Polyethylene terephthalate

Polyethylene terephthalate (CAS 25038-59-9), commercially known as Terylene or by the trade name Rynite, is a thermoplastic polyester resin.

Where is Polyethylene terephthalate used?

• Packaging: dominant material for blow-molded beverage bottles, food trays, and flexible films requiring moisture and gas barrier properties
• Textile manufacturing: polyester fiber and filament yarn
• Base material for apparel, upholstery, and technical fabrics
• Printing and packaging converting: biaxially oriented film as substrate for lamination, metallization, and flexible printed electronics
• Engineering-grade compounds are injection-molded into precision components such as connectors, housings, and structural parts in automotive and electrical applications.

Good to know: Approved as E1512 for food-contact applications. Food-contact and beverage-grade material meets FDA and EU food safety regulations.

Commercial specifications

• Resin grades differentiated by intrinsic viscosity (IV) for bottle, fiber, film, or engineering applications