Why is recyclability the best way for plastics to understand the world?

- May 02, 2020-

Why is recyclability the best way for plastics to understand the world?

Plastic itself causes low pollution to the environment. It is people who pollute the environment. It is people's living habits that pollute the environment. It is people's irresponsibility that pollutes the environment. It is people's opportunism that pollutes the environment.

 

People are the main body, and plastic is just a back pan. In our life, we can't do without all kinds of plastic bottles. Many plastic bottles will be sent to the recycle bin after they stay in our hands for a short time. Do you know where the empty plastic bottles end up?

 

There is no era that values recyclability more than today

You may not know that whether the problem of plastic pollution can be solved effectively depends largely on whether the design of plastic products is easy to recycle and reprocess. Up to now, there is no recyclable design standard in the domestic plastic industry chain. The upstream of the industry chain is disordered and nonstandard, which leads to a lot of problems in the recycling industry.

In comparison with international standards, the American Plastics Recycling Association (APR) and the European plastics Recycling Association (pre) have developed plastic recycling design guidelines suitable for their own recycling systems in 2009 and 2017 respectively, while China is still in the blank.

 

We hope that the brands, manufacturers and packaging enterprises in the upstream of the plastic industry chain can participate in the project of plastic recyclable design, jointly promote the introduction of the standard of "global specification for plastic recyclable design" in China, so that our entire plastic industry chain will gradually become one, which is more conducive to the healthy development of domestic enterprises.

 

The truth of plastic recycling

What plastic can be recycled, how many times it can be recycled, how many times it can be recycled, and what is really recycled, all the truth about plastic recycling starts from those globally consistent plastic recycling logos.

 

Signs such as the swivel arrows at the bottom of a mineral water bottle and the numbers inside are often misunderstood as recyclability, but this is not the case. These numbers indicate the type of resin, not the degree of recovery.

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Plastic recyclable logo

A lot of plastic packaging is a mixture of several kinds of plastics, making it more difficult. For example, the viscosity range of PET bottle trademark paper, bottle cap and bottle body is not uniform and not standardized. Most beverage bottle trademarks are made of PVC. In the sorting process, the density of PVC and pet is the same, which greatly increases the difficulty of sorting and processing.

The sorting system of plastics is very complex, most of them are incinerated or buried in the ground. Because the density of different kinds of plastics is very small, there are many kinds of plastics with the same density, and there are more than 50 kinds of plastics in total, which makes sorting and reprocessing plastics the most difficult thing of  all materials.

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Plastic sorter

 

From the original environmental point of view, all materials are worth recycling, but considering the economic factors, the situation becomes complicated. The change of plastic price and oil price is synchronous. When the market is depressed, plastic raw materials become very low, and recycled plastics become uneconomical.

 

In addition, many plastic products degrade every time they are reprocessed, which leads to the lower value of recycled plastic.

 

Plastic bags, foam plastic packaging and coffee cups can be recycled theoretically, and the sorting of manpower and resources is not directly proportional to recycling.

 

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Packed plastic bottle waste

 

The problem of plastics has gradually become a global phenomenon, and Frans Timmermans of the European Commission recently declared a war on disposable plastics. "It only takes five seconds to produce and five minutes to use a disposable plastic product, but it takes 500 years to degrade," he said It's frustrating to think that the archaeological remains of our time are plastic bags, yogurt bottles and disposable cups. How to deal with so many plastic bottles recycled every year in China?

 

Environmental problems are not only a difficult problem for China, but also a common problem for the whole world. Therefore, in recent years, all parts of the country have been continuously introducing relevant governance measures for environmental problems.

We can often see that some scavengers will search for plastic bottles near the garbage cans, and then sell them to the dealers after collecting a certain amount of plastic bottles, and the recycled dealers will pull these plastic bottles to the recycling plant. According to statistics, in China, 3.6 million plastic bottles are produced every year.

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Some people may think that these recycled plastics are directly disposed of like other wastes, such as buried in the ground or burned. However, the environmental damage caused by these two treatment methods is very large. Plastic bottles are non degradable materials. Burying under the ground will destroy the structure of the land and cause water pollution. The water quality is closely related to each of us. Naturally, burying will not be adopted, and burning is even more impossible. The burning of plastic will produce a lot of toxic chemicals and seriously pollute the air.

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Landfill 

In fact, for these plastic bottles, the country has a more intelligent way of processing, which is to reuse these discarded plastic bottles.


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There are many uses for making plastic bottles for human beings. For example, they can be used as materials for making clothes. Simply put, the discarded plastic bottles can be processed to make clothes that fit us.

 

Polyester used in plastic bottle is the same material as polyester fabric and polyester fabric in textile industry. After recycling, about 80% of plastic bottles will be used in textile industry, which is called recycled fiber.

 

Turning plastic bottles into recycled fibers is not a simple process. At present, there are two main processing methods of the green fiber. One is to prepare recycled polyester by crystallizing and drying recycled bottle slice and other recycled materials through screw melt extrusion and two-stage high-precision filtration technology.


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The other is to reduce the recycled waste clothes to monomer molecular level through chemical alcoholysis, filter and remove impurities, then polymerize them into PET chips, and finally spin them into fibers. As the largest producer of chemical fiber in the world, China has already mastered the key technologies and made continuous technological innovation.