風循環」均勻進行，「溫度振盪現象」可予 有效抑制而較佳。此外，相鄰熱固定區之間溫度差與風速 差之積在25 0°C · m/s以下，則伴隨膜之通過所產生之氣 流，自上游熱固定區流入下游熱固定區之空氣溫差小。因 之，下游熱固定區寬度方向之溫度安定故較佳。又，該溫 度差與風速差之積以200°C · m/s以下爲更佳，150°C · m/s 以下尤佳。如專利文獻2，使各供氣管之風量一定，各供 氣管之風速不同，則生「溫度振盪現象」。本發明中，係 使各區內風速一定，以有效抑制「溫度振盪現象」。 (2)熱固定裝置的供氣管之遮蔽條件的調節 製造本 發明中的薄膜捲之際，不安裝跨於複數供氣管之大型遮 板，而須如第2圖，安裝棒狀遮板S、S · •以將各供氣管 ^ 3、3 · ·之熱風吹出口（噴嘴）2、2 · ·逐一遮蔽。使用如 此之不連續遮板，「熱風循環」均勻進行。不以長度相同 之遮板安裝於各供氣管，自熱固定裝置入口至出口（膜之通 過方向）依序加大遮板長度則較佳（參照第1圖）。如此，藉 調整長度，調整膜端緣部所受之熱風溫度，有助於膜端緣 部應變之消除。而遮板之材質若係可耐熱固定裝置的溫 度，且不污染膜不使膜黏著者即佳，基於熱膨脹則以使用 與供氣管同之材料爲佳。爲以遮板抑制膜端緣部的熱收縮 率至本發明之程度，遮板數目愈多愈佳，15片以上爲宜。 -20- 200808550 (3)延伸區與熱固定裝置內之間的加熱之遮斷（中間區 之設置） 雙軸延伸聚對酞酸乙二酯系樹脂薄膜捲通常 係於縱-橫延伸後，作熱固定處理。製造本發明之薄膜捲 時，宜在縱-橫延伸區與熱固定處理的熱固定裝置之間，設 置不以熱風積極吹拂的中間區。藉此，延伸區與熱固定裝 置之間，加熱完全遮斷。更具體言之，較佳者爲使延伸區 及熱固定裝置在膜的製造時爲同一條件之狀態下，遮斷延 伸區及熱固定裝置的熱風，而於延伸區與熱固定裝置間垂 下小矩形紙片時，該紙片可幾乎完全鉛直下垂。而如此之 中間區可圍以外殼，亦可設成使連續製出之膜外露。較佳 者該中間區的熱風充分遮斷，於熱固定裝置中發揮遮板之 遮蔽效果，後加工時可得良好之膜通過性。 如上，採用上述（1)〜（3)之方法，熱固定裝置的「熱風 循環」即可均勻進行，「溫度振盪現象」予以抑制，結果， 有助於寬度方向端部於長邊方向充分鬆弛，「長條膜之通 過性」、「後加工當中以高溫施行熱處理時之通過性」即 可予改善。上述說明揭示，於設置有供氣管之熱固定裝置 均勻施行「熱風循環」，抑制「溫度振盪現象」之方法。 上述說明雖揭示在生產規模如何於膜賦予熱能以得本發明 之薄膜捲的技術思想，而業界人士可藉其它方法實施該技 術思想’以不同方法亦可得本發明之薄膜捲。亦即，即使 係其它形式之熱固定裝置，只要均勻實行「熱風循環」抑 制「溫度振盪現象」，並賦予膜以足使寬度方向之端緣於 長邊方向充分鬆弛之熱能，即可得如本發明.薄膜捲的「長 200808550 條膜者之通過性」、「後加工當中以高溫施行熱處理時之 通過性」經改善的薄膜捲。 實施例 以下舉實施例詳細說明本發明，但本發明絕非僅限於 該實施例之樣態，在不脫離本發明旨趣之範圍內，可作適 當變更。而膜特性之評估方法如下。 [△nab]自薄膜捲之端緣部（端緣起50mm以內區域）切 取試樣膜。於23 °C，6 5%RH的環境下放置切取之試樣膜2 小時以上。就各試樣膜，使用AT AGO公司製之「4T型阿 貝折射計」測定與膜捲取方向成4 5度角方向之折射率（na) 及與膜捲取方向膜成135度角方向（亦即與上述成45度角 之方向成90度角之方向）的折射率（nb)。由Anab= |na— nb| 算出此2折射率之差的絕對値Anab。測定薄膜捲兩端緣部 之Anab，較大者爲本發明之Δη^。 [膜之熱收縮率] 於膜捲終端起2m以內設最初試樣切取部，膜捲終端起 每隔膜捲長度九等分長度設試樣切取部，並於膜捲開端起 2m以內設最終試樣切取部，於1薄膜捲設合計1 〇個試樣 切取部。就各切取部’自薄膜捲左右端緣部（端緣起5〇mm 以內部分）沿膜捲取方向切取寬2〇mm，長250mm之試樣 膜’由左端緣部、右端緣部各得1 〇個試樣膜。於各試樣膜 以2 0 0 m m間隔畫出標線’放入調節爲1 5 〇 〇c之加熱爐，依 JIS C-23 1 8測定熱收縮量。 [膜之通過性] 依下述方法評估熱處理後膜之平面 •22- 200808550 性。熱處理步驟係使用2輥間< 隔1，9 〇 〇 m m之塗敷機，設定 溫度爲100 9C或160°C，爐內張力ιοοΝ。其次水平配置2 輥使輕間隔爲2,000mm，更於2輥之中央位置配置鐵棒使 其頂面位在輥頂面共同切線下3 Omm之位置。使通過熱處 理步驟之膜以98N之張力通過2輥之間。使膜通過之際， 以i吴不接觸鐵棒者爲〇’接觸鐵棒者爲X。連續施行這些 步驟，目視確認膜是否接觸鐵棒。 又，實施例及比較例中，薄膜捲之製膜條件如表1。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyethylene terephthalate resin film roll, and more particularly to a polyethylene terephthalate resin film roll having excellent processing characteristics. [Prior Art] The biaxially oriented polyethylene terephthalate resin film has been used as various optical films because of its excellent transparency, dimensional stability, and chemical resistance. It is particularly suitable for use in base films for LCD enamels, base films for antiglare films, and breakage prevention films for CRTs, which require strength and dimensional stability. The biaxially-stretched polyethylene terephthalate resin film is stretched in the longitudinal direction in a state in which the end of the film is held in the tenter after the roller having the rotation speed difference is extended in the longitudinal direction. Made by heat fixation. At this time, the edge portion in the film width direction is not slack in the longitudinal direction during heat fixation, and there is a difference in heat shrinkage ratio in the longitudinal direction with the position in the film width direction. Therefore, the heat shrinkage rate (the heat shrinkage ratio in the longitudinal direction) of one end edge in the width direction with respect to the slit roll of the original roll end edge is larger than the heat shrinkage ratio of the other end edge. In such a heat treatment step in the case of post-processing, the film passability is deteriorated. Sometimes the film is scratched by the frame of the machine. In order to prevent damage to the film, the adjustment of the post-processing conditions is extremely troublesome. For the above reasons, only the post-processing conditions of the striped rolls other than the original winding edge can be utilized for optical purposes without adjustment. On the one hand, in order to reduce post-processing costs, the demand for wide-divided strips is increasing. The original volume should be wide for the purpose of cutting wide strips. However, when the original roll is widened, it is difficult to maintain a uniform temperature in the width direction when the heat is fixed. In other words, the temperature changes in position and time increase. Therefore, in order to widen the original roll, it is necessary to finely adjust the amount of hot air blown, v 200808550 to keep the temperature in the width direction of the heat fixing device uniform. Even if the amount of hot air blown is finely adjusted, it is difficult to reduce the difference in heat shrinkage rate at the edge portion of the film enough to sufficiently improve the passability of the film in the post-processing. Heretofore, the applicant has proposed a method for reducing the difference in heat shrinkage rate in the film width direction, and proposes to increase the temperature in the width direction from the center portion to the end portion by the following means, so that the amount of slack in the end edge is close to the amount of slack in the center portion ( Patent Document 1). That is, in the heat-fixing step of the film, (1) the air supply pipe (hot air blowing port) disposed at a certain interval in the film traveling direction is covered with a continuous shutter, (2) the width of the shutter gradually increases along the film traveling direction. Increase. Patent Document 1 Japanese Laid-Open Patent Publication No. 2001- 1 38462. The present applicant has disclosed a method for reducing the difference in thermal shrinkage rate in the film width direction, and discloses a method of thermally fixing a film in which a discontinuous shutter is attached to five gas supply pipes. The amount of hot air blown per unit time of each air supply pipe is made constant, and the wind speed blown from the air supply pipe is increased to increase the amount of hot air blown to the end portion (Patent Document 2). Patent Document 2 JP-A-2002-79638 SUMMARY OF THE INVENTION PROBLEM TO BE SOLVED BY THE INVENTION However, the method of Patent Document 1 in which only a continuous shutter is provided on a gas supply pipe cap, in the post-processing (coating and drying) is 1 20 ° C. The heat treatment is performed on the left and right sides, and although the passability is somewhat improved, the film relaxation at the film edge is still insufficient. That is, the above method does not greatly improve the passability when the heat treatment of about 160 ° C is performed for a long period of time (1 〇 to 60 seconds) (formation of a hard coat film, etc.). Therefore, the post-processing is performed at a high temperature for a long time, and sometimes the non-adjustment condition is not possible, and sometimes the adjustment cannot be made. Further, in the method of Patent Document 1, when the temperature of the heat-fixing zone is not uniform, a long film (original roll) of 10,000 m or more is produced, and a portion having a large difference in thermal shrinkage ratio in the film width direction is generated. Further, in the method of Patent Document 2, since the air volume of each air supply pipe is constant, the wind speeds of the respective air supply pipes are different, and turbulent flow occurs in the heat fixing device. Therefore, there is a lack of temperature unevenness in the heat-fixing zone. Further, by the shutter, the effect of lowering the heat shrinkage ratio in the width direction is still insufficient. SUMMARY OF THE INVENTION An object of the present invention is to provide a polyethylene terephthalate resin film roll having a good film passability and a method for producing the same in the heat treatment step in the post-processing. Means for Solving the Problem In the present invention, the invention of claim 1 is a polyethylene terephthalate resin film having a length of 300 m or more and 8,000 m or less and a strip width of 0.7 m or more and 2.2 m or less. Coiled, the refractive index of the film is 45 degrees in the direction of the winding direction, and the difference between the refractive index of the film and the winding direction in the angular direction of 135 degrees Anab is between 0.015 and 0.060. The bismuth phthalate diester resin film roll is provided with the first sample cutting portion within 2 m from the film winding end, and the final sample cutting portion is provided within 2 m from the film winding end, between the initial and final cutting portions. When the sample cutting portion is provided for every nine equal lengths, and the total number of the sample cutting portions is set to 10, the following requirements (1) to (3) are satisfied. (1) In each of the above-mentioned cutting portions, a sample is cut out from a position within 50 mm from one end edge in the width-width direction and a position within 50 mm from the other end edge, and the sample is heated at 150 ° C for 30 minutes. When the heat shrinkage rate of the film winding direction is HS150, when the difference of the HS150 (the difference in heat shrinkage rate) is obtained, the difference in heat shrinkage rate of all the cut portions is 0.1% and 200808550 or less, and (2) in each of the above-mentioned cutting portions, When the HS150 is obtained for each sample and the HS150 is obtained for each sample, the HS150 of the sample at both ends of the cutting portion is 0.7% or more and 2.0% or less. 3) the amount of fluctuation of HS 1 50 at the one end edge side in the winding width direction obtained by each of the cutting portions, and the amount of fluctuation of HS 1 5 0 on the other end side in the winding width direction obtained by the respective cutting portions are 0.25% or less. The invention of claim 2 is the invention of claim 1, wherein the thickness of the wound polyethylene terephthalate resin film is 70 μm or more and 400 μm or less, and the invention of claim 3 is applied. A method for producing a polyethylene terephthalate resin film roll according to claim 1 of the patent application, comprising a film forming step of melt-extruding a raw material resin from an extruder to form an unstretched sheet, and forming the film In the step, the unstretched sheet is subjected to a biaxial stretching step of biaxial