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What's The Biodegradable Bags?

- Jun 09, 2017 -

Biodegradable bags are bags that are capable of being decomposed by bacteria or other living organisms.Every year approximately 500 billion to 1 trillion plastic bags are used worldwide.

Our Bio-degradable Plastic Bags Principle

                                                                

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Distinguishing "biodegradable" from "compostable"

In typical parlance, the word biodegradable is distinct in meaning from compostable. While biodegradable simply means an object is capable of being decomposed by bacteria or other living organisms, "compostable" in the plastic industry is defined as able to decompose in aerobic environments that are maintained under specific controlled temperature and humidity conditions. Compostable means capable of undergoing biological decomposition in a compost site such that the material is not visually distinguishable and breaks down into carbon dioxide, water, inorganic compounds and biomass at a rate consistent with known compostable materials. 

The inclusion of "inorganic materials" precludes the end product from being considered as compost, or humus, which is purely organic material. Indeed, under the ASTM definition, the only criterion needed for a plastic to be called compostable is that it has to appear to go away at the same rate as something else that one already knows is compostable under the traditional definition.

Plastic bags can be made "oxo-biodegradable" by being manufactured from a normal plastic polymer (i.e. polyethylene) or polypropylene incorporating an additive which causes degradation and then biodegradation of the polymer (polyethylene) due to oxidation.

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Material

Most bags that are manufactured from plastic made from corn-based materials, like Polylactic acid (PLA)-blends. Biodegradable plastic bags are nowadays as strong and relieable as traditional (mostly PE)-bags. Many bags are also made from paper, organic materials, or polycaprolactone.

"The public looks at biodegradable as something magical," even though the term is broadly used, according to Ramani Narayan, a chemical engineer at Michigan State University in East Lansing, and science consultant to the Biodegradable Plastics Institute. "This is the most used and abused and misused word in our dictionary right now. Simply calling something biodegradable and not defining in what environment it is going to be biodegradable and in what time period it is going to degrade is very misleading and deceptive." In the Great Pacific garbage patch, biodegradable plastics break up into small pieces that can more easily enter the food chain by being consumed." 



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