Plastic bottles are mainly used for carbonated drinks, tea drinks and mineral waters. They are made of polyester and cannot be recycled or filled with hot water.
Plastic bags are best only used in plastic bags that are often used in everyday life. The materials are mainly polyethylene and polyvinyl chloride. Plastic bags made of polyethylene and polyvinyl chloride are non-toxic at room temperature, but this does not mean that both can be used to hold hot food. When using polyvinyl chloride as a plastic bag, a plasticizer (that is, a plasticizer) must be added. This kind of thing is toxic, usually oily, and it is easy to seep out under high temperature environment. If it sticks to food, it may cause diseases such as breast cancer after entering the human body.
The method of identifying which plastic bag is made of is very simple: First, in terms of appearance and touch, the plastic bag made of polyethylene is milky white, translucent or colorless, transparent, and tough, made of polyvinyl chloride. The finished plastic bag is turbid or yellow in color. Second, it can be burned by fire. The polyethylene plastic bag is flammable. When burning, the flame is blue and yellow, and it drops like a candle. The PVC plastic bag is not flammable. It is extinguished when it leaves the fire. The main body of the flame is yellow when burning.
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