2.2 Starch-based fast food box is made of starch, as the name implies, starch plants as raw materials, dietary fiber and other edible additives, which are stirred and kneaded. It is refined by bio-compounding, polysaccharide cross-linking and calcium ion chelation, and consists of four parts: dense layer, inner waterproof layer, rubber mesh layer and outer waterproof layer.
2.3 Pulp molding is made of wood pulp or millet fiber pulp such as reed, bagasse, wheat straw, straw, etc. Refining by pulping, adding a proper amount of non-toxic chemical additives, shaping, drying, shaping, shaping, trimming and disinfection. The aesthetics of the product is not high, and it will also increase the pollution of wastewater.
2.4 Plant fiber types In terms of environmental advantages, plant fiber lunch boxes have obvious advantages. It is made of plant fibers extracted from rice straw, rice husk and bagasse. As raw materials, additives such as molding agent, adhesive and water repellent are added. , stirred and shaped by a molding machine, then dried, shaped and disinfected. These agricultural leftovers can become industrial raw materials, which is beneficial to the comprehensive utilization of agricultural resources.
2.5 degradable plastic lunch box The raw material of this lunch box is degradable plastic. The so-called degradable plastic is to add a certain amount of additives, such as photosensitizer and starch, in the production process of plastic, so that the degradable plastic products can be decomposed into pieces from the complete shape after being used up and abandoned in nature for three months, which at least improves the environment visually. However, the biggest disadvantage of this technology is that these fragments can't continue to degrade, just change from large pieces to small pieces of plastic, and can't fundamentally eliminate white pollution.