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 audiotape and videotape, 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.
Trade show display of DuPont products used in space suit
Mylar® polyester film became the primary substrate for video and audio recording tape
By the 1960s Mylar and cellophane generated almost two-thirds of the sales of the Film Department and practically all of its earnings. Today, the versatility of Mylar continues to be one of its major strengths: perforated Mylar film is used as food wrap and instrument manufacturers produce high-quality drumheads from Mylar. The product’s balance of properties and wide range of capabilities make it ideal in a broad array of applications in the electrical, electronics, magnetic media, imaging and graphics, and packaging markets.