According to statistics, the annual consumption of plastic by the global population (about 7.6 billion) is 245 million tons. Only 14% of plastic packages are recycled, while 1/3 of packages are not collected at all. About 80% of ocean pollution is caused by plastic waste, a land-based pollution source. It takes 450 years to convert plastic waste into particles.
Plastic beverage bottles have become one of major sources of marine plastic pollution. In China, the discarded plastic beverage bottles account for 40% to 50% of total package waste. On the one hand, garbage siege is exacerbated; on the other hand, there are still small-sized workshops engaged in illegal plastic recycling, bringing about a series of problems of resource waste and environmental pollution. The deposit system is a low-cost economic system, which has been proved by theory and practice to be effective in disposable package recycling, and can be applied in the field of beverage packaging to recycle beverage packages in a low-cost, efficient, and safe manner.