stretching in the longitudinal direction and the transverse direction, and a heat fixing step of heat setting of the biaxially stretched film, the heat fixing step is to satisfy the following requirements (4) to (6) ) is implemented in a thermal fixture. (4) A plurality of air supply pipes having a large hot air blowing width are disposed in the film traveling direction, and (5) a shutter for shielding the hot air blowing port is attached to the plurality of air supply pipes, and (6) the respective shielding plates are in the film traveling direction. The size is adjusted to be approximately the same as the size of each of the air supply pipe outlets in the film advancing direction, and the size of each of the shutters in the film width direction is adjusted to gradually increase in the film traveling direction. The invention of claim 4 is the invention of claim 3, wherein the biaxially extending step film extends in the lateral direction after extending in the longitudinal direction, and the laterally extending execution region and the heat fixing device are provided The middle area does not blow. i 200808550 The invention of claim 5 is the invention of claim 3, wherein the heat fixing device is divided into a plurality of heat fixing zones, and the product of the temperature difference between the adjacent heat fixing zones and the wind speed difference It is set to be 250 ° C · m / s or less. EFFECTS OF THE INVENTION The polyethylene terephthalate resin film roll of the present invention is excellent in film passability after post-processing such as batt processing, hard coating processing, and AR processing, and the post-processing yield can be extremely high. Therefore, the polyethylene terephthalate resin film roll of the present invention is suitable for use as a base film for a ruthenium film, a base film for a backlight, a base film for an AR film, an optical film such as a break prevention film for CRT, or a post-processed film. The heat treatment is a film for processing which is applied at a high temperature (about 160 ° C) for a long time (10 to 60 seconds). [Embodiment] The film constituting the polyethylene terephthalate resin film roll of the present invention is mainly composed of ethylene glycol and p-citric acid. Other dicarboxylic acid components and diol components may also be copolymerized within the scope of the object of the present invention. The other dicarboxylic acid components mentioned above are isophthalic acid, p-β-hydroxyethoxybenzoic acid, 2,6-naphthalenedicarboxylic acid, 4,4′-dicarboxydiphenyl ketone, bis(4-carboxyphenylethane). ), adipic acid, sebacic acid, 5-sodium sulfonate isodecanoic acid, cyclohexa-1,4-dicarboxylic acid, and the like. The above other diol components include ethylene oxide adducts such as propylene glycol, butylene glycol, neopentyl glycol, diethylene glycol, and bisphenol oxime, polyethylene glycol, polypropylene glycol, and polytetramethylene glycol. Further, a hydroxycarboxylic acid component such as p-hydroxybenzoic acid can also be used. The polymerization of such a polyethylene terephthalate (hereinafter abbreviated as PET) can be carried out as follows. (1) A direct polymerization method which directly reacts citric acid and diol, and if necessary, other dicarboxylic acid components and diol components. (2) A transesterification method in which a transesterification reaction is carried out on a dimethyl phthalate 200808550 ester (including a methyl ester of another dicarboxylic acid if necessary) and ethylene glycol (including other diol components as necessary). When the film roll of the present invention is formed from PET, the ultimate viscosity (IV) of the raw material PET is preferably 0.45 to 0.70 dl/g. When the ultimate viscosity of the raw material PET is 0.45 or more, the elongation of the film and the pull-off resistance are improved. Further, when the ultimate viscosity is 0.70 dl/g or less, the filtration pressure is moderately lowered, and high-precision filtration is possible. The IV of the resin raw material can be determined as follows. [Temperature viscosity (IV)] After drying the PET pulverized sample, it was dissolved in a mixed solvent of phenol/tetrachloroethane = 60/40 (weight ratio), and the concentration was measured at 3 ° C using an Oswald viscometer (g). /dl) The down time of the solution, and only the flow time of the solvent. From these time ratios, the Huggins formula is used, assuming Huggins n mm 0.38 to calculate IV. The ultimate viscosity can also be expressed by [η]. Further, when the film roll of the present invention is formed of PET, the acid 値 (AV) of the raw material PET is preferably 3 to 30 eq/t, more preferably 5 to 25 eq/t. When the acid strontium is 3 eq/t or more, the polymerization rate is moderately increased, and the production efficiency is improved, which is preferable. Further, when the acid 値 is 30 eq/t or less, the hydrolysis is suppressed, and a suitable degree of polymerization can be obtained. The acid hydrazine of the resin raw material can be obtained, for example, by the following method. [Acid] The raw material was pulverized, dissolved in benzyl alcohol, and chloroform was added thereto, followed by neutralization titration with sodium hydroxide to calculate a sodium hydroxide equivalent per 11 liters of P ET . When the film roll of the present invention is formed of PET, the raw material resin (including the recovered raw material) is preferably free from impurities. In the case of producing a film roll for optical use, it is preferable to carry out high-precision filtration for melt-squeezing, and it is preferable to adjust the number of impurities having a diameter of 20 μm or more per 1 m2 to 1 or less. When performing high-precision filtration, it is preferable to use a filter material having an initial filtration efficiency of 90% or more and a filtered particle size of 1 5 μηι -10- 200808550 or less. Here, the initial filtration efficiency refers to the number measured in accordance with ANSI/B 93.3 6- 1 973. The number of impurities in the raw material is determined by, for example, the following method. [Number of Impurities] A phase difference microscope and a CCD camera were used to magnify the image of the molten material particles, and the number of impurities was calculated using an image processing device. The polyethylene terephthalate resin film roll of the present invention is limited to a roll which is once made into a wide original roll, which is obtained by slitting, and Anab (the film is refracted at an angle of 45 degrees to the winding direction) The rate and the refractive index difference (absolute 値) of the film in the direction of 135 degrees from the winding direction are 〇·〇15 or more and 0.060 or less. That is, Anab has a difference of 0.015 or more, and the above-mentioned "difference (that is, poor physical property in the width direction)" problem occurs. The Anab is less than 0.060, and the heat shrinkage rate difference can be adjusted to meet the requirements of the present invention. Anab in the present invention means that an Anab at a position within 50 mm from one end of the slit roll and a position within 50 mm from the other end edge are measured, and the larger of the two. When the sample-cutting portion of the polyethylene terephthalate resin film roll of the present invention is provided by the method described later, the sample is cut out from the one end edge of the cut-and-raised portion in the width-width direction at 50 mm and the other end position within 50 mm. The heat shrinkage rate HS150 of the film in the winding direction after heating at 150 ° C for 30 minutes was determined for the two samples, and the difference in heat shrinkage ratio (the difference between these HS150s) was determined, and the heat shrinkage ratio of all the cut portions was required to be poor. All are below 1%. In other words, in the polyethylene terephthalate resin film roll of the present invention, the total heat shrinkage ratio obtained by the total of 10 cut portions is the difference (the difference between the HS 150s at the both end edges of the film sample cut from each of the cut portions) Must be below 0.1%. Each cut 200808550 The heat shrinkage rate difference of the take-up portion is less than 1%, and the film passability is better in the post-processing. The difference in heat shrinkage rate of each of the cut portions is preferably 8% or less, and more preferably 0. 〇 6 % or less. The lower the difference between the heat shrinkage ratios of the cut portions, the better, but the measurement accuracy is 0. 〇 5 % should be the limit. The film sample used for the measurement of H S 1 50 was cut out from 10 cut-out portions provided in the following procedures. (1) The first sample cutting portion is provided within 2 m from the film winding terminal. (2) Calculate the length of the roll film divided by 9 (hereinafter referred to as "cutting portion interval"). (3) Set the test sample cutting section at a position within l〇m from the "cutting interval" of the film winding terminal. (4) The final cut-out portion is provided at a position within 2 m from the open end of the film roll. The cutting of the above sample is more specifically described. For example, when the film having a length of 500 m is rewinded, the first sample (1) is cut out within 2 m from the end of the film roll. The cutting line of the sample includes a side within 50 mm from the one end edge of the roll width direction (the direction orthogonal to the film winding direction) and a position within 50 mm from the other end edge, and has a side along the film winding direction (long side direction). And a rectangle along the edge in the width direction (not a bevel). Next, the length of the film is divided by 9 to calculate the "cutting interval". The "cutting interval" is calculated to "1 m" units. As described above, when the roll length is 500 m, first subtract 2 m from the end of the roll from the first cutting portion and 2 m from the end of the roll at the final cutting portion, and divide the remaining 496 m into nine equal parts to obtain the "cutting interval". 