thermoplastic,polyethylene,acrilic
gas, diesel, tires, plastics, petroleum jelly
If this question means which plastics are produced the most annually, I think that would be: 1. polyethylene 2. polypropylene 3. polyethyleneterephtalate. (PET, as in plastic bottles) 4. polystyrene 5. polyester However, as plastic is a collective term for many different materials, there are also many different ways to classify plastics.
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Yes. There are many different safety concerns with plastics, but it is generally safe to use plastics marked #5 (polypropylene in the microwave). There are two concerns with plastics and heating or microwaving. One is that the plastic itself will become unstable. Polypropylene is considered quite stable under heating. More troubling is that there will be plasticizers, such as bisphenol-a, used in the manufacture of the product. These can definitely be dangerous. However, the US Dept of Health and Human Services states clearly that all plastics marked number 5 are "very unlikely" to contain any of these dangerous plasticizers. Those that do will be containers that are not used to contain food. A research group at McPherson college used mass spectrometry across a wide variety of polypropylene containers and found that there is no danger posed by microwaving polypropylene that contains food. If you want to lower your risk as far as possible, always microwave food in glass or plastics with an explicit "microwave safe" label. However, the evidence is overwhelming that polypropylene food containers poses no health risk in the microwave.
Feb 5, 2008
The safest plastics for everyday use are typically labeled with recycling codes 2, 4, and 5, which correspond to HDPE, LDPE, and PP plastics. These plastics are considered safe for food and beverage storage as they are less likely to leach harmful chemicals.
can you give you 5 example of advantages and disadvantages of using plastics
Yes, most plastics labeled with a "5" are considered microwave safe.
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The name of the soundtrack used for channel 5 Star weeknight advertising is not listed.