2017年8月8日星期二

Disposable lunch boxes are popular among people which may cause pollution

Disposable lunch boxes are popular among people because of the convenience, and people can see the boxes anywhere. Currently, most of the disposable lunch boxes at the market are made of polystyrene which are refined from petroleum and polystyrene foaming agent, then heating and foaming. Polystyrene is a kind of widely used polymer materials, with the lower toxicity, higher melting point, easy plasticity and simple production, so it becomes the first choice of materials for disposable lunch boxes.

Disposable lunch boxes from the original foaming type to the present biodegradable type, its application continuously increased. Office workers and students are the major people to use disposable lunch boxes. From the aspect of health or environment, most people know that disposable lunch boxes have a lot of controversies. However, it is still being used due to its convenience. Experts remind people that the disposable lunch boxes in the supermarkets are not all in line with national standards, long-term use of substandard lunch boxes does harm for the body. It is better to prepare one’s own lunch box.

Disposable plastic foam lunch boxes, also known as disposable polystyrene foam lunch boxes. Wherein the disadvantages of the raw materials on the human body can not be underestimated. If polystyrene is heated, it will release harmful substances, people can eat them with the food, and it harms people’s central nervous system, kidneys and liver, and even cause cancer, so the long-term use can increase the risk of illness. So, plastic recycling through Styrofoam hot melting machine is a good way to deal with it.

Most people would think white lunch box is clean and sanitary, but degradable lunch box is not the same. The general selection of the material for the biodegradable lunch boxes are paper and plants, and neither the color of the paper nor the plant is white, even the paper we used everyday has also been bleached. Lunch boxes made of starch are gray, other types of lunch boxes are also slightly darker instead of pure white. Lunch boxes may also be added a number of qualified additive in order to make the production look better. Some substandard disposable lunch box itself has a certain pungent odor, which is due to the process of adding a number of harmful chemicals or industrial additives in the boxes. Texture qualified box itself should have a certain toughness, not very crisp and can’t be broke with a poke, it should have high intensity.

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