With the deepening of the green environmental protection concept and the increasing awareness of plastic garbage bag environmental pollution, a biodegradable garbage bag has appeared on the market. Degradable means that it can be absorbed and decomposed by nature in its natural state. So, what material is a biodegradable garbage bag made of? What type of garbage does it belong to? Let's learn about degradable garbage bags.
Meaning of degradable food waste bags
In strict sense, there is no completely environmentally friendly plastic product, but the manufacturers of garbage bags add some ingredients to make them easier to degrade, which is what we call degradable food waste bags. During the production process, manufacturers add a certain amount of additives, such as starch, modified starch, or other cellulose, photosensitizer, and biodegradable agents, to reduce the stability of plastic packaging materials and make them easier to degrade in the natural environment.
Materials of degradable food waste bags
The fundamental characteristic of a degradable food waste bags is that it is "degradable and easily degradable." According to the different raw materials and decomposition factors, it can be roughly divided into the following four types:
Photo-degradable garbage bags
These are made mainly of PE, blended with photo-degradable agents and mineral powders such as calcium carbonate, and can decompose under the influence of sunlight. This is an earlier generation of degradable plastics. Its disadvantage is that the degradation time is difficult to predict because of sunlight and climate changes, and therefore the degradation time cannot be controlled.
Biodegradable garbage bags
These are made mainly of PE, mixed with starch and other biodegradable agents. These bags mainly rely on microbial action to decompose and can be completely decomposed into low-molecular-weight compounds of plastic under the action of microorganisms. Its characteristics are convenient storage and transportation, do not need to be kept in the dark as long as they are kept dry, and have a wide range of applications, not only for agricultural film and packaging bags but also widely used in the medical field.
Photo/Biodegradable garbage bags
These are a type of plastic that combines photo-degradation with microorganisms, and has the characteristics of both photo and biodegradable plastics.
Water-soluble garbage bags
These bags contain water-soluble materials that dissolve in water after use, mainly used in medical and health supplies to facilitate disposal and disinfection.
Biodegradable food waste bags can be marked with a RECYCLE logo or the "EPI" environmental protection logo.
What type of garbage do degradable food waste bags belong to?
Degradable food waste bags are recyclable, but in daily life, they should be thrown into the dry garbage bin. Biodegradable garbage bags are theoretically recyclable, but they are difficult for ordinary consumers to distinguish between biodegradable and non-biodegradable garbage bags. Most cities do not have a dedicated recycling system for this purpose, so they should still be thrown into the dry garbage bin.