This innovative plant oil-based bio-resin offers an eco-friendly and biodegradable alternative to non-biodegradable plastic liners in the packaging industry. It can be applied to various substrates including paper, biopolymer, and cellulosic materials, creating compostable barrier packaging products such as bags, pouch, plates, and takeaway containers. The resulting bio-coated products are environmentally friendly, non-toxic, and microwave-friendly. They provide significant advantages, including hydrophobicity, oleophobicity and icephobicity, along with an 80% reduction in water vapor transmission rate (WVTR) and improved shelf life. The moisture-resistant and oil-resistant properties of the bioresin make it suitable for packaging fatty foods and beverages at both hot and cold temperatures. It is repulpable whereby recycling of the substrate can be achieved, and is also compostable with nil release of toxic components into the soil, ensuring environmentally safe disposal.