The difference between recycled plastic bags and degradable plastic bags

Plastic bags can be said to be a common item in our daily life, almost everywhere you can see their figure, they do provide a lot of convenience to our lives. But at the same time, because of their difficult to degrade characteristics, once they are discarded at will, it will also cause some pollution to the environment. In order to solve this problem, there are recycled plastic bags and degradable plastic bags. So, what's the difference between the two?

The first is recycled plastic bags, which refers to the processing of waste plastics through a series of physical or chemical methods such as pre-treatment, melting granulation, etc., to get new plastic raw materials, and then make these plastic raw materials into new plastic products. The biggest feature of recycled plastic bags is that they are cheap, which can save a lot of costs compared to the production of degradable plastic bags. And it can also selectively process a certain attribute of plastic according to different needs to make corresponding products. However, with the increase of the number of regeneration, the quality of recycled plastic bags will become worse and worse, although the new and old materials can be used to mix the way to slow down the process, but the performance of the finished product will eventually slowly decline to the extent of unusable. In addition, due to the use of waste plastic remanufacturing, it may be difficult to be guaranteed at the health level, especially if it is recycled several times. Therefore, recycled plastic bags are more suitable for areas with fewer cycles and low hygiene requirements.

Degradable plastic bags, as the name suggests, is a plastic bag that can be degradable in a specific environment or natural environment. This plastic bag in the above environment can be degraded into environmentally harmless water, carbon dioxide, methane, mineralized inorganic salts and other substances. As a new type of polymer material, relevant researchers have also been exploring new technologies. The raw materials of degradable plastic bags have both petrochemical raw materials and biomass raw materials, and its decomposition method also has light degradation, oxidative degradation, biodegradation and so on. In terms of performance and practicality, degradable plastic bags are basically not inferior to traditional plastic bags, and even better than traditional plastic bags in specific circumstances. In addition, some substances generated or remaining in the degradation process of degradable plastic bags are harmless to the environment. However, because the development time of this technology is not too long, the cost of the current production process is much higher than that of the traditional plastic bag production method.

All in all, these two kinds of plastic bags have their own advantages, and they can reduce the pollution of waste plastic bags to the environment to a certain extent, which is worth promoting.