Two kinds of films are usually used for FSK(foil scrim kraft), one is pure aluminum foil and the other is Metalized film. They seems same, but they are totally two different materials. For the insulation facing, the thickness of aluminum foil are usually 7 microns,12mic,18mic.The thickness of VMPET fim are always 7mic,12mic,15mic.
The aluminum foil means it’s pure aluminum. VMPET film is a vacuum aluminizing process that evaporates high-purity aluminum wire at high temperature (1100~1200℃) into gaseous state. After the plastic film passes through the vacuum evaporation chamber, the gaseous aluminum molecules are deposited on the surface of the plastic film to form a bright light. Metallic color film.
What's the difference between foil and metalized?
Exterior
VMPET film looks more brighter than aluminum foil
Pure aluminum looks more matte
Feel Difference
Aluminum foil:It feels thick and firm and heavier
VMPET:It feels lighter and softer than aluminum foil packaging
Results after Crumpling
After folding, the aluminum foil will be easier to be dead fold
But the VMPET will not, it will rebound soon
Cost
The cost of aluminum foil is much higher
And the VMPET is low
