Polyethylene terephthalate, mainly including polyethylene terephthalate (PET) and poly two terephthalates (PBT). Polyethylene terephthalate, also known as polyester resin, commonly known as polyester resin. PET is the development of the earliest, the largest production, the most widely used polyester products.
The mainstream products in the domestic PET bottles, initially only limited packaging containers used in drinks such as Coca Cola, mineral water, distilled water, applications to its excellent performance and reasonable price to obtain the user generally welcomed, on the basis of the beverage packaging successful application. In recent years, PET bottles have in the application of heat-resistant bottled drinks black tea, green tea, juice and edible oil, cosmetics, pharmaceuticals, pesticides, and other industries are extended. The production process of polyethylene terephthalate) (PET) bottle blow molding production according to the different type billet preforming can be divided for injection stretch blow molding (injection stretch blow) and extrusion stretch blow molding (hereinafter referred to as extrusion blow).
As the public’s focus on the plastic waste crisis narrows, the world is awash with solutions for bottles. In laboratories, new versions of bottles claiming to be biodegradable or compostable appear regularly, and plastic industry chemists are experimenting with “chemical recycling” that returns the polymers to their constituent monomers, enabling them to be remade multiple times into new plastic bottles. PET recycled plastics can be used in food packaging, so it can be used to achieve unlimited recycling. After the first use, PET and other types of plastic bottles are easily recycled into many types of secondary products, including carpet fibers, pillow stuffing, tote bags, and strapping materials. Some beverage bottles and nonfood containers also use recycled plastic.
This is the environmental protection technology in China reach. Because of the plastic packaging materials from the oil, in order to save resources, many developed countries have developed a plastic packaging recycling technology.