5 5 m. Next, the second sample (2) was cut at a distance of 5 5 ± 10 m from the open end of the film roll terminal. Similarly, the samples were sequentially cut at intervals of 5 5 m on the open side of the roll to obtain a total of one sample. In other words, the first sample (the first sample) is cut at a position within 2 m from the end of the roll, the second sample is cut at a position near the end of the roll, and the third sample is cut at a position near the end of the roll. The fourth to ninth samples were taken every 55 m from the end of the roll, and the final sample (the third sample) was cut out at a position within 2 m from the -12-200808550 winding end. In the case where the sample-cutting portion of the polyethylene terephthalate resin film of the present invention is set as described above, each of the cutting portions is cut at a position within 50 mm from one end edge in the width-width direction and within 50 mm from the other end edge. For example, HS150 is obtained for each sample, and Hsl5〇 of the samples at both ends of all the cut portions must be 0.7% or more and 2.0% or less. That is, the polyethylene terephthalate resin film roll of the present invention must be attached to the total of 10 cut-off portions of the film sample at both ends of the HS 150 値 (total of 20 HS 150 値) at 〇·7% Above 2.0%. When the HS 150 两端 at both ends of the film sample cut out from each of the cut portions is 2.0% or less, the film passability at the time of post-processing is good. Further, it is more preferable that the HS 150 两端 at both ends of the film sample cut out from each of the cut portions is 1.5% or less, and preferably 1.2% or less. From each cutting section, the cut film is H S 1 50 0 at both ends of the sample, the lower the better, but about 7%. In the polyethylene terephthalate resin film roll of the present invention, the amount of variation of the HS 150 on the one end side in the width direction of each of the cut portions and the HS 150 on the other end side in the roll width direction obtained by each of the cut portions The amount of change must be below 25·25%. In other words, in the polyethylene terephthalate resin film roll of the present invention, 10 films cut out from the respective cut portions are obtained, and the HS150 on the one end side (one end side in the width direction) and the other end side (width direction) are obtained. On the other end edge side of HS 1 50, the fluctuation amount (the difference between the last and the lowest )) of 1 〇 HS 1 5 0 on one end side must be less than 2 · 2 5 %, and the other end edge The variation of 1 0 HS 1 5 侧 on the side is less than 25%. When the amount of change of the 10 HSs 150 on either end side is 0.25% or less, the film passability is good at the time of post-processing. The variation of 10 HS 150s on the edge of each end of 200808550 is more preferably 0.20% or less, more preferably 0.018% or less, and even more preferably 〇 · 〇 16% or less, more preferably 15% or less. The variation of the 10 HS 1 50 on each edge side is better, but the measurement accuracy should be about 0.05%. The polyethylene terephthalate resin film roll of the present invention can melt-extrude the raw material polyethylene terephthalate resin into an unstretched film (unstretched laminated film or unstretched laminated sheet) in the longitudinal direction (long side) The direction) and the lateral direction (width direction) are biaxially stretched and rolled into a roll shape, and are manufactured by heat fixation according to the following method. A suitable method for obtaining the unstretched sheet may be a method in which the molten polyethylene terephthalate resin is melt-extruded into a sheet shape at about 2 8 5 ° C, and the molten sheet is cooled and solidified by a cooling roll. The polyethylene terephthalate resin to be supplied to the extruder should be sufficiently dried. In order to impart slipperiness, a particulate polyethylene terephthalate resin may be used. Suitable methods for adhering the sheet-like melt to the rotary cooling drum include, for example, a method using an air knife, a method of applying an electrostatic charge, and the like. Among the methods, the latter is preferred. The method of cooling the sheet-shaped melt is, for example, a method in which the surface of the sheet is brought into contact with the cooling liquid in the tank, a method of applying a volatile liquid by spraying the nozzle outside the sheet, or a method of blowing a high-speed air stream for cooling. The method. The unstretched sheet thus obtained extends in the biaxial direction to form a film. The method of biaxially stretching the film is such that the unstretched sheet is stretched in the longitudinal direction orthogonal to the first extending direction by a roll or tenter type stretching machine in the longitudinal direction. The extension temperature in the long-side direction is preferably 7 5 to 1 2 0 ° C, and the extension ratio in the long-side direction is 2 · 5 to 4 · 5 times, and 3 · 0 to 4.3 200808550 times better. When the elongation temperature in the longitudinal direction is 75 ° C or more, the film is not easily broken, so that it is preferable. It is preferable that the film obtained at 120X or less is less likely to have uneven thickness. When the stretching ratio in the longitudinal direction is 2 · 5 times or more, the planarity of the film is preferable. On the other hand, at 4.6 times or less, the fracture frequency is low due to the alignment, and it is preferable. When extending in the width direction, the extension temperature must be 80 to 2 1 0 ° C, and 1 3 0 to 2 0 0 ° C is better. When the stretching temperature in the width direction is 80 ° C or more, the film is not easily broken, which is preferable. The film properties of the obtained film are preferably at most 20 ° C. The extension ratio in the width direction is 3 · 0 to 5 · 0 times, 3 · 6 to 4 · 8 times better. When the stretching ratio in the width direction is 3 or more times, the film obtained is less likely to have uneven thickness. When the stretching ratio in the width direction is 5.0 or less, the fracture frequency is lowered due to the alignment, which is preferable. Following the heat fixation process. The temperature of the heat setting treatment step is preferably 180 ° C or more and 240 ° C or less. When the temperature of the heat setting treatment is 180 ° C or more, the heat shrinkage rate is absolutely small and preferable. Further, when the heat setting treatment temperature is 2400 ° C or less, the film is less likely to become opaque and the fracture frequency is lowered, which is preferable. Suitable heat fixation treatment methods are described later. When the tip end of the guide of the heat-fixing treatment is narrowed, the relaxation treatment is effective in controlling the heat shrinkage rate particularly in the width direction. The relaxation treatment temperature is selected from the range of the heat setting treatment temperature to the glass transition temperature Tg of the polyethylene terephthalate resin film, preferably (heat setting treatment temperature) - 1 (TC to Tg + 10 ° C. This width The relaxation rate is preferably from 1 to 6%. The effect is less than 1%, and the film is preferably less than 6%. Here, the method of extending in the width direction after extending in the longitudinal direction is described, but the method is extended. The sequence can be reversed, and the longitudinal extension and the horizontal extension can be performed in single direction in each direction of -15-200808550, or in two or more stages. In addition, as in the above method of biaxial stretching, it can also be used in both vertical and horizontal directions. Simultaneous biaxial stretching method in the transverse direction. Only in order to satisfy the characteristics of the present invention, it is important to grasp the optimum temperature component and the vertical and horizontal stretching ratios, and finally obtain a film which is sufficient for the requirements of the present invention. A multilayered polyethylene terephthalate resin film having two or more layers. The layer A of the easy-to-slip layer and the easy-adhesive layer is coated with the B layer on the reverse side and the C layer on the other side. The structure may have a structure such as A/B, A/C/B or A/C/E/D/B. The thinness of the polyethylene terephthalate resin film roll of the present invention is preferably 70 μm or more and 400 μm or less for optical use, and is easy to use, and the lower limit of the width of the film roll is 〇 More than .7m is more preferably 1 _ 〇m or more, and the upper limit of the width of the film roll depends on the size of the post-processing package, and should be 2.2 m as the maximum width, but 2 00 m or less is better than 1.5 m or less. The roll length is easy to take up and take, and the W thickness is preferably 8,000 m or less when the thickness is about 70 μm, and less than 1,500 m when the film thickness is about 4,000 m or less, l, l〇〇m. Preferably, when the film thickness is between 70 and 400 μπι, it is preferable to set the roll length to be more than 8.0 m or less. The reel is usually available in paper of 3 吋, 6 吋, or the like, a plastic shaft or a metal shaft. The poly(ethylene terephthalate) resin film may have a single layer or more laminated structure. Moreover, the transparency may be incorporated without the addition of a micro-doped polyethylene terephthalate resin film, or a film may be used. On one side, the surface of the strip is full of elongation and the thickness of the layer is 〖Good, good, when the film [good. The following 3 00m 8 吋 2 layer axial extension or two-16-200808550 surface to give a variety of coatings for easy adhesion, slippery. constituting the film roll of the present invention In the polyethylene terephthalate resin film, fine particles may be added as necessary. The fine particles to be added at this time are conventional inorganic fine particles or organic fine particles, and various additives such as waxes may be added to the resin forming the film, if necessary. Antioxidant, antistatic agent, crystal nucleating agent, viscosity reducing