What can make white plastic turn yellow instantly?

I was shocked to read this report: waste plastics became raw materials for production: a large number of finished products were sold to Xi 'an and surrounding areas. A worker is selecting waste plastic bottles to sell to a plastic processing factory. Core Tip In some places in Xi 'an, disposable infusion sets, plastic bottles and disposable plastic cups are recycled from various illegal channels, and after simple treatment, bags of plastic particles are produced. Most of these plastic particles are transported to various places, and some of them are mixed with polypropylene waste to become raw materials for producing disposable plastic cups. No one would have thought that disposable infusion sets, plastic bottles, disposable plastic cups and condoms recovered from various illegal channels could be simply crushed and stirred to produce bags of plastic particles. These plastic particles are transported to various places, most of which are used to produce disposable food bags, and some of them are mixed with polypropylene waste to become the "golden raw materials" for producing disposable plastic cups ... These "white pollution" not only endanger the urban environment, but also seriously threaten everyone's life and health. After nearly a month's investigation, a black chain of urban "white pollution" that turned "waste" into "treasure" was finally uncovered. The first section of the chain of a large number of disposable infusion tubes is the purchasing point of some individual waste items hiding in the "village in the city". In many "villages in the city" in Yanta District, weiyang district and Lianhu District of Xi City, there are many purchasing points for waste plastics. Some only recycle beverage bottles, while others collect all plastics. Some scavengers know that the state explicitly prohibits the private recycling of medical waste, but they still secretly sell it to the recycling point. In Beichitou Village, Yanta District, the reporter found that some bosses openly refused to accept these disposable infusion tubes and syringes with mucus and even blood, but secretly bought them in large quantities. "Do you want an infusion tube?" On the afternoon of March 24, the reporter came to a recycling point. A lady who was sorting out waste looked at the reporter and didn't answer. But just after the reporter went out, she caught up with her hind feet and asked, "Is it big?" Is it new? Knowing that she was only asking about the market, she quietly told reporters that if the quantity was large, she could talk about it, and the price would "not suffer". "During the unannounced visit, the reporter found that the medical waste sent to the acquisition point mainly came from some small hospitals and clinics. According to the quantity, the price generally ranges from 1.4 yuan to 1.6 yuan per kilogram. Among them, the cleaner and better quality products cost more. The owner of a recycling point revealed that the reason for collecting medical waste is mainly because of its large quantity, high purity and easy to sell. Often, some acquisition points with good business are getting bigger and bigger because of the stable "supply" of hospitals and clinics. " What do you care as long as you can make money? "-many recycling point bosses in unannounced visits have this mentality. It is this mentality that makes the medical waste that should be treated harmlessly gather from the fingertips of the garbage collector to the collection point, and then to the second section of the chain-a hidden plastic processing factory. In order to find these hidden processing plants, the reporter tried his best to "set" the address of the factory from the boss of the recycling point, but the result was disappointing. Helpless, the reporter had to squat to find traces of motor vehicle transportation garbage. After several days of squatting and tracking, on March 25, a motor vehicle still didn't get rid of us after driving to Xi 'an North Second Ring Road, and the tracking was successful. Soon, the reporter followed the footsteps to the junction of Xianyang City and Chang 'an District of Xi City. Here, there is a plastic waste treatment plant covering thousands of square meters. There are four or five plastic processing plants standing side by side in the factory area. Several factories are located in an open area facing south and north. The factory is surrounded by a large area of polluted farmland. The machine roars from morning till night, and the pungent smell can blow hundreds of meters away when there is wind. The criss-crossing ditches behind the factory are dedicated "sewage outlets". Thick pieces of foam sewage mixed with various waste residues flow out of the factory, and the stench is threatening. The factory gate is usually closed, and it will only open for a while when the finished product, plastic particles, is delivered. On the pretext of opening a similar plastic processing factory, the reporter entered the factory with the consent of the boss. In the factory, the reporter saw a lot of plastic garbage piled up like a mountain, and opposite the garbage mountain was a row of crushing pools. There are roller-like gears stirring and cutting in the pool water, and infusion sets (tubes), plastic films, condoms, disposable syringes and other things roll in the black pool water. Crushed plastic garbage turned into fragments the size of a fingernail, and was fished into the biggest stove once and for all by a teenager with a black face. He kept filling, and a machine was connected to the other end of the stove. A girl wiped her sweat and pulled out noodles-like plastic filaments from the machine regardless of the heat. These black plastic filaments were quickly cut into particles half a centimeter long, fell