塑料瓶底的数字密码（Digital cipher at the bottom of plastic bottle）.doc

塑料瓶底的数字密码（Digital cipher at the bottom of plastic bottle） Water cup, mineral water bucket, plastic tableware, beverage bottle, baby bottle...... These plastic products can be found everywhere in our lives, either heated or reused for a long time. However, these habits imply the deadly murder, and the mystery hidden in the bottom of the plastic bottles in numbers. Digital password plastic bottle: do not understand the hidden dangers in the code In some families and snack stands, the repeated use of plastic bottled water, soy sauce, cooking oil, vinegar and so on are very common. The majority of the family is dominated by the elderly, they think that the plastic bottles are thrown away, but in order to save and reuse, and that the plastic bottle after cleaning is safe, it is not clear the implied toxicity of plastic bottles. In school, many students, the cup body is plastic, at the bottom of the triangle has 7 of the words, and some students drinking water without any logo. In the supermarket, some bottled milk, fruit juice, mineral water and other beverage plastic bottle bottom triangle, the inside number is 1. And the bottom of the barrel of cooking oil triangle, the inside number is 1 or 2, and below the triangle has PET or PETE word. The number of cosmetic plastic bottles at the bottom is 2 and is marked HDPE. The triangle number at the bottom of the plastic wrap of some instant noodles is 5. Plastic traveling glass, bottled mineral water, most of the bottom marked 7. The number 1 stands for PET, that is polyethylene terephthalate Mineral water bottles and carbonated beverage bottles are made of this material. Dong Jinshi pointed out that the beverage bottles can not be recycled, hot water, this material is heat-resistant to 70 degrees, only suitable for warm drinks or frozen drinks, high temperature liquid or heating is easy to deformation, there are harmful substances dissolved. Scientists found that after 10 months, the plastic could release carcinogens and be