1. When the number in the triangular shape at the bottom of the plastic barrel is "1": The main component of this type of plastic barrel is polyethylene terephthalate (polyester), which is also commonly referred to as PET. This type of plastic barrel has a high melting point, but its heat resistance can only reach 70°C and is easily deformed. When the temperature of such plastic barrels exceeds a high temperature, it increases the possibility of dissolution of harmful substances in the plastic barrels, and it is easy to distort and shrink, and it is not allowed to place wine, oil and other substances. Due to the tradition of frugality in China, people often reuse plastic buckets. As everyone knows, the repeated use of such plastic barrels may release the carcinogen DEHP. If the liquid in such plastic barrels is consumed by people, it will be likely to cause cancer and also be toxic to the male testicles. The harm should not be underestimated.
2. When the number in the triangular shape at the bottom of the plastic barrel is "2": the main component of this type of plastic barrel is high-density polyethylene, referred to as HDPE. This kind of plastic barrel has a higher melting point than PET plastic barrel, but the heat resistance can not reach 100 ℃. HDPE itself is non-toxic. However, some processing or modification aids such as fillers, stabilizing aids or pigments are used in the production of these plastic drums. These materials contain harmful substances. Therefore, these plastic drums cannot be used as storage containers or It is other items.
3. When the number in the triangle at the bottom of the plastic barrel is "3": The main component of this type of plastic barrel is polyvinyl chloride, also known as PVC. Such plastic barrels can only heat 81 ℃, and a large amount of plasticizers (plasticizers, such as DOP) and heat stabilizers containing heavy metals are used in the production process, and it is difficult to prevent the presence of free monomers during the synthesis process. Both are considered toxic.
Therefore, such plastic buckets cannot store items that people can eat directly, nor can they be recycled. Because the PVC used in this type of plastic bucket is a high temperature resistant plastic, it cannot be used in places with higher temperatures.
4. When the number in the triangle at the bottom of the plastic barrel is "4": The main component of this type of plastic barrel is low density polyethylene, also known as LDPE. Such plastic barrels are not heat-resistant, and there will be hot melting in high temperature, which will produce some plastic preparations that the human body cannot decompose, which may cause breast cancer and newborns.https://www.fhpails.com/