What materials are cornstarch based shopping bags made of, and what are their advantages over traditional plastic bags?

Cornstarch based shopping bags are made of a mixture of two main materials: cornstarch and PE (polyethylene). This mixture of materials makes the shopping bags both strong and durable, and also degradable and environmentally friendly.

Compared with traditional plastic shopping bags, cornstarch based shopping bags have the following advantages:
Environmental protection:
Cornstarch based shopping bags can be naturally degraded under appropriate conditions and will not cause long-term pollution to the environment. In contrast, traditional plastic shopping bags take decades or even hundreds of years to completely degrade, and microplastic pollution may be generated during the degradation process.
Renewability:
Cornstarch is a renewable resource with a wide range of sources and is sustainable. Shopping bags made from cornstarch help reduce dependence on non-renewable resources such as petroleum.
Reduced energy consumption:
The energy consumption required to produce cornstarch based shopping bags is usually lower than that required to produce traditional plastic shopping bags. This helps reduce carbon emissions and energy consumption, and is in line with the environmental protection concept of energy conservation and emission reduction.
Multiple uses:
Cornstarch based shopping bags are not only suitable for shopping, but can also be used as garbage bags, express bags and other purposes. Its diverse types (such as flat bags, vest bags, die-cut bags, roll bags, mailing bags, etc.) also meet the use of different occasions and needs.