Polyester film
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Description
An extruded sheet of Polyester resin. Polyester (polyethylene terephthalate) films are typically stiff but flexible and highly transparent. First introduced in the early 1950s, they are chemically inert and dimensionally stable and provide an effective barrier to moisture, oil and grease. Polyester films, such as Mylar®, are used for photographic film, storage sleeves, drafting and linings.
Synonyms and Related Terms
PET film; película de poliéster (Esp.); film polyester (Fr.); feuille polyester (Fr.); pellicule polyester (Fr.); film di poliestere (It.); película de poliéster (Port.); drafting film
Examples: Geofilm [Hughes-Owens]; Transpagra; Mylar® [DuPont Teijin]; Melinex® [DuPont Teijin]; Cronar® [DuPont Teijin]; Hostaphan 43SM [Mitsubishi];
Applications
- Barrier films
- Interleaving and encapsulation
- Transparent windows in storage boxes
- Heat-sealed packaging
- Lamination
- Printing
Risks
- Difficult to ignite.
- Burns with a shiny, yellow-orange, sooty flame. Self-extinguishing.
Physical and Chemical Properties
- Resistant to weak acids, weak alkalis, bleach and most organic solvents.
- Degrades in strong alkalis, strong acids, cresol.
Resources and Citations
- Jean Tetreault Products Used in Preventive Conservation CCI, December 2017. Link
- DuPont Teijin: [Films Database]
- Rachael Perkins Arenstein, Lisa Goldberg, and Eugenie Milroy, ‘Support and Rehousing for Collection Storage’ In ‘Preventive Conservation: Collection Storage’ Lisa Elkin and Christopher A. Norris (eds.), Society for the Preservation of Natural History Collections, New York. 2019.
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989