to the ground for a while, and were swept away by workers for a while, and put into the flour bag of XXX flour mill. When asked why they were put into flour bags, the workers were silent, while the boss squinted and smiled. Reporter: The pool water is very dirty. Can it still be used after production? Boss: It sells fast! Don't eat it in your mouth, it's okay! Reporter: What should I do if there is a virus in medical waste? Boss: as long as you make money, who cares ... the reporter is very interested in opening the factory and the factory owner appreciates it. He even said "break even", saying that each car can earn at least 3000 yuan. If the raw materials of polyethylene and polypropylene rise, the profit will be even greater. Several factories next to the factory also produce plastic particles in red, white and blue colors. "This thing can be directly made into a bag, which is relatively thin. It can also be mixed with polyethylene powder to make a better bag, or it can be mixed with disposable cups. " A worker revealed that it is more troublesome to make cups with additives and stabilizers. Damage "crashed" into legal stores and sold at low prices. One night in late March, the reporter "followed the trail" and traced it to a plastic bag production workshop near Dalu Village in the western suburbs of Xi. The workshop is hidden in the courtyard of a private house, in a room on the west side of the courtyard. Two or three workers are filling a huge film blower with blue plastic particles. As the machine rotates, a long plastic film is pressed out from the other end. Then instantly cut and shaped, and a smooth and soft food bag was "born" like this. During an unannounced visit to several black workshops, such as Sanqiao and Doumen, the reporter found that except for a few workshops that also clean up particles, most of them directly send plastic particles into the machine. There are no effective disinfection measures in the whole production process. It is this simple production that enables ordinary small factories to produce about 600 kilograms a day. The output of a slightly larger factory is even more amazing. According to reports, manufacturers who produce food bags with plastic particles can earn at least 800 yuan per ton. The reporter also learned in the investigation that because of the simple "process" of bag making, many factories that process plastic particles are purchasing machines to produce plastic bags. The plastic bags produced are very thin, with many impurities and peculiar smell. In addition, in order to pursue greater interests, some factories producing plastic particles simply sell some plastic particles at low prices through legal chemical shops in Sanmin Village and Daxing West Road in the western suburbs. The price of these plastic particles is more than 4000 yuan lower than that of ordinary polyethylene powder per ton. From the first section to the second section of the chain, all kinds of waste plastics mixed with medical waste are instantly "brand-new" and become chemical raw materials invisible to outsiders. As these particles are continuously transported to various places, illegal manufacturers have low-cost raw materials. While tracking food bags, the reporter also turned his attention to disposable plastic cups that many people regard as "sanitary". Why is this cup transparent and the bottom of the cup is turbid white? Why does pouring boiling water into a cup give off a choking smell? In order to find out the source of these plastic cups and disposable plastic bags in The Secret Behind, from the beginning of April, the reporter began to trace them from the wholesale market to the village in the city and from the recycling point to the chemical store. Because disposable non-degradable tableware has been stopped by the state, the activities of all manufacturers are extremely hidden. Don't say that it is difficult for ordinary consumers to find their traces, and it is difficult for law enforcement agencies to find them. After many days of tracking, the reporter locked his eyes on the "100%" disposable plastic cups that were sold in large quantities on the market. Because there is no address on the packaging box, the contact number left cannot be contacted, so the reporter had to inquire with the industrial and commercial department according to the manufacturer "Xi 'an Qicai Industry and Trade Co., Ltd." on the packaging box. After learning that the company was located in Anshangqin Road, Xi, the reporter immediately went there, but after going there, he found that it was just a web-weaving workshop and there was no trace of the company. As a result, the reporter returned to the wholesale market, and then "set" the venue from the wholesaler, but still found nothing. Helpless, the reporter had to make a down payment and asked to go to the manufacturer to pull the goods in person on the grounds that he needed a lot of goods and time was tight. The wholesaler hesitated again and again, and finally agreed, telling reporters that it can be found in the garage of Wenjing Road. I thought I could find the factory, but when I found the garage, I found that it was just a warehouse for stacking disposable plastic cups. A staff member of the warehouse refused to disclose the address. But everyone has to keep following. From tracking vehicles entering and leaving the wholesale market to tracking vehicles transported in warehouses, and from the northern suburbs to the western suburbs, the journey on the expressway almost exhausted the patience of journalists. After waiting and tracking in Wang Si, Sanqiao and Zaoyuan Road, on the morning of April 1 1, the van we followed unexpectedly arrived in front of Xi New Century Meidenggao Food Co., Ltd. (hereinafter referred to as Meidenggao Company) on Daxing West Road. On