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Plastic bottles

328 bytes added, 04:07, 7 October 2009
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  Plastics have become a big part of our lives today. We use plastic in just about everything from computers and entertainment, to containers and cars. We have become very plastic dependent in the last 60 years or so. Plastics are less breakable than glass, last longer, cheaper to make, and so much more. One of the first plastic products that come to mind is the plastic water bottle. Every grocery store and gas station across our nation has on its shelves, multiple water bottle options. They are cold, refreshing,-- and quite snazzy in design. They have great depicitons of waterfalls and untouched landscapes, clever brand names, and the convience of not haveing to do much to obtain. It all sounds great untill you start thinking in a more holistic way. Ever think about where the bottles go when you throw them away or recycle them? How about what goes into making water bottles- the energy and resources?
== How Where does plastic come from? =='''Plastic Bottles Come From Virgin Sources.'''::*PET = Polyethylene Terephtalate: Petroleum & Natural Gas::*Oil Extraction: Middle East, Nigeria - Environmental & Social Issues::*Shipped to Refineries: mix HC’s from crude oil w/ chemical catalysts triggering polymerization - forms plastic pellets1.5 million barrels of oil are used to produce plastic watter bottles made? ==in the US per year. That much energy could power 250,000 homes or fuel 100,000 cars for a year (USA Today)
The technological road from oil field to finished plastic product has numerous fascinating side trips. Here’s the route taken in the petroleum[[Image:Set -|thumb]]'''Plastics are sold on open market as Commodities (subject to-plastics processSupply & Demand''')::  1. Petroleum is drilled Brokers buy virgin plastic pellets and transported sell to a refinery. manufacturers ::2. Crude oil and natural gas are refined into ethane, propane, hundreds of other petrochemical products and, of course, fuel for your carManufacturers (i.  3e. Ethane and propane are "cracked" China) melt pellets into ethylene “pre-forms” (small test tubes) by heating ~270’C and propylenemixing them to form homogenous paste, using highthan reheat ~100’C w/ infrared lamps to regain plasticity. Bottling Companies purchase “Pre-temperature furnaces. forms”  4::3. Catalyst is combined with ethylene or propylene in a reactor, resulting in "fluff," a powdered material Bottling Companies (polymer) resembling laundry detergenti.  5e. Fluff is combined with additives in a continuous blender.  6. Polymer is fed Coca-Cola) stretch and blow mold the “pre-forms” under high pressure to an extruder where it is melted.  7. Melted plastic is cooled then fed to a pelletizer that cuts create the product into small pelletsbottles’ final shape.  8. Pellets Bottles must be sterilized for FDA regulations and than they are shipped filled, capped, labeled, packed into cases, and prepared for shipping to customersconsumer.  9::4. Customers manufacture Producing 1 kilogram of PET plastic products by using processes such as extrusionrequires 17.5 kilograms of water and results in air emissions of 40 grams of hydrocarbons, 25 grams of sulfur oxides, injection molding18 grams of carbon monoxide, blow molding20 grams of nitrogen oxides, etc<references />http://wwwand 2.reachoutmichigan3 kilograms of carbon dioxide.org/funexperiments/quick/plastic::5.html<br> Once the manufacuturer prepares Much more water is consumed in making the bottles and fills than will ever go into them, they are shipped off to convience stores all over the world and sold to the public. (The Green Guide)
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