17 Biodegradable insulating materials including biopolymers; Biodegradable non-paper packaging and shipping buffers including biopolymers for physical and thermal protection of items during shipping and storage; Chitosan biomaterial being a plastic foam substitute in the form of blocks, pellets, rods, and sheets for use in manufacturing; Biodegradable packing and padding materials comprised of chitosan biomaterial being a plastic foam substitute; Biodegradable composite materials with biopolymers for use as plastic substitute, in the form of blocks, pellets, rods, and sheets for use in manufacturing