Many people use plastic bags when they go shopping in the supermarket and buy food in the grocery market. However, ordinary plastic bags are extremely difficult to degrade, and the resulting "white pollution" has become a global environmental protection problem. In recent years, many countries have implemented “plastic restrictions†and “plastic restrictionsâ€. What alternative plastic bag can I use? Recently, a company in Chile has given a solution.
The new type of plastic bag can be dissolved in water and can be consumed for 5 minutes to complete degradation
From the appearance, this new plastic bag is no different from ordinary plastic bags. However, put the new plastic bag into a pot of room temperature water and stir, you will find that it is different. The plastic bag melts into water and turns into a milky white liquid. Not only that, the melted water is still drinkable.
The new plastic bags are actually developed by a Chinese company. The company cooperates with a company in Chile and plans to put into mass production in Chile.
The researchers said that this plastic bag is harmless to the human body. The main raw material, polyvinyl alcohol, is a water-soluble biodegradable material derived from calcium carbonate or natural gas. Other auxiliary raw materials are also food-grade materials. The raw material of general plastic bags is polyethylene, derived from petroleum, which is extremely difficult to degrade in the environment, and it is difficult to recycle. An ordinary plastic bag takes hundreds of years to degrade, while a polyvinyl alcohol water-soluble bag only takes 5 minutes.
If the polyvinyl alcohol water-soluble bag is thrown into the sea, it will quickly dissolve and disappear in the seawater, and eventually be completely degraded into water and carbon dioxide by microorganisms, and will not form "white pollution" like ordinary plastic bags.
Will it be possible to carry this water-soluble plastic bag on a rainy day?
The researchers said that they will design products with different water-soluble temperatures, from room temperature 25 ℃ to 75 ℃, and then to 90 ℃. In countries where it rains frequently, plastic bags that dissolve at high temperatures can be used.
Researchers said that the cost of water-soluble bags is now three or four times that of ordinary plastic bags. The company plans to start mass production by the end of this year. At that time, they expect that the price of water-soluble plastic bags can be similar to ordinary plastic bags, and truly enter people's lives.
Multi-country management of plastic waste launches edible alternatives
As of July 2017, the cumulative global production of plastics exceeded 9.1 billion tons. The UN says that if people do not change their consumption patterns and waste management, by 2050, landfills and the environment will be flooded with about 12 million tons of plastic waste.
The pollution of plastic waste has caused headaches for countries all over the world. In addition to the soluble plastic bags introduced in Chile, other countries have also introduced some edible plastic substitutes.
Edible water polo is environmentally friendly and degradable
A British company has developed an edible water polo that is an alternative to plastic bottles. The water polo has a double-layer membrane. The main composition of the membrane is a natural seaweed extract, which is harmless to the human body.
When drinking, you only need to tear the first film of the water polo, and the water, beverage or wine in the second film can be directly put into the mouth to drink. The first film is also edible, even if it is unwilling to eat it, it can naturally decompose within 4 to 6 weeks without polluting the environment.
Cereals made from spoons are safe, non-toxic and edible
In addition to plastic bottles, plastic spoons also have edible alternatives. An Indian company has launched a completely non-toxic edible spoon. The spoon is made of sorghum flour, rice noodles and wheat flour without preservatives. The company's founder Pisapati said that the spoon is not only uncoated, but also edible, tasty and nutritious.
"Seaweed Cup" can be eaten and is environmentally friendly
The edible substitute for plastic cups is a "seaweed cup" made in Indonesia. The "seaweed cup" is made of natural materials, does not contain preservatives and gelatin, and is very healthy to eat. Many people may worry about the taste of the "seaweed cup", but many people have said that it tastes good, and there are three flavors to choose from. In addition to replacing plastic cups, "seaweed cups" can also replace ice cream cones. A local ice cream shop has already started to use this "seaweed cup" to serve ice cream.
Edible environmental protection plastic bags
Ashworth Hedge, the founder of an Indian environmental company, developed an edible plastic bag. Edible plastic bags are made of 12 kinds of raw materials such as potato powder, sweet potato powder and vegetable oil. This product has been used in many chain stores in India, Qatar and UAE.
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