the grounds of looking for someone, the reporter tried to enter the company twice and was stopped by the guard. I walked around the company and found that except the gate, everyone had to bite the bullet and pretend to buy disposable cups, but they were all allowed. After entering the company, according to the instructions of the staff, the reporter walked all the way to the south end and found it was a narrow aisle. Two van-type "light trucks" stopped in a small yard, and there was a clicking machine sound in the yard. Several workers are loading goods into boxes on the ground, and the words "Xi 'an Qicai Industry and Trade Co., Ltd." are printed on the boxes. While the boss was away, the reporter quickly turned the "factory" around. The factory is small and the house is dark and old. The west side is the main workshop, and the east side is the film production with air compressor and pull-tab machine. There are two rooms in the north and south, one for the packing box and the other for the warehouse. In the laminating workshop, a worker is filling the blender. White powder is polypropylene powder, and gray powder with obvious impurities is old material (directly recycled plastic cup scraps and white plastic particles). Reporter: Where did all these old materials come from? Worker: I don't know. The boss asked me to mix. Reporter (picks up a yellow plastic particle from the blender): What is this? Can I use it as a disposable cups? Worker: The high temperature will melt in a moment, and it will be out of sight. Reporter: Why not use polypropylene powder completely? Worker: The boss thinks it's too expensive. Reporter: What is the ratio of new materials to waste materials (old materials)? Worker: One to three. Reporter: What is it? Worker: 30% old materials, 10% new materials. In the west workshop, plastic fragments and particles on the ground can be seen everywhere. Several female workers gathered around a molding machine and kept putting the extruded plastic cups on their thumbs and forefingers like hats. Even if the cup fell to the ground, it was put on and put in a plastic bag marked "Please feel free to use it after disinfection". In the back corner of this room, there are still many dyed disposable plastic cups. According to the workers, these cups can be directly mixed with polypropylene powder after being crushed by a crusher. In order to find out why the cup factory is here, the reporter asked the staff of Meideng Company yesterday. It is said that "Meidenggao has nothing to do with the plastic cup factory. Meidenggao Company occupied the factory land of a food factory, and the food factory rented the back to the mug factory. " It is reported that an electromagnetic factory also rented land in the back. All vehicles must enter and leave the Mayden company gate. What is puzzling, however, is that when we went out to the door of Maiden Company, a security guard suddenly stood next to the doorman who had just let the reporter in. The doorman was also surprised to ask our driver why he didn't buy a cup. The reporter had to say that the manufacturer asked him to buy it in the warehouse and finally got it out. It is understood that at present, a ton of polypropylene powder costs more than 1 1000 yuan, while the old materials mixed with white plastic particles (commonly known as white acrylic) and recycled plastic cups cost less than 5,000 yuan a ton. Due to the rising price of polypropylene powder, disposable plastic cups that were originally produced underground are now produced with old materials in a cost-saving way. During this period, the net profit of production was about 0/000 yuan per ton/kloc. It can be said that the plastic cup factory with pure polypropylene powder can hardly survive without old materials. From the whole chain, if there is no last link-smooth sales, a large number of disposable food bags and plastic cups can not be spread to Xi 'an and even the surrounding areas. It is by relying on the promotion of wholesale markets and small vendors that every participant in this chain can finally make a profit. In many wholesale markets in Xi 'an, such as Guo Heng Food Wholesale City, Kangfu Road Wholesale Market, Gong Jian Road Comprehensive Wholesale Market, auspicious village Wholesale Market and Zhuque Road Wholesale Market, stalls selling plastic bags and disposable plastic cups can be seen everywhere, while in the streets of Xi 'an, there are countless vendors pushing bicycles full of food bags. Through contact, the reporter found that the reason why sales choose wholesale markets and small vendors for promotion can legalize the problem products and sell them in large quantities, on the other hand, it can avoid investigation and "live safely". For the sake of "safety", every link of the whole chain is very hidden. If the stall in the wholesale market doesn't know where the manufacturer is, even if a guest needs a lot of goods, the stall can only contact the warehouse with goods by phone. Warehouses are usually hidden, but they don't know the address of the manufacturer when they are discovered. It is impossible to find the manufacturer except that the owner can be contacted by a phone call. In addition, the transport vehicles from the manufacturer to the warehouse are all "own people" found by the manufacturer. These "own people" not only keep their mouths shut, but also keep secrets for their bosses. Moreover, from the warehouse to the wholesale market, all the cars are arranged by the warehouse, and it is difficult for wholesalers to know the details. From all aspects, its confidentiality is very strong. As for vendors pushing bicycles, most of them are small workshops that illegally produce food plastic bags. They walk up and down the street and are rarely found and punished by law enforcement agencies.