POLYOLEFIN-BASED FILM, METALLIZED FILM INCLUDING SAME, FILM CAPACITOR, POWER CONTROL UNIT, ELECTRIC VEHICLE, AND ELECTRIC AIRCRAFT

• Main Authors: OHKURA, Masatoshi, IMANISHI, Yasuyuki, TATSUKI, Toshiumi
• Format: Patent
• Language: English; French; Japanese
• Published: 29.12.2022
• Subjects: 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

The present invention addresses the problem of providing a polyolefin-based film which is excellent in terms of withstand voltage characteristics and reliability in high-temperature environments and is suitable for use in, for example, capacitors to be used at high temperatures and high voltages. The present invention provides a polyolefin-based film that includes A layer, which includes a cycloolefin-based resin and a polypropylene-based resin, and that has a total light transmittance of 85% or higher and an internal haze of 4.0% or less. La présente invention aborde le problème consistant à fournir un film à base de polyoléfine qui est excellent en termes de caractéristiques de tension de maintien et de fiabilité dans des environnements de température élevée et qui convient pour l'utilisation dans, par exemple, des condensateurs à utiliser à des températures élevées et des tensions élevées. La présente invention fournit un film à base de polyoléfine qui comprend une couche A, qui comprend une résine à base de cyclooléfine et une résine à base de polypropylène, et qui présente une transmittance totale de la lumière de 85 % ou plus et un trouble interne de 4,0 % ou moins. 本発明は、高温環境での耐電圧特性や信頼性に優れ、高温度・高電圧下で用いられるコンデンサ用途等に好適なポリオレフィン系フィルムを提供することを課題とし、環状オレフィン系樹脂とポリプロピレン系樹脂とを含む層をＡ層としたときに、前記Ａ層を有し、全光線透過率が８５％以上であり、かつ内部ヘイズが４．０％以下であるポリオレフィン系フィルムの提供を本旨とする。