Can biodegradable bags be used to make garbage bags?

Can biodegradable bags be used to make garbage bags?

With the advancement of garbage classification policies and the improvement of environmental awareness, garbage bags, as daily high-frequency consumables, have attracted much attention for their environmental protection properties. Due to its unique material characteristics and environmentally friendly advantages, biodegradable bags can be fully used to make garbage bags, and are gradually becoming an ideal substitute for traditional plastic garbage bags, providing an effective solution to the secondary pollution problem of "garbage bags". solution.

From the perspective of usage scenarios, the performance of biodegradable bags fully meets the functional requirements of garbage bags. Daily garbage bags need to have certain load-bearing properties, toughness and anti-leakage properties. While mainstream biodegradable bags use a blend of polylactic acid (PLA) and polybutylene adipate (PBAT) as raw materials. By optimizing the formula, tensile strength is 15-25MPa and elongation at break is 200%-400%. It can easily carry 5-10kg of domestic garbage. It is not easy to damage and leak when it comes into contact with kitchen waste and soup, and its performance is comparable to traditional polyethylene (PE) garbage bags. At the same time, biodegradable bags can be made into various styles such as flat mouth and vest type according to demand. They can be adapted to different containers such as household garbage cans and classified garbage cans, and there is no difference in convenience of use.

From the perspective of environmental protection value, the advantages of biodegradable bags in making garbage bags are particularly prominent. Traditional PE garbage bags have a degradation cycle of as long as 200-500 years in the natural environment. After being discarded in large quantities, they are easy to cause "white pollution". Even if they enter landfills, they will form leachate due to difficult degradation, polluting soil and groundwater. Under certain conditions (such as a compost environment, temperature of 50-60℃ and humidity of 60%-70%), biodegradable garbage bags can be decomposed into carbon dioxide, water and biomass by microorganisms within 6-12 months without residual pollutants. Especially for kitchen waste, biodegradable garbage bags can be put into composting together with garbage without manual sorting, which not only reduces the cost of garbage classification, but also realizes the recycling of "waste-compost-resources", which is in line with the construction of "waste-free cities". demand.

However, the use of biodegradable garbage bags requires attention to the appropriate scenarios. At present, biodegradable bags are mainly divided into industrial composting types and household composting types. Industrial composting types need to rely on the high temperature and high humidity environment of professional composting plants to degrade efficiently. If they are randomly discarded in the natural environment, the degradation rate will be slowed down; household composting type Although it can be degraded in household composting boxes, it needs to be combined with microorganisms in kitchen waste. Therefore, when using it, it is necessary to select the corresponding type according to the local garbage disposal method. For example, in areas where kitchen waste composting facilities have been built, industrial composted biodegradable garbage bags can be preferred; if families have composting habits, they can choose household composted products.

From the perspective of comprehensive performance adaptability, environmental protection value and use scenarios, biodegradable bags can not only meet the basic functional needs of garbage bags, but also reduce plastic pollution from the source, which is in line with the trend of green consumption. With the decline in the production cost of biodegradable materials (the current price has dropped to 1.2-1.5 times that of traditional PE materials) and policy support (many places have introduced policies to promote biodegradable plastic products), biodegradable garbage bags will gradually become popular and become an important carrier of practicing environmental protection concepts in daily life.