FLAT TYPE CAPACITOR-USE POLYPROPYLENE FILM AND FLAT TYPE CAPACITOR USING IT

摘要

A flat type capacitor-use polypropylene film having a DELTA d(thickness determined by micrometer method - thickness determined by weighing method) of 0.05-0.2 mu m and a lengthwise shrinkage dimensional change rate of 3% or less, or a flat type capacitor-use polypropylene film having a DELTA d of 0.1-0.3 mu m and a lengthwise F5 value of 50 MPa or more, and a flat type capacitor using it. A film excellent in handling ability in a capacitor element winding process is obtained, and a small, a large-capacity flat type capacitor excellent in withstand voltage characteristics such as self-recovering property, and used suitably under a high rated voltage, is obtained. <IMAGE>