Overview

Mylar® is an extraordinarily strong polyester film that grew out of the development of Dacron® in the early 1950s. During the 1960s cellophane gave way steadily to Mylar® with its superior strength, heat resistance, and excellent insulating properties. The unique qualities of Mylar® made new consumer markets in magnetic audio and video tape, capacitor dielectrics, packaging and batteries possible. By the 1970s, Mylar® had become DuPont’s best-selling film, despite mounting competition. Mylar® is now a product of a joint venture, DuPont Teijin Films.

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