A plastic bag made of degradable plastic that can be naturally decomposed in the natural environment is a degradable plastic bag. Adding a certain amount of additives to the degradable plastic in the production process reduces its stability and allows it to decompose itself in the natural environment. It is an environmentally friendly plastic bag. There are four types of degradable plastic bags: photodegradation, life explanation, water degradation and photo / biodegradation. Degradable plastic bags generally have the sign of degradable garbage, and have a short shelf life, and they will naturally degrade even if they are not used. The following Biodegradable Bag Manufacturer will take everyone to understand the knowledge of degradable plastic bags!
Plastic degradation refers to the end of the life cycle of high molecular polymers, and the molecular weight decreases. The plastic is brittle, cracked, softened, hardened, and loses mechanical strength. The degradation of ordinary plastic bags requires decades or even hundreds of years. Over time, landfilling or incineration of non-degradable plastic bags will pollute the environment. In order to protect the environment, the invention of degradable plastic bags was invented.
Degradable plastic bag refers to the addition of a certain amount of additives (such as starch, modified starch or other cellulose, photosensitizers, biodegradants, etc.) during the production process, which reduces its stability and is more easily degraded in the natural environment. Plastic bag.
What are the types of degradable plastic bags:
1.Photodegradable plastic bag
Photosensitizers are incorporated into plastics to gradually decompose them 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 change, so it cannot control the degradation time.
Under the action of microorganisms, plastics that can be completely decomposed into low molecular compounds. It is characterized by convenient storage and transportation, as long as it is kept dry and does not need to be protected from light, and has a wide range of applications. It can be used not only for agricultural mulch film and packaging bags, but also widely used in the field of medicine. With the development of modern biotechnology, biodegradable plastics have received more and more attention, and have become a new generation of research and development hotspots.
3.Light / biodegradable plastic bag
A type of plastic that combines photodegradation and microorganisms. It has the characteristics of both photodegradation and microorganisms.
4.Water-degradable plastic bag
Adding water-absorbing substance to plastic, it can be dissolved after discarded in water after use. It is mainly used for medical and sanitary equipment (such as medical gloves), which is convenient for destruction and disinfection.
How to identify degradable plastic bags?
1.Signs of degradable garbage
The degradable plastic bag has a unified Chinese environmental mark, which is a green mark consisting of clear mountains, green water, the sun, and ten rings. If it is a plastic bag for food, it must also be printed with the food safety permission qs mark and marked "for food".
The shelf life of degradable plastic bags is only about three months. Even if they are not used, natural degradation will occur in five months. In the sixth month, plastic bags will be covered with "snowflake" and cannot be used. Under composting conditions, even freshly produced degradable plastic bags can be completely degraded in just three months.
The above are the types of degradable plastic bags introduced by Garbage Bag supplier.