聚酯薄膜已成为当今大多数密封电机中公认的接地和线圈对线圈绝缘t材料。本文论述了为什么聚酯薄膜的性能使这一发展成为可能，以及如何识别和控制关键性能以确保产品功能一致。简要介绍了取向聚酯薄膜的发现和发展，并对其性能进行了概述。薄膜的制造过程特别强调了对电机应用中的重要性能有影响的步骤。本文展示和解释了聚酯薄膜在密封电机中的具体应用，并详细列举和讨论了该用途的薄膜特性。 介绍了控制这些特性的典型方法。讨论了未来可能的产品开发。引文:密歇根州底特律ASHRAE学报第85卷第2部分研讨会

Polyester film has become the accepted ground and coil to coil insulation t material in most hermetic motors today. This paper deals with why the, properties of polyester film have made this development possible and how the recognition and control of key properties assure a consistently functional product.The discovery and development of oriented polyester film is briefly presented along with a general description of its properties. The manufacture of the film is described with particular emphasis on those steps which have influence on properties important in motor applications. Specific applications of polyester film in hermetic motors are shown and explained and film properties for this end use are enumerated and discussed in detail. Typical methods for controlling these properties are presented. Potential future product development is discussed.