agent, thermal stabilizer, pigment for coloring, anti-coloring agent, ultraviolet absorber, etc. In the present invention, fine particles are added to the polyethylene terephthalate resin film to make The polyethylene terephthalate resin film is preferably excellent in slipperiness. The fine particles are inorganic particles such as vermiculite, alumina, titania, calcium carbonate, kaolin, barium sulfate or the like. The organic fine particles include, for example, acrylonitrile-based resin particles, melamine resin particles, polyoxynized resin particles, and crosslinked polystyrene particles. The average particle diameter of the particles is in the range of 0.05 to 2 · 0 μm, and can be selected as desired. The method of blending the above particles with the polyethylene terephthalate resin film may be, for example, at the stage of producing a polyethylene terephthalate resin, preferably an esterification stage, or may be completed at the end of the transesterification reaction. The stage before the start of the polycondensation reaction is added to a slurry dispersed in ethylene glycol or the like to carry out a polycondensation reaction. Alternatively, a method of mixing a particle slurry of polyethylene glycol or water and a polyethylene terephthalate resin raw material by using a kneading extruder equipped with a vent, or mixing the mixture with a kneading extruder may be used. The method of drying the particles and the raw material of the polyethylene terephthalate resin is the same. The polyethylene terephthalate resin film constituting the film roll of the present invention may be subjected to corona treatment, flame treatment or the like in order to improve the adhesion of the film surface. Next, a preferred method of producing the polyethylene terephthalate resin film roll of the present invention will be described. 200808550 Generally, the heat setting treatment of the stretched film is carried out in a heat fixing device in which a plurality of air supply pipes having a long hot air outlet are disposed perpendicularly to the longitudinal direction. Such a heat fixing device performs a "hot air circulation" to improve the heating efficiency. The circulating fan disposed in the heat fixing device sucks air into the heat fixing device, and the sucked air is tempered again and discharged from the hot air blowing port of the air supply pipe. In this way, "hot air circulation" is performed by "blowing hot air - inhalation by a circulating fan - temperature regulation of inhaling air - blowing hot air". As described above, the difference in heat shrinkage ratio of the film roll in the width direction (the difference between the HS 150 at one end edge and the HS 150 at the other end edge) is caused by insufficient relaxation of the film edge portion at the time of heat setting. As shown in Fig. 1, a method of covering a central portion of the hot air outlets 2, 2·· of each of the air supply pipes 3, 3·· in the heat fixing process is carried out by means of a large large shutter S (refer to Special Opening 200 1 - 1 3 8462) No.), the passability of the short film after processing at a lower temperature (for example, 120 ° C) is improved. However, the passability of the long film and the heat treatment of the post-processing at a high temperature (e.g., 160 ° C) are not improved. The inventors of the present invention have not yet improved the "passage of the long film" by the method of Fig. 1, and the "passivity when the heat treatment is performed at a high temperature in the post-processing", and the phenomenon in the heat-fixing device is analyzed in detail. As a result, it was confirmed that the hot air flow was blocked by the continuous large-sized shutter across the plurality of gas supply pipes, and the hot air flow was restricted by the shutter. The above-mentioned "hot air circulation" was uneven, and temperature disturbance occurred in the heat fixing device (temperature oscillation). The inventors of the present invention have estimated that the above-mentioned "temperature oscillation phenomenon" causes insufficient thermal relaxation at the end of the film, and the "passage of the long film" and the "passivity when the heat treatment is performed at a high temperature in the post-processing" deteriorate. Therefore, this sensation -18-200808550, the Ming and others, thought that by making the "hot air circulation" uniform, it should be able to improve the "passivity of the long film" and the "passivity when the heat treatment is performed at a high temperature in the post-processing". Therefore, the relationship between the temperature and air volume conditions in the heat-fixing device, the covering state of the shutter, and the passability of the film in the post-processing is grasped, and the following (1) is adopted when the film roll is manufactured. There is a tendency to improve the "passivity of the long film" and the "passivity when the heat treatment is performed at a high temperature in the post-processing". Based on this finding, the inventors of the present invention have found that the film roll having good passability in the post-processing can be obtained by the following means (1) and by the means of the following (2) and (3). The invention has finally been conceived. (1) Adjustment of the temperature and air volume of the air supply pipe of the heat fixture, (2) Adjustment of the shielding condition of the hot air outlet of the air supply pipe of the heat fixture, and (3) Coverage of the heat between the extension zone and the heat fixture Broken. The above various means will be described in order below. (1) Temperature of the air supply pipe of the heat fixing device • Air volume adjustment In order to perform heating and cooling in the heat fixing step, the heat fixing device is generally divided into several zones (heat fixed zone) having different temperatures. When manufacturing the film roll of the present invention, it is necessary to adjust the temperature and air volume of the hot air blown from each air supply pipe so that the product of the temperature difference and the wind speed difference between the adjacent heat fixing zones of the heat fixing device is at 250 ° C · m / s below. For example, when the heat fixing device is divided into the first to third heat fixing zones, the system adjusts the product of the temperature difference between the first zone and the second zone and the wind speed difference, and the temperature difference between the second zone and the third zone and the wind speed difference. The product is below 25〇〇c.m/s. In this way, by the adjustment of the hot air temperature and the air volume, the "hot air circulation" IP Ling Θ Θ 以 以 以 安装 安装 安装 安装 安装 安装 安装 安装 安装 安装 安装 安装 ’ ’ 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 This is the first time available, followed by the addition of a long strip film with good passability at high temperatures. -19- 200808550 The product of temperature difference and wind speed difference between adjacent heat-fixing zones is below 25 (TC · m / s (for example, the temperature difference between adjacent heat-fixing zones is set to 2 ° ° C, while adjacent heat When the wind speed difference between the fixed sections is set to l〇m/s), the "hot air circulation" of the heat fixing device is uniformly performed, and the "temperature oscillation phenomenon" can be effectively suppressed. Further, the temperature difference between the adjacent heat fixing zones is further improved. If the product of the wind speed difference is below 25 °C · m / s, the air temperature generated by the passage of the film, the temperature difference of the air flowing from the upstream heat fixing zone into the downstream heat fixing zone is small. Therefore, the width direction of the downstream heat fixing zone Further, it is preferable that the temperature difference and the wind speed difference are 200 ° C · m / s or less, more preferably 150 ° C · m / s or less. As in Patent Document 2, each gas supply pipe is provided. In the present invention, the wind speed is constant in each zone to effectively suppress the "temperature oscillation phenomenon". (2) The gas supply pipe of the heat fixing device is constant. Adjustment of the shielding condition, when manufacturing the film roll in the present invention, does not install across the complex For the large-sized shutters of the air supply pipe, as shown in Fig. 2, the rod-shaped shutters S, S · · shall be installed to shield the hot air outlets (nozzles) 2, 2 · · of the air supply pipes 3, 3 · · one by one By using such a discontinuous shutter, the "hot air circulation" is performed uniformly. The shutters of the same length are not installed in the air supply pipes, and the length of the shutters is sequentially increased from the inlet to the outlet of the heat fixing device (the direction of passage of the film). Preferably, (refer to Fig. 1). Thus, by adjusting the length, adjusting the temperature of the hot air received at the edge of the film helps to eliminate the strain at the edge of the film, and the material of the shutter is the temperature of the heat-resistant fixture. And it is preferable that the film is not contaminated, and it is preferable to use a material similar to the gas supply pipe based on thermal expansion. In order to suppress the heat shrinkage rate of the edge portion of the film to the extent of the present invention, the number of the shutters is increased. More and more good, more than 15 pieces are suitable. -20- 200808550 (3) Interruption of heating between the extension zone and the heat fixture (intermediate zone setting) Biaxially extended poly(ethylene terephthalate) resin film The roll is usually attached to the longitudinal and transverse directions for heat fixation. In the case of the film roll of the invention, it is preferred to provide an intermediate portion which is not actively blown by hot air between the longitudinal-transverse extension region and the heat-fixing heat-fixing device, whereby the heating is completely interrupted between the extension region and the heat fixing device. More specifically, it is preferable that the extension zone and