Reporter interviewed Zhejiang University of Technology Professor Feng Jie (Zhejiang Plastics Engineering Society and Deputy Secretary-General), he said: "polystyrene is the main material of foam plastic, we use the foam fast food box, aviation cups, foam boxes, etc, which are all made of polystyrene, and its heat resistance temperature is about 90 degrees, said the Internet covered with a lid to drink hot drinks will precipitate harmful substances, I think it is a bit exaggerated.
Beverages in the production process, the need to add a variety of ingredients, coupled with stirring, cover the lid before the temperature does not exceed 90 ℃.
Polystyrene on the 6th and No. 5 Polypropylene itself is a very stable monomer." Feng Jie explained that in the production of other plastic products, may add some small plastic materials such as plasticizers, small molecules of heat is very Easy to be precipitated. "And No. 6 polystyrene and No. 5 polypropylene flow is very good, in the production of plastic additives do not need to add filler, etc.
If you need to make a different color, you need to add a variety of pigments. Pigments in the oily substance is easier to precipitate out, and the general drinks are water-based, is not in the drink of precipitation. And it can also be recycled through foam compactor.
"Let's talk about hot drinks, we drink hot drinks, the general entrance is the highest is seven or eight degrees, and the time is very short. In our industry, polypropylene and polystyrene are one of the simplest, most stable and safest materials, and if these two materials are unsafe, the other plastic products are even more unreliable.
Although the large usage of polystyrene, the polystyrene are disposable, which can easily become the white pollution, so foam cups recycling is very necessary to protect our environment. And then we can reuse it to do some other products.
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