COATED POLYMERIC FILM WITH OXYGEN BARRIER PROPERTIES

摘要

A coating composition for providing substrates with oxygen barrier properties is disclosed. The substrate may be, for instance, a film, such as a polyester film. The coating composition includes a copolymer of maleic acid and acrylic acid and a copolymer of vinyl alcohol and a vinylamine. The barrier coating formed from the coating composition is typically less than about (1) micron in thickness and provides reduced oxygen transmission even at relatively high relative humidities.