the heat fixing device are in the same condition when the film is manufactured, the hot air of the extension zone and the heat fixing device is blocked, and the extension zone and the heat fixture are suspended. In the case of a small rectangular piece of paper, the piece of paper may sag almost completely vertically, and such an intermediate portion may surround the outer casing, or may be designed to expose the continuously produced film. Preferably, the hot air in the intermediate portion is sufficiently blocked for heat fixation. In the device, the shielding effect of the shutter is exhibited, and good film passability can be obtained in the post-processing. As described above, the method of (1) to (3) can be used to uniformly perform the "hot air circulation" of the heat fixing device. As a result, it is possible to suppress the end portion in the width direction from being sufficiently slack in the longitudinal direction, and the "passage of the long film" and the "passivity when the heat treatment is performed at a high temperature in the post-processing" can be changed. good. The above description discloses a method of uniformly performing "hot air circulation" in a heat fixing device provided with an air supply pipe to suppress "temperature oscillation phenomenon". The above description reveals the technical idea of how to impart thermal energy to the film to obtain the film roll of the present invention on the production scale, and the person skilled in the art can implement the technical idea by other methods. The film roll of the present invention can also be obtained in different ways. In other words, even if other types of heat-fixing devices are used, it is possible to uniformly perform "hot air circulation" to suppress "temperature oscillation phenomenon" and to impart heat energy sufficient to relax the edge of the width direction in the longitudinal direction. The present invention provides a film roll which is improved in the "passivity of the long-term 200808550 film" and the "passivity in the case of heat treatment at a high temperature in post-processing". EXAMPLES The present invention will be described in detail below with reference to the accompanying examples, but the present invention is not limited to the embodiment, and may be appropriately modified without departing from the scope of the invention. The evaluation method of the film properties is as follows. [△nab] The sample film was cut out from the edge portion of the film roll (the region within 50 mm from the edge). The cut sample film was placed in an environment of 23 ° C and 6 5% RH for 2 hours or more. For each sample film, the "4T-type Abbe refractometer" manufactured by AT AGO Co., Ltd. was used to measure the refractive index (na) at an angle of 45 degrees with respect to the film winding direction and the angle of 135 degrees with the film winding direction film. (i.e., the refractive index (nb) in a direction at an angle of 90 degrees to the direction of the 45 degree angle described above). The absolute 値Anab of the difference between the two refractive indices is calculated from Anab= |na- nb|. The Anab of the both end edges of the film roll was measured, and the larger one was Δη^ of the present invention. [The heat shrinkage rate of the film] The first sample cutting portion is provided within 2 m from the film winding end, and the sample cutting portion is provided at a length of nine equal parts per diaphragm roll end, and is set within 2 m from the film winding end. The final sample cutting portion is wound into one sample cutting portion in one film. Each of the cutting portions 'cuts from the left and right end edges of the film roll (within 5 mm from the end edge) is cut in the film winding direction by a width of 2 mm, and a sample film having a length of 250 mm is obtained from the left end portion and the right end portion. One sample film. The sample line was drawn at intervals of 200 mm at each of the sample films and placed in a heating furnace adjusted to 15 〇 〇c, and the amount of heat shrinkage was measured in accordance with JIS C-23 18 . [Membrane Passivity] The plane of the film after heat treatment was evaluated by the following method. • 22- 200808550. The heat treatment step was carried out using a coater with a roll of 2,9 〇 〇 m m between 2 rolls, and the set temperature was 100 9 C or 160 ° C, and the inside of the furnace was ιοοΝ. Secondly, the horizontal arrangement of 2 rolls makes the light interval 2,000 mm, and the iron rod is placed at the center of the 2 rolls so that the top surface is located at a position of 3 Omm under the common tangent of the top surface of the roll. The film passed through the heat treatment step was passed between two rolls at a tension of 98 N. When the film is passed, the person who does not touch the iron rod is the one that touches the iron rod. These steps were carried out continuously to visually confirm whether the film was in contact with the iron rod. Further, in the examples and comparative examples, the film forming conditions of the film roll are shown in Table 1.
-23- 200808550 表1 薄膜捲之製造條件 膜厚 捲全寬 遮板形狀 遮蔽樣態 熱固定條件 (μπι) (mm) 實施例1 非連續 Α樣態 條件I 100 3000 實施例2 非連續 B樣態 條件Π 100 5000 實施例3 非連續 A樣態 條件I 188 3000 實施例4 非連續 B樣態 條件III 100 5000 實施例5 非連續 A樣態 條件VIII 75 3000 實施例6 非連續 A樣態 條件I 125 3000 實施例7 非連續 A樣態 條件VIII 250 3000 實施例8 非連續 B樣態 條件IX 75 5000 實施例9 非連續 B樣態 條件IX 125 5000 實施例10 非連續 B樣態 條件IX 188 5000 賓施例11 非連續 B樣態 條件IX 250 5000 比較例1 連續 A樣態 條件I 100 3000 比較例2 連續 B樣態 條件IV 100 5000 比較例3 連續 B樣態 條件II 100 5000 比較例4 非連續 C樣態 條件V 100 3000 比較例5 無遮板 無遮板 條件VI 100 3000 比較例6 無遮板 無遮板 條件VII 100 5000 比較例7 非連續 D樣態 條件X 100 3000 [實施例1] 將含添加劑矽石粒子（富士 SILICIA化學 (股）製，SILICI A3 10) 0.03質量％之聚對酞酸乙二酯（[η] = 0.60) -24- 200808550 乾燥至水分率5 Oppm以下。以經乾燥之聚對酞酸乙二酯飼 入擠壓機之料斗，在擠壓機內以2 8 5 °C溫度熔化，於擠壓 機內以不銹鋼燒結體濾材（標稱過濾精度：90%攔截ΙΟμπι 以上之粒子）過濾熔融樹脂。其次，由Τ模擠出熔融樹脂成 片狀，採用施加靜電之澆鑄法捲繞於表面調節爲3 0。(：之澆 f尋鼓。於ί完纟尋鼓冷卻固化得厚度1，3 8 0 μ m之未延伸片。 上述未延伸片以經加熱之輥群及近紅外線加熱器加熱 至100°c，然後，藉周速不同之輥群，往長邊方向連續延 ® 伸3 · 5倍。其次，以夾子夾住該單軸延伸膜之端部，導至 加熱到130°C之熱風區，於寬度方向連續延伸4.0倍。更依 後敘方法以23 8 °C作熱固定處理後，於225 °C作1.7%之橫 向鬆弛處理。將之捲成捲狀，製作厚度ΙΟΟμπι寬3,300mm 之膜6,500m捲成之雙軸配向聚酯膜捲（原捲）。復捲該捲同 時去除兩端部各1 5 0mm，餘留部分重複於寬度方向以三等 分間隔分條，去除原捲表層（捲之終端部分）起約200m，得 6捲寬1，0 0 0 mm，捲長3,010m之分條捲。使用如上得之6 ^ 捲分條捲之中，相當於原捲之一端側（自膜移動之上游望向 下游時之右側）的分條捲，評估薄膜及薄膜捲之特性。評估 結果如表4。 [熱固定處理] 上述熱固定處理係於構造如第3圖 之熱固定裝置施行。熱固定裝置區分有第1〜4區之4個熱 固定區。於第1〜3區各設有8個供氣管a〜X。第4區亦 ^ 設有8個供氣管。各供氣管係於膜行進方向以400mm間隔 上下設置成垂直於膜行進方向。可自供氣管之熱風吹出口 -25- 200808550 (噴嘴）吹拂熱風於經延伸之膜。 實施例1中，a〜0之15根供氣管的熱風吹出口，以 如第2圖之樣態安裝有不連續之棒狀遮板s，s ··。供氣 管a〜〇之熱風吹出口安裝有遮板s，S· ·之熱固定裝置 的俯視模樣如第4圖。所安裝之各遮板S，S ··的長邊方 向之中心，係設定成約略與通過熱固定裝置之膜的寬度中 心一致。又，各遮板S，S ··之長度（所製造之膜的寬度 方向尺寸）係設定成，自熱固定裝置入口至出口逐漸加寬。 • a〜〇之各供氣管的熱風吹出口之遮蔽率（遮板對於熱風吹 出口的遮蔽面積/熱風吹出口之面積）如表2。而實施例1中 遮板之遮蔽樣態即^ A樣態」。 -26- 200808550-23- 200808550 Table 1 Manufacturing conditions of film roll Film thickness roll Full width shutter shape Masking condition Heat setting condition (μπι) (mm) Example 1 Non-continuous Α condition condition I 100 3000 Example 2 Non-continuous B sample State condition Π 100 5000 Example 3 Non-continuous A-like condition I 188 3000 Example 4 Non-continuous B-like condition III 100 5000 Example 5 Non-continuous A-like condition VIII 75 3000 Example 6 Non-continuous A-like condition I 125 3000 Example 7 Non-continuous A-like condition VIII 250 3000 Example 8 Non-continuous B-like condition IX 75 5000 Example 9 Non-continuous B-like condition IX 125 5000 Example 10 Non-continuous B-like condition IX 188 5000 Bins Example 11 Non-continuous B-like condition IX 250 5000 Comparative Example 1 Continuous A-like condition I 100 3000 Comparative Example 2 Continuous B-like condition IV 100 5000 Comparative Example 3 Continuous B-like condition II 100 5000 Comparative Example 4 Non-continuous C-like condition V 100 3000 Comparative Example 5 No-shield-free condition VI 100 3000 Comparative Example 6 No-shield-free condition VII 100 5000 Comparative Example 7 Non-continuous D-like condition X 100 3000 [Examples 1] will Silica additive particles (Fuji Chemical SILICIA (shares) system, SILICI A3 10) 0.03 mass% of polyethylene Terephthalate ([η] = 0.60) -24- 200808550 dried to a moisture content of 5 Oppm less. The dried polyethylene terephthalate is fed into the hopper of the extruder, melted in the extruder at a temperature of 285 ° C, and the stainless steel sintered body filter material is used in the extruder (nominal filtration accuracy: 90 % intercepts particles larger than πμπι) to filter the molten resin. Next, the molten resin was extruded into a sheet shape by a die, and the surface was adjusted to 30 by a casting method using static electricity. (:The pouring of the drum is found. After the ί finished, the drum is cooled and solidified to a thickness of 1,380 μm. The unstretched sheet is heated to 100 °C by a heated roller group and a near-infrared heater. Then, by means of a roller group having different circumferential speeds, the length of the longitudinal extension is extended by 3.5 times. Secondly, the end of the uniaxially stretched film is clamped by a clip to a hot air zone heated to 130 °C. It is continuously extended by 4.0 times in the width direction. It is further heat-fixed at 23 ° C according to the following method, and then subjected to a lateral relaxation treatment of 1.7% at 225 ° C. It is rolled into a roll to make a thickness of ΙΟΟμπι width of 3,300 mm. The film is wound into a biaxially oriented polyester film roll (original roll) of 6,500 m. The roll is re-wound while removing 150 mm at both ends, and the remaining part is repeated in the width direction at intervals of three equal intervals to remove the original roll. The surface layer (the terminal part of the roll) is about 200m, and the 6-volume width is 1,0 0 0 mm, and the roll length is 3,010m. The use of the above-mentioned 6^ volume stripe volume is equivalent to one end of the original volume. The strips on the side (the right side from the upstream of the membrane movement to the downstream) are evaluated for the characteristics of the film and the film roll. 4. [Heat-fixing treatment] The above-mentioned heat-fixing treatment is carried out in a heat-fixing device having a structure as shown in Fig. 3. The heat-fixing device is divided into four heat-fixing regions in the first to fourth regions, and is provided in each of the first to third regions. 8 gas supply pipes a to X. The fourth zone is also provided with 8 gas supply pipes. The gas supply pipes are arranged at a distance of 400 mm from the film advancing direction to be perpendicular to the film traveling direction. The hot air blowing outlets from the gas supply pipe are -25- 200808550 (nozzle) is blowing hot air on the stretched film. In the first embodiment, 15 hot air outlets of the air supply pipe of a to 0 are installed with a discontinuous bar-shaped shutter s, s as in the second figure. ············································································ Is set to approximately coincide with the width center of the film passing through the heat fixing device. Further, the length of each of the shutters S, S · · (the width dimension of the film to be manufactured) is set to be from the inlet to the outlet of the heat fixing device Gradually widened. • A ~ 〇 The shielding rate of the hot air outlet of each air supply pipe (shading plate for hot air) Masking the area of the outlet / area of the outlet of the hot air) in Table 2. As in Example 1 the shielding shutter like state like state i.e. ^ A "implemented. -26-200808550
