Pollution theory: foam tableware is difficult to degrade and can cause "white pollution" and freon do harm to the ozone layer.
In theory, a disposable foam plastic lunch box buried in a hundred years to be degraded will cause soil and groundwater pollution. And it can not be used in food-grade materials again after recycling, it just can be made into high-quality industrial raw materials. But because of the food box will be attached to the edible oil, and oil is not easy to clean, it is difficult to clean. This technical problem is not a breakthrough, lunch boxes can not be processed after recycling. Therefore, according to the current technology point of view, Styrofoam recycling is difficult.
The cooking agent of the lunch box is freon, and the pollution to the environment still exists. At present, although the use of butane as a blowing agent, compared with Freon, it is expensive, there may be illegal factories to use cheaper but harmful environment of the blowing agent.
Foam tableware first appeared on the train, due to the waste of plastic waste caused serious damage to the railway landscape, the Ministry of Railways announced the ban on the use of the railway station toilet tableware, and replaced by degradable tableware.
Recycling theory: new technology can re-use foam tableware
Experts believe that the early PS foam tableware to Freon to make foaming agent, the ozone layer is harmful, but the current freon is butane alternative, will not cause damage to the atmosphere. To reduce the Styrofoam boxed to bring "white pollution", recycling is the key point.
Plastic foam boxes recycling such as Styrofoam recycling is very necessary to protect our environment. And then we can reuse it to do some other products.