Renewable energy refers to the resources that can be continuously bred, grown, regenerated to keep up with the consumption rate, maintain or expand its reserves, and can be repeatedly used by people under the special time standard of nature. Mountain forests, soil layers, grasslands, wetland parks, solar energy, wind power, water, small animals, green plants, microorganisms and various biological communities are all renewable energy.
Degradable plastic bag is a kind of plastic bag made of this kind of renewable energy production materials. Generally, this kind of degradable plastic bag material can be rapidly manufactured or manufactured, or replaced or filled according to the biological and other processes to keep up with its application rate. Wood, cardboard, printing paper and paper paddles are widely used renewable materials. As long as the corresponding sustainable forest and fruit industry management methods are adopted, the required continuous supply can be completed, which is applicable to the normal operation of human society. Plastic bags made of fossil based materials refer to plastic bags made of materials with insufficient fossil resources on the earth. The mineralization of crude oil, natural gas, coal, minerals or organic chemical fossils are all fossil resources, which cannot be rebuilt in a short time; Manufacturing materials, such as laminated glass, plastic, metal materials, etc., are produced and processed from such resources as fossil based materials.
Degradable plastic bags, in other words, refer to plastic bags made of recyclable materials, which can be reused after recycling. Commonly used recyclable materials in life include printing paper, cardboard, laminated glass, plastic, metal materials, etc. Among them, paper and cardboard have the multiple characteristics of renewable materials and recyclable materials. Recyclable materials play a key role in energy conservation, environmental protection and environmental protection. Data show that one ton of waste paper can produce 850kg recycled paper, saving 3 cubic meters of wood; Waste PET plastic bottles can also be recycled, produced and processed into cotton yarn, which can be used as fabric materials in furniture, vehicles and other fields.
Biodegradable plastic bags means that chemical substances can be dissolved into natural ingredients in a biological way. The definition of biodegradable plastic bags in the EU Code is that 90% of biodegradable plastic bags can be converted into carbon dioxide, water and minerals within 6 months with the help of bacteria, bacteria or other simple organisms. Compared with biological solubility, compostable fertilizer is a better specification: according to the manipulation of environmental humidity, temperature and air oxidation process to improve the efficiency of biological dissolution, it is required that the materials be transformed into non-toxic components, and the whole process is not harmful to the natural environment.
Therefore, biodegradable plastic bags are biodegradable, but biodegradable plastic bags are not necessarily compostable. The vast majority of industrial production wastes including traditional plastic bags can only be dissolved for a long time under natural conditions, some of which must last hundreds or even thousands of years, causing great damage to the natural environment. Woody rock is a typical biodegradable plastic bag material. Compared with traditional plastic bags, they are obviously more friendly to the natural environment.
According to statistics and analysis, more than 10million takeout meals are sent out every day in China, many of which are made of plastic packaging products. It will take 400 years to fully consider the dissolution of traditional plastic bags. More and more customers call for renewable and biodegradable plastic bags to replace traditional plastic bags.