@trigger:
Hi Dave!
The difference between PE (PolyEthylene) and FPE (Foamed PolyEthylene) is same as the difference between egg's white before and after whipping.
Chemically FPE is PE, and chemical test should show them both to be "polyethylene".
The difference is only physical, with lot of microscopic gas bubbles trapped inside FPE, like air bubbles are trapped inside egg's white when it is whipped. However the bubbles in eggs white are big and can be seen by naked eye, while FPE buubles are so tiny, it requires a microscope (electron microscope? ) to see them.
Hi Dave!
The difference between PE (PolyEthylene) and FPE (Foamed PolyEthylene) is same as the difference between egg's white before and after whipping.
Chemically FPE is PE, and chemical test should show them both to be "polyethylene".
The difference is only physical, with lot of microscopic gas bubbles trapped inside FPE, like air bubbles are trapped inside egg's white when it is whipped. However the bubbles in eggs white are big and can be seen by naked eye, while FPE buubles are so tiny, it requires a microscope (electron microscope? ) to see them.
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