Recycling of PET plastics

The recycling of German waste PET bottles into "China sweaters" is also worth pondering. More than 8 million PET bottles flow into the German market every year. Garbage recycling companies collect these bottles, press them into balls or blocks, and then sell them to China at a relatively high price. According to relevant calculations, a bottle that can hold 16 liters of drinks can be made into a sweater. Before looking back at 1993, all the plastic bottles were put into the dustbin, and a few were recycled. Since the supermarket tried to recycle empty bottles four years ago, PET bottles have been on a trip to Wan Li: going to China, turning them into synthetic tweed sweaters, and then returning to Germany. China textile industry has a huge demand for plastics. Although businessmen will add another yard to the price of German recycling enterprises, it is cheaper to import this raw material than to produce it themselves. The freight from Hamburg to Hongkong is very low, because there are many empty seats on the freighter after it has loaded and unloaded textiles from China. The production cost in China is very low, because the labor force is low and the environmental and social standards are not perfect. In China factory, these PET raw materials are classified by color, cut into pieces and melted. After processing, PET bottles are returned to Germany in the form of textiles and sold in Germany. The value creation embodied here is enormous: the price of a synthetic tweed sweater ranges from 50 to 100 euro, while the materials used are only equivalent to 32 euro cents. The demand for old plastics in the Far East is endless. China has been unable to meet its own needs with first-hand raw materials. In this context, the value of second-hand raw materials like PET has doubled. Empty plastic bottles are shipped to China as raw materials, which shows that there is a world market for second-hand raw materials. 10 years ago, garbage was thrown into the garbage dump. "At that time, we were a society of consumption and discarding." The example of China's processing and resale in Germany illustrates this problem. "The development of this market shows all consumers that some garbage has indeed been recycled."

In addition, for example, in the past two years, Indian Intercontinental Recycling Company has produced qualified recycled PET. It is reported that the device of Intercontinental Recycling Company owned by Indians in Skelmersdale, northern England, started trial operation in June 2007. According to the plan, the device can recycle and transform 30,000 tons of waste plastic bottles every year. In addition, the equipment has some sorting, washing and drying equipment, and the products produced will be hot cans and bottles of non-edible products. Consumers can use this material to package inedible products, or as an intermediate to separate two edible substances. At present, the market price of recycled PET bottles from non-edible products in Britain is about 600 pounds/ton.

In addition, Japanese companies have successfully developed recycled PET modifiers. Looking back at the container recycling law implemented in Japan in April 2000, the number of PET bottles recovered in 2006 reached 390,000 tons, only 60% of the recovery rate. For the technical problems of pet recycling. Japan Noguchi Xihua Chemical Co., Ltd. successfully developed two brands of recycled PET modifiers "AR-P- 1000" and "AR-P-100" and put them on the market. The main characteristics of AR-P regeneration modifier are as follows: ① There is no need to dry when using. ② Very stable at room temperature. ③ Suitable for all plastic molding equipment. ④ You can color at will. (5) It can be directly mixed and added. ⑥ The impact strength of recycled PET molding materials is improved. Because AR-P is dispersed in the recycled PET molding material in a fine state, the interfacial tension is small under the action of molding shear force. The viscosity ratio of AR-P to recycled PET molding material is 1, which is well dispersed and improves the impact strength of recycled PET molding material. For example, when 5%AR-P "is added, the notched impact strength increases from 2KJ/mz to 5.5KJ/m2. At 10℃, the low-temperature impact strength is 1. BkJ/mz to SkJlm2o⑦ improve the viscosity of recycled PET molding materials and the fluidity of PET melt molding materials, and are suitable for extrusion molding products with complex shapes and special-shaped materials.