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Development status of PET at home and abroad

发布时间::2018/06/22 点击量:
      PET (polyethylene terephthalate ester two) since 1953 by the DuPont Co to achieve industrialization, because of its good physical properties and processing of large industrial production, reduced costs reflected in the price advantage, quickly replaced the many other varieties of chemical fiber, and currently has become the largest family of synthetic fiber.
      1, the development of global PET
      Since 2003, the global PET capacity at an average annual rate of about 9% expansion, 2005 production capacity has reached about 54 million 700 thousand tons, annual output of 41 million tons in 2005, according to PCi forecasts, by 2008, the global PET production capacity will reach 67 million tons, output of 50 million tons.
      At present PET products from polyester staple fiber initially extended to polyester staple fiber, the polyester filament, polyester bottle, polyester film, non-woven fabrics, engineering plastics and composite multifunctional products such as a series of hundreds of thousands of product specifications, the products formed from the initial 100% short fiber the development of multi varieties of balanced development.
      PET in the China large-scale industrialization started in the last century at the beginning of 80s, developed in the middle of 90s, the current production capacity has more than 20 million tons, becoming the world's largest consumer, the production of PET, PET in the proportion of China status and forecast global PET as follows:
      2, the development status and trends of global non fiber use PET
      The use of non fiber PET first introduced by Kodak company is used as a substrate of photographic film, from the middle of 80s, the Coca Cola Co will be the introduction of varieties of beverage packaging, thereafter, non fiber use PET rapid development, has developed into the bottle, film, sheet, plastic, packing belt (strap). A field, only to food grade bottle with PET slice is mineral water, carbonated drinks, canned hot drinks, white wine bottles and beer bottle and other classification. Global PET packaging capacity of 14 million 500 thousand tons in 2005, the distribution is as follows:
      China packaging and non fiber use PET started late, but rapid development. In 2005, China's PET bottle production capacity of 3 million 100 thousand tons, production of up to 1 million 700 thousand tons, of which domestic sales of 1 million 200 thousand tons, exports of 500 thousand tons. According to the current on Europe and the United States PET consumption (American 17KG/, European 20KG/ and PET) in the total capacity in the proportion of Chinese packaging applications PET production is still a large space for development (currently 1.3KG/), expects its growth rate should be in the 15%/ level, that is to say "" at the end of 11th Five-Year will be approximately 650-700 million tons / year production capacity.
      Conclusion: due to the rapid increase in the use of disposable PET packaging, environmental protection in China and the world to bring new pressure. We will often say, "waste is garbage, waste separation is the resource". If we can do a good job recycling and utilization of waste PET, not only can reduce environmental pollution, but also provides a new way for human resources.
      Current situation and development trend of PET recycling technology for packaging applications
      1, packaging PET recycling and reprocessing industry development history
      At the end of 60s to early 70s, with the popularity of non fiber use PET and other packaging products in developed countries, the PET recycling and reprocessing technology have emerged, the earliest the regeneration PET fiber industrialization enterprise is an American WELLMAN company, currently recovering PET fiber of the company's production capacity is 50 thousand tons / year. Waste PET processing capacity of more than 100 thousand tons / year, the recycling of PET fiber products market covers non-woven fabrics, carpets, home textiles, automotive and other fields, the production of up to more than and 80 species of. Due to labor costs and other factors, at present, the developed countries in the field of renewable PET reprocessing pay more attention to the development of new technology, product market, the development of high value-added products.
      2, the current status of PET recycling technology
      At present, the international PET recycling can be divided into two technical routes.
      The first is the mechanical (or physical) recycling process.