X ο ο o O ο ο ο 〇 O O o Ο Ο o O Ο ο 1 ο ο o o ο ο ο 〇 o o o Ο Ο o o Ο ο I > ο cn o ο ο ο rn rn m m ο cn rn o ο ο ο ο o o ο ο ο 〇 O O O ο ο o o ο ο Ί-> ο νο νο o Ό Ό ο ο ο VO VD Ό VO v〇 v〇 v〇 VO ο VO ν〇 Ό v〇 o ο ο ο m Ο o m ο ο ο v〇 m v〇 m Ό m V〇 ο <Τ) m v〇 o ο ο ο 〇\ »η o On ο ο ο ON >〇 〇\ ON *r> ON ο σ\ ιη ON ir> o ο ο σ" ο ν〇 o VO Ό ο ο ο VO v〇 v〇 v〇 in ο o ο ο if 德 Oh ο … o m ο ο ο m m m m 们 ο m m o ο ο 賴 S ο οο ON oo οο Ό 00 οο os ON OJN 心 οο m ο ο 顆 α Ον On ΟΝ as ΟΝ Os ON ο ο ε rn ζ； rn rn cn rn Ρ yn ο ο 1 cd ί — ON m 5 ON m δ ON m ON m ON cn ON cn δ ON m ON m ο ο m (Ν Ό m (N VO v〇 m (Ν ν〇 (Ν Ό (Ν νο \〇 cn vo m v〇 m v〇 m (Ν νο m vo m VO CN ο ο 抹 ν〇 CN m VO m (N m ν〇 ΙΛ) VO ι〇 ν〇 «η (N m <N m <N m <N cn ν〇 (N m CN m (N m ο ο U ^bj ·— Os (N ON (N ON (N ON (N ON (M ON (N ON (N ON CM oo ο ο Λ v〇 <N VO (N 苳 SO (N v〇 <N VD CN Ό CN vo (N VO <N ο ο ω) ΟΟ CS CN OO m (N (N οο m οο m οο m CN (N CN <N (N (N (N (N ΟΟ m (N 04 <N CM ο ο «+η <Ν cn o\ (N m ON (Ν ΓΛ (Ν m CN m o\ ON as Q\ (Ν ΓΟ o\ ON VO ο ο 1 0> ν〇 CN VO CN *〇 ν〇 (Ν ν〇 (Ν ν〇 (Ν <r> »〇 T-H 1—( ν〇 <Ν <N VO ο ο ο t> Τ3 (N (N 口 <Ν (N (N ，< cs r-H <N τ—Η (Ν (N cs δ ο ο ο ν〇 Ο 〇s to ON un r-H ON ON CTn 〇\ t-H ON ON rn ο ο Os 寸 χ> Os in 〇\ IT> 〇\ σ\ Os »n »r> ΟΝ 们 <r> Os ο ο οο m c3 m CN m CN m m CN (M (N (N m (N (Ν m oo ο ο 遮蔽 e5 踺 驄 鍛 駿 踺 驄 驗 驄 踺 鍛 « HUK _ m 奪 3i 奪 m m 4JA/ ίϋ 顆 顆 < PQ < 0Q < < < PQ PQ m PQ < PQ PQ U 壊 壊 Q f—Η 孽 (N 孽 m 寸 孽 in VO 孽 卜 OO 羣 〇\ m O r—< 羣 i~l 累 r-H 羣 (N m m 挈 寸 孽 ν〇 摩 卜 握 辑 辑 辑 辑 辑 辑 辑 鎰 鎰 鎰 IK IK U Ιϋ U Ιϋ U U K in 舾 ±Λ i3 jj λλ ΛΛ ΛΛ 200808550 又，實施例1中，熱固 速各調整値如表3。而實施彳 的溫度條件、風速條件係設 差與風速差之積皆在250 °C 〜4區之溫度、風速條件爲 g裝置之第1〜4區的溫度、風 可1的熱固定裝置之第1〜4區 定成，相鄰熱固定區之間溫度 • m/s以下。以實施例1中第1 「條件I」。X ο ο o ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο oo ο ο ο 〇 OO OO & & & & & & & VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO VO ο ο ο v〇mv〇m Ό m V〇ο <Τ) mv〇o ο ο ο 〇 »\ »η o On ο ο ο ON >〇〇\ ON *r> ON ο σ\ ιη ON ir> o ο ο σ " ο ν〇o VO Ό ο ο ο VO v〇v〇v〇in ο o ο ο if de Oh ο ... om ο ο ο mmmm ο mmo ο ο 赖 S ο οο ON oo οο Ό 00 Οο os ON OJN heart οο m ο ο α α Ο On On as ΟΝ Os ON ο ο ε rn ζ; rn rn cn rn Ρ yn ο ο 1 cd ί — ON m 5 ON m δ ON m ON m ON cn ON cn δ ON m ON m ο ο m (Ν Ό m (N VO v〇m (Ν ν〇(Ν Ό (Ν νο \〇cn vo mv〇mv〇m (Ν ν ο m vo m VO CN ο ο 〇ν〇CN m VO m (N m ν〇ΙΛ) VO ι〇ν〇«η (N m <N m <N m <N cn ν〇(N m CN m (N m ο ο U ^bj · - Os (N ON (N ON (N ON (N ON (N ON (N ON CM oo ο ο Λ v〇 < N VO (N 苳SO (N v 〇 N vo vo vo vo vo vo vo vo ΟΟ m (N 04 <N CM ο ο «+η <Ν cn o\ (N m ON (Ν CN (Ν m CN mo\ ON as Q\ (Ν ΓΟ o\ ON VO ο ο 1 0> ν 〇CN VO CN *〇ν〇(Ν ν〇(Ν ν〇(Ν <r> »〇TH 1—( ν〇<Ν <N VO ο ο ο t> Τ3 (N (N port < Ν (N (N , < cs rH < N τ - Η (Ν (N cs δ ο ο ο ν〇Ο 〇s to ON un rH ON ON CTn 〇\ tH ON ON rn ο ο Os χ χ > Os In 〇\IT> 〇\ σ\ Os »n »r>ΟΝ<r> Os ο ο οο m c3 m CN m CN mm CN (M (N (N m (N (Ν m oo ο ο ob ob e5踺骢 踺骢 踺骢 « « « HUK _ m wins 3i wins mm 4JA/ ϋ 颗 &< PQ < 0Q <<< PQ PQ m PQ < PQ PQ U 壊壊Q f - Η 孽 (N 孽m inch 孽 in VO 孽 OO Group 〇\ m O r—< group i~l tired rH group (N mm 挈 inch 孽ν〇摩卜 辑 辑 辑 镒镒镒 镒镒镒 IK IK U Ιϋ U Ιϋ UUK in 舾±Λ i3 jj Λλ ΛΛ ΛΛ 200808550 Further, in Example 1, the thermosetting speeds were adjusted as shown in Table 3. The temperature conditions and wind speed conditions of the implementation of the crucible are both in the temperature range of 250 ° C to 4, the wind speed condition is the temperature of the first to fourth zones of the g device, and the thermal fixing device of the wind can be 1 The first to fourth zones are defined, and the temperature between adjacent heat-fixing zones is less than m/s. Take the first "condition I" in the first embodiment.
-28 _ 200808550 α\ ο ON ο ο On Os 〇 〇 〇 ο ΟΝ Ο Ο On 〇 ο ®旦 m (Ν (Ν τ—4 in CN ^-H CN r-H (Ν Τ—< <Ν ι t νη (Ν ^-Η (Ν ，1 < »rv (N ^*4 CN 1 搬 溫度 (°C) 180 235 180 233 180 180 180 237 237 237 237 180 237 235 180 140 230 1 s x風速差 • m/s) ο ο o Ό ο ο o 〇 ο 〇 ο ο ο ο o 〇 ο I m 〇 气 m - m si m ^ ON ON Ο ON OS ON f-H Os ο ON 〇 ο 囤 m 1¾旦 in m (Ν Ό <Ν <n m (Ν m CN m <N m (Ν (Ν m <Ν (N T—< (Ν 1 搬 溫度 (°C) 225 235 225 228 226 225 226 237 237 237 237 225 237 235 225 180 230 1 s 酲 x風速差 • m/s) (N r—H ο (N 寸 CN ι—Η CN 1—< <N r—< ο ο ο ο (Ν τ-Η ο ο 卜 〇 ο 1 lEl 撇〇 y < —·Η i-H ι-Η CN _ m ^ (Ν wn (Ν (Ν (Ν (Ν ο CN <N 〇 ο ta Ο <Ν 寸 1 < ο (Ν 寸· τ—^ 寸· i—H 寸· T-H Ο (Ν Ο <Ν Ο (Ν Ο (Ν 寸 V—Η (Ν Ο CN (N Η CN 1 (N 撕 溫度 (°C) 238 235 238 225 239 238 239 i 237 23 7 237 237 238 237 235 238 235 230 1 s £e X風速差 • m/s) o (Ν 〇 ν〇 ο o o ΓΛ m m m m m m m ο ο τ—4 (Ν ο 〇 ο 1 fell (N _ u ⑽0W m (Ν r—Η (Ν CN (Ν (Ν (Ν 腾芝 卜 ΟΝ 卜 卜 OS Os ΟΝ Ον 卜 ο Os 卜 〇 ο 16/40 fell r—H 1¾旦 m ι Η m ^Η： m r^Hi m r^< m r—1 (Ν F—ί m r—< VO f ·'( (Ν (Ν 濉 溫度 (°C) 238 200 238 | 200 ί 239 238 239 200 200 200 200 238 200 200 238 220 200 225 熱固定 條件 ΗΗ ΗΗ >—ί > HH H"t > >< >< >< >< ΗΗ > ►—( > ΗΗ > ΗΗ > X #： #： #= #= 涂 #： #= 攀 攀 攀 攀 攀 攀 攀 攀 攀 攀 攀 缕 (Ν m 寸 VO 卜 00 σ\ ο ^-Η r—Η (Μ m 寸 ν〇 卜 m 孽 孽 孽 孽 孽 孽 孽 m 華 孽 镗 習 辑 握 握 辑 键 鎰 鎰 鎰 Ιϋ IK Ιϋ IK IK IK 佩 Μ 1臟 u ίΚ ΛΛ Ϊλ AJ λλ 200808550 [實施例2] 增大擠壓機之擠出量，加大未延伸片之寬度，同時如 表2變更安裝於熱固定裝置之各供氣管熱風吹出口的遮板 之遮蔽率，變更熱固定裝置的第1〜4區之溫度、風速爲如 表3之各調整値以外，如同實施例1得厚度1〇〇μιη，寬 5,300 mm之膜6,500m捲成之原捲。復捲該原/捲同時去除雨 端部各150mm，餘留部分重複於寬度方向作五等分之分 條，去除原捲表層起約2 0 0 m，得寬1，0 0 0 m m，捲長3，0 1 〇 m 之1 0個分條捲。並使用如上得之1 0個分條捲中的相當於 原捲之一端側（自膜移動之上游望向下游時之右側）的分條 捲，評估薄膜及薄膜捲之特性。評估結果如表4。以實施 例2中遮板之遮蔽樣態爲「B樣態」，實施例2中第1〜4 區之溫度、風速條件爲「條件II」。 [實施例3] 增大擠壓機之擠出量，加大未延伸片之厚度至 2,440μηι，同時在以澆鑄鼓冷卻之際倂用1 6 °C的冷卻風， 長邊方向之延伸變更爲3.3倍以外，如同實施例1得厚度 188 μπι，寬3,3 00mm之膜4,500 m捲成之原捲。復捲該原捲 同時去除兩端部各150mm，餘留部分重複於寬度方向以三 等分間隔分條，去除原捲表層起約200m，得寬1，〇 〇〇mm， 捲長2,010m之6個分條捲。並使用與實施例1同位置之分 條捲，評估薄膜及薄膜捲之特性。評估結果如表4。 [實施例4] 變更安裝於熱固定裝置之各供氣管熱風吹出口之遮板 -30- 200808550 使遮蔽率如表2，變更熱固定裝置第1〜4區之溫度、風速 爲如表3之各調整値以外，如同實施例2得10個分條捲。 以實施例4中第1〜4區之溫度、風速條件爲「條件III」。 使用與實施例2同位置之分條捲，評估薄膜及薄膜捲之特 性。評估結果如表4。 [實施例5] 調整未延伸片之牽引速度變更未延伸片之厚度爲 1，03 0μηι，並變更橫向鬆弛處理比率爲2.3%，變更熱固定 ® 裝置第1〜4區之溫度、風速爲如表3之各調整値以外，如 同實施例1得厚度7 5 μ m，寬3，3 0 0 m m之薄膜1 2，3 0 0 m捲成 之原捲。復捲原捲之同時去除兩端部各150 mm，餘留部分 重複於寬度方向以三等分間隔分條，去除原捲表層起約 150m，得寬l，000mm，捲長6,010m之6個分條捲。以實施 例5中第1〜4區之溫度、風速條件爲「條件VIII」。使用 與實施例1同位置之分條捲，評估薄膜及薄膜捲之特性。 評估結果如表4。 ® [實施例6] 調整未延伸片之牽引速度變更未延伸片之厚度爲 1，720μπι以外，如同實施例1得厚度125μηι，寬3,3 00mm 的薄膜6,5 00m捲成之原捲。復捲該原捲之同時去除兩端部 各1 5 0mm，餘留部分重複於寬度方向以三等分間隔分條， 去除原捲表層起約300m，得寬1，〇〇〇 mm，捲長3,010m之6 捲分條捲。並使用與實施例1同位置之分條捲評估薄膜及 薄膜捲之特性。評估結果如表4。 -31 - 200808550 [實施例7] 調整未延伸片之牽引速度變更未延伸片之厚度爲 3，2 5 0 μπι，並在以澆鑄鼓冷卻之際倂用1 6 °C的冷卻風，長 邊方向之延伸變更爲3.3倍，變更熱固定裝置第1〜4區之 溫度、風速條件爲條件VIII以外，如同實施例1得厚度 250 μπι，寬3,300mm之薄膜2,500m捲成之原捲。復捲該原 捲之同時去除兩端部各150mm，餘留部分重複於寬度方向 以三等分間隔分條，去除原捲表層起約 200m，得寬 1，000 mm，捲長1，010m之6捲分條捲。並使用與實施例】 同位置之分條捲評估薄膜及薄膜捲之特性。評估結果如表 4 〇 [實施例8] 調整未延伸片之牽引速度變更未延伸片之厚度爲 1，0 3 0 μ m，並變更橫向鬆驰處理比率爲2.3 %，變更熱固定 裝置第1〜4區之溫度、風速爲如表3之各調整値以外，如 同實施例2得厚度75μπι，寬5,200mm之薄膜1 2,3 00m捲成 之原捲。然後，復捲該原捲之同時去除兩端部各10 0mm， 餘留部分重複於寬度方向以5等分間隔分條之步驟，去除 原捲表層（捲之終端部分）起約2 0 0 m，得寬1，0 0 0 m m，捲長 6,010m之10捲分條捲。以實施例4中第1〜4區之溫度、 風速條件爲「條件IX」。使用與實施例2同位置之分條捲， 評估薄膜及薄膜捲之特性。評估結果如表4。 [實施例9] 調整未延伸片之牽引速度變更未延伸片之厚度爲 -32- 200808550 1，720μιη以外，如同實施例8得厚度125μπι，寬5,200mm 之薄膜6,500m捲成之原捲。復捲該原捲之同時去除兩端部 各100mm，餘留部分重複於寬度方向以5等分間隔分條之 步驟，去除原捲表層起約300m，得寬l，〇〇〇mm，捲長3,010m 之1 〇捲分條捲。並使用與實施例2同位置之分條捲，評估 薄膜及薄膜捲之特性。評估結果如表4。 [實施例10] 調整未延伸片之牽引速度變更未延伸片之厚度爲 ^ 2,440μπι，並在以澆鑄鼓冷卻之際倂用1 6 °C之冷卻風，長 邊方向之延伸變更爲3 · 3倍以外，如同實施例8得厚度 188μπι，寬5,200mm之薄膜4,500m捲成之原捲。復捲該原 捲之同時去除兩端部各100mm，餘留部分重複於寬度方向 以五等分間隔分條，去除原捲表層起約 200m，得寬 1，0 00mm，捲長2,010m之10捲分條捲。並使用與實施例2 同位置之分條捲評估薄膜及薄膜捲之特性。評估結果如表 4 〇 ® [實施例1 1] 調整未延伸片之牽引速度變更未延伸片之厚度爲 3,25 0μηι，並在以澆鑄鼓冷卻之際倂用16°C之冷卻風以外， 如同實施例10得厚度250 μπι，寬5,200mm之薄膜2，50 0m 捲成之原捲。復捲該原捲之同時去除兩端部各100mm，餘 留部分重複於寬度方向以五等分間隔分條，去除原捲表層 起約200m，得寬l，000mm，捲長l，010m之10捲分條捲。 並使用與實施例2同位置之分條捲評估薄膜及薄膜捲之特 -33 - 200808550 性。評估結果如表4。 [比較例1] 熱固定裝置的a〜〇之各供氣管的熱風 吹出口安裝有成爲一體之大型遮板以外，如同實施例1得 6捲分條捲。大型遮板之形狀係調整爲各遮蔽率與實施例] 同。使用與實施例1同位置之分條捲，評估薄膜及薄膜捲 之特性。評估結果如表4。 [比較例2] 變更熱固定裝置第1〜4區之溫度、風 速爲如表3之各調整値，熱固定裝置的a〜v之各供氣管的 H 熱風吹出口安裝有成爲一體之大型遮板以外，如同實施例 2得10捲分條捲。大型遮板之形狀係調整爲各遮蔽率與實 施例2同。以比較例2中第1〜4區之溫度、風速條件爲「條 件IV」。使用與實施例2同位置之分條捲，評估薄膜及薄 膜捲之特性。評估結果如表4。 [比較例3] 變更熱固定裝置第1〜4區之溫度、風 速.爲如表3之各調整値，熱固定裝置的a〜v之各供氣管的 熱風吹出口安裝有成爲一體之大型遮板以外，如同實施例 φ 2得10捲分條捲。大型遮板之形狀係調整爲各遮蔽率與實 施例2同。使用與實施例2同位置之分條捲，評估薄膜及 薄膜捲之特性。評估結果如表4。 [比較例4] 安裝於熱固定裝置的a〜〇之各供氣管 的熱風吹出口之遮板的遮蔽率變更爲如表2，並變更熱固 定裝置第1〜4區之溫度、風速爲如表3之各調整値以外， 如同實施例1得6捲分條捲。比較例4中各遮板於膜寬方 向之長度係調整爲自熱固定裝置的入口至出口逐漸狹窄。 以比較例4中遮板之遮蔽樣態爲「C樣態」，以比較例4 -34- 200808550 中第1〜4區之溫度、風速條件爲「條件V」。並使用與實 施例1同位置之分條捲評估薄膜及薄膜捲之特性。評估結 果如表4。 [比較例5 ] 各供氣管的熱風吹出口不安裝遮板而 實施熱固定，並變更熱固定裝置第1〜4區之溫度、風速爲 如表3之各調整値以外，如同實施例1得6捲分條捲。以 比較例5中第1〜4區之溫度、風速條件爲「條件VI」。 並使用與實施例1同位置之分條捲評估薄膜及薄膜捲之特 _ 性。評估結果如表4。 [比較例6] 各供氣管的熱風吹出口不安裝遮板而 竇施熱固定，並變更熱固定裝置第1〜4區之溫度、風速爲 如表3之各調整値以外，如同實施例2得1 0捲分條捲。以 比較例6中第1〜4區之溫度、風速條件爲「條件VII」。 並使用與實施例2同位置之分條捲評估薄膜及薄膜捲之特 性。評估結果如表4。 [比較例7] 以如同實施例1之料源，調整未延伸片 φ •之牽引速度，並以具5個安裝有不連續遮板之供氣管的熱 固定裝置施行熱固定，並使安裝有遮板之各供氣管的熱風 量一定，變更自每一供氣管吹出之風速，如表1、2、3變 更熱固定裝置之條件以外，如同實施例1得6捲分條捲。 表3之風速係最初供氣管之風速及最後供氣管之風速。以 比較例7中遮板之遮蔽樣態爲「D樣態」，熱固定裝置之 溫度、風速條件爲「條件X」。並使用與實施例1同位置 之分條捲評估薄膜及薄膜捲之特性。評估結果如表4。 -35- 200808550-28 _ 200808550 α\ ο ON ο ο On Os 〇〇〇ο ΟΝ Ο Ο On 〇ο ® 旦 m (Ν (Ν τ—4 in CN ^-H CN rH (Ν Τ—<<<Ν ι t Νη (Ν ^-Η (Ν ,1 < » rv (N ^*4 CN 1 moving temperature (°C) 180 235 180 233 180 180 180 237 237 237 237 180 237 235 180 140 230 1 sx wind speed difference • m /s) ο ο o Ό ο ο o 〇ο 〇ο ο ο ο o 〇ο I m 〇m m - m si m ^ ON ON Ο ON OS ON fH Os ο ON 〇ο 囤m 13⁄4 denier in m (Ν Ό <Ν <nm (Ν m CN m <N m (Ν (Ν m <Ν(NT-< (Ν 1 moving temperature (°C) 225 235 225 228 226 225 226 237 237 237 237 225 225 237 235 225 180 230 1 s 酲x wind speed difference • m/s) (N r—H ο (N inch CN ι—Η CN 1—<<Nr—< ο ο ο ο (Ν τ-Η ο ο 卜 〇 1 lEl 撇〇y < —·Η H iH ι-Η CN _ m ^ (Ν wn (Ν (Ν (Ν Ν CN <N 〇ο ta Ο <Ν inch 1 < ο (Ν inch Τ—^ 寸 · i—H 寸 · TH Ο (Ν Ο <Ν Ο (Ν Ο (Ν V V—Η (Ν Ο CN (N Η CN 1 (N tear temperature (°C) 238 235 238 225 239 238 239 i 237 23 7 237 237 238 237 235 238 235 230 1 s £e X wind speed difference • m/s) o (Ν 〇ν〇ο oo ΓΛ mmmmmmm ο ο τ—4 (Ν ο 〇ο 1 fell (N _ u (10)0W m (Ν r—Η (Ν CN (Ν (Ν (Ν Ν 芝 ΟΝ OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS Mr^Hi mr^< mr-1 (Ν F—ί mr—< VO f ·'( (Ν (Ν 濉 temperature (°C) 238 200 238 | 200 ί 239 238 239 200 200 200 200 238 200 200 238 220 200 225 Hot Fixed Condition ΗΗ ΗΗ >- ί > HH H"t >><><><>< ΗΗ > ►-( > ΗΗ > ΗΗ > X #: #: #= #= 涂#: #= Climbing the Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing Climbing m 孽孽孽孽孽孽孽m 华孽镗习握握Key 镒镒镒Ιϋ IK Ιϋ IK IK IK Μ Μ 1 dirty u Κ ΛΛ Ϊ λ AJ λλ 200808550 [Example 2] Increase the extrusion amount of the extruder, increase the width of the unstretched sheet, and change as shown in Table 2 The shielding rate of the shutters attached to the hot air outlets of the air supply pipes of the heat fixing device is changed, and the temperature and the wind speed of the first to fourth zones of the heat fixing device are changed as shown in Table 3, and the thickness is 1 as in the first embodiment. 〇〇μιη, a film of 6,500m wide, 5,300 mm wide. Rewinding the original/rolling while removing 150mm of each end of the rain, the remaining part is repeated in the width direction for five equal divisions, and the surface layer of the original roll is removed by about 200 m, and the width is 1,0 0 0 mm. 10 strips of 3,0 1 〇m long. The characteristics of the film and the film roll were evaluated using a stripe roll of one of the above-mentioned 10 strips corresponding to one end side of the original roll (the right side from the upstream side of the film movement to the downstream side). The evaluation results are shown in Table 4. The masking state of the shutter in the second embodiment is "B-like", and the temperature and wind speed conditions in the first to fourth regions in the second embodiment are "condition II". [Example 3] Increasing the extrusion amount of the extruder, increasing the thickness of the unstretched sheet to 2,440 μm, and using a cooling air of 16 ° C while cooling with a casting drum, the extension of the longitudinal direction was changed. A film of 4,500 m having a thickness of 188 μm and a width of 3,300 mm was rolled into the original roll as in Example 1. Rewinding the original roll and removing 150mm at both ends, the remaining part is repeated in the width direction at intervals of three equal divisions, and the surface layer of the original roll is removed by about 200m, and the width is 1, 〇〇〇mm, and the length of the roll is 2,010m. 6 strips. The characteristics of the film and the film roll were evaluated using the strips in the same position as in Example 1. The evaluation results are shown in Table 4. [Example 4] The shutters of the hot air outlets of the air supply pipes attached to the heat fixing device were changed -30-200808550. The shielding rate was as shown in Table 2. The temperature and the wind speed in the first to fourth zones of the heat fixing device were changed as shown in Table 3. In addition to each adjustment, 10 strips were obtained as in Example 2. The temperature and the wind speed conditions in the first to fourth regions in the fourth embodiment are "condition III". The characteristics of the film and the film roll were evaluated using the strip roll in the same position as in Example 2. The evaluation results are shown in Table 4. [Example 5] Adjusting the pulling speed of the unstretched sheet, changing the thickness of the unstretched sheet to 1,03 0 μm, and changing the lateral slack processing ratio to 2.3%, and changing the temperature and the wind speed of the first to fourth regions of the heat-fixing device as In addition to the respective adjustments of Table 3, as in Example 1, a film having a thickness of 7 5 μm and a width of 3,300 mm of 1, 2,300 m was wound into a roll. When rewinding the original roll, remove 150 mm at both ends, and the remaining part is repeated in the width direction at intervals of three equal divisions. The surface layer of the original roll is removed by about 150 m, and the width of the original roll is 1,000 mm, and the length of the roll is 6,010 m. Striped volume. The temperature and the wind speed conditions in the first to fourth regions in the fifth embodiment are "condition VIII". The characteristics of the film and film roll were evaluated using a strip roll in the same position as in Example 1. The evaluation results are shown in Table 4. ® [Example 6] The pulling speed of the unstretched sheet was adjusted. The thickness of the unstretched sheet was 1,720 μm, and the film having a thickness of 125 μm and a width of 3,300 mm as in Example 1 was wound into a roll of 6,500 m. After rewinding the original roll, remove 150 mm at both ends, and the remaining part is repeated in the width direction at intervals of three equal divisions. The surface layer of the original roll is removed by about 300 m, and the width is 1, 〇〇〇 mm, and the length of the roll is 3,010m of 6 volume strips. The characteristics of the film and the film roll were evaluated using the strips in the same position as in Example 1. The evaluation results are shown in Table 4. -31 - 200808550 [Embodiment 7] Adjusting the pulling speed of the unstretched sheet The thickness of the unstretched sheet is 3,2 5 0 μπι, and the cooling air of 16 ° C is used while cooling with the casting drum, long side The extension of the direction was changed to 3.3 times, and the temperature of the first to fourth zones of the heat fixing device was changed, and the condition of the wind speed was changed to condition VIII. The original roll of the film of 2,500 m having a thickness of 250 μm and a width of 3,300 mm was obtained as in the first embodiment. Rewinding the original roll while removing 150mm at both ends, the remaining part is repeated in the width direction at intervals of three equal divisions, and the surface layer of the original roll is removed by about 200m, the width is 1,000 mm, and the length of the roll is 1,010m. 6-volume strips. The characteristics of the film and the film roll were evaluated using the strips in the same position as in the examples. The evaluation results are shown in Table 4. 实施 [Example 8] Adjusting the pulling speed of the unstretched sheet The thickness of the unstretched sheet was 1,0 3 0 μm, and the horizontal slack processing ratio was changed to 2.3%, and the heat fixing device was changed. The temperature and the wind speed in the ~4 zone were the same as those in Table 3, and the original roll of the film of the thickness of 75 μm and the width of 5,200 mm of 1, 2,300 m was obtained as in Example 2. Then, the original roll is re-wound while removing 10 mm at both ends, and the remaining portion is repeated in the width direction at intervals of 5 equal divisions, and the surface layer of the original roll (the end portion of the roll) is removed from about 200 mm. It has a width of 1,0 0 0 mm and a volume of 6,010 m. The temperature and wind speed conditions in the first to fourth regions in the fourth embodiment are "condition IX". The characteristics of the film and the film roll were evaluated using the strip roll in the same position as in Example 2. The evaluation results are shown in Table 4. [Example 9] Adjusting the pulling speed of the unstretched sheet The thickness of the unstretched sheet was -32-200808550, 1,720 μm, and the original roll of the film of 6,500 m having a thickness of 125 μm and a width of 5,200 mm as in Example 8. Rewinding the original roll while removing 100 mm at both ends, the remaining part is repeated in the width direction at intervals of 5 equal divisions, and removing the surface layer of the original roll by about 300 m, and the width l, 〇〇〇mm, and the length of the roll 3,010m of 1 volume roll. The characteristics of the film and film roll were evaluated using a strip roll in the same position as in Example 2. The evaluation results are shown in Table 4. [Example 10] The traction speed of the unstretched sheet was adjusted to change the thickness of the unstretched sheet to 2,440 μm, and the cooling air of 16 ° C was used while cooling with the casting drum, and the extension in the longitudinal direction was changed to 3 · In addition to 3 times, a film of 4,500 m in thickness of 188 μm and a width of 5,200 mm was obtained as in Example 8. Rewinding the original roll while removing 100mm at both ends, the remaining part is repeated in the width direction at intervals of five equal divisions, and the surface layer of the original roll is removed by about 200m, the width is 1,0,00mm, and the length of the roll is 2,010m. Volume strips. The characteristics of the film and the film roll were evaluated using the strips in the same position as in Example 2. The evaluation results are shown in Table 4. 