2축 배향 폴리프로필렌 필름, 금속막 적층 필름 및 필름 콘덴서

• Main Authors: FUJIMOTO SOICHI, ASANO TETSUYA
• Format: Patent
• Language: Korean
• Published: 11.07.2018
• 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; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; 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

본 발명은, 소자 가공성, 고온 내전압 특성이 우수한 2축 배향 폴리프로필렌 필름, 금속막 적층 필름 및 필름 콘덴서를 제공하는 것이다. 본 발명은, 폴리프로필렌 수지를 주성분으로 하는 2축 배향 폴리프로필렌 필름이며, 적어도 편면의 산술 평균 조도 SRa가 0.03 내지 0.10㎛이고, 적어도 편면의 최대 밸리 깊이 SRv가 0.10 내지 0.50㎛이며, 또한 적어도 편면에서, 비접촉 표면 형상 측정에 의한 1,252×939㎛ 범위의 시야 면적 중에 존재하는, 깊이 0.05㎛ 이상의 밸리측 공극 체적이 100 내지 10,000㎛인 2축 배향 폴리프로필렌 필름으로 한다. Provided are a biaxially oriented polypropylene film having excellent element processability and withstand voltage characteristics at high temperature, a metal film-laminated film, and a film capacitor. The present invention includes a biaxially oriented polypropylene film including a polypropylene resin as a main component, in which an arithmetic average roughness SRa on at least one surface is 0.03 µm to 0.10 µm, a maximum profile valley depth SRv on at least one surface is 0.10 µm to 0.50 µm, and a profile valley side void volume having a depth of 0.05 µm or more existing in a visual field area in a range of 1,252 µm × 939 µm on at least one surface measured by non-contact surface shape measurement is 100 µm 3 to 10,000 µm 3 .