Biodegradable lunch box refers to the natural environment of microorganisms (bacteria, mold, algae) under the action of enzymes, biochemical reactions, resulting in the appearance of mold to the inner quality changes, and ultimately the formation of carbon dioxide and water lunch box. The whole degradation process can be decomposed into harmless substances without artificial participation, which is a very long process. Degradable lunch box finished waste in addition to degradation performance should be in line with GB18006.3-2020 "one-time degradable food and drink utensils General Technical Requirements", it should also have a recycling value, easy to regenerate, or to facilitate the sanitary landfill and high-temperature composting process.
Two, biodegradable disposable lunch box is what material
Biodegradable lunch box using materials are divided into two kinds: one is made of natural materials, such as paper products, straw, starch, etc., can be degraded, also known as environmentally friendly products; the other is made of plastics as the main ingredient, adding starch, photosensitizers and other substances.
1, biodegradable natural materials lunch box
The disposable biodegradable lunch box made of natural materials is also known as biodegradable lunch box. Biodegradable lunch box is a more advanced environmental protection products. It takes starch as the main raw material, adds one year old plant fiber powder and special additives, and is processed by chemical and physical methods to make biodegradable lunch box. As starch is a biodegradable natural macromolecule, it is decomposed into glucose under the action of microorganisms and finally into water and carbon dioxide. In addition, the materials mixed with it*** are also fully degradable, so it can be said that it has no impact on the environment. The main source of starch, the raw material for production, can be corn, potato, sweet potato, cassava and other annual long-term plants. Naturally, the biodegradable lunch box is not perfect, for example, most of the production raw materials are food crops, and there are mold and mildew resistance and other problems yet to be solved.
2, biodegradable plastic lunch boxes
The raw material for such disposable lunch boxes is biodegradable plastic, the so-called biodegradable plastic is to add a certain amount of additives to the plastic production process, such as photosensitizers, starch and other raw materials. In this way, biodegradable plastic products can be decomposed into fragments from a complete shape after being used up and discarded in nature after three months of exposure, thus improving the environment, at least visually. But the biggest flaw in this technology is that these fragments can not continue to degrade, but only from a large piece into a small piece of plastic, can not be fundamentally competent to eliminate the task of white pollution.