It dissolves in water, what about a plastic bag that can be drunk?
Many people use plastic bags when they go shopping in supermarkets and grocery markets. However, ordinary plastic bags are extremely difficult to degrade, and the "white pollution" caused by them has become a global environmental protection problem. In recent years, many countries have begun to implement "plastic restriction orders" and "plastic ban orders." What can be used instead of plastic bags? Recently, a Chilean company offered a solution.
The new plastic bag can be dissolved in water and can be drunk in 5 minutes to complete degradation
From the appearance point of view, this new type of plastic bag is no different from ordinary plastic bags. However, put the new plastic bag in a pot of room temperature water and stir, you will find a difference. The plastic bag melts in water and turns into a milky white liquid. Not only that, the melted water can still be consumed.
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, which is derived from calcium carbonate or natural gas, and other auxiliary materials are also food-grade materials. The raw material of general plastic bags is polyethylene, which is derived from petroleum, which is extremely difficult to degrade in the environment and 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 will eventually be completely degraded into water and carbon dioxide by microorganisms, and will not form "white pollution" like ordinary plastic bags.
Will this kind of water-soluble plastic bag melt when it rains?
The researchers said that they will design products with different water-soluble temperatures, from room temperature 25°C to 75°C, and then to 90°C. In countries where it often rains, 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, and the company plans to start mass production at 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 it will truly enter people's lives.
Treating plastic waste, many countries launch edible alternatives
As of July 2017, the cumulative global production of plastics exceeded 9.1 billion tons. The United Nations stated that if people do not change consumption patterns and waste management, landfills and the environment will be filled with approximately 12 million tons of plastic waste by 2050.
Plastic waste pollution has caused headaches for countries all over the world. In addition to the water-soluble plastic bags introduced by Chile, other countries have also introduced some edible plastic alternatives.
Edible water polo, environmentally friendly and biodegradable
A Chinese 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 off the first film of the water polo, and the water, beverage or wine in the second film can be directly put in the mouth for drinking. The first film is also edible. Even if you don't want to eat it, it can decompose naturally within 4 to 6 weeks without polluting the environment.
Grain made into spoon, safe, non-toxic and edible
In addition to plastic bottles, plastic spoons also have edible alternatives. An Indian company introduced a completely non-toxic edible spoon. The spoon is a mixture of sorghum flour, rice flour and wheat flour without preservatives. Company founder Pisapati said that this spoon is not only uncoated, but also edible, delicious and nutritious.
"Seaweed Cup" is edible and environmentally friendly. Three flavors are available
An edible alternative to 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 be worried about the taste of the "seaweed cup", but many people who have eaten it say 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 using this "seaweed cup" to serve ice cream.
Edible environmentally friendly plastic bags
Ashworth Hutch, the founder of an environmental company in India, has developed an edible plastic bag. Edible plastic bags are made of 12 kinds of raw materials including potato flour, sweet potato flour, and vegetable oil. At present, this product has been used in many chain stores in India, Qatar, and UAE.
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