In this study, we are coating PET with different types of carbohydrate-based biopolymers blended with binder adhesives to improve its barrier performance. Different variables, such as, coating type, coating thickness, solid concertation, adhesive types and concentrations are studied. A significant question is whether these biopolymer coatings are compatible with PET film, since mechanical and thermal changes can lead to defects and biopolymers tend to delaminate when coated on a PET substrate due to weak interfacial bonding. Herein, a robust coated layer has been developed on the PET surface to maintain coated surface adhesion to the substrate under mechanical and thermal stress. The coated PET film significantly reduces the oxygen transmission rate compared to the substrate making it a competitive alternate to the currently available packaging options. Additionally, the film is designed for recyclability, helping to reduce plastic waste pile up. The developed material system can be applied for different packaging applications to extend product shelf life while maintaining environmental sustainability.