Disposable fast food boxes have changed from foam lunch boxes to environment-friendly lunch boxes. The original foam lunch boxes have been eliminated due to their high temperature resistance and environmental damage caused by the manufacturing process. Plastic lunch boxes, paper lunch boxes, wooden lunch boxes, degradable lunch boxes, etc. are available. Among them, plastic has the characteristics of low toxicity, high melting point, strong plasticity, simple production and low relative cost, so it has become the mainstream material for manufacturing disposable fast food boxes.
PP polypropylene, with mechanical and thermal properties, is suitable for food packaging. The lunch boxes are divided into environmental protection lunch boxes, mainly including plastic, paper, starch and rare metals.
