This paper presents sustainable requirements and a value proposition associated with the composition of the package of milk UHT (Ultra-high temperature). The coextruded film used for UHT milk packaging is not easily recyclable and the final product of its separation or recycling attempt has no favourable characteristics for any other subsequent industrial process, which leads to discarding. In response to the sustainable requirements of disintegration, biodegradation and compostability, new materials are investigated searching for what they promise according to different environmental standards. Sustainable requirements and properties are still being researched with new materials. This research has contributed with the analyses of these requirements and offered three materials' compositions to the creation of new plastics with a biodegradable look: PVOH, PLA and Cellulose. Current environmental improvements are difficult to achieve and maintain if sustainable packages are not preferred by customers, so it is necessary to review the value propositions offered so far to ensure the continuity of the process.