Abstract: The development status-quo of waste polypropylene recycling and separation technology, as well as the process of heat recovery and thermal decomposition from the burning of waste polypropylene were introduced in this article. Meanwhile, the authors summarized the direct and modified recycling technologies of waste polypropylene in recent years, and pointed out the development trend of waste polypropylene recycling in the future.

Key words: wasted polypropylene; regeneration; recycling; plastics; fiber