〇® [Example 1 1] Adjusting the traction speed of the unstretched sheet The thickness of the unstretched sheet was 3,25 0 μm, and the cooling air of 16 ° C was used while cooling with the casting drum. As in Example 10, a film having a thickness of 250 μm and a width of 5,200 mm of 2,50 0m was rolled into a roll. Rewinding the original roll while removing 100mm at both ends, the remaining part is repeated in the width direction at intervals of five equal divisions, and the surface layer of the original roll is removed by about 200m, and the width is l,000mm, and the length of the roll is 1,010m. Volume strips. The film and film roll were evaluated using the strips in the same position as in Example 2. The evaluation results are shown in Table 4. [Comparative Example 1] A hot roll of the air supply pipe of each of the heat-fixing devices was mounted with a large-sized shutter which was integrated, and a six-volume roll was obtained as in the first embodiment. The shape of the large shutter is adjusted so that the shielding ratio is the same as that of the embodiment. The characteristics of the film and the film roll were evaluated using the slit rolls in the same position as in Example 1. The evaluation results are shown in Table 4. [Comparative Example 2] The temperature and the wind speed in the first to fourth zones of the heat-fixing device were changed as shown in Table 3, and the H hot air outlets of the air supply pipes of the heat fixing devices a to v were integrally fixed. Outside the board, a volume of 10 rolls was obtained as in Example 2. The shape of the large shutter was adjusted so that the respective shielding rates were the same as in the second embodiment. The temperature and wind speed conditions in the first to fourth regions in Comparative Example 2 were "condition IV". The characteristics of the film and the film roll were evaluated using the strip roll in the same position as in Example 2. The evaluation results are shown in Table 4. [Comparative Example 3] The temperature and the wind speed in the first to fourth regions of the heat-fixing device were changed. The adjustments were as shown in Table 3. The hot air outlets of the air supply pipes of the heat-fixing devices a to v were integrally fixed. Outside the plate, 10 rolls of strips were obtained as in the example φ 2 . The shape of the large shutter was adjusted so that the respective shielding rates were the same as in the second embodiment. The characteristics of the film and film roll were evaluated using a strip roll in the same position as in Example 2. The evaluation results are shown in Table 4. [Comparative Example 4] The shielding rate of the shutter attached to the hot air outlet of each of the air supply pipes of the heat fixing device was changed as shown in Table 2, and the temperature and the wind speed of the first to fourth zones of the heat fixing device were changed as follows. In addition to the adjustments of Table 3, a six-volume strip was obtained as in Example 1. In Comparative Example 4, the length of each of the shutters in the film width direction was adjusted to be gradually narrowed from the inlet to the outlet of the heat fixing device. In the comparative example 4, the shielding state of the shutter was "C-like", and the temperature and the wind speed condition in the first to fourth regions of Comparative Example 4 - 34 - 200808550 were "condition V". The characteristics of the film and film roll were evaluated using the strips in the same position as in Example 1. The evaluation results are shown in Table 4. [Comparative Example 5] The hot air blowing port of each air supply pipe was heat-fixed without a shutter, and the temperature and the wind speed of the first to fourth zones of the heat fixing device were changed as in the respective adjustments of Table 3, as in Example 1. 6-volume strips. The temperature and the wind speed conditions in the first to fourth regions in Comparative Example 5 were "condition VI". The characteristics of the film and the film roll were evaluated using the strips in the same position as in Example 1. The evaluation results are shown in Table 4. [Comparative Example 6] The hot air blowing ports of the air supply pipes were not fixed to the sinus, and the sinus was heat-fixed, and the temperature and the wind speed in the first to fourth zones of the heat fixing device were changed as in the respective adjustments of Table 3, as in the second embodiment. Get 10 volumes of strips. The temperature and wind speed conditions in the first to fourth regions in Comparative Example 6 were "condition VII". The characteristics of the film and the film roll were evaluated using the strips in the same position as in Example 2. The evaluation results are shown in Table 4. [Comparative Example 7] The pulling speed of the unstretched sheet φ was adjusted as in the source of Example 1, and heat-fixing was performed by a heat fixing device having five gas supply pipes to which a discontinuous shutter was attached, and the mounting was performed. The amount of hot air of each of the air supply pipes of the shutter is constant, and the wind speed blown from each air supply pipe is changed. As shown in Tables 1, 2, and 3, the conditions of the heat fixing device are changed, and as in the first embodiment, six roll strips are obtained. The wind speed in Table 3 is the wind speed of the initial air supply pipe and the wind speed of the last air supply pipe. In the comparative example 7, the shielding state of the shutter is "D-like", and the temperature and wind speed conditions of the heat fixing device are "condition X". The characteristics of the film and the film roll were evaluated using the slit rolls in the same position as in Example 1. The evaluation results are shown in Table 4. -35- 200808550
寸撇 膜通過性 160°c 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 X X X X X X X 100°C 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 X X X X 長邊方向之熱收縮率變動量 右側 0.10 0.15 τ-Η Ο ι〇 ο Ο 1—ί ο 0.10 ο ?-Η Ο ο ο ο τ—Η Ο ο ο 0.10 0.25 0.30 0.30 0.30 ο ί ·4 Ο 0.15 0.30 左側 〇 1—^ 〇 ο Ο ο 4 Ο ο ν Η ο ο ο ο Ο ο ο Ο 0.10 0.10 ο Ο 0.30 0.25 0.25 0.30 Ο ο to τ—< ο 0.20 嫌 躍ί 岛is 1 f hCL S « S . Φ 右側 ο 1—Η： »〇 ο τ-Η 0.95 ο ι—4 0.95 </Ί Ο r-H 0.95 0.95 0.95 0.90 0.85 ο ο ο r < ι < ο ι '< Ο r—4 ο ，Μ ι ·Η ο r—4 ο (Ν 1 ι 1 ι 1 ι 1 1 ι ι 1 ι ι ι ι 1 ι ι ο 0.95 0.95 ο 0.90 0.95 0.90 0.90 0.90 0.90 0.85 0.95 Ο Ο ι i Ο Ο τ—Η 0.95 0.95 0.95 ΙΟ τ-Η ι—Η 左側 ο ο ο ΟΝ Ο ο ο ο ο ο ο ΟΝ ΟΝ ο ΟΝ ο 〇\ οο ο Ο ι—Η Ο ο Γ· < ο r Η Ό t Η ο ^•Η 1—< ο Ο ο ο ο T—W > ) 1 > ; )、 )、 / / ι 1 ι i ι ί ιη ο Ο ο to ΟΝ Ο ο σ\ ο ο οο ο Ον ο 〇\ ΟΟ ο οο 〇\ Ι/Ί Ο ο ο ο ο 〇\ Ο Ο Ο Ο Ο ο V·—4 ο ο ο Ο ο ο ο 各切取部之熱收縮率差 N Μ νη ο Ο ο ο »〇 ο ο ο τ-Η ιη ο w^v ο ο Ό Ο ο ο Ο r—Η ο < νη ι—Η ο ο ο ο ο Ο ο ο ο Ο ο Ο Ο ο Ο Ο ο Ο 1 ι ι ι ι ι ι ι ι ι ι ι ι ι ι ? ο ο ο ο ο ο ο ο ο ο ο ΙΟ ο ΙΟ ο ο ο ο ο ο ο ν-> Ο ο ο ο τ—( «η τ—4 Ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο Ο ο ο <1 1 0.042 0.037 0.041 0.036 0.044 0,041 0.040 0.038 0.036 0.035 0,035 0.042 0.036 0.037 0.049 0.050 0.038 0.040 實施例1 實施例2 實施例3 實施例4 ι 實施例5 實施例6 實施例7 實施例8 實施例9 實施例10 實施例11 比較例1 比較例2 比較例3 比較例4 比較例5 比較例6 比較例7 _ 9cn· 200808550 [實施例的薄膜之效果] 由表4，實施例之薄膜捲 皆係，貫穿捲全寬之熱收縮率的差（亦即熱收縮率差）小， 而且長邊方向之熱收縮率變動量亦小，後加工時通過彳生貞 好，適於後加工。相對於此，比較例之薄膜捲，貫穿捲全 寬之熱收縮率的差（亦即熱收縮率差）大，而且長邊方向之 熱收縮率變動^量亦大，後加工時通過性不良。 產業上之利用可能性 本發明之聚對酞酸乙二酯系樹脂薄膜捲因具如上優良 加工特性，適用作各種光學構件之光學膜、其它後加工當 中於高溫範圍（160 °C左右）經較長時間（10〜60秒）作熱處理 之加工用膜。 【圖式簡單說明】 第1圖 習知利用遮板之遮蔽樣態的說明圖（a示熱 固定裝置之部分鉛直切面，b示供氣管之熱風吹出口安裝 有遮板之俯視狀態）。 第2圖 本發明中利用遮板之遮蔽樣態的說明圖（a 示熱固定裝置之部分鉛直切面，b示供氣管之熱風吹出口 安裝有遮板之俯視狀態）。 第3圖 用於實施例·比較例之熱固定裝置由上方 透視之狀態的說明圖。 第4圖 實施例1中利用遮板之遮蔽樣態的說明圖。 【元件符號說明】 1 熱固定裝置 2 熱風吹出口 -37- 200808550 3，a 〜x 供氣管 F 薄膜 S 遮板 A 膜捲取方向 Z1 第1區 Z2 第2區 Z3 第3區 Z4 第4區Inch diaphragm passability 160°c 〇〇〇〇〇〇〇〇〇〇〇XXXXXXX 100°C 〇〇〇〇〇〇〇〇〇〇〇〇〇〇XXXX The heat shrinkage rate of the long side direction is 0.10 0.15 on the right side. τ-Η Ο ι〇ο Ο 1—ί ο 0.10 ο ?-Η Ο ο ο ο τ—Η Ο ο ο 0.10 0.25 0.30 0.30 0.30 ο ί ·4 Ο 0.15 0.30 Left side 〇1—^ 〇ο Ο ο 4 Ο ο ν Η ο ο ο ο Ο ο ο Ο 0.10 0.10 ο Ο 0.30 0.25 0.25 0.30 Ο ο to τ—< ο 0.20 跃 ί 岛 is 1 f hCL S « S . Φ Right ο 1—Η: »〇ο τ-Η 0.95 ο ι—4 0.95 </Ί Ο rH 0.95 0.95 0.95 0.90 0.85 ο ο ο r < ι < ο ι '< Ο r—4 ο , Μ ι ·Η ο r—4 ο ( Ν 1 ι 1 ι 1 ι 1 1 ι ι 1 ι 1 ι ι 1 ι ι ο 0.95 0.95 ο 0.90 0.95 0.90 0.90 0.90 0.90 0.85 0.95 Ο Ο ι i Ο Ο τ—Η 0.95 0.95 0.95 ΙΟ τ-Η ι—Η ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο T—W > ) 1 >; ) , ) , / / ι 1 ι i ι ί ιη ο Ο ο to ΟΝ Ο ο σ ο ο ο ο ο ο ο ο 〇 ΟΟ Ί Ι Ί Ί Ί Ι Ί Ί Ί ο ο ο ο 〇 Ο Ο V V V V V V V V V V 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热 热v ο ο Ό Ο ο ο Ο Η Η ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ι ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο Ο ο ο <1 1 0.042 0.037 0.041 0.036 0.044 0,041 0.040 0.038 0.036 0.035 0,035 0.042 0.036 0.037 0.049 0.050 0.038 0.040 Example 1 Example 2 Example 3 Example 4 ι Example 5 Example 6 Implementation Example 7 Example 8 Example 9 Example 10 Example 11 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 _ 9cn· 200808550 [Film of the Example As shown in Table 4, the film roll of the examples is such that the difference in heat shrinkage rate (that is, the difference in heat shrinkage ratio) across the full width of the roll is small, and the amount of change in the heat shrinkage rate in the longitudinal direction is also small, and in the post-processing It is suitable for post-processing by 彳 贞. On the other hand, in the film roll of the comparative example, the difference in the heat shrinkage ratio (that is, the difference in heat shrinkage ratio) of the full width of the roll is large, and the heat shrinkage rate variation in the longitudinal direction is also large, and the passability at the time of post-processing is poor. . INDUSTRIAL APPLICABILITY The polyethylene terephthalate resin film roll of the present invention is suitable for use as an optical film of various optical members and other post-processing in a high temperature range (about 160 ° C) due to the excellent processing characteristics as described above. A film for processing for heat treatment for a long time (10 to 60 seconds). BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a masking state of a shutter (a shows a part of a vertical cut surface of a heat fixing device, and b shows a state in which a heat shield of a gas supply pipe is installed with a shutter). Fig. 2 is an explanatory view showing a masking state of a shutter in the present invention (a shows a part of a vertical cut surface of the heat fixing device, and b shows a state in which the heat blower of the air supply pipe is mounted with a shutter in a plan view). Fig. 3 is an explanatory view showing a state in which the heat fixing device of the embodiment and the comparative example is seen from above. Fig. 4 is an explanatory view showing a masking state using a shutter in the first embodiment. [Explanation of component symbols] 1 Thermal fixture 2 Hot air outlet -37- 200808550 3,a ~x Air supply pipe F Film S Shield A Film winding direction Z1 Zone 1 Z2 Zone 2 Z3 Zone 3 Z4 Zone 4