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The development prospect of PET plastic bottle

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2022-04-28


In the detection standard of PET plastic bottle cap, there are clear requirements for the sealing performance of the bottle cap. According to the different uses of the bottle cap, there are different regulations on the measurement methods without gas cap and gas cap. Without air cap, the bottle cap shall be cut off from the anti-theft ring (strip) for sealing with a rated torque of not less than 1.2NM, tested with a seal tester, pressurized to 200kPa, kept under water for 1 minute, and observed whether there is air leakage or tripping; The gas cap is pressurized to 690kPa, kept under water for 1 minute, observed whether there is air leakage, then increased to 1207kPa, kept under pressure for 1 minute, and observed whether the cap is tripping. Since the raw materials for plastic packaging come from oil, in order to save resources, many developed countries have developed recycling technologies for plastic packaging.

The good barrier property of PET material makes it the main packaging material for various carbonated drinks, fruit juices, milk products, tea drinks, mineral water and other foods and beverages. In our country, at present, all PET plastic bottles are made of raw PET raw materials extracted from petroleum. The annual output of PET plastic bottles of up to 3 million tons consumes more than 18 million tons of petroleum, which also causes huge environmental pressure. The recycling of PET recycled plastic bottles is conducive to saving resources. The total amount of PET plastic bottles discarded each year is as high as 150000 tons, about 6 billion waste plastic bottles, causing great harm to the environment. PET recycled plastic bottles can achieve unlimited recycling. This is our country within reach of environmental technology.