2A+Crystal+J

=aluminium used to food packaging...= advantages...
 * light weight[[image:hh.png width="405" height="250" align="right"]]
 * easy to recycles
 * strong
 * flexible
 * Provide excellent barrier properties (gases, water vapour, light, and odours).

disadvantages... ( if not lacquered or coated) media type="youtube" key="VC7ABf9puRI" height="315" width="560" align="center"
 * no suitable to use in the microwave oven
 * difficult to weld
 * prone to severe spring back
 * Once in strange cans must be protected from moisture and / or humidity
 * Once in strange cans must be protected from moisture and / or humidity



= = = = =polyethylene terephthalate (PET) plastic...= = media type="youtube" key="2Fn5LF8V1Gk" height="315" width="560" align="center"

=

advantages...
 * easy process ability
 * strength[[image:p.jpg align="right"]]
 * lightweight
 * stability
 * simplifies recycling
 * create any shapes
 * many transfer from the plastic to the food do not pose a rise to human health.

disadvantages...
 * essential odours, flavours, and oxygen
 * lack clarity
 * relatively high rate

=polyethylene terephthalate glass=

media type="youtube" key="xsuvtmmtRLU" height="315" width="420" align="center"



advantages...
 * clear
 * suit for microwave oven
 * strong
 * long period of time
 * glass has high barrier properties, is inert, and is suitable for heat and microwave processing.

disadvantages...
 * easy to break
 * heavy weight[[image:cc.jpg align="right"]]
 * glass is easily broken would be heavy and expensive as food packaging material.
 * disadvantages of glass use as in packaging are its weight and the risk of fracturing.

Reference: http://www.world-aluminium.org/About+Aluminium/Benefits http://www.ucc.ie/fcis/PKtinplateandaluminiumcans.htm http://aluminium.org.au/packaging http://www.livestrong.com/article/259503-the-disadvantages-of-aluminum-cans/ http://www.wildflavors.com/?page_ID=D7E591BC-C908-43FD-DE8A094CE7E401A6 http://www.benefits-of-recycling.com/petrecycling.html http://petresin.org/news_introtoPET.asp http://www.hyfoma.com/en/content/processing-technology/food-packaging-packing/