BIAXIALLY STRETCHED POLYPROPYLENE FILM, METALLIZED FILM, AND CAPACITOR

To provide: a biaxially stretched polypropylene film that exhibits high insulation breakdown strength even at high temperatures; and a metallized film using the biaxially stretched polypropylene film.SOLUTION: The present invention provides a biaxially stretched polypropylene film characterized in t...

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Bibliographische Detailangaben
Hauptverfasser:	ISHIDA TATSUJI, YONEDA YOSHIHIKO, ISHIWATARI TADAKAZU
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BASIC ELECTRIC ELEMENTS CAPACITORS CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE CHEMISTRY COMPOSITIONS BASED THEREON ELECTRICITY GENERAL PROCESSES OF COMPOUNDING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	To provide: a biaxially stretched polypropylene film that exhibits high insulation breakdown strength even at high temperatures; and a metallized film using the biaxially stretched polypropylene film.SOLUTION: The present invention provides a biaxially stretched polypropylene film characterized in that the average value of ultrasonic wave propagation velocities in all directions at room temperature is at least 1.60 Km/sec as measured using an ultrasonic orientation testing instrument.SELECTED DRAWING: None 【課題】高温下でも高い絶縁破壊強度を示す二軸延伸ポリプロピレンフィルム及び当該二軸延伸ポリプロピレンフィルムを用いた金属化フィルムを提供する。【解決手段】超音波配向性試験機を用いて測定した室温における全方向の超音波伝搬速度の平均値が１．６０Ｋｍ／ｓｅｃ以上である、ことを特徴とする二軸延伸ポリプロピレンフィルム。【選択図】なし