One of the most common materials that have affected all areas of human life is plastic. Various polymers nowadays have become indispensable due to their relatively low cost and the large number of products that are made from them. They are relentlessly pushing aside glass, metal, and paper. At the same time, from all waste, plastic is the most convenient and easy to recycle. For example, plastic bottles and bags can be recycled completely. Also, the ability to endlessly send plastic for recycling saves the consumption of oil from which it is originally produced.
Currently, the problem of recycling polymer waste materials is becoming relevant not only due to environmental protection but also due to the shortage of polymer raw materials. From 1 kg of waste (polyethylene terephthalate, polypropylene, low-density polyethylene, high-density polyethylene), 0.8 kg of secondary raw materials are obtained. The popularity of plastic is explained by its lightness, economy, ease of use. Also, the production of plastic requires 21% less energy than the production of glass.