Rewrite: There are two types of materials used in biodegradable lunch boxes: one is made of natural materials, such as paper products, rods, starch, etc., which are degradable, also known as environmentally friendly products; It is made by adding starch, photosensitizer, and other substances.
1. Degradable natural material lunch box
Disposable degradable lunch boxes made of natural materials are also called biodegradable lunch boxes. The biodegradable lunch box is a relatively advanced environmental protection product. It uses starch as the main raw material, adds annual plant fiber powder and special additives, and is processed by chemical and physical methods to make a fully biodegradable fast food box.
Since starch is a biodegradable natural polymer, it is decomposed into glucose under the action of microorganisms and finally decomposed into water and carbon dioxide.
In addition, the material blended with it is also a fully degradable material, so it can be said that it has no impact on the environment. The main source of raw material starch can be corn, potatoes, sweet potatoes, cassava, and other annual growth plants. nature, creature
Fully degradable lunch boxes are not perfect. For example, most of the raw materials for production are food crops, and problems such as mildew resistance have yet to be resolved.
2. Degradable plastic lunch box
The raw materials for the manufacture of such disposable lunch boxes are degradable plastics. The so-called degradable plastics are a certain amount of additives added in the production process of plastics, such as photosensitizers, starch, and other raw materials.
In this way, the degradable lunch box can be decomposed into fragments from a complete shape after being discarded and exposed to nature for three months after use, thus improving the environment at least visually.
However, the defect of this technology is that these fragments cannot continue to degrade, but only change from large pieces to small pieces of plastic, which cannot be fundamentally qualified for the task of eliminating white pollution.
