As a new type of sheet material integrating structural functionality, environmental-friendliness and cost-effectiveness, the thermoplastic insulation composite board adopts a unique sandwich structure of thermoplastic panel + insulation core layer, providing groundbreaking solutions for multiple fields such as building insulation, cold chain logistics and green packaging. This functional material, manufactured via adhesive-free lamination or hot-melt welding technology, not only resolves the long-standing trade-off dilemma of traditional insulation boards among strength, weather resistance and environmental performance, but also achieves precise adaptation to diverse scenarios ranging from general construction to high-end cold chain through its customizable material system.