Biodegradable bag supplier to share with you: Generally speaking, the biggest advantage of bioplastics is less pollution to the ecosystem and less energy carbon emissions. The current problems caused by landfills can be solved by increasing the use of bioplastics. However, not all bioplastics can be degraded in a short time. For example, some bio-based plastics will remain for decades if not handled properly.
Bioplastics are also popular because they do not contain bisphenol A (BPA). You may have noticed that there are many products labeled as BPA-free on the market, especially in the food storage and infant feeding industry. For example, the European Union has banned the use of BPA in baby bottles. At present, with regard to the use of bisphenol A, most people's concern is that BPA will destroy human hormone secretion and related activities. Bioplastics provide an alternative approach to this problem.
Some bioplastics produce lower greenhouse gases than petroleum-based plastics. For example, polylactic acid (PLA) is a bioplastic that can be produced from existing manufacturing equipment, making it more economical to manufacture.
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What are the disadvantages of bioplastics?
It is difficult for consumers to figure out which plastic products are biodegradable, compostable or recyclable. For this reason, many bioplastics are not properly disposed of ... Most cities do not have factories for sorting and recycling plastic products, so everything ends up in landfills.
For example, cups made of bioplastic PLA look just like ordinary plastic, so consumers throw them into recycling bins. In recycling plants, PLA cups are not sorted and screened because of the additional cost, and they are often processed with PET products. However, PET plastic mixed with PLA cannot be recycled, and eventually both enter the landfill. End the life of both plastics.
Improper disposal of bioplastics can also affect degradation and pollute the environment. For example, packing a biodegradable fork into a sealed landfill may not degrade at all. Conversely, when moisture is present in the environment, anaerobic degradation (decomposition in the absence of oxygen) can also occur, resulting in methane and air pollution problems.
There is an interesting disadvantage to using bioplastics for food storage. A chocolate master uses bio-plastic bags to store her chocolate bars. Unfortunately, insects in the yard were attracted to the bag and consumed it. Therefore, bioplastics are not suitable for food storage in certain specific environments.
Polylactic acid (PLA): the most common bioplastic
Polylactic acid is biodegradable and has properties similar to polypropylene (PP), polyethylene (PE) or polystyrene (PS). It can be produced from existing equipment (equipment for petrochemical plastic production). This makes its production costs relatively economical. Therefore, PLA is the most common and one of the most productive bioplastics.
PLA has a wide range of applications, including plastic films, bottles, and biodegradable medical products (for example, screws, pins, rods and plates that are expected to biodegrade within 6 to 12 months).
PLA shrinks when heated, making it suitable for use as a shrink packaging material. In addition, PLA's melting characteristics are also suitable for 3D printing. On the other hand, PLA's low glass transition temperature makes its containers unsuitable for holding hot liquids.
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