Take you into the polystyrene foam lunch box

1. Styrofoam lunch box is safe

The raw material for producing polystyrene foam is polystyrene resin, and the polystyrene resin is obtained by free radical polymerization of styrene monomer. The polystyrene resin is added with a nucleating agent, a blowing agent, butane, etc. under the action of high temperature and high pressure, and is formed into a polystyrene lunch box through extrusion, foaming and the like. It does not contain harmful components such as bisphenol A. Some people say that polystyrene contains benzene, so it is harmful, which is a misunderstanding. Polystyrene polymers are safe, stable, and non-toxic. Polystyrene is a polymer of styrene. Although unpolymerized styrene monomer is toxic, polystyrene is hygienic and safe once polymerized into a polymer. China has very strict regulations on the content of unpolymerized styrene monomer in food grade polystyrene resin, generally below 0.5%, so it is safe and reliable.

For example, transparent plastic cups for drinks on airplanes are made of polystyrene plastic and are used by multinational airlines.

2. Any plastic packaging container must be used within the specified conditions

Any good packaging container, if used unreasonably or even destructively, will not be able to protect food or even be harmful. China's current food packaging commonly used plastics are PE, PP, PET, PA, EVA (ethylene-vinyl acetate copolymer), PS, EVOH (ethylene-vinyl alcohol copolymer). Different plastics have different molecular structures, physical and chemical properties, temperature resistance conditions, and barrier properties. Different plastics have different protective functions for foods, so it is necessary to choose different kinds of plastics or pack them with multi-layer plastic composite materials according to the different requirements of the internal foods. For example, a polystyrene foam lunch box can be used at temperatures below 60-70 degrees Celsius and is not resistant to microwave heating. Some people put the PS lunch box with cooking oil and heated it in the microwave oven. As a result, the lunch box turned black and the oil leaked. It was said that the PS lunch box was an unqualified product, which was unfair to the PS. This is not because the PS lunch box is unqualified, but artificially unreasonable use and destructive use. For example, asbestos can suppress small-scale flames in the laboratory, and if you use cotton, you are on fire. You can't say that cotton is a substandard product, but it is artificially misused. Similarly, PP lunch boxes have better high temperature resistance and can be heated by microwaves, but PP has poor low temperature resistance and is brittle when frozen at low temperatures. When you put the PP lunch box in an environment of -20 degrees Celsius, it will be brittle. Can this indicate that PP is not safe? This is a destructive use of PP. Therefore, any safe plastic must be used safely.

3. Unauthorized and illegally added unacceptable lunch boxes cannot be associated with polystyrene safety.