The origin of biodegradable plastic bags: 2020 is a difficult year for everyone. The epidemic at the beginning of the year has led to a decline in the consumption levels of various companies and individuals. It is undeniable that we, as a manufacturer of plastic bags, also have a deep understanding of the number of businesses on the market. Naturally, the use of plastic bags has also decreased. In the second half of the year, due to environmental protection issues, the plastic restriction order was upgraded to prohibit the sale of non-degradable plastic bags. What about the past and present of degradable plastic bags? Do you really understand biodegradable plastic bags? Let’s follow Anhui Wujiu Plastic Industry to learn about professional biodegradable plastic bags today!
With the arrival of the 2020 New Year’s Day, the state stipulates that businesses are not allowed to sell non-degradable plastic bags to individuals. So what kind of plastic bag is the latest degradable plastic bag, and what is a degradable plastic bag? Plastic degradation means that high molecular weight polymers have reached the end of their life cycle, and their molecular weights have decreased, which is manifested by plastic brittle, cracked, softened, hardened, and loss of mechanical strength. The degradation of ordinary plastic bags requires decades or even hundreds of years. Over time, landfill or incineration of non-degradable plastic bags will pollute the environment. In order to protect the environment, there is the invention of degradable plastic bags. Degradable plastic bags are those that add a certain amount of additives (such as starch, modified starch or other cellulose, photosensitizers, biodegradants, etc.) during the production process to reduce their stability and are easier to degrade in the natural environment. Plastic bags are called degradable plastic bags.
What kind of plastic bag is a degradable plastic bag? Hometown of Plastics in China
Generally speaking, environmentally friendly plastic bags are from the selection of raw materials to the manufacturing process of processing, which will not pollute the environment, and can be recycled again, and finally can be decomposed in the natural environment after being scrapped, and will not pollute the environment. .
At present, degradable plastic bags are divided into the following four categories: 1. Water-degradable plastic bags are added with water-absorbing substances in the plastic, which can be dissolved after being used up and discarded in water. They are mainly used for medical and sanitary appliances (such as medical gloves) , Easy to destroy and disinfect.
2. Light-degradable plastic bags Add photosensitizer to the plastic, which will gradually decompose the plastic under sunlight. It belongs to an earlier generation of degradable plastics. Its disadvantage is that the degradation time is difficult to predict due to sunlight and climate changes, so the degradation time cannot be controlled.
3. Microorganisms compose biodegradable plastic bags, including biopolyester, biocellulose, polysaccharides and polyamino acids. It is a type of biodegradable plastic bags that can be completely differentiated by microorganisms in nature.
4. Light/biodegradable plastic bag A type of plastic that combines light degradation and microbes. It has the characteristics of both light and microbe degradable plastics.
What kind of plastic bag is a degradable plastic bag? Hometown of Plastics in China
Understand the classification of biodegradable plastic bags and common sense issues, so how do we identify biodegradable plastic bags when purchasing plastic bags? 1. The mark of biodegradable garbage. The biodegradable plastic bags have a unified Chinese environmental label, which is Qingshan, Green The green mark composed of water, sun and ten rings, if it is a plastic bag for food, also needs to be printed with a food safety permit qs mark and marked “for food”. 2. Storage time The shelf life of the degradable plastic bag is only about three months. Even if it is not used, it will naturally degrade within five months. In the sixth month, the plastic bag will be covered with “snowflakes” and cannot be used. Under composting conditions, even the newly produced degradable plastic bags can be completely degraded in only three months.
What kind of plastic bag is a degradable plastic bag? Hometown of Plastics in China
At present, Tongcheng, the hometown of plastic bags, has transformed into fully biodegradable plastic bags, which is also known as corn starch plastic bags. So, what are the potential advantages of developing crop-degradable plastic bags with starch as the material?
Starch has complete biodegradability in various environments. After the starch molecules in the plastic bag are degraded or ashed, they form carbon dioxide gas, which is not harmful to the soil or air. Most of the starch plastic bags currently produced in China are filled starch plastics, that is, a certain share of starch is added to the non-biodegradable polymer materials. After the biodegradation of starch, the physical properties of the entire material are collapsed and many end groups are exposed. Resulting in oxidative degradation, but the remaining PE, PVC, etc. after this “collapse” cannot be degraded and always remain in the soil. Accumulation will certainly cause pollution, so foreign countries classify such products as screening type.
What kind of plastic bag is a degradable plastic bag? Hometown of Plastics in China
For the biodegradable plastic bags that have just been launched on the market: The manufacturer promises to have extremely strict product requirements and control. All custom-made wholesale plastic bags will undergo three quality inspections by procurement, QC, and warehouse management personnel before shipment. Ensure that the products shipped to you are qualified products. If we produce plastic bags, biodegradable convenient bags, biodegradable vest bags, environmentally friendly packaging bags, plastic square bottom bags, food packaging bags, etc., if various problems occur during use, we are responsible for patiently solving them. If there is a product that is unqualified, we can give the corresponding treatment again.
