The main objective of the proposed project is to develop new thermoplastic biopolymer (PBS/PBSA), phase exchange material (PCM) and meat sheep wool waste (SWW) composite materials for the production of sustainable multifunctional insulated packaging with improved insulation and comparable mechanical properties. up to or beyond the performance of conventional oil-based plastics and easy reprocessing in a molten state in order to achieve the United Nations (UN) sustainability goal of responsible consumption and production. The idea of the project is shown in the attached file IDEJA.The novelty of the project is justified by the fact that this will be the first attempt to produce a new composite material consisting of biopolymer, phase change material and meat sheep's wool fibres through the recycling of insulated packaging. In order to achieve this objective, the project will carry out industrial research and experimental development through multidisciplinary cooperation between Riga Technical University (RTU), the leading partner of this project with experience in thermoplastic biobased polymer composite materials and polymer processing research, the University of Latvia (UL), scientific cooperation partners with experience in characterization and modification of sheep wool fibres, and SIA APV Polimers, industrial cooperation partners with experience in manufacturing plastic boxes, pallets and containers based on primary and recycled thermoplastic materials based on forsilo raw materials. The main results of the project are expected to be: an easily dismantled and mechanically recyclable three-layer packaging prototype consisting of: (1) a new thermoplastic biopolymer composite with improved mechanical, barrier and insulating properties of the outer layer, (2) an innovative sheep wool waste (SWW) fiber composite with improved insulating properties for the middle layer, and (3) a food grade biopolymer composite for the inner layer. The composite material used in both the outer and inner layers will be obtained through thermoplastic recycling and can be used to make the inner and outer box of the packaging prototype. The SWW composite material will be manufactured by a suitable technological technique (e.g. felting) and will be used to produce the middle insulating layer of the prototype. This will allow the packaging prototype to be easily and quickly created and dismantled after use. At the same time, the developed packaging prototype will be fully recyclable without the need to dismantle it and will be suitable for the production of new molding-derived biopolymer-SWW composite materials. Both of these techniques will ensure that the materials used in the end-of-life prototype packaging will be reusable to produce new products, thus meeting the requirements of the circular economy. As part of the project, a patent application will be filed to protect the intellectual property rights of the developed biopolymer-SWW composite materials. The main scientific results of the project will be disseminated through Q1-Q2 level magazine publications and presentations at major international scientific conferences and innovation exhibitions. Scientific research and the profession of scientist will also be promoted to the general public through public events, media, exhibitions and other mass events in order to demonstrate the possibilities of commercialization of the developed products and the possibilities of acquiring new market opportunities. The project will contribute to the Smart Specialisation Strategy (RIS3) of the Republic of Latvia in the areas of ‘Smart materials, technologies and engineering systems’ and ‘Knowledge intensive bioeconomy’, as well as being in line with ‘Science, technology’. Guidelines for Development and Innovation 2021-2027’. Therefore, the project is directly related to the following priorities of the Latvian economy: 1) Priority 1 for a more efficient use of primary production for the development of new products with increased added value, as the disposal of meat sheep wool waste as a by-product of primary production (sheepmeat) is expected. In this way, non-textile meat sheep’s wool waste would be integrated into a new polymer composite material, which would allow the product spectrum of SIA APV Polimers to be diversified. At present, no company integrates these by-products into biopolymer-based composite materials. To date, biopolymers have only been used in small quantities in food packaging to comply with the Green Deal policy. In recent years, various fibres, husks and wood dust typical of Latvia have also been studied as additives to innovative products, but many of these materials lack sufficient mechanical and thermal insulation properties or have a high moisture absorption capacity. In addition, they are not suitable for use in multilayer or composite materials. This makes it possible to use wool waste from meat sheep breeds, turning it into functional components in composite mater