Patent ID: 10718046

Abstract:
This disclosure provides compositions and methods for a film, which may include a base film and a coating layer on the base film, wherein the coating layer has a surface energy of at least 30 dynes/cm and consists essentially of nylon, polyester, ethylene vinyl alcohol-based copolymer, polyvinyl alcohol-based polyethylene terephthalate, polyvinylchloride, acrylate-based polymers, methacrylate-based polymers, polyurethane, polyalkylimine, acid-modified polyolefins, polyetherester-amide block copolymer, and combinations thereof. Further, the film may include a metal oxide layer on the coating layer, wherein the metal oxide layer has an optical density of equal to or less than 0.5 and a thickness from 0.1 nm through 100 nm. Further still, the film has an oxygen transmission rate of less than 4 cm3/m2/day at 23° C. and 0% relative humidity, a water vapor transmission rate of less than 4 g/m2/day at 38° C. and 90% relative humidity, and a thickness of 5 μm through 50 μm.