STRETCHED POLYESTER FILM

To provide a stretched polyester film capable of producing a barrier film excellent in gas barrier property (specifically in water vapor barrier property) even after laminating a barrier coat layer on a vapor-deposited layer of a polyester film and applying desiccation (heating) processing.SOLUTION:...

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Bibliographische Detailangaben
Hauptverfasser:	KONISHI KENTA, IWAHASHI HIROYUKI, KISHIMOTO YOSHIHIRO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	To provide a stretched polyester film capable of producing a barrier film excellent in gas barrier property (specifically in water vapor barrier property) even after laminating a barrier coat layer on a vapor-deposited layer of a polyester film and applying desiccation (heating) processing.SOLUTION: In a stretched polyester film, a thermal shrinkage of the polyester film in a MD direction is 0-1.00%, when measured after holding a polyester film at a temperature of 20°C for 5 minutes while applying a load of 2.92×10N/mper a unit cross-sectional area, raising the temperature at a temperature rising rate of 10°C/min. up to 150°C, holding at the temperature of 150°C for 10 minutes and then lowering the temperature at a temperature falling rate of 10°C/min. down to 20°C.SELECTED DRAWING: None 【課題】ポリエステルフィルムの蒸着層上にバリアコート層を積層し、その際に乾燥（加熱）工程を経た後であっても、ガスバリア性（特に水蒸気バリア性）に優れるバリアフィルムを製造することができる延伸ポリエステルフィルムの提供。【解決手段】本発明による延伸ポリエステルフィルムは、ポリエステルフィルムに単位断面積当たり荷重２．９２×１０６Ｎ／ｍ２を負荷しながら、温度２０℃で５分間保持した後、昇温速度１０℃／分で１５０℃まで昇温し、温度１５０℃で１０分間保持した後、降温速度１０℃／分で２０℃まで降温させた後に測定したポリエステルフィルムのＭＤ方向の熱収縮率が、０％以上１．００％以下であることを特徴とする。【選択図】なし