Chapter 1.The lead.1.1 history research.Plastic water bottles as opaque plastic made from poly ethyl ethylene (Polyethylene: PE) which is a thermoplastic plastic (Thermoplastic). The opaque and heat resistant sufficiently. Most are currently drinking water. But, at present, plastic water bottles as seen in the market murky but to put water and also saw some operators put fresh juice. Such as orange juice, guava juice, or sometimes seen wearing a lemonade. Which of these fruits acidity range in pH 4-6 may shine to the contamination of heavy metal elements of plastic bottles out due to the acidity of the juice container that affect the structure or molecular structure of plastic elements shine or molecules of elements. Plastic pattern is to challenge caused by loose contamination in the food or drink bottle พลาสติกเมื่อ consumers to eat or drink to get these contaminants and ท้าให้เกิด bodily harm. Monitoring centre and proven unsafe product Office of consumer protection. It has conducted tests to prove and build consumer confidence in the consumption of beverage bottle plastic murky. The use of plastics bottle drinking water, small is 2 main types, opaque bottle made of plastic type poly ethyl ethylene (Polyethylene) or PE. And a bottle of clear plastic made from poly ethyl ethylene. Terephthalate (Poly Ethylene Terephthalate) or bottle PET this present used rather than the bottle white cloudy. For bottle packing liquid fill. The packing and will be a bottle capacity is about 20 liters. Opaque bottle made from plastic (poly polypropylene. PP PROM) and clear bottle, light blue or light green do จากพลาสติก type PC (polycarbonate) or plastic type. PET so these bottles must be cleaned before use. The bottle containing water and should be kept in the light of less. To prevent the growth of moss, Nowadays plastics played an important role to the daily life of our human lot toys, electrical appliances, jewelry.
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