The paper examines the main advantages and disadvantages of modern methods for recycling of polymers and polymer composites based on them, which to a certain extent allow preventing environmental pollution by products made of them at the end of their life cycle and after failure. The most progressive and efficient method of polymer waste recycling has been determined, that consists in using biodegradable materials as a polymer base, the products made of them being decomposed into environmentally safe compounds. Polylactide as one of the most widespread biodegradable polymers was considered as a very promising material. It was processed into a product by using 3D printing. The optimal processing temperature (2100C) was determined, at which the maximum level of physical-mechanical properties of polylactide products is observed. We studied the effect of the degree of products infilling, which were obtained on a 3D printer, on their main strength characteristics. The mathematical dependences describing this effect were derived.