With the continuous improvement of people's awareness of environmental protection, degradable macromolecule materials, such as green, environmental protection, recyclable, plastic and so on, are increasingly applied in modern society.
In recent years, polyester materials have always been a growing category in the plastic industry, and are widely used in various packaging materials, agricultural films, biomedical, information electronics and other fields. From 2014 to 2019, the annual growth rate of the world's major polyester market will reach 7.3%. It is estimated that the world's major polyester market will reach about 47.4 billion US dollars by 2019, with huge potential for development.
In 2008, the world's first food-grade polyester bottle manufacturer with recycled polyester as raw material was established in the United Kingdom, which can recycle 35,000 tons of polyester bottles annually. In 2013, the first domestic recycled food-grade PET project was established in Tianjin, with an annual recovery of 50,000 tons. In terms of bio-based polyester packaging, beverage giant Coca-Cola introduced a 30% bio-based PET bottle in 2009. By 2013, it had sold more than 18 billion bottles, while commercial 100% plant PET bottles are expected to be available in 2018. There are also a number of industry giants such as Lile, Pepsi, Henry, Danone, Nestle, etc. have also launched bio-based PET, biodegradable PEF packaging products or commercialization plans. In addition, more and more biodegradable polyesters such as PLA are appearing in product packaging: the PLA film of NatureWorks, the world's largest PLA manufacturer, has been used by many food companies for its high transparency, high water vapor permeability and good cohesiveness; Wal-Mart, the retail giant, will be used as early as 2005. The supermarket's PET packaging was replaced by PLA packaging, and the compostable and degradable PLA plastic shopping bags were promoted. Domestic rookie alliance, Jingdong and other large-scale e-commerce logistics platforms also launched express packaging materials based on PLA, PBAT and other degradable polyester materials in 2016, which promoted the development of green packaging.